COGENT COMMUNICATIONS GROUP INC
EX-10.3
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<TYPE>EX-10.3
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<DESCRIPTION>EX-10.3
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<p align="right" style="margin:0in 0in .0001pt;text-align:right;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Exhibit 10.3</font></b></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">COGENT
COMMUNICATIONS GROUP, INC.</font></b></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">SIXTH AMENDED AND RESTATED<br>
<u>REGISTRATION RIGHTS AGREEMENT</u></font></b></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="layout-grid-mode:char;margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">September 15, 2004</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">To each of the several
holders of Series F Preferred Stock (the &#147;<u>Series F Purchasers</u>&#148;), each
sub-series of Series G Preferred Stock (collectively, the &#147;<u>Series G
Purchasers</u>&#148;), Series I Preferred Stock (the &#147;<u>Series I Purchasers</u>&#148;),
Series J Preferred Stock (the &#147;<u>Series J Purchasers</u>&#148;), Series K Preferred
Stock (the &#147;<u>Series K Purchasers</u>&#148;), and Series L Preferred Stock (the &#147;<u>Series
L Purchasers</u>&#148;) collectively, the Series F, G, I, J, K, and L Purchasers
shall be known as the &#147;<u>Purchasers</u>&#148;):</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Dear Sirs:</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">This will confirm that
the Company covenants and agrees with each of you as follows:</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">1.</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><u>Certain
Definitions</u>.&#160; As used in this
Agreement, the following terms shall have the following respective meanings:</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&#147;<u>Commission</u>&#148;
shall mean the Securities and Exchange Commission, or
any other federal agency at the time administering the Securities Act.</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&#147;<u>Common Stock</u>&#148;
shall mean the Common Stock, par value $.001 per share, of the Company, as
constituted as of the date of this Agreement.</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&#147;<u>Company</u>&#148;
shall mean Cogent Communications Group, Inc.</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&#147;<u>Conversion
Shares</u>&#148; shall mean shares of Common Stock issued or issuable upon
conversion of the Preferred Stock, and any shares of
capital stock received in respect thereof.</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&#147;<u>Exchange Act</u>&#148;
shall mean the Securities Exchange Act of 1934 or any similar federal statute,
and the rules and regulations of the Commission thereunder, all as the same
shall be in effect at the time.</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&#147;<u>Preferred
Stock</u>&#148; shall mean the Series F Preferred Stock, the Series G Preferred
Stock, the Series I Preferred Stock, the Series J Preferred Stock and the
Series K Preferred Stock.</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&#147;<u>Registration
Expenses</u>&#148; shall mean the expenses so described in Section&nbsp;8.</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&#147;<u>Restricted
Stock</u>&#148; shall mean (i) the Conversion Shares, excluding Conversion Shares
which have been (a)&nbsp;registered under the Securities Act pursuant to an</font></p>

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<p align="center" style="layout-grid-mode:char;margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">effective</font>
registration statement filed thereunder and disposed of in accordance with the
registration statement covering them or (b)&nbsp;publicly sold pursuant to
Rule&nbsp;144 under the Securities Act, and (ii) any shares of Common Stock
issued or distributed in respect of the securities described in clause (i).</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&#147;<u>Securities Act</u>&#148;
shall mean the Securities Act of 1933 or any similar federal statute, and the
rules and regulations of the Commission thereunder, all as the same shall be in
effect at the time.</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&#147;<u>Selling
Expenses</u>&#148; shall mean the expenses so described in Section&nbsp;8.</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&#147;<u>Series F
Preferred Stock</u>&#148; shall mean the Series F Participating Convertible
Preferred Stock, par value $.001 per share, of the Company, constituted as of
July 31, 2003.</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&#147;<u>Series G
Preferred Stock</u>&#148; shall mean the Series G Participating Convertible
Preferred Stock of the Company, constituted as of July 31, 2003.</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&#147;<u>Series I
Preferred Stock</u>&#148; shall mean the Series I Participating Convertible
Preferred Stock of the Company, constituted as of January 5, 2004.</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&#147;<u>Series J
Preferred Stock</u>&#148; shall mean the Series J Participating Convertible
Preferred Stock of the Company, constituted as of March 30, 2004.</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&#147;<u>Series K
Preferred Stock</u>&#148; shall mean the Series K Participating Convertible
Preferred Stock of the Company constituted as of August 12, 2004.</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&#147;<u>Series L
Preferred Stock</u>&#148; shall mean the Series L Participating Convertible
Preferred Stock of the Company, issued as of the date of this Agreement.</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">2.</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><u>Restrictive
Legend</u>.&#160; Each certificate
representing Preferred Stock, Conversion Shares or Restricted Stock shall,
except as otherwise provided in this Section&nbsp;2 or
in Section&nbsp;3, be stamped or otherwise imprinted with a legend
substantially in the following form:</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt 1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&#147;The securities represented by this certificate have
not been registered under the Securities Act of 1933 or applicable state
securities laws.&#160; These securities have
been acquired for investment and not with a view to distribution or resale, and
may not be sold mortgaged, pledged, hypothecated or otherwise transferred
without an effective registration statement for such securities under the Securities
Act of 1933 and applicable state securities laws, or the availability of an
exemption from the registration provisions of the Securities Act of 1933 and
applicable state securities laws.&#148;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">A certificate shall not bear such legend if in the
opinion of counsel reasonably satisfactory to the Company the securities being
sold thereby may be publicly sold without registration</font></p>

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<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">under</font> the Securities Act.</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">3.</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><u>Notice
of Proposed Transfer</u>.&#160; Prior to any
proposed transfer of any Preferred Stock, Conversion Shares or Restricted Stock
(other than under the circumstances described in Sections&nbsp;4, 5 or 6), the
holder thereof shall give written notice to the Company of its intention to
effect such transfer.&#160; Each such notice
shall describe the manner of the proposed transfer and, if requested by the
Company, shall be accompanied by an opinion of counsel reasonably satisfactory
to the Company to the effect that the proposed transfer may be effected without
registration under the Securities Act, whereupon the holder of such stock shall
be entitled to transfer such stock in accordance with the terms of its notice; <u>provided</u>,
<u>however</u>, that no such opinion of counsel shall be required for a
transfer to one or more partners of the transferor (in the case of a transferor
that is a partnership), to one or more members of the transferor (in the case
of a transferor that is a limited liability company) or to an affiliated
corporation (in the case of a transferor that is a corporation);&#160; <u>provided</u>, <u>further</u>, <u>however</u>,
that any transferee other than a partner, member or affiliate of the transferor
shall execute and deliver to the Company a representation letter in form
reasonably satisfactory to the Company&#146;s counsel to the effect that the
transferee is acquiring Restricted Stock for its own account, for investment
purposes and without any view to distribution thereof.&#160; Each certificate for Preferred Stock or
Conversion Shares transferred as above provided shall bear the legend set forth
in Section&nbsp;2, except that such certificate shall not bear such legend if
(i)&nbsp;such transfer is in accordance with the provisions of Rule&nbsp;144
(or any other rule permitting public sale without registration under the
Securities Act) or (ii)&nbsp;the opinion of counsel referred to above is to the
further effect that the transferee and any subsequent transferee (other than an
affiliate of the Company) would be entitled to transfer such securities in a
public sale without registration under the Securities Act.&#160; The restrictions provided for in this
Section&nbsp;3 shall not apply to securities which are not required to bear the
legend prescribed by Section&nbsp;2 in accordance with the provisions of that
Section.</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4.</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><u>Required
Registration</u>.</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(a)</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Subject to
Section 13(f) of this Agreement, at any time after the earlier of (i) July 31,
2006 and (ii) the date that is six (6) months after the first public offering
after the date hereof of securities by the Company, holders of Restricted Stock
constituting more than 50% of the total number of shares of Restricted Stock
then outstanding may request the Company to register under the Securities Act
all or any portion of the shares of Restricted Stock held by such requesting
holder or holders for sale in the manner specified in such notice.&#160; For purposes of this Section&nbsp;4 and
Sections&nbsp;5, 6, 13(a) and 13(d), the term &#147;Restricted Stock&#148; shall be
deemed to include the number of shares of Restricted Stock which would be
issuable to a holder of Preferred Stock upon conversion of all shares of
Preferred Stock held by such holder at such time; <u>provided</u>, <u>however</u>,
that the only securities which the Company shall be required to register
pursuant hereto shall be shares of Common Stock; <u>provided</u>, <u>further</u>,
<u>however</u>, that, in any underwritten public offering contemplated by this
Section&nbsp;4 or Sections&nbsp;5 and 6, the holders of Preferred Stock shall
be entitled to sell such Preferred Stock to the underwriters for conversion and
sale of the shares of Common Stock issued upon conversion thereof and holders
of a majority of the Preferred Stock being so registered shall have the right
to approve the managing underwriter(s) selected by the</p>

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<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Company in connection with such underwritten public
offering.</font>&#160;
Notwithstanding anything to the contrary contained herein, the Company
shall not be obligated to effect a registration (i) during the 180&nbsp;day
period commencing with the effective date of a registration statement filed by
the Company covering the first firm commitment underwritten public offering
after the date hereof or (ii) if the Company delivers notice to the holders of
the Restricted Stock within thirty (30) days of any registration request of the
Company&#146;s intent to file a registration statement for an underwritten public
offering within ninety (90) days.</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(b)</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Following
receipt of any notice under this Section&nbsp;4, the Company shall immediately
notify all holders of Restricted Stock and Preferred Stock from whom notice has
not been received and such holders shall then be entitled within 30 days
thereafter to request the Company to include in the requested registration all
or any portion of their shares of Restricted Stock.&#160; The Company shall use its best efforts to
register under the Securities Act, for public sale in accordance with the
method of disposition described in paragraph (a) above, the number of shares of
Restricted Stock specified in such notice (and in all notices received by the
Company from other holders within 30&nbsp;days after the giving of such notice
by the Company).&#160; The Company shall be
obligated to register Restricted Stock pursuant to this Section&nbsp;4 on three
occasions only; <u>provided</u>, <u>however</u>, that such obligation shall be
deemed satisfied only when a registration statement covering all shares of
Restricted Stock specified in notices received as aforesaid for sale in
accordance with the method of disposition specified by the requesting holders
shall have become effective and, if such method of disposition is a firm
commitment underwritten public offering, all such shares shall have been sold
pursuant thereto.</p>

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<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(c)</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>The
Company (or at the option of the Company, the holders of Common Stock) shall be
entitled to include in any registration statement referred to in this
Section&nbsp;4, for sale in accordance with the method of disposition specified
by the requesting holders, shares of Common Stock to be sold by the Company or
such other holders for its own account, except as and to the extent that, in
the opinion of the managing underwriter (if such method of disposition shall be
an underwritten public offering), such inclusion would adversely affect the
marketing of the Restricted Stock to be sold.&#160;
Subject to Section 4(a) and except for registration statements on
Form&nbsp;S-4, S-8 or any successor thereto, the Company will not file with the
Commission any other registration statement with respect to its Common Stock,
whether for its own account or that of other stockholders, from the date of
receipt of a notice from requesting holders pursuant to this Section 4 until
the completion of the period of distribution of the registration contemplated
thereby.</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(d)</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>If, in the
opinion of the managing underwriter, the inclusion of all of the Restricted
Stock requested to be registered under this Section would adversely affect the
marketing of such shares, the Company shall only include the number of shares
that, in the reasonable opinion of such underwriter, can be sold without having
an adverse effect on the marketing of such shares, to be allocated to each
stockholder of the Company on a <i><font style="font-style:italic;">pro rata</font></i> basis
based on the total number of shares held by such holder and requested to be
included in the registration; <u>provided</u>, <u>however</u>, that the number
of shares of Restricted Stock to be included in such underwriting and
registration shall not be reduced unless all other securities of the Company
are first excluded from the underwriting and registration.</p>

<p align="center" style="layout-grid-mode:char;margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

</font></div>

</div>
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<p align="center" style="layout-grid-mode:char;margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">5.</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><u>Incidental
Registration</u>.&#160; Subject to Section
13(f) of this Agreement, if the Company at any time (other than pursuant to
Section&nbsp;4 or Section&nbsp;6) proposes to register any of its securities
under the Securities Act for sale to the public, whether for its own account or
for the account of other security holders or both (except with respect to
registration statements on Forms&nbsp;S-4, S-8 or another form not available
for registering the Restricted Stock for sale to the public), each such time it
will give written notice to all holders of outstanding Restricted Stock of its
intention so to do.&#160; Upon the written
request of any such holder, received by the Company within 30&nbsp;days after
the giving of any such notice by the Company, to register any of its Restricted
Stock, the Company will use its best efforts to cause the Restricted Stock as
to which registration shall have been so requested to be included in the
securities to be covered by the registration statement proposed to be filed by
the Company, all to the extent requisite to permit the sale or other
disposition by the holder (in accordance with its written request) of such
Restricted Stock so registered.&#160; In the
event that any registration pursuant to this Section&nbsp;5 shall be, in whole
or in part, an underwritten public offering of Common Stock, if the managing
underwriter determines in good faith that marketing factors require a
limitation of the number of shares to be underwritten, the number of shares
that may be included in the underwriting shall be allocated, first, to the
Company; second, to the holders of Restricted Stock invoking the rights under
this Section 5 on a <i><font style="font-style:italic;">pro rata</font></i> basis
based on the total number of shares of Restricted Stock held by such holders;
and third, to any stockholder of the Company (other than such holders) on a <i><font style="font-style:italic;">pro rata</font></i> basis.&#160; No
such reduction shall reduce the amount of securities of the selling holders
included in the registration below thirty percent (30%) of the total amount of
securities included in such registration.&#160;
In no event will shares of any other selling stockholder be included in
such registration that would reduce the number of shares which may be included
by holders of Restricted Stock without the written consent of the holders of
not less than sixty-six and two-thirds percent (66 2/3%) of the Restricted
Stock proposed to be sold in the offering.&#160;
If any such holder disapproves of the terms of any such underwriting,
such holder may elect to withdraw therefrom by written notice to the Company
and the underwriter, delivered at least ten (10) business days prior to the
effective date of the registration statement.&#160;
Any shares of Restricted Stock excluded or withdrawn from such
underwriting shall be excluded and withdrawn from the registration.&#160; For any holder which is a partnership or
corporation, the partners, retired partners and stockholders of such holder, or
the estates and family members of any such partners and retired partners and
any trusts for the benefit of any of the foregoing person shall be deemed to be
a single holder, and any <i><font style="font-style:italic;">pro rata</font></i>
reduction with respect to such holder shall be based upon the aggregate amount
of shares carrying registration rights owned by all entities and individuals
included in such holder, as defined in this sentence.&#160; Notwithstanding the foregoing provisions, the
Company may withdraw any registration statement referred to in this
Section&nbsp;5 without thereby incurring any liability to the holders of
Restricted Stock.</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">6.</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><u>Registration
on Form&nbsp;S-3</u>.&#160; Subject to Section
13(f) of this Agreement, if at any time (i)&nbsp;a holder or holders of
Restricted Stock then outstanding request that the Company file a registration
statement on Form&nbsp;S-3 or any successor thereto for a public offering of
all or any portion of the shares of Restricted Stock held by such requesting
holder or holders, and (ii)&nbsp;the Company is a registrant entitled to use
Form&nbsp;S-3 or any successor</p>

<p align="center" style="layout-grid-mode:char;margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

</font></div>

</div>
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<p align="center" style="layout-grid-mode:char;margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">thereto to register such shares, then the Company
shall use its best efforts to register under the Securities Act on Form&nbsp;S-3
or any successor thereto for public sale in accordance with the method of
disposition specified in such notice, the number of shares of Restricted Stock
specified in such notice.&#160; Whenever the
Company is required by this Section&nbsp;6 to use its best efforts to effect
the registration of Restricted Stock, each of the procedures and requirements
of Section&nbsp;4 (including but not limited to the requirement that the
Company notify all holders of Restricted Stock from whom notice has not been
received and provide them with the opportunity to participate in the offering)
shall apply to such registration; <u>provided</u>, <u>however</u>, that there
shall be no limitation on the number of registrations on Form&nbsp;S-3 which
may be requested and obtained under this Section&nbsp;6 and registrations
effected pursuant to this Section 6 shall not be counted as demands for
registration or registrations effected pursuant to Sections 4 or 5,
respectively.</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(b)</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Notwithstanding
anything to the contrary set forth in this Agreement, the Company&#146;s obligation
under this Agreement to register Restricted Stock under the Securities Act on
registration statements (&#147;<u>Registration Statements</u>&#148;) may, upon the
reasonable determination of the Board of Directors made not more than twice in
the aggregate (and not more than once with respect to a Registration Statement
on Form&nbsp;S-1 and not more than once with respect to a Registration
Statement on Form&nbsp;S-3 and including any delay pursuant to the last
sentence of Section 4(a)) during any 12-month period, be suspended in the event
and during such period as unforeseen circumstances (including without
limitation (i)&nbsp;an underwritten primary offering by the Company (which
includes no secondary offering) if the Company is advised in writing by its
underwriters that the registration of the Restricted Stock would have a
material adverse effect on the Company&#146;s offering, or (ii)&nbsp;pending
negotiations relating to, or consummation of, a transaction or the occurrence
of an event which would require additional disclosure of material information
by the Company in Registration Statements or such other filings, as to which
the Company has a bona fide business purpose for preserving confidentiality or
which renders the Company unable to comply with the Commission&#146;s requirements)
exist (such unforeseen circumstances being hereinafter referred to as a &#147;<u>Suspension
Event</u>&#148;) which would make it impractical or unadvisable for the Company to
file the Registration Statements or such other filings or to cause such to
become effective.&#160; Such suspension shall
continue only for so long as such event is continuing but in no event for a
period longer than (i) one hundred and twenty (120) days, in the case of a
Registration Statement on Form S-1 (or any successor thereto) or (ii) ninety
(90) days, in the case of a Registration Statement on Form S-3 (or any
successor thereto).&#160; The Company shall
notify the Purchasers of the existence and nature of any Suspension Event.</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">7.</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><u>Registration
Procedures</u>.&#160; If and whenever the
Company is required by the provisions of Sections&nbsp;4, 5 or 6 to use its
best efforts to effect the registration of any shares
of Restricted Stock under the Securities Act, the Company will, as
expeditiously as possible:</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(a)</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>prepare
and file with the Commission a registration statement (which, in the case of an
underwritten public offering pursuant to Section&nbsp;4, shall be on Form S-1
or other form of general applicability satisfactory to the managing underwriter
selected as therein provided) with respect to such securities and use its best efforts
to cause such</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

</font></div>

</div>
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<p align="center" style="layout-grid-mode:char;margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">registration</font> statement to become
and remain effective for the period of the distribution contemplated thereby
(determined as hereinafter provided);</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(b)</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>prepare
and file with the Commission such amendments and supplements to such registration
statement and the prospectus used in connection therewith as may be necessary
to keep such registration statement effective for the period specified in
paragraph&nbsp;(a) above and comply with the provisions of the Securities Act
with respect to the disposition of all Restricted Stock covered by such
registration statement in accordance with the sellers&#146; intended method of
disposition set forth in such registration statement for such period;</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(c)</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>furnish to
each seller of Restricted Stock and to each underwriter such number of copies
of the registration statement and each such amendment and supplement thereto
(in each case including all exhibits) and the prospectus included therein
(including each preliminary prospectus) as such persons reasonably may request
in order to facilitate the public sale or other disposition of the Restricted
Stock covered by such registration statement;</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(d)</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>use its
best efforts to register or qualify the Restricted Stock covered by such
registration statement under the securities or &#147;blue sky&#148; laws of such
jurisdictions as the sellers of Restricted Stock or, in the case of an
underwritten public offering, the managing underwriter reasonably shall
request; <u>provided</u>, <u>however</u>, that the Company shall not for any
such purpose be required to qualify generally to transact business as a foreign
corporation in any jurisdiction where it is not so qualified or to consent to
general service of process in any such jurisdiction;</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(e)</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>use its best efforts to list the Restricted Stock covered by
such registration statement with any securities exchange on which the Common
Stock of the Company is then listed;</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(f)</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>immediately
notify each seller of Restricted Stock and each underwriter under such
registration statement, at any time when a prospectus relating thereto is
required to be delivered under the Securities Act, of the happening of any
event of which the Company has knowledge as a result of which the prospectus
contained in such registration statement, as then in effect, includes an untrue
statement of a material fact or omits to state a material fact required to be
stated therein or necessary to make the statements therein not misleading in
light of the circumstances then existing, and promptly prepare and furnish to
such seller a reasonable number of copies of a prospectus supplemented or
amended so that, as thereafter delivered to the purchasers of such Restricted
Stock, such prospectus shall not include an untrue statement of a material fact
or omit to state a material fact required to be stated therein or necessary to
make the statements therein not misleading in light of the circumstances then
existing;</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(g)</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>if the offering is underwritten and at the request of any
seller of Restricted Stock, use its best efforts to furnish on the date that Restricted
Stock is delivered to the underwriters for sale pursuant to such
registration:&#160; (i)&nbsp;an opinion dated
such date of</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

</font></div>

</div>
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<p align="center" style="layout-grid-mode:char;margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">counsel representing the Company for the purposes of
such registration, addressed to the underwriters and to such seller, to such
effect as reasonably may be requested by counsel for the underwriters, and
(ii)&nbsp;a letter dated such date from the independent public accountants
retained by the Company, addressed to the underwriters and to such seller,
stating that they are independent public accountants within the meaning of the
Securities Act and that, in the opinion of such accountants, the financial
statements of the Company included in the registration statement or the
prospectus, or any amendment or supplement thereof, comply as to form in all
material respects with the applicable accounting requirements of the Securities
Act, and such letter shall additionally cover such other financial matters
(including information as to the period ending no more than five business days
prior to the date of such letter) with respect to such registration as such
underwriters reasonably may request;</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(h)</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>make
available for inspection by each seller of Restricted Stock, any underwriter
participating in any distribution pursuant to such registration statement, and
any attorney, accountant or other agent retained by such seller or underwriter,
reasonable access to all financial and other records, pertinent corporate
documents and properties of the Company, as such parties may reasonably
request, and cause the Company&#146;s officers, directors and employees to supply
all information reasonably requested by any such seller, underwriter, attorney,
accountant or agent in connection with such registration statement;</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(i)</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>cooperate
with the selling holders of Restricted Stock and the managing underwriters, if
any, to facilitate the timely preparation and delivery of certificates
representing Restricted Stock to be sold, such certificates to be in such
denominations and registered in such names as such holders or the managing
underwriters may request at least two business days prior to any sale of
Restricted Stock; and</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(j)</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>permit
any holder of Restricted Stock which holder, in the sole and exclusive
judgment, exercised in good faith, of such holder, might be deemed to be a
controlling person of the Company, to participate in good faith in the
preparation of such registration or comparable statement and to require the
insertion therein of material, furnished to the Company in writing, which in
the reasonable judgment of such holder and its counsel should be included and
to permit any other holder of Restricted Stock participating in the
registration to review such registration or comparable statement during its
preparation.</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">For purposes of Section&nbsp;7(a) and 7(b) and of
Section&nbsp;4(c), the period of distribution of Restricted Stock in a firm
commitment underwritten public offering shall be deemed to extend until each
underwriter has completed the distribution of all securities purchased by it,
and the period of distribution of Restricted Stock in any other registration
shall be deemed to extend until the earlier of the sale of all Restricted Stock
covered thereby and 180&nbsp;days after the effective date thereof.</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">In connection with each registration hereunder, the
sellers of Restricted Stock will furnish to the Company in writing such
information requested by the Company with respect to themselves and the
proposed distribution by them as reasonably shall be necessary in order to
assure compliance with federal and applicable state securities laws and to make
the registration statement correct, accurate and complete in all respects with
respect to such</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

</font></div>

</div>
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<p align="center" style="layout-grid-mode:char;margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">sellers; <u>provided</u>,
<u>however</u>, that this requirement shall not be
deemed to limit any disclosure obligation arising out of any seller&#146;s
relationship to the Company if one of such seller&#146;s agents or affiliates is an
officer, director or control person of the Company.&#160; In addition, the sellers shall, if requested
by the Company, execute such other agreements, which are reasonably satisfactory
to them and which shall contain such provisions as may be customary and
reasonable in order to accomplish the registration of the Restricted Stock.</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">In connection with each registration pursuant to
Sections&nbsp;4, 5 or 6 covering an underwritten public offering, the Company
and each seller agree to enter into a written agreement with the managing
underwriter selected in the manner herein provided in such form and containing
such provisions as are customary in the securities business for such an arrangement
between such underwriter and companies of the Company&#146;s size and investment
stature.</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">8.</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><u>Expenses</u>.&#160; All expenses incurred by the Company in
complying with Sections&nbsp;4, 5 and 6, including, without limitation, all
registration and filing fees, printing expenses, fees and disbursements of
counsel and independent public accountants for the Company, fees and expenses
(including counsel fees) incurred in connection with complying with state
securities or &#147;blue sky&#148; laws, fees and expenses of one counsel for the selling
holders of Restricted Stock in connection with the registration of Restricted
Stock, fees of the National Association of Securities Dealers, Inc., transfer
taxes, fees of transfer agents and registrars, costs of any insurance which
might be obtained, but excluding any Selling Expenses, are called &#147;<u>Registration
Expenses</u>.&#148;&#160; All underwriting
discounts and selling commissions applicable to the sale of Restricted Stock
and the fees and expenses of more than one counsel for the selling holders of
Restricted Stock in connection with the registration of Restricted Stock are
called &#147;<u>Selling Expenses</u>.&#148;</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The Company will pay all Registration Expenses
incurred in connection with each of the first five Registration Statements
filed pursuant to Sections&nbsp;4, 5 or 6.&#160;
All Selling Expenses incurred in connection with each of the first five
Registration Statements filed pursuant to Sections&nbsp;4, 5 or 6, and all
Selling Expenses and Registration Expenses incurred in connection with each
Registration Statement filed pursuant to Sections 4, 5 or 6 thereafter, shall
be borne by the participating sellers in proportion to the number of shares
sold by each, or by such participating sellers other than the Company (except
to the extent the Company shall be a seller) as they may agree.</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">9.</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><u>Indemnification</u>.</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(a)</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>To
the extent permitted by law, in the event of a registration of any of the
Restricted Stock under the Securities Act pursuant to Sections&nbsp;4, 5 or 6,
the Company will indemnify and hold harmless each holder of Restricted Stock,
its partners, members, officers and directors, each underwriter of such
Restricted Stock thereunder and each other person, if any, who controls such
seller or underwriter within the meaning of the Securities Act, against any
losses, claims, damages or liabilities, joint or several, to which such holder,
officer, director, underwriter or controlling person may become subject under
the Securities Act, Exchange Act or otherwise, insofar as such losses, claims,
damages or liabilities (or</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

</font></div>

</div>
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<p align="center" style="layout-grid-mode:char;margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">actions in respect
thereof) arise out of or are based upon (i) any untrue statement or alleged
untrue statement of any material fact contained in any registration statement
under which such Restricted Stock was registered under the Securities Act
pursuant to Sections&nbsp;4, 5 or 6, any preliminary prospectus (but only to
the extent not corrected in the final prospectus) or final prospectus contained
therein, or any amendment or supplement thereof, (ii) any blue sky application
or other document executed by the Company specifically for that purpose or
based upon written information furnished by the Company filed in any state or
other jurisdiction in order to qualify any or all of the Restricted Stock under
the securities laws thereof (any such application, document or information
herein called a &#147;<u>Blue Sky Application</u>&#148;), (iii) the omission or alleged
omission to state therein a material fact required to be stated therein or
necessary to make the statements therein not misleading, (iv) any violation by
the Company or its agents of any rule or regulation promulgated under the
Securities Act or Exchange Act applicable to the Company or its agents and
relating to action or inaction required of the Company in connection with such
registration, or (v) any failure to register or qualify the Restricted Stock in
any state where the Company or its agents has affirmatively undertaken or
agreed in writing that the Company (the undertaking of any underwriter chosen
by the Company being attributed to the Company) will undertake such registration
or qualification on the seller&#146;s behalf (provided that in such instance the
Company shall not be so liable if it has undertaken its best efforts to so
register or qualify the Restricted Stock) and will reimburse each such holder,
and such partner, member, officer and director, each such underwriter and each
such controlling person for any legal or other expenses reasonably incurred by
them in connection with investigating or defending any such loss, claim,
damage, liability or action as such expenses are incurred; <u>provided</u>, <u>however</u>,
that the Company will not be liable in any such case if and to the extent that
any such loss, claim, damage or liability arises out of or is based upon an
untrue statement or alleged untrue statement or omission or alleged omission so
made in conformity with information furnished by any such seller, any such
underwriter or any such controlling person in writing specifically for use in
such registration statement, prospectus or Blue Sky Application.</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(b)</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>To the
extent permitted by law, in the event of a registration of any of the
Restricted Stock under the Securities Act pursuant to Sections&nbsp;4, 5 or 6,
each seller of such Restricted Stock thereunder, severally and not jointly,
will indemnify and hold harmless the Company, each person, if any, who controls
the Company within the meaning of the Securities Act, each officer of the
Company who signs the registration statement, each director of the Company,
each other holder of Restricted Stock, each underwriter and each person who controls
any underwriter within the meaning of the Securities Act, against all losses,
claims, damages or liabilities, joint or several, to which the Company or such
officer, director, other seller, underwriter or controlling person may become
subject under the Securities Act, Exchange Act or otherwise, insofar as such
losses, claims, damages or liabilities (or actions in respect thereof) arise
out of or are based upon any untrue statement or alleged untrue statement of
any material fact contained in the registration statement under which such
Restricted Stock was registered under the Securities Act pursuant to
Sections&nbsp;4, 5 or 6, any preliminary prospectus (but only to the extent not
corrected in the final prospectus) or final prospectus contained therein, or any
amendment or supplement thereof, or any Blue Sky Application or arise out of or
are based upon the omission or alleged omission to state therein a material
fact required to be stated therein or necessary to make the statements</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

</font></div>

</div>
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<p align="center" style="layout-grid-mode:char;margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">therein not misleading, and will reimburse the Company
and each such officer, director, other seller, underwriter and controlling
person for any legal or other expenses reasonably incurred by them in
connection with investigating or defending any such loss, claim, damage, liability
or action; <u>provided</u>, <u>however</u>, that such seller will be liable
hereunder in any such case if and only to the extent that any such loss, claim,
damage or liability arises out of or is based upon an untrue statement or
alleged untrue statement or omission or alleged omission made in reliance upon
and in conformity with information pertaining to such seller, as such,
furnished in writing to the Company by such seller specifically for use in such
registration statement, prospectus or Blue Sky Application; and <u>provided</u>,
<u>further</u>, <u>however</u>, that the liability of each seller hereunder
shall be limited to the proportion of any such loss, claim, damage, liability
or expense which is equal to the proportion that the public offering price of
the shares sold by such seller under such registration statement bears to the
total public offering price of all securities sold thereunder, but not in any
event to exceed the net proceeds received by such seller from the sale of
Restricted Stock covered by such registration statement.</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(c)</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Promptly
after receipt by an indemnified party hereunder of notice of the commencement
of any action, such indemnified party shall, if a claim in respect thereof is
to be made against the indemnifying party hereunder, notify the indemnifying party
in writing thereof, but the omission so to notify the indemnifying party shall
not relieve it from any liability which it may have to such indemnified party
other than under this Section&nbsp;9 and shall only relieve it from any
liability which it may have to such indemnified party under this Section&nbsp;9
if and to the extent the indemnifying party is prejudiced by such
omission.&#160; In case any such action shall
be brought against any indemnified party and it shall notify the indemnifying
party of the commencement thereof, the indemnifying party shall be entitled to
participate in and, to the extent it shall wish, to assume and undertake the
defense thereof with counsel satisfactory to such indemnified party, and, after
notice from the indemnifying party to such indemnified party of its election so
to assume and undertake the defense thereof, the indemnifying party shall not
be liable to such indemnified party under this Section&nbsp;9 for any legal
expenses subsequently incurred by such indemnified party in connection with the
defense thereof other than reasonable costs of investigation and of liaison
with counsel so selected; <u>provided</u>, <u>however</u>, that, if the
defendants in any such action include both the indemnified party and the
indemnifying party and the indemnified party shall have reasonably concluded
that the interests of the indemnified party reasonably may be deemed to
conflict with the interests of the indemnifying party, the indemnified party
shall have the right to select a separate counsel and to assume such legal
defenses and otherwise to participate in the defense of such action, with the
expenses and fees of such separate counsel and other expenses related to such
participation to be reimbursed by the indemnifying party as incurred. No
indemnifying party, in the defense of any such claim or litigation shall,
except with the consent of each indemnified party, consent to entry of any
judgment or enter into any settlement which does not include as an
unconditional term thereof the giving by the claimant or plaintiff to such
indemnified party of a release from all liability in respect of such claim or
litigation, and no indemnified party shall consent to entry of any judgment or
settle such claim or litigation without the prior written consent of the
indemnifying party, which consent shall not be unreasonably withheld.</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(d)</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>If the
indemnification provided for in this Section&nbsp;9 is held by a court</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

</font></div>

</div>
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<p align="center" style="layout-grid-mode:char;margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">of competent jurisdiction to be unavailable to an
indemnified party with respect to any losses, claims, damages or liabilities
referred to herein, the indemnifying party, in lieu of indemnifying such
indemnified party thereunder, shall to the extent permitted by applicable law
contribute to the amount paid or payable by such indemnified party as a result
of such loss, claim, damage or liability in such proportion as is appropriate
to reflect the relative fault of the indemnifying party on the one hand and of
the indemnified party on the other in connection with the violation that
resulted in such loss, claim, damage or liability, as well as any other
relevant equitable considerations.&#160; The
relative fault of the indemnifying party and of the indemnified party shall be
determined by a court of law by reference to, among other things, whether the
untrue or alleged untrue statement of a material fact or the omission or
alleged omission to state a material fact relates to information supplied by
the indemnifying party or by the indemnified party and the parties&#146; relative
intent, knowledge, access to information and opportunity to correct or prevent
such statement or omission; <u>provided</u>, <u>however</u>, that in no event
shall any contribution by a holder of Restricted Stock hereunder, when combined
with amounts paid or payable pursuant to Section 9(b), exceed the net proceeds
from the offering received by such holder.</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(e)</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>The
obligations of the Company and holders of Restricted Stock under this
Section&nbsp;9 shall survive completion of any offering of Restricted Stock by
a registration statement and the termination of this Agreement.</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><u>Changes
in Common Stock, Series F Preferred Stock, Series G Preferred Stock, Series I Preferred Stock, Series J Preferred Stock, Series K
Preferred Stock, or Series L Preferred Stock</u>.&#160; If, and as often as, there is any change in
the Common Stock, Series F Preferred Stock, Series G Preferred Stock, Series I
Preferred Stock, Series J Preferred Stock, Series K Preferred Stock, or Series
L Preferred Stock by way of a stock split, stock dividend, combination or
reclassification, or through a merger, consolidation, reorganization or
recapitalization, or by any other means, appropriate adjustment shall be made
in the provisions hereof so that the rights and privileges granted hereby shall
continue with respect to the Common Stock, Series F Preferred Stock, Series G Preferred
Stock, Series I Preferred Stock, Series J Preferred Stock, Series K Preferred
Stock, or Series L Preferred Stock as so changed.</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">11.</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><u>Rule
144 Reporting</u>.&#160; With a view to making
available the benefits of certain rules and regulations of the Commission which
may at any time permit the sale of the Restricted Stock to the public without
registration, at all times after any registration statement covering a public
offering of securities of the Company under the Securities Act shall have
become effective, the Company agrees to:</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(a)</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>make and keep public information available, as those terms
are understood and defined in Rule&nbsp;144 under the Securities Act;</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(b)</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>use its
best efforts to file with the Commission in a timely manner all reports and
other documents required of the Company under the Securities Act and the
Exchange Act; and</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

</font></div>

</div>
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<div style="font-family:Times New Roman;">

<p align="center" style="layout-grid-mode:char;margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(c)</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>furnish to
each holder of Restricted Stock forthwith upon request a written statement by
the Company as to its compliance with the reporting requirements of such
Rule&nbsp;144 and of the Securities Act and the Exchange Act, a copy of the
most recent annual or quarterly report of the Company, and such other reports
and documents so filed by the Company as such holder may reasonably request in
availing itself of any rule or regulation of the Commission allowing such
holder to sell any Restricted Stock without registration.</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">12.</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><u>Representations
and Warranties of the Company</u>.&#160; The
Company represents and warrants to you as follows:</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(a)</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>The
execution, delivery and performance of this Agreement by the Company have been
duly authorized by all requisite corporate action and will not violate any
provision of law, any order of any court or other agency of government, the
articles of organization or By-laws of the Company or any provision of any
indenture, agreement or other instrument to which it or any or its properties
or assets is bound, conflict with, result in a breach of or constitute (with
due notice or lapse of time or both) a default under any such indenture,
agreement or other instrument or result in the creation or imposition of any
lien, charge or encumbrance of any nature whatsoever upon any of the properties
or assets of the Company.</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(b)</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>This
Agreement has been duly executed and delivered by the Company and constitutes
the legal, valid and binding obligation of the Company, enforceable in
accordance with its terms.</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">13.</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><u>Miscellaneous</u>.</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(a)</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>All
covenants and agreements contained in this Agreement by or on behalf of any of
the parties hereto shall bind and inure to the benefit of the respective
successors and assigns of the parties hereto (including without limitation
transferees of any Preferred Stock or Restricted Stock), whether so expressed
or not; <u>provided</u>, <u>however</u>, that registration rights conferred
herein on the holders of Preferred Stock or Restricted Stock shall only inure
to the benefit of a transferee of Preferred Stock or Restricted Stock if
(i)&nbsp;there is transferred to such transferee at least twenty five percent
(25%) of the shares of Restricted Stock (appropriately adjusted for any
subdivision or combination) originally issued to a Purchaser, (ii)&nbsp;such
transferee is a member, former member, partner, retired partner, family member
or trust for the benefit of any individual holder, stockholder or affiliate of
a party hereto or (iii) such transferee acquires at least 2,500,000 shares
(appropriately adjusted for any subdivision or combination) of Preferred Stock
on an as converted to shares of Common Stock basis; <u>provided</u>, <u>further</u>,
<u>however</u>, that the Company is given written notice thereof.</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(b)</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>All
notices, requests, consents and other communications hereunder shall be in
writing and shall be mailed by certified or registered mail, return receipt
requested, postage prepaid, or by recognized overnight delivery service of
international reputation or, in the case of non-U.S. residents, telexed or sent
by recognized overnight delivery service of international reputation or,
addressed as follows:</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

</font></div>

</div>
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<div style="font-family:Times New Roman;">

<p align="center" style="layout-grid-mode:char;margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt 1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">If to the Company,
to:</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt 1.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt 1.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Cogent
Communications Group, Inc.</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt 1.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">1015 31st Street,
N.W.</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt 1.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Washington, DC
20007,</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt 1.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Attention:&#160; Robert Beury</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt 1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt 94.5pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">with</font>
copies to:</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt 1.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt 1.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Latham &amp;
Watkins, LLP</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt 1.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">555 Eleventh St.,
N.W., Suite 1000</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt 1.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Washington, D.C.
20004</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt 1.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Attention: David
McPherson</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">If to any other
party hereto, to their respective addresses set forth on Schedule I hereto;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">If to any subsequent holder of Preferred Stock or
Restricted Stock, to it at such address as may have been furnished to the
Company in writing by such holder;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">or, in any case, at such other address or addresses as
shall have been furnished in writing to the Company (in the case of a holder of
Preferred Stock or Restricted Stock) or to the holders of Preferred Stock or
Restricted Stock (in the case of the Company) in accordance with the provisions
of this paragraph.</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(c)</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>This
Agreement shall be construed and enforced in accordance with and governed by
the laws of the State of New York, without reference to its conflict of laws
provisions.</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(d)</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>This
Agreement may not be amended or modified, and no provision hereof may be
waived, without the written consent of the Company and the holders of at least
two-thirds of the outstanding shares of Restricted Stock.&#160; Notwithstanding the foregoing, no such
amendment or modification shall be effective if and to the extent that such
amendment or modification either (a) creates any additional affirmative
obligations to be complied with by any or all of the Purchasers or (b) grants
to any one or more Purchasers any rights more favorable than any rights granted
to all other Purchasers or otherwise treats any one or more Purchasers
differently than all other Purchasers.</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(e)</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>This
Agreement may be executed in two or more counterparts, each of which shall be
deemed an original, but all of which together shall constitute one and the same
instrument.</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(f)</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font> If
requested in writing by the underwriters for the first underwritten public
offering of securities of the Company after the date hereof, each holder of
Restricted Stock who is a party to this Agreement shall agree not to sell
publicly any shares of</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

</font></div>

</div>
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<div style="font-family:Times New Roman;">

<p align="center" style="layout-grid-mode:char;margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Restricted Stock or any other shares of Common Stock
(other than shares of Restricted Stock or other shares of Common Stock being
registered in such offering or any shares purchased in the open market after
the Company&#146;s public offering), without the consent of such underwriters, for a
period of not more than 180&nbsp;days following the consummation of such public
offering; <u>provided</u>, <u>however</u>, that all holders of at least one
percent (1%) of the then outstanding Common Stock and all officers and
directors of the Company shall also have agreed not to sell publicly their
Common Stock under the circumstances and pursuant to the terms set forth in
this Section&nbsp;13(f).</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(g)</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>If any
provision of this Agreement shall be held to be illegal, invalid or
unenforceable, such illegality, invalidity or unenforceability shall attach
only to such provision and shall not in any manner affect or render illegal,
invalid or unenforceable any other provision of this Agreement, and this
Agreement shall be carried out as if any such illegal, invalid or unenforceable
provision were not contained herein.</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(h)</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>This
Agreement shall amend and restate in its entirety the Fifth Amended and
Restated Registration Rights Agreement, dated August 12, 2004, by and among the
Company and the other parties thereto (the &#147;<u>Prior Registration Rights
Agreement</u>&#148;), the parties hereto constitute the Company and the holders of
at least two-thirds of the outstanding shares of Restricted Stock (as defined
in the Prior Registration Rights Agreement) immediately prior to the execution
of this Agreement.</p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(i)</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">After the date of this Agreement, the Company shall
not, without the prior written consent of the holders of at least two-thirds of
the Restricted Stock then outstanding, enter into any agreement with any holder
or prospective holder of any securities of the Company that would grant such
holder registration rights <i><font style="font-style:italic;">pari passu</font></i>
or senior to those granted to the holders hereunder, other than a registration
related to stock issued upon conversion of debt securities assumed by the
Company in connection with its acquisition of Allied Riser Communications
Corporation.</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(j)</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>All
registration rights granted under Sections 4, 5, and 6 shall terminate and be
of no further force and effect upon the earlier of (i) three (3) years after
the date the Company first effects a registration pursuant to Section 4 or (ii)
five (5) years from the date hereof.&#160; In
addition, the registration rights of a holder of Restricted Stock shall expire
if all Restricted Stock held by and issuable to such holder (and its affiliates)
may be sold under Rule&nbsp;144 during any ninety (90) day period.</p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="layout-grid-mode:char;margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">[REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]</font></b></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

</font></div>

</div>
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<div>

<p align="center" style="layout-grid-mode:char;margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Please indicate
your acceptance of the foregoing by signing and returning the enclosed
counterpart of this letter, whereupon this Agreement shall be a binding
agreement between the Company and you.</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Please indicate your
acceptance of the foregoing by signing and returning the enclosed counterpart
of this letter, whereupon this Agreement shall be a binding agreement between
the Company and you.</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.66%;">
  <p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:58.34%;">
  <p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Very truly yours,</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.66%;">
  <p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:58.34%;">
  <p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.66%;">
  <p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:58.34%;">
  <p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.66%;">
  <p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:58.34%;">
  <p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">COGENT COMMUNICATIONS
  GROUP,<br>
  INC.</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.66%;">
  <p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:58.34%;">
  <p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.66%;">
  <p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:58.34%;">
  <p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.66%;">
  <p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.5%;">
  <p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="25%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:25.1%;">
  <p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/David Schaeffer</font></p>
  </td>
  <td width="29%" valign="top" style="padding:0in 0in 0in 0in;width:29.76%;">
  <p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.66%;">
  <p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:58.34%;">
  <p style="layout-grid-mode:char;margin:0in 0in .0001pt 20.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:
  David Schaeffer</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.66%;">
  <p style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:58.34%;">
  <p style="layout-grid-mode:char;margin:0in 0in .0001pt 20.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Its:
  Chief Executive Officer</font></p>
  </td>
 </tr>
</table>

<p align="center" style="layout-grid-mode:char;margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

</font></div>

</div>
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<div>

<p align="center" style="layout-grid-mode:char;margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">[Signature Page to Sixth Amended
and Restated Registration Rights Agreement]</font></i></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">OAK INVESTMENT PARTNERS
  IX,</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">LIMITED PARTNERSHIP</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:6.24%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="52%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:52.34%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Oak Associates IX,
  LLC,its General Partner</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:11.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:11.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="32%" colspan="2" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:32.5%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/Edward Glassmeyer</font></p>
  </td>
  <td width="22%" valign="top" style="padding:0in 0in 0in 0in;width:22.66%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name: Edward Glassmeyer</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title: Managing Member</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">OAK IX AFFILIATES FUND, LIMITED
  PARTNERSHIP</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:6.24%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="52%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:52.34%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Oak IX Affiliates, LLC,
  its General Partner</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:11.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:11.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="32%" colspan="2" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:32.5%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/Edward Glassmeyer</font></p>
  </td>
  <td width="22%" valign="top" style="padding:0in 0in 0in 0in;width:22.66%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name: Edward Glassmeyer</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title: Managing Member</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">OAK IX AFFILIATES FUND-A, LIMITED
  PARTNERSHIP</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:6.24%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="52%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:52.34%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Oak Associates IX, LLC,
  its General Partner</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:11.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:11.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="32%" colspan="2" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:32.5%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/Edward Glassmeyer</font></p>
  </td>
  <td width="22%" valign="top" style="padding:0in 0in 0in 0in;width:22.66%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name: Edward Glassmeyer</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title: Managing Member</font></p>
  </td>
 </tr>
 <tr height="0">
  <td width="310" style="border:none;"></td>
  <td width="26" style="border:none;"></td>
  <td width="21" style="border:none;"></td>
  <td width="222" style="border:none;"></td>
  <td width="169" style="border:none;"></td>
 </tr>
</table>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

</font></div>

</div>
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<br clear="all" style="page-break-before:always;">


<div style="font-family:Times New Roman;">

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">[Signature Page to Sixth Amended
and Restated Registration Rights Agreement]</font></i></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">JERUSALEM VENTURE PARTNERS III, L.P.</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:6.24%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="52%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:52.34%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Jerusalem Partners III,
  L.P., its General Partner</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:6.24%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="52%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:52.34%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Jerusalem Venture
  Partners Corporation, its</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:6.24%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="52%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:52.34%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">General Partner</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:11.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:11.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="22%" colspan="2" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:22.92%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/Erel Margalit</font></p>
  </td>
  <td width="32%" valign="top" style="padding:0in 0in 0in 0in;width:32.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name: Erel Margalit</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">JERUSALEM VENTURE
  PARTNERS III</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(ISRAEL), L.P.</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:6.24%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="52%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:52.34%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Jerusalem Venture
  Partners III (Israel) Management<br>
  Company Ltd., its General Partner</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:11.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:11.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="22%" colspan="2" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:22.92%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/Erel Margalit</font></p>
  </td>
  <td width="32%" valign="top" style="padding:0in 0in 0in 0in;width:32.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name: Erel Margalit</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">JERUSALEM VENTURE
  PARTNERS</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">ENTREPRENEURS FUND III, L.P.</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:6.24%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="52%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:52.34%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Jerusalem Partners III,
  L.P., its General Partner</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:6.24%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="52%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:52.34%;">
  <p style="font-size:11.0pt;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Jerusalem Venture
  Partners Corporation, its<br>
  </font>General Partner</p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="22%" colspan="2" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:22.92%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/Erel Margalit</font></p>
  </td>
  <td width="32%" valign="top" style="padding:0in 0in 0in 0in;width:32.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name: Erel Margalit</font></p>
  </td>
 </tr>
 <tr height="0">
  <td width="310" style="border:none;"></td>
  <td width="26" style="border:none;"></td>
  <td width="21" style="border:none;"></td>
  <td width="150" style="border:none;"></td>
  <td width="241" style="border:none;"></td>
 </tr>
</table>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

</font></div>

</div>
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<br clear="all" style="page-break-before:always;">


<div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">[Signature Page to Sixth Amended
and Restated Registration Rights Agreement]</font></i></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">JERUSALEM VENTURE PARTNERS IV, L.P.</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:6.24%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="52%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:52.34%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Jerusalem Partners IV,
  L.P., its General Partner</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:6.24%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="52%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:52.34%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">JVP Corp IV, its
  General Partner</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="23%" colspan="2" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:23.08%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/Erel Margalit</font></p>
  </td>
  <td width="32%" valign="top" style="padding:0in 0in 0in 0in;width:32.08%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name: Erel Margalit</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">JERUSALEM VENTURE
  PARTNERS IV (Israel), L.P.</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:6.24%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="52%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:52.34%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Jerusalem Partners IV &#150;
  Venture Capital, L.P.,</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:6.24%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="52%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:52.34%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">its General Partner</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:6.24%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="52%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:52.34%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">JVP Corp IV, its
  General Partner</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="23%" colspan="2" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:23.08%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/Erel Margalit</font></p>
  </td>
  <td width="32%" valign="top" style="padding:0in 0in 0in 0in;width:32.08%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name: Erel Margalit</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">JERUSALEM VENTURE PARTNERS IV-A, L.P.</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:6.24%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="52%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:52.34%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Jerusalem Venture
  Partners IV, L.P., its General</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:6.24%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="52%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:52.34%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Partner</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:6.24%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="52%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:52.34%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">JVP Corp IV, its
  General Partner</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="23%" colspan="2" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:23.08%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/Erel Margalit</font></p>
  </td>
  <td width="32%" valign="top" style="padding:0in 0in 0in 0in;width:32.08%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name: Erel Margalit</font></p>
  </td>
 </tr>
 <tr height="0">
  <td width="310" style="border:none;"></td>
  <td width="26" style="border:none;"></td>
  <td width="21" style="border:none;"></td>
  <td width="152" style="border:none;"></td>
  <td width="240" style="border:none;"></td>
 </tr>
</table>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

</font></div>

</div>
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<div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">[Signature Page to Sixth Amended
and Restated Registration Rights Agreement]</font></i></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">WORLDVIEW TECHNOLOGY</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">PARTNERS III, L.P.</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">WORLDVIEW TECHNOLOGY</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">INTERNATIONAL III, L.P.</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">WORLDVIEW STRATEGIC PARTNERS III, L.P.</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">WORLDVIEW III CARRIER FUND, L.P.</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:6.24%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="52%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:52.34%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Worldview Capital III,
  L.P., its General Partner</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:11.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:11.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="26%" colspan="2" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:26.66%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/James Wei</font></p>
  </td>
  <td width="28%" valign="top" style="padding:0in 0in 0in 0in;width:28.5%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name: James Wei</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">WORLDVIEW TECHNOLOGY</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">PARTNERS IV, L.P.</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">WORLDVIEW TECHNOLOGY</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">INTERNATIONAL IV, L.P.</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">WORLDVIEW STRATEGIC PARTNERS IV, L.P.</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:6.24%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="52%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:52.34%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Worldview Capital IV,
  L.P., its General Partner</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:11.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:11.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="26%" colspan="2" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:26.66%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/James Wei</font></p>
  </td>
  <td width="28%" valign="top" style="padding:0in 0in 0in 0in;width:28.5%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name: James Wei</font></p>
  </td>
 </tr>
 <tr height="0">
  <td width="310" style="border:none;"></td>
  <td width="26" style="border:none;"></td>
  <td width="21" style="border:none;"></td>
  <td width="178" style="border:none;"></td>
  <td width="213" style="border:none;"></td>
 </tr>
</table>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

</font></div>

</div>
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<div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">[Signature Page to Sixth Amended
and Restated Registration Rights Agreement]</font></i></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">BCP CAPITAL, L.P.</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:6.24%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="52%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:52.34%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">BCP General LLC, its
  General Partner</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:11.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:11.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="27%" colspan="2" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:27.38%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/Steven D. Brooks</font></p>
  </td>
  <td width="27%" valign="top" style="padding:0in 0in 0in 0in;width:27.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:6.24%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name:</font></p>
  </td>
  <td width="52%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:52.34%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Steven D. Brooks</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:6.24%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title:</font></p>
  </td>
  <td width="52%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:52.34%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Managing Director</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">BCP CAPITAL QPF, L.P.</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:6.24%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="52%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:52.34%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">BCP General LLC, its General Partner</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="27%" colspan="2" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:27.38%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/Steven D. Brooks</font></p>
  </td>
  <td width="27%" valign="top" style="padding:0in 0in 0in 0in;width:27.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:6.24%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name:</font></p>
  </td>
  <td width="52%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:52.34%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Steven D. Brooks</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:6.24%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title:</font></p>
  </td>
  <td width="52%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:52.34%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Managing Director</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">BCP AFFILIATES FUND LLC</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:6.24%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="52%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:52.34%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">BCP Capital Management LLC, its Manager</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="27%" colspan="2" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:27.38%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/Steven D. Brooks</font></p>
  </td>
  <td width="27%" valign="top" style="padding:0in 0in 0in 0in;width:27.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:6.24%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name:</font></p>
  </td>
  <td width="52%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:52.34%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Steven D. Brooks</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:6.24%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title:</font></p>
  </td>
  <td width="52%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:52.34%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Managing Director</font></p>
  </td>
 </tr>
 <tr height="0">
  <td width="310" style="border:none;"></td>
  <td width="26" style="border:none;"></td>
  <td width="21" style="border:none;"></td>
  <td width="184" style="border:none;"></td>
  <td width="208" style="border:none;"></td>
 </tr>
</table>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

</font></div>

</div>
<!-- SEQ.=1,FOLIO='',FILE='C:\JMS\mgovind\04-13482-1\task228894\13482-1-ki.htm',USER='mgovindarajulu',CD='Nov 13 10:37 2004' -->


<br clear="all" style="page-break-before:always;">


<div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">[Signature Page to Sixth Amended
and Restated Registration Rights Agreement]</font></i></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">BOULDER VENTURES IV, L.P.</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="27%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:27.24%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/Andrew E. Jones</font></p>
  </td>
  <td width="27%" valign="top" style="padding:0in 0in 0in 0in;width:27.92%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name: Andrew E. Jones</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title: General Partner</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">BOULDER VENTURES IV (ANNEX), L.P.</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="27%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:27.24%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/Andrew E. Jones</font></p>
  </td>
  <td width="27%" valign="top" style="padding:0in 0in 0in 0in;width:27.92%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name: Andrew E. Jones</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title: General Partner</font></p>
  </td>
 </tr>
</table>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

</font></div>

</div>
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<br clear="all" style="page-break-before:always;">


<div style="font-family:Times New Roman;">

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">[Signature Page to Sixth Amended
and Restated Registration Rights Agreement]</font></i></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">NAS PARTNERS I L.L.C.</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:6.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="52%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:52.32%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Nassau Capital LLC,<br>
  its General Partner</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="27%" colspan="2" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:27.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/Randall A. Hack</font></p>
  </td>
  <td width="27%" valign="top" style="padding:0in 0in 0in 0in;width:27.9%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:6.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name:</font></p>
  </td>
  <td width="52%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:52.32%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Randall A. Hack</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:6.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title:</font></p>
  </td>
  <td width="52%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:52.32%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Managing Member</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">NASSAU CAPITAL PARTNERS IV L.P.</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:6.26%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="52%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:52.32%;">
  <p style="font-size:11.0pt;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Nassau Capital LLC,<br>
  </font>its General Partner</p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="27%" colspan="2" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:27.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/Randall A. Hack</font></p>
  </td>
  <td width="27%" valign="top" style="padding:0in 0in 0in 0in;width:27.9%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:6.24%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name:</font></p>
  </td>
  <td width="52%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:52.34%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Randall A. Hack</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:6.24%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title:</font></p>
  </td>
  <td width="52%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:52.34%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Managing Member</font></p>
  </td>
 </tr>
 <tr height="0">
  <td width="310" style="border:none;"></td>
  <td width="26" style="border:none;"></td>
  <td width="21" style="border:none;"></td>
  <td width="183" style="border:none;"></td>
  <td width="209" style="border:none;"></td>
 </tr>
</table>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

</font></div>

</div>
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<div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">[Signature Page to Sixth Amended
and Restated Registration Rights Agreement]</font></i></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">BNP EUROPE TELECOM &amp; MEDIA FUND II, LP</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="35%" colspan="2" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:35.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/Shawna Morehouse &nbsp;/s/Martin Wm. Laidlaw</font></p>
  </td>
  <td width="19%" valign="top" style="padding:0in 0in 0in 0in;width:19.74%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name: Shawna Morehouse &amp; Martin Laidlaw</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title: Authorized Signatories</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By: General Business, Finance and
  Investment Ltd.,</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">its General Partner and By: Commerce
  Advisory<br>
  Services Ltd, as Director and Partnership Secretary</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">NATIO VIE DEVELOPPEMENT 3, FCPR</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="32%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:32.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/Bernard d&#146;Hotelans</font></p>
  </td>
  <td width="23%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:23.14%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name: Bernard d&#146;Hotelans</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title: Directeur Associe</font></p>
  </td>
 </tr>
 <tr height="0">
  <td width="310" style="border:none;"></td>
  <td width="26" style="border:none;"></td>
  <td width="239" style="border:none;"></td>
  <td width="26" style="border:none;"></td>
  <td width="148" style="border:none;"></td>
 </tr>
</table>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

</font></div>

</div>
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<div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">[Signature Page to Sixth Amended
and Restated Registration Rights Agreement]</font></i></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="29%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:29.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/David Schaeffer</font></p>
  </td>
  <td width="25%" valign="top" style="padding:0in 0in 0in 0in;width:25.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt 40.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">David Schaeffer</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">THE SCHAEFFER DESCENDENTS TRUST</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="29%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:29.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/Ruth Schaeffer</font></p>
  </td>
  <td width="25%" valign="top" style="padding:0in 0in 0in 0in;width:25.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt 40.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Ruth Schaeffer</font></p>
  </td>
 </tr>
</table>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

</font></div>

</div>
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<div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">[Signature Page to Sixth Amended
and Restated Registration Rights Agreement]</font></i></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">UFO COMMUNICATIONS, INC.</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="26%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:26.46%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/Jay Ferguson</font></p>
  </td>
  <td width="28%" valign="top" style="padding:0in 0in 0in 0in;width:28.7%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name: Jay Ferguson</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <h6 style="font-weight:normal;margin:0in 0in .0001pt;page-break-after:auto;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></h6>
  </td>
  <td width="58%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <h6 style="font-weight:normal;margin:0in 0in .0001pt;page-break-after:auto;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title: Chairman</font></h6>
  </td>
 </tr>
</table>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

</font></div>

</div>
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<div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">[Signature Page to Sixth Amended
and Restated Registration Rights Agreement]</font></i></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="6" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">PALADIN CAPITAL PARTNERS FUND, L.P.</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="6" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:6.24%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="52%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:52.34%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Paladin
  General Holdings, LLC</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:6.24%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="52%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:52.34%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Its
  General Partner</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="6" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="6" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="24%" colspan="4" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:24.5%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/Michael
  R. Steed</font></p>
  </td>
  <td width="30%" valign="top" style="padding:0in 0in 0in 0in;width:30.66%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="6" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name:
  Michael R. Steed</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="6" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title:
  President</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="6" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="6" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="6" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">WORLDWIDE
  INVESTMENTS, LLC</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="6" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="6" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:
  Worldwide Assets, Inc., its Sole Member</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="6" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="24%" colspan="4" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:24.5%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/Frank
  J. Hanna, Jr.</font></p>
  </td>
  <td width="30%" valign="top" style="padding:0in 0in 0in 0in;width:30.66%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:6.08%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name:</font></p>
  </td>
  <td width="21%" colspan="2" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:21.84%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Frank
  J. Hannah, Jr.</font></p>
  </td>
  <td width="30%" valign="top" style="padding:0in 0in 0in 0in;width:30.66%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="5%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:5.08%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title:</font></p>
  </td>
  <td width="22%" colspan="3" valign="top" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:22.84%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="30%" valign="top" style="padding:0in 0in 0in 0in;width:30.66%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="6" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="6" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="6" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">2001
  PENN. AVE. INVESTMENTS, LLC</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="6" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="6" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="24%" colspan="4" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:24.5%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/Michael
  R. Steed</font></p>
  </td>
  <td width="30%" valign="top" style="padding:0in 0in 0in 0in;width:30.66%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="6" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name:
  Michael R. Steed</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="6" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title:
  President</font></p>
  </td>
 </tr>
 <tr height="0">
  <td width="310" style="border:none;"></td>
  <td width="26" style="border:none;"></td>
  <td width="12" style="border:none;"></td>
  <td width="7" style="border:none;"></td>
  <td width="1" style="border:none;"></td>
  <td width="162" style="border:none;"></td>
  <td width="229" style="border:none;"></td>
 </tr>
</table>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

</font></div>

</div>
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<br clear="all" style="page-break-before:always;">


<div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">[Signature Page to Sixth Amended
and Restated Registration Rights Agreement]</font></i></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.38%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="11" valign="top" style="padding:0in 0in 0in 0in;width:58.62%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">KLINE HAWKES PACIFIC, L.P.</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.38%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="11" valign="top" style="padding:0in 0in 0in 0in;width:58.62%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.38%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="11" valign="top" style="padding:0in 0in 0in 0in;width:58.62%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By: &nbsp;Kline
  Hawkes Pacific Advisors, LLC,</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.38%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="11" valign="top" style="padding:0in 0in 0in 0in;width:58.62%;">
  <p style="margin:0in 0in .0001pt 50.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">its General
  Partner</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.38%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="11" valign="top" style="padding:0in 0in 0in 0in;width:58.62%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.38%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="27%" colspan="9" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:27.12%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/Jay Ferguson</font></p>
  </td>
  <td width="28%" valign="top" style="padding:0in 0in 0in 0in;width:28.08%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.38%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="11" valign="top" style="padding:0in 0in 0in 0in;width:58.62%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.38%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" colspan="5" valign="top" style="padding:0in 0in 0in 0in;width:6.12%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name:</font></p>
  </td>
  <td width="22%" colspan="2" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:22.68%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Jay Ferguson</font></p>
  </td>
  <td width="29%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:29.82%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.38%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="5%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:5.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title:</font></p>
  </td>
  <td width="24%" colspan="6" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:24.62%;">
  <p style="margin:0in 0in .0001pt 20.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Member</font></p>
  </td>
  <td width="29%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:29.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.38%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="11" valign="top" style="padding:0in 0in 0in 0in;width:58.62%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.38%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="11" valign="top" style="padding:0in 0in 0in 0in;width:58.62%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.38%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="11" valign="top" style="padding:0in 0in 0in 0in;width:58.62%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">KLINE HAWKES PACIFIC
  FRIENDS FUND, LLC</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.38%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="11" valign="top" style="padding:0in 0in 0in 0in;width:58.62%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By: &nbsp;Kline
  Hawkes Pacific Advisors, LLC,</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.38%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="11" valign="top" style="padding:0in 0in 0in 0in;width:58.62%;">
  <p style="margin:0in 0in .0001pt 50.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">its Managing
  Member</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.38%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="11" valign="top" style="padding:0in 0in 0in 0in;width:58.62%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.38%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="27%" colspan="9" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:27.12%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/Jay Ferguson</font></p>
  </td>
  <td width="28%" valign="top" style="padding:0in 0in 0in 0in;width:28.08%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.38%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="11" valign="top" style="padding:0in 0in 0in 0in;width:58.62%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.38%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="5%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:5.82%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name:</font></p>
  </td>
  <td width="22%" colspan="3" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:22.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Jay Ferguson</font></p>
  </td>
  <td width="29%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:29.82%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.38%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="5%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:5.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title:</font></p>
  </td>
  <td width="24%" colspan="6" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:24.62%;">
  <p style="margin:0in 0in .0001pt 20.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Member</font></p>
  </td>
  <td width="29%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:29.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.38%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="11" valign="top" style="padding:0in 0in 0in 0in;width:58.62%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.38%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="11" valign="top" style="padding:0in 0in 0in 0in;width:58.62%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.38%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="11" valign="top" style="padding:0in 0in 0in 0in;width:58.62%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">BROADMARK CAPITAL, L.L.C.</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.38%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="11" valign="top" style="padding:0in 0in 0in 0in;width:58.62%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.38%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="11" valign="top" style="padding:0in 0in 0in 0in;width:58.62%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.38%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="27%" colspan="9" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:27.12%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/Joseph L. Schocken</font></p>
  </td>
  <td width="28%" valign="top" style="padding:0in 0in 0in 0in;width:28.08%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.38%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="11" valign="top" style="padding:0in 0in 0in 0in;width:58.62%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.38%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="5%" colspan="4" valign="top" style="padding:0in 0in 0in 0in;width:5.82%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name:</font></p>
  </td>
  <td width="22%" colspan="2" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:22.62%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Joseph L. Schocken</font></p>
  </td>
  <td width="30%" colspan="5" valign="top" style="padding:0in 0in 0in 0in;width:30.18%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.38%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:4.66%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title:</font></p>
  </td>
  <td width="24%" colspan="6" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:24.8%;">
  <p style="margin:0in 0in .0001pt 10.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;&nbsp;President</font></p>
  </td>
  <td width="29%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:29.16%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr height="0">
  <td width="310" style="border:none;"></td>
  <td width="26" style="border:none;"></td>
  <td width="9" style="border:none;"></td>
  <td width="3" style="border:none;"></td>
  <td width="6" style="border:none;"></td>
  <td width="2" style="border:none;"></td>
  <td width="167" style="border:none;"></td>
  <td width="3" style="border:none;"></td>
  <td width="5" style="border:none;"></td>
  <td width="1" style="border:none;"></td>
  <td width="7" style="border:none;"></td>
  <td width="210" style="border:none;"></td>
 </tr>
</table>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

</font></div>

</div>
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<br clear="all" style="page-break-before:always;">


<div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">[Signature Page to Sixth Amended
and Restated Registration Rights Agreement]</font></i></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="5" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">GLOBAL ACCESS TELECOMMUNICATIONS, INC.</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="5" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="5" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="25%" colspan="3" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:25.74%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/John E. Jones</font></p>
  </td>
  <td width="29%" valign="top" style="padding:0in 0in 0in 0in;width:29.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="58%" colspan="5" valign="top" style="padding:0in 0in 0in 0in;width:58.58%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="5%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:5.82%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name:</font></p>
  </td>
  <td width="23%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:23.34%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">John E. Jones</font></p>
  </td>
  <td width="29%" valign="top" style="padding:0in 0in 0in 0in;width:29.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="41%" valign="top" style="padding:0in 0in 0in 0in;width:41.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:4.82%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title:</font></p>
  </td>
  <td width="24%" colspan="2" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:24.34%;">
  <p style="margin:0in 0in .0001pt 20.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Vice President</font></p>
  </td>
  <td width="29%" valign="top" style="padding:0in 0in 0in 0in;width:29.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr height="0">
  <td width="310" style="border:none;"></td>
  <td width="26" style="border:none;"></td>
  <td width="10" style="border:none;"></td>
  <td width="7" style="border:none;"></td>
  <td width="175" style="border:none;"></td>
  <td width="220" style="border:none;"></td>
 </tr>
</table>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div style="layout-grid-mode:char;margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

</font></div>

</div>
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