HUMAN GENOME SCIENCES INC
EX-10.5
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<TYPE>EX-10.5
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<DESCRIPTION>EX-10.5
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<DIV align="right" style="font-size: 10pt; margin-top: 12pt"><B>Exhibit&nbsp;10.5</B>
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><FONT style="font-variant: SMALL-CAPS"><B>Human Genome Sciences, Inc.</B></FONT>
</DIV>


<DIV align="Center" style="font-size: 10pt; margin-top: 6pt"><FONT style="font-variant: SMALL-CAPS"><B>Stock Units Notice</B></FONT><BR>
<FONT style="font-variant: SMALL-CAPS"><B>under the</B></FONT><BR>
<FONT style="font-variant: SMALL-CAPS"><B>Non-Employee Director Equity Compensation Plan</B></FONT>

</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Name of Grantee:</B><U>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</U><U>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</U><U>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</U>
</DIV>
<DIV align="left" style="font-size: 10pt; margin-top: 6pt">This Notice evidences the award of stock units (each, a &#147;<B><I>Stock Unit</I></B>,&#148; and collectively, the &#147;<B><I>Stock
Units</I></B>&#148;) of Human Genome Sciences, Inc., a Delaware corporation (the &#147;<B><I>Company</I></B>&#148;), that have been
granted to you pursuant to the Human Genome Sciences, Inc. Non-Employee Director Equity
Compensation Plan (the &#147;<B><I>Plan</I></B>&#148;) and conditioned upon your agreement to the terms of the
&#091;attached&#093;&#091;Company&#146;s standard form of&#093; Stock Units Agreement (the &#147;<B><I>Agreement</I></B>&#148;)&#091;.&#093;&#091;, a copy of which
was provided to you previously. You may obtain an additional copy of the Agreement by contacting
the Company&#146;s Secretary at 14200 Shady Grove Road, Rockville, Maryland 20850-3338 (Telephone:
301-251-6039).&#093; This Notice constitutes part of and is subject to the terms and provisions of the
Agreement and the Plan, which are incorporated by reference herein. Each Stock Unit represents the
Company&#146;s commitment to issue one share of the Company&#146;s common stock at a future date, subject to
the terms of the Agreement and the Plan.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><U>Grant Date</U>: <U>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</U>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt"><U>Number of Stock Units</U>: <U>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</U>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt"><U>Vesting Schedule</U>: All of the Stock Units are vested and nonforfeitable as of the Grant
Date.
</DIV>

<DIV align="center">
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    <TD valign="top" style="border-top: 1px solid #000000"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
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    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Human Genome Sciences, Inc.
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Date</TD>
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<DIV align="Center" style="font-size: 10pt; margin-top: 6pt"><DIV style="width: 100%; border-bottom: 3px double #000000; font-size: 1px">&nbsp;</DIV>

</DIV>
<DIV align="left" style="font-size: 10pt; margin-top: 6pt">I acknowledge that I have carefully read the Agreement and the prospectus for the Plan. I agree to
be bound by all of the provisions set forth in those documents. I also consent to electronic
delivery of all notices or other information with respect to the Stock Units or the Company.
</DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
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    <TD valign="top" style="border-top: 1px solid #000000"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top" style="border-top: 1px solid #000000">&nbsp;</TD>
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<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Signature of Grantee
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Date</TD>
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<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><FONT style="font-variant: SMALL-CAPS"><B>Human Genome Sciences, Inc.</B></FONT>
</DIV>


<DIV align="Center" style="font-size: 10pt; margin-top: 6pt"><FONT style="font-variant: SMALL-CAPS"><B>Stock Units Agreement</B></FONT><BR>
<FONT style="font-variant: SMALL-CAPS"><B>under the</B></FONT><BR>
<FONT style="font-variant: SMALL-CAPS"><B>Non-Employee Director Equity Compensation Plan</B></FONT>

</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.&nbsp;<U>Terminology</U>. Unless otherwise provided in this Agreement, capitalized terms used
herein are defined in the Glossary at the end of this Agreement.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.&nbsp;<U>Vesting</U>. All of the Stock Units are vested and nonforfeitable as of the Grant
Date.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.&nbsp;<U>Restrictions on Transfer</U>. Neither this Agreement nor any of the Stock Units may be
assigned, transferred, pledged, hypothecated or disposed of in any way, whether by operation of law
or otherwise, and the Stock Units shall not be subject to execution, attachment or similar process
or in any other manner be made subject to a hedge transaction or puts and calls. All rights with
respect to this Agreement and the Stock Units shall be exercisable during your lifetime only by you
or your guardian or legal representative.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.&nbsp;<U>Dividend Equivalent Payments</U>. On each dividend payment date for each cash dividend
paid on the outstanding Common Stock, the Company will credit a bookkeeping account in your name
with dividend equivalents in the form of additional Stock Units, equal to the quotient, rounded to
three decimal places, determined by dividing (a)&nbsp;the product of (i)&nbsp;the amount of cash dividend per
share of Common Stock multiplied by (ii)&nbsp;the number of whole Stock Units credited to your account
as of the record date, by (b)&nbsp;the Fair Market Value of a share of Common Stock on the dividend
payment date. If your Stock Units have been settled after the record date but prior to the
dividend payment date, any Stock Units that would be credited pursuant to the preceding sentence
shall be settled on or as soon as practicable after the dividend payment date.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.&nbsp;<U>Settlement of Stock Units</U>. Except as provided below with respect to a Change in
Control, your Stock Units will be settled automatically, via the issuance of Common Stock as
described herein, upon your Termination Date. You are not required to make any monetary payment as
a condition to settlement of the Stock Units. The Company will issue to you, in settlement of your
Stock Units, the number of whole shares of Common Stock that equals the number of whole Stock
Units, and the Stock Units will cease to be outstanding upon your receipt of such settlement
payment. Upon issuance of such shares, the Company will deliver such shares on your behalf
electronically to the Company&#146;s designated stock plan administrator or such other broker as the
Company may choose at its sole discretion, within reason. Fractional Stock Units will be settled
in cash. In the event of your death, settlement of your Stock Units will be made in the same
manner on behalf of your estate. Notwithstanding the foregoing, in the event of any transaction
resulting in a Change in Control of the Company, your Stock Units will be settled at the time of
the Change in Control, or as soon as practicable thereafter, but in no event later than the close
of the calendar year in which the Change in Control occurs.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.&nbsp;<U>Capital Adjustments</U>. If the outstanding shares of Common Stock are increased or
decreased or changed into or exchanged for a different number or kind of security by reason of any
recapitalization, reclassification, stock split, reverse stock split, combination of shares,
exchange of shares, stock dividend, or other distribution payable in capital stock, or other
increase or decrease in the outstanding shares of Common Stock is effected without receipt of
consideration by the Company occurring after the Grant Date and before your Stock Units have been
settled, a proportionate and appropriate adjustment will be made in the number of Stock Units
credited to your account, so that your proportionate interest immediately following such event
shall, to the extent practicable, be the same as immediately before such event. Adjustments under
this paragraph will be made by the Administrator, whose determination as to what adjustments, if
any, will be made and the extent thereof will be final, binding and conclusive.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.&nbsp;<U>Non-Guarantee of Directorship</U>. Nothing in the Plan or in this Agreement, nor any
action taken pursuant to the Plan, shall confer any right on you to continue in the service of the
Company as a member of the Board of Directors or in any other capacity for any period of time or at
a particular retainer
</DIV>

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<DIV align="left" style="font-size: 10pt; margin-top: 6pt">or other rate of compensation, or as limiting, interfering with or otherwise affecting the
provisions of the Company&#146;s charter, bylaws or the Delaware General Corporation Law relating to the
removal of Directors.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.&nbsp;<U>Rights as Stockholder</U>. Except as otherwise provided in this Agreement with respect
to dividend equivalent payments, neither you nor any other person claiming through you shall have
any rights with respect to any shares of Common Stock subject to the Stock Units, including without
limitation, any voting rights, unless and until such shares are duly issued and delivered to you.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9.&nbsp;<U>The Company&#146;s Rights</U>. The existence of the Stock Units shall not affect in any way
the right or power of the Company or its stockholders to make or authorize any or all adjustments,
recapitalizations, reorganizations or other changes in the Company&#146;s capital structure or its
business, or any merger or consolidation of the Company, or any issue of bonds, debentures,
preferred or other stocks with preference ahead of or convertible into, or otherwise affecting the
Common Stock or the rights thereof, or the dissolution or liquidation of the Company, or any sale
or transfer of all or any part of the Company&#146;s assets or business, or any other corporate act or
proceeding, whether of a similar character or otherwise.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10.&nbsp;<U>Restrictions on Issuance of Shares</U>. The issuance of shares of Common Stock upon
settlement of the Stock Units shall be subject to and in compliance with all applicable
requirements of federal, state or foreign law with respect to such securities. No shares of Common
Stock may be issued hereunder if the issuance of such shares would constitute a violation of any
applicable federal, state or foreign securities laws or other law or regulations or the
requirements of any stock exchange or market system upon which the Common Stock may then be listed.
The inability of the Company to obtain from any regulatory body having jurisdiction the authority,
if any, deemed by the Company&#146;s legal counsel to be necessary to the lawful issuance of any shares
subject to the Stock Units shall relieve the Company of any liability in respect of the failure to
issue such shares as to which such requisite authority shall not have been obtained. As a
condition to the settlement of the Stock Units, the Company may require you to satisfy any
qualifications that may be necessary or appropriate to evidence compliance with any applicable law
or regulation and to make any representation or warranty with respect thereto as may be requested
by the Company.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11.&nbsp;<U>Notices</U>. All notices and other communications made or given pursuant to this
Agreement shall be in writing and shall be sufficiently made or given if hand delivered or mailed
by certified mail, addressed to you at the address contained in the records of the Company, or
addressed to the Administrator, care of the Company for the attention of its Corporate Secretary at
its principal executive office or, if the receiving party consents in advance, transmitted and
received via telecopy or via such other electronic transmission mechanism as may be available to
the parties.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12.&nbsp;<U>Entire Agreement</U>. This Agreement, together with the relevant Notice, contains the
entire agreement between the parties with respect to the Stock Units granted hereunder. Any oral
or written agreements, representations, warranties, written inducements or other communications
made prior to the execution of this Agreement with respect to the Stock Units granted hereunder
shall be void and ineffective for all purposes.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13.&nbsp;<U>Amendment</U>. This Agreement may be amended from time to time by the Administrator
in its discretion; <U>provided</U>, <U>however</U>, that this Agreement may not be modified in a
manner that would have a materially adverse effect on the Stock Units as determined in the
discretion of the Administrator, except as provided in the Plan or in a written document signed by
each of the parties hereto.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14.&nbsp;<U>409A Compliance</U>.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;This Agreement and the Stock Units granted hereunder are intended to comply with, or
otherwise be exempt from, Section&nbsp;409A of the Code and any regulations and Treasury guidance
promulgated thereunder.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;The Company and grantee agree that they will execute any and all amendments to this
Agreement or with respect to the Stock Units as they mutually agree in good faith may be necessary
to ensure compliance with the provisions of Section&nbsp;409A of the Code.
</DIV>


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<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c)&nbsp;The preceding provisions, however, shall not be construed as a guarantee by the Company
of any particular tax effect to you under this Agreement or with respect to the Stock Units. The
Company shall not be liable to you for any payment made under this Agreement or with respect to the
Stock Units, at your direction or with your consent, which is determined to result in an additional
tax, penalty, or interest under Section&nbsp;409A of the Code, nor for reporting in good faith any
payment made under this Agreement or with respect to the Stock Units as an amount includible in
gross income under Section&nbsp;409A of the Code.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d)&nbsp;If you are a &#147;specified employee&#148; (as defined under Section&nbsp;409A of the Code and
determined in good faith by the Compensation Committee) when you attain your Termination Date and
your Stock Units are to be settled on account of the occurrence of such Termination Date,
settlement of your Stock Units will be made within 15&nbsp;days after the end of the six-month period
beginning on your Termination Date or, if earlier, within 15&nbsp;days after the appointment of the
personal representative or executor of your estate following your death.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15.&nbsp;<U>Conformity with Plan</U>. This Agreement is intended to conform in all respects with,
and is subject to all applicable provisions of, the Plan. Inconsistencies between this Agreement
and the Plan shall be resolved in accordance with the terms of the Plan. In the event of any
ambiguity in this Agreement or any matters as to which this Agreement is silent, the Plan shall
govern. A copy of the Plan is available upon request to the Administrator.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16.&nbsp;<U>No Funding</U>. This Agreement constitutes an unfunded and unsecured promise by the
Company to issue shares of Common Stock in the future in accordance with its terms. You have the
status of a general unsecured creditor of the Company as a result of receiving the grant of Stock
Units. Any cash payment due under this Agreement with respect to dividend equivalent payments
under Section&nbsp;4 hereof will be paid from the general assets of the Company and nothing in this
Agreement will be construed to give you or any other person rights to any specific assets of the
Company.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17.&nbsp;<U>Governing Law</U>. The validity, construction and effect of this Agreement, and of any
determinations or decisions made by the Administrator relating to this Agreement, and the rights of
any and all persons having or claiming to have any interest under this Agreement, shall be
determined exclusively in accordance with the laws of the State of Delaware, without regard to its
provisions concerning the applicability of laws of other jurisdictions. Any suit with respect
hereto will be brought in the federal or state courts in the district which includes the city or
town in which the Company&#146;s principal executive office is located, and you hereby agree and submit
to the personal jurisdiction and venue thereof.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18.&nbsp;<U>Headings</U>. The headings in this Agreement are for reference purposes only and
shall not affect the meaning or interpretation of this Agreement.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19.&nbsp;<U>Electronic Delivery of Documents</U>. By your signing the Notice, you (i)&nbsp;consent to
the electronic delivery of this Agreement, all information with respect to the Plan and the Stock
Units and any reports of the Company provided generally to the Company&#146;s stockholders; (ii)
acknowledge that you may receive from the Company a paper copy of any documents delivered
electronically at no cost to you by contacting the Company by telephone or in writing; (iii)
further acknowledge that you may revoke your consent to the electronic delivery of documents at any
time by notifying the Company of such revoked consent by telephone, postal service or electronic
mail; and (iv)&nbsp;further acknowledge that you understand that you are not required to consent to
electronic delivery of documents.
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt">{<I>Glossary begins on next page</I>}
</DIV>


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<DIV align="center" style="font-size: 10pt; margin-top: 18pt">GLOSSARY
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) &#147;<B><I>Administrator</I></B>&#148; means the Board of Directors of Human Genome Sciences, Inc. or such
committee or committees appointed by the Board to administer the Plan.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) &#147;<B><I>Affiliate</I></B>&#148; means any entity, whether now or hereafter existing, which controls, is
controlled by, or is under common control with Human Genome Sciences, Inc. (including but not
limited to joint ventures, limited liability companies and partnerships). For this purpose,
&#147;control&#148; means ownership of 50% or more of the total combined voting power or value of all classes
of stock or interests of the entity.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) &#147;<B><I>Agreement</I></B>&#148; means this document, as amended from time to time, together with the Plan
which is incorporated herein by reference.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d) &#147;<B><I>Change in Control</I></B>&#148; means the earliest to occur of any of the following events, construed
in accordance with Section&nbsp;409A of the Code:
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i)&nbsp;Any one person or more than one person acting as a group acquires, or has acquired during
the 12-month period ending on the date of the most recent acquisition by such person or group,
beneficial ownership of more than 50% of the total voting power of the Company&#146;s then outstanding
voting securities;
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii)&nbsp;A majority of the members of the Company&#146;s Board of Directors is replaced during any
12-month period by directors whose appointment or election is not endorsed or approved by a
majority of the members of the Board who were members of the Board prior to the initiation of the
replacement; or
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii)&nbsp;Any one person or more than one person acting as a group acquires, or has acquired
during the 12-month period ending on the date of the most recent acquisition by such person or
group, assets of the Company that have a total gross fair market value of 50% or more of the total
gross fair market value of all of the assets of the Company immediately prior to the initiation of
the acquisition.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(e) &#147;<B>Code</B>&#148; means the Internal Revenue Code of 1986, as amended, and the Treasury regulations
and other guidance promulgated thereunder.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(f) &#147;<B>Common Stock</B>&#148; means the common stock, $0.01 par value per share, of Human Genome
Sciences, Inc.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(g) &#147;<B><I>Company</I></B>&#148; means Human Genome Sciences, Inc. and its Affiliates, except where the context
otherwise requires. For purposes of determining whether a Change in Control has occurred, Company
shall mean only Human Genome Sciences, Inc.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(h) &#147;<B><I>Fair Market Value</I></B>&#148; has the meaning set forth in the Plan. The Plan generally defines
Fair Market Value to mean the closing price on the relevant date as quoted on the principal
securities exchange on which shares of Common Stock are then listed or admitted to trading. If no
public trading of the Common Stock occurs on the relevant date, the Fair Market Value will be
determined as of the most recent preceding date on which trading of the Common Stock does occur.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) &#147;<B><I>Grant Date</I></B>&#148; means the effective date of a grant of Stock Units made to you as set forth
in the relevant Notice.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(j) &#147;<B><I>Notice</I></B>&#148; means the statement, letter or other written notification provided to you by the
Company setting forth the terms of a grant of Stock Units made to you.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(k) &#147;<B><I>Plan</I></B>&#148; means the Human Genome Sciences, Inc. Non-Employee Director Equity Compensation
Plan, as amended from time to time.
</DIV>


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<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(l) &#147;<B><I>Stock Unit</I></B>&#148; means the Company&#146;s commitment to issue one share of Common Stock at a future
date, subject to the terms of the Agreement and the Plan.
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<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(m) &#147;<B><I>Termination Date</I></B>&#148; means the date on which you cease to serve as a member of the Board of
Directors and have otherwise incurred a &#147;separation from service&#148; within the meaning of Section
409A of the Code.
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<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(n) &#147;<B><I>You</I></B>&#148; or &#147;<B><I>Your</I></B>&#148; means the recipient of the Stock Units as reflected on the
applicable
Notice. Whenever the word &#147;you&#148; or &#147;your&#148; is used in any provision of this Agreement under
circumstances where the provision should logically be construed, as determined by the
Administrator, to apply to the estate, personal representative, or beneficiary to whom the Stock
Units may be transferred by will or by the laws of descent and distribution, the words &#147;you&#148; and
&#147;your&#148; shall be deemed to include such person.
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<DIV align="center" style="font-size: 10pt; margin-top: 18pt">{<I>End of Agreement</I>}
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