exhibit 10. 68 confidential treatment has been requested for portions of this exhibit. the copy filed herewith omits the information subject to the confidentiality request. omissions are designated as [ * * * ]. a complete version of this exhibit has been filed separately with the securities and exchange commission. amendment of solicitation / modification of contract 1. contract id code page of pages v 1 2 2. amendment / modification no 3. effective date 4. requisition / purchase req. no. 5. project no. ( if applicable ) p00026 25 - jul - 2014 see schedule 6. issued by code w911qy 7. administered by ( if other than item 6 ) code scn01a w6qk acc - apg natick contracting division bldg 1 kansas street natick ma # # # - # # # - # # # # dcma americas ( canada ) 275 bank st. suite 200 ottawa, ont. cnk2p - 2l6 8. name and address of contractor ( no., street, county, state and zip code ) tekmira pharmaceuticals corporation 9a. amendment of solicitation no. 8900 glenlyon pky suite 100 burnaby v5j 5j8 9b. dated ( see item 11 ) x 10a. mod. of contract / order no. w9113m - 10 - c - 0057 x 10b. dated ( see item 13 ) code l8144 facility code 14 - jul - 2010 11. this item only applies to amendments of solicitations o the above numbered solicitation is amended as set forth in item 14. the hour and date specified for receipt of offer o is extended o is not extended. offer must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended by one of the following methods : ( a ) by completing items 8 and 15, and returning _ _ _ _ _ copies of the amendment ; ( b ) by acknowledging receipt of this amendment on each copy of the offer submitted ; or ( c ) by separate letter or telegram which includes a reference to the solicitation and amendment numbers. failure of your acknowledgment to be received at the place designated for the receipt of offers prior to the hour and date specified may result in rejection of your offer. if by virtue of this amendment you desire to change an offer