Vancouver, British Columbia, Canada
July 10, 2014

Tekmira Pharmaceuticals Corporation (Nasdaq:TKMR) (TSX:TKM), a leading developer of RNA interference (RNAi) therapeutics, announced today that it has received a $1.5 million milestone payment from Monsanto following completion of specified program developments. The development milestone is part of the research program under the Option Agreement Tekmira signed with the agriculture company, which we announced on January 13, 2014. The Option Agreement relates to Tekmira's proprietary delivery technology and intellectual property for use in agricultural applications. The potential value of the transaction could reach up to $86.2 million, following the successful completion of all program milestones.

Tekmira Pharmaceuticals Corporation is a biopharmaceutical company focused on advancing novel RNAi therapeutics and providing its leading lipid nanoparticle (LNP) delivery technology to pharmaceutical partners. Tekmira has been working in the field of nucleic acid delivery for over a decade, and has broad intellectual property covering its delivery technology. Further information about Tekmira can be found at www.tekmira.com. Tekmira is based in Vancouver, B.C. Canada.

Website: http://www.monsanto.com

Published: July 10, 2014