News Release

Tekmira Pharmaceuticals Conference Call Advisory - First Quarter 2009 Operating Results and Corporate Update

For immediate release: May 11, 2009

VANCOUVER, BC – Tekmira Pharmaceuticals Corporation (TSX: TKM) announced today that it will hold a conference call and webcast on Wednesday May 13, 2009 at 9:00 am Pacific Time (12:00 noon Eastern Time) to discuss first quarter 2009 operating results and to provide a corporate update including discussion of the Roche product development agreement announced earlier today.  

About the Conference Call
To participate in the conference call, please dial 416-340-2216 or 1-866-226-1792.  The call will be available for replay until May 27, 2009 by calling 416-695-5800 or 1-800-408-3053 and entering the code 6661131.  

The live or archived webcast can also be accessed through the Company’s website at www.tekmirapharm.com.  

About Tekmira
Tekmira Pharmaceuticals Corporation is a biopharmaceutical company focused on advancing novel RNAi therapeutics and providing its leading lipid nanoparticle delivery technology to pharmaceutical partners.  Further information about Tekmira can be found at www.tekmirapharm.com.  Tekmira is based in Vancouver, B.C.  

Contact Information for Tekmira Pharmaceuticals Corporation  

Investors
Adam Peeler
The Equicom Group
Phone: 416-815-0700 x 225
Email: apeeler@equicomgroup.com  

Ian Mortimer
Executive Vice President and Chief Financial Officer
Phone: 604-419-3200  

Media
David Ryan
Longview Communications Inc. 
Phone: 604-694-6031
Email: dryan@longviewcomms.ca