SAN FRANCISCO--(BUSINESS WIRE)--Presidio Pharmaceuticals, Inc. announced today that Dr. Omar K. Haffar, Founder, President and Chief Executive Officer, will present an update on Presidio’s drug development activities at the C21 BioVentures Conference on Wednesday, May 26, 2010 at 4:30PM at the Meritage Resort in Napa, California. The 12th Annual C21 BioVentures Conference is being held May 25-27, 2010.