1. ORGANIZATION AND BUSINESS

9 Months Ended

Jan. 31, 2013

Organization And Business

1. ORGANIZATION AND BUSINESS

Peregrine Pharmaceuticals, Inc. (“Peregrine” or “Company”) is a biopharmaceutical company developing first-in-class monoclonal antibodies focused on the treatment and diagnosis of cancer. We are advancing two oncology programs with our lead product candidates, bavituximab and Cotara, for the treatment of various cancers. In addition, we are advancing our lead molecular imaging agent, 124I-PGN650, in an exploratory clinical trial for the imaging of multiple solid tumor types. Peregrine also has in-house manufacturing capabilities through its wholly-owned subsidiary Avid Bioservices, Inc. (“Avid”), a contract manufacturing organization that provides development and biomanufacturing services for Peregrine and its third-party clients.