Five Prime Therapeutics to Host Conference Call on Worldwide License and Collaboration Agreement With Bristol-Myers Squibb for CSF1R Antibody Program

Five Prime Therapeutics, Inc.

will host a conference call and live audio webcast today, October 15 at 8:30 a.m. (ET)/5:30 a.m. (PT) to discuss the new worldwide license and collaboration agreement signed with Bristol-Myers Squibb for FPA008, Five Prime's CSF1R antibody program. The live audio webcast may be accessed through the "Events & Presentations" page in the "Investors" section of the company's website at www.fiveprime.com. Alternatively, participants may dial (877) 878-2269 (domestic) or (253) 237-1188 (international) and refer to conference ID 60918903. The archived conference call will be available on Five Prime's website beginning approximately two hours after the event and will be archived and available for replay for at least 30 days after the event. About Five Prime Five Prime Therapeutics, Inc. discovers and develops innovative therapeutics to improve the lives of patients with serious diseases. Five Prime's comprehensive discovery platform, which encompasses virtually every medically relevant extracellular protein, positions it to explore pathways in cancer, inflammation and their intersection in immuno-oncology, an area with significant therapeutic potential and a growing focus