FivePrime

Five Prime Therapeutics, Inc. Adds Key Leaders to Its Management Team

SAN FRANCISCO--(Business Wire)--

Five Prime Therapeutics, Inc. today announced the appointment of three
executives to its management team.Aron Knickerbocker joins as vice president
business development, Marc Belsky as vice president finance and Lauretta Cesario
as vice president human resources.

'I am delighted to work with Aron, Marc and Lauretta at FivePrime,' remarked
Julia P. Gregory, president and chief executive officer. 'It is a great tribute
to our world class scientific foundation and business strategy that we attracted
these high performance individuals to our organization. I look forward to their
many contributions as we advance our company in development.'

Aron Knickerbocker brings substantial experience in business development,
licensing and corporate development. Mr. Knickerbocker joins FivePrime from
Genentech, Inc. where he most recently served as senior director, business
development, leading Genentech`s oncology business development team and
responsible for evaluating and negotiating strategic alliances. He has worked
previously with Alza Corporation, where he managed licensing transactions as
their director of commercial development, and held sales, market research,
marketing, and corporate development positions at Amgen, Inc. He began his
career in the biopharmaceutical industry in research as a scientist at
Bristol-Myers Squibb. Aron received his B.A. degree in biology from Washington
University in St. Louis, and his M.B.A. degree from the University of Michigan.
Mr. Knickerbocker will lead FivePrime`s business development and licensing
activities to accelerate advancement of its drug pipeline and continue to mine
the company`s robust discovery platform for innovative biologics.

Marc Belsky brings extensive experience in finance, accounting, treasury and
taxation. He joins FivePrime after serving as vice president and chief
accounting officer for Cell Genesys, Inc. Previously, he was the chief financial
officer at Active Aero Group and DataWave Systems, Inc. and held senior finance
and banking positions at Michigan National Corporation. Mr. Belsky started his
career as an auditor with Coopers & Lybrand, is a certified public accountant, a
certified treasury professional, and received an M.B.A. from the University of
Michigan and a B.S. in accounting from Wayne State University. At FivePrime, he
will lead the company`s finance and accounting group.

Lauretta Cesario brings significant experience in human resources, recently as
vice president human resources with Affymetrix, Inc. where she transformed the
HR function into a functionally differentiated team supported by advanced
technologies. Prior to Affymetrix, she was formerly with Scios, Inc, Silicon
Graphics, Inc., National Semiconductor Corporation and Syntex Corporation. Ms.
Cesario received her B.S. in psychology from Loyola University. She will head
FivePrime`s human resources group and provide strategic organizational
initiatives within its innovative discovery and development environment.

About Five Prime Therapeutics, Inc.

Five Prime Therapeutics, Inc. is a clinical stage, privately-held company
discovering and developing innovative protein and antibody therapeutics. Using
its world-class biologics discovery platform, FivePrime is building a strong
product pipeline in oncology, immunology and metabolic diseases. It has
engineered a unique suite of technologies to comprehensively mine the entire
extracellular human proteome - the complete collection of secreted proteins and
receptors - to discover its therapeutic protein drugs and antibody targets.
FivePrime is currently in Phase I with FP-1039 for solid tumors. Pharmaceutical
partners include Johnson & Johnson`s Centocor division and Pfizer, Inc. For more
information, visit www.fiveprime.com.

Five Prime Therapeutics, Inc.
Jennifer Pratt Mead, 415-365-5663
Jennifer.pratt@fiveprime.com