Infinity to Participate in Three Conferences in September

Infinity Pharmaceuticals, Inc. (NASDAQ: INFI) will be participating in three conferences during September. On September 3, 2013, Infinity will participate in meetings at Citi’s 8^th Annual Biotech Conference in Boston, MA. Additionally, Infinity will provide an overview of its business at the following conferences:

• Morgan Stanley Global Healthcare Conference, New York City, September 9, 2013, 10:35 a.m. ET
• Stifel Healthcare Conference 2013, Boston, September 11, 2013, 9:45 a.m. ET

Live audio webcasts of Infinity’s presentations at the Morgan Stanley and Stifel healthcare conferences will be accessible from the “Investors/Media” section of the company's website, www.infi.com, and replays will be available for 30 days following each event.

About Infinity Pharmaceuticals, Inc.

Infinity is an innovative biopharmaceutical company dedicated to discovering, developing and delivering best-in-class medicines to people with difficult-to-treat diseases. Infinity combines proven scientific expertise with a passion for developing novel small molecule drugs that target emerging disease pathways. Infinity’s programs focused on the inhibition of phosphoinositide-3-kinase and heat shock protein 90 are evidence of its innovative approach to drug discovery and development. For more information on Infinity, please refer to the company’s website at www.infi.com.