Achillion to Present at Three Upcoming Investor Conferences

Achillion Pharmaceuticals, Inc.

 (Nasdaq:ACHN) announced today that Milind Deshpande, Ph.D., President and Chief Executive Officer of Achillion, will present a corporate overview at three upcoming investor conferences:

• Jefferies 2016 Healthcare Conference on Tuesday, June 7, 2016 at 4:30 p.m. ET at the Grand Hyatt Hotel in New York City, NY;

• William Blair & Company 2016 Growth Stock Conference on Tuesday, June 14, 2016 at 7:30 a.m. CT (8:30 a.m. ET) at the Four Seasons Hotel in Chicago, IL; and

• JMP Securities Life Sciences Conference on Wednesday, June 22, 2016 at 9:00 a.m. ET at The St. Regis New York Hotel in New York City, NY.

The live audio and subsequent archived webcasts of the Company's presentations will be accessible from the Company's investor relations website, http://ir.achillion.com. The audio recording will be archived for 30 days following the live presentation. Please connect to Achillion's website several minutes prior to the start of the presentation to ensure adequate time for any software downloads that may be necessary.

About Achillion Pharmaceuticals

Achillion Pharmaceuticals, Inc. (NASDAQ:ACHN) is a science-driven, patient-focused company seeking to leverage its strengths across the continuum from discovery to commercialization in its goal of providing better treatments for people with serious diseases. The company employs a highly-disciplined discovery and development approach that has allowed it to pursue best-in-class oral antiviral therapy for chronic hepatitis C (HCV) and build a platform of potent and specific complement inhibitors. Achillion is rapidly advancing its efforts to become a fully-integrated pharmaceutical company with a goal of bringing life-saving medicines to patients with rare diseases. More information is available at http://www.achillion.com.

Investors:
Glenn Schulman
Achillion Pharmaceuticals, Inc.
Tel. [phone]
[e-mail]

Media:
Liz Power
Achillion Pharmaceuticals, Inc.
Tel: [phone]
[e-mail]