Release Details

PTC THERAPEUTICS TO PARTICIPATE AT UPCOMING INVESTOR CONFERENCES

SOUTH PLAINFIELD, NJ – August 20, 2014 –PTC Therapeutics, Inc. (NASDAQ: PTCT) today announced that it will participate at two upcoming investor conferences:

•  FBR 1st Annual Healthcare Conference at the Four Seasons Hotel in Boston on Wednesday, September 3rd
• Citi's 9th Annual Biotech Conference at The Mandarin Oriental Boston on Thursday, September 4th

In addition, management will present a company update at the Bank of America Merrill Lynch Global Healthcare Conference at the Bank of America Merrill Lynch Financial Centre on September 17th at 4:10 pm in London. The presentation will be webcast live on the Events and Presentations page under the investor relations section of PTC Therapeutics' website at www.ptcbio.com. The presentation will be archived for 2 weeks following the presentation. It is recommended that users connect to PTC's website several minutes prior to the start of the webcast to ensure a timely connection. PTC's current Investor Presentation slide deck is available at the same website location.

ABOUT PTC THERAPEUTICS, INC.
PTC is a biopharmaceutical company focused on the discovery and development of orally administered, proprietary small molecule drugs that target post-transcriptional control processes. Post-transcriptional control processes regulate the rate and timing of protein production and are essential to proper cellular function. PTC's internally discovered pipeline addresses multiple therapeutic areas, including rare disorders, oncology and infectious diseases. PTC has developed proprietary technologies that it applies in its drug discovery activities and in collaborations with leading biopharmaceutical companies. For more information on the company, please visit our website www.ptcbio.com

FOR MORE INFORMATION PLEASE CONTACT

Jane Baj

+1 (908) 912-9167

jbaj@ptcbio.com