PTC Therapeutics, Inc. (NASDAQ: PTCT) announced today that the company will host a webcast conference call to report its first quarter 2026 financial results and provide an update on the company's business and outlook on Thursday, May 7, 2026, at 4:30 p.m. ET.

To access the live webcast, please visit the "Events & Presentations" page within the Investors section of the PTC website. A replay of the webcast will be available on the PTC website for 30 days following the event. To participate via phone, please register in advance here to receive dial-in details.

ABOUT PTC THERAPEUTICS, INC. PTC is a global biopharmaceutical company dedicated to the discovery, development and commercialization of clinically differentiated medicines for children and adults living with rare disorders. PTC is advancing a robust and diversified pipeline of transformative medicines as part of its mission to provide access to best-in-class treatments for patients with unmet medical needs. The company's strategy is to leverage its scientific expertise and global commercial infrastructure to optimize value for patients and other stakeholders. To learn more about PTC, please visit www.ptcbio.com and follow us on LinkedIn, X, Instagram and Facebook.

For more information, please contact:

Investors: Ellen Cavaleri+1 (615) 618-8228ecavaleri@ptcbio.com

Media: Jeanine Clemente+1 (908) 912-9406jclemente@ptcbio.com

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SOURCE PTC Therapeutics, Inc.

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