Why Is PTC Therapeutics, Inc. (PTCT) Under Investigation?

Bronstein, Gewirtz & Grossman, LLC is investigating potential claims on behalf of purchasers of PTC Therapeutics, Inc. (“PTC” or “the Company”) (NASDAQ: PTCT). Investors who purchased PTC securities are encouraged to obtain additional information and assist the investigation.

The investigation concerns whether PTC has violated federal securities laws.

What Potential Securities Violations Is BG&G Investigating?

On May 5, 2025, PTC issued a press release “announc[ing] results from the Phase 2 PIVOT-HD study of PTC518 (votoplam) in Stage 2 and Stage 3 Huntington’s disease (HD) patients.” Although “[t]he study met its primary endpoint of reduction in blood Huntingtin (HTT) protein levels (p<0.0001) at Week 12 and favorable safety and tolerability”, analysts who reviewed the data anticipated that the Company would likely need to conduct a Phase 3 study to better establish whether the treatment is actually slowing HD. On this news, PTC’s stock price fell $9.30 per share, or 18.62%, to close at $40.65 per share on May 5, 2025.

What’s Next?

If you are aware of any facts relating to this investigation or purchased PTC securities, you can assist this investigation. You can also contact Peretz Bronstein or his client relations manager, Nathan Miller, of Bronstein, Gewirtz & Grossman, LLC: 332-239-2660