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PepGen Inc. Investors: Please contact the Portnoy Law Firm to recover your losses. August 8, 2025 Deadline to file Lead Plaintiff Motion.

Key Takeaway: PepGen Inc. is facing a class action lawsuit following allegations of false statements related to its lead product, PGN-EDO51, during the class period from March 7, 2024, to March 3, 2025. The lawsuit claims misrepresentation regarding the safety and efficacy of PGN-EDO51, which targets Duchenne muscular dystrophy. Notably, PepGen's stock experienced significant declines in response to news of clinical holds and disappointing trial results. Investors have until August 8, 2025, to file a lead plaintiff motion.

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CONCERNS & RISKS

  • Class action lawsuit alleges false and misleading statements by the company.
  • Concerns over the safety and effectiveness of PGN-EDO51 were not disclosed.
  • The FDA placed a clinical hold on PepGen's CONNECT2 study due to patient risk.
  • Significant stock price declines followed negative news regarding clinical trials.

Full Press Release Details

Investors can contact the law firm at no cost to learn more about recovering their losses
LOS ANGELES, Aug. 07, 2025 (GLOBE NEWSWIRE) -- The Portnoy Law Firm advises PepGen Inc. ("PepGen" or the "Company") (NASDAQ: PEPG) investors of a class action representing investors that bought securities between March 7, 2024 and March 3, 2025, inclusive (the "Class Period"). PepGen investors have until August 8, 2025 to file a lead plaintiff motion.
Investors are encouraged to contact attorney Lesley F. Portnoy, by phone 310-692-8883 or email: lesley@portnoylaw.com, to discuss their legal rights, or click here to join the case. The Portnoy Law Firm can provide a complimentary case evaluation and discuss investors’ options for pursuing claims to recover their losses.
CASE ALLEGATIONS: PepGen is a clinical-stage biotechnology company focused on developing oligonucleotide therapeutics to treat severe neuromuscular and neurologic diseases. Its lead product candidate, PGN-EDO51, is a proprietary enhanced delivery oligonucleotide (“EDO”) peptide targeting Duchenne muscular dystrophy (“DMD”).
According to the class action lawsuit, throughout the Class Period, defendants made false and/or misleading statements and/or failed to disclose material facts, including that:
(i) PGN-EDO51 was less safe and effective than represented;
(ii) the CONNECT2 clinical trial was unsafe or otherwise inadequate for securing U.S. Food and Drug Administration (“FDA”) approval; and
(iii) as a result, PepGen was likely to halt the CONNECT2 trial and had overstated PGN-EDO51’s clinical, regulatory, and commercial prospects.
The Complaint further alleges that on July 30, 2024, PepGen announced “positive clinical data” from the first dose cohort (5 mg/kg) of PGN-EDO51 in its ongoing CONNECT1 study, reporting a mean absolute dystrophin level of 0.61% of normal and a 0.26% change from baseline. However, a Stifel analyst noted that “the magnitude of dystrophin increase was below what [PepGen] anticipated,” calling the results disappointing. Following this news, PepGen’s stock price declined nearly 33%.
On December 16, 2024, PepGen disclosed it had received a clinical hold notice from the FDA regarding its Investigational New Drug (IND) application for the CONNECT2 study in DMD patients, citing concerns over patient risk or other deficiencies in the trial. The stock declined further in response.
Then, on January 29, 2025, PepGen announced that dosing in the CONNECT1 study was paused for a participant in the 10 mg/kg cohort due to reduced kidney function, and that Health Canada had requested additional safety data before allowing further dose escalation. Additionally, PepGen stated it was working with the FDA to address questions about dosing plans for the CONNECT2 study. This news prompted another stock decline of approximately 22%.
Finally, on March 4, 2025, PepGen announced a voluntary temporary pause of the CONNECT2 study to review data from the 10 mg/kg cohort in CONNECT1. On this news, PepGen’s stock fell nearly 19%, according to the Complaint.
Please visit our website to review more information and submit your transaction information.
The Portnoy Law Firm represents investors in pursuing claims against caused by corporate wrongdoing. The Firm’s founding partner has recovered over $5.5 billion for aggrieved investors. Attorney advertising. Prior results do not guarantee similar outcomes.
Lesley F. Portnoy, Esq.
Admitted CA and NY Bar
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Frequently Asked Questions

What is the class action against PepGen Inc. about?

The class action alleges that PepGen made false statements about the safety and effectiveness of its drug PGN-EDO51.

What deadlines should PepGen investors be aware of?

PepGen investors have until August 8, 2025, to file a lead plaintiff motion.

How can investors contact the Portnoy Law Firm?

Investors can reach attorney Lesley F. Portnoy at 310-692-8883 or via email.

What financial recovery options are available to investors?

The Portnoy Law Firm offers complimentary case evaluations to discuss recovery options.

What triggered PepGen's stock price declines?

Stock declines followed news of unfavorable trial results and regulatory challenges.

Last updated: Aug 7, 2025