INVESTOR ALERT: Pomerantz Law Firm Investigates Claims On Behalf Of Investors Of Mereo Biopharma Group Plc - MREO
The investigation concerns whether Mereo and certain of its officers and/or directors have engaged in securities fraud or other unlawful business practices.
[Click here for information about joining the class action]
On July 9, 2025, Mereo and its development partner Ultragenyx Pharmaceutical Inc. issued a press release“announc[ing] that the randomized, placebo-controlled Phase 3 portion of the Orbit study evaluating UX143 (setrusumab) in pediatric and young adult patients with osteogenesis imperfecta (OI) is progressing toward a final analysis[.]” Following a Data Monitoring Committee meeting, the two companies advised that the final analysis would occur“around the end of the year.”
On this news, Mereo's American Depositary Receipt (“ADR”) price fell $1.25 per share, or 42.52%, to close at $1.69 per share on July 10, 2025.
The Pomerantz Firm, with offices in New York, Chicago, Los Angeles, London, and Paris is acknowledged as one of the premier firms in the areas of corporate, securities, and antitrust class litigation. Founded by the late Abraham L. Pomerantz, known as the dean of the class action bar, the Pomerantz Firm pioneered the field of securities class actions. Today, more than 80 years later, the Pomerantz Firm continues in the tradition he established, fighting for the rights of the victims of securities fraud, breaches of fiduciary duty, and corporate misconduct. The Firm has recovered numerous multimillion-dollar damages awards on behalf of class members. See .
Attorney advertising. Prior results do not guarantee similar outcomes.
CONTACT:
Danielle Peyton
Pomerantz LLP
...
646-581-9980 ext. 7980


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