INVESTOR ALERT: Pomerantz Law Firm Investigates Claims On Behalf of Investors of ADC Therapeutics SA - ADCT

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On December 3, 2025, ADC issued a press release "announc[ing] updated data from the LOTIS-7 Phase 1b open-label clinical trial evaluating the safety and efficacy of ZYNLONTA® in combination with the bispecific antibody glofitamab (COLUMVI®) in patients with relapsed or refractory diffuse large B-cell lymphoma (r/r DLBCL)." Although the press release described the data in positive terms, the press release reported that adverse events occurred in two patients, one of which appeared to be treatment related. ADC also reported that cytokine release syndrome of all grades was observed in 36.7% of patients across dose levels. 

On this news, ADC's stock price fell $0.65 per share, or 14.13%, to close at $3.95 per share on December 3, 2025.

Pomerantz LLP, with offices in New York, Chicago, Los Angeles, London, Paris, and Tel Aviv, 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, Pomerantz pioneered the field of securities class actions. Today, more than 85 years later, Pomerantz 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 www.pomlaw.com.

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CONTACT:
Danielle Peyton
Pomerantz LLP
dpeyton@pomlaw.com
646-581-9980 ext. 7980

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SOURCE Pomerantz LLP