Regeneron Pharmaceuticals, Inc. (REGN) Faces Securities Class Action Amid Disclosures About Key Trial's Protocol and Ultimate Failure - HBSS

SAN FRANCISCO, July 21, 2026 /PRNewswire/ -- Regeneron Pharmaceuticals (NASDAQ: REGN) faces a securities class action lawsuit after its surprising revelations concerning a Phase 3 clinical trial of a therapy intended to treat patients with melanoma. The news that the trial failed drove...