WALTHAM, Mass. and SAN DIEGO, Aug. 21, 2026 (GLOBE NEWSWIRE) -- Werewolf Therapeutics, Inc. (Nasdaq: HOWL) and Ambros Therapeutics, Inc., today announced that they entered into a definitive merger agreement to combine the companies in an all-stock transaction. The combined company will focus on advancing Ambros Therapeutics’ neridronate development program in Complex Regional Pain Syndrome Type 1 (“CRPS-1”, formerly known as Reflex Sympathetic Dystrophy). Upon completion of the merger, the combined company will operate as Ambros Therapeutics, headquartered in San Diego, California, and is expected to trade under the Nasdaq ticker symbol “AMBX”.
- Proposed merger to create a Nasdaq-listed, late-stage biotechnology company advancing neridronate, a potential first FDA-approved treatment for CRPS-1, a debilitating orphan disease with 65,000 newly diagnosed U.S. patients annually and no currently FDA-approved therapy
- Pivotal CRPS-RISE Phase 3 trial evaluating neridronate remains ongoing, with FDA Breakthrough Therapy, Fast Track and Orphan Drug designations received and alignment with FDA that a single successful pivotal trial could potentially support approval
- Neridronate has been administered to approximately 600,000 patients in Italy across approved indications including CRPS-1
- Concurrent oversubscribed private placement of $150 million from a syndicate of leading healthcare-dedicated investors expected to fund company operations through CRPS-RISE Phase 3 topline results and planned NDA submission, with cash runway into 1H 2029
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