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Alumis and ACELYRIN to Merge Creating a Late-Stage Clinical Biopharma Company Dedicated to Innovating, Developing and Commercializing Transformative Therapies for Immune-mediated Diseases

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ACELYRIN, INC.
ACELYRIN, INC.

Topline data from Phase 3 ONWARD trials for Alumis’ ESK-001 in moderate-to-severe plaque psoriasis on track for readout in first half of 2026; Topline data from Phase 2b LUMUS trial in systemic lupus erythematosus on track for readout in 2026

Evaluation underway of development plan for ACELYRIN’s lonigutamab to confirm differentiation in a capital efficient manner

Pro forma cash position of approximately $737 million as of December 31, 2024, provides runway into 2027, beyond expected multiple clinical readouts for highly differentiated late-stage portfolio

Alumis and ACELYRIN stockholders to own ~55% and ~45%, respectively, of combined company on a fully diluted basis

Combined company will operate under Alumis name with current Alumis executive team

Conference call to be held today, February 6, 2025, at 5:00 PM ET

SOUTH SAN FRANCISCO, Calif. and LOS ANGELES, Feb. 06, 2025 (GLOBE NEWSWIRE) -- Alumis Inc. (Nasdaq: ALMS), a clinical-stage biopharmaceutical company developing therapies using a precision approach to optimize clinical outcomes and significantly improve the lives of patients with immune-mediated diseases, and ACELYRIN, INC. (Nasdaq: SLRN), a late-stage clinical biopharma company focused on accelerating the development and delivery of transformative medicines in immunology, today announced a definitive merger agreement under which Alumis and ACELYRIN will merge in an all-stock transaction.

Martin Babler, President, Chief Executive Officer and Chairman of Alumis, said, “Through this combination with ACELYRIN, Alumis will have the financial flexibility and runway to advance an expanded late-stage pipeline, now including lonigutamab, and build commercial capabilities. Since completing our IPO, Alumis has operated with speed and rigor, and the multiple development milestones expected in 2025 and 2026, coupled with potential additional indications for ESK-001, represent exciting breakthroughs for our patients and value-driving opportunities for the combined company’s stockholders. As we move forward together, we will maintain financial discipline and a flexible capital allocation strategy with the goal of maximizing the value of our highly differentiated portfolio.”

Bruce Cozadd, Chair of the ACELYRIN Board of Directors and member of the Board Transaction Committee, said, “This merger represents the culmination of a thorough strategic review process by our Board and management team to determine the best and most value-maximizing path forward for ACELYRIN. We are confident that Alumis is the right partner to optimize the development of lonigutamab and together deliver long-term stockholder value.”