Basel, October 22, 2025 – Novartis today announced the expiration of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended (the “HSR Act”), in connection with Novartis’ previously announced tender offer to acquire all of the outstanding shares of common stock, par value $0.0001 per share (the “Shares”), of Tourmaline Bio, Inc., a Delaware corporation (“Tourmaline”), at a price of $48.00 per Share, in cash, without interest and subject to any applicable withholding.