Merck acquires Terns Pharmaceuticals

Merck agreed to acquire Terns Pharmaceuticals. Reported deal value: Undisclosed. Status: Announced. Sector: Biopharmaceuticals. Target headquarters context: Foster City, California, United States.

This page summarizes publicly available information about the transaction as of 2026-04-24. Figures and status may change as filings and press coverage update.

Merck , known as MSD outside of the United States and Canada, today announced that the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended , in connection with Merck pending acquisition of Terns Pharmaceuticals, Inc. expired at 11:59 p.m., Eastern Time, on April 23, 2026