RAHWAY, N.J., & FOSTER CITY, Calif.--(BUSINESS WIRE)--Merck (NYSE: MRK), known as MSD outside of the United States and Canada, and Terns Pharmaceuticals, Inc. (“Terns”) (Nasdaq: TERN), a clinical-stage oncology company, today announced that the companies have entered into a definitive agreement under which Merck, through a subsidiary, will acquire Terns for $53.00 per share in cash for an approximate equity value of $6.7 billion. This equates to approximately $5.7 billion net of acquired cash a.