Pfizer has acquired 42 companies, including 8 in the last 5 years. A total of 12 acquisitions came from private equity firms. It has also divested 16 assets.

Pfizer’s largest acquisition to date was in 2000, when it acquired Warner-Lambert Company for $90.2B. It’s largest disclosed sale occurred in 2006, when it sold Pfizer Consumer Healthcare to Johnson & Johnson for $16.6B. Pfizer has acquired in 11 different US states, and 8 countries. The Company’s most targeted sectors include life science (90%) and consumer products (6%).
https://mergr.com/pfizer-acquisitions