Simpson Thacher & Bartlett LLP

Corporate/Mergers and Acquisitions

Alan Klein is a Partner in the Firm's Mergers and Acquisitions Practice and has previously served as Global Co-Head of the Mergers and Acquisitions Practice. He represented the Board of Twitter in the company’s sale to Elon Musk. He has advised Microsoft on various transactions, including its acquisition of Activision Blizzard, LinkedIn and Skype, among others. He also represented ChemChina in its acquisition of Syngenta, the largest acquisition ever by a Chinese company; Tyco in its merger with Johnson Controls; and numerous other companies in cutting-edge transactions including Cisco, ADT, Best Buy, Wendy’s and Royal Ahold. He has also advised the boards of public companies including Aetna, Xerox, Yahoo and Baker Hughes, among others, on corporate governance matters.

Joined, 1984; Partner, 1993.

BA, with Honors Phi Beta Kappa, Haverford College (1981); J.D., cum laude, Harvard Law School (1984).