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Allison M. Wein

Partner, Corporate

Allison M. Wein is a partner in Cravath’s Corporate Department. Her practice primarily encompasses mergers and acquisitions and general corporate matters.

Ms. Wein’s notable M&A transactions include representing:

  • Occidental Petroleum in its $57 billion acquisition of Anadarko, topping Anadarko’s original agreement with Chevron, the $8.8 billion sale of Anadarko’s African assets to Total, the $10 billion investment by Berkshire Hathaway and its defense against Carl Icahn;
  • Disney in its $85 billion acquisition of 21st Century Fox, overcoming an interloper bid by Comcast to its original $66 billion agreement, the $10.6 billion sale of the Fox Regional Sports Networks to Sinclair, the $3.47 billion sale of its interest in the YES Network to an investor group including the Yankees and Sinclair, and Endemol Shine’s pending acquisition by Banijay Group;
  • Hasbro in its pending $4 billion acquisition of Entertainment One;
  • Warner Media in its investment in NewTV, as part of its $1 billion initial funding round;
  • Northrop Grumman in its $9.2 billion acquisition of Orbital ATK;
  • AveXis in its $8.7 billion acquisition by Novartis;
  • OneBeacon Insurance and White Mountains Insurance in the $1.7 billion sale of OneBeacon Insurance to Intact Financial;
  • British American Tobacco in its $97 billion merger with Reynolds American;
  • The Strategic Review Committee of the Board of Directors of Yahoo in the $4.48 billion acquisition of Yahoo’s operating business by Verizon;
  • Ashland in its $600 million acquisition of Pharmachem;
  • Time Warner in its investment in Hulu;
  • White Mountains Insurance in its $2.2 billion sale of Sirius International Insurance to China Minsheng Investment;
  • Precision Castparts in its $37.2 billion acquisition by Berkshire Hathaway;
  • Amblin Partners and Steven Spielberg in the formation of Amblin with Participant Media, Reliance Entertainment and Entertainment One;
  • Xerox in the $1.05 billion sale of its information technology outsourcing business to Atos;
  • BDT Capital Partners in its equity investment in Marquette Transportation Company;
  • Johnson & Johnson in its $1.75 billion acquisition of Alios BioPharma;
  • AerCap in its $7.6 billion acquisition of International Lease Finance from AIG; and
  • IBM in acquisitions and dispositions aggregating more than $3 billion in value, including the sale of its x86 server business to Lenovo and the acquisitions of Trusteer, UrbanCode and the business operations of Lighthouse Security Group.

In 2019, Ms. Wein was named an M&A “Rising Star” by The Deal in The Dealmaker Quarterly. She has been recognized for her transactional work in the technology industry by The Legal 500 and for her work in mergers and acquisitions by IFLR1000.

Ms. Wein was born in Manassas, Virginia. She received a B.A. magna cum laude from the University of Pennsylvania in 2004 and a J.D. cum laude from Northwestern University in 2010, where she was an Associate Editor of the Northwestern University Law Review. Ms. Wein joined Cravath in 2011 and became a partner in 2019.

Ms. Wein may be reached by phone at +1‑212-474-1918 or by email at

Ms. Wein is admitted only in New York.

+1 (212) 474-1918
+1 (212) 474-3700