Sullivan & Cromwell
| Headquarters | 125 Broad Street New York, NY 10004 United States |
|---|---|
| No. of offices | 13 total, 9 international |
| No. of attorneys | 840 (2024) |
| Major practice areas | General practice |
| Key people |
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| Revenue | $1.765 billion (2021) |
| Date founded | 1879 |
| Founder | Algernon Sydney Sullivan William Nelson Cromwell |
| Company type | Limited liability partnership |
| Website | sullcrom |
Sullivan & Cromwell LLP is an American multinational law firm headquartered in New York City. Founded in 1879 by Algernon Sydney Sullivan and William Nelson Cromwell, the firm has played a key role in the development of corporate and financial law in the United States, including the development of shareholder derivatives, antitrust actions, federal income tax law, and securities registration. It has advised on transactions including the formation of U.S. Steel and the creation of Edison General Electric. They have been involved in a range of high-profile legal matters and maintain a significant presence in the U.S. and internationally.
Sullivan & Cromwell handled landmark deals, including Ford Motor Company's $643 million offering in 1956, and adapted to evolving business trends by establishing dedicated banking and mergers and acquisitions units.
Internationally, the firm has a long history of involvement, from financing America's infrastructure to advising the Panama Canal Authority. It was among the first U.S. firms to open overseas offices, although its history includes controversial actions such as aiding Nazi Germany's arms buildup and involvement in the 1954 Guatemalan coup d'état.
Sullivan & Cromwell's lawyers have been involved in various controversies, including insider trading scandals, work with tobacco companies, and criticism for its role in the FTX cryptocurrency exchange collapse. In 2024, the firm announced the hiring of a background check company to investigate students involved in pro-Palestinian groups. This scrutiny extended to candidates who participated in protests, even if they did not use problematic language themselves. In 2025, the law firm represented President Donald Trump and participated in the second Trump administration's efforts to punish his political opponents.