PRESS RELEASE
4 November 2025

Arnold & Porter Advises Microsoft On Next Chapter Of OpenAI Partnership

AP
Arnold & Porter

Contributor

Arnold & Porter is a firm of more than 1,000 lawyers, providing sophisticated litigation and transactional capabilities, renowned regulatory experience and market-leading multidisciplinary practices in the life sciences and financial services industries. Our global reach, experience and deep knowledge allow us to work across geographic, cultural, technological and ideological borders.
Arnold & Porter represented Microsoft Corporation in connection with the recapitalization of OpenAI into a public benefit corporation. Following the recapitalization, which closed on October 28...
United States

Arnold & Porter represented Microsoft Corporation in connection with the recapitalization of OpenAI into a public benefit corporation. Following the recapitalization, which closed on October 28, Microsoft holds an investment in OpenAI Group PBC valued at approximately $135 billion.

The Arnold & Porter team was led by partner Annette Becker, and included partners Laurie Abramowitz and Stephanie Coutu, and senior associate Eric An.

Contributor

Arnold & Porter is a firm of more than 1,000 lawyers, providing sophisticated litigation and transactional capabilities, renowned regulatory experience and market-leading multidisciplinary practices in the life sciences and financial services industries. Our global reach, experience and deep knowledge allow us to work across geographic, cultural, technological and ideological borders.

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