Microsoft CEO Satya Nadella spent three hours on the stand in the Musk v. Altman OpenAI trial, testifying about investment, governance, and the Altman ouster.
Microsoft Chief Executive Satya Nadella testified for approximately three hours on May 10 in the federal trial over OpenAI's governance and corporate structure, addressing the company's multi-billion-dollar investment in OpenAI, its conduct during Sam Altman's brief removal from the organization in November 2023, and Microsoft's understanding of OpenAI's foundational charitable mission [1]. Nadella's appearance marked one of the highest-profile witness examinations in the proceeding, with plaintiffs positioning his testimony as central to their theory that Microsoft benefited from OpenAI's alleged departure from its nonprofit mandate [1].
The trial is pending in the U.S. District Court for the Northern District of California, in Oakland [1]. Elon Musk filed suit against Altman, OpenAI, and affiliated defendants, alleging that OpenAI abandoned the public-benefit mission under which it was originally chartered and that its transition toward a for-profit structure breached foundational obligations to donors and the public [1]. Microsoft is named as a defendant on the theory that it was a knowing beneficiary of that alleged departure [1].
Nadella's testimony surfaced new disclosures about Microsoft's internal response to the November 2023 governance crisis, during which OpenAI's board abruptly ousted Altman before reinstating him days later [1]. Plaintiffs used the episode to probe whether Microsoft, as a major capital partner, exerted influence inconsistent with OpenAI's stated nonprofit governance structure [1]. Altman took the stand the following day and testified that Amazon, Nvidia, and SoftBank each invested more in OpenAI than Microsoft, a framing that appeared aimed at recontextualizing Microsoft's relative standing among the company's financial backers [1].
The significance of the proceeding extends beyond the specific dispute between the parties. The case presents a federal court with contested questions about how charitable-mission obligations attach to a hybrid nonprofit-for-profit corporate structure, how large technology investors interact with governance of AI-development entities, and whether donors or co-founders hold cognizable legal interests when an organization is alleged to have deviated from its founding purpose. No comparable case has reached trial on these facts.
Proceedings are ongoing. Additional witnesses and further examination of the investment relationships and governance record are expected before the court reaches any ruling on the merits [1].