Satya Nadella Testifies in Musk v. Altman: Musk Never Raised Concerns About Microsoft's OpenAI Investment

Microsoft CEO Satya Nadella took the stand in Oakland federal court on 11 May 2026 and testified that Elon Musk never raised concerns to him about Microsoft's multi-billion-dollar investment in OpenAI, the deal Musk now seeks to unwind as part of his US$150 billion damages claim. Nadella's testimony complicates Musk's contention that the Microsoft partnership constituted illicit gains flowing from a violated charitable trust. The Nadella appearance opens the trial's third week. Earlier in the week, Greg Brockman rebutted Musk's account of OpenAI's founding and described secret work he had done for Tesla. The trial is now at its midpoint. Judge Gonzalez Rogers is expected to issue her binding ruling in mid-May 2026.