Microsoft CEO Satya Nadella testifies in federal court in Elon Musk’s lawsuit against OpenAI, addressing Microsoft’s role and investments in the AI company. Multiple outlets report that Nadella takes the stand during the third week of the trial and is questioned about Microsoft’s partnership with OpenAI and its support for Sam Altman. Nadella defends OpenAI’s shift toward a for-profit structure, saying that without a for-profit entity it would be difficult for OpenAI to pursue its mission. He also characterizes Microsoft’s investment in OpenAI’s nonprofit arm as creating substantial institutional support, with NDTV reporting he told the jury the nonprofit arm has become among the largest and best-funded nonprofits in the world. Other coverage describes that the testimony includes Microsoft officials’ earlier concerns about potential dependence on OpenAI during the early partnership. Nadella’s testimony comes ahead of expected questioning of Altman, which The Hindu says is among the final stages of the trial. Several reports also note that Musk lists Microsoft as a defendant, alleging Microsoft helped or knowingly supported OpenAI’s governance and profit-making transition amid Musk’s wider claims about control and charity-related commitments.