finance
Greg Brockman Testifies in Elon Musk Lawsuit Against OpenAI
The federal trial pitting Elon Musk against OpenAI and its leaders entered its second week, with president Greg Brockman confirming his personal stake in the company is worth roughly $30 billion. Musk seeks to unwind OpenAI's for-profit structure and remove top executives. The case, heard in Oakland, focuses on claims of breach of charitable trust and unjust enrichment.
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The trial between Elon Musk and OpenAI entered its second week on Monday, May 4, 2026, with OpenAI president Greg Brockman taking the stand in a federal courtroom in Oakland. Brockman confirmed his personal stake in OpenAI is worth roughly $30 billion. Musk's counsel questioned Brockman for two hours, returning to the $30 billion figure more than a dozen times.
The case is being argued before Judge Yvonne Gonzalez Rogers. The trial opened on April 28, 2026. Judge Gonzalez Rogers has bifurcated the proceedings into a liability phase and a separate remedies phase.
The liability phase is expected to conclude around May 21, 2026. A nine-person jury sits during the liability phase only, and the jury's verdict is advisory. Structural remedies fall solely to Judge Gonzalez Rogers.
The trial is expected to run another two to three weeks from May 5, 2026. Sam Altman has not yet testified in the trial as of May 5, 2026. Microsoft chief executive Satya Nadella is expected to testify.
Stuart Russell, a Berkeley computer scientist, will appear as Elon Musk's expert on AI risk. Judge Yvonne Gonzalez Rogers declined a request from Musk's counsel that Stuart Russell be permitted to range beyond his written report into extinction scenarios. Two days before the trial began on April 28, 2026, Elon Musk texted Greg Brockman to gauge interest in settlement.
Greg Brockman proposed mutual dismissal in response to Elon Musk's text. Elon Musk replied to Greg Brockman that he and Sam Altman would be the most hated men in America by week's end. Judge Yvonne Gonzalez Rogers declined to admit the text exchange between Elon Musk and Greg Brockman.
