Greg Brockman and wife, Anna Brockman leaves Oakland courthouse after revealing nearly $30 billion OpenAI stake in Musk trial

Greg Brockman, OpenAI’s president, left the Ronald V. Dellums US Courthouse in Oakland on Monday with his wife, Anna Brockman, after testifying in Elon Musk’s lawsuit over OpenAI’s future, a case that has brought the company’s origins, governance and finances into open court.

Greg Brockman and wife, Anna Brockman leaves Oakland courthouse.

A Reuters courtroom photo captured Brockman outside the courthouse as the trial over OpenAI’s planned for-profit conversion moved through its second week in California.

In testimony, Brockman disclosed that his stake in OpenAI is worth almost $30 billion, even though he said he did not invest any personal money in the company. That figure would put him among the world’s richest people and marked the first time the size of his holding had been publicly disclosed in court.

The disclosure came as Musk, who helped co-found OpenAI, presses claims that Sam Altman and Brockman betrayed the company’s nonprofit mission and steered it into a profit-seeking business for their own benefit.

Musk’s lawyers have argued that Brockman’s independence was compromised by financial incentives tied to Altman.

According to testimony summarized in the court reporter's record, Brockman said he holds stakes in two startups backed by Altman and also owns a share of Altman’s family fund.

Email evidence read in court showed that Altman’s 2017 compensation arrangement for Brockman, then valued at $10 million, was discussed with Musk’s family office chief, who wrote that Brockman could end up having “a greater allegiance to Sam as a result of this arrangement.”

When pressed on the loyalty issue, Brockman answered, “I don't know I would say it quite like that.” Musk’s team also tried to introduce a text message in which Musk asked Brockman about the settlement, only for Musk to respond, “By the end of this week, you and Sam will be the most hated men in America. If you insist, so it will be.” Judge Yvonne Gonzalez Rogers did not admit the exchange as evidence.

The case remains a high-stakes fight over OpenAI’s structure and direction.

Musk is seeking Altman and Brockman’s removal as leaders and asking for $150 billion in damages, while OpenAI says Musk is motivated by control and resentment after leaving the company’s board in 2018.

Court reporting this week says the trial could determine the future of OpenAI, which transformed from a nonprofit research lab into one of the most valuable companies in the AI market.