OpenAI co-founder discloses nearly $30 billion stake, financial ties to Altman

OpenAI President Greg Brockman is questioned by Elon Musk’s lawyer Steven Molo, during Musk’s lawsuit trial over OpenAI’s for-profit conversion before U.S. District Judge Yvonne Gonzalez Rogers at a federal courthouse in Oakland, California, U.S., May 4, 2026 in a courtroom sketch. REUTERS/Vicki Behringer Purchase Licensing Rights

OpenAI’s co-founder and president, Greg Brockman, on Monday disclosed deeper financial ​ties to CEO Sam Altman than previously known as well as a stake in the ChatGPT maker worth almost $30 billion.
The details were ‌shared in court during questioning by a lawyer for Elon Musk, who co-founded OpenAI and is now suing the company on grounds that it improperly became a for-profit company, abandoned charitable goals and should turn back into a nonprofit.

Musk’s team said that Brockman’s independence was potentially compromised by financial incentives that led him to support Altman, the driver behind OpenAI’s reinvention as a ​for-profit company. Brockman also disclosed in court that he holds stakes in two startups backed by Altman as well as a percentage of Altman’s ​family fund.
The trial, in its second week in a California courtroom, could determine the future of OpenAI, which sparked a widespread ⁠craze over generative artificial intelligence after launching its ChatGPT chatbot in late 2022. Since then, OpenAI has raised well over $100 billion from investors to hire researchers, ​buy computing power and expand the company ahead of a potential trillion-dollar IPO.

Musk is seeking the ouster of Altman and Brockman from leadership as well as $150 billion in ​damages.
Brockman early in his testimony agreed that his stake in OpenAI was worth close to $30 billion, a figure not previously known. In 2017, Altman gave Brockman a stake in Altman’s family office that was worth $10 million at the time. That same year, Brockman, Musk and other OpenAI executives discussed restructuring OpenAI as a for-profit so the organization could pay for the pricey ​computing power required to train AI systems.

2017 COMPENSATION ARRANGEMENT

Brockman said he did not discuss his compensation directly with Musk. Emails read out in court showed that Altman ​mentioned the arrangement during a separate conversation with Jared Birchall, Musk’s head of family office, who relayed the details to Musk.
“One thing worth mentioning now is that he compensated Greg ‌on the ⁠side by giving him a percentage ownership of Sam’s personal family office,” Birchall wrote in the email, adding the deal could mean that “Greg is going to have a greater allegiance to Sam as a result of this arrangement.” Musk forwarded Birchall’s note to Brockman with two question marks.

When pressed on whether he was loyal to Altman, Brockman said, “I don’t know I would say it quite like that.”

STAKES IN ALTMAN-BACKED STARTUPS

On Monday, Brockman disclosed that he owned shares of AI chip startup Cerebras, including ​during various moments when OpenAI discussed ​buying the chipmaker. This year, OpenAI ⁠has said it will spend a significant amount of money to buy Cerebras chips.
Brockman also said he has a stake in Helion Energy, a fusion startup in which Altman has already invested hundreds of millions of dollars. In March, Altman stepped ​down from Helion’s board because the two companies were looking to work together.

Source : https://www.reuters.com/sustainability/boards-policy-regulation/openai-co-founder-discloses-nearly-30-billion-stake-financial-ties-altman-2026-05-04/

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