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StocksUpdated•Originally published 5 May 2026•Updated 6 May 2026•

1 min read

OpenAI Co-founder Discloses $30 Billion Stake and Financial Ties to Sam Altman

Key Facts

1OpenAI co-founder Greg Brockman disclosed a stake in the company worth nearly $30 billion.

2Disclosures revealed deeper financial ties between Brockman and CEO Sam Altman than previously known.

OpenAI President Greg Brockman testified in an Oakland federal court to defend the company's transition to a for-profit model against a lawsuit filed by Elon Musk. During the testimony, it was revealed that the OpenAI non-profit foundation holds a 27% stake in the for-profit entity, while Microsoft owns 26%. Brockman stated that the foundation’s equity stake is currently valued at $150 billion, highlighting the massive scale of the company's private valuation. These revelations follow earlier disclosures regarding Brockman’s personal $30 billion stake and his deep financial ties to CEO Sam Altman. The court proceedings provide unprecedented transparency into the ownership structure of the ChatGPT creator amid intensifying legal and regulatory scrutiny. While these valuation figures are historic, the immediate impact on public markets remains contained as the company is not yet publicly traded.

28 days ago

Version History

Version 128 days ago

What changed: Updated the story with specific details from Greg Brockman's court testimony, including exact ownership percentages for the OpenAI foundation and Microsoft, and the total valuation of the foundation's stake.