Fresh questions are being raised around Sam Altman after court documents revealed that the OpenAI chief holds major investments in several companies that also do business with OpenAI. The details came out during an ongoing courtroom fight involving Elon Musk and have now sparked wider political and regulatory attention in the United States.
What began as a legal dispute between Musk and OpenAI is now turning into a broader debate about transparency, leadership ethics, and potential conflicts of interest inside one of the world’s most influential AI companies.
Court records shown during Tuesday’s hearing revealed that Altman owns more than $2 billion worth of stakes in companies that have partnerships, supply agreements, or other business ties with OpenAI. Musk’s lawsuit is seeking $150 billion in damages and also calls for Altman to be removed from OpenAI’s leadership and board.
Altman denied wrongdoing in court and said he deliberately stepped away from important discussions whenever companies linked to his investments were involved. According to him, OpenAI followed normal corporate procedures and the board handled final approvals on sensitive deals.
The controversy has also started drawing attention from lawmakers. A group of ten Republican attorneys general asked the US Securities and Exchange Commission to closely review OpenAI’s records ahead of a possible IPO in the future. At the same time, the US House Committee on Oversight and Government Reform requested information about how OpenAI manages conflicts of interest involving executives.
One of the biggest investments disclosed in court was Altman’s stake in Helion Energy, which was valued at around $1.7 billion by the end of 2025. Helion has been working with OpenAI on future energy supply agreements as AI systems continue to require massive amounts of power.
The documents also listed a $633 million stake in fintech company Stripe and a $258 million investment in biotech startup Retro Biosciences. Both companies reportedly have business relationships with OpenAI.
Other names mentioned during the hearing included AI chipmaker Cerebras, workforce software company Lattice, AI device startup Humane, and biotech company Formation Bio.
Court filings also showed that Altman had already sold his holdings in Reddit by the end of 2025. His Reddit stake had previously been worth more than $600 million around the company’s stock market debut in 2024.
During testimony, Altman said he first invested in Helion in 2015 because he strongly believed in the founders and the future of fusion energy. He later encouraged OpenAI to explore a partnership with the company as demand for AI computing infrastructure continued to rise.
Still, Musk’s lawyer Steven Molo argued that Altman’s involvement in discussions tied to companies where he held financial stakes created what he described as an “obvious conflict.” The hearing also examined OpenAI’s content partnership with Reddit and a large computing agreement involving Cerebras.
The growing scrutiny now places additional pressure on OpenAI at a time when the company is expanding rapidly and facing increasing public attention over how it is managed. So far, the SEC has not publicly commented on the matter.
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