Who gets to appoint the board of a company that builds frontier AI? Sam Altman runs OpenAI, Microsoft owns an economic interest and a nonprofit holds governing rights. Following those three strands helps explain how a model can change a market without its chief executive owning that market.
OpenAI · nonprofit control and a public benefit corporation
The OpenAI Foundation controls the board of the operating public benefit corporation. Altman is CEO. Bret Taylor chairs the board. The corporate structure gives the foundation powers that the percentages in an investor’s portfolio cannot capture. Governance and board
Capital and voting rights. In 2015 supporters pledged $1 billion. A pledge is not cash received on incorporation. At the 2025 recapitalisation the foundation held 26% and Microsoft roughly 27%. Those figures belong to that transaction. A personal voting or ownership percentage for Altman cannot be established from the cited disclosure. Capital and control
What a public filing actually offers
OpenAI announced that it had confidentially submitted a draft registration statement. The announcement itself neither opens exchange trading nor gives a reader a reservation or allocation of stock. OpenAI has separately warned that certain purported third-party equity transactions lack its approval. These distinctions matter to readers encountering pitches that borrow the name of a familiar product. Company filing announcement · Equity transaction policy
The product and its suppliers
GPT-6 Astra illustrates two sides of frontier AI. Users obtain a capable general-purpose tool through ChatGPT and the API. Serving them depends on costly computing capacity, access to distribution and relationships with infrastructure providers. The FTC’s staff study of cloud–AI partnerships describes how equity, spending commitments and access to technical information can affect competition. Its findings cover a group of partnerships and do not assign personal liability to Altman. Model announcement · FTC staff report
What the court decided in Musk v. Altman
Elon Musk challenged the use of assets committed to OpenAI’s original charitable mission. On 18 May 2026, the advisory jury found that his charitable-trust and restitution claims had been brought too late. On 20 May, Judge Yvonne Gonzalez Rogers confirmed that the district court had adopted the verdict. The ruling turned on the filing deadline and left the underlying claim about the founding promise undecided on its merits. Court minutes, 18 May · Post-trial order, 20 May
Information checked on 15 November 2026. Ownership figures and proposed transactions refer to the dates in the linked records.
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