OpenAI CEO Sam Altman speaks to media following a Q&A at the OpenAI data center in Abilene, Texas, U.S., Sept. 23, 2025.
Shelby Tauber | Reuters
OpenAI on Tuesday announced it has completed its recapitalization, cementing its structure as a nonprofit with a controlling stake in its for-profit business.
The artificial intelligence startup said its nonprofit is now called the OpenAI Foundation, and it holds an equity stake worth about $130 billion in its for-profit arm. OpenAI said its for-profit arm is now a public benefit corporation, called OpenAI Group PBC.
Under the new structure, the OpenAI Foundation will hold a 26% stake in the for-profit, with 47% held by current and former employees and investors.
Microsoft, which has invested over $13 billion in OpenAI, backing the company as early as 2019, said it supports OpenAI’s recapitalization and now holds an investment in the PBC that is valued at $135 billion, or roughly 27% of the company on an as-converted diluted basis.
The company said it held a 32.5% stake in the for-profit on an as-converted basis, excluding OpenAI’s recent funding rounds.
Microsoft shares rose 3.5% in premarket trading on Tuesday.
“The more OpenAI succeeds as a company, the more the non-profit’s equity stake will be worth, which the non-profit will use to fund its philanthropic work,” OpenAI said in a blog post.
The startup said the OpenAI Foundation will make an initial $25 billion commitment to work to accelerate health breakthroughs and technical solutions to AI resilience.
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