OpenAI completes restructuring into a public benefit corporation
Partly confirmed
The takeaway
OpenAI completed its recapitalization: the non-profit, renamed the OpenAI Foundation, controls the for-profit OpenAI Group PBC, and a new definitive agreement gave Microsoft roughly a 27% stake.
Status
- Claim
Partly confirmed
- Our reporting
- Medium confidence
- Importance
- 3 of 5
- Last verified
- 29 September 2026
Your AI and this story
- GPT-6 AstraIn its training data
- Claude Opus 5.5In its training data
- Gemini 4 HydrogenIn its training data
- Grok 4.7In its training data
It happened before the cutoffs of all four assistants, so it can be in their training data.
Key facts
- Announced 28 October 2025
- Non-profit renamed OpenAI Foundation; holds equity in OpenAI Group PBC
- Microsoft’s stake valued at ~$135B, about 27% on an as-converted diluted basis
- Microsoft’s IP rights extended through 2032; AGI declaration to be verified by an expert panel
What happened
After a year of negotiations with Microsoft and state attorneys general, OpenAI finalized its new corporate structure.
Why it matters
Removed a key obstacle to OpenAI raising capital at unprecedented scale while keeping nominal non-profit control.
Sources
2 sources from 2 sites. Numbers match the chips in the text.
2 sources: 2 primary
Primary
- Built to benefit everyone (OpenAI)openai.com, official
- The next chapter of the Microsoft–OpenAI partnership (Microsoft)blogs.microsoft.com, official
Changes
- Filed