Musk-Altman Trial Over OpenAI’s Nonprofit Origins

Background & Context

OpenAI was founded in 2015 by Musk, Altman, Brockman, Ilya Sutskever and others as a tax-exempt charity dedicated to “advancing AI to benefit humanity.” In 2019 the organization created a for-profit subsidiary to raise capital for large-scale computing. The subsidiary was later restructured in 2025 as a public-benefit corporation (PBC) while the nonprofit retained a 26 % equity stake and additional warrants.

Key Figures & Groups

Elon Musk – Tesla, SpaceX, xAI founder; contributed $38-44 million (seed funding) and left the board in 2018.

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Sam Altman – OpenAI CEO; co-founder and primary decision-maker in the 2019 and 2025 restructurings.

The Hill

Greg Brockman – OpenAI President and co-founder; named alongside Altman in the suit.

Microsoft Corp. – $13 billion+ investor; co-defendant alleged to have aided the alleged breach.

GeekWire

Judge Yvonne Gonzalez Rogers – U.S. District Court for the Northern District of California, presiding over the case.

Timeline

May 2015 – OpenAI chartered as a nonprofit.

Dec 2015 – May 2017 – Musk donates $38-44 million.

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2018 – Musk resigns from the board.

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Mar 2019 – For-profit subsidiary created.

Oct 2025 – OpenAI converts to a PBC after regulator approval.

Aug 2024 – Musk files lawsuit alleging breach of charitable trust.

SFist

Apr 27 2026 – Jury selection begins in Oakland; opening arguments expected Tuesday.

Data & Statistics

OpenAI valuation: $852 billion (2026).

Weekly active users: ? 1 billion.

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Recent funding round: $122 billion.

Nonprofit stake: 26 % plus performance-based warrants.

Damages sought by Musk: $130-$150 billion (varies by source).

The Guardian

Why It Matters

A ruling that forces OpenAI back to a pure nonprofit could halt its planned IPO, disrupt its $13 billion partnership with Microsoft, and reshape corporate governance for AI research. Conversely, a dismissal would validate the for-profit model that underpins the current AI arms race.

Official Statements & Responses

OpenAI’s legal team described the suit as “a baseless and jealous bid to derail a competitor.” Musk’s counsel argues the conversion “violates almost every principle of law governing economic activity.” Microsoft maintains it partnered with OpenAI only after Musk’s departure and denies any collusion.

Criticism & Opposition

Legal scholars note the difficulty of overturning a regulator-approved restructuring, calling the remedy “extraordinary” (Jill Fisch, Univ. of Pennsylvania). Analysts such as Alex Kantrowitz view the case as “part business, part ego,” emphasizing that Musk’s primary aim is to protect his own AI venture, xAI.

Conflicting Reports & Gaps

Sources differ on the exact amount Musk contributed ($38 M vs. $44 M) and the damages figure ($130 B, $134 B, $150 B). OpenAI asserts Musk agreed to a for-profit plan in 2017; Musk’s filings claim he was misled. The extent of Microsoft’s knowledge of the nonprofit’s obligations remains disputed.

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Verbatim Quotes

“The perfidy and deceit are of Shakespearean proportions.” — Elon Musk, lawsuit filing.

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“His lawsuit remains nothing more than a harassment campaign that's driven by ego, jealousy and a desire to slow down a competitor.” — OpenAI, X post.

“Can't wait to start the trial. The discovery and testimony will blow your mind,” — Elon Musk, X (Jan 2024).

“Really excited to get Elon under oath in a few months, Christmas in April!” — Sam Altman, X (Feb 2024).