Summary
On May 18, 2026, a nine-member advisory jury in Oakland unanimously dismissed all claims in Elon Musk's federal lawsuit against OpenAI, Sam Altman, Greg Brockman, and co-defendant Microsoft, finding that Musk had exceeded the applicable statutes of limitations before filing the case in February 2024. After deliberating for less than two hours, the jury returned its findings; U.S. District Judge Yvonne Gonzalez Rogers immediately adopted them and dismissed the action. The verdict ended a three-week trial without any judicial or jury determination of whether OpenAI's 2025 conversion from a nonprofit to a Delaware Public Benefit Corporation had actually breached the charitable trust Musk alleged — the central legal question the litigation was designed to resolve.
What Happened
Elon Musk filed Musk v. Altman (case 4:24-cv-04722-YGR) in federal court on February 29, 2024, alleging that OpenAI, Sam Altman, Greg Brockman, and Microsoft had breached a charitable trust formed by his approximately $38 million in early contributions and unjustly enriched themselves through the company's for-profit conversion. Judge Gonzalez Rogers narrowed the original 26-count complaint to two surviving claims by trial: breach of charitable trust and unjust enrichment. The liability phase opened April 28, 2026, with jury selection and opening arguments, and extended through three weeks of testimony from Musk, Altman, Brockman, and other witnesses.
The jury's task at the close of evidence was to advise the court on a threshold legal question before reaching the merits: had Musk filed within the applicable limitations windows? The breach of charitable trust claim carried a three-year limitations period; unjust enrichment carried a two-year limit. Both clocks, under California and federal procedural doctrine, begin running when the plaintiff knew or should have known of the alleged harm. Musk's attorneys argued the limitations period did not begin until OpenAI's for-profit restructuring was substantially complete, and asked the court to instruct the jury on the "continuing violation" doctrine, which can extend limitations in cases of prolonged misconduct. Judge Gonzalez Rogers declined to include the continuing violation instruction, a ruling Musk's team characterized as prejudicial.
The jury deliberated for less than two hours on the morning of May 18, 2026, beginning at 8:30 a.m. and returning its findings at 10:23 a.m. Pacific time. All claims against all defendants were found time-barred. Judge Gonzalez Rogers adopted the findings and dismissed the case. The ruling did not address whether OpenAI's conversion constituted a breach of charitable trust, whether Musk's contributions had established an enforceable trust obligation, or whether the defendants had unjustly enriched themselves — the questions that had motivated the litigation and on which the three-week trial had produced extensive testimony.
In a post on X, Musk characterized the dismissal as a "calendar technicality" and stated he would appeal to the Ninth Circuit. His legal team indicated the appeal would press the continuing violation doctrine and contest the court's refusal to include it in jury instructions. Bloomberg reported that within days of the verdict, OpenAI was preparing to file its IPO prospectus confidentially with the SEC, with Goldman Sachs and Morgan Stanley as lead underwriters and a September 2026 listing target.
Why It Matters
The dismissal on statute of limitations grounds closes the immediate litigation threat to OpenAI's corporate structure without producing any authoritative ruling on the underlying charitable trust question. The legal theory at the center of Musk's case — that early contributions to a nonprofit AI lab create binding charitable trust obligations restricting subsequent for-profit conversion — has not been validated or rejected by any court. That question remains legally open. If Musk's Ninth Circuit appeal revives the case on merits, or if analogous claims are brought by other plaintiffs with timelier filings, the unresolved merits question will again require adjudication.
The procedural resolution also means the evidentiary record built during three weeks of testimony — including Musk's admissions about the gap between his announced $1 billion pledge and his actual $38 million in contributions, Brockman's sworn disclosure of OpenAI's $50 billion 2026 compute budget, and testimony about Musk's demands for personal control of the company — enters the historical record without producing a judicial assessment of credibility or weight. The jury's dismissal on limitations grounds did not require it to evaluate the substance of any witness's account.
For OpenAI, the verdict removes a structural litigation cloud that had generated uncertainty for investors and potential IPO underwriters. A judgment unwinding the PBC conversion or removing Altman and Brockman would have represented an extraordinary form of court-ordered corporate restructuring; its absence restores the status quo. The verdict does not, however, resolve the parallel governance proceedings in California and Delaware, where the California Attorney General and Delaware Attorney General had been reviewing the conversion terms separately from the federal litigation. Those regulatory reviews were ongoing as of the date of dismissal and involve different legal standards and different governmental actors from those in the federal case.
What the dismissal does not settle: whether the Ninth Circuit will grant the appeal and remand on the continuing violation theory; whether the charitable trust question will be litigated in state court under California's enforcement mechanisms for charitable trusts; and whether the governance frameworks Musk's litigation helped publicize — the OpenAI Foundation's 26% equity stake, the terms of the PBC conversion, the scope of Microsoft's governance rights — will face continued scrutiny through regulatory rather than judicial channels.
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