Overview

Tech billionaire; CEO of Tesla and SpaceX; founder and CEO of xAI (merged with SpaceX in February 2026 at a combined $1.25T valuation); owner of X (Twitter); co-founder and former board member of OpenAI (2015–2018). The world’s wealthiest individual as of April 2026. Plaintiff in Musk v. Altman et al., a $150B suit alleging OpenAI’s leadership reneged on commitments to keep the company a nonprofit in perpetuity. Suit dismissed by a 9-member federal jury in Oakland on May 18, 2026, on statute-of-limitations grounds; Musk has announced appeal to the Ninth Circuit.

Key Facts

  • Co-founded OpenAI with Sam Altman and Greg Brockman in 2015
  • Left OpenAI’s board in 2018 after disagreements over direction (including a failed attempt to merge OpenAI with Tesla)
  • Started xAI in 2023 as an OpenAI competitor; merged xAI with SpaceX in February 2026 at $1.25T valuation
  • Filed $134B lawsuit against OpenAI / Sam Altman / Greg Brockman / Microsoft (2024); November 2024 amended complaint asserted 26 claims, only 4 remain as of trial: unjust enrichment, fraud, constructive fraud, breach of charitable trust — per Musk v Altman Trial Preview — CNBC
  • Sought outcomes (per January 2026 filing): up to $134B in damages; return of “ill-gotten gains” to OpenAI’s nonprofit (not personally); removal of Altman and Brockman; unwinding the for-profit conversion
  • xAI/X separately sued OpenAI and Apple in Texas (2025) for anticompetitive behavior; hearing in May 2026
  • Separate xAI trade-secrets suit dismissed February 2026
  • Preparing SpaceX for what is expected to be a record IPO
  • May 18, 2026 verdict: 9-member federal jury in U.S. District Court (Oakland) unanimously rejected Musk’s claims after less than 2 hours of deliberation. Jury found Musk filed his suit after the relevant statutes of limitations expired (3 years for breach of charitable trust, 2 years for unjust enrichment). Jury concluded Musk was aware of OpenAI’s restructuring as early as 2021; his 2024 filing missed the August 5, 2021 cutoff for the charitable-trust claim. Judge Yvonne Gonzalez Rogers dismissed the claims “on the spot.” Musk-OpenAI Jury Verdict — NYT - 2026-05-18 Musk-OpenAI Jury Verdict — Ars Technica - 2026-05-18
  • Musk’s appeal commitment: announced plan to appeal to the Ninth Circuit. His lead counsel Marc Toberoff confirmed appeal but declined to specify the legal basis at the post-verdict press conference. Musk framed the loss as “calendar technicality” on X, attacking Judge Gonzalez Rogers as “activist Oakland judge, who simply used the jury as a fig leaf.”
  • Musk’s physical absence during trial: testified at the start; did not return for closing arguments or verdict; attended a state banquet in Beijing with Xi Jinping and Trump during closing testimony, despite a court order requiring availability. Lead counsel apologized to the court.
  • Outstanding antitrust claims: Musk’s November 2024 amended complaint added antitrust claims against Microsoft and OpenAI (board-cross-membership and anticompetitive-fundraising theories). These were not addressed in the May 18 verdict; Judge Gonzalez Rogers told Musk’s counsel they are “not very good claims” but has not yet dismissed them.

Newsletter Relevance

Multiple wiki clusters: AI Antitrust / Platform Antitrust (the Musk v. Altman trial as governance-remedy case, not just damages); Tech-State Conflict (SpaceX as critical state contractor); Process Is the Punishment (litigation as IPO-timing weapon, both sides). Musk’s parallel role as the world’s wealthiest individual and a litigant and a competitor of his defendants positions him uniquely in the wiki’s ongoing coverage of corporate-state-AI entanglement.

Connections

  • Sam Altman — defendant; former co-founder; now public adversary
  • Greg Brockman — defendant; OpenAI president
  • OpenAI — defendant; former Musk-funded nonprofit
  • Microsoft — defendant (aiding-abetting on charitable-trust claim)
  • xAI — Musk’s OpenAI competitor
  • SpaceX — Musk’s space company; merged with xAI Feb 2026
  • Tesla — Musk’s EV company; original failed-merger target
  • X (Twitter) — Musk-owned platform
  • Yvonne Gonzalez Rogers — presiding judge in Musk v. Altman

Source Appearances

Open Questions

  • Will Musk actually file the Ninth Circuit appeal he announced, or will it evaporate like the February 2026 xAI trade-secrets suit?
  • Does the Ninth Circuit accept the statute-of-limitations dismissal, or does it create new exposure for OpenAI?
  • Will the remaining antitrust claims (still technically alive) be dismissed by Judge Gonzalez Rogers, or proceed to a second trial phase?
  • Does the verdict accelerate OpenAI’s IPO timing (one of the largest in history if it proceeds)?
  • Does the failed trial damage Musk’s reputational standing in ways that affect SpaceX’s IPO road show?
  • Does Catherine Bracy / EyesOnOpenAI / others pressure CA AG Rob Bonta to revisit OpenAI’s restructuring agreement, opening a new institutional vector beyond Musk’s litigation?
  • Whether the Texas xAI/X v. OpenAI/Apple suit produces additional precedent