The OpenAI president revealed his stake in the ChatGPT maker during testimony in Elon Musk’s suit against the company.

The Musk v. Altman trial tests whether OpenAI’s for‑profit shift was legal — a ruling that could reshape how AI labs raise capital, structure governance and attract investors.

Musk kept his cool, and OpenAI’s lawyer bulldozed him with piercing questions about his motivations for suing the company.