This market will resolve to "Yes" if Sam Altman formally takes equity in OpenAI by December 31, 2025, 11:59 PM ET. Otherwise, this market will resolve to "No". Taking equity is defined as Sam Altman acquiring or being granted shares, stock options, or any other form of ownership interest in OpenAI. Any pre-existing interest held through Y Combinator's investment fund or other indirect holdings made prior to Altman becoming full-time at OpenAI will not count toward this market's resolution. The resolution source for this market will be a consensus of credible reporting.