OpenAI CEO Sam Altman, whose company makes ChatGPT, arrives at Allen & Company's Sun Valley conference.
OpenAI CEO Sam Altman snapped up a $43 million estate in Hawaii in 2021, adding to his impressive real-estate portfolio.
  • OpenAI CEO Sam Altman owns multi-million dollar properties in San Francisco, Napa, and Hawaii.
  • Altman, who was fired and then reinstated as CEO of OpenAI this month, has tried to keep a relatively low profile. 
  • When BI set out to catalog his assets, we found a giant estate that's previously unknown.

Years before the recent drama at OpenAI turned CEO Sam Altman into a household name, the former Y Combinator president went on an extraordinary 18-month, $85 million real-estate shopping spree, according to records reviewed by Business Insider — including a previously unreported $43 million Hawaii estate on land that locals describe as historically significant.