Altman's net worth was estimated at $1.1 billion.

OpenAI announced that Altman would rejoin the board of directors.

Altman married engineer Oliver Mulherin.

OpenAI employees threatened to leave unless Altman was reinstated as CEO.

OpenAI announced an agreement in principle for Altman to return as CEO.

Microsoft CEO Satya Nadella announced that Altman would be joining Microsoft to lead a new advanced AI research team.

Altman was removed as CEO of OpenAI by the board.

Altman testified before the United States Senate Judiciary Subcommittee on Privacy, Technology and the Law.

Altman transitioned from president to chairman of the board at Y Combinator.

Altman became the CEO of OpenAI.

Altman announced his expanded role as president of YC Group.

Altman co-founded OpenAI.

Altman announced YC Continuity, a $700 million equity fund.

Altman was named president of Y Combinator.

Altman co-founded Hydrazine Capital with his brother, Jack Altman.

Loopt was acquired by the Green Dot Corporation for $43.4 million.

Samuel Harris Altman was born in Chicago, Illinois.