Samuel Altman

Samuel Altman

Founder at
Hydrazine Capital GP LLC

Net worth: 258 M $ as of 31/07/2026

41 year
Finance
Technology Services
Consumer Services

Profile

Mr. Samuel H.
Altman
is a Chief Executive & Financial Officer, Secretary at OpenAI Foundation, a Chief Executive Officer at OpenAI OpCo LLC, a Chief Executive Officer & Director at OpenAI LLC, a General Partner at Hydrazine Capital GP LLC, a Chief Executive Officer at Merge Labs Corp.
and a Chief Executive Officer at OpenAI Group PBC.
He is on the Board of Directors at OpenAI LLC, Boom Technology, Inc., Expedia, Inc. and Teespring, Inc. Mr. Altman was previously employed as a Chief Executive Officer & Director by AltC Acquisition Corp., an Independent Director by Bridgetown 2 Holdings Ltd., an Independent Director by Bridgetown Holdings Ltd. (Hong Kong), an Independent Director by Expedia Group, Inc., a Chief Executive Officer by OpenAI OpCo LLC, a Chairman by Tools For Humanity Corp., a Chairman by Oklo, Inc., a President by Y Combinator LLC, a Chief Executive Officer & Director by Loopt, Inc., an Advisor by Apollo Management LP, an Independent Director by Churchill Capital Corp.
VI, a Chairman by Helion Energy, Inc., and a Chief Executive Officer by OpenAI LLC.
He also served on the board at Green Dot Corp.
and Reddit, Inc. He received his undergraduate degree from Stanford University.

Known holdings in public companies

CompanyDateNumber of sharesValuationValuation date
3.82%
06/03/2025 66,50,402 ( 3.82% ) 258 M $ 31/07/2026

Samuel Altman active positions

CompaniesPositionStart
Founder 01/04/2012
Director/Board Member -
Director/Board Member -
Director/Board Member -
Founder 01/01/2015
Chief Executive Officer 01/01/2015

Former positions of Samuel Altman

CompaniesPositionEnd
Chairman 23/03/2026
OKLO INC. Chief Executive Officer 01/05/2024
Founder 17/11/2023
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See the detail of Samuel Altman's experience

Training of Samuel Altman

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62

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19

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Private companies19

Consumer Services

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