![Samuel Altman](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
Samuel Altman
Founder at
Hydrazine Capital GP LLC
Net worth: 445 M $ as of 31/05/2026
Profile
Samuel H.
Altman was the founder of Loopt, Inc., founded in 2005, serving as Chief Executive Officer from 2010 to 2011.
Mr. Altman is the founder of OpenAI Foundation, founded in 2015, holding the title Chief Executive & Financial Officer, Secretary.
Mr. Altman was the founder of OpenAI OpCo LLC, founded in 2019, serving as Chief Executive Officer & Director.
Mr. Altman is the founder of Hydrazine Capital GP LLC, founded in 2012, serving as General Partner since 2012.
Mr. Altman is the founder of Tools For Humanity Corp., founded in 2019, serving as Chairman since 2019.
Mr. Altman is the founder of OpenAI LLC, founded in 2015, serving as Chief Executive Officer & Director.
Mr. Altman is the founder of OpenAI OpCo LLC, founded in 2015, serving as Chief Executive Officer since 2015.
Mr. Altman is also the founder of Merge Labs Corp...
Mr. Altman is currently a Director at Expedia, Inc., Teespring, Inc., and Boom Technology, Inc. Former positions include Chief Executive Officer at OpenAI LLC; Chief Executive Officer & Director at AltC Acquisition Corp.
from 2021 to 2024; Chairman at Oklo, Inc. from 2015 to 2025; Independent Director at Expedia Group, Inc. from 2019 to 2023; Director at Green Dot Corp.
from 2014 to 2016; Director at Reddit, Inc.; Independent Director at Bridgetown Holdings Ltd. (Hong Kong) from 2020 to 2023; Director at Helion Energy, Inc.; Independent Director at Bridgetown 2 Holdings Ltd. from 2021 to 2022; Independent Director at Churchill Capital Corp.
VI; President at Y Combinator LLC from 2014 to 2019; Advisor at Apollo Management LP.
Education includes undergraduate studies at Stanford University.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
3.82% | 06/03/2025 | 6,650,402 ( 3.82% ) | 445 M $ | 31/05/2026 |
Samuel Altman active positions
| Companies | Position | Start |
|---|---|---|
Hydrazine Capital GP LLC
 Hydrazine Capital GP LLC Investment ManagersFinance Hydrazine Capital invests in companies located in the United States. The firm targets companies operating in various sectors including life sciences, education, specialty foods, marketplaces, big data, healthcare, consumer networks, enterprise software, and internet-connected hardware. The firm provides financing for early stage capital requirements. | Founder | 01/04/2012 |
Teespring, Inc.
 Teespring, Inc. Specialty StoresRetail Trade Operates as a merchandising platform | Director/Board Member | - |
Boom Technology, Inc.
 Boom Technology, Inc. Aerospace & DefenseElectronic Technology Manufactures supersonic passenger flight jet and aircraft for business travel | Director/Board Member | - |
Tools For Humanity Corp.
 Tools For Humanity Corp. Packaged SoftwareTechnology Services Develops digital identity platform and biometric verification technology tools | Founder | 01/01/2019 |
Expedia, Inc.
 Expedia, Inc. Other Consumer ServicesConsumer Services Operates an online travel agency | Director/Board Member | - |
OpenAI LLC
 OpenAI LLC Packaged SoftwareTechnology Services Develops AI platform | Founder | 01/01/2015 |
OpenAI OpCo, LLC
 OpenAI OpCo, LLC Packaged SoftwareTechnology Services Develops AI based research and deployment software platform | Chief Executive Officer | 01/01/2015 |
Former positions of Samuel Altman
| Companies | Position | End |
|---|---|---|
Helion Energy, Inc.
 Helion Energy, Inc. Packaged SoftwareTechnology Services Develops fusion technology designed for electricity production | Chairman | 23/03/2026 |
| OKLO INC. | Chief Executive Officer | 01/05/2024 |
| ░░░░░░ ░░░░░ ░░░ | ░░░░░░░ | ░░░░░░░░░░ |
| ░░░░░░ ░░░ | ░░░░░ ░░░░░░░░░ ░░░░░░░ | ░░░░░░░░░░ |
Training of Samuel Altman
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
37
1st degree connections
19
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 19 |
|---|---|
Expedia Group, Inc.
 Expedia Group, Inc. Other Consumer ServicesConsumer Services Provides online travel services | Consumer Services |
Green Dot Corp.
 Green Dot Corp. Finance/Rental/LeasingFinance Operates as bank holding company through its subsidiaries provides debit and credit cards & cash processing services | Finance |
Loopt, Inc.
 Loopt, Inc. Packaged SoftwareTechnology Services Provides social network services | Technology Services |
Helion Energy, Inc.
Helion Energy, Inc. Packaged SoftwareTechnology Services Develops fusion technology designed for electricity production | Technology Services |
Stanford University
 Stanford University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Reddit, Inc.
 Reddit, Inc. Internet Software/ServicesTechnology Services Operates and develops online platform that offers social news aggregation, content rating & discussion | Technology Services |
Y Combinator LLC
 Y Combinator LLC Investment ManagersFinance Y Combinator seeks investment opportunities in companies located in the United States. The firm focuses on a broad range of sectors and industries. It provides financing for seed and early stage capital requirements. | Finance |
Expedia, Inc.
Expedia, Inc. Other Consumer ServicesConsumer Services Operates an online travel agency | Consumer Services |
Apollo Management LP
 Apollo Management LP Investment ManagersFinance Apollo Global Private Equity invests in companies located across the globe primarily in North America. The firm targets companies operating across a broad range of sectors and industries. It provides financing for opportunistic buyouts and build-ups, corporate carve-outs, and distressed investments. | Finance |
Teespring, Inc.
Teespring, Inc. Specialty StoresRetail Trade Operates as a merchandising platform | Retail Trade |
Hydrazine Capital GP LLC
Hydrazine Capital GP LLC Investment ManagersFinance Hydrazine Capital invests in companies located in the United States. The firm targets companies operating in various sectors including life sciences, education, specialty foods, marketplaces, big data, healthcare, consumer networks, enterprise software, and internet-connected hardware. The firm provides financing for early stage capital requirements. | Finance |
Boom Technology, Inc.
Boom Technology, Inc. Aerospace & DefenseElectronic Technology Manufactures supersonic passenger flight jet and aircraft for business travel | Electronic Technology |
OpenAI OpCo, LLC
OpenAI OpCo, LLC Packaged SoftwareTechnology Services Develops AI based research and deployment software platform | Technology Services |
Bridgetown Holdings Ltd. (Hong Kong)
 Bridgetown Holdings Ltd. (Hong Kong) Financial ConglomeratesFinance Operates as a blank check company | Finance |
Bridgetown 2 Holdings Ltd.
 Bridgetown 2 Holdings Ltd. Financial ConglomeratesFinance Operates as a a blank check company | Finance |
Churchill Capital Corp. VI
 Churchill Capital Corp. VI Financial ConglomeratesFinance Operates as a blank check company | Finance |
Tools For Humanity Corp.
Tools For Humanity Corp. Packaged SoftwareTechnology Services Develops digital identity platform and biometric verification technology tools | Technology Services |
AltC Acquisition Corp.
 AltC Acquisition Corp. Financial ConglomeratesFinance Operates as a blank check company | Finance |
OpenAI LLC
OpenAI LLC Packaged SoftwareTechnology Services Develops AI platform | Technology Services |
- Stock Market
- Insiders
- Samuel Altman
