United StatesCo-founded it
Greg Brockman
Greg Brockman, a former Stripe CTO, co-founded OpenAI in 2015 and is its president; his fortune is his OpenAI stake, which he testified in 2026 was worth $20 billion to $30 billion.
- Forbes estimate
- $25.5B
- Forbes, 9 Oct 2026
- Forbes rank
- No. 95
- 9 Oct 2026
- Main company
- OpenAI
- Net worth, Bloomberg
- $25.5B
- Bloomberg, 17 Oct 2026
- Born
- 1987
- Thompson, North Dakota, United States
- Education
- Left university without a degree
- Left Harvard, then left MIT in his junior year to join Stripe in 2010
- Giving Pledge
- Not stated
Where the fortune sits
OpenAI stock
OpenAI
artificial intelligence, founded 2015
Forbes estimates 2.5% to 3%, from OpenAI's March 2026 valuation and his sworn testimony on 4 May 2026 that the stake was worth at least $20 billion and closer to $30 billion; no filing states a percentage
Co-founder and president
Other holdings
Stripe
About 7.5 million shares worth more than $471 million as of March 2026, per a court exhibit; he was Stripe's CTO until 2015
CoreWeave, Cerebras and Helion
Small stakes listed in the same exhibit
Where Greg stands among 73
Everyone on the site, grouped by their answer. Greg Brockman is outlined.
How the fortune started
Founded it
Founded it 42
Inherited and grew it 12
Built it up 8
Inherited it 6
Through marriage 5
Industry
Technology
Technology 24
Finance 10
Several industries 9
Metals and mining 6
Retail 4
Fashion and beauty 4
Media 3
Food and drink 3
Shipping 3
Crypto 2
Oil, gas and chemicals 2
Healthcare 1
Casinos and resorts 1
Property and sports 1
Giving Pledge
Not stated
Not stated 1
Not a signer 61
Signed 11
Education
Left university without a degree
Left university without a degree 6
Bachelor's degree 27
Graduate degree 24
No university 5
Not stated 11
Role today
Runs the company
Runs the company 32
Chair, board or owner 25
Founder, no executive role 8
No role 4
Retired 4
The person
- Born
- 1987Thompson, North Dakota, United States
- Citizenship
- United States
- Lives in
- San Francisco, California, United States
- Education
- Left university without a degreeLeft Harvard, then left MIT in his junior year to join Stripe in 2010
- Parents
- Son of two physicians
What they give
- Giving Pledge
- Not stated
- Foundation
- Not statedNo foundation or giving vehicle named in the cited sources
- Lifetime giving
- Not stated
Role and record
- Role now
- Runs the companyPresident of OpenAI
- Successor
- Not stated
- Public office
- None found
- Legal record
- None found
