San Francisco, USA
Visionary entrepreneur leading the AI revolution. Under his guidance, ChatGPT became the fastest-growing consumer app ever, hitting 100M users in 2 months. Prolific investor with 160+ investments across AI, energy, crypto, and biotech.






500m+
Weekly active users for ChatGPT
$10m
Donation to Y Combinator Research
6
Companies Founded
2,000+
OpenAI employees
8
Sectors operated in
8
Sectors operated in
2,000+
OpenAI employees
6
Companies Founded
$58bn
Funding raised
90+
Early stage investments
Born & Raised
One of four siblings, Sam was born in Chicago in 1985 and raised in suburban Missouri. His mother was a dermatologist and his father a real estate broker.
US
Sam grew up in St. Louis, Missouri with his four siblings. His mother was a dermatologist and his father a real estate broker.
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27th June 2024


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An American fusion research company, developing a technology to produce produce low-cost clean electric energy using a fuel that can be derived exclusively from water.
2015 – Present

A venture capital fund that invests in early-stage companies, particularly focusing on Seed and Venture rounds.
2012 – Present

An American technology startup accelerator and venture capital firm which has been used to launch more than 5,000 companies
2011 – 2019

Location-based social networking app.
2005 – 2012

Oklo
2024 – 2025
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Oklo
An advanced nuclear technology company that designs compact fast reactors.
2024 – 2025
California

Helion Energy
2015 – Present
Washington

Helion Energy
A fusion power company aiming to build the world's first fusion power plant
2015 – Present
Washington

Y Combinator
2014 – 2019
California

Y Combinator
An American technology startup accelerator and venture capital firm which has helped launch more than 5,000 companies.
2014 – 2019
California

2014 – 2022
California

An American proprietary social news aggregation and forum social media platform
2014 – 2022
California
Founders Brands Limited
180 Strand, 2 Arundel Street, London,
United Kingdom, WC2R 3DA
Company number: 15716753
VAT number: 487 5152 58
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