Jack Clark (Anthropic)
British-born American AI policy specialist and former journalist; co-founder of Anthropic
| Jack Clark
| |
|---|---|
| Born | 2 March 1989 (Forbes) United Kingdom (Forbes) |
| Nationality | American (Forbes) |
| Residence | San Francisco, California (Forbes) |
| Occupation | AI policy specialist; former technology journalist |
| Known for | Co-founder of Anthropic; Import AI newsletter |
Jack Clark (born 2 March 1989) is a British-born American artificial intelligence policy specialist and former technology journalist. He co-founded Anthropic in January 2021 and writes the AI research newsletter Import AI.[1][2] On 10 November 2026 the Forbes Real-Time Billionaires list ranked Clark 219th in the world, with an estimated net worth of US$13.7 billion; Forbes lists the source of wealth as artificial intelligence.[1][3] In the annual World's Billionaires list published in 2026, Forbes had ranked Clark 567th, at US$7.0 billion.[4] Sources give his current role differently. Forbes and his own website call him head of policy, Anthropic's 2026 registration statement says he leads the Anthropic Institute, and TechCrunch calls him head of public benefit.[1][5][2][6] The amended statement of 10 November 2026 showed him as the beneficial owner of 242,271,840 Class A shares.[2]
Journalism
Forbes says Clark worked as a technology journalist at Bloomberg before joining OpenAI in 2016.[1] Anthropic's filing says he covered supercomputers, neural networks and advanced technology for publications including The Register and BusinessWeek.[2] His website says he wrote about distributed systems, quantum computers and AI research.[5]
OpenAI and Anthropic
At OpenAI Clark was policy director, responsible for the organisation's dealings with governments and regulators on AI development.[2][5] He was one of the authors of the 2020 GPT-3 paper.[7] He co-founded Anthropic in January 2021.[2] Fortune reported that he was expected to be one of the first managers of the Anthropic Public Benefit Fund, the subsidiary created for the company's public-benefit mission, which held 846.8 million shares.[8]
Listing and ownership
Anthropic filed to list on the Nasdaq under the symbol "ANT", with an indicated price range of US$70–78 a share in its 10 November 2026 amended filing. It said that the seven co-founders had each pledged to give 80% of their personal Anthropic equity to philanthropy, describing the pledges as voluntary and revocable rather than legally binding.[2] A single Class F share held by a founders' LLC will carry 50.1% of the votes.[2] TechCrunch reported that each co-founder would sell 3,378,378 shares in the offering, worth just under US$250 million each at the midpoint of the range.[6] Fortune estimated that each co-founder owned about 1.4% of the company on a fully diluted basis.[8]
Import AI and public roles
Clark writes Import AI. Forbes puts its subscribers at more than 69,000, while his website says it is read by 70,000 people a week.[1][5] His website says he was a founding member of the AI Index at Stanford University (2017–2024) and an inaugural member of the US National Artificial Intelligence Advisory Committee (2021–2024). It adds that he has served on advisory councils and working groups for bodies including the Center for a New American Security and the OECD.[5]
Political activity
FEC records for the 2022–2026 cycles show one itemised federal contribution: US$5,000 to the Anthropic PBC Political Action Committee in July 2026.[9]
Across the 1 non-memo records retrieved for the 2022–2026 cycles, the filtered total is US$5,000 (a lower bound). The largest recipient committees, as named in the filings, were ANTHROPIC PBC POLITICAL ACTION COMMITTEE (US$5,000).[9]
| Cycle | Total (US$, lower bound) | Records | Largest recipient committees (as filed with the FEC) |
|---|---|---|---|
| 2026 | $5,000 | 1 | ANTHROPIC PBC POLITICAL ACTION COMMITTEE ($5,000) |
Philanthropy
Like the other co-founders, Clark has pledged to give 80% of his personal Anthropic equity to philanthropy. Anthropic describes this as a voluntary and revocable commitment.[2]
Wealth
Forbes classes Clark as self-made, with wealth from artificial intelligence.[1]
Wealth history
Forbes has included this entry in its annual World's Billionaires list in 2 of the editions from 2001 to 2026 checked for this profile, starting with 2025. The table gives the rank and estimated net worth in each annual list, and, where applicable, the rank and estimate in the Forbes 400 list of the richest Americans.[4][1]
| Year | World's Billionaires rank | Net worth (US$ bn) | Forbes 400 rank | Forbes 400 net worth (US$ bn) |
|---|---|---|---|---|
| 2025 | 2623 | 1.2 | – | – |
| 2026 | 567 | 7.0 | 75 | 15.5 |
International and political links
This section uses the same ten headings for every profile in this series. Only specific, sourced actions are included; company-level and foundation-level actions are labelled as such. Where nothing was found, the entry reads "No documented involvement found in sources checked."
Israel (investments, operations, donations, contracts, statements)
No documented involvement found in sources checked.
Zionist or pro-Israel organisations and lobbying groups
No documented involvement found in sources checked.
Jewish communal charities
No documented involvement found in sources checked.
Gulf states
No documented involvement found in sources checked.
China
No documented involvement found in sources checked.
Russia
No documented involvement found in sources checked.
India
No documented involvement found in sources checked.
Palestinian or Arab causes
No documented involvement found in sources checked.
Home government
Clark sat on the US National Artificial Intelligence Advisory Committee from 2021 to 2024.[5] Anthropic's filing says that in February 2026, after the company stated that its technology should not be used for mass domestic surveillance or fully autonomous weapons, the President directed federal agencies to stop using it and the Secretary of War ordered it designated a "supply-chain risk to national security". A federal district court in California largely granted Anthropic summary judgment on 27 August 2026, but on 25 September 2026 a divided D.C. Circuit panel upheld one of the designations. Anthropic has asked for a rehearing by the full court.[2]
Other international links
Forbes gives his country of birth as the United Kingdom. His website lists advisory work with the OECD.[1][5]
See also
Notes
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 Forbes, Forbes profile record for Jack Clark (Forbes data feed behind forbes.com/profile/jack-clark/) Forbes, live record, read 10 November 2026, accessed 10 November 2026.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 Anthropic, PBC, Form S-1/A (Amendment No. 2) registration statement U.S. Securities and Exchange Commission, 10 November 2026, accessed 10 November 2026.
- ↑ Forbes, Forbes Real-Time Billionaires data feed Forbes, live; downloaded 10 November 2026 23:28 UTC, accessed 10 November 2026.
- ↑ 4.0 4.1 Forbes, Forbes World's Billionaires list data feed, annual editions 2001–2026 (one file per year at this path with the year substituted; all 26 files downloaded and read) Forbes, annual lists; downloaded 20 October 2026, accessed 10 November 2026.
- ↑ 5.0 5.1 5.2 5.3 5.4 5.5 5.6 Jack Clark, About jack-clark.net, n.d., accessed 10 November 2026.
- ↑ 6.0 6.1 Julie Bort, All 7 Anthropic founders will each cash out about $250M in IPO TechCrunch, 10 November 2026, accessed 10 November 2026.
- ↑ Tom B. Brown et al., Language Models are Few-Shot Learners arXiv:2005.14165, 28 May 2020, accessed 10 November 2026.
- ↑ 8.0 8.1 Nick Lichtenberg, Anthropic’s 7 cofounders are each worth $14 billion already—and that could double in an IPO. They’ve promised to give most of it away Fortune, 26 October 2026, accessed 10 November 2026.
- ↑ 9.0 9.1 U.S. Federal Election Commission, OpenFEC Schedule A (itemised individual contributions) query, contributor name "CLARK, JACK"; 2026 cycle shown in link, the 2022, 2024 and 2026 cycles were queried together with the same parameters; top 100 records by amount; records filtered by employer/occupation and name, memo entries excluded U.S. Federal Election Commission, data as filed; queried 10 November 2026, accessed 10 November 2026.