Founder Profile
Jack Clark
Last reviewed: October 2026 · By Swet Parvadiya
Who is Jack Clark?
Jack Clark is a founder of Anthropic PBC, which was founded in 2021 with Dario Amodei, Daniela Amodei, Sam McCandlish, Jared Kaplan, Tom Brown, Chris Olah and Ben Mann.
- Company founded
- Anthropic PBC
- Founded
- 2021
- Co-founders
- Dario Amodei, Daniela Amodei, Sam McCandlish, Jared Kaplan, Tom Brown, Chris Olah and Ben Mann
Background
Jack Clark reported on technology for Bloomberg and The Register before moving into AI policy. He was Policy Director at OpenAI, where he built its policy and government affairs work, and he writes the weekly Import AI newsletter.
Founding Story
Jack Clark is a co-founder of Anthropic and its head of policy. Since March 2026 he has also led the Anthropic Institute, a think tank the company launched to study the effects of AI. He was previously Policy Director at OpenAI and a technology journalist at Bloomberg and The Register, has co-chaired the Stanford AI Index, and represents Anthropic in work with government safety bodies and in external evaluations of frontier models. (Exact birth year remains publicly undisclosed).
Sources
This profile does not yet cite a source specific to Jack Clark. The sources below document the company company rather than the person, so check them against the claims above.
- SEC: Anthropic Form S-1 filed October 26, 2026 (Anthropic PBC)
- Anthropic: Public Form S-1 announcement (Anthropic PBC)