Anthropic, the maker of the Claude Al models, has filed confidentially for an initial public offering after one of the fastest revenue expansions in the technology industry's history. The company said on June 1, 2026 that it had submitted a draft S-1 registration statement to the U.S. Securities and Exchange Commission for a proposed IPO, with the number of shares and the price not yet set and the offering dependent on market conditions, according to TechCrunch. The company was founded in 2021 by siblings Dario and Daniela Amodei and a group of former OpenAl researchers.