Anthropic has just officially announced that its has filed its IPO prospectus with the SEC.
"Today, Anthropic confidentially submitted a draft registration statement on Form S-1 to the U.S. SEC for a proposed IPO of our common stock. The number of shares to be offered and the price have not yet been set."
https://x.com/SawyerMerritt/status/2061481319540969902
https://www.anthropic.com/news/confidential-draft-s1-sec