Anthropic announced Monday, October 26, that it filed a public registration statement for a proposed initial public offering, while leaving the offering’s size and price range undecided.
The AI company said it intends to list Class A common stock on the Nasdaq Global Select Market under the symbol ANT. The filing is on Form S-1 with the U.S. Securities and Exchange Commission.
The announcement marks a public step toward a listing for the company behind Claude, but it does not establish a completed stock sale. Anthropic said the registration statement had not yet become effective and that the securities could not be sold before that happened.
The number of shares and proposed price range had not been determined, according to the company. Its announcement therefore does not set a final offering valuation or establish how much money the sale would raise.
Anthropic said any offering would be made through a prospectus. The outcome remains dependent on the offering process; Monday’s announcement concerns the filing, rather than the start of public trading.
Sources: Anthropic — public S-1 filing announcement, October 26, 2026: https://www.anthropic.com/news/s1-sec Associated Press — proposed Anthropic IPO, October 26, 2026: https://apnews.com/article/anthropic-ipo-shares-public-ca2f4c282bef3201a392e59e3df2300c