Anthropic files Form S-1 with the SEC for a proposed Nasdaq IPO

Anthropic, PBC announced on 26 October 2026 that it has filed a Form S-1 registration statement with the U.S. Securities and Exchange Commission (SEC) relating to a proposed initial public offering of its Class A common stock. Anthropic has applied to list its Class A common stock on the Nasdaq Global Select Market under the ticker symbol ANT.

In its filing announcement, the company stated that the number of shares to be offered and the price range for the proposed offering have not yet been determined. The offering is subject to market and other conditions, and the Form S-1 registration statement relating to the securities has been filed with the SEC but has not yet become effective.

Under SEC rules, the shares may not be sold, nor may offers to buy be accepted, prior to the time the registration statement becomes effective. Anthropic did not name lead underwriting banks, a target valuation or an expected trading date in the notice.