Anthropic publicly files for an initial public offering

A public filing, with the offering still ahead

Anthropic publicly filed its Form S-1 on October 26, 2026. Its announcement proposed an offering of Class A shares and an intended Nasdaq Global Select Market listing under ANT, while leaving the number of shares and price range undetermined. Associated Press reported the filing the same morning. [1][2][3]

The milestone was the public registration filing. The preliminary prospectus remained incomplete, the registration statement was not effective, and the filing did not establish a completed offering or the start of public trading. Anthropic said securities could not be sold before the registration became effective. [1][2]

What the financial disclosures covered

The filing reported $16.3 billion in revenue and an $80.7 billion net loss for the six months ended June 30, 2026. It attributed $72.4 billion of that loss to changes in the fair value of convertible notes, derivative liabilities and SAFEs, primarily driven by the rising valuation of its convertible notes. These were historical financial results, rather than proceeds raised by the proposed IPO; the company also warned that its recent revenue growth might not continue. [2]