Anthropic has taken its first formal step toward a public listing, confirming on 1 June 2026 that it has confidentially submitted a draft Form S-1 registration statement to the US Securities and Exchange Commission. The filing gives the company the option to proceed with an IPO once the SEC completes its review, though no shares, price range, or firm timeline have been set.
The announcement follows a period of rapid commercial growth. Anthropic closed a $65 billion Series H round last week, pushing its post-money valuation to $965 billion — up from $380 billion in February — and overtaking OpenAI as the world's most valuable private startup. The company has also reported a revenue run rate of $47 billion, compared to $10 billion in annual revenue the previous year, with much of that growth driven by Claude's coding assistant products.
The confidential filing route — now standard for high-profile listings — allows Anthropic to work through regulatory disclosure requirements before its prospectus becomes public. A listing as early as autumn 2026 has been reported, though the company has made no formal commitment to a timetable.
Anthropic's move comes as the technology IPO market prepares for an unusually crowded year. SpaceX and OpenAI are both advancing toward their own public debuts, with the three companies collectively representing a concentration of frontier AI capital that has no precedent in public markets.
Reception in the developer community has been mixed. Enthusiasm about public access to Anthropic equity is tempered by concern that shareholder pressure could compromise model quality.