Anthropic files S-1 registration statement with SEC, kicking off its IPO

ns123abc · x · 2026-10-27

Anthropic officially announced it has filed an S-1 registration statement with the SEC, formally starting its IPO process — a key step toward going public for OpenAI's biggest rival. Securities cannot be sold until the registration statement becomes effective.

Related event: Anthropic Files S-1 to Launch IPO Under Ticker $ANT with $75B Public Benefit Fund(6 posts)→

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