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Anthropic confidentially files for initial public offering with SEC
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Anthropic confidentially files for initial public offering with SEC

Jun 1, 2026

AI startup Anthropic has confidentially filed for an IPO with the SEC, positioning it ahead of rival OpenAI in the race to go public. Founded in 2021 by former OpenAI staff, the company recently achieved a $965 billion valuation and a $47 billion revenue run rate, overcoming a Pentagon blacklist to see its popularity in the private sector grow. The timing of the offering depends on SEC review and market conditions.

Anthropic confidential IPO filing

  • ▪The filing gives Anthropic the option to go public after the SEC completes its review, contingent on market conditions and other factors
  • ▪The number of shares to be offered and the price for the proposed IPO have not yet been determined
  • ▪Anthropic confidentially submitted a draft registration statement on Form S-1 to the U.S. Securities and Exchange Commission for a proposed IPO

AI startup valuation competition

  • ▪With its filing, Anthropic is moving ahead of rival OpenAI, which is also preparing a confidential IPO filing
  • ▪Anthropic recently closed a funding round that resulted in a $965 billion valuation, topping OpenAI's $852 billion valuation from late March

Anthropic revenue growth acceleration

  • ▪In May, Anthropic announced its revenue run rate had increased to $47 billion, up from $10 billion in annual revenue the previous year
  • ▪Anthropic was founded in 2021 by former executives and researchers who left OpenAI over concerns about the company's direction

Pentagon blacklist controversy

  • ▪Anthropic's AI models were blacklisted by the Pentagon earlier in the year following a clash with the Department of Defense
  • ▪Despite the Pentagon blacklist, Anthropic's popularity and adoption by private sector businesses increased

Claude Mythos cybersecurity capabilities

  • ▪Anthropic developed a model called Claude Mythos Preview with advanced cybersecurity capabilities
  • ▪Anthropic has discussed the capabilities of its Claude Mythos model with senior members of the Trump administration

2 sources

Anthropic
Anthropic confidentially submits draft S-1 to the SEC
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Cnbc
Anthropic confidentially files IPO prospectus with SEC
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