The S-1 mechanics are these. Anthropic submitted a confidential draft on Form S-1 to the SEC on June 1, 2026. Confidential status means the document’s risk factors, revenue details, margins, and growth trajectory stay private until the company elects to disclose them. What is public: the direction and the scale. (anthropic.com)

What had already leaked into reporting: the annualized revenue run rate has crossed $47 billion. (CNBC, NPR) That number deserves a frame. Salesforce, which built its enterprise platform over two decades, reported $34.9 billion for all of fiscal 2024. Anthropic’s current run rate is 35 percent above that. The velocity: $9 billion at year-end 2025, $14 billion in February, $30 billion in April, $47 billion now. (Fortune) Four data points in five months.

Target listing: as early as October 2026. Wilson Sonsini, the firm that handled Google’s 2004 IPO, is reportedly engaged as legal counsel. No share count. No price range. Both wait on market conditions and the eventual public prospectus.

What the filing will need to address: the cost of safety. Anthropic’s Responsible Scaling Policy, alignment research compute, the Glasswing infrastructure, and the interpretability evaluations required to clear Mythos for public release are all real expenditures. None appear in the run-rate number. Public markets will want to know how they flow through to margins.

What the filing will not need to justify, at this valuation: the market’s belief in the product. $47 billion in annualized revenue settled that argument. The S-1, when it becomes public, is the document that explains the gap between the safety story and the growth story. It will be the read of the year.