Things are moving fast at Anthropic. Less than a week after its enormous Series H round, the company confidentially submitted a draft of its registration statement — the famous Form S-1 — to the U.S. Securities and Exchange Commission on June 1. The IPO is no longer a rumor; it’s a process that’s underway.
What «Confidential» Actually Means Here
A confidential filing isn’t a contradiction. It lets Anthropic work through the S-1 draft with the SEC and gather feedback before the paperwork goes public. In the U.S., that’s the standard path for big tech IPOs: polish behind the scenes first, then go public with a finished document. The concrete terms — how many shares at what price — haven’t been set yet. The actual listing depends on market conditions.
The Context: a $965 Billion Valuation
The timing is no accident. Just days ago, Anthropic raised $65 billion in its Series H, lifting it to a post-money valuation of $965 billion. Reports put its annualized revenue at around $47 billion — driven mostly by Claude subscriptions across businesses and individuals. A lab at this scale can hardly keep funding itself through private rounds forever. The IPO is the logical next step.
A Whole Field Heading for the Markets
Anthropic isn’t alone here. OpenAI and SpaceX are also racing toward public markets — it’s one of the most dramatic tech IPO waves in ages. Who goes public first, and at what valuation, becomes a mood test for the entire AI boom.
My take: for a company that talks so much about safety, governance, and long-term responsibility, going public is a double-edged sword. More capital and more transparency on one side — but the quarterly pressure of public markets on the other. The interesting question is whether Anthropic can hold onto its «mission first» stance once it has to deliver numbers every three months. The confidential S-1 is just the beginning. The real look inside comes when the filing goes public.
Sources: Anthropic: Confidential draft S-1 to the SEC, TechCrunch: Anthropic files to go public, CNBC: Anthropic confidentially files IPO prospectus