Anthropic Files Its S-1, Setting Up a Nasdaq IPO Under the Ticker ANT

Anthropic, the company behind Claude, has filed to go public. Its announcement says that on October 26, 2026, Anthropic, PBC filed a registration statement on Form S-1 with the U.S. Securities and Exchange Commission for a proposed initial public offering of its Class A common stock.

We confirmed the filing on SEC EDGAR: an S-1 from Anthropic, PBC (CIK 0002130357), filed October 26, 2026, file number 333-299633.

What’s set and what isn’t

• Anthropic plans to list on the Nasdaq Global Select Market under the symbol ANT.
• The number of shares and the price range haven’t been set.
• The registration statement isn’t effective yet, so no shares can be sold until it is.
• Goldman Sachs and Morgan Stanley are named as the contacts for the preliminary prospectus.

Numbers from the filing

These figures come from the S-1 itself:

• Revenue: $16.3 billion for the six months ended June 30, 2026, up from $1.2 billion a year earlier. Full-year revenue was $4.6 billion in 2025.
• Operating loss: $693 million for the first half of 2026, down from $2.1 billion a year earlier.
• Net loss: $80.7 billion for the first half of 2026. The filing attributes most of that to a $72.4 billion change in the fair value of convertible notes, derivative liabilities and SAFEs, not to day-to-day operations.

The prospectus also describes Anthropic’s governance as a public benefit corporation. Its Long-Term Benefit Trust holds a special Class T stock that can elect a majority of the board. A single Class F share, held by an LLC of the co-founders, would carry 50.1% of the vote on general stockholder matters.

The preliminary prospectus is incomplete and can change before the offering. Nothing here is investment advice.

Sources: Anthropic announcement, SEC EDGAR filing index, Form S-1.