Anthropic filed a Form S-1 registration statement with the U.S. Securities and Exchange Commission on October 26, 2026, for a proposed initial public offering. The SEC filing index records Anthropic, PBC’s submission. This filing marks a milestone; it does not mean shares have begun trading.
In its announcement, Anthropic said it intends to list Class A common stock on the Nasdaq Global Select Market under the symbol ANT. The company had not determined the number of shares to offer or the offering’s price range.
What is established, and what is still proposed
| Item | Status in the reviewed sources |
|---|---|
| S-1 submission | Recorded on October 26, 2026. |
| Nasdaq symbol ANT | Anthropic’s intended symbol. |
| Offering price and share count | Not yet determined in the announcement. |
| Registration effectiveness | The company said it was not yet effective at the time of the announcement. |
The SEC accession number is 0001628280-26-067168. It gives readers a specific record to follow rather than relying on a ticker alone. The index links the registration statement and its accompanying exhibits.
A filing is an earlier stage than a completed offering
Three separate questions matter when following this story: whether the registration is effective, whether final offering terms have been set and whether trading has started. A report answering only the first question cannot supply a price or a trading date. Later reporting should identify the document or exchange notice that establishes each development.
Anthropic’s announcement explicitly said the registration statement had not become effective and that securities could not yet be sold under it. The filing should therefore not be presented as a completed listing, an agreed valuation, or SEC endorsement.
This report verifies the filing index and the company’s announcement. It does not claim to have fully reviewed the prospectus, financial statements, or risk factors. Broader Anthropic coverage remains separate from any assessment of the proposed securities.
