Anthropic files to go public on Nasdaq as ANT. What the S-1 shows

In brief

Developing. Last updated 27 October 2026, 18:09 Dubai time (UTC+4).

Anthropic, PBC filed a Form S-1 registration statement with the US Securities and Exchange Commission (SEC), which EDGAR accepted at 09:00 ET on 26 October 2026 (17:00 Dubai time). It has applied to list Class A shares on the Nasdaq Global Select Market under the ticker ANT. The price range and number of shares are blank in the filing, and the registration is not yet effective, so no shares can be sold yet.

The Associated Press described the filing as being for "what could be the biggest initial public offering of stock ever". That framing is AP's; the offering size is not set.

What the S-1 shows

Figures below are quoted from the S-1, with periods.

• Revenue. $16,286 million for the six months ended 30 June 2026, against $1,163 million a year earlier. Full-year revenue was $4,585 million in 2025 and $386 million in 2024.
• Operating loss. $693 million for the first half of 2026, and $8,060 million for full-year 2025.
• Net loss. $80,748 million for the first half of 2026. The filing attributes $72.4 billion of that period's figure to changes in the fair value of convertible notes, derivative liabilities and SAFEs, mainly because a higher enterprise valuation raised the fair value of its convertible notes. That is an accounting remeasurement that does not involve cash.
• Compute commitments. About $265.6 billion of fixed or minimum guaranteed commitments as of 30 June 2026, over terms of one to 20 years. Separately, the S-1 describes agreements, some amended after 30 June, to spend at least $110.0 billion with Amazon (May 2026 to April 2036), at least about $114.5 billion with Google (April 2026 to July 2033) and at least $44.9 billion with Microsoft (November 2026 to May 2033); these are full contract amounts, not a breakdown of the $265.6 billion figure.

Some items are left blank in this version, including third-quarter revenue and the contractual obligations table.

Why it matters to IT leaders

A supplier becomes a public company. Organisations running Claude will get regular public financial reporting on a key supplier. On governance, a Long-Term Benefit Trust elects a board majority, and a co-founder vehicle will hold 50.1% of general voting power.

The compute bill is the main risk. Revenue has grown quickly, but long-term commitments with Amazon, Google and Microsoft run well into the 2030s. That affects pricing and capacity for customers, including the same cloud providers many organisations already buy from.

Scrutiny will increase. A listing brings more formal disclosure of risks. Our coverage of Anthropic's offline evaluations showed why that detail matters.

What to do next

1. Re-read your Claude contract terms on pricing changes, capacity and change of control.
2. Track the amended S-1 for the price range, the final share count and updated risk factors.
3. Keep a second model supplier tested to reduce single-vendor dependence.

This is not investment advice.

Sources and scope

• Anthropic, PBC, Form S-1 registration statement, filed 26 October 2026 (EDGAR filing index, accepted 26 October 2026 at 09:00 ET). Revenue, operating loss and net loss are from "Summary Consolidated Financial and Other Data" (page 23). The $265.6 billion figure is from the 'Commitments and Contingencies' note (page F-59). The Amazon, Google and Microsoft commitments are from "Liquidity and Capital Resources—Infrastructure Service Arrangements" in Management's Discussion and Analysis (pages 171-172). Governance details are from the prospectus cover page.
• Anthropic, Anthropic files S-1 with the SEC for proposed initial public offering, 26 October 2026.
• The Associated Press, Anthropic files for potentially the biggest IPO ever as CEO warns of risk to humanity from AI, by Barbara Ortutay and Bernard Condon, 26 October 2026. The "biggest IPO ever" framing is used only with attribution to AP. AP's site could not be loaded directly, so the text was read in BNN Bloomberg's syndicated copy.

All sources were checked on 27 October 2026. The S-1 is a preliminary prospectus and may change. Its figures for the first half of 2025 and 2026 are unaudited. No secondary reporting was used for any figure. The analysis and recommendations are ByteNib editorial analysis, not investment advice. This article was researched and drafted with AI assistance, including Anthropic's Claude, and edited under ByteNib's editorial standards. Anthropic, whose Claude helps draft ByteNib content, is the subject of this article, and its claims are attributed to it throughout.

Drafted with AI assistance and reviewed by the editor before publication.

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