Anthropic filed its IPO prospectus on Monday, revealing parts of its business and strategy while leaving specific financial figures blank.
The document, an S-1 filing, contains dozens of redacted numbers. One example states revenue grew from $0 at commercial launch in the first quarter of 2023 to $_____ for the three months ended September 30, 2026.
It is common for companies to withhold certain data in S-1 filings. Securities and Exchange Commission rules allow some leniency, particularly for information deemed confidential.
Anthropic did not respond to a request for comment.
Michael Dambra, an accounting and law professor at University at Buffalo School of Management, says there are practical reasons for the missing third quarter figures. September 30 was only a few weeks ago, and closing the books for a company of this size takes time.
Companies can be liable for misstatements in their registration statements. There is a strong incentive not to publish numbers before they have been fully vetted, Dambra says. SEC rules require that Anthropic would need to update the filing with third-quarter financials if the company goes public any later than about mid-November.
Regarding data center lease agreements, Erica Neuman, an accounting professor at Youngstown State University, says it is not unusual for companies to redact confidential details from contract exhibits, which could include lease terms.
However, Neuman adds that it is worth scrutinizing whether Anthropic’s redactions would prevent, or make it more difficult, for investors to analyze Anthropic’s financial obligations and whether they may impact the company’s cash flow.
The cost of compute
Many of Anthropic’s financial obligations relate to compute, which is the most significant operating cost in our business, according to the S-1. It is also a business risk for the company, laid out in terms of undersupply and overinvestment.
Parts of the AI industry have warned that chip constraints could slow the progress of AI. Anthropic’s prospectus puts more emphasis on the risks of overinvestment, stating that the company needs to make forward investments in compute resources that will seem irresponsibly large at first glance.
Chips, Anthropic explains, are approached as a single, fungible pool from multiple strategic partners, including Amazon, Google, Nvidia, and AMD. The company notes that it has entered into contracts with an aggregate committed spend of more than $____, substantially all of which is related to compute and infrastructure. Some of these contracts are set to be completed before December of 2030, while others may extend through 2045.
Though the prospectus touches on Anthropic’s compute uncertainties due to factors like limited land and power resources, Patrick Moorhead, CEO and chief analyst at Moor Insights & Strategy, believes investors are owed more detail.
It is about characterizing the odds and impact individually across each of the areas. Anthropic owes investors more information, such as a probability of these individual issues, characterizing the percentage chance and the degree of the impact, he tells WIRED. Not could materially impact.
Anthropic does provide some eye-catching estimates in footnotes. Since December 31, 2025, it has started or amended compute and infrastructure leases with future minimum payment obligations worth approximately $417 billion in aggregate. Since June 30, it has added another $245 billion to its future payment obligations, all related to infrastructure agreements. It also expanded certain existing commercial agreements that it caveats have not yet been finalized, for an additional $125 billion to $150 billion.
Include short term agreements with minimum non-cancelable payments, Anthropic says, and that is another $21 billion. In total, it will owe, at minimum, an estimated $808 billion if it follows through on all of this.
Ben Bajarin, chief executive and a principal analyst at Creative Strategies who tracks the chip industry, says that this is likely just the first draft of Anthropic’s prospectus, and that he expects a lot of gaps to be filled in an updated version.
Despite how common S-1 redactions are, Dambra describes them as controversial. While companies may argue that they are protecting proprietary information, Dambra says that skeptics accuse them of using redactions opportunistically in order to avoid disclosing politically or socially sensitive information.
However, Dambra argues that redacting information may come at a cost. He notes that companies with redactions in their S-1s were also more likely to underprice their shares at the initial public offering.
When companies redact information in their S-1, Dambra says they typically understand that they have created an information gap between them and outside investors. Understanding that investors will treat this gap with suspicion, companies may feel inclined to entice them to participate in the IPO by setting a lower starting price.
It is unclear what Anthropic’s opening price may end up being, or how investors may be interpreting the redactions in the company’s S-1. But according to Bajarin, the whole AI industry is one form of blank or another when it comes to crunching the numbers based on access to chips and infrastructure right now. So, yes, it is all a risk.
All of this, he says, just shows how absurdly early we are in enterprise adoption of an AI market that will be more than $3 trillion yearly and likely growing.
