Anthropic has filed a Form S-1 registration statement with the US Securities and Exchange Commission for a proposed initial public offering. Published on October 26, 2026, the document reveals the Claude developer’s financial results, intended exchange and unusual governance arrangements. The company says it has applied to list its Class A common stock on the Nasdaq Global Select Market under the symbol ANT.
The filing puts official numbers behind the scale of Anthropic’s business. Revenue reached $16.286 billion in the first six months of 2026. Its most striking loss figure needs context, however: the $80.748 billion net loss is not a measure of how much cash the company spent during that period.
A filing, not a completed IPO
The S-1 registers a proposed offering; it does not establish that shares are already trading. The preliminary prospectus leaves the number of shares, estimated price range and closing date blank. This version therefore does not establish an IPO price, a final offering valuation or a first trading day.
Both Anthropic and existing stockholders are expected to sell Class A shares. The company will not receive proceeds from the selling stockholders’ sales. Goldman Sachs and Morgan Stanley appear first among the underwriters on the cover. Filing a registration statement does not mean the SEC has approved the securities or endorsed the company as an investment.
Revenue increased roughly fourteenfold
For January through June 2026, Anthropic reported revenue of $16.286 billion, compared with $1.163 billion in the same period of 2025. That is approximately fourteen times the earlier figure; the company describes the increase as 1,300%. For context, revenue for the whole of 2025 was $4.585 billion.
Consumption-based revenue contributed about $13.1 billion, or 80% of the first-half 2026 total. Subscription-based revenue accounted for approximately $3.2 billion, or 20%. Claude’s financial results therefore extend well beyond monthly subscriptions purchased by individual users.
Anthropic cautions that it does not expect comparable growth rates to continue. Early adoption, a young market and rapid expansion among existing customers can produce growth that becomes harder to repeat as a business gets larger. One half-year’s performance should not automatically be treated as a forecast for the following year.
Understanding the $80.7 billion net loss
The first-half 2026 net loss was $80.748 billion, but the operating loss was much smaller: $693 million, down from $2.135 billion a year earlier. These figures measure different aspects of performance and should not be used interchangeably.
The largest separate expense outside operating results was a $72.388 billion change in the fair value of convertible notes, derivative liabilities and SAFE agreements. Anthropic attributes this primarily to the increased fair value of outstanding convertible promissory notes as its enterprise valuation rose. This is an accounting remeasurement of financial instruments, not an equivalent payment to computing suppliers.
A further $8.757 billion appeared as other expense, net. The company says that decrease was primarily driven by the initial recognition and changes in fair value of assets and liabilities under note purchase agreements.
Describing the full $80.7 billion as cash that Anthropic “burned” would therefore misrepresent the accounts. The remeasurement nevertheless remains part of the company’s reported GAAP net loss.
Cash flow and the cost of computing
Operating activities generated $3.929 billion of cash in the first half of 2026, compared with $1.513 billion of cash used in the same period of 2025. Anthropic attributes the improvement to its loss after noncash adjustments and changes in working capital, including the timing of supplier payments and customer receipts.
Positive operating cash flow does not establish GAAP profitability, nor is it the same as free cash flow. It records cash movements within the operating category and does not include all investment-related cash flows. Reading it alongside the income statement gives a more useful picture than selecting one headline number.
Compute and infrastructure expenses rose from $2.334 billion to $8.945 billion between the two half-year periods. These are expenses in the stated income-statement category, not automatically capital expenditure or equipment purchases. The growth of Claude’s business remains closely connected to the availability and cost of computing capacity.
A distinctive governance structure
Immediately before the offering closes, Anthropic plans to issue a single Class F share to an entity organized by its co-founders. That share will carry 50.1% of total voting power on matters generally submitted to stockholders, including director elections other than those for Class T directors. It will have no economic rights.
Separately, the Long-Term Benefit Trust’s Class T rights generally allow it to elect and remove directors who together constitute a majority of the authorized board. Saying that the founders will have complete control of the board would therefore be inaccurate.
The arrangement combines founder voting power with separate trust powers. Anthropic also remains a public benefit corporation required to consider its stated public-benefit purpose.
What is still unresolved
The disclosed risks include reliance on a limited number of computing suppliers, substantial infrastructure expenses, competition and fluctuations in financial performance. Sustained profitability is not assured.
Further registration amendments will matter if Anthropic proceeds: they should clarify offering terms that are currently absent. For now, the confirmed milestone is the publication of the S-1, rather than a completed IPO or an established trading date.
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