Anthropic S-1: Revenue, Losses, and Financials Explained

The question does not name an issuer. The only S-1 filed today whose economics match the requested analysis—large fair-value charges on convertibles, derivatives, and SAFEs—is Anthropic, PBC (proposed Nasdaq ticker ANT). Figures below are taken from that filing. If a different issuer was intended, none of this applies.

Source and limit. Form S-1, Anthropic, PBC, CIK 0002130357, accession 0001628280-26-067168, filed October 26, 2026 (accepted 09:00:11), file number 333-299633. Primary document: anthropicpbc-sx1.htm (about 14.2 MB). The summary statements of operations and the non-GAAP summary were retrieved from prospectus pages 22–24. Management’s discussion, the notes, and the full financial-statement package sit later in that HTML and were not returned by page extraction (the fetch stopped at line 2,276, inside Risk Factors). Anything that lives only in those later sections is marked unverified.

What the income statement actually is

Anthropic does not present cost of revenue, gross profit, or gross margin in the summary statements. Compute is an operating expense, not a cost-of-sales line. The loss that headlines the filing is almost entirely a mark-to-market on financing instruments, not the cost of serving Claude.

All figures below are in millions of USD, from the “Consolidated Statements of Operations Data” table on prospectus pages 22–23. [1] [2]

Line	2023	2024	2025	Six months ended June 30, 2025	Six months ended June 30, 2026
Revenue	41	386	4,585	1,163	16,286
Compute and infrastructure	433	2,522	7,326	2,334	8,945
Personnel	95	454	1,839	538	3,152
Bartz settlement	—	—	1,500	—	—
Sales, marketing, and partnerships	2	43	568	120	3,168
Other operating and administrative	62	347	1,412	306	1,714
Total operating expenses	592	3,366	12,645	3,298	16,979
Operating loss	(551)	(2,980)	(8,060)	(2,135)	(693)
Interest income	69	106	431	115	1,111
Change in fair value of convertible notes, derivative liabilities, and SAFEs	(1,045)	(5,434)	(34,308)	(10,942)	(72,388)
Other income (expense), net	(2)	—	(8)	—	(8,757)
Loss before income taxes	(1,529)	(8,308)	(41,945)	(12,962)	(80,727)
Provision for income taxes	2	1	20	7	21
Net loss	(1,531)	(8,309)	(41,965)	(12,969)	(80,748)

Footnotes on the same pages: personnel includes stock-based compensation of $29 million, $192 million, and $1.2 billion in 2023, 2024, and 2025, and $286 million and $2.2 billion in the first halves of 2025 and 2026. The fair-value line is described as primarily an increase in the fair value of outstanding convertible promissory notes as enterprise valuation rose. Basic and diluted net loss per share for the first half of 2026 is $39.88 on 2,024,972,990 weighted-average shares.

The lines reconcile. First-half 2026: operating loss of $693 million, minus interest income of $1,111 million, plus the $72,388 million fair-value charge, plus other expense of $8,757 million, equals the $80,727 million pre-tax loss; tax of $21 million produces the $80,748 million net loss.

How much of the loss is non-cash or accounting

For the six months ended June 30, 2026, the filing itself identifies two non-cash items. They are not additive in the way press summaries imply, because stock-based compensation sits inside operating expenses.

Item	Amount ($ millions)	Where it sits	Share of $80,748 net loss
Change in fair value of convertible notes, derivative liabilities, and SAFEs	72,388	Below operating loss	89.6%
Stock-based compensation	2,200	Inside personnel, therefore inside the $693 operating loss	2.7%
Identified non-cash / accounting charges	74,588	—	92.4%
Residual net loss not identified as those two items	6,160	See caveat	7.6%

The residual is not “cash operating loss.” Cash-like operating loss in the half is only $693 million, and that figure already includes the $2.2 billion of stock-based compensation. Stripping stock-based compensation from operating loss would leave an operating result of roughly $1.5 billion of income before other adjustments—directionally consistent with the non-GAAP line below, but the exact bridge was not retrieved.

Cannot verify. Composition of the $8,757 million “other income (expense), net” in the first half of 2026. That line is large enough to matter (about 11% of the net loss) and is not broken out on the summary page. It could include impairments, foreign-exchange, or other non-cash items; the retrieved text does not say. Impairments are not a named line in the summary statement for any period shown. No warrant-only fair-value amount is separated from the combined convertible / derivative / SAFE line.

Same identified items for the full year 2025: fair-value charge $34,308 million (81.8% of the $41,965 million net loss) and stock-based compensation $1.2 billion. The $1,500 million Bartz settlement is a named operating expense, not labeled non-cash.

Gross margin: not a reported GAAP line

Cannot verify a reported gross margin. The summary statement has no cost of revenue and no gross profit. Compute and infrastructure is classified with operating expenses.

A ratio that treats compute as if it were cost of sales is an inference, not a filing metric:

Period	Revenue	Compute and infrastructure	Revenue minus compute	Compute as % of revenue
2023	41	433	(392)	1,056%
2024	386	2,522	(2,136)	653%
2025	4,585	7,326	(2,741)	160%
H1 2025	1,163	2,334	(1,171)	201%
H1 2026	16,286	8,945	7,341	55%

On that constructed basis, first-half 2026 is the first period in the table in which revenue exceeds compute spend ($1.82 of revenue per $1 of compute). That is not gross margin. Sales, marketing, and partnerships alone were $3,168 million in the half—about 19% of revenue—and personnel was another $3,152 million.

The filing does report margins, but they are operating margins, not gross margins (prospectus page 24):

	2023	2024	2025	H1 2025	H1 2026
GAAP operating margin	(1,344)%	(772)%	(176)%	(184)%	(4)%
Adjusted operating margin	(1,273)%	(722)%	(106)%	(159)%	10%
Adjusted operating income (loss), $ millions	(522)	(2,788)	(4,854)	(1,849)	1,618
Adjusted net income (loss), $ millions	(457)	(2,683)	(4,448)	(1,741)	2,671

GAAP operating margin of (4)% on $16,286 million of first-half revenue is the $693 million operating loss. Adjusted operating income of $1,618 million is $2,311 million better than GAAP operating loss. Disclosed stock-based compensation is $2.2 billion. The remaining roughly $111 million of the bridge is not explained in the pages retrieved; the prospectus points to a reconciliation under “Non-GAAP Financial Measures” that was not extracted. Pro forma net-loss adjustments for RSU settlement and convertible-note conversion are blank in the retrieved table.

Revenue by quarter and by segment: not in the retrieved statements

Quarterly revenue cannot be verified from the statements retrieved. The summary table is annual (2023–2025) and two six-month periods only. There is no three-month column.

The narrative that was retrieved states that revenue grew 1,368% year over year for the three months ended June 30, 2026, versus compute and infrastructure expense growth of 300% in that quarter, and that revenue went from $0 at commercial launch in the first quarter of 2023 to a dollar amount for the three months ended September 30, 2026. That September dollar figure extracted as a blank “$”. It is not usable.

Investor-day figures circulating in the press (about $4.7–4.8 billion in the first quarter of 2026, about $11.5–11.6 billion in the second quarter, and $16.8 billion in the third quarter) are not in the pages retrieved from the S-1. They are not used here. Note also that $4.8 billion plus $11.5 billion does not equal the filing’s first-half revenue of $16,286 million, so those press quarters should not be forced to reconcile to the S-1 until the quarterly table in the filing is read.

Segment revenue cannot be verified. No reportable-segment table, and no dollar split of API, consumption, or subscription revenue, appeared in the extracted text. The prospectus defines consumption (token) fees and subscription fees for a run-rate metric, but does not attach dollars to those categories in the retrieved pages. Customer-concentration percentages reported by the press about the draft prospectus were also not in the extracted text.

What the filing does quantify on the commercial side, as of the dates stated in the retrieved prospectus text: more than 11,900 customers with $100,000 or more of trailing-twelve-month revenue, more than 1,900 with $1 million or more, and about 250 with $10 million or more, as of September 30, 2026; net revenue retention of approximately 900% as of that date; trailing-twelve-month revenue per employee of over $6.6 million as of September 30, 2026, versus $1.4 million a year earlier. As of June 30, 2026, the company says it had raised $141.1 billion of capital, with cash and cash equivalents of $112.4 billion and short-term investments of $19.3 billion. The balance-sheet summary agrees in total: cash, cash equivalents, and short-term investments of $131,651 million, total assets $147,358 million, total liabilities $117,467 million, redeemable convertible preferred stock $157,510 million, accumulated deficit $132,902 million.

What this means if you are underwriting the offering

The operating business in the first half of 2026 is no longer the story the net-loss line tells. Revenue of $16.3 billion against an operating loss of $0.7 billion, and adjusted operating income of $1.6 billion, means the P&L has inflected even while compute is still booked as an operating expense rather than cost of sales. The $80.7 billion net loss is the convertible-note fair-value charge catching up with a rising private valuation. That charge reverses economically if the notes convert at the IPO—the pro forma table is built to eliminate it—but the dollar amount of that elimination is blank in the retrieved pro forma computation, so the post-conversion loss per share cannot be verified from these pages.

The number that is still open, and that the summary page does not close, is the $8.8 billion other-expense line. Until the notes are read, about $6 billion of the residual loss after identified non-cash items is unexplained. Quarterly cadence and any product or channel split are likewise unverified. Those are the sections to read next in the same filing: Management’s Discussion and Analysis, and the consolidated statements and notes that the summary says are “included elsewhere in this prospectus.”