Astera Labs had $584.9 million of revenue in the third quarter of 2026 and kept 72.3% of it as gross profit, according to the Form 10-Q it filed on 4 November. One unnamed direct customer, Customer A, accounted for 53% of that revenue. Of each sales dollar, 27.7 cents went to cost of revenue, 29.2 cents to research and development and 30.6 cents became operating income, by our arithmetic.
This analysis puts together what our three pieces on Astera’s quarter found: what it sells, where each dollar goes, who pays, how the Amazon warrants reduce revenue, and what the company guides to next. It uses the 10-Q, the 2025 Form 10-K and the 3 November earnings release.
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Astera Labs per dollar of revenue, third quarter 2025 against third quarter 2026: cost of revenue 23.8 to 27.7 cents, research and development 34.2 to 29.2 cents, sales, marketing and administration 18.0 to 12.4 cents, operating income 24.0 to 30.6 cents. Source: Astera Labs Form 10-Q filed 4 November 2026; per-dollar figures are our arithmetic. Chart: FourWeekMBA.
The key insight: By our arithmetic from its 10-Q, Astera Labs turned 30.6 cents of each third-quarter sales dollar into operating income, up from 24.0 cents a year earlier, while one direct customer accounted for 53% of revenue and warrants tied to Amazon purchases took $18.1 million off sales.
Astera sells connectivity chips and modules that move data between AI accelerators, CPUs, memory and networks. The 10-Q says it offers four product families and is “shipping millions of devices across leading hyperscalers”.
The families are Aries PCIe and CXL Smart DSP Retimers and Smart Cable Modules, Taurus Ethernet Smart Cable Modules, Leo CXL Memory Connectivity Controllers, and Scorpio Smart Fabric Switches. Retimers clean up signals over longer copper runs; fabric switches connect many accelerators to each other.
Chief executive Jitendra Mohan said in the release that third-quarter growth was “led by Scorpio, which ramped to high-volume production and became our largest product family by revenue”. The 10-Q says revenue rose “primarily due to an increase in overall unit shipments driven by higher demand for our Scorpio, Aries, and Taurus products”.
Prices also moved with the mix. The 10-Q cites “an increased mix of hardware modules and Scorpio products, partially offset by lower average selling prices within certain other product families”. Neither filing gives revenue by product family.
Where Astera Labs’ $584.9 million of third-quarter 2026 revenue went: $162.1 million of cost of revenue, $171.0 million of research and development, $72.7 million of sales, marketing and administration, and $179.1 million of operating income, 30.6 cents on the dollar. Source: Astera Labs Form 10-Q filed 4 November 2026; the per-dollar split is our arithmetic.
Where Each Dollar Goes
Revenue grew from $396.3 million in 2024 to $852.5 million in 2025, the 10-Q says, and reached $1.286 billion in the first nine months of 2026. In the third quarter, cost of revenue was $162.1 million, research and development $171.0 million, sales and marketing $37.4 million and general and administrative $35.3 million.
Per dollar of revenue, that is 27.7 cents of cost of revenue, 29.2 cents of research and development, 12.4 cents of sales, marketing and administration, and 30.6 cents of operating income, by our arithmetic. A year earlier the split was 23.8, 34.2, 18.0 and 24.0 cents.
So the chips themselves took a larger share of each dollar while every operating expense took a smaller one. Gross margin fell to 72.3% from 76.2%. The 10-Q says the decrease was “primarily driven by higher inventory-related charges, higher manufacturing overhead costs, as well as the impact of the Warrants”.
Who Pays
Customer A was 53% of third-quarter revenue, against 23% a year earlier, and 40% of nine-month revenue, about $514 million, by our arithmetic. It was also 58% of receivables on 30 September, as we reported on 4 November.
The 10-Q counts direct customers, and it says “Certain of the customers listed above are manufacturing partners that purchase the Company’s products on behalf of the Company’s end customers”. The 2025 10-K counted end customers instead: “one end customer represented more than 70% of our revenue; the top three end customers represented an aggregate of approximately 86% of our revenue”.
Neither filing names the customer. The 10-K lists the concentration as a risk factor, and the 10-Q says there have been “no material changes” to those risk factors.
How the Amazon Warrants Reduce Revenue
The 10-K says Astera issued warrants in October 2022 and October 2023 to Amazon NV Investment Holdings LLC, and in February 2026 signed a third with Amazon.com NV Investment Holdings LLC for up to 3,262,299 shares at $142.82. The release lists a “warrant agreement with Amazon” among its collaborations. The shares vest as the holder and its affiliates hit tranches of purchases.
Because Astera gets nothing distinct for the warrants, it books their fair value as a reduction of revenue as products ship. The 10-K says this “reduces the reported gross profit and gross margin in the periods the related revenue is recognized”. The third-quarter reduction was $18.1 million, about 3.0% of revenue before the charge, by our arithmetic, as our warrant piece covered.
The 10-Q adds a count our earlier piece did not have: 1,866,936 warrant shares were vested and exercisable at 30 September, up from 1,165,513 at the end of 2025. That is 33.5% of the 5,578,474 maximum across the three warrants, by our arithmetic. The 10-Q says “There were no Warrants exercised by the Holder as of September 30, 2026”.
The three warrants carry a maximum grant-date fair value of $295.5 million, and about $38.1 million had been recognised against revenue from 2023 through September 2026, by our arithmetic from the filings. The 10-Q says the rest of the value that is probable of vesting “could occur until January 2, 2033”.
What the Guidance Says
For the fourth quarter Astera guides revenue of $730 million to $750 million, a GAAP gross margin of approximately 72% and GAAP operating expenses of approximately $273 million to $279 million, according to the release. With the nine-month total, that would make 2026 revenue about $2.02 billion to $2.04 billion, about 2.4 times 2025, as we calculated on 3 November.
As we read the filings, Astera’s model has two moving parts: cost of revenue rose as a share of each dollar, to 27.7 cents from 23.8 cents, while research and development and overhead fell as a share, so operating income per dollar rose, by our arithmetic.
As we read the 10-Q and 10-K together, the exposure sits in who pays: Customer A was 53% of third-quarter revenue, and the 2025 10-K put one end customer at more than 70% of that year’s revenue, with neither filing naming it.
Astera Labs, 2025 Form 10-K
“reduces the reported gross profit and gross margin in the periods the related revenue is recognized”
Three Implications
FOR THE PRODUCT LINE The release says Scorpio fabric switches became the largest product family by revenue; the filings do not give revenue by family.
FOR THE CUSTOMER BASE Customer A was 53% of third-quarter revenue and 58% of receivables on 30 September, according to the 10-Q.
FOR THE WARRANTS 1,866,936 warrant shares were vested at 30 September, 33.5% of the 5,578,474 maximum, by our arithmetic from the filings.
The framework says: “I described AI as a multi-layered stack, almost like a layered cake of interconnected technologies and infrastructure.”
As we read it, Astera sits in the connections between layers: its retimers, cable modules and fabric switches link accelerators, CPUs and memory, and its filings show how a supplier in that position earns and where it is concentrated. The framework does not discuss Astera Labs.
The filings do not give revenue by product family, so Scorpio’s share is not known beyond the company’s statement that it is the largest. They do not name Customer A or the end customer behind more than 70% of 2025 revenue, and the 10-Q does not say whether the warrant holder is one of the lettered customers. Whether the remaining warrant shares vest depends on future purchases.
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Astera Labs turned 72.3 cents of each third-quarter sales dollar into gross profit and 30.6 cents into operating income, by our arithmetic from its 10-Q. One direct customer was 53% of revenue, and warrants tied to Amazon purchases reduced revenue by $18.1 million in the quarter, with 33.5% of the warrant shares vested by 30 September, by our arithmetic.
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A note on sourcing. Financial figures, customer percentages, warrant terms and quotations are from Astera Labs’ Form 10-Q for the third quarter of 2026, filed with the SEC on 4 November 2026, its 2025 Form 10-K and its 3 November 2026 earnings release. Figures attributed to earlier pieces come from those pieces, which cite the same filings. Per-dollar splits, shares and totals are our arithmetic.
Gennaro Cuofano is a CRO and tech executive who has worked in AI since late 2015, starting with bringing NLP, natural-language generation, voice and chatbot products to the marketing industry. His background is in law and finance: he holds a Master's degree in Law and an International MBA with an emphasis on corporate finance (LUISS Business School and the University of San Diego, 2012), and worked as a financial analyst at a real-estate investment firm in San Diego and as an assistant controller. His work focuses on business model strategy, business engineering and, more broadly, structural analysis: how companies make money, read from their own filings. He created FourWeekMBA and leads research there and at The Business Engineer, his newsletter on AI and business strategy, with over 95,000 subscribers and more than 1,000 published analyses. His writing has also appeared on Entrepreneur (for example, How to Digitize a Family Business in Europe) and HackerNoon. Find him on LinkedIn and Substack. See how we source.
