CBRS · CIK 0002021728
What Cerebras Systems Inc. told the SEC could break it.
Cerebras's disclosures describe a company squeezed by concentration at both ends of its business, with geopolitics running through the middle. Its revenue depends heavily on a few UAE-affiliated customers — G42 was 24% of fiscal 2025 revenue (85% the year before), and MBZUAI was 77.9% of accounts receivable — which collides directly with U.S. export controls (EAR/BIS, OFAC) that restrict shipping AI technology to certain countries and entities. On supply, its only source of wafers is TSMC in Taiwan, with no long-term allocation commitments, leaving its production exposed to a region of high geopolitical tension and natural-disaster risk. Purchasing beyond TSMC is concentrated too, with two suppliers accounting for 19% and 14% of fiscal 2025 purchases.
4 self-disclosed vulnerabilities, pulled from its own filings, each in the company’s words, with the source. This is the risk register almost nobody reads.
In its own words
What could break it.
Customer concentration
- MBZUAI 77.9% of AR; G42 24% of FY2025 revenuehigh
Extreme customer concentration in UAE-affiliated customers: MBZUAI was 77.9% of accounts receivable at FY2025 (G42 was 91% a year earlier); G42 was 24% of FY2025 revenue (85% in FY2024).
“Further, as of December 31, 2025, one customer (MBZUAI) accounted for 77.9% of our accounts receivable balance. As of December 31, 2024 , one customer (G42) accounted for 91.0% of our accounts receivable balance.”
SEC filing →As of 2026
Regulatory & policy
- US export controls (EAR/BIS/OFAC) on AI technologyhigh
AI chips/technology subject to EAR (BIS) and OFAC sanctions restricting export/re-export to restricted countries and entities; material given UAE-customer concentration and the CFIUS-reviewed G42 investment.
“U.S. export control laws and regulations restrict or prohibit the export, re-export, and in-country transfer of certain commodities, software, and technology (including certain AI technologies) to restricted countries, governments, persons, and entities.”
Sole-source dependency
- TSMC sole source of wafers (Taiwan)high
TSMC is Cerebras's sole source of wafers, with no long-term supply/allocation commitments; TSMC sits in geopolitically tense, disaster-prone Taiwan — a China-Taiwan conflict or disruption would cut its only wafer supply.
“Additionally, many of our suppliers, including our sole source of wafers, TSMC, are located in areas of high geopolitical tension, such as Taiwan and South Korea, or in areas prone to natural disasters such as earthquakes and typhoons.”
Supplier concentration
- two suppliers 19% & 14% of FY2025 purchasesmedium
Beyond TSMC, purchasing is concentrated: two suppliers accounted for 19% and 14% of total purchases in FY2025; certain materials available from a limited number of suppliers.
“Two suppliers accounted for 19% and 14% of total purchases for the year ended December 31, 2025 . Three suppliers accounted for 21% , 14% , and 11% of total purchases for the year ended December 31, 2024 .”
SEC filing →As of 2026
The hidden graph
Who it depends on, and who depends on it.
Relationships surfaced from filings, including ones disclosed by the other side, which is how the non-obvious ones come to light.
Its customers
Mohamed bin Zayed University of Artificial Intelligence (MBZUAI)
“Further, as of December 31, 2025, one customer (MBZUAI) accounted for 77.9% of our accounts receivable balance. As of December 31, 2024 , one customer (G42) accounted for 91.0% of our accounts receivable balance.”
Cited →G42 (Group 42 Holding Ltd)
“G42 accounted for 24% and 85% of our total revenue for the years ended December 31, 2025 and 2024, respectively.”
Cited →
Its suppliers
Taiwan Semiconductor Manufacturing Company (TSMC)
“Additionally, many of our suppliers, including our sole source of wafers, TSMC, are located in areas of high geopolitical tension, such as Taiwan and South Korea, or in areas prone to natural disasters such as earthquakes and typhoons.”
Cited →
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