FORM · CIK 1039399
What FormFactor, Inc. told the SEC could break it.
FormFactor's risks sit at the intersection of a fragile supply chain and trade policy. It sources key components for its semiconductor probe cards — printed circuit board assemblies, plating materials and ceramic substrates — from sole or limited suppliers, and in some cases has no alternative source, so the loss of a supplier or a raw-material shortage could delay production. Trade policy hits it on two fronts: tariffs are already a realized cost, cutting roughly 1.4% from its Probe Cards segment gross margin in fiscal 2025, while U.S. export controls constrain its ability to sell into China, which was about 7% of fiscal 2025 revenue (down from 14% the prior year).
3 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.
Regulatory & policy
- U.S.–China export controls on sales into Chinamedium
Roughly 7% of FormFactor's FY2025 revenue (14% in FY2024) came from customers in China, a region subject to expanded U.S. export-license requirements; escalating U.S.–China trade tensions, technology-transfer restrictions and export controls could further restrict FormFactor's ability to sell into and operate in the Chinese market.
“approximately 7% of our fiscal 2025 revenue and 14% of our fiscal 2024 revenue was derived from sales to customers in China, which was one of the regions subject to the expanded export license requirements imposed by the United States government.”
- Tariffs raising probe-card manufacturing costs (1.4% gross-margin impact)medium
Tariffs are a realized, quantified cost: higher manufacturing costs from increased tariff costs cut into the Probe Cards segment's gross margin in fiscal 2025 (a stated ~1.4% gross-margin impact), eroding profitability even amid record revenue.
“Probe Cards — Gross profit and gross margin in the Probe Cards segment decreased in fiscal 2025 compared to fiscal 2024, despite the record revenue levels primarily due to higher manufacturing costs, which included increased costs for tariffs, partially offset by a favorable product mix and favorable factory utilization with the increased volumes.”
Sole-source dependency
- Sole/limited-source components — PCB assemblies, plating materials, ceramic substrateshigh
FormFactor sources key probe-card components and materials — printed circuit board assemblies, plating materials and ceramic substrates — from sole or limited suppliers, and in some cases no alternative source is currently available, so loss of a supplier or raw-material scarcity could cause production delays.
“We obtain some of the components and materials used in our products, such as printed circuit board assemblies, plating materials and ceramic substrates, from a sole source or a limited group of suppliers, and in some cases alternative sources are not currently available.”
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
“The following customers represented 10% or more of our revenues: Fiscal Year Ended December 27, 2025 December 28, 2024 December 30, 2023 SK hynix Inc. 22.9 % 18.9 % * Intel Corporation * 14.6 % 17.1 %”
Cited →Taiwan Semiconductor Manufacturing Company Ltd.
“SK hynix Inc. 19.2 % 24.5 % 25.0 % 23.3 % 22.0 % 18.1 % 19.5 % 15.5 % Intel Corporation * * 12.4 % 12.0 % * 17.1 % 16.7 % 15.7 % Taiwan Semiconductor Manufacturing Company Ltd. * * 10.4 % * * * * * Samsung Electronics Co., Ltd. * * * * * * * 12.4 %”
Cited →Samsung Electronics Co., Ltd.
“SK hynix Inc. 19.2 % 24.5 % 25.0 % 23.3 % 22.0 % 18.1 % 19.5 % 15.5 % Intel Corporation * * 12.4 % 12.0 % * 17.1 % 16.7 % 15.7 % Taiwan Semiconductor Manufacturing Company Ltd. * * 10.4 % * * * * * Samsung Electronics Co., Ltd. * * * * * * * 12.4 %”
Cited →SK hynix Inc.
“The following customers represented 10% or more of our revenues: Fiscal Year Ended December 27, 2025 December 28, 2024 December 30, 2023 SK hynix Inc. 22.9 % 18.9 % * Intel Corporation * 14.6 % 17.1 %”
Cited →
Its suppliers
FICT Limited
“In February 2025, we acquired a 20% equity interest in FICT Limited (“FICT”). Headquartered in Nagano, Japan, FICT is a provider of semiconductor test and high-performance computing industries with complex multi-layer organic substrates, printed circuit boards, and related leading-edge technologies and services.”
Cited →
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