FORM Stock: Insider Activity, Filings & Research

FormFactor, Inc. (FORM) — Drillr’s hub for FORM insider activity, SEC filings, earnings signals and AI research. Over the trailing 3 months, FORM insiders filed 0 open-market buys and 22 sales (SEC Form 4).

Sentiment

0/100

Buys (3m)

Sells (3m)

Net (3m)

-$5.6M

Insider trades by month Buys Sells

Dec

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May

Context3-month price +36.1%Institutions accumulating (13F)

Date	Insider	Type	Shares	Price
May 22, 2026	Obregon-Jimenez Rebecadirector	Sell	3,828	$126.47
May 21, 2026	St Dennis Thomasdirector	Sell	1,000	$115.84
May 21, 2026	WHITE BRIAN Cdirector	Sell	3,250	$126.00
May 19, 2026	WHITE BRIAN Cdirector	Grant	1,347	—
May 19, 2026	Obregon-Jimenez Rebecadirector	Grant	1,347	—
May 19, 2026	STEVEN-WAISS KELLEYdirector	Grant	1,347	—
May 19, 2026	Titinger Jorgedirector	Grant	1,347	—
May 19, 2026	Rhodes Sheridirector	Grant	1,347	—
May 19, 2026	St Dennis Thomasdirector	Grant	1,347	—
May 15, 2026	STEVEN-WAISS KELLEYdirector	Sell	5,400	$125.60
May 15, 2026	Titinger Jorgedirector	Sell	4,009	$128.78
May 14, 2026	SLESSOR MIKEdirector, officer: CEO	Sell	2,984	$124.71
May 14, 2026	SLESSOR MIKEdirector, officer: CEO	Sell	1,388	$125.58
May 14, 2026	SLESSOR MIKEdirector, officer: CEO	Sell	700	$122.84
May 14, 2026	SLESSOR MIKEdirector, officer: CEO	Sell	1,300	$123.72

Source: FORM SEC Form 4 filings, latest May 22, 2026. For informational purposes only — not investment advice.

Overview

FormFactor, Inc. (NASDAQ:FORM) is a specialized semiconductor test equipment company founded in 1993 and headquartered in Livermore, California. The company went public in 2003 and has established itself as a leading provider of probe cards and test systems that enable semiconductor manufacturers to verify the functionality of their chips before packaging. FormFactor operates through two primary business segments: Probe Cards and Systems, serving semiconductor companies, foundries, and research institutions worldwide. The company has positioned itself at the critical intersection of semiconductor manufacturing and testing, providing essential tools that ensure chip quality and performance across various applications from mobile processors to advanced AI chips.

Business

FormFactor operates in the semiconductor test equipment industry, providing critical testing solutions that verify chip functionality during the manufacturing process. The company's core business revolves around probe cards and test systems that are essential for semiconductor quality assurance. Probe cards are sophisticated testing devices that make electrical contact with semiconductor wafers to test individual chips before they are cut and packaged. These consumable products must be replaced regularly due to wear from repeated testing cycles. FormFactor's probe cards test various semiconductor types including systems-on-chip, mobile application processors, microprocessors, graphics processors, memory chips (DRAM, NAND flash, NOR flash), and radio frequency devices. The probe card technology is particularly critical for advanced applications like High Bandwidth Memory (HBM) used in AI and data center applications. Test systems include probe stations, metrology systems, thermal systems, and cryogenic instruments used by semiconductor design engineers and research institutions. These systems enable precise measurement and characterization of semiconductor devices during development and production. The company also provides analytical probes for device characterization, failure analysis, and prototype debugging. The business operates through two segments with distinct revenue contributions: 1. Probe Cards Segment (approximately 80% of total revenue): Includes foundry and logic probe cards (~50% of total revenue), DRAM probe cards (~25-30%), and flash memory probe cards (~2-4%) 2. Systems Segment (approximately 20% of total revenue): Encompasses probe stations, metrology equipment, and specialized testing instruments FormFactor serves semiconductor integrated device manufacturers, foundries, fabless semiconductor companies, universities, and research institutions globally, with significant exposure to markets in Taiwan, South Korea, China, Japan, and the United States.

Revenue model

FormFactor generates revenue through multiple business models centered around semiconductor testing solutions. The primary revenue stream comes from product sales of probe cards, which are consumable items that require regular replacement due to physical wear from repeated testing cycles. This creates a recurring revenue model as customers must continuously purchase new probe cards to maintain their testing operations. The company's customers are primarily semiconductor manufacturers, foundries, and fabless chip companies who pay for these testing solutions to ensure their chips meet quality and performance specifications before packaging and shipment. Revenue is also generated through service fees for on-site maintenance, training, and technical support services. Several factors influence FormFactor's margins and profitability. Product mix significantly impacts gross margins, with foundry and logic probe cards typically commanding higher margins than DRAM probe cards. The company's margins benefit from advanced packaging trends that increase test complexity and probe card intensity by 20-30% per design. Technology transitions such as the shift to HBM4 memory and advanced AI chips create opportunities for higher-value, more complex probe cards. Margin pressures come from competitive dynamics in the cyclical semiconductor industry, where downturns can compress pricing. Geopolitical factors including U.S.-China trade restrictions and tariffs create both revenue headwinds and cost pressures, with recent tariffs estimated to impact margins by one percentage point. Manufacturing costs and supply chain disruptions can also affect profitability, while the company's ability to achieve economies of scale at higher revenue levels (targeting $850 million revenue for optimal margins) influences overall financial performance. The semiconductor industry's cyclical nature means demand fluctuates with end-market conditions in mobile, PC, data center, and automotive segments, directly affecting FormFactor's revenue and margin stability.

Competitive moat

FormFactor's competitive moat is moderately strong, built primarily on technical expertise and customer switching costs rather than traditional economic moats. The company's probe card technology requires deep engineering knowledge and close collaboration with semiconductor manufacturers to develop custom solutions for specific chip designs. This creates meaningful barriers to entry as competitors need substantial R&D investment and years of relationship building to replicate FormFactor's capabilities. The consumable nature of probe cards provides some recurring revenue protection, as customers who have qualified FormFactor's products face switching costs and risks in changing suppliers mid-production cycle. Additionally, the company's established relationships with major semiconductor foundries and memory manufacturers create customer stickiness, particularly in critical applications like HBM where qualification cycles are lengthy and expensive. However, FormFactor's moat faces several vulnerabilities. The semiconductor test equipment market is competitive with established players like Tokyo Electron and other specialized probe card manufacturers. The company's technology differentiation, while meaningful, is not insurmountable - competitors can and do develop competing solutions. Customer concentration risk is notable, particularly in HBM where FormFactor is heavily dependent on one major customer, reducing negotiating power. The cyclical nature of the semiconductor industry limits the sustainability of any competitive advantages, as downturns can compress margins and force customers to seek lower-cost alternatives. Geopolitical risks and export restrictions can also undermine market position, as seen with China-related revenue impacts. While FormFactor has established market leadership in certain segments, the technical barriers are not permanent, and the company must continuously invest in R&D to maintain its competitive position. The moat is best characterized as moderate - meaningful but not impregnable.

Risks & safety

FormFactor demonstrates a solid margin of safety with strong financial fundamentals, though valuation metrics suggest limited upside at current levels. • Liquidity and Solvency: Strong balance sheet with $130-190 million in cash, current ratio of 4.4x, and minimal debt (debt-to-equity ratio of 0.04). No meaningful solvency risk with positive free cash flow generation. • Valuation Metrics: Currently expensive with P/E ratio of 86x (Q1 2025), though full-year 2024 P/E of 51x is more reasonable. EV/EBITDA of 44x appears elevated relative to cyclical earnings power. • Operational Cash Generation: Positive operating cash flow of $117 million (2024) and free cash flow of $79 million demonstrates underlying business health despite cyclical pressures. • Cyclical Considerations: Company is navigating a cyclical trough with Q1 2025 revenues of $171 million below peak levels, suggesting current earnings may not represent normalized profitability. Management targets $850 million revenue with $2 EPS in favorable cycles. • Risk Factors: Geopolitical exposure to China trade restrictions, customer concentration in HBM segment, and semiconductor industry cyclicality create earnings volatility risks. The margin of safety appears adequate for patient investors given the strong balance sheet and cyclical positioning, but current valuation multiples offer limited downside protection.

Recent development

Over the past few years, FormFactor has executed several strategic pivots to capitalize on emerging semiconductor trends and diversify its revenue base. The company has significantly expanded its presence in the High Bandwidth Memory (HBM) market, with HBM revenue growing from minimal levels to over $43 million in Q2 2024, representing nearly half of total DRAM revenue. This growth is driven by AI and data center demand, with FormFactor positioning itself for the transition from HBM3e to HBM4 technology expected in late 2025. The company has made strategic investments in advanced packaging technologies, recognizing that chiplet architectures and advanced packaging increase probe card test intensity by 20-30% per design. FormFactor has also entered the emerging Co-Package Optics (CPO) market, targeting late 2025/early 2026 for volume production with over 100 systems already deployed in customer labs and pilot lines. Strategic partnerships and acquisitions have been key to FormFactor's evolution. The company acquired a 20% stake in FICT Limited, a multilayer organic substrates supplier, to strengthen its supply chain capabilities. Additionally, FormFactor formed a technology partnership with Advantest Corporation to enhance its testing solutions portfolio. To address market cyclicality and geopolitical challenges, FormFactor has focused on customer diversification, working to qualify with all three major DRAM manufacturers rather than being over-indexed to a single HBM customer. The company has also implemented organizational restructuring to consolidate global operations and reduce annual costs by $25-30 million while maintaining R&D investment levels. Geographic and regulatory adaptation has been necessary due to U.S.-China trade restrictions, with the company estimating mid-single-digit million-dollar revenue reductions from recent tariffs while maintaining a wait-and-see approach on manufacturing footprint changes.

FORM company profile · for informational purposes only — not investment advice.

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