0001628280-26-013231
SEC filingRevenue grew 15.2% but gross margin fell 570bps on mix and inventory provisions, resulting in lower net income and negative free cash flow.
ACM Research supplies advanced, innovative capital equipment for the global semiconductor industry. The company focuses on developing differentiated process solutions that address yield-critical and performance-sensitive steps, helping customers manage cost of ownership, throughput, and environmental considerations.
The Business section breaks out revenue into three categories: (1) Single wafer cleaning, Tahoe and semi-critical cleaning equipment, representing 69.5% of total revenue in 2025; (2) ECP (front-end packaging), furnace and other technologies, at 22.1%; and (3) Advanced packaging (excluding ECP), services and spares, at 8.4%. These categories reflect the company's product portfolio and aftermarket support.
Key proprietary technologies include SAPS (Space Alternated Phase Shift), TEBO (Timely Energized Bubble Oscillation), and Tahoe for wet cleaning. Platforms include Ultra ECP ap (advanced packaging plating), Ultra ECP map (multi-anode partial plating), Ultra fn Furnace (vertical furnace), Ultra Pmax PECVD, and Ultra Track. Advanced packaging products include Ultra C Coater, Ultra C Developer, Ultra C PR Megasonic-Assisted Stripper, Ultra C Scrubber, Ultra C Thin Wafer Scrubber, and Ultra C Wet Etcher.
ACM markets through a direct sales force and third-party representatives in mainland China, the United States, Southeast Asia, and Europe. Substantially all sales have been to customers in mainland China, with efforts to expand elsewhere. Revenue by customer type: Foundry/Logic/Other 59%, Memory 27%, Advanced Packaging/Wafer Processing 14% in 2025. No specific customer concentration is disclosed in this section, but the company notes it has delivered over 1,435 tools since 2009.
Competitors in wafer cleaning, plating, and furnace include Lam Research, NAURA, SCREEN, SEMES, Tokyo Electron, and Kokusai. For PECVD and Track, additional competitors include Applied Materials and Suzhou Jingtuo. The filing notes that competitors may have greater resources, broader product offerings, and more established credibility.
The company's strategy includes developing differentiated process solutions, adopting a multi-product approach across front-end and back-end steps, using a demo-to-sales process to build referenceable customers, and expanding geographically beyond mainland China.
As of December 31, 2025, ACM had 2,513 full-time equivalent employees: 196 in administration, 365 in manufacturing, 1,228 in R&D, and 724 in sales, marketing, and customer services. 2,357 employees are in mainland China and Taiwan, 127 in Korea, and 29 in the United States. None are unionized.
ACM Research's revenue for fiscal 2025 grew 15.2% to $901.3 million from $782.1 million in 2024, driven by strong demand from mainland China-based customers investing in mature process nodes and new product ramps. However, gross profit increased only 2.2% to $400.1 million, and gross margin contracted sharply by 570 basis points to 44.4% from 50.1%. Management attributed the decline to an unfavorable product mix—particularly higher sales of lower-margin advanced packaging tools—and a $15.5 million increase in inventory provisions. Operating expenses rose 20.8% to $290.6 million, outpacing revenue growth, led by a 37.5% surge in R&D spending ($145.0 million, or 16.1% of revenue) as the company invested in new technologies like PECVD and Track. As a result, operating income fell 27.5% to $109.4 million, and operating margin dropped to 12.2% from 19.3%. Net income attributable to ACM Research declined to $93.7 million (10.4% of revenue) from $103.2 million (13.2% of revenue) in 2024, reflecting lower operating income and a swing to net other expense.
Revenue by product line showed clear mix shifts. The core single wafer cleaning, Tahoe and semi-critical cleaning equipment line grew a modest 8.1% to $626.0 million, but its share of total revenue fell from 74% to 69%. In contrast, the ECP (front-end and packaging), furnace and other technologies segment surged 32.1% to $199.6 million, reflecting successful penetration of new product categories. Advanced packaging (excluding ECP), services & spares jumped 45.3% to $75.8 million, albeit from a smaller base. Geographically, mainland China accounted for 99.6% of revenue, up from 99.2% in 2024, underlining the company's heavy concentration in that region. Shipments—a non-GAAP metric—declined 12.2% to $854 million, suggesting near-term revenue headwinds as first-time tool shipments fell 17.1% to $388 million.
Management did not provide specific financial guidance for 2026, but outlined strategic priorities: continued investment in R&D to support new products (PECVD, Track, furnace), expansion of sales and marketing for North American and European markets, and managing through U.S. export control restrictions on ACM Shanghai and ACM Korea. Gross margin is expected to remain in the 42%–48% range for the foreseeable future, though mix and inventory provisions may cause volatility. The company believes existing cash, cash flows, and bank borrowings will be sufficient to meet anticipated liquidity needs. However, the $690.7 million boost in cash and time deposits to $1.13 billion was largely from financing activities ($742.5 million), including ACM Shanghai's private offering of $623 million, while operations consumed $10.3 million of cash. Free cash flow was negative $67.1 million, highlighting the need for careful working capital management.
The most material risks center on escalating U.S.-China trade tensions and export controls. ACM Shanghai and ACM Korea were added to the BIS Entity List in December 2024, prohibiting worldwide supply of U.S.-origin items without a BIS license. This directly impacts procurement of components and technology for manufacturing. Concurrently, expanded EAR rules (2022–2025) impose license requirements with presumption of denial for advanced semiconductor equipment to China, and Japan/Netherlands have aligned with similar controls. The U.S. has imposed 145% tariffs on Chinese goods (125% reciprocal plus 20% fentanyl-related), with potential Section 232 tariffs on semiconductors under investigation. These measures threaten supply chain continuity, increase costs, and may reduce customer demand. China's government retains broad authority to intervene in ACM Shanghai's operations, including potential new requirements for U.S. listing permissions, IP/data security regulations, and anti-monopoly reviews. Currency controls and statutory reserve requirements restrict fund repatriation from ACM Shanghai to ACM Research, limiting liquidity and dividend capacity.
Customer concentration is acute: four customers generated 52.2% of 2025 revenue. Loss of any key customer would materially impact revenue. The company depends on single-source suppliers (e.g., Ninebell for robotic subsystems) and third-party manufacturers; Entity List restrictions may force costly supplier transitions. Semiconductor industry cyclicality poses multi-year demand risk. The long sales cycle (6–24 months) and reliance on non-binding customer forecasts create revenue unpredictability. ACM Shanghai's STAR Listing (Nov 2021) and subsequent private offering (Sep 2025) diluted ACM Research's ownership to 74.6%, introducing governance conflicts and separate management fiduciary duties.
ACM faces intense competition from larger, better-resourced incumbents. Success depends on widespread adoption of its SAPS, TEBO, Tahoe, ECP, furnace technologies. Rapid technological change could render products obsolete. Intellectual property protection in China is historically weak, and the majority of IP is held by ACM Shanghai, increasing vulnerability to infringement.
Potential need for additional capital, coupled with restricted access to ACM Shanghai's funds, creates financing risk. Global economic slowdown, inflation, and geopolitical unrest could reduce semiconductor capital spending. The company has never paid dividends and does not expect to do so. Stock price volatility is heightened by the dual-class structure (Class B with 20 votes per share) and the novel nature of a U.S.-listed parent with a STAR Market subsidiary.
ACM Research's operating cash flow (CFO) declined sharply to $82.2 million in 2025 from $113.4 million in 2024, a 27.5% drop. This decline occurred despite net income growth, indicating a significant build-up in working capital (likely receivables and inventory) that consumed cash. Capital expenditures rose to $37.5 million (from $30.0 million), reflecting continued investment in capacity. Free cash flow (CFO minus capex) was $44.7 million, down from $83.4 million in 2024. The company did not repurchase shares or pay dividends in either year, so all free cash flow was retained. The cash flow statement shows no major one-time items; the primary anomaly is the working capital drag that reversed the prior year's strong cash generation. Investors should monitor whether working capital efficiency improves in 2026.