What Ultra Clean (UCTT) Said on Its Q3 Earnings Call

Key Points

• Record Q3 performance: Ultra Clean reported $759 million in revenue, up 48.8% year over year, while non-GAAP EPS rose to $1.15 and margins improved. Results exceeded the high end of guidance, driven by semiconductor demand related to AI infrastructure, advanced packaging and node transitions.
• Expansion to meet demand: The company is adding clean-room, welding and vertically integrated manufacturing capacity across Malaysia, the Philippines, Singapore and the Czech Republic. Ultra Clean expects approximately $4 billion of capacity by the first quarter and plans to invest $80 million to $100 million through 2027–2028.
• Positive outlook, with supply-chain and cash-flow pressures: Q4 guidance calls for $800 million to $860 million in revenue and non-GAAP EPS of $1.11 to $1.35. Inventory increased to $723.3 million as the company built safety stock amid component constraints, contributing to negative quarterly operating cash flow of $42.3 million.

Ultra Clean NASDAQ: UCTT reported record third-quarter 2026 revenue and earnings that exceeded the high end of its guidance, citing strong semiconductor demand tied to artificial intelligence infrastructure, advanced packaging and node transitions.

Revenue totaled $759 million in the third quarter, up 17.7% sequentially and 48.8% from a year earlier, according to CFO Mike Keogh. On a non-GAAP basis, gross margin rose 60 basis points sequentially to 17.3%, operating margin increased to 9.0% from 7.0% in the second quarter, and diluted earnings per share rose to $1.15 from $0.70.

“Revenue from both product and service came in ahead of our expectations,” CEO James Xiao said. “Our bottom line also outperformed, reflecting our continued focus on improving profitability.”

Semiconductor Demand Drives Product Growth

Semiconductor products represented 86% of total revenue during the quarter, including 52% from foundry and logic customers and 34% from memory. Services contributed 10% of revenue, while non-semiconductor markets accounted for the remaining 4%. Ultra Clean’s two largest customers accounted for 61% of quarterly revenue.

Products revenue increased 19.1% sequentially to $681.9 million, driven primarily by demand in etch and deposition applications supporting gate-all-around technology and high-bandwidth memory. Services revenue rose 6.7% to $77.1 million, with strength across OEM and fab customers.

Keogh said services revenue historically trails products revenue because service activity is linked to wafer starts. The company expects service revenue to rise incrementally as new U.S. fabs come online, with a larger contribution anticipated as wafer starts increase through 2027 and 2028.

Xiao said AI investment continues to support capacity additions across leading-edge foundry, DRAM, high-bandwidth memory and advanced-packaging markets. Based on customer visibility, Ultra Clean now expects wafer fab equipment spending in 2027 to exceed $200 billion.

During the question-and-answer session, Xiao said the company’s planned $5 billion revenue run-rate capacity would correspond to roughly $250 billion in wafer fab equipment spending, rather than the approximately $330 billion estimated by one analyst. He said the company sees no reason to disagree with analyst expectations for about $250 billion in 2028 WFE spending, while noting customers have not provided a specific industry spending figure beyond 2027.

Capacity Additions and Supply-Chain Strategy

Ultra Clean has continued to expand manufacturing capacity under its UCT 3.0 strategy, which includes ramp readiness, new-product development and digital transformation initiatives. Xiao said a 26,000-square-foot clean-room expansion in Malaysia came online earlier than expected and helped the company outperform in the third quarter.

The company expects to double weldment capacity in Cebu, Philippines, over the next several quarters and add clean-room capacity in Singapore and the Czech Republic. It also expects to double vertically integrated manufacturing capacity in Malaysia and Thailand next year.

Keogh said Ultra Clean now expects to have approximately $4 billion in capacity by the first quarter, with further footprint optimization and utilization improvements possible through 2027. The company also has an estimated 15% to 20% of burst capacity to bridge to its next expansion phase.

Growing beyond $5 billion will require capacity outside the company’s current footprint, Keogh said. Ultra Clean anticipates investing roughly $80 million to $100 million through 2027 and 2028, with investments paced to customer demand and potential locations discussed with customers.

The company said it has been building inventory, pre-ordering critical components and maintaining elevated safety stock to manage supply-chain constraints. Inventory rose $93.4 million sequentially to $723.3 million, contributing to negative operating cash flow of $42.3 million during the quarter.

Xiao said mass-flow-controller constraints could persist for another quarter or two, but he expects the industry to address the issue collectively. He said Ultra Clean did not miss a single required customer module during the quarter and was able to handle additional demand customers placed over the past two quarters.

Margins, New Programs and Outlook

Products gross margin improved to 15.9% from 15.1% in the second quarter, while services margin increased to 30.1% from 28.9%. Keogh said the gains reflected higher volume and stronger contributions from higher-margin product lines.

The company continues to target a 20% gross margin at $4 billion in revenue. Keogh said the target is expected to be supported by improved utilization, more higher-value engineered products, vertical integration and increased production in lower-cost regions, though newly opened capacity may create temporary margin pressure.

Ultra Clean also reported eight new program wins across etch, atomic layer deposition, physical vapor deposition and lithography applications. Xiao said the programs span gas-delivery, thermal and other critical subsystems, while a similar number of programs are in development and qualification across etch, deposition, lithography and metrology.

The company’s balance sheet included $270.9 million in cash at quarter-end, compared with $255.9 million at the end of the prior quarter. Ultra Clean sold 432,000 shares through its at-the-market equity program during the third quarter for approximately $34 million in net proceeds. In the first week of the fourth quarter, it sold another 2.2 million shares, generating $169.1 million in net proceeds, and used part of the proceeds to pay off its revolving credit facility balance.

For the fourth quarter, Ultra Clean forecast revenue of $800 million to $860 million and non-GAAP diluted earnings per share of $1.11 to $1.35, based on approximately 48.9 million diluted shares.

About Ultra Clean (NASDAQ:UCTT)

Ultra Clean Holdings, Inc NASDAQ: UCTT provides critical subsystems, components and services used in the production of semiconductor and other high-technology products. The company designs and manufactures gas delivery systems, fluid delivery systems, precision-machined components, process modules and other equipment used by semiconductor capital-equipment manufacturers.

Ultra Clean also provides contract manufacturing, analytical laboratory, equipment installation, repair, refurbishment and tool-maintenance services.

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