Ultra Clean Holdings (UCTT) Risk Analysis

Inventory is one of the largest assets on our balance sheet, representing 22.6% of our total assets as of December 26, 2025. Effective management of raw materials, work-in-process and finished goods is imperative to keep inventory costs down and maintain or improve gross margins, all the while meeting changing customer requirements. The industries we serve have been highly cyclical, which makes accurately forecasting customers' needs difficult. Although we seek to maintain sufficient inventory of materials to guard against interruptions in supply and meet our customers' needs, we may experience shortages of certain key materials, particularly in times of high industry demand. We also often face long lead times from our suppliers, which may be longer than the lead times provided to us by our customers. If we underestimate customer demand or if such demand exceeds our manufacturing capacity or available raw materials, we may lose sales opportunities and market share and potentially damage our relationships with customers. An overestimation of customer demand may result in allocation of resources for products that we may not be able to sell, and we may be forced to hold excess or obsolete inventory. Our products can become obsolete when customers change their specifications, or become excess inventory due to a decrease in demand. Furthermore, if market prices drop below the prices at which we value our inventory, we would need to take a charge for a reduction in inventory values in accordance with the applicable accounting rules. Any unexpected changes in demand or increases in manufacturing costs that cause us to take additional charges for un-saleable, obsolete or excess inventory, or to reduce inventory values, would adversely affect our results of operations. We hold our inventory at various manufacturing sites around the globe and many of these sites have more than one warehouse. We rely upon our IT systems and internal controls to accurately and timely manage, store and replenish inventory, complete and track customer orders, coordinate sales activities across all of our products, and maintain and report vital data and information. A disruption in our IT systems or a failure of our internal controls could result, and have resulted in the past, in delays in receiving inventory and supplies, delays in filling customer orders, incorrect inventory counts, over or under stocking, and loss of inventory.

We have had to qualify as a supplier, and maintain that status, for each of our customers. This is often a lengthy process that normally involves customer inspection and approval of our engineering, documentation, manufacturing and quality control procedures before the customer will place volume orders. Such qualification requirements limit our ability to quickly add new customers to offset any loss of, or reduction in sales to, existing customers. Moreover, if we fail to maintain our status as a qualified supplier to any of our customers, such customer could cancel its orders or otherwise terminate its relationship with us.

In addition to any litigation related to our intellectual property rights, we have been in the past and may in the future be named as a defendant in other lawsuits and regulatory actions relating to our business, such as commercial contract claims, environmental compliance claims, employment claims, class action litigations, and tax examinations, any one of which may expose us to significant damages and reputational harm. The outcome of such litigations and regulatory proceedings is difficult to predict. An unfavorable outcome could have a material adverse effect on our business, including limiting our ability to engage in certain business activities. In addition, such proceedings are often expensive, time-consuming and disruptive to normal business operations and require significant attention from our management. For example, we incurred costs responding to a subpoena received from the SEC related to the material weaknesses identified in our 2022 and 2023 annual reports and the change of our independent auditors.

As a global company, we are subject to taxation in the United States and various other countries. Significant judgment is required to determine and estimate worldwide tax liabilities. Our annual and quarterly tax rates could be affected by numerous factors, including changes in applicable tax laws, the amount and composition of pre-tax income in countries with different tax rates, and valuation of our deferred tax assets and liabilities. Due to economic and political conditions, tax laws and tax rates for income taxes in various jurisdictions may be subject to significant changes. The Organization for Economic Co-operation and Development and the G20 Inclusive Framework on Base Erosion and Profit Shifting have developed Pillar Two proposals that establish a global minimum corporate tax rate of fifteen percent. Several countries in which we operate have adopted legislation implementing these rules, including Singapore and Malaysia where this legislation became effective January 1, 2025. We currently benefit from certain tax incentives in Singapore and Malaysia that result in effective tax rates below fifteen percent in those jurisdictions. The Pillar Two rules may result in additional top-up taxes in these and other jurisdictions, which could increase our overall effective tax rate and adversely affect our financial results. We are subject to examinations of our income tax returns by domestic and foreign tax authorities. We regularly assess the likelihood of favorable or unfavorable outcomes resulting from these examinations to determine the adequacy of our provision for income taxes and have reserved for potential adjustments that may result from these examinations. There can be no assurance that any final determination will not be materially different from the treatment reflected in our historical income tax provisions and accruals, which could materially and adversely affect our financial condition and results of operations.

We rely heavily on OEM customers for the success of our business. The success of OEMs' business is, in turn, directly related to the success of IDMs and other chipmakers, whose customers are engaged in consumer-facing businesses. Much of our success, therefore, depends on consumer spending and capital expenditures by retail businesses. Uncertainty regarding the global economy may exacerbate negative trends in business and consumer spending, which may cause, and have caused in the past, our customers to scale back operations, reduce capital expenditures, exit businesses, move capacity to other manufacturers, in-source capacity or file for bankruptcy protection and potentially cease operations. Our customers may then be forced, and have been forced in the past, to push out, cancel or refrain from placing orders for our products or services. These conditions may also similarly affect, and have affected in the past, key suppliers, impairing their ability to timely deliver components or raw materials. We will then be forced to procure components or raw materials from higher-cost suppliers or reconfigure the design and manufacture of our products or services, which may eventually lead, and have led in the past, to our failure to fill customer orders. Recent inflationary trends have had, and could continue to have, a negative impact on many aspects of our cost structure.

We generated approximately 75.9% and 73.0% of our revenues in international markets for fiscal years 2025 and 2024, respectively. Depending on market conditions, we intend to further expand our operations in Asia Pacific and EMEA. The carrying amount of our fixed assets in Asia Pacific and EMEA were $120.2 million and $83.0 million, respectively as of December 26, 2025, and $121.0 million and $84.5 million, respectively as of December 27, 2024. We are exposed to political, economic, legal and other risks associated with operating in Asia and EMEA, including: - foreign currency exchange fluctuations;- political, civil, public health and economic instability, such as the one resulting from the conflict between Israel and Hamas-led groups that started in 2023;- restrictive governmental actions, such as restrictions on the transfer or repatriation of funds and foreign investments, import/export restrictions and quotas, and customs duties and tariffs;- uncertainty regarding social, political and trade policies in the United States and abroad;- timing and availability of export licenses;- disruptions due to developing domestic infrastructure in countries like China, including transportation and energy;- difficulties in developing relationships with local suppliers, attracting new international customers, conducting due diligence with respect to business partners in certain international markets, collecting accounts receivables, and staffing and managing distant international subsidiaries and branch operations;- the burden of complying with foreign and international laws and treaties;- legal systems potentially subject to undue influence or corruption; and - potentially adverse tax consequences, including restrictions on the repatriation of earnings to the United States. Negative or uncertain global conditions could prevent us (and have prevented us in the past) from accurately forecasting demand for our products and services. In addition, a shift in the mix of orders from our customers away from low-cost markets to higher cost markets could adversely affect our operating margins. Our operations in Asia Pacific and EMEA are subject to U.S. regulations governing equipment export. These laws are complex and require us to obtain export licenses, a failure of which could expose us to fines, penalties and export ban. The U.S. Department of Commerce continually updates and often expands the list of entities, to whom U.S. companies cannot sell certain products or provide certain services without a license from the Department of Commerce. These rules and regulatory changes could have material adverse impact on the result of our operations, and have changed our business forecast in the past. Over the past several years, some foreign government authorities, including those in China and South Korea, have pursued economic reform policies by promoting local businesses and local economic activity. Without notice, these government authorities may continue or alter these policies to our detriment, including imposition of confiscatory taxation policies, new restrictions on currency conversion, and limitations on sources of supply. We are subject to various laws and regulations of the countries where we conduct business, including laws and regulations relative to anti-corruption and anti-bribery, antitrust and competition, data privacy, and export regulations. These foreign laws and regulations are constantly evolving and may, in some cases, conflict with each other. Although our compliance policies against unethical business practices apply to all our employees and agents, any violation of these policies by a rogue employee or agent may expose us to enforcement actions under these laws and regulations. Other changes in U.S. or international social, political, regulatory and economic conditions or laws and policies governing tax laws, foreign trade, manufacturing, and development and investment in the countries where we or our customers operate could also adversely affect our operating results and our business. International trade disputes could result, and have resulted in the past, in increases in tariffs and other trade restrictions and protectionist measures that could adversely impact our operations and reduce the competitiveness of our products relative to local and global competitors.

Our facilities may experience catastrophic losses from natural disasters or other causalities, such as earthquakes, storms, floods, fires, public health epidemics, labor disruptions, power outages, terrorist attacks or political unrest, any of which could disrupt operations, delay production and shipments, and result in significant repair expenses. We have facilities in areas with elevated seismic activity, including Hayward, California, and our Taiwan facilities in Hsinchu and Tainan. We have also experienced fires and extended power outages at our facilities. Our insurance policies do not fully cover losses from earthquakes, other natural disasters, or power loss, leaving us exposed to substantial uninsured costs. Our Fluid Solutions business operations are concentrated in Israel, where key employees, offices and production facilities are located. The region faces ongoing armed conflict and security threats that directly impact our operations. While a phased ceasefire agreement between Israel and Hamas took effect in October 2025, the situation remains fragile with continued violence, miliary activity, and restrictions on movement and commerce. This instability has disrupted and may continue to disrupt our workforce availability, our ability to ship products to customers, and our ability to receive materials from suppliers. In addition, our suppliers experiencing natural disasters or geopolitical disruptions may not be able to provide sufficient components or raw materials in a timely manner, which can cause disruptions to our operations.

Rapid technological innovation in the markets we serve (for example, the recent proliferation of artificial intelligence) requires us to anticipate and respond quickly to evolving customer requirements and could render our current product or service offerings and technology obsolete. Technological innovations are inherently complex. We believe that our future success will depend upon our ability to timely design, engineer and manufacture products and services that meet the changing needs of our customers. If we are unable to integrate new technical specifications into competitive product and service designs, develop the technical capabilities necessary to manufacture new products or provide new services or make necessary modifications or enhancements to existing products or services, our business prospects could be harmed. The timely development of new or enhanced products and services requires us to: - design innovative and performance-enhancing features to differentiate our products and services;- identify emerging technological trends, including new standards for our products and services;- accurately identify and design new products and services to meet market needs;- timely and efficiently collaborate with OEMs and IDMs to design and develop products and services;- timely ramp-up production of new products, especially new subsystems, at acceptable yields and costs;- successfully manage development production cycles; and - respond effectively to technological changes or product or service announcements by others.

We have in the past and may in the future receive claims that our products, processes or technologies infringe the patents or other proprietary rights of third parties. Any litigation regarding third party patents or other intellectual property rights could be costly and time-consuming and divert our key resources from our business operations. The complexity of the technology involved in our products and the uncertainty of intellectual property litigation increase these risks. Claims of intellectual property infringement may also require us to enter into costly license agreements, possibly on terms unacceptable to us. We also may be subject to significant damages or injunctions against the development, manufacture and sale of certain of our products if any such claims prove successful. We also rely on design specifications and other proprietary information provided by our customers to manufacture products for such customers. While many of our customers are contractually obligated to indemnify us for the costs to defend third party claims arising out of our use of the information provided by the customers, the indemnified amount may not be enough to make us whole, or if our customers refuse to honor its obligations, we could end up in costly litigations both to defend against such third-party claims and to enforce our contractual indemnification rights.