MKS INC

We have three divisions, which are our reportable segments: Vacuum Solutions Division (“VSD”), Photonics Solutions Division (“PSD”) and Materials Solutions Division (“MSD”).

VSD delivers foundational technology solutions for semiconductor manufacturing, electronics and packaging and specialty industrial applications. VSD products are derived from our core competencies in vacuum technologies, including pressure measurement and control, flow measurement and control, gas and vapor delivery, gas composition analysis, electronic control technology, reactive gas generation and delivery, power generation and delivery, and fiber optic temperature and position sensing.

PSD provides a broad range of instruments, components and subsystems to leading edge semiconductor manufacturing, electronics and packaging and specialty industrial applications. PSD products are derived from our core competencies in lasers, photonics, optics, precision motion control and vibration control.

MSD develops leading process and manufacturing technologies for advanced surface modification, electroless and electrolytic plating, and surface finishing. Applying a comprehensive systems-and-solutions approach, MSD’s portfolio includes chemistry, equipment and services for innovative and high-technology applications in our electronics and packaging and specialty industrial markets.

Markets

Net Revenues by End Market

Semiconductor Market

We are a critical solutions provider for semiconductor manufacturing. Our products are used in major semiconductor processing steps, such as deposition, etching, cleaning, lithography, metrology, and inspection. The semiconductor industry continually faces new challenges, as products become smaller, more powerful and highly mobile. Ultra-thin layers, smaller critical dimensions, new materials, 3D structures, and the ongoing need for higher yield and productivity drive the need for tighter process measurement and control, all of which we support. We believe we are the broadest critical subsystem provider in the wafer fabrication equipment (“WFE”) ecosystem and address over 85% of the market. We characterize our broad and unique offering as Surround the Wafer® to reflect the technology enablement we provide across almost every major process in semiconductor manufacturing today.

The semiconductor market is subject to rapid demand shifts, which are difficult to predict, and we cannot be certain as to the timing or extent of future demand or any future softening in the semiconductor capital equipment industry. In addition to these rapid demand shifts, the semiconductor capital equipment industry has recently been subject to significant trade restrictions, especially in key markets, including China.

Approximately 43% and 42% of our net revenues for 2025 and 2024, respectively, were from sales to customers in the semiconductor market.

Net revenues from customers in our semiconductor market increased by $198 million, or 13%, in 2025, compared to 2024. The increase was mainly due to higher sales of our semiconductor capital equipment in logic and foundry applications, higher NAND memory production upgrades, and higher service revenues at VSD, partially offset by decreases in sales in our lithography, metrology and inspection products at PSD.

Electronics and Packaging Market

We are a foundational solutions provider for the electronics and packaging market. Our portfolio includes photonics components, laser drilling systems, electronics chemistries and plating equipment that are critical for the manufacturing of printed circuit boards (“PCB”) and package substrates, and critical to wafer level packaging (“WLP”) applications. Similar to the semiconductor industry, the PCB, package substrate and WLP industries demand smaller features, greater density, and better performance. In addition, the electronics and packaging market also includes sales of our vacuum and photonics solutions for display manufacturing applications. We characterize our complementary offering of laser systems and chemistry solutions as Optimize the Interconnect®, to reflect the unique technology enablement we provide at the Interconnect level within PCBs, package substrates and WLPs.

Approximately 28% and 26% of our net revenues for 2025 and 2024, respectively, were from sales to customers in our electronics and packaging market.

Net revenues from customers in our electronics and packaging market increased by $189 million, or 20%, in 2025 compared to 2024. This increase was primarily due to higher chemistry and equipment sales in the electronics market at MSD as well as higher sales of PCB via drilling systems at PSD.

Specialty Industrial Market

Our strategy in the specialty industrial market is to leverage our domain expertise and proprietary technologies across a broad array of applications in industrial, life and health sciences, and research and defense markets.

Industrial

Industrial encompasses a wide range of diverse applications, including chemistries for functional coatings, surface finishing and wear resistance in the automobile industry, vacuum solutions for synthetic diamond manufacturing and photonics for solar manufacturing. Other applications include vacuum and photonics solutions for light emitting diode and laser diode manufacturing.

Life and Health Sciences

Our products for life and health sciences are used in a diverse array of applications, including bioimaging, medical instrument sterilization, medical device manufacturing, analytical, diagnostic and surgical instrumentation, consumable medical supply manufacturing and pharmaceutical production.

Research and Defense

Our products for research and defense are sold to government, university and industrial laboratories for applications involving research and development in materials science, physical chemistry, photonics, optics and electronics materials. Our products are also sold for monitoring and defense applications, including surveillance, imaging and infrastructure protection.

Approximately 29% and 32% of our net revenues for 2025 and 2024, respectively, were from customers in our specialty industrial market.

Net revenues from customers in our specialty industrial market decreased by $42 million, or 4%, in 2025, compared to 2024. This decrease was primarily driven by lower sales to industrial customers at VSD and lower chemistry and equipment sales to industrial customers at MSD.

International Markets

A significant portion of our net revenues is from sales to customers in international markets. International net revenues accounted for approximately 81% and 78% of our total net revenues in 2025 and 2024, respectively. We report geographical net revenues based on the shipped-to location of the end customer. A significant portion of our international net revenues was from customers in China, South Korea, Singapore, Taiwan and Japan. We expect international net revenues will continue to account for a significant percentage of total net revenues for the foreseeable future.

Long-lived assets located outside of the United States accounted for approximately 70% and 59% of our total long-lived assets as of December 31, 2025 and 2024, respectively. Long-lived assets include property, plant and equipment, net, right-of-use assets and certain other assets.