On behalf of MKS, I am pleased to present our 2024 Environmental, Social, Governance (ESG) Report. With unprecedented challenges and uncertain markets, 2023 proved to be a challenging year for all of us. However, we have been resilient, continuing to go where the hardest problems are and remaining steadfast in our commitment to sustainability and our dedication to creating long-term value for all our stakeholders. This report serves as a testament to our progress, achievements, and ongoing efforts to integrate sustainability holistically into our business and enable technologies that transform the world.

At MKS, our commitment to sustainability is driven by our innovative spirit, collaborative approach, and foundation of integrity and trust. We combine our cutting-edge science and engineering with our focus on solving our customers’ hardest technology challenges to develop products that support the success of our customers, the sustainability of our planet, and the safety and productivity of our communities. To this end, we have created solutions such as our Covertron® 600 pretreatment for plastics’ metallization, which eliminates Cr(VI), and non-PFAS components to reduce environmental impact and enhance worker safety, and our EDEN® process chemical technology, a cost-effective and environmentally friendly process that reduces waste and operating expenses.

In August 2022, we closed our strategic acquisition of Atotech, which now operates as our Materials Solutions Division (MSD), and I am proud to announce that MSD has celebrated its first full year as part of the MKS team. During this integration, we looked to find opportunities to further our ESG efforts, not only in our legacy MKS business, but also the Atotech business, and I am excited to share that this year’s report encompasses ESG-related updates, data, and insights for the new, fully integrated MSD. Along with this milestone, I am pleased to highlight a few of our other, recent ESG achievements and commitments:

• We committed to reducing our combined Scope 1 and 2 emissions by 42% by 2030 from our 2022 baseline, in alignment with criteria established by the Science Based Targets initiative (SBTi). As a first step to setting SBTi-aligned Scope 3 emissions targets, we conducted a scope 3 screening analysis to determine Scope 3 categories relevant to our business and are now working to develop our consolidated Scope 3 emissions inventory. Once we determine our Scope 3 emissions targets, we will submit these climate goals to SBTi to be validated against SBTi guidance.
• We rolled out our third annual global employee engagement survey – the first to include participation from Atotech employees post-acquisition – and launched our inaugural Employee Resource Group (ERG), Women@MKS, marking a significant step towards fostering a more inclusive and diverse workplace.
• We continued to receive external recognition for our sustainability efforts. Our MSCI ESG rating was updated from “BB” to “A” in March 2023, and we were recognized in Sustainalytics’ 2024 list of ESG Top-Rated Companies. We were also acknowledged in Newsweek and Statista’s annual list of America’s Most Responsible Companies.

As a foundational solutions provider to the connected world, we recognize the responsibility we have to the world around us. At MKS, we view this responsibility as opportunity – opportunity to develop products that transform our world from both a technological and sustainability standpoint. As we look to the future, we are excited by the great potential our business has for contributing and supporting global efforts to combat climate change and drive sustainable innovation.

John T.C. Lee
President & Chief Executive Officer

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• Commitment to Sustainable Business Practices
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