MKS Inc.

B usiness MKS Inc., formerly known as MKS Instruments, Inc. ( MKS, the Company, our, or we ), was founded in 1961 as a Massachusetts corporation. We enable technologies that transform our world. We deliver foundational technology solutions to leading edge semiconductor manufacturing, electronics and packaging, and specialty industrial applications. We apply our broad science and engineering capabilities to create instruments, subsystems, systems, process control solutions and specialty chemicals technology that improve process performance, optimize productivity and enable unique innovations for many of the world’s leading technology and industrial companies. Our solutions are critical to addressing the challenges of miniaturization and complexity in advanced device manufacturing by enabling increased power, speed, feature enhancement and optimized connectivity. Our solutions are also critical to addressing ever-increasing performance requirements across a wide array of specialty industrial applications. Where You Can Find More Information We file reports, proxy statements and other documents with the Securities and Exchange Commission (the SEC ). Our SEC filings are available to you on the SEC’s website at http://www.sec.gov. Our website is http://www.mks.com. We are not including the information contained in our website as part of, or incorporating it by reference into, this Annual Report on Form 10-K.