MKS Inc.

MKS Inc. is a global technology company that provides instruments, subsystems, systems, process control technologies, and specialty chemical products. Headquartered in Andover, Massachusetts, the company's mission is to be an innovation leader and trusted partner, pushing the boundaries of possibility by delivering foundational technology solutions.

The company operates through three main divisions: Vacuum Solutions, Photonics Solutions, and Materials Solutions. MKS Inc. offers a broad portfolio of products including vacuum gauges, mass flow controllers, lasers, optical components, power solutions, and specialty chemicals. These solutions cater to critical parameters in advanced manufacturing processes across semiconductor manufacturing, electronics and packaging, and specialty industrial applications, as well as life and health sciences, research, and defense sectors.

Formerly known as MKS Instruments, Inc., the company officially changed its corporate name to MKS Inc. on May 16, 2025, to better reflect its expanded scope. John T.C. Lee serves as President and CEO. MKS Inc. is actively pursuing strategic initiatives such as strengthening its presence in semiconductor markets, committing to sustainability goals with approved science-based emissions reduction targets, and exploring diversification into new areas like electric vehicles and advanced healthcare technologies.