Investor Relations

MKS Instruments is a global provider of instruments, subsystems, and process control solutions that measure, control, power, monitor, and analyze critical parameters of advanced manufacturing processes to improve process performance and productivity.  Our products are derived from our core competencies in pressure measurement and control, materials delivery, gas composition analysis, control and information technology, power and reactive gas generation, vacuum technology, photonics, lasers, optics and motion control. 

Our primary served markets include semiconductor capital equipment, industrial manufacturing, environmental, medical, life sciences and scientific research. 

Please direct questions concerning transfer of shares, lost certificates or related inquiries to:

American Stock Transfer & Trust Company
59 Maiden Lane
New York, New York 10038
Phone: 800-937-5449 (weekdays from 9:00 am to 5:00 pm Eastern time)
Fax: 718-236-2641

Calendar of Events

Feb 28, 2018 at 1:30 PM PT
- 1.10 (-0.99%)
Volume: 412,895
4:00 PM ET on Feb 16, 2018  |  Delayed at least 20 minutes.

The documents contained in (or directly accessible from) this website include forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including statements about future events or the future financial performance of MKS, and any other statements containing the words "believes," "expects," "anticipates," "plans," "estimates" and similar expressions. There are a number of important factors that could cause MKS' actual results to differ materially from those indicated by such forward-looking statements, including fluctuations in capital spending in the semiconductor industry, potential fluctuations in quarterly results, the failure of MKS and acquired companies to realize the anticipated benefits their combined businesses, the challenges and risks involved with integrating the operations of MKS and acquired companies, dependence on new product development, rapid technological and market change, acquisition strategy, manufacturing and sourcing risks, volatility of stock price, international operations, financial risk management, and future growth subject to risks. Interested parties are referred to MKS' filings with the Securities and Exchange Commission, including its most recent Annual Report on Form 10-K, for a discussion of these and other important risk factors concerning MKS and its operations. MKS is under no obligation to, and expressly disclaims any obligation to, update or alter its forward-looking statements, whether as a result of new information, future events or otherwise.