You are cordially invited to attend the 2015 Annual Meeting of Shareholders of MKS Instruments, Inc. to be held on Monday, May 4, 2015 at 10:00 a.m., local time, at the Wyndham Boston Andover Hotel, …

MKS Instruments, Inc. is a global provider of instruments, subsystems and process control solutions that measure, control, power, monitor and analyze critical parameters of advanced manufacturing …

Explanation of Responses: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc. e 10b5-1 trading plan previously adopted by The …

References in this proxy statement to “we,” “us,” the “Company” or “MKS” refer to MKS Instruments, Inc. and its consolidated subsidiaries. All proxies will be voted in accordance with the shareholders’ …

MKS Instruments, Inc. is a global provider of instruments, subsystems and process control solutions that measure, control, power, monitor and analyze critical parameters of advanced manufacturing …

Explanation of Responses: Each restricted stock unit (RSU) represents the contingent right to receive one share of common stock of MKS Instruments, Inc. e 10b5-1 trading plan previously ado These …

Readers are referred to MKS’ filings with the Securities and Exchange Commission, including its most recent Quarterly Report on Form 10-Q, for a discussion of these and other important risk factors …

MKS INSTRUMENTS, INC. By: /s/ John R. Bertucci ----------------------------- John R. Bertucci Chairman of the Board, President and Chief Executive Officer

On September 27, 2019, MKS Instruments, Inc., a Massachusetts corporation (the “Company”), entered into Amendment No. 6 , (the “Repricing Amendment”) to the Term Loan Credit Agreement, dated as …

99.1 Supplemental Consolidated Financial Statements of MKS Instruments, Inc. as of December 31, 2000 and 1999 and for the years ended December 31, 2000, 1999 and 1998 and Report of …