MKS Instruments to Present at Upcoming Investment Conferences

MKS Instruments, Inc. (NASDAQ: MKSI), a global provider of technologies that enable advanced processes and improve productivity, announced today that company management will be presenting at the following investment conferences:

Cowen 47th Annual Technology, Media & Telecom Conference
Lotte New York Palace Hotel, New York, New York
Presentation Date & Time:  Wednesday, May 29, 2019 at 9:40 a.m. EDT
MKS participants:		Gerald Colella, Chief Executive Officer
		Seth Bagshaw, Senior Vice President, Chief Financial Officer and Treasurer
Baird 2019 Global Consumer, Technology & Services Conference
Intercontinental New York Barclay, New York, New York
Presentation Date & Time:  Tuesday, June 4, 2019 at 2:00 p.m. EDT
MKS participants:		Gerald Colella, Chief Executive Officer
		Seth Bagshaw, Senior Vice President, Chief Financial Officer and Treasurer
Deutsche Bank 10th Annual Global Industrials & Materials Summit
The Westin Chicago River North, Chicago, Illinois
Presentation Date & Time:  Wednesday, June 5, 2019 at 1:25 p.m. CDT (2:25 p.m. EDT)
MKS participants:  John T.C. Lee, President and Chief Operating Officer
Stifel 2019 Cross Sector Insight Conference
InterContinental Boston, Boston, Massachusetts
Presentation Date & Time:  Monday, June 10, 2019 at 1:15 p.m. EDT
MKS participants:		John T.C. Lee, President and Chief Operating Officer
		Seth Bagshaw, Senior Vice President, Chief Financial Officer and Treasurer

The presentation slides utilized for these events and webcast, if applicable, will be made available for a limited time in the Investor Relations section of the company's website at www.mksinst.com.

About MKS Instruments

MKS Instruments, Inc. is a global provider of instruments, subsystems and process control solutions that measure, monitor, deliver, analyze, power and control critical parameters of advanced manufacturing processes to improve process performance and productivity for our customers. Our products are derived from our core competencies in pressure measurement and control, flow measurement and control, gas and vapor delivery, gas composition analysis, residual gas analysis, leak detection, control technology, ozone generation and delivery, power, reactive gas generation, vacuum technology, lasers, photonics, sub-micron positioning, vibration control, optics and laser-based manufacturing solutions. We also provide services relating to the maintenance and repair of our products, installation services and training. Our primary served markets include the semiconductor, industrial technologies, life and health sciences, research and defense.  Additional information can be found at www.mksinst.com.

Company Contact:  Seth BagshawSenior Vice President, Chief Financial Officer and TreasurerTelephone:  978.645.5578

Investor Relations Contacts:  Monica GouldThe Blueshirt GroupTelephone:  212.871.3927Email:  [e-mail]

Lindsay Grant SavareseThe Blueshirt GroupTelephone:  212.331.8417Email:  [e-mail]