0001127602-18-017151.txt : 20180511 0001127602-18-017151.hdr.sgml : 20180511 20180511122124 ACCESSION NUMBER: 0001127602-18-017151 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20180509 FILED AS OF DATE: 20180511 DATE AS OF CHANGE: 20180511 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Lee John Tseng-Chung CENTRAL INDEX KEY: 0001414656 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 000-23621 FILM NUMBER: 18825891 MAIL ADDRESS: STREET 1: 90 INDUSTRIAL WAY CITY: WILMINGTON STATE: MA ZIP: 01887 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: MKS INSTRUMENTS INC CENTRAL INDEX KEY: 0001049502 STANDARD INDUSTRIAL CLASSIFICATION: INDUSTRIAL INSTRUMENTS FOR MEASUREMENT, DISPLAY, AND CONTROL [3823] IRS NUMBER: 042277512 STATE OF INCORPORATION: MA FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 2 TECH DRIVE STREET 2: SUITE 201 CITY: ANDOVER STATE: MA ZIP: 01810 BUSINESS PHONE: 978-645-5500 MAIL ADDRESS: STREET 1: 2 TECH DRIVE STREET 2: SUITE 201 CITY: ANDOVER STATE: MA ZIP: 01810 4 1 form4.xml PRIMARY DOCUMENT X0306 4 2018-05-09 0001049502 MKS INSTRUMENTS INC MKSI 0001414656 Lee John Tseng-Chung 2 TECH DRIVE ANDOVER MA 01810 1 President & COO Restricted Stock Unit 2018-05-09 4 A 0 771.605 A Common Stock 771.605 19310.653 D Restricted Stock Unit 2018-05-09 4 A 0 1157.407 A Common Stock 1157.407 21109.491 D Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc. These RSUs vest in three equal annual installments commencing on February 15, 2019, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day. These RSUs are subject to the achievement of performance criteria determined in the first year of grant and thereafter vest in three equal annual installments beginning on February 15, 2019, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day. /s/ M. Kathryn Rickards, attorney-in-fact 2018-05-10