0001127602-18-005398.txt : 20180213 0001127602-18-005398.hdr.sgml : 20180213 20180213130528 ACCESSION NUMBER: 0001127602-18-005398 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20180212 FILED AS OF DATE: 20180213 DATE AS OF CHANGE: 20180213 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Quirk Brian Charles CENTRAL INDEX KEY: 0001600515 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 000-23621 FILM NUMBER: 18601573 MAIL ADDRESS: STREET 1: C/O MKS INSTRUMENTS, INC. STREET 2: 2 TECH DRIVE, SUITE 201 CITY: ANDOVER STATE: MA ZIP: 01810 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 2018-02-12 0001049502 MKS INSTRUMENTS INC MKSI 0001600515 Quirk Brian Charles 2 TECH DRIVE, SUITE 201 ANDOVER MA 01810 1 Sr. VP, Global Operations Restricted Stock Unit 2018-02-12 4 J 0 1070.901 D Common Stock 1070.901 12259.401 D Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc. This transaction reflects the forfeiture of RSUs due to performance criteria. 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, 2018, 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 2018-02-12