0001127602-18-005401.txt : 20180213 0001127602-18-005401.hdr.sgml : 20180213 20180213131011 ACCESSION NUMBER: 0001127602-18-005401 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: Werth Dennis L CENTRAL INDEX KEY: 0001550572 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 000-23621 FILM NUMBER: 18601603 MAIL ADDRESS: STREET 1: 1791 DEERE AVENUE CITY: IRVINE STATE: CA ZIP: 92606 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 0001550572 Werth Dennis L 2 TECH DRIVE SUITE 201 ANDOVER MA 01810 1 Sr. VP, Business Units Restricted Stock Unit 2018-02-12 4 J 0 1499.262 D Common Stock 1499.262 10282.07 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