0001127602-24-027461.txt : 20241118 0001127602-24-027461.hdr.sgml : 20241118 20241118143411 ACCESSION NUMBER: 0001127602-24-027461 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20241115 FILED AS OF DATE: 20241118 DATE AS OF CHANGE: 20241118 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Mayampurath Ramakumar CENTRAL INDEX KEY: 0001859332 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 000-23621 FILM NUMBER: 241471077 MAIL ADDRESS: STREET 1: 2225 W CHANDLER BLVD CITY: CHANDLER STATE: AZ ZIP: 85224 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: MKS INSTRUMENTS INC CENTRAL INDEX KEY: 0001049502 STANDARD INDUSTRIAL CLASSIFICATION: INDUSTRIAL INSTRUMENTS FOR MEASUREMENT, DISPLAY, AND CONTROL [3823] ORGANIZATION NAME: 08 Industrial Applications and Services 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 X0508 4 2024-11-15 0001049502 MKS INSTRUMENTS INC MKSI 0001859332 Mayampurath Ramakumar C/O MKS INSTRUMENTS, INC. 2 TECH DRIVE, SUITE 201 ANDOVER MA 01810 1 EVP, CFO & Treasurer 0 Restricted Stock Unit 2024-11-15 4 A 0 16590.823 A Common Stock 16590.823 16590.823 D Each restricted stock unit (RSU) represents the contingent right to receive one share of common stock of MKS Instruments, Inc. These RSUs vest in two equal annual installments commencing on November 15, 2025, provided that if, in any vesting year, November 15th is not a business day, such vesting shall occur on the next business day. /s/ James Kruger, attorney-in-fact 2024-11-18