0001127602-24-005319.txt : 20240216 0001127602-24-005319.hdr.sgml : 20240216 20240216145840 ACCESSION NUMBER: 0001127602-24-005319 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20240215 FILED AS OF DATE: 20240216 DATE AS OF CHANGE: 20240216 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Lee John Tseng-Chung CENTRAL INDEX KEY: 0001414656 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 000-23621 FILM NUMBER: 24647692 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] 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 2024-02-15 0001049502 MKS INSTRUMENTS INC MKSI 0001414656 Lee John Tseng-Chung C/O MKS INSTRUMENTS, INC. 2 TECH DRIVE, SUITE 201 ANDOVER MA 01810 1 1 President & CEO 0 Common Stock 2024-02-15 4 M 0 9235.403 A 87373.1637 D Common Stock 2024-02-15 4 M 0 3777.847 A 91151.0107 D Common Stock 2024-02-15 4 M 0 14041 A 105192.0107 D Common Stock 2024-02-15 4 M 0 6734 A 111926.0107 D Common Stock 2024-02-15 4 M 0 23093 A 135019.0107 D Common Stock 2024-02-15 4 M 0 7653 A 142672.0107 D Common Stock 2024-02-15 4 F 0 30231 122.15 D 112441.0107 D Restricted Stock Unit 2024-02-15 4 A 0 22607.994 A Common Stock 22607.994 169412.702 D Restricted Stock Unit 2024-02-15 4 M 0 9235.403 D Common Stock 9235.403 160177.299 D Restricted Stock Unit 2024-02-15 4 M 0 3777.847 D Common Stock 3777.847 156399.452 D Restricted Stock Unit 2024-02-15 4 M 0 14041 D Common Stock 14041 142358.452 D Restricted Stock Unit 2024-02-15 4 M 0 6734 D Common Stock 6734 135624.452 D Restricted Stock Unit 2024-02-15 4 M 0 23093 D Common Stock 23093 112531.452 D Restricted Stock Unit 2024-02-15 4 M 0 7653 D Common Stock 7653 104878.452 D Each restricted stock unit (RSU) represents the contingent right to receive one share of common stock of MKS Instruments, Inc. These shares were withheld by MKS Instruments, Inc. to satisfy the tax withholding obligations triggered by the vesting of RSUs and do not represent a discretionary trade by the reporting person. These RSUs vest in three equal annual installments commencing on February 15, 2025, 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 were subject to performance criteria, the achievement of which was determined on January 21, 2022, and thereafter vest in three equal annual installments beginning on February 15, 2022, 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 vest in three equal annual installments commencing on February 15, 2022, 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 were subject to performance criteria, the achievement of which was determined on February 8, 2023, and thereafter vest in three equal annual installments beginning on February 15, 2023, 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 vest in three equal annual installments commencing on February 15, 2023, 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 were subject to performance criteria, the achievement of which was determined on February 5, 2024, and thereafter vest in three equal annual installments beginning on February 15, 2024, 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 vest in three equal annual installments commencing on February 15, 2024, 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 2024-02-16