0001127602-24-001884.txt : 20240123 0001127602-24-001884.hdr.sgml : 20240123 20240123134508 ACCESSION NUMBER: 0001127602-24-001884 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20240122 FILED AS OF DATE: 20240123 DATE AS OF CHANGE: 20240123 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: COLELLA GERARD G CENTRAL INDEX KEY: 0001256715 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 000-23621 FILM NUMBER: 24551896 MAIL ADDRESS: STREET 1: 6 SHATTUCK RD 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] 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 2024-01-22 0001049502 MKS INSTRUMENTS INC MKSI 0001256715 COLELLA GERARD G C/O MKS INSTRUMENTS, INC. 2 TECH DRIVE, SUITE 201 ANDOVER MA 01810 1 1 Common Stock 2024-01-22 4 S 0 10000 110.0004 D 78017 I By The Gerald G. Colella Living Trust Common Stock 4115.791 D This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 8, 2023. This transaction was executed in multiple trades at prices ranging from $110.00 to $110.025. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, the full information regarding the number of shares and prices at which the transaction was effected. /s/ M. Kathryn Rickards, attorney-in-fact 2024-01-23