0001127602-23-023506.txt : 20230901 0001127602-23-023506.hdr.sgml : 20230901 20230901101305 ACCESSION NUMBER: 0001127602-23-023506 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20230831 FILED AS OF DATE: 20230901 DATE AS OF CHANGE: 20230901 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: COLELLA GERARD G CENTRAL INDEX KEY: 0001256715 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 000-23621 FILM NUMBER: 231230970 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] 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 2023-08-31 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 2023-08-31 4 S 0 10000 100.0056 D 88017 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 $100.00 to $100.11. 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 2023-09-01