MKS INC — Director's Dealing 2022

Dec 5, 2022

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MKS INSTRUMENTS INC (MKSI)
CIK: 0001049502
Period of Report: 2022-12-02

Reporting Person: BAGSHAW SETH H (Sr. VP, CFO & Treasurer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2022-12-02	Common Stock	M	315	—	Acquired	34682.623	Direct
2022-12-02	Common Stock	M	308	—	Acquired	34990.623	Direct
2022-12-02	Common Stock	F	623	$83.86	Disposed	34367.623	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2022-12-02	Restricted Stock Unit	$	M	315	Disposed		Common Stock (315)	Direct
2022-12-02	Restricted Stock Unit	$	M	308	Disposed		Common Stock (308)	Direct

Footnotes

F1: Each restricted stock unit (RSU) represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F2: Shares used to satisfy FICA taxes.

F3: Portion of 2021 RSU Award accelerated to satisfy FICA taxes.

F4: Portion of 2022 RSU Award accelerated to satisfy FICA taxes.