MKS INC — Director's Dealing 2024

Aug 16, 2024

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MKS INSTRUMENTS INC (MKSI)
CIK: 0001049502
Period of Report: 2024-08-15

Reporting Person: Williams John Edward (EVP & GM, PSD)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2024-08-15	Common Stock	M	946	—	Acquired	2120	Direct
2024-08-15	Common Stock	F	307	$113.91	Disposed	1813	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2024-08-15	Restricted Stock Unit	$	M	946	Disposed		Common Stock (946)	Direct

Footnotes

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

F2: These RSUs vest in two equal annual installments commencing on August 15, 2024, provided that if, in any vesting year, August 15th is not a business day, such vesting shall occur on the next business day.