MKS INC — Director's Dealing 2025

Oct 2, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MKS INC (MKSI)
CIK: 0001049502
Period of Report: 2025-10-01

Reporting Person: Moloney Jacqueline F (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-10-01	Common Stock	S	300	$122.14	Disposed	11562.304	Direct

Footnotes

F1: This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 10, 2024.