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MKS INC Director's Dealing 2024

Dec 10, 2024

30723_dirs_2024-12-10_508fe636-18be-45ba-b5d9-1cda001f26af.zip

Director's Dealing

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SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MKS INSTRUMENTS INC (MKSI)
CIK: 0001049502
Period of Report: 2024-12-06

Reporting Person: Lee John Tseng-Chung (Director, President & CEO)

Non-Derivative Transactions

Date Security Code Shares Price A/D Holdings After Ownership
2024-12-06 Common Stock M 2010 Acquired 114698.5497 Direct
2024-12-06 Common Stock M 984 Acquired 115682.5497 Direct
2024-12-06 Common Stock F 2994 $114.60 Disposed 112688.5497 Direct

Derivative Transactions

Date Security Exercise Price Code Shares A/D Expiration Underlying Ownership
2024-12-06 Restricted Stock Unit $ M 2010 Disposed Common Stock (2010) Direct
2024-12-06 Restricted Stock Unit $ M 984 Disposed Common Stock (984) 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 2023 RSU Award accelerated to satisfy FICA taxes.

F4: Portion of 2024 RSU Award accelerated to satisfy FICA taxes.