John Tseng-Chung Lee - Dec 1, 2023 Form 4 Insider Report for MKS INSTRUMENTS INC (MKSI)

Role
President & CEO, Director
Signature
/s/ M. Kathryn Rickards, attorney-in-fact
Stock symbol
MKSI
Transactions as of
Dec 1, 2023
Transactions value $
-$275,722
Form type
4
Date filed
12/5/2023, 02:36 PM
Previous filing
May 11, 2023
Next filing
Feb 6, 2024

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction MKSI Common Stock Options Exercise +390 +0.5% 78.5K Dec 1, 2023 Direct F1
transaction MKSI Common Stock Options Exercise +1.19K +1.51% 79.7K Dec 1, 2023 Direct F1
transaction MKSI Common Stock Options Exercise +160 +0.2% 79.9K Dec 1, 2023 Direct F1
transaction MKSI Common Stock Options Exercise +569 +0.71% 80.4K Dec 1, 2023 Direct F1
transaction MKSI Common Stock Options Exercise +970 +1.21% 81.4K Dec 1, 2023 Direct F1
transaction MKSI Common Stock Tax liability -$276K -3.28K -4.02% $84.19 78.1K Dec 1, 2023 Direct F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction MKSI Restricted Stock Unit Options Exercise -390 -0.48% 80.4K Dec 1, 2023 Common Stock 390 Direct F1, F3
transaction MKSI Restricted Stock Unit Options Exercise -1.19K -1.47% 79.2K Dec 1, 2023 Common Stock 1.19K Direct F1, F4
transaction MKSI Restricted Stock Unit Options Exercise -160 -0.2% 79.1K Dec 1, 2023 Common Stock 160 Direct F1, F3
transaction MKSI Restricted Stock Unit Options Exercise -569 -0.72% 78.5K Dec 1, 2023 Common Stock 569 Direct F1, F4
transaction MKSI Restricted Stock Unit Options Exercise -970 -1.24% 77.5K Dec 1, 2023 Common Stock 970 Direct F1, F5
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
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.
F5 Portion of 2023 RSU Award accelerated to satisfy FICA taxes.