Michelle M. McCarthy - Apr 15, 2024 Form 4 Insider Report for MKS INSTRUMENTS INC (MKSI)

Role
VP & Chief Accounting Officer
Signature
/s/ M. Kathryn Rickards, attorney-in-fact
Stock symbol
MKSI
Transactions as of
Apr 15, 2024
Transactions value $
$0
Form type
4
Date filed
4/16/2024, 03:40 PM
Previous filing
Mar 7, 2024
Next filing
Aug 19, 2024

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 Award +2.9K 2.9K Apr 15, 2024 Common Stock 2.9K Direct F1, F2
transaction MKSI Restricted Stock Unit Award +3.32K +114.29% 6.22K Apr 15, 2024 Common Stock 3.32K Direct F1, F2
* 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 These RSUs vest in three equal annual installments commencing on April 15, 2025, provided that if, in any vesting year, April 15th is not a business day, such vesting shall occur on the next business day.