John Edward Williams - 17 Apr 2025 Form 4 Insider Report for MKS INSTRUMENTS INC (MKSI)

Role
EVP & GM, PSD
Signature
/s/ James Kruger, attorney-in-fact
Issuer symbol
MKSI
Transactions as of
17 Apr 2025
Net transactions value
-$35,985
Form type
4
Filing time
18 Apr 2025, 11:04:23 UTC
Previous filing
19 Feb 2025
Next filing
18 Aug 2025
SEC
View on sec.gov

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction MKSI Common Stock Options Exercise +1,740 +95% 3,566 17 Apr 2025 Direct F1
transaction MKSI Common Stock Tax liability $35,985 -565 -16% $63.69 3,001 17 Apr 2025 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 -1,740 -17% 8,291 17 Apr 2025 Common Stock 1,740 Direct F1, F3
* 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 shares were withheld by MKS Instruments, Inc. to satisfy the tax withholding obligations triggered by the vesting of RSUs and do not represent a discretionary trade by the reporting person.
F3 These RSUs vest in two equal annual installments commencing on April 17, 2025, provided that if, in any vesting year, April 17th is not a business day, such vesting shall occur on the next business day.