David Philip Henry - 03 Jul 2025 Form 4 Insider Report for MKS INC (MKSI)

Signature
/s/ James Kruger, attorney-in-fact
Issuer symbol
MKSI
Transactions as of
03 Jul 2025
Net transactions value
-$210,000
Form type
4
Filing time
07 Jul 2025, 16:07:28 UTC
Previous filing
19 Feb 2025
Next filing
19 Sep 2025

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Henry David Philip EVP, Operations & Corp Mktg C/O MKS INC., 2 TECH DRIVE, ANDOVER /s/ James Kruger, attorney-in-fact 07 Jul 2025 0001842459

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction MKSI Common Stock Sale $210,000 -2,000 -8.9% $105.00 20,571 03 Jul 2025 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
F1 This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 12, 2025.