Gerard G. Colella - May 12, 2025 Form 4 Insider Report for MKS INSTRUMENTS INC (MKSI)

Role
Director
Signature
/s/ M. Kathryn Rickards, attorney-in-fact
Stock symbol
MKSI
Transactions as of
May 12, 2025
Transactions value $
$0
Form type
4
Date filed
5/13/2025, 04:33 PM
Previous filing
Feb 19, 2025
Next filing
Jul 23, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
COLELLA GERARD G Director C/O MKS INSTRUMENTS, INC., 2 TECH DRIVE, SUITE 201, ANDOVER /s/ M. Kathryn Rickards, attorney-in-fact 2025-05-13 0001256715

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction MKSI Common Stock Award +2.48K +43.21% 8.22K May 12, 2025 Direct F1, F2
holding MKSI Common Stock 60K May 12, 2025 By The Gerald G. Colella 2019 Trust
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 These restricted stock units become fully vested on the day prior to the first annual meeting of shareholders following the date of grant (or if no such meeting is held within 13 months after the date of grant, on the 13 month anniversary of the date of grant).
F2 Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.