Mayampurath Ramakumar 4
4 · MKS INC · Filed Nov 18, 2025
Insider Transaction Report
Form 4
MKS INCMKSI
Mayampurath Ramakumar
EVP & CFO
Transactions
- Exercise/Conversion
Restricted Stock Unit
2025-11-17−8,295→ 16,402.394 total→ Common Stock (8,295 underlying) - Exercise/Conversion
Common Stock
2025-11-17+8,295→ 8,295 total - Tax Payment
Common Stock
2025-11-17$142.74/sh−2,628$375,121→ 5,667 total
Footnotes (3)
- [F1]Each restricted stock unit (RSU) represents the contingent right to receive one share of common stock of MKS Inc.
- [F2]These shares were withheld by MKS 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 November 15, 2025, provided that if, in any vesting year, November 15th is not a business day, such vesting shall occur on the next business day.