4//SEC Filing
Lee John Tseng-Chung 4
Accession 0001049502-25-000035
CIK 0001049502other
Filed
Nov 3, 7:00 PM ET
Accepted
Nov 4, 4:58 PM ET
Size
11.9 KB
Accession
0001049502-25-000035
Insider Transaction Report
Form 4
MKS INCMKSI
Lee John Tseng-Chung
Group VP & GM CIT/ION Products
Transactions
- Exercise/Conversion
Common Stock
2025-10-31+1,651→ 149,272.523 total - Exercise/Conversion
Restricted Stock Unit
2025-10-31−1,651→ 88,152.622 total→ Common Stock (1,651 underlying) - Exercise/Conversion
Common Stock
2025-10-31+352→ 147,621.523 total - Tax Payment
Common Stock
2025-10-31$143.71/sh−2,003$287,851→ 147,269.523 total - Exercise/Conversion
Restricted Stock Unit
2025-10-31−352→ 89,803.622 total→ Common Stock (352 underlying)
Footnotes (4)
- [F1]Each restricted stock unit (RSU) represents the contingent right to receive one share of common stock of MKS Inc.
- [F2]Shares used to satisfy FICA taxes.
- [F3]Portion of 2024 RSU Award accelerated to satisfy FICA taxes.
- [F4]Portion of 2025 RSU Award accelerated to satisfy FICA taxes.
Documents
Issuer
MKS INC
CIK 0001049502
Entity typeother
Related Parties
1- filerCIK 0001414656
Filing Metadata
- Form type
- 4
- Filed
- Nov 3, 7:00 PM ET
- Accepted
- Nov 4, 4:58 PM ET
- Size
- 11.9 KB