John Lee reports an option exercise and tax withholding on shares
By AlphaYouPublished Form 4
Lee John Tseng-Chung
Reporting filer
John Tseng-Chung Lee reports an option exercise and tax withholding on shares, not an open-market purchase or sale, in Mks Inc. Form 4 filed Nov 3, 2026 lists 5 entries.
- Disclosed
- Nov 3, 2026
Reported details
5 entries| Security | Owner | Date | Code | Action | Quantity | Price | Following holdings | Reporting delay | Filed terms and references |
|---|---|---|---|---|---|---|---|---|---|
| Common Stock | Lee John Tseng-Chung | 2026-10-30 | M | Exercise or conversion | 1478.864 | Not stated (see footnotes) | 136,255.131 | 4 days | Filed terms
|
| Common Stock | Lee John Tseng-Chung | 2026-10-30 | M | Exercise or conversion | 678.581 | Not stated (see footnotes) | 136,933.712 | 4 days | Filed terms
|
| Common Stock | Lee John Tseng-Chung | 2026-10-30 | F | Tax/exercise withholding | 2157.445 | 202.04 | 134,776.267 | 4 days | Filed terms
|
| Restricted Stock Unit (derivative) | Lee John Tseng-Chung | 2026-10-30 | M | Exercise or conversion | 1478.864 | Not stated (see footnotes) | 83,349.257 | 4 days | Filed terms
|
| Restricted Stock Unit (derivative) | Lee John Tseng-Chung | 2026-10-30 | M | Exercise or conversion | 678.581 | Not stated (see footnotes) | 82,670.676 | 4 days | Filed terms
|
Common Stock
- Owner
- Lee John Tseng-Chung
- Date
- 2026-10-30
- Code
- M
- Action
- Exercise or conversion
- Quantity
- 1478.864
- Price
- Not stated (see footnotes)
- Following holdings
- 136,255.131
- Reporting delay
- 4 days
- Filed terms and references
Filed terms
- security Title: Common Stock
- transaction Date: 2026-10-30
- transaction Form Type: 4
- transaction Code: M
- equity Swap Involved: 0
- transaction Timeliness:
- transaction Shares: 1478.864
- id: F1
- transaction Acquired Disposed Code: A
- shares Owned Following Transaction: 136255.1307
- direct Or Indirect Ownership: D
Common Stock
- Owner
- Lee John Tseng-Chung
- Date
- 2026-10-30
- Code
- M
- Action
- Exercise or conversion
- Quantity
- 678.581
- Price
- Not stated (see footnotes)
- Following holdings
- 136,933.712
- Reporting delay
- 4 days
- Filed terms and references
Filed terms
- security Title: Common Stock
- transaction Date: 2026-10-30
- transaction Form Type: 4
- transaction Code: M
- equity Swap Involved: 0
- transaction Timeliness:
- transaction Shares: 678.581
- id: F1
- transaction Acquired Disposed Code: A
- shares Owned Following Transaction: 136933.7117
- direct Or Indirect Ownership: D
Common Stock
- Owner
- Lee John Tseng-Chung
- Date
- 2026-10-30
- Code
- F
- Action
- Tax/exercise withholding
- Quantity
- 2157.445
- Price
- 202.04
- Following holdings
- 134,776.267
- Reporting delay
- 4 days
- Filed terms and references
Filed terms
- security Title: Common Stock
- transaction Date: 2026-10-30
- transaction Form Type: 4
- transaction Code: F
- equity Swap Involved: 0
- id: F2
- transaction Timeliness:
- transaction Shares: 2157.445
- transaction Price Per Share: 202.04
- transaction Acquired Disposed Code: D
- shares Owned Following Transaction: 134776.2667
- direct Or Indirect Ownership: D
Restricted Stock Unit (derivative)
- Owner
- Lee John Tseng-Chung
- Date
- 2026-10-30
- Code
- M
- Action
- Exercise or conversion
- Quantity
- 1478.864
- Price
- Not stated (see footnotes)
- Following holdings
- 83,349.257
- Reporting delay
- 4 days
- Filed terms and references
Filed terms
- security Title: Restricted Stock Unit
- id: F1
- transaction Date: 2026-10-30
- transaction Form Type: 4
- transaction Code: M
- equity Swap Involved: 0
- transaction Timeliness:
- transaction Shares: 1478.864
- id: F1
- transaction Acquired Disposed Code: D
- id: F3
- id: F3
- underlying Security Title: Common Stock
- underlying Security Shares: 1478.864
- shares Owned Following Transaction: 83349.257
- direct Or Indirect Ownership: D
Restricted Stock Unit (derivative)
- Owner
- Lee John Tseng-Chung
- Date
- 2026-10-30
- Code
- M
- Action
- Exercise or conversion
- Quantity
- 678.581
- Price
- Not stated (see footnotes)
- Following holdings
- 82,670.676
- Reporting delay
- 4 days
- Filed terms and references
Filed terms
- security Title: Restricted Stock Unit
- id: F1
- transaction Date: 2026-10-30
- transaction Form Type: 4
- transaction Code: M
- equity Swap Involved: 0
- transaction Timeliness:
- transaction Shares: 678.581
- id: F1
- transaction Acquired Disposed Code: D
- id: F4
- id: F4
- underlying Security Title: Common Stock
- underlying Security Shares: 678.581
- shares Owned Following Transaction: 82670.676
- direct Or Indirect Ownership: D
Purchases, sales, grants and option exercises are different transactions. The reported code identifies the action; it does not establish a motive.
Filing context
- Quantities and prices are shown in the units filed. No trade value is inferred from their product.
- Lee John Tseng-Chung: President & CEO, Director.
- 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 2025 RSU Award accelerated to satisfy FICA taxes.
- F4: Portion of 2026 RSU Award accelerated to satisfy FICA taxes.
Original sources
Prepared automatically from public filing data. Report a correction.