A
$ Value
—
Shares
50,972
Price
—
Filed
Feb 9
Insider
Name
Lee John Tseng-Chung
Title
President & CEO
CIK
0001414656
Roles
Director
Officer
Transaction Details
Transaction Date
2026-02-08
Code
A
Table
Derivative
Ownership
Direct
Equity Swap
No
Shares After
139,124
Footnotes
Each restricted stock unit (RSU) represents the contingent right to receive one share of common stock of MKS Inc. | These RSUs were subject to performance criteria, the achievement of which was determined on February 8, 2026, and thereafter vest in three equal annual installments beginning on February 15, 2026, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.
Filing Info
Lee John Tseng-Chung's History
| Date | Ticker | Type | Value |
|---|---|---|---|
| 2026-02-21 | CGNX | M | $0 |
| 2026-02-21 | CGNX | M | $0 |
| 2026-02-20 | MKSI | ▼ | $3.4M |
| 2026-02-20 | MKSI | ▼ | $3.3M |
| 2026-02-20 | MKSI | ▼ | $513K |
| 2026-02-20 | MKSI | ▼ | $491K |
| 2026-02-18 | CGNX | M | $0 |
| 2026-02-18 | CGNX | M | $0 |
| 2026-02-17 | MKSI | M | — |
| 2026-02-17 | MKSI | M | — |
Other Insiders at MKSI (90d)
| Insider | Bought | Sold | Last |
|---|---|---|---|
| COLELLA GERALD G | — | $5.1M | 2026-02-24 |
| CANNONE PETER III | — | $323K | 2026-02-20 |
|
Lee John Tseng-Chung
President & CEO
|
— | $7.7M | 2026-02-20 |
| Moloney Jacqueline F | — | $278K | 2026-03-12 |
| Mora Elizabeth | — | $72K | 2026-03-02 |
|
Williams John Edward
EVP & GM, PSD
|
— | $524K | 2026-04-17 |
|
McCarthy Michelle M
SVP & Chief Accounting Officer
|
— | — | 2026-04-15 |
|
McCarthy Michelle M
VP & Chief Accounting Officer
|
— | $367K | 2026-02-20 |
|
Burke Kathleen Flaherty
EVP, GC & Secretary
|
— | $1.1M | 2026-02-20 |
|
Schreiner James Alan
EVP & COO
|
— | $1.0M | 2026-02-24 |
|
Taranto Eric Robert
EVP & GM, VSD
|
— | $1.4M | 2026-03-06 |
|
Henry David Philip
EVP, Global Str Mktg & GM, MSD
|
— | $523K | 2026-02-20 |
|
Mayampurath Ramakumar
EVP & CFO
|
— | — | 2026-02-17 |