Form 4 for MKSI MKS INC
Accepted 2025-08-19 00:00:00 ET · period of report 2025-08-18 · accession 0001049502-25-000023 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| D | 2025-08-19 | 2025-08-18 | MKSI | Schreiner James Alan | EVP, COO | M - OptEx | — | +2,641 | 25.3K | +12% | — |
| D | 2025-08-19 | 2025-08-18 | MKSI | Schreiner James Alan | EVP, COO | F - Tax | $100.22 | -1,249 | 24.1K | -5% | -$125.2K |
| D | 2025-08-19 | 2025-08-18 | MKSI | Schreiner James Alan | EVP, COO | M - OptEx | — | -2,641 | 13.0K | -17% | — |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2025-08-18 | M | A | 2,640.94 | — | 25,332.69 | D | — | — | (F1) Each restricted stock unit (RSU) represents the contingent right to receive one share of common stock of MKS Inc. |
| 2 | Common | Common Stock | 2025-08-18 | F | D | 1,249 | $100.22 | 24,083.69 | D | — | — | |
| 3 | Derivative | Restricted Stock Unit | 2025-08-18 | M | D | 2,640.94 | — | 13,018.14 | D | — · — to — | 2,640.94 Common Stock | (F1) Each restricted stock unit (RSU) represents the contingent right to receive one share of common stock of MKS Inc. (F3) These RSUs vest in two installments, 60% of which shall vest on August 17, 2024 and 40% of which shall vest on August 17, 2025; provided that if, in any vesting year, August 17th is not a business day, such vesting shall occur on the next business day. |