Form 4 for MKSI MKS INC
Accepted 2025-04-17 00:00:00 ET · period of report 2025-04-15 · accession 0001127602-25-012218 · 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 | 2025-04-17 | 2025-04-15 | MKSI | McCarthy Michelle M | VP, CAO | F - Tax | $68.48 | -608 | 1,466 | -29% | -$41.6K |
| DM | 2025-04-17 | 2025-04-15 | MKSI | McCarthy Michelle M | VP, CAO | M - OptEx | — | +2,074 | 968 | New | — |
| DM | 2025-04-17 | 2025-04-15 | MKSI | McCarthy Michelle M | VP, CAO | M - OptEx | — | -2,074 | 4,316 | -32% | — |
| D | 2025-04-17 | 2025-04-15 | MKSI | McCarthy Michelle M | VP, CAO | A - Grant | — | +5,210 | 9,526 | +121% | — |
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 | 2025-04-15 | F | D | 608 | $68.48 | 1,466 | D | — | — | |
| 2 | Common | Common Stock | 2025-04-15 | M | A | 1,106 | — | 2,074 | D | — | — | (F1) Each restricted stock unit (RSU) represents the contingent right to receive one share of common stock of MKS Instruments, Inc. |
| 3 | Common | Common Stock | 2025-04-15 | M | A | 968 | — | 968 | D | — | — | (F1) Each restricted stock unit (RSU) represents the contingent right to receive one share of common stock of MKS Instruments, Inc. |
| 4 | Derivative | Restricted Stock Unit | 2025-04-15 | M | D | 968 | — | 5,422.41 | D | — · — to — | 968 Common Stock | (F1) Each restricted stock unit (RSU) represents the contingent right to receive one share of common stock of MKS Instruments, Inc. (F3) These RSUs vest in three equal annual installments commencing on April 15, 2025, provided that if, in any vesting year, April 15th is not a business day, such vesting shall occur on the next business day. |
| 5 | Derivative | Restricted Stock Unit | 2025-04-15 | M | D | 1,106 | — | 4,316.41 | D | — · — to — | 1,106 Common Stock | (F1) Each restricted stock unit (RSU) represents the contingent right to receive one share of common stock of MKS Instruments, Inc. (F3) These RSUs vest in three equal annual installments commencing on April 15, 2025, provided that if, in any vesting year, April 15th is not a business day, such vesting shall occur on the next business day. |
| 6 | Derivative | Restricted Stock Unit | 2025-04-15 | A | A | 5,209.88 | — | 9,526.30 | D | — · — to — | 5,209.88 Common Stock | (F1) Each restricted stock unit (RSU) represents the contingent right to receive one share of common stock of MKS Instruments, Inc. (F4) These RSUs vest in three equal annual installments commencing on April 15, 2026, provided that if, in any vesting year, April 15th is not a business day, such vesting shall occur on the next business day. |