Form 4 for AMTM Amentum Holdings, Inc.
Accepted 2025-12-09 00:00:00 ET · period of report 2025-12-05 · accession 0001628280-25-056097 · 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 | 2025-12-09 | 2025-12-05 | AMTM | Burton Darren | CHRO | M - OptEx | — | +2,721 | 25.0K | +12% | — |
| D | 2025-12-09 | 2025-12-05 | AMTM | Burton Darren | CHRO | F - Tax | $28.88 | -1,392 | 23.6K | -6% | -$40.2K |
| D | 2025-12-09 | 2025-12-05 | AMTM | Burton Darren | CHRO | M - OptEx | $0.00 | -2,721 | 5,444 | -33% | $0 |
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 | 2025-12-05 | M | A | 2,721 | — | 24,992 | D | — | — | (F1) Represents distribution of AMTM common stock upon vesting of restricted stock units. |
| 2 | Common | Common Stock | 2025-12-05 | F | D | 1,392 | $28.88 | 23,600 | D | — | — | (F2) Represents number of shares of AMTM common stock tendered for tax withholding upon vesting of restricted stock units. |
| 3 | Derivative | Restricted Stock Units | 2025-12-05 | M | D | 2,721 | $0.00 | 5,444 | D | — · — to — | 2,721 Common Stock | (F3) Each restricted stock unit represents a contingent right to receive one share of AMTM common stock. (F4) The restricted stock units awarded vested on December 5, 2025. |