Form 4 for AMTM Amentum Holdings, Inc.
Accepted 2026-01-29 00:00:00 ET · period of report 2026-01-28 · accession 0001628280-26-004144 · 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 | 2026-01-29 | 2026-01-28 | AMTM | Heller John E. | CEO, Dir | M - OptEx | — | +52.0K | 385.8K | +16% | — |
| D | 2026-01-29 | 2026-01-28 | AMTM | Heller John E. | CEO, Dir | F - Tax | $35.71 | -19.8K | 366.1K | -5% | -$705.9K |
| D | 2026-01-29 | 2026-01-28 | AMTM | Heller John E. | CEO, Dir | M - OptEx | $0.00 | -52.0K | 104.0K | -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 | 2026-01-28 | M | A | 51,979 | — | 385,826 | D | — | — | (F1) Represents distribution of AMTM common stock upon vesting of restricted stock units. |
| 2 | Common | Common Stock | 2026-01-28 | F | D | 19,768 | $35.71 | 366,058 | 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 | 2026-01-28 | M | D | 51,979 | $0.00 | 103,959 | D | — · — to — | 51,979 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 January 28, 2026. |