Cover |
12 Months Ended |
|---|---|
Sep. 27, 2024 | |
| Document Information [Line Items] | |
| Document Type | DEF 14A |
| Amendment Flag | false |
| Entity Information [Line Items] | |
| Entity Registrant Name | AMENTUM HOLDINGS, INC. |
| Entity Central Index Key | 0002011286 |
Pay vs Performance Disclosure number in Millions |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Sep. 27, 2024
USD ($)
| |||||||||||||||||||||||||||||||||||||||||||||
| Pay vs Performance Disclosure | |||||||||||||||||||||||||||||||||||||||||||||
| Pay vs Performance Disclosure, Table |
|
||||||||||||||||||||||||||||||||||||||||||||
| Company Selected Measure Name | Pro Forma Adjusted EBITDA | ||||||||||||||||||||||||||||||||||||||||||||
| Named Executive Officers, Footnote | Mr. Heller was the CEO in fiscal year 2024. He did not receive any equity awards in 2024.Messrs. Demetriou, Arnette, Johnson and Mullen were the non-CEO named executive officers for fiscal year 2024. | ||||||||||||||||||||||||||||||||||||||||||||
| PEO Total Compensation Amount | $ 2,782,479 | ||||||||||||||||||||||||||||||||||||||||||||
| PEO Actually Paid Compensation Amount | $ 2,782,479 | ||||||||||||||||||||||||||||||||||||||||||||
| Adjustment To PEO Compensation, Footnote | Amounts in this column represent the Summary Compensation Total plus the fair value of equity awards at year-end for awards granted in the year, the change in fair value of equity awards at year-end (from the end of the prior year) for equity awards granted in previous years, the fair value of equity awards on the vest date for equity awards which were granted and vested in the year, and the change in fair value of equity awards at year-end (from the vest date) for equity awards which vested in the year, as applicable. For a reconciliation, see the table below.
|
||||||||||||||||||||||||||||||||||||||||||||
| Non-PEO NEO Average Total Compensation Amount | $ 2,801,993 | ||||||||||||||||||||||||||||||||||||||||||||
| Non-PEO NEO Average Compensation Actually Paid Amount | $ 2,801,993 | ||||||||||||||||||||||||||||||||||||||||||||
| Adjustment to Non-PEO NEO Compensation Footnote | Amounts in this column represent the Summary Compensation Total plus the fair value of equity awards at year-end for awards granted in the year, the change in fair value of equity awards at year-end (from the end of the prior year) for equity awards granted in previous years, the fair value of equity awards on the vest date for equity awards which were granted and vested in the year, and the change in fair value of equity awards at year-end (from the vest date) for equity awards which vested in the year, as applicable. For a reconciliation, see the table below.
|
||||||||||||||||||||||||||||||||||||||||||||
| Tabular List, Table |
|
||||||||||||||||||||||||||||||||||||||||||||
| Net Income (Loss) | $ (82,000,000) | ||||||||||||||||||||||||||||||||||||||||||||
| Company Selected Measure Amount | 1,052 | ||||||||||||||||||||||||||||||||||||||||||||
| PEO Name | Mr. Heller was the CEO in fiscal year 2024. He did not receive any equity awards in 2024. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional 402(v) Disclosure | Amentum’s 2024 TSR cannot be calculated for fiscal year 2024 because the Company’s stock did not begin trading until fiscal year 2025. Peer group TSR is also excluded as it is not relevant for 2024 comparison purposes. Based on net income, determined in accordance with generally accepted accounting principles, as shown in our financial statements.Amentum has only one year of CAP as a standalone publicly-traded company and, as of September 27, 2024, no trading history. This limits our narrative description regarding the relationships of CAP to various performance measures, as we do not yet have year-over-year comparisons of CAP to financial measures or TSR. We expect to further expand our narrative descriptions regarding CAP and performance measures in future years.
|
||||||||||||||||||||||||||||||||||||||||||||
| Measure:: 1 | |||||||||||||||||||||||||||||||||||||||||||||
| Pay vs Performance Disclosure | |||||||||||||||||||||||||||||||||||||||||||||
| Name | STI Adjusted EBITDA | ||||||||||||||||||||||||||||||||||||||||||||
| Non-GAAP Measure Description | Pro Forma Adjusted EBITDA is the Company-selected measure for fiscal year 2024 for purposes of this table. | ||||||||||||||||||||||||||||||||||||||||||||
| Measure:: 2 | |||||||||||||||||||||||||||||||||||||||||||||
| Pay vs Performance Disclosure | |||||||||||||||||||||||||||||||||||||||||||||
| Name | Days Sales Outstanding (DSO) | ||||||||||||||||||||||||||||||||||||||||||||
| PEO | Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested | |||||||||||||||||||||||||||||||||||||||||||||
| Pay vs Performance Disclosure | |||||||||||||||||||||||||||||||||||||||||||||
| Adjustment to Compensation, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| PEO | Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested | |||||||||||||||||||||||||||||||||||||||||||||
| Pay vs Performance Disclosure | |||||||||||||||||||||||||||||||||||||||||||||
| Adjustment to Compensation, Amount | 0 | ||||||||||||||||||||||||||||||||||||||||||||
| PEO | Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year | |||||||||||||||||||||||||||||||||||||||||||||
| Pay vs Performance Disclosure | |||||||||||||||||||||||||||||||||||||||||||||
| Adjustment to Compensation, Amount | 0 | ||||||||||||||||||||||||||||||||||||||||||||
| PEO | Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year | |||||||||||||||||||||||||||||||||||||||||||||
| Pay vs Performance Disclosure | |||||||||||||||||||||||||||||||||||||||||||||
| Adjustment to Compensation, Amount | 0 | ||||||||||||||||||||||||||||||||||||||||||||
| PEO | Aggregate Grant Date Fair Value Of Option Award Amounts Reported in Summary Compensation Table [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Pay vs Performance Disclosure | |||||||||||||||||||||||||||||||||||||||||||||
| Adjustment to Compensation, Amount | 0 | ||||||||||||||||||||||||||||||||||||||||||||
| PEO | Aggregate Grant Date Fair Value Of Stock Award Amounts Reported in Summary Compensation Table [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Pay vs Performance Disclosure | |||||||||||||||||||||||||||||||||||||||||||||
| Adjustment to Compensation, Amount | 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Non-PEO NEO | Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested | |||||||||||||||||||||||||||||||||||||||||||||
| Pay vs Performance Disclosure | |||||||||||||||||||||||||||||||||||||||||||||
| Adjustment to Compensation, Amount | 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Non-PEO NEO | Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested | |||||||||||||||||||||||||||||||||||||||||||||
| Pay vs Performance Disclosure | |||||||||||||||||||||||||||||||||||||||||||||
| Adjustment to Compensation, Amount | 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Non-PEO NEO | Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year | |||||||||||||||||||||||||||||||||||||||||||||
| Pay vs Performance Disclosure | |||||||||||||||||||||||||||||||||||||||||||||
| Adjustment to Compensation, Amount | 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Non-PEO NEO | Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year | |||||||||||||||||||||||||||||||||||||||||||||
| Pay vs Performance Disclosure | |||||||||||||||||||||||||||||||||||||||||||||
| Adjustment to Compensation, Amount | 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Non-PEO NEO | Aggregate Grant Date Fair Value Of Option Award Amounts Reported in Summary Compensation Table [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Pay vs Performance Disclosure | |||||||||||||||||||||||||||||||||||||||||||||
| Adjustment to Compensation, Amount | 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Non-PEO NEO | Aggregate Grant Date Fair Value Of Stock Award Amounts Reported in Summary Compensation Table [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Pay vs Performance Disclosure | |||||||||||||||||||||||||||||||||||||||||||||
| Adjustment to Compensation, Amount | $ 0 |
Insider Trading Policies and Procedures |
12 Months Ended |
|---|---|
Sep. 27, 2024 | |
| Insider Trading Policies and Procedures [Line Items] | |
| Insider Trading Policies and Procedures Adopted | true |