Quick Answer
Amentum Holdings, Inc. reported Shares Outstanding of 243.46 million shares for fiscal year 2025.
Amentum Holdings, Inc. Shares Outstanding — Annual History
| Fiscal Year | Shares Outstanding | YoY Change |
|---|---|---|
| 2025 | 243.46M | +0.1% |
| 2024 | 243.30M | — |
| 2023 | 0 | — |
Quarterly Shares Outstanding
| Quarter Ending | Shares Outstanding | YoY | QoQ |
|---|---|---|---|
| December 31, 2025 | 243.77M | +0.2% | +0.1% |
| September 30, 2025 | 243.46M | +0.1% | +0.1% |
| June 30, 2025 | 243.32M | — | +0.0% |
| March 31, 2025 | 243.32M | — | +0.0% |
| December 31, 2024 | 243.30M | — | +0.0% |
| September 30, 2024 | 243.30M | — | — |
- Amentum Holdings, Inc. showed an increase of +0.1% in Shares Outstanding compared to the prior fiscal year.
- The most recent figure is from Amentum Holdings, Inc.’s fiscal year 2025 report (Form 10-K), filed with the SEC on November 25, 2025.
- All figures are sourced from SEC EDGAR XBRL filings, last verified June 17, 2026.
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