---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-26-055294"
form_type: "8-K"
ticker: "AMTM"
cik: "0002011286"
company_name: "Amentum Holdings, Inc."
filed_at: "2026-08-10T20:42:44+00:00"
generated_at: "2026-08-10T20:44:06.373882+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Amentum Q3 FY26: Net income up 560% to $66M; raises Adjusted EBITDA and EPS guidance

## Summary
- Revenue $3.490B, down 2% YoY; operating income $172M up 67%; net income $66M up 560%.
- Adjusted EBITDA $290M (up 6%); adjusted diluted EPS $0.67 (up 20%); free cash flow $135M (up 35%).
- Backlog $48.2B; book-to-bill 1.1x Q, 1.3x LTM; CEO cites strong wins in global nuclear energy.
- Company raises FY26 Adjusted EBITDA and Adjusted Diluted EPS guidance despite near-term revenue headwinds.

## SEC filing metadata
- accession: 0001628280-26-055294
- form_type: 8-K
- ticker: AMTM
- cik: 0002011286
- company_name: Amentum Holdings, Inc.
- filed_at: 2026-08-10T20:42:44+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/2011286/000162828026055294/0001628280-26-055294-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/2011286/000162828026055294/amtm-20260810.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-26-055294
- JSON: https://secwatch.observer/filing/0001628280-26-055294.json
- Plain text: https://secwatch.observer/filing/0001628280-26-055294.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.