Listed

Amentum Holdings, Inc.

AMTMNYSECIK 2011286IndustrialsFiscal year ends Oct 2

Latest reported revenue, Q3 FY2026$3.49bnRevenue, Q3 FY2026, three months to 2026-07-03$3.49bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-08-11, accession 0001628280-26-055727.Report this figureThree months to Jul 3, 2026, from the 10-Q filed Aug 11, 2026.

Latest quarter: Q3 FY2026

Three months to Jul 3, 2026, against the same quarter a year earlier.

  • Revenue$3.49bnRevenue, Q3 FY2026, three months to 2026-07-03$3.49bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-08-11, accession 0001628280-26-055727.Report this figure−2.0% on a year earlier
  • Gross marginnot reported (Gross profit not reported)No year-earlier figure to compare
  • Operating margin4.9%Operating margin, Q3 FY2026, three months to 2026-07-03. operating income / revenueOperating income: $172.0m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2026-08-11, accession 0001628280-26-055727.Revenue: $3.49bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-08-11, accession 0001628280-26-055727.Report this figure+2.0 pts on a year earlier
  • Net margin1.9%Net margin, Q3 FY2026, three months to 2026-07-03. net income / revenueNet income: $66.0m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-08-11, accession 0001628280-26-055727.Revenue: $3.49bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-08-11, accession 0001628280-26-055727.Report this figure+1.6 pts on a year earlier
  • Diluted EPS$0.27Diluted EPS, Q3 FY2026, three months to 2026-07-03$0.27 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-08-11, accession 0001628280-26-055727.Report this figure+575.0% on a year earlier
  • Free cash flow$135.0mFree cash flow, Q3 FY2026, three months to 2026-07-03. operating cash flow − capital expenditureOperating cash flow: $146.0m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2026-08-11, accession 0001628280-26-055727. Derived: 9-month figure less the 6-month figure.Capital expenditure: $11.0m. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2026-08-11, accession 0001628280-26-055727. Derived: 9-month figure less the 6-month figure.Report this figure+35.0% on a year earlier

Last eight quarters

Full statements
Revenue$3.49bnOperating margin 4.9%
Diluted EPS$0.27, Q3 FY2026
Free cash flow$135.0m, Q3 FY2026
Amentum Holdings, Inc., key figures for the last eight quarters
Line itemUnitQ4 FY20242024-09-27Q1 FY20252024-12-27Q2 FY20252025-03-28Q3 FY20252025-06-27Q4 FY20252025-10-03Q1 FY20262026-01-02Q2 FY20262026-04-03Q3 FY20262026-07-03Shape over the periods
Revenue$m2,212Revenue, Q4 FY2024, three months to 2024-09-27$2.21bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2025-11-25, accession 0001628280-25-053993. Derived: 12-month figure less the 9-month figure.Report this figure3,416Revenue, Q1 FY2025, three months to 2024-12-27$3.42bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-02-10, accession 0001628280-26-006676.Report this figure3,491Revenue, Q2 FY2025, three months to 2025-03-28$3.49bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-05-12, accession 0001628280-26-034156.Report this figure3,561Revenue, Q3 FY2025, three months to 2025-06-27$3.56bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-08-11, accession 0001628280-26-055727.Report this figure3,925Revenue, Q4 FY2025, three months to 2025-10-03$3.92bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2025-11-25, accession 0001628280-25-053993. Derived: 12-month figure less the 9-month figure.Report this figure3,237Revenue, Q1 FY2026, three months to 2026-01-02$3.24bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-02-10, accession 0001628280-26-006676.Report this figure3,478Revenue, Q2 FY2026, three months to 2026-04-03$3.48bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-05-12, accession 0001628280-26-034156.Report this figure3,490Revenue, Q3 FY2026, three months to 2026-07-03$3.49bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-08-11, accession 0001628280-26-055727.Report this figure
Gross margin%not reported (Gross profit not reported)not reported (Gross profit not reported)not reported (Gross profit not reported)not reported (Gross profit not reported)not reported (Gross profit not reported)not reported (Gross profit not reported)not reported (Gross profit not reported)not reported (Gross profit not reported)
Operating margin%1.2%Operating margin, Q4 FY2024, three months to 2024-09-27. operating income / revenueOperating income: $27.0m. XBRL concept us-gaap:OperatingIncomeLoss. 10-K filed 2025-11-25, accession 0001628280-25-053993. Derived: 12-month figure less the 9-month figure.Revenue: $2.21bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2025-11-25, accession 0001628280-25-053993. Derived: 12-month figure less the 9-month figure.Report this figure3.9%Operating margin, Q1 FY2025, three months to 2024-12-27. operating income / revenueOperating income: $132.0m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2026-02-10, accession 0001628280-26-006676.Revenue: $3.42bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-02-10, accession 0001628280-26-006676.Report this figure3.2%Operating margin, Q2 FY2025, three months to 2025-03-28. operating income / revenueOperating income: $110.0m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2026-05-12, accession 0001628280-26-034156.Revenue: $3.49bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-05-12, accession 0001628280-26-034156.Report this figure2.9%Operating margin, Q3 FY2025, three months to 2025-06-27. operating income / revenueOperating income: $103.0m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2026-08-11, accession 0001628280-26-055727.Revenue: $3.56bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-08-11, accession 0001628280-26-055727.Report this figure3.4%Operating margin, Q4 FY2025, three months to 2025-10-03. operating income / revenueOperating income: $135.0m. XBRL concept us-gaap:OperatingIncomeLoss. 10-K filed 2025-11-25, accession 0001628280-25-053993. Derived: 12-month figure less the 9-month figure.Revenue: $3.92bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2025-11-25, accession 0001628280-25-053993. Derived: 12-month figure less the 9-month figure.Report this figure4.3%Operating margin, Q1 FY2026, three months to 2026-01-02. operating income / revenueOperating income: $138.0m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2026-02-10, accession 0001628280-26-006676.Revenue: $3.24bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-02-10, accession 0001628280-26-006676.Report this figure4.3%Operating margin, Q2 FY2026, three months to 2026-04-03. operating income / revenueOperating income: $151.0m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2026-05-12, accession 0001628280-26-034156.Revenue: $3.48bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-05-12, accession 0001628280-26-034156.Report this figure4.9%Operating margin, Q3 FY2026, three months to 2026-07-03. operating income / revenueOperating income: $172.0m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2026-08-11, accession 0001628280-26-055727.Revenue: $3.49bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-08-11, accession 0001628280-26-055727.Report this figure
Net margin%1.2%Net margin, Q4 FY2024, three months to 2024-09-27. net income / revenueNet income: $26.0m. XBRL concept us-gaap:NetIncomeLoss. 10-K filed 2025-11-25, accession 0001628280-25-053993. Derived: 12-month figure less the 9-month figure.Revenue: $2.21bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2025-11-25, accession 0001628280-25-053993. Derived: 12-month figure less the 9-month figure.Report this figure0.4%Net margin, Q1 FY2025, three months to 2024-12-27. net income / revenueNet income: $12.0m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-02-10, accession 0001628280-26-006676.Revenue: $3.42bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-02-10, accession 0001628280-26-006676.Report this figure0.1%Net margin, Q2 FY2025, three months to 2025-03-28. net income / revenueNet income: $4.0m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-05-12, accession 0001628280-26-034156.Revenue: $3.49bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-05-12, accession 0001628280-26-034156.Report this figure0.3%Net margin, Q3 FY2025, three months to 2025-06-27. net income / revenueNet income: $10.0m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-08-11, accession 0001628280-26-055727.Revenue: $3.56bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-08-11, accession 0001628280-26-055727.Report this figure1.0%Net margin, Q4 FY2025, three months to 2025-10-03. net income / revenueNet income: $40.0m. XBRL concept us-gaap:NetIncomeLoss. 10-K filed 2025-11-25, accession 0001628280-25-053993. Derived: 12-month figure less the 9-month figure.Revenue: $3.92bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2025-11-25, accession 0001628280-25-053993. Derived: 12-month figure less the 9-month figure.Report this figure1.4%Net margin, Q1 FY2026, three months to 2026-01-02. net income / revenueNet income: $44.0m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-02-10, accession 0001628280-26-006676.Revenue: $3.24bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-02-10, accession 0001628280-26-006676.Report this figure1.6%Net margin, Q2 FY2026, three months to 2026-04-03. net income / revenueNet income: $54.0m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-05-12, accession 0001628280-26-034156.Revenue: $3.48bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-05-12, accession 0001628280-26-034156.Report this figure1.9%Net margin, Q3 FY2026, three months to 2026-07-03. net income / revenueNet income: $66.0m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-08-11, accession 0001628280-26-055727.Revenue: $3.49bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-08-11, accession 0001628280-26-055727.Report this figure
Diluted EPS$ per sharenot reported (Diluted EPS not reported)0.05Diluted EPS, Q1 FY2025, three months to 2024-12-27$0.05 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-02-10, accession 0001628280-26-006676.Report this figure0.02Diluted EPS, Q2 FY2025, three months to 2025-03-28$0.02 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-05-12, accession 0001628280-26-034156.Report this figure0.04Diluted EPS, Q3 FY2025, three months to 2025-06-27$0.04 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-08-11, accession 0001628280-26-055727.Report this figurenot reported (Diluted EPS not reported)0.18Diluted EPS, Q1 FY2026, three months to 2026-01-02$0.18 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-02-10, accession 0001628280-26-006676.Report this figure0.22Diluted EPS, Q2 FY2026, three months to 2026-04-03$0.22 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-05-12, accession 0001628280-26-034156.Report this figure0.27Diluted EPS, Q3 FY2026, three months to 2026-07-03$0.27 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-08-11, accession 0001628280-26-055727.Report this figure
Free cash flow$m(117)Free cash flow, Q4 FY2024, three months to 2024-09-27. operating cash flow − capital expenditureOperating cash flow: −$113.0m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-K filed 2025-11-25, accession 0001628280-25-053993. Derived: 12-month figure less the 9-month figure.Capital expenditure: $4.0m. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-K filed 2025-11-25, accession 0001628280-25-053993. Derived: 12-month figure less the 9-month figure.Report this figure102Free cash flow, Q1 FY2025, three months to 2024-12-27. operating cash flow − capital expenditureOperating cash flow: $110.0m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2026-02-10, accession 0001628280-26-006676.Capital expenditure: $8.0m. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2026-02-10, accession 0001628280-26-006676.Report this figure53.0Free cash flow, Q2 FY2025, three months to 2025-03-28. operating cash flow − capital expenditureOperating cash flow: $57.0m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2026-05-12, accession 0001628280-26-034156. Derived: 6-month figure less the 3-month figure.Capital expenditure: $4.0m. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2026-05-12, accession 0001628280-26-034156. Derived: 6-month figure less the 3-month figure.Report this figure100Free cash flow, Q3 FY2025, three months to 2025-06-27. operating cash flow − capital expenditureOperating cash flow: $106.0m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2026-08-11, accession 0001628280-26-055727. Derived: 9-month figure less the 6-month figure.Capital expenditure: $6.0m. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2026-08-11, accession 0001628280-26-055727. Derived: 9-month figure less the 6-month figure.Report this figure261Free cash flow, Q4 FY2025, three months to 2025-10-03. operating cash flow − capital expenditureOperating cash flow: $270.0m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-K filed 2025-11-25, accession 0001628280-25-053993. Derived: 12-month figure less the 9-month figure.Capital expenditure: $9.0m. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-K filed 2025-11-25, accession 0001628280-25-053993. Derived: 12-month figure less the 9-month figure.Report this figure(142)Free cash flow, Q1 FY2026, three months to 2026-01-02. operating cash flow − capital expenditureOperating cash flow: −$136.0m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2026-02-10, accession 0001628280-26-006676.Capital expenditure: $6.0m. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2026-02-10, accession 0001628280-26-006676.Report this figure220Free cash flow, Q2 FY2026, three months to 2026-04-03. operating cash flow − capital expenditureOperating cash flow: $225.0m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2026-05-12, accession 0001628280-26-034156. Derived: 6-month figure less the 3-month figure.Capital expenditure: $5.0m. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2026-05-12, accession 0001628280-26-034156. Derived: 6-month figure less the 3-month figure.Report this figure135Free cash flow, Q3 FY2026, three months to 2026-07-03. operating cash flow − capital expenditureOperating cash flow: $146.0m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2026-08-11, accession 0001628280-26-055727. Derived: 9-month figure less the 6-month figure.Capital expenditure: $11.0m. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2026-08-11, accession 0001628280-26-055727. Derived: 9-month figure less the 6-month figure.Report this figure

Focus or hover a figure to see its XBRL concept, period and filing; each links to that filing. A figure marked d is derived: a quarter computed from year-to-date figures, such as the fourth quarter as the fiscal year less the nine months before it. A ratio reads not reported when any input is missing.

Last five fiscal years

Revenue$14.39bnOperating margin 3.3%
Diluted EPS$0.27, FY2025
Free cash flow$516.0m, FY2025
Amentum Holdings, Inc., key figures for the last five fiscal years
Line itemUnitFY2022-09-30FY2023-09-29FY20242024-09-27FY20252025-10-03Shape over the periods
Revenue$bn7.7Revenue, period not labelled, twelve months to 2022-09-30$7.68bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2024-12-17, accession 0002011286-24-000072.Report this figure7.9Revenue, period not labelled, twelve months to 2023-09-29$7.87bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2025-11-25, accession 0001628280-25-053993.Report this figure8.4Revenue, FY2024, twelve months to 2024-09-27$8.39bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2025-11-25, accession 0001628280-25-053993.Report this figure14.4Revenue, FY2025, twelve months to 2025-10-03$14.39bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2025-11-25, accession 0001628280-25-053993.Report this figure
Gross margin%not reported (Gross profit not reported)not reported (Gross profit not reported)not reported (Gross profit not reported)not reported (Gross profit not reported)
Operating margin%1.6%Operating margin, period not labelled, twelve months to 2022-09-30. operating income / revenueOperating income: $121.0m. XBRL concept us-gaap:OperatingIncomeLoss. 10-K filed 2024-12-17, accession 0002011286-24-000072.Revenue: $7.68bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2024-12-17, accession 0002011286-24-000072.Report this figure0.7%Operating margin, period not labelled, twelve months to 2023-09-29. operating income / revenueOperating income: $57.0m. XBRL concept us-gaap:OperatingIncomeLoss. 10-K filed 2025-11-25, accession 0001628280-25-053993.Revenue: $7.87bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2025-11-25, accession 0001628280-25-053993.Report this figure3.5%Operating margin, FY2024, twelve months to 2024-09-27. operating income / revenueOperating income: $291.0m. XBRL concept us-gaap:OperatingIncomeLoss. 10-K filed 2025-11-25, accession 0001628280-25-053993.Revenue: $8.39bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2025-11-25, accession 0001628280-25-053993.Report this figure3.3%Operating margin, FY2025, twelve months to 2025-10-03. operating income / revenueOperating income: $480.0m. XBRL concept us-gaap:OperatingIncomeLoss. 10-K filed 2025-11-25, accession 0001628280-25-053993.Revenue: $14.39bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2025-11-25, accession 0001628280-25-053993.Report this figure
Net margin%(1.1%)Net margin, period not labelled, twelve months to 2022-09-30. net income / revenueNet income: −$84.0m. XBRL concept us-gaap:NetIncomeLoss. 10-K filed 2024-12-17, accession 0002011286-24-000072.Revenue: $7.68bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2024-12-17, accession 0002011286-24-000072.Report this figure(4.0%)Net margin, period not labelled, twelve months to 2023-09-29. net income / revenueNet income: −$314.0m. XBRL concept us-gaap:NetIncomeLoss. 10-K filed 2025-11-25, accession 0001628280-25-053993.Revenue: $7.87bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2025-11-25, accession 0001628280-25-053993.Report this figure(1.0%)Net margin, FY2024, twelve months to 2024-09-27. net income / revenueNet income: −$82.0m. XBRL concept us-gaap:NetIncomeLoss. 10-K filed 2025-11-25, accession 0001628280-25-053993.Revenue: $8.39bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2025-11-25, accession 0001628280-25-053993.Report this figure0.5%Net margin, FY2025, twelve months to 2025-10-03. net income / revenueNet income: $66.0m. XBRL concept us-gaap:NetIncomeLoss. 10-K filed 2025-11-25, accession 0001628280-25-053993.Revenue: $14.39bn. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2025-11-25, accession 0001628280-25-053993.Report this figure
Diluted EPS$ per share(0.93)Diluted EPS, period not labelled, twelve months to 2022-09-30−$0.93 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-K filed 2024-12-17, accession 0002011286-24-000072.Report this figure(3.49)Diluted EPS, period not labelled, twelve months to 2023-09-29−$3.49 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-K filed 2025-11-25, accession 0001628280-25-053993.Report this figure(0.90)Diluted EPS, FY2024, twelve months to 2024-09-27−$0.90 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-K filed 2025-11-25, accession 0001628280-25-053993.Report this figure0.27Diluted EPS, FY2025, twelve months to 2025-10-03$0.27 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-K filed 2025-11-25, accession 0001628280-25-053993.Report this figure
Free cash flow$bn0.1Free cash flow, period not labelled, twelve months to 2022-09-30. operating cash flow − capital expenditureOperating cash flow: $126.0m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-K filed 2024-12-17, accession 0002011286-24-000072.Capital expenditure: $18.0m. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-K filed 2024-12-17, accession 0002011286-24-000072.Report this figure0.1Free cash flow, period not labelled, twelve months to 2023-09-29. operating cash flow − capital expenditureOperating cash flow: $67.0m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-K filed 2025-11-25, accession 0001628280-25-053993.Capital expenditure: $12.0m. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-K filed 2025-11-25, accession 0001628280-25-053993.Report this figure0.0Free cash flow, FY2024, twelve months to 2024-09-27. operating cash flow − capital expenditureOperating cash flow: $47.0m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-K filed 2025-11-25, accession 0001628280-25-053993.Capital expenditure: $11.0m. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-K filed 2025-11-25, accession 0001628280-25-053993.Report this figure0.5Free cash flow, FY2025, twelve months to 2025-10-03. operating cash flow − capital expenditureOperating cash flow: $543.0m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-K filed 2025-11-25, accession 0001628280-25-053993.Capital expenditure: $27.0m. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-K filed 2025-11-25, accession 0001628280-25-053993.Report this figure

Focus or hover a figure to see its XBRL concept, period and filing; each links to that filing. A figure marked d is derived: a quarter computed from year-to-date figures, such as the fourth quarter as the fiscal year less the nine months before it. A ratio reads not reported when any input is missing.

Insider purchases and sales

All insider transactions

The last 20 open-market transactions reported on Form 4 (codes P and S). The reported price is the price per share the insider stated on the form: filing data, not a market price.

No open-market purchases or sales by insiders are in coverage from Nov 2024 to Oct 2026.

No open-market purchases or sales by insiders are in coverage for this company.

Funds that report holding it

All funds

From each manager's latest Form 13F, largest reported value first. Reported value is as filed at the quarter end: filing data, not a price. A put or call is an option position, not shares held.

Funds that report holding Amentum Holdings, Inc.
FundQuarter endedReported valueSharesPut or callChange on the quarter before
AMERICAN SECURITIES LLC2026-06-30$930.7m45,026,743Unchanged
Invesco Ltd.2026-06-30$515.8m24,954,251Added+3,480,473
BlackRock, Inc.2026-06-30$370.1m17,906,984Added+65,701
PRIMECAP MANAGEMENT CO/CA/2026-06-30$253.9m12,285,504Added+200,210
VANGUARD PORTFOLIO MANAGEMENT LLC2026-06-30$164.3m7,948,385Added+95,434
VANGUARD CAPITAL MANAGEMENT LLC2026-06-30$138.7m6,711,987Added+61,108
FMR LLC2026-06-30$117.4m5,679,175Added+100,789
DIMENSIONAL FUND ADVISORS LP2026-06-30$114.5m5,537,696Added+1,750,276
STATE STREET CORP2026-06-30$106.5m5,151,772Added+72,731
FRONTIER CAPITAL MANAGEMENT CO LLC2026-06-30$85.7m4,143,971Reduced−786,239

Recent filings

All 182 filings

Reports and events: 10-K, 10-Q, 8-K, proxy statements and ownership schedules.

Amentum Holdings, Inc., recent filings
FiledFormWhat it isAccession number
2026-10-0220:19 ET8-K5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits0002011286-26-000026
2026-08-1120:25 ET10-QQuarterly reportPeriod 2026-07-030001628280-26-055727
2026-08-1020:42 ET8-K2.02 Results of operations; 9.01 Financial statements and exhibits0001628280-26-055294
2026-05-1220:37 ET10-QQuarterly reportPeriod 2026-04-030001628280-26-034156
2026-05-1121:05 ET8-K2.02 Results of operations; 9.01 Financial statements and exhibits0001628280-26-033648
2026-04-2812:01 ET8-K1.01 Entry into a material agreement0002011286-26-000011
2026-02-1014:41 ET8-K5.07 Shareholder vote results0001628280-26-006679
2026-02-1014:20 ET10-QQuarterly reportPeriod 2026-01-020001628280-26-006676
2026-02-0921:37 ET8-K2.02 Results of operations; 9.01 Financial statements and exhibits0001628280-26-006491
2025-12-1921:05 ETDEF 14AProxy statementPeriod 2026-02-060001104659-25-123111

Latest annual report

Form 10-K for the fiscal year ended Oct 3, 2025Filed Nov 25, 2025. Its page lists the documents and the extracted sections, such as Business and Risk factors.

Forecast league

Not in this season’s league. The league lists companies whose quarter has ended and whose results are not yet filed.This season’s league

About the filer

CIK
2011286
Tickers
AMTM
Exchange
NYSE
SIC code
7389 Services-Business Services, NEC
Sector
Industrials
Fiscal year ends
Oct 2
Incorporated in
DE
Filer category
Large accelerated filer
Former names
Amazon Holdco Inc. (to 2024-09-18)

Source: SEC EDGAR, XBRL company facts, the filing index and Forms 4. Last ingested by Listed: Oct 24, 2026, 15:50 ET. Listed shows no prices and gives no investment advice.