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Reporting owner

Arnette Stephen A

Reporting owner CIK 0001919492 · Chief Operating Officer

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These transactions appear in filings associated with this reporting owner. Jointly reported quantities and amounts are unallocated; they are not this owner's individual purchases or total holdings. Names and roles reflect the relevant filing, and a reporting owner may be a person or an organization.

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Transaction timeline

Who reported an acquisition, and when the transaction occurred.

Reported acquisitions by transaction dateEach row is a reporting owner. Select a marker to open its transaction details. Jointly reported transactions appear for each associated reporting owner, without dividing quantities or amounts.Arnette Stephen AArnette Stephen AArnette Stephen A · November 16, 2025 · Exercise / conversion · Common StockArnette Stephen A · November 16, 2025 · Exercise / conversion · Common StockArnette Stephen A · November 16, 2025 · Exercise / conversion · Common StockArnette Stephen A · November 15, 2025 · Exercise / conversion · Common StockArnette Stephen A · November 6, 2025 · Exercise / conversion · Common StockNov 6, 2025Nov 16, 2025
PurchaseStock awardGift receivedExercise / conversionConversionOther acquisition

5 dated transactions · 1 of 1 reporting owners shown. Select one owner to focus the chart.

View timeline as a table
Transaction dateCompany / securityReporting ownersAcquisition type
Nov 16, 2025Amentum Holdings, Inc.Common StockArnette Stephen AExercise / conversion
Nov 16, 2025Amentum Holdings, Inc.Common StockArnette Stephen AExercise / conversion
Nov 16, 2025Amentum Holdings, Inc.Common StockArnette Stephen AExercise / conversion
Nov 15, 2025Amentum Holdings, Inc.Common StockArnette Stephen AExercise / conversion
Nov 6, 2025Amentum Holdings, Inc.Common StockArnette Stephen AExercise / conversion

Only transactions on this page are shown. Date windows end on the latest transaction date in this sample. Joint filings may appear on more than one row. Sales are not included. Share-price charts use a separate data source.

Transactions in associated filings

Reported insider acquisitions, ordered by filing date, newest first. Currency is shown only when reported.
Filed / transactedCompanyReporting ownersType / securityQuantityPrice / reference valueDetails
Trade: Amentum Holdings, Inc.AMTM · company listings
Arnette Stephen AChief Operating Officer
Exercise / conversionCommon StockNon-derivative security · Code M4,596Not reported *Value: Not reportedCurrency not specifiedView ↗
Trade: Amentum Holdings, Inc.AMTM · company listings
Arnette Stephen AChief Operating Officer
Exercise / conversionCommon StockNon-derivative security · Code M3,681Not reported *Value: Not reportedCurrency not specifiedView ↗
Trade: Amentum Holdings, Inc.AMTM · company listings
Arnette Stephen AChief Operating Officer
Exercise / conversionCommon StockNon-derivative security · Code M5,053Not reported *Value: Not reportedCurrency not specifiedView ↗
Trade: Amentum Holdings, Inc.AMTM · company listings
Arnette Stephen AChief Operating Officer
Exercise / conversionCommon StockNon-derivative security · Code M5,758Not reported *Value: Not reportedCurrency not specifiedView ↗
Trade: Amentum Holdings, Inc.AMTM · company listings
Arnette Stephen AChief Operating Officer
Exercise / conversionCommon StockNon-derivative security · Code M12,701Not reported *Value: Not reportedCurrency not specifiedView ↗