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Reporting owner

Mullen Sean Thomas

Reporting owner CIK 0002034388 · Chief Growth 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.Mullen Sean ThomasMullen Sean ThomasMullen Sean Thomas · December 17, 2025 · Exercise / conversion · Common StockMullen Sean Thomas · November 17, 2025 · Stock award · Common StockMullen Sean Thomas · November 6, 2025 · Exercise / conversion · Common StockNov 6, 2025Dec 17, 2025
PurchaseStock awardGift receivedExercise / conversionConversionOther acquisition

3 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
Dec 17, 2025Amentum Holdings, Inc.Common StockMullen Sean ThomasExercise / conversion
Nov 17, 2025Amentum Holdings, Inc.Common StockMullen Sean ThomasStock award
Nov 6, 2025Amentum Holdings, Inc.Common StockMullen Sean ThomasExercise / 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
Mullen Sean ThomasChief Growth Officer
Exercise / conversionCommon StockNon-derivative security · Code M9,298Not reported *Value: Not reportedCurrency not specifiedView ↗
Trade: Amentum Holdings, Inc.AMTM · company listings
Mullen Sean ThomasChief Growth Officer
Stock awardCommon StockNon-derivative security · Code A17,8170Value: 0Currency not specifiedView ↗
Trade: Amentum Holdings, Inc.AMTM · company listings
Mullen Sean ThomasChief Growth Officer
Exercise / conversionCommon StockNon-derivative security · Code M4,838Not reported *Value: Not reportedCurrency not specifiedView ↗