LIVE FROM THE DATABASETRANSACTIONS 362,430COMPANIES 5,763LATEST TRADE Oct 16UPDATED Oct 17, 12:31 AM
AMTMCIK 0002011286

Amentum Holdings, Inc.

91 transactions by 15 insiders, from November 6, 2025 to August 14, 2026.

Transactions
9115 insiders
Bought · P
Nonenobody bought on the open market
Sold · S
Nonenobody sold on the open market
Net
+$0net buying

Officers and directors

People inside the company. What they do with their own shares is the reason this data exists.

InsiderTradesPlannedBoughtSold
Stephen A. ArnetteCOO25———
John E. HellerCEO10———
Sean Thomas MullenChief10———
Jill L. BruningCTO8———
Travis Barton JohnsonCFO7———
Steven J. DemetriouChair7———
Mary Michele T. St.GC4———
Darren BurtonChief4———
Sandra E. RowlandDir3———
Vincent K. BrooksDir3———
John C. VollmerDir3———
Ralph E. EberhartDir3———
Christopher M.T. ThompsonDir2———
Susan Leslie IrelandDir1———
Barbara LoughranDir1———

All transactions

91 in total, newest filings first.

InsiderDateCodeSharesPriceValue
Christopher M.T. ThompsonDirAug 14G4,250$0.00—
John E. HellerCEODERIVMay 6M18,145$0.00—?
John E. HellerCEOMay 6F8,184$24.89$204K
John E. HellerCEOMay 6M18,145——
Sean Thomas MullenChiefDERIVMay 6M9,072$0.00—?
Sean Thomas MullenChiefMay 6F2,762$24.89$69K
Sean Thomas MullenChiefMay 6M9,072——
Travis Barton JohnsonCFODERIVMay 6M13,609$0.00—?
Travis Barton JohnsonCFOMay 6F4,097$24.89$102K
Travis Barton JohnsonCFOMay 6M13,609——
Jill L. BruningCTODERIVMay 6M9,072$0.00—?
Jill L. BruningCTOMay 6F2,731$24.89$68K
Jill L. BruningCTOMay 6M9,072——
Stephen A. ArnetteCOODERIVMay 6M13,609$0.00—?
Stephen A. ArnetteCOOMay 6F3,314$24.89$82K
Stephen A. ArnetteCOOMay 6M13,609——
Jill L. BruningCTOMar 4G30,000$0.00—
Stephen A. ArnetteCOODERIVMar 2M2,808$0.00—?
Stephen A. ArnetteCOOMar 2F750$30.70$23K
Stephen A. ArnetteCOOMar 2M2,808——
Mary Michele T. St.GCDERIVFeb 17M7,080$0.00—?
Mary Michele T. St.GCFeb 17F2,308$30.05$69K
Mary Michele T. St.GCFeb 17M7,080——
Susan Leslie IrelandDirFeb 6A5,062$0.00—
Sandra E. RowlandDirDERIVFeb 6M11,564$0.00—?
Sandra E. RowlandDirFeb 6A5,062$0.00—
Sandra E. RowlandDirFeb 6M11,564——
Vincent K. BrooksDirDERIVFeb 6M11,564$0.00—?
Vincent K. BrooksDirFeb 6A5,062$0.00—
Vincent K. BrooksDirFeb 6M11,564——
Ralph E. EberhartDirDERIVFeb 6M11,564$0.00—?
Ralph E. EberhartDirFeb 6A5,062$0.00—
Ralph E. EberhartDirFeb 6M11,564——
Barbara LoughranDirFeb 6A5,062$0.00—
Christopher M.T. ThompsonDirFeb 6A5,062$0.00—
John C. VollmerDirDERIVFeb 6M11,564$0.00—?
John C. VollmerDirFeb 6A5,062$0.00—
John C. VollmerDirFeb 6M11,564——
John E. HellerCEODERIVJan 28M51,979$0.00—?
John E. HellerCEOJan 28F19,768$35.71$706K
John E. HellerCEOJan 28M51,979——
Sean Thomas MullenChiefDERIVDec 17M9,298$0.00—?
Sean Thomas MullenChiefDec 17F4,194$28.67$120K
Sean Thomas MullenChiefDec 17M9,298——
Darren BurtonChiefDERIVDec 5M2,721$0.00—?
Darren BurtonChiefDec 5F1,392$28.88$40K
Darren BurtonChiefDec 5M2,721——
Sean Thomas MullenChiefNov 17A17,817$0.00—
John E. HellerCEONov 17A155,897$0.00—
Jill L. BruningCTONov 17A17,817$0.00—
Darren BurtonChiefNov 17A22,271$0.00—
Travis Barton JohnsonCFONov 17A100,220$0.00—
Mary Michele T. St.GCNov 17A22,271$0.00—
Stephen A. ArnetteCOODERIVNov 17M1,178$0.00—?
Stephen A. ArnetteCOONov 17A46,769$0.00—
Stephen A. ArnetteCOONov 17F287$21.49$6K
Stephen A. ArnetteCOONov 17M1,178——
Steven J. DemetriouChairDERIVNov 17M43,396$0.00—?
Steven J. DemetriouChairNov 17A111,355$0.00—
Steven J. DemetriouChairNov 17F17,077$21.49$367K
Steven J. DemetriouChairNov 17M43,396——
Stephen A. ArnetteCOODERIVNov 16M4,596$0.00—?
Stephen A. ArnetteCOODERIVNov 16M3,681$0.00—?
Stephen A. ArnetteCOODERIVNov 16M5,053$0.00—?
Stephen A. ArnetteCOODERIVNov 15M5,758$0.00—?
Stephen A. ArnetteCOONov 16F1,120$22.07$25K
Stephen A. ArnetteCOONov 16M4,596——
Stephen A. ArnetteCOONov 16F897$22.07$20K
Stephen A. ArnetteCOONov 16M3,681——
Stephen A. ArnetteCOONov 16F1,231$22.07$27K
Stephen A. ArnetteCOONov 16M5,053——
Stephen A. ArnetteCOONov 15F1,403$22.07$31K
Stephen A. ArnetteCOONov 15M5,758——
Travis Barton JohnsonCFODERIVNov 6M12,097$0.00—?
Travis Barton JohnsonCFONov 6F3,642$21.79$79K
Travis Barton JohnsonCFONov 6M12,097——
Jill L. BruningCTODERIVNov 6M4,838$0.00—?
Jill L. BruningCTONov 6F1,457$21.79$32K
Jill L. BruningCTONov 6M4,838——
John E. HellerCEODERIVNov 6M39,617$0.00—?
John E. HellerCEONov 6F17,868$21.79$389K
John E. HellerCEONov 6M39,617——
Sean Thomas MullenChiefDERIVNov 6M4,838$0.00—?
Sean Thomas MullenChiefNov 6F1,621$21.79$35K
Sean Thomas MullenChiefNov 6M4,838——
Steven J. DemetriouChairDERIVNov 6M90,727$0.00—?
Steven J. DemetriouChairNov 6F28,818$21.79$628K
Steven J. DemetriouChairNov 6M90,727——
Stephen A. ArnetteCOODERIVNov 6M12,701$0.00—?
Stephen A. ArnetteCOONov 6F3,093$21.79$67K
Stephen A. ArnetteCOONov 6M12,701——