Insiders · AMTM

AMTM insider transactions

Amentum Holdings Inc. (AMTM) Form 4 insider transactions - real-time wire coverage of every officer, director, and 10% owner trade.

AMTM insiders

Everyone who has filed a Form 3, 4, 5 or 144 at Amentum Holdings Inc., latest first. Follow anyone to get their next filing.

• Stephen A ArnetteChief Operating Officer
• Travis Barton JohnsonChief Financial Officer
• Sean Thomas MullenChief Growth Officer
• Jill L BruningChief Technology Officer
• John E. HellerChief Executive Officer, Director
• Christopher M.T. ThompsonDirector
• Michele T St. MaryChief Legal Officer & GC, since February 2025
• Susan Leslie IrelandDirector
• Sandra E. RowlandDirector
• Vincent K BrooksDirector
• Ralph E EberhartDirector
• Steven J. DemetriouExecutive Chair, Director+$2.08M
• Barbara LoughranDirector+$97.6K
• John C. VollmerDirector
• Darren BurtonChief People Officer, since December 2024
• Goldberg 2014 LLC10% owner, since December 2024
• Lindsay Goldberg Employee Co-Inv. IV L.P.10% owner, since December 2024
• Alan E GoldbergDirector, 10% owner
• Amentum Joint Venture GP LLCDirector
• Jacobs Solutions Inc.10% owner, since September 2024
• ASP Amentum Investco LP10% owner, since December 2024
• ASP Manager Corp.10% owner, since December 2024
• Stuart Ira YoungChief Legal Officer

Recent Form 3, 4, and 5 filings for AMTM

• 8h
  Chief Operating Officer Arnette Stephen A converted options into 12,702 shares and covered exercise/tax liability with 4,999 shares, increasing direct ownership by 7% to 114,355 units (SEC Form 4) to cover taxes

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 8h
  Chief Financial Officer Johnson Travis Barton converted options into 12,097 shares and covered exercise/tax liability with 5,064 shares, increasing direct ownership by 6% to 125,220 units (SEC Form 4) (withholding tax)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 8h
  Chief Growth Officer Mullen Sean Thomas converted options into 4,839 shares and covered exercise/tax liability with 2,183 shares, increasing direct ownership by 8% to 35,104 units (SEC Form 4) to satisfy withholding tax

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 8h
  Chief Technology Officer Bruning Jill L converted options into 4,839 shares and covered exercise/tax liability with 1,457 shares, increasing direct ownership by 2% to 201,765 units (SEC Form 4) to cover withholding tax

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 8h
  Chief Executive Officer Heller John E. converted options into 39,618 shares and covered exercise/tax liability with 17,868 shares, increasing direct ownership by 6% to 397,769 units (SEC Form 4) to satisfy tax liability

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 54d
  Director Thompson Christopher M.T. gifted 4,250 shares (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 187d
  Chief Executive Officer Heller John E. converted options into 18,145 shares and covered exercise/tax liability with 8,184 shares, increasing direct ownership by 3% to 376,019 units (SEC Form 4) (tax withholding)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 187d
  Chief Growth Officer Mullen Sean Thomas converted options into 9,072 shares and covered exercise/tax liability with 2,762 shares, increasing direct ownership by 24% to 32,448 units (SEC Form 4) to satisfy withholding obligation

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 187d
  Chief Financial Officer Johnson Travis Barton covered exercise/tax liability with 4,097 shares and converted options into 13,609 shares, increasing direct ownership by 9% to 118,187 units (SEC Form 4) (for withholding tax)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 187d
  Chief Technology Officer Bruning Jill L converted options into 9,072 shares and covered exercise/tax liability with 2,731 shares, increasing direct ownership by 3% to 197,457 units (SEC Form 4) (tax liability)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 187d
  Chief Operating Officer Arnette Stephen A converted options into 13,609 shares and covered exercise/tax liability with 3,314 shares, increasing direct ownership by 11% to 106,652 units (SEC Form 4) (tax liability)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 250d
  Chief Technology Officer Bruning Jill L gifted 30,000 shares, decreasing direct ownership by 14% to 190,999 units (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 251d
  Chief Operating Officer Arnette Stephen A converted options into 2,808 shares and covered exercise/tax liability with 750 shares, increasing direct ownership by 2% to 96,357 units (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 265d
  Chief Legal Officer & GC St. Mary Michele T converted options into 7,080 shares and covered exercise/tax liability with 2,308 shares, increasing direct ownership by 21% to 27,043 units (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 273d
  Director Ireland Susan Leslie was granted 5,062 shares, increasing direct ownership by 147% to 8,509 units (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 273d
  Director Rowland Sandra E. was granted 5,062 shares and converted options into 11,564 shares, increasing direct ownership by 482% to 20,073 units (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 273d
  Director Eberhart Ralph E was granted 5,062 shares and converted options into 11,564 shares, increasing direct ownership by 53% to 48,120 units (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 273d
  Director Brooks Vincent K converted options into 11,564 shares and was granted 5,062 shares, increasing direct ownership by 153% to 27,462 units (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 273d
  Amendment: SEC Form 4 filed by Executive Chair Demetriou Steven J.

  4/A - Amentum Holdings, Inc. (0002011286) (Issuer)
• 273d
  Director Loughran Barbara was granted 5,062 shares, increasing direct ownership by 110% to 9,662 units (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 273d
  Director Vollmer John C. converted options into 11,564 shares and was granted 5,062 shares, increasing direct ownership by 4% to 429,842 units (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 273d
  Director Thompson Christopher M.T. was granted 5,062 shares (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 285d
  Chief Executive Officer Heller John E. converted options into 51,979 shares and covered exercise/tax liability with 19,768 shares, increasing direct ownership by 10% to 366,058 units (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 326d
  Amendment: SEC Form 4 filed by Chief Executive Officer Heller John E.

  4/A - Amentum Holdings, Inc. (0002011286) (Issuer)
• 326d
  Amendment: SEC Form 4 filed by Chief Technology Officer Bruning Jill L

  4/A - Amentum Holdings, Inc. (0002011286) (Issuer)
• 326d
  Amendment: SEC Form 4 filed by Chief Operating Officer Arnette Stephen A

  4/A - Amentum Holdings, Inc. (0002011286) (Issuer)
• 326d
  Chief Growth Officer Mullen Sean Thomas converted options into 9,298 shares and covered exercise/tax liability with 4,194 shares, increasing direct ownership by 24% to 26,138 units (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 336d
  Chief People Officer Burton Darren converted options into 2,721 shares and covered exercise/tax liability with 1,392 shares, increasing direct ownership by 6% to 23,600 units (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 356d
  Chief Growth Officer Mullen Sean Thomas was granted 17,817 shares, increasing direct ownership by 554% to 21,034 units (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 356d
  Chief Executive Officer Heller John E. was granted 155,897 shares, increasing direct ownership by 137% to 269,440 units (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 356d
  Chief Technology Officer Bruning Jill L was granted 17,817 shares, increasing direct ownership by 527% to 21,198 units (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 356d
  Chief People Officer Burton Darren was granted 22,271 shares (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 356d
  Chief Financial Officer Johnson Travis Barton was granted 100,220 shares, increasing direct ownership by 1,185% to 108,675 units (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 356d
  Chief Legal Officer & GC St. Mary Michele T was granted 22,271 shares (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 356d
  Chief Operating Officer Arnette Stephen A converted options into 1,178 shares, covered exercise/tax liability with 287 shares and was granted 46,769 shares, increasing direct ownership by 103% to 93,725 units (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 356d
  Executive Chair Demetriou Steven J. converted options into 43,396 shares, covered exercise/tax liability with 17,077 shares and was granted 111,355 shares, increasing direct ownership by 20% to 820,476 units (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 357d
  Chief Operating Officer Arnette Stephen A converted options into 19,088 shares and covered exercise/tax liability with 4,651 shares, increasing direct ownership by 46% to 46,065 units (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 365d
  Chief Financial Officer Johnson Travis Barton converted options into 12,097 shares and covered exercise/tax liability with 3,642 shares (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 365d
  Chief Technology Officer Bruning Jill L converted options into 4,838 shares and covered exercise/tax liability with 1,457 shares (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 365d
  Chief Executive Officer Heller John E. converted options into 39,617 shares and covered exercise/tax liability with 17,868 shares, increasing direct ownership by 24% to 113,543 units (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 365d
  Chief Growth Officer Mullen Sean Thomas converted options into 4,838 shares and covered exercise/tax liability with 1,621 shares (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 365d
  Executive Chair Demetriou Steven J. converted options into 90,727 shares and covered exercise/tax liability with 28,818 shares, increasing direct ownership by 10% to 682,802 units (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 365d
  Chief Operating Officer Arnette Stephen A converted options into 12,701 shares and covered exercise/tax liability with 3,093 shares, increasing direct ownership by 44% to 31,628 units (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 547d
  Large owner Lindsay Goldberg Employee Co-Inv. Iv L.P. acquired 1,132,839 shares (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 547d
  Large owner Goldberg 2014 Llc acquired 1,132,839 shares (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 547d
  Director Goldberg Alan E acquired 1,132,839 shares (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 547d
  Director Amentum Joint Venture Gp Llc disposed of 2,433,022 shares (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 579d
  SEC Form 4 filed by Director Vollmer John C.

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 579d
  SEC Form 4 filed by Director Brooks Vincent K

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 579d
  SEC Form 4 filed by Director Eberhart Ralph E

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 579d
  SEC Form 4 filed by Director Loughran Barbara

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 579d
  SEC Form 4 filed by Director Ireland Susan Leslie

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 579d
  SEC Form 4 filed by Director Rowland Sandra E.

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 579d
  SEC Form 4 filed by Director Thompson Christopher M.T.

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 581d
  Director Amentum Joint Venture Gp Llc was granted 2,433,022 shares (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 601d
  SEC Form 4 filed by Chief Legal Officer & GC St. Mary Michele T

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 603d
  Large owner Jacobs Solutions Inc. disposed of 19,464,174 shares (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 613d
  Director Ireland Susan Leslie converted options into 3,447 shares (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 613d
  Director Vollmer John C. acquired 391,341 shares and converted options into 3,447 shares (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)
• 613d
  Director Brooks Vincent K acquired 6,966 shares and converted options into 3,447 shares (SEC Form 4)

  4 - Amentum Holdings, Inc. (0002011286) (Issuer)