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Public disclosures only. Scores flag unusual patterns and are not evidence of wrongdoing. Not investment advice.

RH CHAIN…
OverviewFollow the MoneyDaily BriefLiveCongressCorporate InsidersGovernment MoneyPolitical InfluenceInstitutionsWashington NetworkFollow the PowerDisclosure ClockAI InvestigatorWatchlistConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodologyMatch reviewLaunch readiness
01Overview02Follow the Money03Daily Brief04Live05Congress06Corporate Insiders07Government Money08Political Influence09Institutions10Washington Network11Follow the Power12Disclosure Clock13AI Investigator14Watchlist
ConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodologyMatch reviewLaunch readiness
OverviewFollow the MoneyDaily BriefLiveCongressCorporate InsidersGovernment MoneyPolitical InfluenceInstitutionsWashington NetworkFollow the PowerDisclosure ClockAI InvestigatorWatchlistConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodologyMatch reviewLaunch readiness
Data sources
SEC FORM 42h ago
HOUSE PTR2h ago
SEC 13F2h ago
ROBINHOOD CHAIN2h ago
Public company

AMTMAmentum Holdings, Inc.

CIK 0002011286

EDGAR filingsOpen in network
Disclosed transactions15
Buys / sells0 / 0
Max Insider Score21
Connections13with evidence

AMTM · disclosed activity on price

Disclosed transactions

ScoreActorSecuritySideValueExecutedDisclosedLagSourceEvidence
12
HE
Heller John E.Director, Chief Executive Officer
AMTMAmentum Holdings, Inc.
Tax withholding
F$204K
8,184 sh
May 6, 2026May 7, 2026
traded May 6, 2026
+1dSEC FORM 4

Evidence

Verified connections

  • ← Connected organizationevidence
    AMENTUM HOLDINGS, INC. PAC (AMENTUM PAC)FEC Form 1 connected organization: AMENTUM HOLDINGS, INC. (exact legal-name match) · Nov 4, 2026
  • ← Subsidiary or recipient ofevidence
    UNITED CLEANUP OAK RIDGE LLCExact legal-name match (SEC registrant) · Oct 29, 2026
  • ← Subsidiary or recipient ofevidence
    AMENTUM SERVICES, INC.Exact legal-name match (SEC registrant) · Oct 28, 2026
  • ← Subsidiary or recipient ofevidence
    AMENTUM TECHNOLOGY, INC.
16
MT
Mullen Sean ThomasChief Growth Officer
AMTMAmentum Holdings, Inc.
Tax withholding
F
$69K
2,762 sh
May 6, 2026
May 7, 2026
traded May 6, 2026
+1d
SEC FORM 4

Evidence

21
MT
Mullen Sean ThomasChief Growth Officer
AMTMAmentum Holdings, Inc.
Option exercise
M—
9,072 sh
May 6, 2026May 7, 2026
traded May 6, 2026
+1dSEC FORM 4

Evidence

12
JB
Johnson Travis BartonChief Financial Officer
AMTMAmentum Holdings, Inc.
Tax withholding
F$102K
4,097 sh
May 6, 2026May 7, 2026
traded May 6, 2026
+1dSEC FORM 4

Evidence

9
JB
Johnson Travis BartonChief Financial Officer
AMTMAmentum Holdings, Inc.
Option exercise
M—
13.6K sh
May 6, 2026May 7, 2026
traded May 6, 2026
+1dSEC FORM 4

Evidence

12
BL
Bruning Jill LChief Technology Officer
AMTMAmentum Holdings, Inc.
Tax withholding
F$68K
2,731 sh
May 6, 2026May 7, 2026
traded May 6, 2026
+1dSEC FORM 4

Evidence

21
BL
Bruning Jill LChief Technology Officer
AMTMAmentum Holdings, Inc.
Option exercise
M—
9,072 sh
May 6, 2026May 7, 2026
traded May 6, 2026
+1dSEC FORM 4

Evidence

13
AA
Arnette Stephen AChief Operating Officer
AMTMAmentum Holdings, Inc.
Option exercise
M—
13.6K sh
May 6, 2026May 7, 2026
traded May 6, 2026
+1dSEC FORM 4

Evidence

12
AA
Arnette Stephen AChief Operating Officer
AMTMAmentum Holdings, Inc.
Tax withholding
F$82K
3,314 sh
May 6, 2026May 7, 2026
traded May 6, 2026
+1dSEC FORM 4

Evidence

9
AA
Arnette Stephen AChief Operating Officer
AMTMAmentum Holdings, Inc.
Option exercise
M—
13.6K sh
May 6, 2026May 7, 2026
traded May 6, 2026
+1dSEC FORM 4

Evidence

9
BL
Bruning Jill LChief Technology Officer
AMTMAmentum Holdings, Inc.
Option exercise
M—
9,072 sh
May 6, 2026May 7, 2026
traded May 6, 2026
+1dSEC FORM 4

Evidence

21
HE
Heller John E.Director, Chief Executive Officer
AMTMAmentum Holdings, Inc.
Option exercise
M—
18.1K sh
May 6, 2026May 7, 2026
traded May 6, 2026
+1dSEC FORM 4

Evidence

9
HE
Heller John E.Director, Chief Executive Officer
AMTMAmentum Holdings, Inc.
Option exercise
M—
18.1K sh
May 6, 2026May 7, 2026
traded May 6, 2026
+1dSEC FORM 4

Evidence

13
JB
Johnson Travis BartonChief Financial Officer
AMTMAmentum Holdings, Inc.
Option exercise
M—
13.6K sh
May 6, 2026May 7, 2026
traded May 6, 2026
+1dSEC FORM 4

Evidence

17
MT
Mullen Sean ThomasChief Growth Officer
AMTMAmentum Holdings, Inc.
Option exercise
M—
9,072 sh
May 6, 2026May 7, 2026
traded May 6, 2026
+1dSEC FORM 4

Evidence

Exact legal-name match (SEC registrant) · Oct 19, 2026
  • ← Subsidiary or recipient ofevidence
    CENTRAL PLATEAU CLEANUP COMPANY, LLCExact legal-name match (SEC registrant) · Oct 18, 2026
  • ← Lobbied forevidence
    PRASAMLDA Q2 2026 second quarter · Defense · Aug 26, 2026
  • ← Lobbied forevidence
    MONUMENT ADVOCACYLDA Q2 2026 second quarter · Budget/appropriations, Defense · Aug 26, 2026
  • ← Lobbied forevidence
    HARBORPOINT STRATEGIES LLCLDA Q1 2026 first quarter · Defense · Aug 26, 2026
  • ← Insider ofevidence
    Arnette Stephen AChief Operating Officer · May 7, 2026
  • ← Insider ofevidence
    Bruning Jill LChief Technology Officer · May 7, 2026
  • ← Insider ofevidence
    Mullen Sean ThomasChief Growth Officer · May 7, 2026
  • ← Insider ofevidence
    Heller John E.Director, Chief Executive Officer · May 7, 2026
  • ← Insider ofevidence
    Johnson Travis BartonChief Financial Officer · May 7, 2026
  • Federal awards

    5 tracked · $4.49B obligated
    RecipientAgencySignedObligatedCeilingOutlays
    AMENTUM TECHNOLOGY, INC.Parent: AMENTUM HOLDINGS INC.National Aeronautics and Space AdministrationNational Aeronautics and Space AdministrationSep 18, 2026$36.90M$36.90M—Source
    AMENTUM SERVICES, INC.Parent: AMENTUM HOLDINGS INC.Department of StateDepartment of StateSep 17, 2026$18.20M$18.20M—Source
    AMENTUM SERVICES, INC.Parent: AMENTUM HOLDINGS INC.Department of Homeland SecurityU.S. Immigration and Customs EnforcementMar 12, 2026$657.56M$657.56M$160.62MSource
    CENTRAL PLATEAU CLEANUP COMPANY, LLCParent: AMENTUM HOLDINGS INC.Department of EnergyDepartment of EnergySep 16, 2024$1.12B$1.62B$845.82MSource
    UNITED CLEANUP OAK RIDGE LLCParent: AMENTUM HOLDINGS INC.Department of EnergyDepartment of EnergyMay 17, 2023$2.66B$3.45B$2.21BSource

    Lobbying

    $180K reported · de-duplicated
    2026 Q2 $90K in-house2026 Q1 $90K in-house
    • MONUMENT ADVOCACY$30K2026 Q1 · posted Aug 26, 2026 · Budget/appropriations, Defense
    • PRASAM$10K2026 Q2 · posted Aug 26, 2026 · Defense
    • PRASAM—2026 Q1 · posted Aug 26, 2026 · Defense
    • In-house report$90K2026 Q1 · posted Aug 26, 2026 · Aerospace, Budget/appropriations, Defense, Environment, Homeland security
    • MONUMENT ADVOCACY$30K2026 Q2 · posted Aug 26, 2026 · Budget/appropriations, Defense
    • In-house report$90K2026 Q2 · posted Aug 26, 2026 · Aerospace, Budget/appropriations, Defense, Environment, FOR, Homeland security
    • HARBORPOINT STRATEGIES LLC$30K2026 Q2 · posted Aug 26, 2026 · Budget/appropriations, Defense
    • HARBORPOINT STRATEGIES LLC$10K2026 Q1 · posted Aug 26, 2026 · Defense

    Connected PAC contributions

    FEC · direct to members
    • Scott DesJarlaisR$10KAMENTUM HOLDINGS, INC. PAC (AMENTUM PAC)
    • Adam SmithD$10KAMENTUM HOLDINGS, INC. PAC (AMENTUM PAC)
    • Robert J. WittmanR$9,000AMENTUM HOLDINGS, INC. PAC (AMENTUM PAC)
    • Jeff CrankR$8,000AMENTUM HOLDINGS, INC. PAC (AMENTUM PAC)
    • James R. WalkinshawD$8,000AMENTUM HOLDINGS, INC. PAC (AMENTUM PAC)
    Charles J. "Chuck" FleischmannR
    $7,500
    AMENTUM HOLDINGS, INC. PAC (AMENTUM PAC)
  • Mario Diaz-BalartR$7,000AMENTUM HOLDINGS, INC. PAC (AMENTUM PAC)
  • Ken CalvertR$6,500AMENTUM HOLDINGS, INC. PAC (AMENTUM PAC)
  • Mike HaridopolosR$5,000AMENTUM HOLDINGS, INC. PAC (AMENTUM PAC)
  • Dale W. StrongR$5,000AMENTUM HOLDINGS, INC. PAC (AMENTUM PAC)
  • Bill HagertyR$4,500AMENTUM HOLDINGS, INC. PAC (AMENTUM PAC)
  • Tom ColeR$4,500AMENTUM HOLDINGS, INC. PAC (AMENTUM PAC)