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© 2026 DataHeimdall. All rights reserved.Data sourced from SEC EDGAR public filings.
Insider Trades

AMTM

Amentum Holdings, Inc.

Superinvestors

Institutional investors holding AMTM

Consensus →
InvestorFundWeightSharesValueQuarter
Kopernik Global InvestorsKopernik Global Investors1.65%636,226$15.0M2025Q2
Lee AinslieMaverick Capital0.01%46,335$1.2M2026Q1

Congressional Activity

Congressional data coming soon

Insider Activity

10

Total trades

$525K

Volume

0

Buys

5

Sells

Last trade: May 6, 2026

Insider Tradeslast 90 days

DateInsiderTypeValue
May 6, 2026John E. HellerOption–
May 6, 2026John E. HellerSell$82K

Congressional Tradeslast 90 days

Congressional trade data is being sourced and will appear here shortly.

May 6, 2026
John E. Heller
Option
–
May 6, 2026John E. HellerSell$68K
May 6, 2026John E. HellerOption–
May 6, 2026John E. HellerSell$102K
May 6, 2026John E. HellerOption–
May 6, 2026John E. HellerSell$69K
May 6, 2026John E. HellerOption–
May 6, 2026John E. HellerSell$204K