WallStreetZenWallStreetZen

NYSE: AMTM
Amentum Holdings Inc Stock Ownership - Who owns Amentum Holdings?

OverviewForecastEarningsRevenueDividendOwnership

Insider buying vs selling

Have Amentum Holdings Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Stephen A. ArnetteChief Operating Officer2026-05-063,314$24.89
$82.49kSell
Travis Barton JohnsonChief Financial Officer2026-05-064,097$24.89
$101.97kSell
Jill L. BruningChief Technology Officer2026-05-062,731$24.89
$67.97kSell
John E. HellerChief Executive Officer2026-05-068,184$24.89
$203.70kSell
Sean Thomas MullenChief Growth Officer2026-05-062,762$24.89
$68.75kSell
Stephen A. ArnetteChief Operating Officer2026-03-02750$30.70
$23.03kSell
Mary Michele T. StChief Legal Officer GC2026-02-172,308$30.05
$69.36kSell
John E. HellerChief Executive Officer2026-01-2819,768$35.71
$705.92kSell
Sean Thomas MullenChief Growth Officer2025-12-174,194$28.67
$120.24kSell
Darren BurtonChief People Officer2025-12-051,392$28.88
$40.20kSell

1 of 3

AMTM insiders have sold more... subscribe to Premium to read more.
Net Insider Buy/Sell (L12M) Ownership

Be the first to know when AMTM insiders and whales buy or sell their stock.

AMTM Shareholders

What type of owners hold Amentum Holdings Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
American Securities LLC18.43%45,026,743$956.37MInstitution
Lindsay Goldberg Employee Coinv IV LP18.43%45,026,743$956.37MInsider
Goldberg 2014 LLC18.43%45,026,743$956.37MInsider
Alan E. Goldberg18.43%45,026,743$956.37MInsider
Asp Manager Corp17.97%43,893,904$932.31MInsider
Asp Amentum Investco LP17.97%43,893,904$932.31MInsider
Invesco Ltd8.79%21,473,778$456.10MInstitution
Blackrock Inc7.30%17,841,283$378.95MInstitution
Primecap Management Co4.95%12,085,294$256.69MInstitution
Legacy Advisors LLC3.71%9,064,278$192.53MInstitution

1 of 3

AMTM vs Specialty Business Service Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
AMTM48.38%51.62%Net SellingNet Selling
UNF34.21%65.79%Net Selling
DLB62.31%2.37%Net SellingNet Selling
AZZ94.26%5.74%Net SellingNet Selling
FA66.54%33.46%Net SellingNet Selling
View Top Specialty Business Service Stocks

Amentum Holdings Stock Ownership FAQ

Who owns Amentum Holdings?

Amentum Holdings (NYSE: AMTM) is owned by 86.38% institutional shareholders, 92.17% Amentum Holdings insiders, and 0.00% retail investors. Lindsay Goldberg Employee Coinv IV LP is the largest individual Amentum Holdings shareholder, owning 45.03M shares representing 18.43% of the company. Lindsay Goldberg Employee Coinv IV LP's Amentum Holdings shares are currently valued at $956.37M.

If you're new to stock investing, here's how to buy Amentum Holdings stock.
©2026 WallStreetZen
Company
AboutNewsBlogStock Investing FAQPlansPrivacy PolicyTerms of ServiceCancellation & RefundsPerformanceHelp GuidesContactTwitterYouTubeNewsletter
Stock Tools
Top Performing AnalystsStock ScreenerStock ForecastTrending StocksStrong Buy StocksHighest Earnings StocksBest Dividend Paying StocksStatisticsStock Market SectorsStock Market IndustriesHow to Buy Stocks Online
Stock Ideas
Buy The DipBiggest Stock Gainers TodayBiggest Stock Losers Today52 Week High Stocks52 Week Low StocksMost Active Stocks TodayMost Undervalued StocksBest Penny Stocks to Buy NowBest Stocks Under $5Best Stocks Under $10
WallStreetZen does not provide financial advice and does not issue recommendations or offers to buy stock or sell any security.

Information is provided 'as-is' and solely for informational purposes and is not advice. WallStreetZen does not bear any responsibility for any losses or damage that may occur as a result of reliance on this data.