Amentum Holdings ($AMTM) Insider Trading & Smart Money Activity

Amentum Holdings, Inc. · Specialty Business Services · Latest filing May 15, 2026

Amentum Holdings, Inc. ($AMTM) has 4 13F position changes on file.

Insider buyers (12 mo): 0
Insider sellers (12 mo): 0
Net insider $ (12 mo): $0
Congress trades (12 mo): 0
13F moves on file: 4
Analyst ratings on file: 0

AMTM insider buying and selling by quarter

Quarter	Congress buys / sales	13F added / cut
Q1 2026	0 / 0	0 / 0
Q2 2026	0 / 0	2 / 2
Q3 2026	0 / 0	0 / 0
Q4 2026	0 / 0	0 / 0

Insider buys and sales count open-market trades only (Form 4 codes P and S). Grants, option exercises and tax withholding are left out.

All AMTM insider, congress, 13F and analyst activity

Date	Source	Who	Action	Shares	Value / amount	1W	1M	Story
May 15, 2026	13F	Verition Fund Management	Added	+432.77K sh	$26.75M	+1.1%	-2.4%	Read
May 15, 2026	13F	Mirae Asset Global Etfs Holdings	Added	+823.21K sh	$57.40M	+1.1%	-2.4%	—
May 15, 2026	13F	Focus Partners Wealth	Reduced	-189.51K sh	$53.69M	+1.1%	-2.4%	—
May 12, 2026	13F	Invesco	Reduced	-360.23K sh	$499.16M	-6.9%	-9.2%	Read

1W / 1M / 6M = how AMTM moved from the trade or filing date.

Institutions moving AMTM (13F)

Frequently asked questions

Which institutions changed their AMTM positions?

Recent 13F filers moving the stock include Verition Fund Management, Mirae Asset Global Etfs Holdings, Focus Partners Wealth and Invesco.

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Data comes from public SEC Form 4 and 13F filings and STOCK Act disclosures. Dates are the trade or filing date reported. This page is for research only and is not investment advice.

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