AH

Amentum Holdings, Inc.

AMTM·NYSE

$23.16

+0.89%
IndustrialsAerospace & Defense

Amentum Holdings, Inc. provides mission-critical, technology-driven services in government and commercial markets. It operates through two operating segments: Critical Mission Solutions and Cyber & Intelligence. The Critical Mission Solutions segment provides test, training, and operations services for missile defense systems, IT and engineering services to defense clients and the space sector, technological solutions, including installations, decommissioning, and environmental remediation to energy clients, and other highly technical consulting solutions. The Cyber & Intelligence segment provides advanced cyber training and data analytics for government professionals, advanced communication systems and aerial mapping technologies to national security clients, and other technical services for United States defense and intelligence clients. The company was founded on November 26, 2019 and is headquartered in Chantilly, VA.

At a Glance

Live Snapshot
Market Cap$5.65B
EPS0.2700
P/E Ratio85.78
Earnings Date08/04/2026
2.67%
Return on Invested Capital
85%
3Y+155.0%
5Y-
10Y-
1.47%
Return on Equity
-180%
3Y-102.0%
5Y-
10Y-
0.58%
Return on Assets
-184%
3Y-112.0%
5Y-
10Y-
AH

Amentum Holdings, Inc. Management Team

AMTM · NYSE
MT

Mr. Travis Barton Johnson

Chief Accounting Officer & Chief Financial Officer

Compensation

$1,963,649

Born 1986(Age 40)
male
MK

Ms. Karina Vollmer

Chief Ethics & Compliance Officer

female
MJ

Mr. John E. Heller

Chief Executive Officer & Director

Compensation

$2,782,479

Born 1962(Age 64)
male
MS

Mr. Sean Mullen

Chief Growth Officer

Compensation

$1,233,964

male
ML

Mr. Luis German

Chief Information Officer

male
MM

Ms. Michele St. Mary

Chief Legal Officer & General Counsel

female
MS

Mr. Stephen A Arnette

Chief Operating Officer

Compensation

$1,158,959

Born 1968(Age 58)
male
MJ

Ms. Jill Bruning

Chief Technology Officer

female
MS

Mr. Steven J. Demetriou

Executive Chair

Compensation

$2,601,384

Born 1958(Age 68)
male
MN

Mr. Nathan Rutledge

Senior Vice President & Head of Investor Relations

male
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Amentum Holdings, Inc. Insider Positioning

AMTM · NYSE

During the last 12 months, there has been no insider trading activity reported for AMTM.

3 Months

Bought

0

0.00

Sold

0

0.00

Net Activity

+0

+$0

3-6 Months

Bought

0

0.00

Sold

0

0.00

Net Activity

+0

+$0

6-9 Months

Bought

0

0.00

Sold

0

0.00

Net Activity

+0

+$0

9-12 Months

Bought

0

0.00

Sold

0

0.00

Net Activity

+0

+$0

Top Buyers

No buying activity

Top Sellers

No selling activity

Insider Activity Analysis

Net Insider Sentiment

Neutral

No insider trading activity reported. This could indicate blackout periods, lack of conviction, or regulatory restrictions.

Insider Participation

No Activity

No insider trading activity reported from any insiders in the past year.

SEC Filings

AMTM - Filing history and reports

Filing TypeFiling DatePeriod EndingFiscal YearActions
DEF 14A

DEF 14A 2026

N/A

December 19, 2025
February 06, 2026
2026
DEF 14A

DEF 14A 2025

N/A

January 21, 2025
March 05, 2025
2025
Showing 1 to 2 of 2 filings