NYSE:AMTM

Amentum Holdings Stock Insider Trading

*Your capital is at risk

$22.42

-0.440 (-1.92%)

At Close: Jun 15, 2026

Amentum Holdings Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be positive at 92.02. In total, the insiders bought 7.01M and sold 5.02M AMTM shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.

Insider Power (Last 100 transactions)	92.02
● Buy	7.01M shares
● Sell	5.02M shares
75% Buy Activity Weak Positive Correlation
Buy Signal Medium Confidence May 06, 2026 Analysis Breakdown: Strongly supported by a very high Insider Power Score of 92.02. Confidence increased due to high data reliability score of 100.

Historical Insider Trades

Date	Type	Person	Role	Amount
May 06, 2026 Buy	Restricted Stock Units M-Exempt	Arnette Stephen A Chief Operating Officer	C-Suite Officer	13 609 Value: $338.7K
May 06, 2026 Sell	Common Stock F-InKind	Arnette Stephen A Chief Operating Officer	C-Suite Officer	3 314 Value: $82.5K
May 06, 2026 Buy	Common Stock M-Exempt	Arnette Stephen A Chief Operating Officer	C-Suite Officer	13 609 Value: $338.7K
May 06, 2026 Buy	Restricted Stock Units M-Exempt	Bruning Jill L Chief Technology Officer	Officer	9 072 Value: $225.8K
May 06, 2026 Sell	Common Stock F-InKind	Bruning Jill L Chief Technology Officer	Officer	2 731 Value: $68.0K
May 06, 2026 Buy	Common Stock M-Exempt	Bruning Jill L Chief Technology Officer	Officer	9 072 Value: $225.8K
May 06, 2026 Buy	Restricted Stock Units M-Exempt	Johnson Travis Barton Chief Financial Officer	C-Suite Officer	13 609 Value: $338.7K
May 06, 2026 Sell	Common Stock F-InKind	Johnson Travis Barton Chief Financial Officer	C-Suite Officer	4 097 Value: $102.0K
May 06, 2026 Buy	Common Stock M-Exempt	Johnson Travis Barton Chief Financial Officer	C-Suite Officer	13 609 Value: $338.7K
May 06, 2026 Buy	Restricted Stock Units M-Exempt	Mullen Sean Thomas Chief Growth Officer	Officer	9 072 Value: $225.8K
May 06, 2026 Sell	Common Stock F-InKind	Mullen Sean Thomas Chief Growth Officer	Officer	2 762 Value: $68.7K
May 06, 2026 Buy	Common Stock M-Exempt	Mullen Sean Thomas Chief Growth Officer	Officer	9 072 Value: $225.8K
May 06, 2026 Buy	Restricted Stock Units M-Exempt	Heller John E. Chief Executive Officer	CEO / President	18 145 Value: $451.6K
May 06, 2026 Sell	Common Stock F-InKind	Heller John E. Chief Executive Officer	CEO / President	8 184 Value: $203.7K
May 06, 2026 Buy	Common Stock M-Exempt	Heller John E. Chief Executive Officer	CEO / President	18 145 Value: $451.6K
Mar 04, 2026 Sell	Common Stock G-Gift	Bruning Jill L Chief Technology Officer	Officer	30 000 Value: $0
Mar 02, 2026 Buy	Restricted Stock Units M-Exempt	Arnette Stephen A Chief Operating Officer	C-Suite Officer	2 808 Value: $86.2K
Mar 02, 2026 Sell	Common Stock F-InKind	Arnette Stephen A Chief Operating Officer	C-Suite Officer	750 Value: $23.0K
Mar 02, 2026 Buy	Common Stock M-Exempt	Arnette Stephen A Chief Operating Officer	C-Suite Officer	2 808 Value: $86.2K
Feb 17, 2026 Buy	Restricted Stock Units M-Exempt	St. Mary Michele T Chief Legal Officer & GC	Officer	7 080 Value: $212.8K
Feb 17, 2026 Sell	Common Stock F-InKind	St. Mary Michele T Chief Legal Officer & GC	Officer	2 308 Value: $69.4K
Feb 17, 2026 Buy	Common Stock M-Exempt	St. Mary Michele T Chief Legal Officer & GC	Officer	7 080 Value: $212.8K
Feb 06, 2026 Buy	Restricted Stock Units M-Exempt	Vollmer John C. Director	Director	11 564 Value: $434.0K
Feb 06, 2026 Buy	Common Stock M-Exempt	Vollmer John C. Director	Director	11 564 Value: $434.0K
Feb 06, 2026 Buy	Common Stock A-Award	Vollmer John C. Director	Director	5 062 Value: $190.0K

About Insider Power

Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.

It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%^* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.

While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.

* October 6th, 2025 - Tested on 5562 stocks