MULLEN SEAN THOMAS

PrivateCIK: 2034388
Location

CHANTILLY, VA

MULLEN SEAN THOMAS (Chief Growth Officer) exercised options at AMENTUM HOLDINGS, INC.

Option exercise — a mechanical event triggered by vesting or expiry. Not a discretionary conviction trade.

M · 1 exercise
InsiderMULLEN SEAN THOMASCIK 2034388
IssuerAMENTUM HOLDINGS, INC.CIK 2011286
Officer· Chief Growth Officer
Since Sep 2024
-4.19K
Net shares
Net seller
$120.2K
Total sold
0
Open market trades
0B · 0S
3
Total transactions
9.30K acquired · 13.49K disposed
Non-Derivative Transactions2

Common Stock

Direct
M · Option Exercise

Shares

+9.30K

Price / share

Trade value

% of position

44.2%
12/17/2025
21.03K30.33K

Common Stock

Direct
F · Tax Withholding

Shares

4.19K

Price / share

$28.67

Trade value

$120.24K

% of position

13.8%
12/17/2025
30.33K26.14K
Total

Net shares

+5.10K

Net value

-$120.24K

Derivative Transactions1

Restricted Stock Units

Direct
M · Option Exercise
Converts to

Common Stock

9.30K shares

Shares

9.30K

Strike price

Held after

0.00

Exercisable

12/17/2025
MULLEN SEAN THOMAS — Insider Transaction (Form 4) Filed Dec 19, 2025 | Finecho