Thomas McMillen - Aug 20, 2025 Form 4 Insider Report for Castellum, Inc. (CTM)

Role
Director
Signature
/s/ C. Thomas McMillen
Stock symbol
CTM
Transactions as of
Aug 20, 2025
Transactions value $
$0
Form type
4
Date filed
8/21/2025, 04:11 PM
Previous filing
Mar 24, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
McMillen Charles Thomas Director 1103 SOUTH CAROLINA AVENUE, WASHINGTON /s/ C. Thomas McMillen 2025-08-21 0001332108

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction CTM Common Stock Options Exercise $26.5K +125K +65.44% $0.21 316K Aug 21, 2025 Direct F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction CTM Stock Options Options Exercise -$26.5K -125K -100% $0.21 0 Aug 20, 2025 Common Stock 125K $0.21 Direct F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Reflects the issuance of common stock in connection with the cash exercise of stock options.
F2 These stock options are fully vested and exercised.