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

Role
Director
Signature
/s/ C. Thomas McMillen
Issuer symbol
CTM
Transactions as of
20 Aug 2025
Net transactions value
$0
Form type
4
Filing time
21 Aug 2025, 16:11:59 UTC
Previous filing
24 Mar 2025
Next filing
13 Nov 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 21 Aug 2025 0001332108

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction CTM Common Stock Options Exercise $26,500 +125,000 +65% $0.2120 316,015 21 Aug 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 $26,500 -125,000 -100% $0.2120 0 20 Aug 2025 Common Stock 125,000 $0.2120 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.