Andrew Merriman - 11 Nov 2025 Form 4 Insider Report for Castellum, Inc. (CTM)

Role: Chief Operating Officer
Signature: /s/ Andrew Merriman
Issuer symbol: CTM
Transactions as of: 11 Nov 2025
Net transactions value: $0
Form type: 4
Filing time: 13 Nov 2025, 06:52:35 UTC
Previous filing: 24 Jan 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Merriman Andrew	Chief Operating Officer	1934 OLD GALLOWS ROAD, SUITE 350, VIENNA	/s/ Andrew Merriman	13 Nov 2025	0002036177

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	Award	$0	+275,000		$0.000000	275,000	11 Nov 2025	Common Stock	275,000	$1.19	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	In connection with his continued employment, on November 11, 2025 Mr. Merriman received 275,000 stock options issued pursuant to the Castellum, Inc. Second Amended 2021 Stock Incentive Plan to purchase 275,000 shares of common stock, which vest ratably over twenty months, commencing December 1, 2025.