Mark C Fuller Castellum, Inc. (CTM) insider trading activity

Mark C Fuller is of Castellum, Inc.. Currently has a direct ownership of 6.11 Million shares of CTM, which is worth approximately $5.99 Million. The most recent transaction as insider was on Sep 03, 2025, when has been sold 500,000 shares (Common Stock) at a price of $1.12 per share, resulting in proceeds of $560,000. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 6.11M

7.56% 3M change

20.23% 12M change

Total Value Held $5.99 Million

Mark C Fuller Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Sep 03 2025	SELL Open market or private sale	$560,000 $1.12 p/Share	500,000 Reduced 7.56%	6,113,659 Common Stock
May 19 2025	SELL Open market or private sale	$525,000 $1.05 p/Share	500,000 Reduced 7.03%	6,613,659 Common Stock
Mar 06 2025	SELL Open market or private sale	$299,250 $1.33 p/Share	225,000 Reduced 3.07%	7,113,659 Common Stock
Mar 05 2025	SELL Open market or private sale	$409,750 $1.49 p/Share	275,000 Reduced 3.61%	7,338,659 Common Stock
Mar 05 2025	SELL Other acquisition or disposition	-	50,000 Reduced 0.65%	7,613,659 Common Stock
Jun 13 2023	BUY Open market or private purchase	$650 $0.65 p/Share	1,000 Added 0.01%	7,663,659 Common Stock
Dec 02 2022	BUY Open market or private purchase	$1,612,324 $1246.0 p/Share	1,294 Added 0.02%	7,662,659 Common Stock
Nov 30 2022	BUY Open market or private sale	$76,514,248 $8017.0 p/Share	9,544 Added 0.12%	7,661,365 Common Stock
Nov 28 2022	BUY Open market or private sale	$12,303,720 $2860.0 p/Share	4,302 Added 0.06%	7,651,821 Common Stock

MCF

Mark C Fuller

Bethesda, MD

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