Castellum Ownership & Insider Activity

Castellum (CTM) institutional and insider ownership, recent insider transactions and ownership breakdown.

Insiders own 17.6% of shares outstanding. Institutional investors hold 7.1%. Over the past 90 days, insiders made 5 purchases worth $34K.

Shares Outstanding

94.781M

Shares Float

86.222M

Insider Shares Owned

16.674M

Insider % Owned

17.6%

Institutional Shares Held

6.736M

Institutional % Held

7.1%

Ownership Breakdown

Net Insider Activity by Month

Purchases (90d)

$34K total

Sales (90d)

Net Activity

Net Buying

Net Value (90d)

$34K

Castellum Insider Transactions (Last 6 Months)

Date	Insider	Title	Type	Shares	Price	Value
Sep 9, 2026	Andrew Merriman	CHIEF OPERATING OFFICER	BUY	50.000K	$0.62	$31K
Jul 1, 2026	Andrew Merriman	CHIEF OPERATING OFFICER	BUY	1.202K	$0.61	$736
Jul 1, 2026	David T Bell	CHIEF FINANCIAL OFFICER	BUY	1.202K	$0.61	$736
Jul 1, 2026	Tammy L Martin	GENERAL COUNSEL AND SECRETARY	BUY	1.202K	$0.61	$736
Jul 1, 2026	Glen R Ives	PRESIDENT	BUY	1.262K	$0.61	$772