Castellum Inc. (CTM) Insider Trading

Cluster buy

4 insiders bought $34k of their own stock in 23 days.

Open-market purchases by executives and directors between Sep 9 and Oct 1. Buying is rarer than selling and says more, but it is one input, not a verdict.

Net open-market

−$721k

13 buys · 8 sales

Under a 10b5-1 plan

of the value sold

Insiders who bought / sold

4 / 2

executives and directors

Last open-market buy

Oct 2026

Oct 1, 2026

Get an email when CTM's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Oct 1	Tammy L Martin General Counsel and Secretary	Bought	1,396	$0.54	$747	9.3%	Form 4
Oct 1	David T Bell Chief Financial Officer	Bought	1,396	$0.54	$747	8.1%	Form 4
Oct 1	Andrew Merriman Chief Operating Officer	Bought	1,396	$0.54	$747	0.2%	Form 4
Oct 1	Glen R Ives President	Bought	1,700	$0.54	$910	0.8%	Form 4
Sep 9	Andrew Merriman Chief Operating Officer	Bought 2 parts	50,000	$0.62 average	$31k	9.3%	Form 4
Jul 1	Andrew Merriman Chief Operating Officer	Bought	1,202	$0.61	$733	0.2%	Form 4
Jul 1	David T Bell Chief Financial Officer	Bought	1,202	$0.61	$733	7.5%	Form 4
Jul 1	Tammy L Martin General Counsel and Secretary	Bought	1,202	$0.61	$733	8.7%	Form 4
Jul 1	Glen R Ives President	Bought	1,262	$0.61	$770	0.6%	Form 4
Mar 27	Andrew Merriman Chief Operating Officer	Bought	2,000	$0.64	$1k	0.4%	Form 4
Mar 27	Glen R Ives President	Bought	2,000	$0.62	$1k	1.0%	Form 4
Mar 26	Glen R Ives President	Bought	10,000	$0.66	$7k	5.3%	Form 4
Mar 25	Charles Thomas McMillen Director	SoldNo plan	30,000	$0.70	$21k	11%	Form 4
Mar 18	Charles Thomas McMillen Director	SoldNo plan	55,000	$0.80	$44k	17%	Form 4
Mar 18	Andrew Merriman Chief Operating Officer	Bought	3,000	$0.80	$2k	0.6%	Form 4
Dec 19, 2025	Jay O Wright General Counsel, Secretary	SoldNo plan	30,000	$1.05	$32k	0.4%	Form 4
Dec 15, 2025 – Dec 16, 2025	Jay O Wright General Counsel, Secretary	SoldNo plan 2 parts	18,000	$1.08 average	$19k	0.3%	Form 4
Dec 10, 2025 – Dec 12, 2025	Jay O Wright General Counsel, Secretary	SoldNo plan 3 parts	188,000	$1.19 average	$224k	2.6%	Form 4
Nov 28, 2025 – Dec 1, 2025	Jay O Wright General Counsel, Secretary	SoldNo plan 2 parts	53,000	$1.05 average	$56k	0.7%	Form 4
Nov 14, 2025 – Nov 17, 2025	Jay O Wright General Counsel, Secretary	SoldNo plan 2 parts	100,000	$1.15 average	$115k	1.3%	Form 4
Nov 11, 2025 – Nov 13, 2025	Jay O Wright General Counsel, Secretary	SoldNo plan 2 parts	220,000	$1.17 average	$258k	2.8%	Form 4
Sep 15, 2025 – Sep 16, 2025	Jay O Wright General Counsel, Secretary	SoldNo plan 2 parts	100,000	$1.11 average	$111k	1.3%	Form 4
Sep 10, 2025 – Sep 12, 2025	Jay O Wright General Counsel, Secretary	SoldNo plan 3 parts	233,000	$1.12 average	$261k	2.9%	Form 4
Sep 5, 2025 – Sep 9, 2025	Jay O Wright General Counsel, Secretary	SoldNo plan 3 parts	446,700	$1.12 average	$498k	5.2%	Form 4
Sep 3, 2025	Mark C Fuller Other	SoldNo plan	500,000	$1.12	$560k	7.6%	Form 4
Aug 27, 2025 – Aug 28, 2025	Jay O Wright General Counsel, Secretary	SoldNo plan 2 parts	64,000	$1.04 average	$67k	0.7%	Form 4
Aug 22, 2025 – Aug 26, 2025	Jay O Wright General Counsel, Secretary	SoldNo plan 2 parts	85,000	$1.04 average	$88k	1.0%	Form 4
Aug 18, 2025 – Aug 19, 2025	Jay O Wright General Counsel, Secretary	SoldNo plan 2 parts	351,000	$1.07 average	$375k	3.9%	Form 4
May 19, 2025	Mark C Fuller Director	SoldNo plan	500,000	$1.05	$525k	7.0%	Form 4
May 19, 2025	Jay O Wright General Counsel, Secretary	SoldNo plan	259,400	$1.07	$278k	2.8%	Form 4
Mar 5, 2025 – Mar 6, 2025	Jay O Wright General Counsel, Secretary	SoldNo plan 2 parts	500,000	$1.43 average	$717k	5.0%	Form 4
Mar 5, 2025 – Mar 6, 2025	Mark C Fuller Director	SoldNo plan 2 parts	500,000	$1.42 average	$709k	6.6%	Form 4

Oct 1
Tammy L Martin
General Counsel and Secretary · bought 1,396 at $0.54
$747
9.3% of stake
Oct 1
David T Bell
Chief Financial Officer · bought 1,396 at $0.54
$747
8.1% of stake
Oct 1
Andrew Merriman
Chief Operating Officer · bought 1,396 at $0.54
$747
0.2% of stake
Oct 1
Glen R Ives
President · bought 1,700 at $0.54
$910
0.8% of stake
Sep 9
Andrew Merriman
Chief Operating Officer · bought 50,000 at avg $0.62
$31k
9.3% of stake
Jul 1
Andrew Merriman
Chief Operating Officer · bought 1,202 at $0.61
$733
0.2% of stake
Jul 1
David T Bell
Chief Financial Officer · bought 1,202 at $0.61
$733
7.5% of stake
Jul 1
Tammy L Martin
General Counsel and Secretary · bought 1,202 at $0.61
$733
8.7% of stake
Jul 1
Glen R Ives
President · bought 1,262 at $0.61
$770
0.6% of stake
Mar 27
Andrew Merriman
Chief Operating Officer · bought 2,000 at $0.64
$1k
0.4% of stake
Mar 27
Glen R Ives
President · bought 2,000 at $0.62
$1k
1.0% of stake
Mar 26
Glen R Ives
President · bought 10,000 at $0.66
$7k
5.3% of stake
Mar 25No plan
Charles Thomas McMillen
Director · sold 30,000 at $0.70
$21k
11% of stake
Mar 18No plan
Charles Thomas McMillen
Director · sold 55,000 at $0.80
$44k
17% of stake
Mar 18
Andrew Merriman
Chief Operating Officer · bought 3,000 at $0.80
$2k
0.6% of stake
Dec 19, 2025No plan
Jay O Wright
General Counsel, Secretary · sold 30,000 at $1.05
$32k
0.4% of stake
Dec 15, 2025 – Dec 16, 2025No plan
Jay O Wright
General Counsel, Secretary · sold 18,000 at avg $1.08
$19k
0.3% of stake
Dec 10, 2025 – Dec 12, 2025No plan
Jay O Wright
General Counsel, Secretary · sold 188,000 at avg $1.19
$224k
2.6% of stake
Nov 28, 2025 – Dec 1, 2025No plan
Jay O Wright
General Counsel, Secretary · sold 53,000 at avg $1.05
$56k
0.7% of stake
Nov 14, 2025 – Nov 17, 2025No plan
Jay O Wright
General Counsel, Secretary · sold 100,000 at avg $1.15
$115k
1.3% of stake
Nov 11, 2025 – Nov 13, 2025No plan
Jay O Wright
General Counsel, Secretary · sold 220,000 at avg $1.17
$258k
2.8% of stake
Sep 15, 2025 – Sep 16, 2025No plan
Jay O Wright
General Counsel, Secretary · sold 100,000 at avg $1.11
$111k
1.3% of stake
Sep 10, 2025 – Sep 12, 2025No plan
Jay O Wright
General Counsel, Secretary · sold 233,000 at avg $1.12
$261k
2.9% of stake
Sep 5, 2025 – Sep 9, 2025No plan
Jay O Wright
General Counsel, Secretary · sold 446,700 at avg $1.12
$498k
5.2% of stake
Sep 3, 2025No plan
Mark C Fuller
Other · sold 500,000 at $1.12
$560k
7.6% of stake
Aug 27, 2025 – Aug 28, 2025No plan
Jay O Wright
General Counsel, Secretary · sold 64,000 at avg $1.04
$67k
0.7% of stake
Aug 22, 2025 – Aug 26, 2025No plan
Jay O Wright
General Counsel, Secretary · sold 85,000 at avg $1.04
$88k
1.0% of stake
Aug 18, 2025 – Aug 19, 2025No plan
Jay O Wright
General Counsel, Secretary · sold 351,000 at avg $1.07
$375k
3.9% of stake
May 19, 2025No plan
Mark C Fuller
Director · sold 500,000 at $1.05
$525k
7.0% of stake
May 19, 2025No plan
Jay O Wright
General Counsel, Secretary · sold 259,400 at $1.07
$278k
2.8% of stake
Mar 5, 2025 – Mar 6, 2025No plan
Jay O Wright
General Counsel, Secretary · sold 500,000 at avg $1.43
$717k
5.0% of stake
Mar 5, 2025 – Mar 6, 2025No plan
Mark C Fuller
Director · sold 500,000 at avg $1.42
$709k
6.6% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch CTM, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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Spot a number that looks wrong? Check it in CTM's SEC filings or

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Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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