Castellum, Inc.

CTMNYSE

$0.630.00 (+0.48%)as of Oct 2, 2026

Legend

Insider buy

Insider sell

Congress buy

Congress sell

Hedge Funds
bought vs soldGreener markers show more buyers; redder markers show more sellers.

Company share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size.

Insider buy
Insider sell
Congress buy
Congress sell
Hedge Funds bought vs sold

Share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size. Greener fund markers mean more buyers.

Insider Buy
Insider Sell
Congress Buy
Congress Sell
Hedge funds bought vs sold
BuybackNo changeNet dilution

Castellum, Inc. price and activity chart data

Showing the 1Y range: Oct 2, 2025 to Oct 2, 2026. Price (-43.2%). 0 insider or congressional trades plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
Date	Category	Person	Role	Action	Amount	Change in holding

Largest institutional holders

13F · Q2 2026

Fund	% of company held	Value	% of portfolio	Quarterly activity
Vanguard Capital Management LLC	3.27%	$2.23M	0.00%	Not reported
Meridian Wealth Management, LLC	0.91%	$621K	0.02%	Not reported
Geode Capital Management, LLC	0.86%	$588K	0.00%	Not reported
Captrust Financial Advisors	0.66%	$451K	0.00%	Not reported
Vanguard Fiduciary Trust Co	0.52%	$355K	0.00%	Not reported
State Street Corp	0.32%	$219K	0.00%	Not reported
BlackRock, Inc.	0.28%	$191K	0.00%	Not reported
Savvy Advisors, Inc.	0.23%	$159K	0.00%	Reduce 0.68%
UBS Group AG	0.22%	$150K	0.00%	Not reported
Northern Trust Corp	0.18%	$123K	0.00%	Not reported
Virtu Financial LLC	0.18%	$121K	0.00%	Not reported
Jane Street Group, LLC	0.14%	$92.9K	0.00%	Not reported
Bridgeway Capital Management, LLC	0.10%	$68.2K	0.00%	Not reported
HUB Investment Partners, LLC	0.06%	$41.3K	0.00%	New Not reported
Creative Planning	0.05%	$36K	0.00%	Not reported
Almanack Investment Partners, LLC.	0.05%	$36K	0.00%	Not reported
Two Sigma Securities, LLC	0.04%	$29.2K	0.00%	Not reported
Arq Wealth Advisors, LLC	0.04%	$22.8K	0.00%	New Not reported
Pathstone Holdings, LLC	0.03%	$22.4K	0.00%	Not reported
Vanguard Global Advisers, LLC	0.03%	$19.7K	0.00%	Not reported
Kestra Private Wealth Services, LLC	0.03%	$19.6K	0.00%	Not reported
Capital Advisors Inc	0.02%	$15.8K	0.00%	Not reported
XTX Topco Ltd	0.02%	$15.8K	0.00%	Not reported
ACT Advisors, LLC.	0.02%	$15.2K	0.01%	New Not reported
PKS Advisory Services, LLC	0.02%	$13.6K	0.00%	New Not reported
Blue Trust, Inc.	0.02%	$10.6K	0.00%	Not reported
Inscription Capital, LLC	0.01%	$9K	0.00%	Not reported
Welch Group, LLC	0.01%	$7.2K	0.00%	Not reported
Jones Financial Companies LLLP	0.01%	$4.52K	0.00%	Not reported
Tower Research Capital LLC (TRC)	0.01%	$4.23K	0.00%	Not reported
Cape Investment Advisory, Inc.	0.00%	$1.44K	0.00%	New Not reported
TD Waterhouse Canada Inc.	0.00%	$361	0.00%	Not reported
Osaic Holdings, Inc.	0.00%	$154	0.00%	Not reported
Harbour Investments, Inc.	0.00%	$108	0.00%	Not reported
Clearstead Advisors, LLC	0.00%	$72	0.00%	Not reported

End of history · 35 holders

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