Transaction · 0001877939-26-000086

Bell David T

Bell David T, CFO, reported an open-market or private purchase at Castellum, Inc. involving 1396.000000 shares for an estimated $747.14. Reported holdings after the transaction were 18651.000000 shares. A 10b5-1 reference was not detected in the stored filing text.

Open-market buySEC transaction code PCFO
CTMCastellum, Inc.
Filing timeOct 01
Trade dateOct 01, 2026
Filing · SECView on SEC
InsiderProfile
% of reported position traded8.09%Shares purchased ÷ (holdings after − shares purchased). Estimated position before: 17,255 shares.

Row-level estimate for this security and ownership context, not the insider’s complete portfolio. Joint ownership, other transactions in the filing, amendments and footnotes can affect interpretation.

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows
Price at filing
$0.62
Pre-filing
1mo ago1w ago +0.0%1d ago +0.0%
Returns since
7d30d90d180d1y

CTM price since this filing

30 days of pre-filing context and vertical markers at the filing date plus 7d / 30d / 90d / 180d / 1y afterwards
CTM since 2026-10-01Filed yesterday · 1 day of post-filing data
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Filing datePost-filing windows (7d, 30d, 90d, 180d, 1y)30 days of pre-filing context

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
Buy
Code P
Identifier
0001877939-26-000086
Common Stock
Transaction date
Oct 01, 2026
Filed Oct 01, 2026, 08:09 PM · 0d delay
Shares
1.39k sh
$0.54 per share
Estimated value
$747
Computed from shares × price
Holdings after
18.6k sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $100kLarge $1.00M
CFO Buy Direct Ownership
+32score
Filing-only score

+32

Compact filing score computed from stored Form 4 facts. Version v1.

Strong filing signal

This filing has a high positive filing-only score. It may deserve closer research, but it is not an investment recommendation.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

Chief Financial Officer

Officer YesDirector No10% NoOther Yes
Footnotes & amended
  1. F1

    Pursuant to the terms of the Castellum, Inc. 2025 Employee Stock Purchase Plan, the reporting person purchased 1,396 shares of common stock of the Registrant. The per share purchase price was calculat…

Original filing · 0001877939-26-000086
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Same reporting owner
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