Transaction · 0001877939-26-000087

Martin Tammy L

MARTIN TAMMY L, GC, SECY, 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 16427.000000 shares. A 10b5-1 reference was not detected in the stored filing text.

Open-market buySEC transaction code PGC, SECY
CTMCastellum, Inc.
Trade date
Oct 01, 2026
Filing date
Oct 01, 2026
View on SEC Insider profile
Estimated value$747Shares × reported price
Shares traded1.39k$0.54 per share
Holdings after16.4kDirect
% of reported position traded9.29%This security and ownership context
How reported position traded is calculated

Shares purchased ÷ (holdings after − shares purchased). Estimated position before: 15,031 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.

CTM price since this filing

Daily closing prices, with the filing date and available return windows
CTM · Daily closing priceLoading daily prices…
Filing dateReturn windows appear as prices become available.
Pre-filing1mo ago1w ago +0.0%1d ago +0.0%
Returns since7d -1.6%30d90d180d1y

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
Buy
Code P
Identifier
0001877939-26-000087
Common Stock
Transaction date
Oct 01, 2026
Filed Oct 01, 2026, 08:09 PM · 0d delay
Shares
1,396 sh
$0.54 per share
Estimated value
$747
Computed from shares × price
Holdings after
16,427 sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

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

+22 points

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

Positive filing signal

This filing has a modest positive filing-only score. Treat it as a useful flag for review, not as a buy signal.

How this score is calculated
  • open_market_purchase+12 points

    transaction_code = P

    Code P is a discretionary open-market purchase.
  • direct_ownership+6 points

    direct_or_indirect_ownership = D

    Direct ownership reports the insider's personal stake.
  • timely_filing+4 points

    reporting_delay_days = 0

    Filing reported within two business days of the transaction.
Read the scoring methodology

Signed filing-only points, not a probability or expected return. Version v1.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

General Counsel and Secretary

Officer YesDirector No10% NoOther No
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 · 0001877939-26-000087
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