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buyModerate cluster of 4

Tammy L Martin bought $736 of CTM

General Counsel and Secretary at Castellum, Inc.. 1,202 shares at an average of $0.61, traded Jul 1, 2026, filed Jul 2, 2026.

Conviction score
41
Value
$736
1,202 shares
Holdings after
15,031
+9% from before
From 52-week low
+35%
low $0.54, close $0.73
From 52-week high
-51%
high $1.49, as of Jul 1, 2026

Score components

  • Role
    Officer
    +15
  • Trade size
    $736 at market
    0
  • Relative to holdings
    Holdings up 9%
    +3
  • Price context
    51% below the 52-week high
    +8
  • Cluster
    4 insiders buying within 14 days
    +15
  • Repeat buying
    First buy in 90 days
    0
  • Track record
    Too few past buys to judge (0 with prices)
    0

What happened after comparable buys

Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.

Price around the trade, and since

From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.

CTMOct 12, 2026 · close 0.60
Since filing Jul 2, 2026: -13.7%SPY +4.7% · excess -18.4%

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™

Rows in this filing

Every transaction in Form 4 0001877939-26-000059, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Jul 1, 2026POpen-market purchase
Common Stock
+1,202$0.61$73615,031Jul 2, 2026

Related signals

Other insiders at Castellum, Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
48Moderate
CTMbuy 4
Castellum, Inc.
David T Bell
Chief Financial Officer
$747
1,396 shares
+8%
38Weak
CTMbuy 4
Castellum, Inc.
Glen R Ives
President
$910
1,700 shares
+1%
43Moderate
CTMbuy 4
Castellum, Inc.
Andrew Merriman
Chief Operating Officer
$747
1,396 shares
+0%
41Moderate
CTMbuy 4
Castellum, Inc.
Tammy L Martin
General Counsel and Secretary
$747
1,396 shares
+9%
28Weak
CTMbuy
Castellum, Inc.
Andrew Merriman
Chief Operating Officer
$31k
50,000 shares
+9%
48Moderate
CTMbuy 4
Castellum, Inc.
David T Bell
Chief Financial Officer
$736
1,202 shares
+7%
38Weak
CTMbuy 4
Castellum, Inc.
Glen R Ives
President
$772
1,262 shares
+1%
38Weak
CTMbuy 4
Castellum, Inc.
Andrew Merriman
Chief Operating Officer
$736
1,202 shares
+0%
20Weak
CTMsell
Castellum, Inc.
Charles Thomas McMillen
director
$21k
30,000 shares
-11%
51Moderate
CTMbuy 2
Castellum, Inc.
Glen R Ives
President
$1,231
2,000 shares
+1%

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

Tammy L Martin bought $736 of CTM | InsiderTell