CTM
insider transactionsCastellum, Inc. — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
Cluster buy signal: Multiple insiders at the same company buying around the same time — often a stronger signal than a single buy. 2 different insiders made open-market purchases in the last 365 days, totalling $11.6K.
Net shares · 365d
-68.0K
17.0K buy · 85.0K sell
Net value · 365d
-$53.7K
$11.6K in · $65.2K out
Sentiment · 365d
Net selling
15% buying · 85% selling
Open-market trades · 365d
6
17.0K buy · 85.0K sell
Net buy / sell volume
Not enough data to chart yet.
Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
All transactions
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Grant·A
Chief Operating Officer
$604
1.3K sh · $0.45
Own +0%
-
Grant·A
General Counsel and Secretary
$604
1.3K sh · $0.45
Own +11%
-
Grant·A
David T Bell KEY
Chief Financial Officer
$604
1.3K sh · $0.45
Own +9%
-
Buy·P
Chief Operating Officer
$1.3K
2.0K sh · $0.64
Own +0%
-
Buy·P
Glen R Ives KEY
President
$1.2K
2.0K sh · $0.62
Own +1%
-
Buy·P
Glen R Ives KEY
President
$6.6K
10.0K sh · $0.66
Own +5%
-
Sell·S
Director
$21.1K
30.0K sh · $0.70
Own -11%
-
Buy·P
Chief Operating Officer
$2.4K
3.0K sh · $0.80
Own +1%
-
Sell·S
Director
$44.1K
55.0K sh · $0.80
Own -17%
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| Mar 31, 2026 | Andrew Merriman | Grant A | 1.3K | $604 |
| Mar 31, 2026 | Tammy L Martin | Grant A | 1.3K | $604 |
| Mar 31, 2026 | David T Bell KEY | Grant A | 1.3K | $604 |
| Mar 27, 2026 | Andrew Merriman | Buy P | 2.0K | $1.3K |
| Mar 27, 2026 | Glen R Ives KEY | Buy P | 2.0K | $1.2K |
| Mar 26, 2026 | Glen R Ives KEY | Buy P | 10.0K | $6.6K |
| Mar 25, 2026 | Charles Thomas Mcmillen | Sell S | 30.0K | $21.1K |
| Mar 18, 2026 | Andrew Merriman | Buy P | 3.0K | $2.4K |
| Mar 18, 2026 | Charles Thomas Mcmillen | Sell S | 55.0K | $44.1K |
About CTM insider trading
This page tracks insider transactions for Castellum, Inc. (CTM) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.