CTM insider trading — Castellum, Inc.
Over the last 90 days, insiders at Castellum, Inc. (CTM) made 5 open-market purchases worth $34K and 0 open-market sales worth $0, making them net buyers by $34K. The largest purchase was by Merriman Andrew (Chief Operating Officer), who bought 50,000 shares for $31K on Sep 9, 2026. 4 different insiders bought shares in this period — a cluster buy, which many investors watch closely.
Updated Oct 16, 2026.
Recent CTM insider transactions
Every Form 4 filed by Castellum, Inc. officers, directors and 10% owners in the last 90 days, newest first. P = open-market purchase, S = open-market sale; other codes are awards, option exercises, tax withholding or gifts.
| Trade date | Insider | Role | Type | Ownership | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|---|
| Oct 1, 2026 | Martin Tammy L | General Counsel and Secretary | P · Purchase | Direct | 1,396 | $0.54 | $747 | Form 4 |
| Oct 1, 2026 | Bell David T | Chief Financial Officer | P · Purchase | Direct | 1,396 | $0.54 | $747 | Form 4 |
| Oct 1, 2026 | Merriman Andrew | Chief Operating Officer | P · Purchase | Direct | 1,396 | $0.54 | $747 | Form 4 |
| Oct 1, 2026 | Ives Glen R | President | P · Purchase | Direct | 1,700 | $0.54 | $910 | Form 4 |
| Sep 9, 2026 | Merriman Andrew | Chief Operating Officer | P · Purchase | Direct | 50,000 | $0.62 | $31K | Form 4 |
CTM insider trading FAQ
Are insiders buying CTM stock?
Yes. In the last 90 days, Castellum, Inc. insiders made 5 open-market purchases totaling $34K, and no open-market sales. Purchases with the insider's own money are generally seen as a stronger signal than sales, which happen for many reasons (taxes, diversification, planned 10b5-1 sales).
Who are the insiders trading CTM?
Recent buyers: Bell David T, Ives Glen R, Martin Tammy L, Merriman Andrew.
Where does CTM insider trading data come from?
Every transaction comes from SEC Form 4 filings on EDGAR. Company officers, directors and 10% owners must file a Form 4 within two business days of buying or selling. InsiderBolt reads these filings directly from the SEC.
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Insider trading data is for informational purposes only and is not investment advice. Filings can be amended; always confirm details on SEC EDGAR.