Castellum (CTM) General Counsel Tammy L. Martin Buys 1,396 Shares

What Happened Tammy L. Martin, General Counsel and Secretary of Castellum, Inc. (CTM), purchased 1,396 shares of the company's common stock on 2026-10-01 at $0.54 per share, for a total of $747. The transaction was a purchase (code P) and reflects an acquisition of shares rather than a sale.

Key Details

• Transaction date and price: 2026-10-01, 1,396 shares at $0.54 each (total $747).
• Transaction type: Purchase under the Castellum, Inc. 2025 Employee Stock Purchase Plan (ESPP).
• Footnote: The per-share price was calculated at a 15% discount to Castellum's closing price on the NYSE American on September 30, 2026.
• Shares owned after transaction: Not specified in the filing.
• Filing timeliness: The Form 4 was filed with an accession date of 2026-10-01, the same date as the transaction, indicating a timely filing.

Context This was an ESPP purchase — employees often buy shares at a discounted price through such plans. Purchases are generally more informative than routine sales because they indicate insiders acquiring stock, though small-dollar ESPP buys (this one totals $747) are common and typically reflect plan participation rather than a strong market signal.