MARTIN TAMMY L 4
4 · Castellum, Inc. · Filed Mar 31, 2026
Research Summary
AI-generated summary of this filing
Castellum (CTM) General Counsel Tammy L. Martin Buys 1,329 Shares
What Happened Tammy L. Martin, General Counsel and Secretary of Castellum, Inc. (CTM), acquired 1,329 shares of Castellum common stock on 2026-03-31 at $0.45 per share, for a total cost of approximately $604. The acquisition was made under the Castellum, Inc. 2025 Employee Stock Purchase Plan (ESPP), which enabled the purchase at a discounted price.
Key Details
- Transaction date: 2026-03-31. Price: $0.45 per share. Total value: ~$604.
- Transaction type: Acquisition under code A (award/grant or other acquisition) via the 2025 ESPP.
- Footnote: The per-share purchase price reflects a 15% discount to the NYSE American closing price on March 30, 2026.
- Shares owned after the transaction: not stated in the provided filing details.
- Filing timeliness: Reported with a Form 4 dated 2026-03-31 (appears timely).
Context ESPP purchases are employee benefit purchases rather than open-market buys; they often occur at a set discount and can indicate participation in company compensation programs rather than a direct market-timing signal. This was a modest-dollar purchase (about $604), so while it's a purchase by an insider it is relatively small in monetary terms.
Insider Transaction Report
- Award
Common Stock
[F1]2026-03-31$0.45/sh+1,329$604→ 13,829 total
Footnotes (1)
- [F1]Pursuant to the terms of the Castellum, Inc. 2025 Employee Stock Purchase Plan, the reporting person purchased 1,329 shares of common stock of the Registrant. The per share purchase price was calculated at a discount of fifteen percent to the closing price of the Registrant's common stock as quoted on the NYSE American LLC on March 30, 2026.