---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-24-052536"
form_type: "8-K"
ticker: "CTM"
cik: "0001877939"
company_name: "Castellum, Inc."
filed_at: "2024-12-30T23:59:59+00:00"
generated_at: "2026-05-28T22:52:08.809916+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Castellum prices $3.7M public offering of 4.355M shares at $0.85/share

## Summary
- 4,355,000 shares offered at $0.85 each; gross proceeds ~$3.7M before fees and expenses.
- Closing expected December 30, 2024; net proceeds for working capital and general corporate purposes.
- Company and certain officers/directors subject to 60-day lock-up; six-month ban on variable-rate transactions.
- Maxim Group LLC acting as sole placement agent with 7.0% cash fee and up to $60,000 expense reimbursement.

## SEC filing metadata
- accession: 0001628280-24-052536
- form_type: 8-K
- ticker: CTM
- cik: 0001877939
- company_name: Castellum, Inc.
- filed_at: 2024-12-30T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 1.01, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1877939/000162828024052536/0001628280-24-052536-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1877939/000162828024052536/ctm-20241226.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-24-052536
- JSON: https://secwatch.observer/filing/0001628280-24-052536.json
- Plain text: https://secwatch.observer/filing/0001628280-24-052536.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.