---
schema_version: "secwatch.filing_event.v1"
accession: "0001575872-23-000459"
form_type: "8-K"
ticker: "CTM"
cik: "0001877939"
company_name: "Castellum, Inc."
filed_at: "2023-03-28T23:59:59+00:00"
generated_at: "2026-06-17T13:47:28.037054+00:00"
event_type: "m_and_a"
sentiment: "positive"
materiality_score: 0.8
calibrated_materiality_score: 0.8
confidence: "high"
source: SEC EDGAR
---

# Castellum closes GTMR acquisition for ~4.9M shares and $1.25M cash; pro forma revenue >$50M

## Summary
- Acquired 100% of GTMR for 4,866,570 restricted shares and $1,250,000 cash ($350,000 held back for working capital).
- GTMR is a $10M revenue government contractor; Castellum expects immediate accretion on revenue, cash profit, and net income per share.
- Pro forma revenue run rate exceeds $50M; GTMR adds ~60 employees and a prime contract vehicle at Pax River.
- Tax-free reorganization under Section 368; over 80% of consideration in stock.
- Castellum expects to close another non-binding LOI within 10-20 days and continues acquisition pipeline.

## SEC filing metadata
- accession: 0001575872-23-000459
- form_type: 8-K
- ticker: CTM
- cik: 0001877939
- company_name: Castellum, Inc.
- filed_at: 2023-03-28T23:59:59+00:00
- event_type: m_and_a
- sentiment: positive
- materiality_score: 0.8
- calibrated_materiality_score: 0.8
- confidence: high
- sec_items: 1.01, 3.02, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1877939/000157587223000459/0001575872-23-000459-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1877939/000157587223000459/ctm-20230322.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001575872-23-000459
- JSON: https://secwatch.observer/filing/0001575872-23-000459.json
- Plain text: https://secwatch.observer/filing/0001575872-23-000459.txt

## Key facts
- Material Agreements
  Castellum, Inc. entered into Agreement and Plan of Merger with Global Technology and Management Resources, Inc. valued at $1,250,000 in cash (effective 2023-03-22).
  - Action: entry
  - Agreement: merger
  - Counterparty: Global Technology and Management Resources, Inc.
  - Value: $1,250,000 in cash
  - Effective: 2023-03-22
  source text: On March 22, 2023 Castellum, Inc. (the “Company”), entered into an Agreement and Plan of Merger (the “Agreement”) by and among GTMR Merger Sub, Inc., a Delaware corporation and wholly-owned subsidiary of the Company (the “Merger Sub”), Global Technology and Management Resources, Inc., a Maryland Corporation (“GTMR”), the stockholders of GTMR, and James Morton, as the representative of the Stockholders (the “Stockholders Representative”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1877939/000157587223000459/0001575872-23-000459-index.htm

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