---
schema_version: "secwatch.filing_event.v1"
accession: "0001575872-23-000750"
form_type: "8-K"
ticker: "CTM"
cik: "0001877939"
company_name: "Castellum, Inc."
filed_at: "2023-05-15T23:59:59+00:00"
generated_at: "2026-06-15T01:39:08.007651+00:00"
event_type: "earnings"
sentiment: "negative"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "medium"
source: SEC EDGAR
---

# Castellum Q1 2023 revenue $9.9M, GAAP operating loss $4.7M; acquires GTMR

## Summary
- Q1 2023 revenue $9.9M, gross profit $4.0M, GAAP operating loss $4.7M.
- Non-GAAP Recurring Cash Operating Loss of ($0.5M) excludes $3.7M stock/option expense and $0.5M D&A.
- Completed acquisition of GTMR (annual revenue ~$10M), described as accretive.
- Provides first-time forward revenue guidance for April 2023–March 2024 (exact figure not disclosed).
- CEO Mark Fuller says actions planned to improve cost structure and profitability.

## SEC filing metadata
- accession: 0001575872-23-000750
- form_type: 8-K
- ticker: CTM
- cik: 0001877939
- company_name: Castellum, Inc.
- filed_at: 2023-05-15T23:59:59+00:00
- event_type: earnings
- sentiment: negative
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: medium
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1877939/000157587223000750/0001575872-23-000750-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1877939/000157587223000750/ctm-20230515.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001575872-23-000750
- JSON: https://secwatch.observer/filing/0001575872-23-000750.json
- Plain text: https://secwatch.observer/filing/0001575872-23-000750.txt

## Key facts
- Earnings Releases
  Castellum, Inc. reported the three months ended March 31, 2023 results: revenue $9.9 million.
  - Period: the three months ended March 31, 2023
  - Revenue: $9.9 million
  - Result: reported results
  source text: Revenues for the three months ended March 31, 2023 were $9.9 million.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1877939/000157587223000750/0001575872-23-000750-index.htm
- Earnings Releases
  Castellum, Inc. updated its the 12 month period April 1, 2023 – March 31, 2024 guidance (initiated).
  - Period: the 12 month period April 1, 2023 – March 31, 2024
  - Guidance: initiated
  - Result: guidance update
  source text: provides expected revenue guidance for the 12 month period April 1, 2023 – March 31, 2024.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1877939/000157587223000750/0001575872-23-000750-index.htm

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