---
schema_version: "secwatch.filing_event.v1"
accession: "0001877939-26-000075"
form_type: "8-K"
ticker: "CTM"
cik: "0001877939"
company_name: "Castellum, Inc."
filed_at: "2026-08-31T20:03:15+00:00"
generated_at: "2026-08-31T20:04:13.520649+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Castellum's $32.8M NAVAIR modification boosts special missions ceiling to $136.2M

## Summary
- $32.8M modification to GTMR's NAVAIR PMA-290 order; contract ceiling now $136.2M.
- ~$1.1M funded; work under funded portion expected complete by March 2027.
- Scope covers ISRT programs: P-8A, MQ-4C Triton, Minotaur, Special Missions Platforms.
- Designated largest prime contract win in Castellum's history; no new competition.
- Supports U.S. Navy/Marine Corps; expansion builds on existing SeaPort-NxG contract.

## SEC filing metadata
- accession: 0001877939-26-000075
- form_type: 8-K
- ticker: CTM
- cik: 0001877939
- company_name: Castellum, Inc.
- filed_at: 2026-08-31T20:03:15+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1877939/000187793926000075/0001877939-26-000075-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1877939/000187793926000075/ctm-20260831.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001877939-26-000075
- JSON: https://secwatch.observer/filing/0001877939-26-000075.json
- Plain text: https://secwatch.observer/filing/0001877939-26-000075.txt

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