---
schema_version: "secwatch.filing_event.v1"
accession: "0001877939-25-000106"
form_type: "8-K"
ticker: "CTM"
cik: "0001877939"
company_name: "Castellum, Inc."
filed_at: "2025-10-14T23:59:59+00:00"
generated_at: "2026-05-17T03:58:50.749369+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Castellum subsidiary adds IT services to GSA MAS contract

## Summary
- Specialty Systems, Inc. added SIN 54151S to its GSA MAS contract, enabling bids for IT professional services.
- Allows onboarding of mentor-protégé joint venture with Epic Systems, Inc. under the same SIN.
- COO Drew Merriman says this expands ability to compete for full-and-open and small-business set-aside opportunities.
- No financial terms disclosed; contract scope broadens Castellum's addressable market.

## SEC filing metadata
- accession: 0001877939-25-000106
- form_type: 8-K
- ticker: CTM
- cik: 0001877939
- company_name: Castellum, Inc.
- filed_at: 2025-10-14T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1877939/000187793925000106/0001877939-25-000106-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1877939/000187793925000106/ctm-20251014.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001877939-25-000106
- JSON: https://secwatch.observer/filing/0001877939-25-000106.json
- Plain text: https://secwatch.observer/filing/0001877939-25-000106.txt

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