---
schema_version: "secwatch.filing_event.v1"
accession: "0001877939-24-000041"
form_type: "8-K"
ticker: "CTM"
cik: "0001877939"
company_name: "Castellum, Inc."
filed_at: "2024-05-29T23:59:59+00:00"
generated_at: "2026-06-01T07:47:35.937131+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Castellum CEO Mark Fuller to step down July 1; COO Glen Ives named successor

## Summary
- CEO Mark Fuller steps down effective July 1, 2024 to pursue other interests; Glen Ives, current COO, becomes CEO.
- Fuller co-founded Castellum and led it from concept to $45M government services firm over 5 years.
- Ives will focus on organic revenue growth, profitability, and selective accretive acquisitions.
- All seven directors elected at annual meeting; Fuller and Wright each had ~3.5M withheld votes out of ~35M cast.
- Stockholders approved amendment to 2021 Stock Incentive Plan increasing reserved shares to 6 million.

## SEC filing metadata
- accession: 0001877939-24-000041
- form_type: 8-K
- ticker: CTM
- cik: 0001877939
- company_name: Castellum, Inc.
- filed_at: 2024-05-29T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 5.02, 5.07, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1877939/000187793924000041/0001877939-24-000041-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1877939/000187793924000041/ctm-20240529.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001877939-24-000041
- JSON: https://secwatch.observer/filing/0001877939-24-000041.json
- Plain text: https://secwatch.observer/filing/0001877939-24-000041.txt

## Key facts
- Executive change
  Glen Ives was appointed as Chief Executive Officer at Castellum, Inc..
  - Action: appointed
  - Role: Chief Executive Officer
  source text: Glen Ives, currently the Chief Operating Officer of the Company, will become the new CEO, effective July 1, 2024.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1877939/000187793924000041/0001877939-24-000041-index.htm
- Executive change
  Mark C. Fuller departed as President and Chief Executive Officer at Castellum, Inc..
  - Action: stepped down
  - Role: President and Chief Executive Officer
  source text: Mark C. Fuller, President and Chief Executive Officer ("CEO") of Castellum, Inc. (the "Company") will be stepping down from those positions effective July 1, 2024 to pursue other interests.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1877939/000187793924000041/0001877939-24-000041-index.htm

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