---
schema_version: "secwatch.filing_event.v1"
accession: "0000860546-23-000039"
form_type: "8-K"
ticker: "CDP"
cik: "0000860546"
company_name: "COPT DEFENSE PROPERTIES"
filed_at: "2023-09-05T23:59:59+00:00"
generated_at: "2026-06-11T00:18:04.743339+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Corporate Office Properties Trust rebrands to COPT Defense Properties; ticker changes to CDP

## Summary
- Name change to COPT Defense Properties effective Sept 15, 2023; NYSE ticker changes from OFC to CDP.
- 100% of committed capital since 2016 has been in Defense/IT development projects.
- CEO states defense focus insulates portfolio from office sector work-from-home headwinds.
- No shareholder action required for name or ticker symbol change.

## SEC filing metadata
- accession: 0000860546-23-000039
- form_type: 8-K
- ticker: CDP
- cik: 0000860546
- company_name: COPT DEFENSE PROPERTIES
- filed_at: 2023-09-05T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 5.03, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/860546/000086054623000039/0000860546-23-000039-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/860546/000086054623000039/ofc-20230905.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000860546-23-000039
- JSON: https://secwatch.observer/filing/0000860546-23-000039.json
- Plain text: https://secwatch.observer/filing/0000860546-23-000039.txt

## Key facts
- Governance Changes
  COPT DEFENSE PROPERTIES: Amended declaration of trust to change company name to COPT Defense Properties, effective September 15, 2023 (effective 2023-09-15).
  - Change: charter amendment
  - Effective: 2023-09-15
  source text: On September 5, 2023, Corporate Office Properties Trust (the “Company”) filed Articles of Amendment to its Amended and Restated Declaration of Trust (the “Articles of Amendment”) to change its name to COPT Defense Properties effective as of September 15, 2023.
  evidence_url: https://www.sec.gov/Archives/edgar/data/860546/000086054623000039/0000860546-23-000039-index.htm

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