---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-21-103265"
form_type: "8-K"
ticker: "CDP"
cik: "0000860546"
company_name: "COPT DEFENSE PROPERTIES"
filed_at: "2021-08-11T23:59:59+00:00"
generated_at: "2026-06-29T15:54:27.021010+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# COPT's operating partnership issues $400M 2.000% Senior Notes due 2029

## Summary
- Corporate Office Properties, L.P. issued $400M aggregate principal of 2.000% Senior Notes due 2029.
- The notes are fully and unconditionally guaranteed by Corporate Office Properties Trust (COPT).
- The offering was consummated on August 11, 2021, under an existing shelf registration statement.
- The notes are governed by a supplemental indenture dated August 11, 2021, with U.S. Bank as trustee.

## SEC filing metadata
- accession: 0001104659-21-103265
- form_type: 8-K
- ticker: CDP
- cik: 0000860546
- company_name: COPT DEFENSE PROPERTIES
- filed_at: 2021-08-11T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 1.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/860546/000110465921103265/0001104659-21-103265-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/860546/000110465921103265/tm2124671d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-21-103265
- JSON: https://secwatch.observer/filing/0001104659-21-103265.json
- Plain text: https://secwatch.observer/filing/0001104659-21-103265.txt

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