COPT Defense Properties is an S&P MidCap 400 company and a self-managed REIT. It focuses on owning, operating, and developing properties located near, or sometimes containing, key U.S. Government defense installations and missions, a portfolio it refers to as its Defense/IT Portfolio. Its tenants include the U.S. Government and defense contractors primarily engaged in priority national security activities, which generally require mission-critical and high-security property enhancements. As of June 30, 2026, the Defense/IT Portfolio consisted of 202 properties, including 24 owned through unconsolidated joint ventures, totaling 23.3 million square feet and 96.4% leased. COPT Defense Properties was incorporated in 1988 and is based in Columbia, United States.