COPT Announces Fourth Quarter and Year End 2017 Earnings Conference Call

Corporate Office Properties Trust (“COPT” or the “Company”) (NYSE: OFC) announces its fourth quarter and year end 2017 earnings release and conference call will take place as follows:

Fourth Quarter & Year End 2017:

Earnings Release Date: Thursday, February 8, 2018 after the market closes   Conference Call Date: Friday, February 9, 2018   Time: 12:00 p.m. Eastern Time   Telephone Number: (within the U.S.) 855-463-9057   Telephone Number: (outside the U.S.) 661-378-9894   Passcode: 8784659  

The conference call will also be available via live webcast in the ‘Investors’ section of the Company’s website at www.copt.com.

Replay Information

A replay of this call will be available beginning at 3:00 p.m. Eastern Time on Friday, February 9, through 3:00 p.m. Eastern Time on Friday, February 23. To access the replay within the United States, please call 855-859-2056 and use passcode 8784659. To access the replay outside the United States, please call 404-537-3406 and use passcode 8784659. A replay of the conference call will also be available immediately after the call on the ‘Investors’ section of the Company’s website.

Company Information

COPT is an office REIT that owns, manages, develops and selectively acquires office and data center properties in locations that support the United States Government and its contractors, most of whom are engaged in national security, defense and information technology (“IT”) related activities servicing priority missions (“Defense/IT Locations”). The Company also owns a portfolio of office properties located in select urban/urban-like submarkets within its regional footprint with durable Class-A office fundamentals and characteristics (“Regional Office Properties”). As of September 30, 2017, the Company derived 87% of core portfolio annualized revenue from Defense/IT Locations and 13% from its Regional Office Properties. As of September 30, 2017 and including six buildings owned through an unconsolidated joint venture, COPT’s core portfolio of 153 office properties encompassed 16.7 million square feet and was 95.1% leased. As of the same date, the Company also owned one wholesale data center with a critical load of 19.25 megawatts.