Corporate Office Properties Trust Announces Second and Third Quarter 2009 Earnings Conference Calls

Business Wire, June 02, 2009

COLUMBIA, Md. -- Corporate Office Properties Trust (COPT) (NYSE:OFC) announces details for its second and third quarter 2009 financial results. Please join Randall M. Griffin, President and Chief Executive Officer, Roger A. Waesche, Jr., Executive Vice President and Chief Operating Officer, Stephen E. Riffee, Executive Vice President and Chief Financial Officer, and Mary Ellen Fowler, Senior Vice President and Treasurer, for a conference call and live webcast for each quarter.

Second Quarter 2009:

[Table Omitted]

Please use the following link to pre-register and view important information about this conference call. Pre-registering is not mandatory but is recommended as it will provide you immediate entry into the call and will facilitate the timely start of the conference. Pre-registration only takes a few moments and you may pre-register at anytime, including up to and after the call start time. To pre-register, please click on the below link:https://www.theconferencingservice.com/prereg/key.process?key=PN9KBNJAM

You may also pre-register in the Investor Relations section of the Company’s website at www.copt.com. Alternatively, you may be placed into the call by an operator by calling the number provided above at least 5 to 10 minutes before the start of the call. A replay of this call will be available beginning Thursday, July 30 at 3:00 p.m. Eastern Time through Thursday, August 13 at midnight Eastern Time. To access the replay within in the United States, please call 888-286-8010 and use passcode 48082544. To access the replay outside the United States, please call 617-801-6888 and use passcode 48082544.

Third Quarter 2009:

[Table Omitted]

Please use the following link to pre-register and view important information about this conference call. Pre-registering is not mandatory but is recommended as it will provide you immediate entry into the call and will facilitate the timely start of the conference. Pre-registration only takes a few moments and you may pre-register at anytime, including up to and after the call start time. To pre-register, please click on the below link:https://www.theconferencingservice.com/prereg/key.process?key=P86DV6HWU

You may also pre-register in the Investor Relations section of the Company’s website at www.copt.com. Alternatively, you may be placed into the call by an operator by calling the number provided above at least 5 to 10 minutes before the start of the call. A replay of this call will be available beginning Thursday, October 29 at 3:00 p.m. Eastern Time through Thursday, November 12 at midnight Eastern Time. To access the replay within in the United States, please call 888-286-8010 and use passcode 18266981. To access the replay outside the United States, please call 617-801-6888 and use passcode 18266981.

The conference calls will also be available via live webcast in the Investor Relations section of the Company’s website at www.copt.com. A replay of the conference calls will be immediately available via webcast in the Investor Relations section of the Company’s website.

Company Information

Corporate Office Properties Trust (COPT) (NYSE:OFC) is a specialty office real estate investment trust (REIT) that focuses on strategic customer relationships and specialized tenant requirements in the U.S. Government, Defense Information Technology and Data sectors. The Company acquires, develops, manages and leases properties which are typically concentrated in large office parks primarily located adjacent to government demand drivers and/or in growth corridors. As of March 31, 2009, the Company owned 259 office and data properties totaling 19.4 million rentable square feet, which includes 19 properties totaling 852,000 square feet held through joint ventures. The Company’s portfolio primarily consists of technically sophisticated buildings in visually appealing settings that are environmentally sensitive, sustainable and meet unique customer requirements. COPT is an S&P MidCap 400 company and more information can be found at www.copt.com.

Forward-Looking Information

This press release may contain “forward-looking” statements, as defined in Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, that are based on the Company’s current expectations, estimates and projections about future events and financial trends affecting the Company. Forward-looking statements can be identified by the use of words such as “may”, “will”, “should”, “expect”, “estimate” or other comparable terminology. Forward-looking statements are inherently subject to risks and uncertainties, many of which the Company cannot predict with accuracy and some of which the Company might not even anticipate. Accordingly, the Company can give no assurance that these expectations, estimates and projections will be achieved. Future events and actual results may differ materially from those discussed in the forward-looking statements.