5/6/2008Corporate Office Properties Trust Reports First Quarter 2008 Results

5/5/2008Corporate Office Properties Trust Closes $225 Million Revolving Construction Facility

5/1/2008Corporate Office Properties Trust Leases 73,000 Square Feet of Development Space in Colorado Springs, Colorado

4/30/2008Corporate Office Properties Trust Signs 41,500 Square Foot Lease at M Square Research Park

4/7/2008Corporate Office Properties Trust Announces First Quarter 2008 Earnings Conference Call

3/25/2008Corporate Office Properties Trust Was the Winner of the 2007 National Commercial Real Estate Customer Service Award for Excellence

3/3/2008Corporate Office Properties Trust to Present at the Citi 2008 Global Property CEO Conference

2/28/2008Corporate Office Properties Trust Declares First Quarter 2008 Dividend

2/13/2008Corporate Office Properties Trust Reports 2007 Fourth Quarter and Year End Results

1/28/2008Corporate Office Properties Trust Announces Tax Treatment of 2007 Distributions

1/8/2008Corporate Office Properties Trust Announces Fourth Quarter and Year-End 2007 Earnings Conference Call

12/18/2007Corporate Office Properties Trust Signs 75,000 Square Foot Lease in Colorado Springs, Colorado

12/6/2007Corporate Office Properties Trust Declares Fourth Quarter 2007 Dividend

11/5/2007Corporate Office Properties Trust Reports Strong Third Quarter 2007 Results

9/24/2007Corporate Office Properties Trust Announces Third Quarter 2007 Earnings Conference Call

9/20/2007Corporate Office Properties Trust Increases Dividend 9.68%

9/13/2007Corporate Office Properties Trust Selected as Master Developer for the Colorado Springs Airport Mixed-Use Business Park

7/31/2007Corporate Office Properties Trust Reports Strong Second Quarter 2007 Results

7/10/2007Corporate Office Properties Trust Announces Date Change for Second Quarter 2007 Earnings Conference Call

6/25/2007Corporate Office Properties Trust Announces Second Quarter 2007 Earnings Conference Call

6/4/2007Corporate Office Properties Trust to Present at the 2007 NAREIT Institutional Investor Forum

5/17/2007Corporate Office Properties Trust Declares Second Quarter 2007 Dividend

5/8/2007Corporate Office Properties Trust Supports New Workforce Moving to Fort George G. Meade

5/2/2007Corporate Office Properties Trust Reports First Quarter 2007 Results

4/5/2007Corporate Office Properties Trust Announces First Quarter 2007 Earnings Conference Call

3/29/2007Corporate Office Properties Trust Announces Promotion of Peg Ohrt

3/21/2007Corporate Office Properties Trust Was the Winner of the 2006 National Commercial Real Estate Customer Service Award for Excellence

3/5/2007Corporate Office Properties Trust to Present at the 2007 Citigroup Global Property CEO Conference

3/1/2007Corporate Office Properties Trust Declares First Quarter 2007 Dividend

2/28/2007Corporate Office Properties Trust Appoints Douglas M. Firstenberg to Board of Trustees

2/14/2007Corporate Office Properties Trust Reports 2006 Fourth Quarter and Year End Results

1/29/2007Corporate Office Properties Trust Announces Tax Treatment of 2006 Distributions

1/17/2007Corporate Office Properties Trust Closes on $363.9 Million Office Portfolio

1/10/2007Corporate Office Properties Trust Announces Fourth Quarter and Year-End 2006 Earnings Conference Call

1/8/2007Corporate Office Properties Trust Signs 74,749 Square Foot Lease in Colorado Springs, Colorado

12/28/2006Corporate Office Properties Trust Signs Leases for 238,000 Square Feet

12/7/2006Corporate Office Properties Trust Declares Fourth Quarter 2006 Dividend

11/16/2006Corporate Office Properties Trust Signs 102,842 Square Foot Lease with Northrop Grumman

10/30/2006Corporate Office Properties Trust Reports Third Quarter 2006 Results

10/13/2006Corporate Office Properties Trust Calls Series F Cumulative Redeemable Preferred Shares for Redemption

10/5/2006Corporate Office Properties Trust Closes on Former Fort Ritchie Army Base

10/3/2006Corporate Office Properties Trust Announces Third Quarter 2006 Earnings Conference Call

9/29/2006Corporate Office Properties Trust Announces Planned Filing of Resale Registration Statement on Form S-3 in Connection with Recent Offering of Exchangeable Senior Notes

9/28/2006Corporate Office Properties Trust Sells Brown's Wharf in Baltimore, Maryland

9/25/2006Corporate Office Properties Trust Announces Promotion of Karen M. Singer

9/21/2006Corporate Office Properties Trust Increases Dividend 10.7%

9/18/2006Corporate Office Properties Trust Further Strengthens Senior Management Team

9/12/2006Corporate Office Properties Announces Pricing of $175 Million of Exchangeable Senior Notes

9/11/2006Corporate Office Properties Announces Offering of $175 Million of Exchangeable Senior Notes

8/29/2006Corporate Office Properties Trust Announces Redemption of Series F Cumulative Redeemable Preferred Shares

8/23/2006Corporate Office Properties Trust Signs 81,186 Square Foot Lease at Pinnacle Towers

8/2/2006Corporate Office Properties Trust Reports Second Quarter 2006 Results

8/1/2006Corporate Office Properties Trust Announces COO and New CFO

7/28/2006Corporate Office Properties Trust Sells 2 Buildings for $42.8 Million Within Its New Jersey Portfolio

7/20/2006Corporate Office Properties Trust Completes Sale of 390,000 Preferred Shares

7/19/2006Corporate Office Properties Trust Announces Second Quarter 2006 Earnings Conference Call

7/17/2006Corporate Office Properties Trust Announces Relocation of Corporate Headquarters

7/14/2006Corporate Office Properties Trust Calls Series E Cumulative Redeemable Preferred Shares for Redemption

7/13/2006Corporate Office Properties Trust Prices Public Offering of $75.0 Million of Preferred Shares

7/11/2006Corporate Office Properties Trust Announces Offering of 2.0 Million Preferred Shares

7/10/2006Corporate Office Properties Trust Closes on a 611,379 Square Foot Building for $78.0 Million in Columbia Gateway Business Park

7/6/2006Corporate Office Properties Trust Closes on 178 Acres of Land Adjacent to the National Business Park

7/5/2006Corporate Office Properties Trust Signs 145,959 Square Foot Lease at the Washington Technology Park II

6/19/2006Corporate Office Properties Trust Signs 193,000 Square Foot Lease with Northrop Grumman

6/5/2006Corporate Office Properties Trust to Present at the 2006 NAREIT Institutional Investor Forum

5/23/2006Corporate Office Properties Trust Closes on Three Office Buildings in Colorado Springs, Colorado

5/18/2006Corporate Office Properties Trust Declares Second Quarter 2006 Dividend

5/1/2006Corporate Office Properties Trust Reports Strong First Quarter 2006 Results

4/28/2006Corporate Office Properties Trust Signs 77,651 Square Foot Lease at the Washington Technology Park II

4/24/2006Corporate Office Properties Trust Completes Sale of 250,000 Common Shares

4/24/2006COPT to Develop Second Building with 110,000 Square Feet for UMBC's Research and Technology Park, bwtech@UMBC

4/17/2006Corporate Office Properties Trust Completes Sale of 1,750,000 Common Shares

4/11/2006Corporate Office Properties Trust Sells 1,750,000 Common Shares

4/5/2006Corporate Office Properties Trust Announces First Quarter 2006 Earnings Conference Call

3/29/2006Corporate Office Properties Trust Sells 57,000 Square Foot Building Within Its New Jersey Portfolio

3/16/2006Corporate Office Properties Trust Declares First Quarter 2006 Dividend

3/13/2006Hot Location: bwtech@UMBC Research Park Proving Intelligent Place to Do Business; COPT to Develop Next Building for U.S. Geological Survey MD-DC-DEL Water Science Center

3/7/2006Corporate Office Properties Trust Awarded First Place for the 2005 National Commercial Real Estate Customer Service Award for Excellence

2/15/2006Corporate Office Properties Trust Reports 2005 Fourth Quarter and Year End Results

1/27/2006Corporate Office Properties Trust Announces Tax Treatment of 2005 Distributions

1/23/2006Corporate Office Properties Trust Closes on a 60,000 Square Foot Office Building in Colorado Springs, Colorado

1/17/2006Corporate Office Properties Trust Announces Fourth Quarter and Year-End 2005 Earnings Conference Call

12/23/2005Corporate Office Properties Trust Closes on $124.5 Million Baltimore Office Portfolio

12/22/2005Corporate Office Properties Trust Closes on Two Office Buildings in Colorado Springs, Colorado

12/21/2005Corporate Office Properties Trust Forms Joint Venture and Acquires Two Buildings for Redevelopment

12/12/2005Corporate Office Properties Trust Signs 125,568 Square Foot Lease at the National Business Park

12/8/2005Corporate Office Properties Trust Declares Fourth Quarter 2005 Dividend

12/7/2005Corporate Office Properties Trust Acquires $9.2 Million Office Building in Columbia Gateway Business Park

12/5/2005Corporate Office Properties Trust to Present at Wachovia Securities 9th Annual Real Estate Securities Conference

10/26/2005Corporate Office Properties Trust Reports Strong Third Quarter 2005 Results

10/24/2005Corporate Office Properties Trust Acquires $17.0 Million Office Building in Frederick, Maryland

10/4/2005Corporate Office Properties Trust (COPT) Earns NAIOP Green Development Award; National Business Park Project Takes Top Honors

10/3/2005Corporate Office Properties Trust Acquires Three Buildings for $27 Million in Colorado Springs, Colorado

9/30/2005Corporate Office Properties Trust Sells 80% Ownership Interest in Its Harrisburg, Pennsylvania Portfolio

9/28/2005Corporate Office Properties Trust Completes Sale of 2.3 Million Common Shares

9/27/2005Corporate Office Properties Trust Announces Third Quarter 2005 Earnings Conference Call

9/22/2005Corporate Office Properties Trust Sells 2.0 Million Common Shares

9/20/2005Corporate Office Properties Trust Acquires 188,819 Square Feet in Columbia, Maryland

9/19/2005Corporate Office Properties Trust Signs 201,200 Square Foot Lease in the Princeton Technology Center

9/15/2005Corporate Office Properties Trust Increases Dividend 9.8%

9/12/2005Corporate Office Properties Trust Sells 152,731 Square Feet within Its New Jersey Portfolio

9/8/2005Corporate Office Properties Trust Names George B. Swintz, Vice President, Asset Management and Leasing

7/27/2005Corporate Office Properties Trust Reports Strong Second Quarter 2005 Results

7/14/2005Corporate Office Properties Trust Announces Second Quarter 2005 Earnings Conference Call

6/6/2005Corporate Office Properties Trust to Present at the 2005 NAREIT Institutional Investor Forum

5/19/2005Corporate Office Properties Trust Declares Second Quarter 2005 Dividend

5/5/2005Corporate Office Properties Trust to Present at 2nd Annual Maxcor REIT Conference

5/5/2005Corporate Office Properties Trust Names Charles J. Fiala, Jr., Senior Vice President, Government Services

5/2/2005Corporate Office Properties Trust Reports Strong First Quarter 2005 Results

4/15/2005Corporate Office Properties Trust Announces First Quarter 2005 Earnings Conference Call

4/11/2005Corporate Office Properties Trust Forms Joint Venture

4/7/2005Corporate Office Properties Trust Acquires 221,702 Square Foot Office Building Complex in Rockville, Maryland

4/4/2005Corporate Office Properties Trust to Present at Credit Suisse First Boston 2005 Real Estate Conference

3/31/2005Corporate Office Properties Trust Acquires 470,000 Square Foot Office Building Complex from Sony

3/7/2005Corporate Office Properties Trust Awarded the 2004 National Commercial Real Estate Customer Service Award for Excellence

2/25/2005Corporate Office Properties Trust Announces That Trustee Betsy Z. Cohen Will Not Stand for Re-Election to the Board of Trustees

2/25/2005Corporate Office Properties Trust Appoints Randall M. Griffin Chief Executive Officer

2/24/2005Corporate Office Properties Trust Declares First Quarter 2005 Dividend

2/10/2005Corporate Office Properties Trust Signs 125,681 Square Foot Lease at the National Business Park

2/9/2005Corporate Office Properties Trust Reports Strong Fourth Quarter and Year-End 2004 Results

1/21/2005Corporate Office Properties Trust Announces Tax Treatment of 2004 Dividend

1/19/2005Corporate Office Properties Trust Announces Fourth Quarter and Year-End 2004 Earnings Conference Call

12/28/2004Corporate Office Properties Trust Acquires Six Buildings in Dahlgren, Virginia

12/7/2004Corporate Office Properties Trust to Present at Wachovia Securities 8th Annual Real Estate Securities Conference

12/2/2004Corporate Office Properties Trust Declares Fourth Quarter 2004 Dividend

10/27/2004Corporate Office Properties Trust Reports Third Quarter 2004 Results

9/30/2004Corporate Office Properties Trust Acquires $21.7 Million Building in Northern Virginia

9/27/2004Corporate Office Properties Trust Signs 162,500 Square Foot Lease with Booz Allen Hamilton Inc.

9/24/2004Corporate Office Properties Announces Third Quarter Earnings Conference Call

9/23/2004Corporate Office Properties Trust Acquires Pinnacle Towers

9/23/2004Corporate Office Properties Trust Completes Sale of 2 Million Common Shares

9/22/2004Corporate Office Properties Trust Announces Public Offering of 2,000,000 Common Shares

9/14/2004Corporate Office Properties Trust Increases Dividend 8.5%

9/7/2004Corporate Office Properties Trust Signs 104,000 Square Foot Lease with Northrop Grumman

7/28/2004Corporate Office Properties Trust Reports Strong Second Quarter 2004 Results

7/26/2004Corporate Office Properties Signs Contract to Acquire Former Fort Ritchie Army Base

6/30/2004Corporate Office Properties Announces Second Quarter Earnings Conference Call

6/11/2004Corporate Office Properties Trust Calls Series B Cumulative Preferred Shares for Redemption

5/17/2004Corporate Office Properties Trust Declares Second Quarter 2004 Dividends

5/5/2004Corporate Office Properties Trust Reports Strong First Quarter 2004 Results

4/26/2004Corporate Office Properties Trust Completes Sale of 2.75 Million Common Shares

4/20/2004Corporate Office Properties Trust Sells 2.75 Million Common Shares

4/15/2004Corporate Office Properties Trust Acquires $16.5 Million York Road Office Building in Hunt Valley, Maryland

4/13/2004Corporate Office Properties Announces First Quarter Earnings Conference Call

3/29/2004Corporate Office Properties Trust Signs 99,524 Square Foot Lease with Northrop Grumman

3/25/2004Corporate Office Properties Trust Acquires St. Mary's County, Maryland Office Portfolio

3/24/2004Corporate Office Properties Trust Names Derrick C. Boegner, Vice President, Asset Management/Leasing

3/24/2004Corporate Office Properties Trust Signs 242,000 Square Foot Lease with Booz Allen Hamilton Inc. at One Dulles Tower

3/11/2004Corporate Office Properties Trust Closes $300 Million Unsecured Credit Facility

3/8/2004Corporate Office Properties Trust Acquires $22.4 Million Crown Point Office Building in Gaithersburg, Maryland

2/27/2004Corporate Office Properties Trust Declares First Quarter 2004 Dividends

2/10/2004Corporate Office Properties Trust Reports Fourth Quarter and Annual 2003 Results

1/14/2004Corporate Office Properties Trust Announces Dividend Return of Capital

1/8/2004Corporate Office Properties Announces Fourth Quarter Earnings Conference Call

1/7/2004Corporate Office Properties Trust Posts 329% Total Shareholder Return for 5 Years, Highest Among All Office REITs; Generates Total Return of 57.6% for 2003

1/6/2004Corporate Office Properties Trust Promotes Key Executives

12/30/2003Corporate Office Properties Trust Announces General Counsel Promotion

12/22/2003Corporate Office Properties Trust Signs 120,000 Square Foot Lease at The National Business Park

12/11/2003Corporate Office Properties Trust Prices Public Offering of $50 Million of Preferred Shares

12/10/2003Corporate Office Properties Trust Announces Offering of 1.4 Million Preferred Shares

12/5/2003Corporate Office Properties Trust Declares Fourth Quarter 2003 Dividends

10/29/2003Corporate Office Properties Trust Reports 14% Increase in FFO Per Share Diluted and 20% Increase in EPS Diluted for Third Quarter 2003

10/10/2003Corporate Office Properties Announces Third Quarter Earnings Conference Call

9/11/2003Corporate Office Properties Trust Increases Dividend 6.82%

8/7/2003Corporate Office Properties Trust Prices Public Offering of $55 Million Preferred Shares

7/30/2003Corporate Office Properties Trust Reports Second Quarter 2003 Results

7/28/2003Corporate Office Properties Trust Acquires 433,814 Square Feet in Northern Virginia

7/24/2003Corporate Office Properties Trust Signs 88,094 Square Foot Lease with The Aerospace Corporation in Northern Virginia

7/8/2003Corporate Office Properties Announces Second Quarter Earnings Conference Call

6/16/2003Corporate Office Properties Trust Repurchases 1 Million Convertible Preferred Units

6/3/2003Corporate Office Properties Trust Acquires 404,665 Square Foot Office Building

5/27/2003Corporate Office Properties Trust Completes Sale of 5.29 Million Common Shares

5/20/2003Corporate Office Properties Trust Sells 4.6 Million Common Shares

5/16/2003Corporate Office Properties Trust Declares Second Quarter 2003 Dividends

4/23/2003Corporate Office Properties Trust Reports Solid First Quarter 2003 Results

4/11/2003Corporate Office Properties Trust Sells 182,000 Square Foot Constellation Centre Building and Sells an Ownership Interest in 695 Route 46, Fairfield, New Jersey Building

4/9/2003Corporate Office Properties Announces First Quarter Earnings Conference Call

3/17/2003Corporate Office Properties Trust Receives Energy Award for Improvements at Westfields Corporate Center

3/13/2003Corporate Realty Management Places Third in the Nation on Independent Tenant Satisfaction Survey

3/11/2003Multimedia Available: Corporate Office Properties Trust Hires Peter Garver as Director, Development Services

3/11/2003Corporate Office Properties Trust Hires Peter Garver as Director, Development Services

3/7/2003Corporate Office Properties Trust Declares First Quarter 2003 Dividends

3/6/2003Corporate Office Properties Trust Acquires 155,000 Square Foot Office Building in Annapolis, Maryland

1/29/2003Corporate Office Properties Trust Reports 7.8% FFO Per Share Growth in 2002; Achieves 26% Total Shareholder Return for 2002, First Among Office REITs

1/27/2003Corporate Office Properties Trust Acquires Major Development Site Adjacent to National Business Park

1/13/2003Corporate Office Properties Trust Announces Dividend Return of Capital

1/8/2003Corporate Office Properties Announces Fourth Quarter Earnings Conference Call

1/6/2003Corporate Office Properties Trust Posts 25.8% Total Shareholder Return for 2002, Highest Among Office REITs; Generates Total Return of 172.2% for Past Four Years

12/19/2002Corporate Office Properties Trust Signs 150,000 Square Foot Lease in Columbia, Maryland

12/6/2002Corporate Office Properties Trust Declares Fourth Quarter Dividend

10/23/2002Corporate Office Properties Trust Announces 6.1% Per Share FFO Growth for Third Quarter 2002; Maintains 94% Occupancy

9/25/2002Corporate Office Properties Announces Third Quarter Earnings Conference Call

9/18/2002Corporate Office Properties Trust Schedules Dedication of 'Dihedrals' Sculpture for September 25

9/13/2002Corporate Office Properties Trust Increases Dividend 4.76%

9/12/2002Corporate Office Properties Trust Commences Construction On 120,000 Square Foot Office Building

8/15/2002Corporate Office Properties Trust Acquires Two Office Buildings in Northern Virginia for $48 Million; 2002 Year to Date Acquisitions Total $108 Million

8/5/2002Corporate Office Properties Trust Acquires $27.3 Million Office Building in Montgomery County, Maryland

7/24/2002Corporate Office Properties Trust Announces 6.3% Per Share FFO Growth for Second Quarter 2002; Maintains 94% Occupancy for the Quarter

6/26/2002Corporate Office Properties Announces Second Quarter Earnings Conference Call

6/24/2002Randall M. Griffin Named Winner of Maryland Entrepreneur of the Year Award for 2002; President and COO of Corporate Office Properties Trust Among Ten Winners

6/3/2002Corporate Office Properties Trust Acquires 145,806 Square Foot Office Building in Baltimore/Washington Corridor

5/17/2002Corporate Office Properties Trust Declares Second Quarter 2002 Dividends

4/24/2002Corporate Office Properties Trust Announces First Quarter 2002 Results With 6.5% Growth in FFO Per Share

4/22/2002Corporate Office Properties Trust Announces Two Leases Totaling 71,243 Square Feet At One Gateway Exchange

4/12/2002Corporate Office Properties Trust Captures Two Awards in NAIOP - Maryland Chapter Competition

4/9/2002Corporate Office Properties Trust Names Mary Ellen Fowler Vice President, Finance and Investor Relations

3/26/2002Corporate Office Properties Announces First Quarter Earnings Conference Call

3/13/2002Corporate Office Properties Trust Announces Expansion of Credit Facility to $150 Million

3/8/2002Corporate Office Properties Trust Declares First Quarter 2002 Dividends

3/7/2002Fortune 500 Company Signs 12,118 Square Foot Lease With Corporate Office Properties Trust; 201 National Business Park Building is Now 100% Leased

3/6/2002Corporate Office Properties Trust Executes 54,088 Square Foot Lease With Fortune 500 Company

3/5/2002Corporate Office Properties Trust Announces Exercise of Over-Allotment and Issuance of 1,261,000 Additional Common Shares

2/28/2002Corporate Office Properties Trust Prices Public Offering of 9,700,000 Common Shares

2/15/2002Corporate Office Properties Trust and Its Largest Shareholder Plan to Sell 9,400,000 Common Shares; Selling Shareholder Plans to Sell 8,600,000 Common Shares

1/30/2002Corporate Office Properties Trust Announces 2001 Results With 10.3% Growth in FFO Per Share; Achieves 29% Total Shareholder Return for 2001, First Among Office REITs

1/29/2002Corporate Office Properties Trust Executes 16,076 Square Foot Lease With Lurgi Lentjes North America, Inc.

1/10/2002Corporate Office Properties Trust Posts Highest Total Shareholder Return Among Office REITs for Past 3 Years

1/8/2002Corporate Office Properties Trust Announces Dividend Return of Capital

1/2/2002Corporate Office Properties Announces Fourth Quarter Earnings Conference Call