| Date | Event |
| 10-Feb-10 | Earnings announcement |
| 12-Jan-10 | Q4 & Year End 2009 Earnings Call scheduled for Thu, Feb 11 |
| 29-Dec-09 | Ex-Date for dividend payment of $0.393 |
| 9-Dec-09 | CORPORATE OFFICE PROPERTIES TRUST Files SEC form 8-K, Amendments to Articles of Inc. or Bylaws; Change in Fiscal Year |
| 30-Oct-09 | CORPORATE OFFICE PROPERTIES TRUST Files SEC form 10-Q, Quarterly Report |
| 29-Oct-09 | Corporate Office Properties Trust Earnings Call scheduled for 11:00 am ET today |
| 28-Oct-09 | CORPORATE OFFICE PROPERTIES TRUST Files SEC form 8-K, Results of Operations and Financial Condition, Financial Statem |
| 28-Sep-09 | Ex-Date for dividend payment of $0.393 |
| 17-Sep-09 | Price hit new 52-week high ($40.59) |
| 16-Sep-09 | Price hit new 52-week high ($39.46) |
| 27-Aug-09 | CORPORATE OFFICE PROPERTIES TRUST Files SEC form 8-K, Change in Directors or Principal Officers |
| 31-Jul-09 | CORPORATE OFFICE PROPERTIES TRUST Files SEC form 10-Q, Quarterly Report |
| 29-Jul-09 | CORPORATE OFFICE PROPERTIES TRUST Files SEC form 8-K, Results of Operations and Financial Condition, Financial Statem |
| 2-Jun-09 | CORPORATE OFFICE PROPERTIES TRUST Files SEC form 8-K, Other Events, Financial Statements and Exhibits |
| 8-May-09 | CORPORATE OFFICE PROPERTIES TRUST Files SEC form 10-Q, Quarterly Report |
| 28-Apr-09 | CORPORATE OFFICE PROPERTIES TRUST Files SEC form 8-K, Results of Operations and Financial Condition, Financial Statem |
| 7-Apr-09 | CORPORATE OFFICE PROPERTIES TRUST Files SEC form 8-K, Other Events, Financial Statements and Exhibits |
| 2-Apr-09 | CORPORATE OFFICE PROPERTIES TRUST Files SEC form 8-K, Regulation FD Disclosure |
| 31-Mar-09 | CORPORATE OFFICE PROPERTIES TRUST Files SEC form 8-K, Regulation FD Disclosure, Financial Statements and Exhibits |
| 6-Mar-09 | CORPORATE OFFICE PROPERTIES TRUST Files SEC form 8-K, Unregistered Sale of Equity Securities, Financial Statements an |
| 27-Feb-09 | CORPORATE OFFICE PROPERTIES TRUST Files SEC form 10-K, Annual Report |
| 12-Feb-09 | CORPORATE OFFICE PROPERTIES TRUST Files SEC form 8-K, Results of Operations and Financial Condition |
| 11-Feb-09 | CORPORATE OFFICE PROPERTIES TRUST Files SEC form 8-K, Results of Operations and Financial Condition |