Corporate Office Properties Trust Increases Dividend 5.1% (OFC)

Corporate Office Properties Trust OFC announced today that its Board of Trustees has declared a quarterly dividend of $0.4125 per Common Share of beneficial interest for the third quarter 2010. This represents a 5.1% increase from the previous $0.3925 per share quarterly dividend. The dividend will be paid on October 15, 2010 to shareholders of record on September 30, 2010. The Board of Trustees declared a dividend for the period commencing July 15, 2010 and ending October 14, 2010 of $0.50 per Series G Cumulative Redeemable Preferred Share of beneficial interest of the Company, payable on October 15, 2010 to shareholders of record on September 30, 2010. The Board of Trustees declared a dividend for the period commencing July 15, 2010 and ending October 14, 2010 of $0.4688 per Series H Cumulative Redeemable Preferred Share of beneficial interest of the Company, payable on October 15, 2010 to shareholders of record on September 30, 2010. The Board of Trustees declared a dividend for the period commencing July 15, 2010 and ending October 14, 2010 of $0.4766 per Series J Cumulative Redeemable Preferred Share of beneficial interest of the Company, payable on October 15, 2010 to shareholders of record on September 30, 2010. The Board of Trustees declared a dividend for the period commencing July 15, 2010 and ending October 14, 2010 of $0.70 per Series K Cumulative Redeemable Convertible Preferred Share of beneficial interest of the Company, payable on October 15, 2010 to shareholders of record on September 30, 2010.