COPT Sells $28 Million of Non-Strategic Land

Corporate Office Properties Trust (COPT or the Company)

announces that, in the third quarter of 2014, the Company disposed of 18 acres of non-strategic land in the White Marsh submarket of Greater Baltimore and 217 acres of non-strategic land in Charles County. The Company realized gross proceeds of $28 million and, in the third quarter ending September 30, 2014, will recognize a GAAP gain on sale of approximately $5.5 million. The gain will be included in FFO per share per NAREIT, but excluded in the Company's calculation of FFO per share, as adjusted for comparability. The dispositions represented 37% of COPT's non-strategic land holdings by acreage, the remaining 394 acres of which have a book value of $58 million.