COPT Announces Expiration of Tender Offers for Senior Notes due 2023 and 2024, and Delivery of Notices of Redemption for Remaining 2023 and 2024 Senior Notes COLUMBIA, Md.--(BUSINESS WIRE)--Corporate Office Properties Trust (“COPT” or the “Company”) (NYSE: OFC) announced today the expiration of the previously announced cash tender offer by its operating partnership, Corporate Office Properties, L.P. (the “Issuer”), for any and all of the Issuer’s outstanding 3.600% Senior Notes due 2023, CUSIP No. 22003B AG1, fully and unconditionally guaranteed by COPT (the “2023 Notes”), on the terms and subject to the conditions set forth in the 2023 Offer to Pur