Corporate Office Properties, L.P.

 Offer to Purchase for Cash
Any and All of its Outstanding
3.600% Senior Notes Due 2023
and
5.250% Senior Notes Due 2024
Fully and Unconditionally Guaranteed by Corporate Office Properties Trust

Title of Security

CUSIP Number

Principal Amount Outstanding


3.600% Senior Notes due 2023


22003BAG1


$350,000,000


5.250% Senior Notes due 2024


22003B AH9


$250,000,000

To view copies of the Tender Offer documents for 3.600% Senior Notes Due 2023 please click on the links below

Offer to Purchase

Notice of Guaranteed Delivery


To view copies of the Tender Offer documents for 5.250% Senior Notes Due 2024 please click on the links below

Offer to Purchase

Notice of Guaranteed Delivery


The Information Agent and Tender Agent for the Offer is:

D.F. King & Co., Inc.

48 Wall Street, 22nd Floor
New York, New York 10005
Attention: Michael Horthman
Banks and Brokers call: (212) 269-5550
All others call Toll-Free: (866) 530-8635
Email: ofc@dfking.com

By Facsimile Transmission (for eligible institutions only):
(212) 709-3328

Any questions or requests for assistance may be directed to the Information Agent and Tender Agent or the Dealer Manager at their respective telephone numbers as set forth above and below, respectively. Any requests for additional copies of this Offer to Purchase, the Notice of Guaranteed Delivery or related documents may be directed to the Information Agent and Tender Agent. A Holder may also contact such holder’s Custodian for assistance concerning the Tender Offers.

The Dealer Manager for the Tender Offer is:

Wells Fargo Securities

550 South Tryon Street, 5th Floor
Charlotte, North Carolina 28202
Attention: Liability Management Group
U.S. Toll Free: (866) 309-6316
Collect: (704) 410-4759
Email: liabilitymanagement@wellsfargo.com