Common use of Limited Liability Companies Clause in Contracts

Limited Liability Companies. ASI, LLC Maryland Aerotech Manager, LLC Maryland Airport Square, LLC Maryland Airport Square II, LLC Maryland Airport Square IV, LLC Maryland Airport Square V, LLC Maryland Airport Square X, LLC Maryland Airport Square XI, LLC Maryland Airport Square XIII, LLC Maryland Airport Square XIV, LLC Maryland Airport Square XV, LLC Maryland Airport Square XIX, LLC Maryland Airport Square XX, LLC Maryland Airport Square XXI, LLC Maryland Airport Square XXII, LLC Maryland Airport Square Holdings I, LLC Delaware Maryland Airport Square Holdings VI and VII, LLC Delaware Maryland Airport Square Partners, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification Airport Square Storms, LLC Maryland AP#5 Lot A, LLC Maryland AP#5 Lot B, LLC Maryland AP#5 Lot C, LLC Maryland Arundel Preserve #5, LLC Maryland Atrium Building, LLC Maryland Canton Crossing Retail, LLC Maryland Clarks Hundred, LLC Maryland Clarks Hundred II, LLC Maryland Colorado Land Acquisition, LLC Colorado Columbia Equity Finance, LLC Maryland Columbia Gateway S-28, L.L.C. Maryland Commons Office Research, LLC Maryland COMI Investments, LLC Maryland Commons Office 6-B, LLC Maryland Concourse 1304, LLC Maryland COPT Academy Ridge, LLC Colorado COPT Aberdeen, LLC Maryland COPT Aerotech, LLC Colorado COPT AP 9, LLC Maryland COPT Arundel Preserve, LLC Maryland COPT Baltimore County I, LLC Maryland COPT Baltimore County II, LLC Maryland COPT Bridge Street Office, LLC Alabama COPT CC 1600, LLC Maryland COPT CC Bulkhead, LLC Maryland COPT CCW I, LLC Maryland COPT CCW II, LLC Maryland COPT CCW III, LLC Maryland COPT CC D1, LLC Maryland COPT CC Holding, LLC Maryland COPT CC Parking, LLC Maryland COPT CC Tower, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification COPT Chantilly, LLC Xxxxxxxx XXXX Chantilly II, LLC Xxxxxxxx XXXX Chantilly I Manager, LLC Maryland COPT Chantilly II Manager, LLC Maryland COPT Colgate General, LLC Delaware Maryland COPT Concourse, LLC Delaware Maryland COPT Connect, LLC Xxxxxxxx XXXX Cresterra 3535, LLC Colorado COPT Cresterra Master, LLC Colorado COPT Dahlgren, LLC Xxxxxxxx XXXX Dahlgren I, LLC Xxxxxxxx XXXX Dahlgren II, LLC Xxxxxxxx XXXX Dahlgren IV, LLC Xxxxxxxx XXXX Dahlgren Land, LLC Xxxxxxxx XXXX Data Management, LLC Maryland COPT DC-6, LLC Delaware Xxxxxxxx XXXX DC-8, LLC Xxxxxxxx XXXX DC-11, LLC Xxxxxxxx XXXX DC-12, LLC Xxxxxxxx XXXX Development & Construction Services, LLC Maryland PA, VA, TX, AL, DC COPT Fairview, LLC Xxxxxxxx XXXX Xxxxxxxxx, LLC Maryland COPT Gate 63, LLC Maryland COPT Gate 6700-6708-6724, LLC Maryland COPT Gateway Commerce, LLC Delaware Maryland COPT General, LLC Maryland COPT Greens I, LLC Xxxxxxxx XXXX Greens II, LLC Xxxxxxxx XXXX Greens III, LLC Xxxxxxxx XXXX Harbour’s Edge, LLC Maryland COPT Harrisburg GP, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification COPT Huntsville, LLC Maryland COPT Interquest, LLC Colorado COPT Interquest III, LLC Colorado COPT Interquest IV, LLC Colorado COPT Interquest Epic I, LLC Colorado COPT Interquest Hybrid I, LLC Colorado COPT Interquest Hybrid II, LLC Colorado COPT-Xxxx XX#5, LLC Maryland COPT Maritime I & II, LLC Delaware DC COPT XxXxxxxx, LLC Xxxxxxxx XXXX Metro Place II, LLC Xxxxxxxx XXXX Newport, LLC Colorado COPT Newport C, LLC Colorado COPT Newport D, LLC Colorado COPT Northcreek, LLC Colorado COPT Northgate A, LLC Maryland COPT Northgate B, LLC Maryland COPT Northgate C, LLC Maryland COPT Northgate D, LLC Maryland COPT Northgate H, LLC Maryland COPT Northgate I, LLC Maryland COPT Opportunity Invest I, LLC Maryland COPT Powerhouse, LLC Maryland COPT Park Meadow, LLC Xxxxxxxx XXXX Parkstone, LLC Xxxxxxxx XXXX Patriot Park I, LLC Colorado COPT Patriot Park II, LLC Colorado COPT Patriot Park V, LLC Colorado COPT Patriot Park VI, LLC Colorado COPT Patriot Park VII, LLC Colorado COPT Patriot Park at Galley, LLC Colorado COPT Pres Investment, LLC Maryland COPT Property Management Services, LLC Maryland DC, VA, DE, Name Jurisdiction of Incorporation/Formation Foreign Qualification PA, TX, AL COPT Renovation, LLC Maryland COPT Richmond I, LLC Xxxxxxxx XXXX Ridgeview I, LLC Xxxxxxxx XXXX Ridgeview II & III, LLC Xxxxxxxx XXXX Riverwood, LLC Maryland COPT San Antonio General, LLC Texas COPT Southwest VA, LLC Xxxxxxxx XXXX Sunrise, LLC Xxxxxxxx XXXX Stonecroft, LLC Xxxxxxxx XXXX T-11, LLC Maryland COPT Virtru, LLC Maryland COPT Waterview I, LLC Xxxxxxxx XXXX Waterview III, LLC Xxxxxxxx XXXX Westbranch, LLC Virginia Cornucopia Holdings, LLC Maryland Cornucopia Holdings II, LLC Maryland Corporate Center I, LLC Maryland Corporate Development Services, LLC Maryland VA Corporate Gatespring, LLC Maryland Corporate Gatespring II, LLC Maryland Corporate Office Services, LLC Maryland Corporate Paragon, LLC Maryland Corporate Place B Equity Affiliates, LLC Maryland Corporate Property, LLC Maryland Crown Point, L.L.C. Delaware Maryland Delaware Airport III, LLC Delaware Maryland Delaware Airport VIII, LLC Delaware Maryland Delaware Airport IX, LLC Delaware Maryland Enterprise Campus Developer, LLC Maryland Fifth Exploration, L.L.C. Maryland Fourth Exploration, L.L.C. Maryland Gateway Crossing 95, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification Gateway 44, LLC Maryland Gateway 67, LLC Maryland Gateway 70, LLC Maryland Gateway 70 Holdings, LLC Maryland Great Xxxxx I, L.L.C. Delaware Great Xxxxx II, L.L.C. Delaware Great Xxxxx III, L.L.C. Delaware Great Xxxxx IV, L.L.C. Delaware Maryland Great Xxxxx V, L.L.C. Delaware Maryland Harrisburg Investors II, LLC Delaware Harrisburg Investors III, LLC Delaware Honeyland 108, LLC Maryland Huntsville Holdings, LLC Maryland Jolly COPT I, LLC Maryland Jolly COPT II, LLC Maryland XX Xxxxxxxx Company, LLC Delaware AL Maritime Holdings, LLC Maryland M Square Associates, LLC Maryland M Square NOAA, LLC Maryland M Square 5825, LLC Maryland M Square 5850, LLC Maryland MOR Forbes, LLC Maryland MOR Forbes 2, LLC Maryland NBP One, LLC Maryland NBP Xxxx & Puff, LLC Maryland NBP Lot 3-A, LLC Maryland NBP Retail, LLC Maryland NBP 131, LLC Maryland NBP 132, LLC Maryland NBP 133, LLC Maryland NBP 134, LLC Maryland NBP 135, LLC Maryland NBP 140, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification NBP 141, LLC Maryland NBP 191, LLC Maryland NBP 201, LLC Maryland NBP 201 Holdings, LLC Maryland NBP 211, LLC Maryland NBP 211 Holdings, LLC Maryland NBP 220, LLC Maryland NBP 220 Holdings, LLC Maryland NBP 221, LLC Maryland NBP 300, LLC Maryland NBP 302, LLC Maryland NBP 304, LLC Maryland NBP 306, LLC Maryland NBP 308, LLC Maryland NBP 310, LLC Maryland NBP 312, LLC Maryland NBP 314, LLC Maryland NBP 316, LLC Maryland NBP 318, LLC Maryland NBP 320, LLC Maryland NBP 322, LLC Maryland NBP 324, LLC Maryland NBP 410, LLC Maryland NBP 420, LLC Maryland NBP 430, LLC Maryland NBP 520, LLC Maryland NBP 540, LLC Maryland Northcreek Manager, LLC Maryland One Xxxxxxx Road, LLC Maryland Park Circle Equities, LLC Maryland Patriot Park, L.L.C. Colorado Patriot Ridge I, LLC Virginia Patriot Ridge II, LLC Virginia Name Jurisdiction of Incorporation/Formation Foreign Qualification Patriot Ridge Commons, LLC Virginia Patriot Ridge Holdings, LLC Virginia Patriot Ridge 7770, LLC Virigina Pecan Court L.L.C. Maryland Powerloft Holdings, LLC Delaware Red Cedar Building, LLC Maryland Redstone Gateway 1000, LLC Delaware XX Xxxxxxxx Gateway 1100, LLC Delaware XX Xxxxxxxx Gateway 1200, LLC Delaware XX Xxxxxxxx Gateway 2100, LLC Delaware XX Xxxxxxxx Gateway 6500, LLC Delaware XX Xxxxxxxx Gateway 7200, LLC Delaware AL RIVA Trustee, LLC Maryland Riverwood Business Center Equity Affiliates, LLC Maryland Tech Park I, LLC Maryland Tech Park II, LLC Maryland Tech Park IV, LLC Maryland Third Exploration L.L.C. Maryland TRC Pinnacle Towers, L.L.C. Xxxxxxxx Xxxxx Ridge I, LLC Maryland White Xxxxx Business Center, LLC Maryland WMBC 13A Investment Company, LLC Maryland 67 Financing LLC Maryland 110 Xxxxxx Xxxxxxx, LLC Maryland 131 Parkway, LLC Maryland 133 Parkway, LLC Maryland 134, LLC Maryland 135 Parkway, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification 141 Parkway, LLC Maryland 250 Charm City, LLC Maryland 302 Sentinel, LLC Maryland 304 Sentinel, LLC Maryland 306 Sentinel, LLC Maryland 318 Sentinel, LLC Maryland 320 Sentinel, LLC Maryland 322 Sentinel, LLC Maryland 800 International, LLC Maryland 849 International, LLC Maryland 000 Xxxxxxxx Xxxxxxx, LLC Maryland 900 International, LLC Maryland 930 International, LLC Maryland 999 Corporate, LLC Maryland 1099 Winterson, LLC Maryland 1190 Winterson, LLC Maryland 1199 Winterson, LLC Maryland 1362 Mellon, LLC Maryland 0000 Xxxxxx Xxxx, LLC Maryland 1550 Nursery, LLC Maryland 2691 Technology, LLC Maryland 2701 Technology, LLC Maryland 2711 Technology, LLC Maryland 2720 Technology, LLC Maryland 2730 Hercules, LLC Maryland 5825 URC Borrower, LLC Maryland 5850 URC Borrower, LLC Maryland 6700 Xxxxxxxxx Xxxx, LLC Maryland 6711 Gateway, LLC Maryland 6711 Gateway Funding, LLC Maryland 6721 Gateway, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification 6721 CGD, LLC Maryland 6731 CG, LLC Maryland 6741 Gateway, LLC Maryland 6940 CGD, LLC Maryland 6950 CG, LLC Xxxxxxxx 0000 CG, LLC Xxxxxxxx 0000 Honeys, LLC Maryland 0000 Xxxxxxxx Xxxxxxx, LLC Maryland 7015 Xxxxxx Xxxxxxxx Drive, L.L.C. Maryland 0000 Xxxxxxxx Xxxxxxx, XXX Xxxxxxxx 0000-00 Riverwood, LLC Maryland 7200 Riverwood, LLC Maryland 7205 Riverwood, LLC Maryland 0000 Xxxxxxx Xxxxx Enterprises, LLC Maryland 0000 Xxxxxxx Xxxxx Enterprises, LLC Maryland 0000 Xxxxxxx Xxxxx Enterprises, LLC Maryland 7320 PD, LLC Maryland 7740 Milestone, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx, LLC Maryland 8621 RFD, LLC Maryland 8661 RFD, LLC Maryland 0000 Xxxxxxx Xxxx, LLC Maryland 9965 Federal Drive, LLC Colorado Name Jurisdiction of Incorporation/Formation Foreign Qualification 45310 Abell House, LLC Maryland Associations for which a Subsidiary of the Company is “Developer” White Xxxxx Business Community Owners’ Association II, Inc. Maryland White Xxxxx Community Owners’ Association, Inc. Maryland SCHEDULE II SIGNIFICANT SUBSIDIARIES - MLB OPINION Corporate Development Services, LLC Corporate Office Management, Inc. Corporate Office Properties, L.P. COPT Property Management Services, LLC SCHEDULE III SIGNIFICANT SUBSIDIARIES — GENERAL COUNSEL OPINION Airport Square II, LLC Blue Xxxx Investment Company, L.P. Corporate Gatespring, LLC NBP One, LLC NBP 131, LLC NBP 135, LLC 7200 Riverwood, LLC SCHEDULE IV

Limited Liability Companies. ASI, LLC Maryland Aerotech Manager, LLC Maryland Airport Square, LLC Maryland Airport Square II, LLC Maryland Airport Square IV, LLC Maryland Airport Square V, LLC Maryland Airport Square X, LLC Maryland Airport Square XI, LLC Maryland Airport Square XIII, LLC Maryland Airport Square XIV, LLC Maryland Airport Square XV, LLC Maryland Airport Square XIX, LLC Maryland Airport Square XX, LLC Maryland Airport Square XXI, LLC Maryland Airport Square XXII, LLC Maryland Airport Square Holdings I, LLC Delaware Maryland MD Airport Square Holdings VI and VII, LLC Delaware Maryland MD Airport Square Partners, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification Airport Square Storms, LLC Maryland AP#5 Lot A, LLC Maryland AP#5 Lot B, LLC Maryland AP#5 Lot C, LLC Maryland Arundel Preserve #5, LLC Maryland Atrium BuildingBeaumeade LC Phase III, LLC Maryland Canton Crossing RetailXxxxxxxx X. Texas SG, LLC Maryland Texas Clarks Hundred, LLC Maryland Clarks Hundred II, LLC Maryland Colorado Land Acquisition, LLC Colorado Columbia Equity Finance, LLC Maryland Columbia Gateway S-28, L.L.C. Maryland COMI Investments, LLC Maryland VA Commons Office Research, LLC Maryland COMI Investments, LLC Maryland Commons Office 6-B, LLC Maryland Concourse 1304, LLC Maryland COPT Academy Ridge, LLC Colorado COPT Aberdeen, LLC Maryland COPT Aerotech, LLC Colorado COPT AP 9, LLC Maryland COPT Arundel Preserve, LLC Maryland COPT Baltimore County I, LLC Maryland COPT Baltimore County II, LLC Maryland COPT Bridge Street Office, LLC Alabama COPT Brock Bridge, LLC Maryland COPT CC 1600, LLC Maryland COPT CC Bulkhead, LLC Maryland COPT CCW I, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification COPT CCW II, LLC Maryland COPT CCW III, LLC Maryland COPT CC D1, LLC Maryland COPT CC Holding, LLC Maryland COPT CC Parking, LLC Maryland COPT CC Tower, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification COPT Chantilly, LLC Xxxxxxxx XXXX Chantilly II, LLC Xxxxxxxx XXXX Chantilly I Manager, LLC Maryland COPT Chantilly II Manager, LLC Maryland COPT Colgate General, LLC Delaware Maryland COPT Concourse, LLC Delaware Maryland MD COPT Connect, LLC Xxxxxxxx XXXX Cresterra 3535, LLC Colorado COPT Cresterra Master, LLC Colorado COPT DahlgrenXxxxxxxx, LLC Xxxxxxxx XXXX Dahlgren I, LLC Xxxxxxxx XXXX Dahlgren II, LLC Xxxxxxxx XXXX Dahlgren IV, LLC Xxxxxxxx XXXX Dahlgren Land, LLC Xxxxxxxx XXXX Data Management, LLC Maryland COPT DC Innovation, LLC Xxxxxxxx XXXX DC Partner, LLC Xxxxxxxx XXXX DC-6, LLC Delaware Xxxxxxxx XXXX DC-8VA COPT DC-15, LLC Xxxxxxxx XXXX DC-11DC-19, LLC (f/k/a COPT DC-18, LLC) Xxxxxxxx XXXX DC-12DC-21, LLC Xxxxxxxx XXXX Development & Construction Services, LLC Maryland PA, VA, TX, AL, DC COPT Fairview, LLC Xxxxxxxx XXXX Xxxxxxxxx, LLC Maryland COPT Gate 63, LLC Maryland COPT Gate 6700-6708-6724, LLC Maryland COPT Gateway Commerce, LLC Delaware Maryland COPT General, LLC Maryland COPT Greens I, LLC Xxxxxxxx XXXX Greens II, LLC Xxxxxxxx XXXX Greens III, LLC Xxxxxxxx XXXX Harbour’s Edge, LLC Maryland COPT Harrisburg GP, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification COPT Huntsville, LLC Maryland COPT Interquest, LLC Colorado COPT Interquest III, LLC Colorado COPT Interquest IV, LLC Colorado COPT Interquest Epic I, LLC Colorado COPT Interquest Hybrid I, LLC Colorado COPT Interquest Hybrid II, LLC Colorado COPT-Xxxx XX#5, LLC Maryland COPT Maritime I & II, LLC Delaware DC COPT XxXxxxxx, LLC Xxxxxxxx XXXX Virginia Name Jurisdiction of Incorporation/Formation Foreign Qualification COPT Metro Place II, LLC Xxxxxxxx XXXX Newport, LLC Colorado COPT Newport C, LLC Colorado COPT Newport D, LLC Colorado COPT Northcreek, LLC Colorado COPT Northgate A, LLC Maryland COPT Northgate B, LLC Maryland COPT Northgate C, LLC Maryland COPT Northgate D, LLC Maryland COPT Northgate H, LLC Maryland COPT Northgate I, LLC Maryland COPT Opportunity Invest I, LLC Maryland COPT Powerhouse, LLC Maryland COPT Park Meadow, LLC Xxxxxxxx XXXX Parkstone, LLC Xxxxxxxx XXXX Patriot Park I, LLC Colorado COPT Patriot Park II, LLC Colorado COPT Patriot Park V, LLC Colorado COPT Patriot Park VI, LLC Colorado COPT Patriot Park VII, LLC Colorado COPT Patriot Park at Galley, LLC Colorado COPT Pres Investment, LLC Maryland COPT Property Management Services, LLC Maryland DC, VA, DE, Name Jurisdiction of Incorporation/Formation Foreign Qualification PA, TX, AL COPT Renovation, LLC Maryland COPT Richmond I, LLC Xxxxxxxx XXXX Ridgeview I, LLC Xxxxxxxx XXXX Ridgeview II & III, LLC Xxxxxxxx XXXX Riverwood, LLC Maryland COPT San Antonio General, LLC Texas COPT Southwest VA, LLC Xxxxxxxx XXXX Xxxxxxx Place, LLC Delaware COPT Sunrise, LLC Xxxxxxxx XXXX Stonecroft, LLC Xxxxxxxx XXXX T-11, LLC Maryland COPT Virtru, LLC Maryland COPT Waterview I, LLC Xxxxxxxx XXXX Waterview III, LLC Xxxxxxxx XXXX Westbranch, LLC Virginia Cornucopia Holdings, LLC Maryland Cornucopia Holdings II, LLC Maryland Corporate Center I, LLC Maryland Corporate Development Services, LLC Maryland VA Corporate Gatespring, LLC Maryland Corporate Gatespring II, LLC Maryland Corporate Office Services, LLC Maryland Corporate ParagonDC-8-9-10, LLC Maryland Corporate Place B Equity Affiliates(f/k/a COPT DC-8, LLC Maryland Corporate Property, LLC Maryland Crown Point, L.L.C. Delaware Maryland Delaware Airport IIILLC) Virginia DC-8-9-10 DE, LLC Delaware Maryland VA DC-11, LLC (f/k/a COPT DC-11, LLC) Virginia DC-11, DE, LLC Delaware VA DC-12-14, LLC (f/k/a COPT DC-12, LLC) Virginia Name Jurisdiction of Incorporation/Formation Foreign Qualification DC-12-14 DE, LLC Delaware VA Delaware Airport VIII, LLC Delaware Maryland MD Delaware Airport IX, LLC Delaware Maryland MD Enterprise Campus Developer, LLC Maryland Fifth Exploration, L.L.C. Maryland Fourth Exploration, L.L.C. Maryland Gateway Crossing 95, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification Gateway 44, LLC Maryland Gateway 67, LLC Maryland Gateway 70, LLC Maryland Gateway 70 Holdings, GI-COPT DC Partnership LLC Maryland (JV entity) Delaware Great Xxxxx I, L.L.C. Delaware Great Xxxxx II, L.L.C. Delaware Great Xxxxx III, L.L.C. Delaware Great Xxxxx IV, L.L.C. Delaware Maryland MD Great Xxxxx V, L.L.C. Delaware Maryland Harrisburg Investors II, LLC Delaware Harrisburg Investors III, LLC Delaware MD Honeyland 108, LLC Maryland Huntsville Holdings, LLC Maryland Jolly COPT I, LLC Maryland Jolly COPT II, LLC Maryland XX Xxxxxxxx Company, LLC (JV) Delaware AL Maries Tech Park, LLC Virginia Maritime Holdings, LLC Maryland M Square Associates, LLC (JV) Maryland M Square NOAAPark, LLC Maryland M Square 5825, LLC (JV) Maryland M Square 5850, LLC Maryland M Square 5801, LLC (JV) Maryland MOR Forbes, LLC Maryland MOR Forbes 2, LLC Maryland NBP One, LLC Maryland NBP Xxxx & Puff, LLC Maryland NBP Lot 3-A, LLC Maryland NBP Retail, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification NBP 131, LLC Maryland NBP 132, LLC Maryland NBP 133, LLC Maryland NBP 134, LLC Maryland NBP 135, LLC Maryland NBP 140, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification NBP 141, LLC Maryland NBP 191, LLC Maryland NBP 201, LLC Maryland NBP 201 Holdings, LLC Maryland NBP 211, LLC Maryland NBP 211 Holdings, LLC Maryland NBP 220, LLC Maryland NBP 220 Holdings, LLC Maryland NBP 221, LLC Maryland NBP 300, LLC Maryland NBP 300 Restaurant, LLC (entity to be JV partner) Maryland NBP 302, LLC Maryland NBP 304, LLC Maryland NBP 306, LLC Maryland NBP 308, LLC Maryland NBP 310, LLC Maryland NBP 312, LLC Maryland NBP 314, LLC Maryland NBP 316, LLC Maryland NBP 318, LLC Maryland NBP 320, LLC Maryland NBP 322, LLC Maryland NBP 324, LLC Maryland NBP 410, LLC Maryland NBP 420, LLC Maryland NBP 430, LLC Maryland NBP 520, LLC Maryland NBP 540, LLC Maryland Northcreek Manager, LLC Maryland One Xxxxxxx Road, LLC Maryland Park Circle Equities, LLC Maryland Patriot Park, L.L.C. Colorado Name Jurisdiction of Incorporation/Formation Foreign Qualification Patriot Ridge I, LLC Virginia Patriot Ridge II, LLC Virginia Name Jurisdiction of Incorporation/Formation Foreign Qualification Patriot Ridge Commons, LLC Virginia Patriot Ridge Holdings, LLC Virginia Patriot Ridge 7770, LLC Virigina Virginia Pecan Court L.L.C. Maryland Powerloft Holdings, LLC Delaware Red Cedar Building, LLC Maryland Redstone Gateway 1000, LLC Delaware XX Xxxxxxxx Gateway 1100, LLC Delaware XX Xxxxxxxx Gateway 1200, LLC Delaware XX Xxxxxxxx Gateway 2100, LLC Delaware XX Xxxxxxxx Gateway 4100, LLC Delaware Redstone Gateway 6500, LLC Delaware XX Xxxxxxxx Gateway 7100, LLC Delaware XX Xxxxxxxx Gateway 7200, LLC (entity to be JV partner) Delaware AL RG 2100 Restaurant, LLC Maryland AL RIVA Trustee, LLC Maryland Riverwood Business Center Equity Affiliates, LLC Maryland Tech Park IXxxxxxx Investors, LLC Maryland Tech Park II(JV entity) Delaware Xxxxxxx School Holdings, LLC Maryland Tech Park IV, LLC Maryland Delaware DC Third Exploration L.L.C. Maryland TRC Pinnacle Towers, L.L.C. Xxxxxxxx Xxxxx Ridge Virginia Waterside I, LLC Maryland White Xxxxx Business CenterVirginia 30 Charm City, LLC Maryland WMBC 13A Investment Company30 LS Borrower, LLC Maryland 67 Financing LLC Maryland 110 Xxxxxx Xxxxxxx100 Charm City, LLC Maryland 131 Parkway, LLC Maryland 133 Parkway, LLC Maryland 134, LLC Maryland 135 Parkway, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification 141 Parkway100 LS Borrower, LLC Maryland 250 Charm City, LLC Maryland 302 Sentinel, LLC Maryland 304 Sentinel, LLC Maryland 306 Sentinel, LLC Maryland 318 Sentinel, LLC Maryland 320 Sentinel, LLC Maryland 322 Sentinel, LLC Maryland 800 International, LLC Maryland 849 International, LLC Maryland 000 Xxxxxxxx Xxxxxxx, LLC Maryland 900 International, LLC Maryland 930 International, LLC Maryland 999 Corporate, LLC Maryland 1099 Winterson, LLC Maryland 1190 Winterson, LLC Maryland 1199 Winterson, LLC Maryland 1362 Mellon, LLC Maryland 0000 1460 Xxxxxx XxxxRoad, LLC Maryland 1550 Nursery, LLC Maryland 2691 Technology2100 L Holdings, LLC Maryland 2701 Technology, LLC Maryland 2711 Technology, LLC Maryland 2720 Technology, LLC Maryland 2730 Hercules, LLC Maryland 5825 URC Borrower, LLC Maryland 5850 URC Borrower, LLC Maryland 6700 Xxxxxxxxx Xxxx, LLC Maryland (JV entity) Delaware DC 6711 Gateway, LLC Maryland 6711 Gateway Funding, LLC Maryland 6721 Gateway, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification 6721 CGDGateway, LLC Maryland 6731 CGGateway, LLC Maryland 6741 Gateway, LLC Maryland 6940 CGD, LLC Maryland 6950 CG, LLC Xxxxxxxx 0000 CG, LLC Xxxxxxxx 0000 7000 Honeys, LLC Maryland 0000 Xxxxxxxx Xxxxxxx, LLC Maryland 7015 Xxxxxx Xxxxxxxx DriveXxxxx, L.L.C. Maryland X.X.X. Xxxxxxxx 0000 Xxxxxxxx Xxxxxxx, XXX Xxxxxxxx 0000-00 Riverwood, LLC Maryland 7200 Riverwood, LLC Maryland 7205 Riverwood, LLC Maryland 0000 Xxxxxxx Xxxxx Enterprises, LLC Maryland 0000 Xxxxxxx Xxxxx Enterprises, LLC Maryland 0000 Xxxxxxx Xxxxx Enterprises, LLC Maryland 7320 PD, LLC Maryland 7740 Milestone, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx, LLC Maryland 8621 RFD, LLC Maryland 8661 RFD, LLC Maryland 0000 Xxxxxxx Xxxx, LLC Maryland 9965 Federal Drive, LLC Colorado Name Jurisdiction of Incorporation/Formation Foreign Qualification 45310 XXX Xxxxxxxx 00000 Abell House, LLC Maryland Associations for which a Subsidiary of the Company is “Developer” White Xxxxx Business Community Owners’ Association II, Inc. Maryland White Xxxxx Community Owners’ Association, Inc. Maryland SCHEDULE II SIGNIFICANT SUBSIDIARIES - MLB OPINION Corporate Development Services, LLC Corporate Office Management, Inc. Corporate Office Properties, L.P. COPT Property Management Services, LLC SCHEDULE III SIGNIFICANT SUBSIDIARIES — GENERAL COUNSEL XXXX XXXXX XXXXXXXX & XXXX LLP OPINION Airport Square IICorporate Office Management, Inc. Corporate Development Services, LLC Blue Xxxx Investment Company, L.P. Corporate Gatespring, LLC NBP One, LLC NBP 131, LLC NBP 135, LLC 7200 Riverwood, LLC SCHEDULE IVIV MATERIAL DOCUMENTS Second Amended and Restated Limited Partnership Agreement of the Operating Partnership, dated December 7, 1999 (filed with the Company’s Annual Report on Form 10-K on March 16, 2000). Second Amendment to Second Amended and Restated Limited Partnership Agreement of the Operating Partnership, dated December 21, 1999 (filed with the Company’s Post Effective Amendment No. 2 to Form S-3, dated November 1, 2000 (Registration Statement No. 333-71807)). Third Amendment to Second Amended and Restated Limited Partnership Agreement of the Operating Partnership, dated September 29, 2000 (filed with the Company’s Post Effective Amendment No. 2 to Form S-3, dated November 1, 2000 (Registration Statement No. 333-71807)). Fourth Amendment to Second Amended and Restated Limited Partnership Agreement of the Operating Partnership, dated November 27, 2000 (filed with the Company’s Annual Report on Form 10-K on March 27, 2003). Fifth Amendment to Second Amended and Restated Limited Partnership Agreement of the Operating Partnership, dated January 25, 2001 (filed with the Company’s Annual Report on Form 10-K on March 27, 2003).

Limited Liability Companies. ASI, LLC Maryland Aerotech Manager, LLC Maryland Airport Square, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification Airport Square II, LLC Maryland Airport Square IV, LLC Maryland Airport Square V, LLC Maryland Airport Square X, LLC Maryland Airport Square XI, LLC Maryland Airport Square XIII, LLC Maryland Airport Square XIV, LLC Maryland Airport Square XV, LLC Maryland Airport Square XIX, LLC Maryland Airport Square XX, LLC Maryland Airport Square XXI, LLC Maryland Airport Square XXII, LLC Maryland Airport Square Holdings I, LLC Delaware Maryland Airport Square Holdings VI and VII, LLC Delaware Maryland Airport Square Partners, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification Airport Square Storms, LLC Maryland AP#5 Lot A, LLC Maryland AP#5 Lot B, LLC Maryland AP#5 Lot CAmbassador Center, LLC Maryland Arundel Preserve #5, LLC Maryland Atrium Building, LLC Maryland Canton Crossing Retail, LLC Maryland Clarks Hundred, LLC Maryland Clarks Hundred II, LLC Maryland Colorado Land Acquisition, LLC Colorado Columbia Equity Finance, LLC Maryland Columbia Gateway S-28, L.L.C. Maryland Commons Office Research, LLC Maryland COMI Investments, LLC Maryland Commons Office 6-B, LLC Maryland Concourse 1304, LLC Maryland COPT Academy Ridge, LLC Colorado COPT Aberdeen, LLC Maryland COPT Aerotech, LLC Colorado COPT AP 9, LLC Maryland COPT Arundel Preserve, LLC Maryland COPT Baltimore County I, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification COPT Baltimore County II, LLC Maryland COPT Bridge Street Office, LLC Alabama COPT CC 1600, LLC Maryland COPT CC Bulkhead, LLC Maryland COPT CCW I, LLC Maryland COPT CCW II, LLC Maryland COPT CCW III, LLC Maryland COPT CC D1, LLC Maryland COPT CC Holding, LLC Maryland COPT CC Parking, LLC Maryland COPT CC Tower, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification COPT Chantilly, LLC Xxxxxxxx XXXX Chantilly II, LLC Xxxxxxxx XXXX Chantilly I Manager, LLC Maryland COPT Chantilly II Manager, LLC Maryland COPT Colgate General, LLC Delaware Maryland COPT Concourse, LLC Delaware Maryland COPT Connect, LLC Xxxxxxxx XXXX Cresterra 3535, LLC Colorado COPT Cresterra Master, LLC Colorado COPT Dahlgren, LLC Xxxxxxxx XXXX Dahlgren Xxxxxxxx I, LLC Xxxxxxxx XXXX Dahlgren II, LLC Xxxxxxxx XXXX Dahlgren IV, LLC Xxxxxxxx XXXX Dahlgren Land, LLC Xxxxxxxx XXXX Data Management, LLC Maryland COPT DC-6, LLC Delaware Xxxxxxxx XXXX DC-8, LLC Xxxxxxxx XXXX DC-11, LLC Xxxxxxxx XXXX DC-12, LLC Xxxxxxxx XXXX Development & Construction Services, LLC Maryland PA, VA, TX, AL, DC COPT Fairview, LLC Xxxxxxxx XXXX-FD Indian Head, LLC Maryland XXXX Xxxxxxxxx, LLC Maryland COPT Gate 63, LLC Maryland COPT Gate 6700-6708-6724, LLC Maryland COPT Gateway Commerce, LLC Delaware Maryland COPT General, LLC Maryland COPT Greens I, LLC Xxxxxxxx XXXX Virginia Name Jurisdiction of Incorporation/Formation Foreign Qualification COPT Greens II, LLC Xxxxxxxx XXXX Greens III, LLC Xxxxxxxx XXXX Harbour’s Edge, LLC Maryland COPT Harrisburg GP, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification COPT Xxxx Valley GP, LLC Maryland COPT Huntsville, LLC Maryland COPT Indian Head, LLC Maryland COPT Interquest, LLC Colorado COPT Interquest III, LLC Colorado COPT Interquest IV, LLC Colorado COPT Interquest Epic I, LLC Colorado COPT Interquest Hybrid I, LLC Colorado COPT Interquest Hybrid II, LLC Colorado COPT-Xxxx XX#5, LLC Maryland COPT Maritime I & II, LLC Delaware DC COPT XxXxxxxxMontpelier, LLC Xxxxxxxx XXXX Metro Place II, LLC Xxxxxxxx XXXX Maryland COPT Newport, LLC Colorado COPT Newport C, LLC Colorado COPT Newport D, LLC Colorado COPT Northcreek, LLC Colorado COPT Northgate A, LLC Maryland COPT Northgate B, LLC Maryland COPT Northgate C, LLC Maryland COPT Northgate D, LLC Maryland COPT Northgate H, LLC Maryland COPT Northgate I, LLC Maryland COPT Opportunity Invest I, LLC Maryland COPT Powerhouse, LLC Maryland COPT Park Meadow, LLC Xxxxxxxx XXXX Parkstone, LLC Xxxxxxxx XXXX Patriot Park I, LLC Colorado COPT Patriot Park II, LLC Colorado COPT Patriot Park V, LLC Colorado COPT Patriot Park VI, LLC Colorado Name Jurisdiction of Incorporation/Formation Foreign Qualification COPT Patriot Park VII, LLC Colorado COPT Patriot Park at Galley, LLC Colorado COPT Pres Investment, LLC Maryland COPT Property Management Services, LLC Maryland DC, VA, DE, Name Jurisdiction of Incorporation/Formation Foreign Qualification PA, TX, AL COPT Renovation, LLC Maryland COPT Richmond I, LLC Xxxxxxxx XXXX Ridgeview I, LLC Xxxxxxxx XXXX Ridgeview II & III, LLC Xxxxxxxx XXXX Riverwood, LLC Maryland COPT San Antonio General, LLC Texas COPT Southwest VA, LLC Xxxxxxxx XXXX Sunrise, LLC Xxxxxxxx XXXX Stonecroft, LLC Xxxxxxxx XXXX T-11, LLC Maryland COPT Virtru, LLC Maryland COPT Waterview I, LLC Xxxxxxxx XXXX Waterview III, LLC Xxxxxxxx XXXX Westbranch, LLC Virginia Cornucopia Holdings, LLC Maryland Cornucopia Holdings II, LLC Maryland Corporate Center I, LLC Maryland Corporate Development Services, LLC Maryland VA Corporate Gatespring, LLC Maryland Corporate Gatespring II, LLC Maryland Corporate Office Services, LLC Maryland Corporate Paragon, LLC Maryland Corporate Place B Equity Affiliates, LLC Maryland Corporate Property, LLC Maryland Crown Point, L.L.C. Delaware Maryland Delaware Airport III, LLC Delaware Maryland Delaware Airport VIII, LLC Delaware Maryland Delaware Airport IX, LLC Delaware Maryland Enterprise Campus Developer, LLC Maryland Fifth Exploration, L.L.C. Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification Ft. Xxxxxxx I, LLC Maryland Ft. Xxxxxxx XX, LLC Maryland Ft. Xxxxxxx III, LLC Maryland Ft. Xxxxxxx XX, LLC Maryland Ft. Xxxxxxx Holding, LLC Maryland Fourth Exploration, L.L.C. Maryland Gateway Crossing 95, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification Gateway 44, LLC Maryland Gateway 67, LLC Maryland Gateway 70, LLC Maryland Gateway 70 Holdings, LLC Maryland Governors Court, LLC Maryland Governors Court 21, LLC Maryland Great Xxxxx I, L.L.C. Delaware Great Xxxxx II, L.L.C. Delaware Great Xxxxx III, L.L.C. Delaware Great Xxxxx IV, L.L.C. Delaware Maryland Great Xxxxx V, L.L.C. Delaware Maryland Harrisburg Investors II, LLC Delaware Harrisburg Investors III, LLC Delaware Honeyland 108, LLC Maryland Huntsville Holdings, LLC Maryland Jolly COPT I, LLC Maryland Jolly COPT II, LLC Maryland XX Xxxxxxxx Company, LLC Delaware AL Maritime Holdings, LLC Maryland M Square Associates, LLC Maryland M Square NOAA, LLC Maryland M Square 5825, LLC Maryland M Square 5850, LLC Maryland MOR Forbes, LLC Maryland MOR Forbes 2, LLC Maryland NBP One, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification NBP Xxxx & Puff, LLC Maryland NBP Lot 3-A, LLC Maryland NBP Retail, LLC Maryland NBP 131, LLC Maryland NBP 132, LLC Maryland NBP 133, LLC Maryland NBP 134, LLC Maryland NBP 135, LLC Maryland NBP 140, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification NBP 141, LLC Maryland NBP 191, LLC Maryland NBP 201, LLC Maryland NBP 201 Holdings, LLC Maryland NBP 211, LLC Maryland NBP 211 Holdings, LLC Maryland NBP 220, LLC Maryland NBP 220 Holdings, LLC Maryland NBP 221, LLC Maryland NBP 300, LLC Maryland NBP 302, LLC Maryland NBP 304, LLC Maryland NBP 306, LLC Maryland NBP 308, LLC Maryland NBP 310, LLC Maryland NBP 312, LLC Maryland NBP 314, LLC Maryland NBP 316, LLC Maryland NBP 318, LLC Maryland NBP 320, LLC Maryland NBP 322, LLC Maryland NBP 324, LLC Maryland NBP 410, LLC Maryland NBP 420, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification NBP 430, LLC Maryland NBP 520, LLC Maryland NBP 540, LLC Maryland Northcreek Manager, LLC Maryland One Xxxxxxx RoadNottingham Center, LLC Maryland Opportunity Invest Ventures, LLC Delaware Park Circle Equities, LLC Maryland Patriot Park, L.L.C. Colorado Patriot Ridge I, LLC Virginia Patriot Ridge II, LLC Virginia Name Jurisdiction of Incorporation/Formation Foreign Qualification Patriot Ridge Commons, LLC Virginia Patriot Ridge Holdings, LLC Virginia Patriot Ridge 7770, LLC Virigina Pecan Court L.L.C. Maryland Powerloft @ Innovation I, LLC Delaware VA Powerloft Holdings, LLC Delaware Powerloft Services, LLC Delaware VA Professional Center I, LLC Maryland Professional Center III, LLC Maryland Red Cedar Building, LLC Maryland Redstone Gateway 1000, LLC Delaware XX Xxxxxxxx Gateway 1100, LLC Delaware XX Xxxxxxxx Gateway 1200, LLC Delaware XX Xxxxxxxx Gateway 2100, LLC Delaware XX Xxxxxxxx Gateway 6500, LLC Delaware XX Xxxxxxxx Gateway 7200, LLC Delaware AL RIVA Trustee, LLC Maryland Rivers Center III Investors, LLC Maryland Riverwood Business Center Equity Affiliates, LLC Maryland Rockville Corporate Center, LLC Maryland Xxxxxxxxx 216 Investors, LLC Maryland Xxxxxxxxx Center Equities, LLC Maryland Sterling York, LLC Delaware Maryland Tech Park I, LLC Maryland Tech Park II, LLC Maryland Tech Park IV, LLC Maryland Third Exploration L.L.C. Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification Towerview, LLC Virginia TRC Pinnacle Towers, L.L.C. Xxxxxxxx Xxxxx Ridge I, LLC Maryland White Xxxxx Business Center, LLC Maryland White Xxxxx Professional Center II, LLC Maryland Xxxxx Investors, LLC Maryland WMBC 13A Investment Company, LLC Maryland 67 Financing LLC Maryland 110 Xxxxxx Xxxxxxx, LLC Maryland 131 Parkway, LLC Maryland 132, LLC Maryland 133 Parkway, LLC Maryland 134, LLC Maryland 135 Parkway, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification 141 Parkway, LLC Maryland 250 Charm City221, LLC Maryland 000 Xxxxxxxxx Xxxxxx, LLC Maryland 302 Sentinel, LLC Maryland 304 Sentinel, LLC Maryland 306 Sentinel, LLC Maryland 318 Sentinel, LLC Maryland 320 Sentinel, LLC Maryland 322 Sentinel, LLC Maryland 800 International, LLC Maryland 849 International, LLC Maryland 000 Xxxxxxxx Xxxxxxx, LLC Maryland 900 International, LLC Maryland 930 International, LLC Maryland 999 Corporate, LLC Maryland 1099 Winterson, LLC Maryland 1190 Winterson, LLC Maryland 1199 Winterson, LLC Maryland 1362 Mellon, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification 0000 Xxxxxx Xxxx, LLC Maryland 1550 Nursery, LLC Maryland 2691 Technology, LLC Maryland 2701 Technology, LLC Maryland 2711 Technology, LLC Maryland 2720 Technology, LLC Maryland 2730 Hercules, LLC Maryland 0000 Xxxx Xxxxxxxxx Xxxxx, LLC Maryland 2900 Towerview Road, LLC Virginia 5825 URC Borrower, LLC Maryland 5850 URC Borrower, LLC Maryland 6700 Xxxxxxxxx Xxxx, LLC Maryland 6711 CG, LLC Maryland 6711 Gateway, LLC Maryland 6711 Gateway Funding, LLC Maryland 6721 Gateway, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification 6721 CGD, LLC Maryland 6731 CG, LLC Maryland 6731 Gateway, LLC Maryland 6741 Gateway, LLC Maryland 6940 CGD, LLC Maryland 6950 CG, LLC Xxxxxxxx 0000 CG, LLC Xxxxxxxx 0000 Honeys, LLC Maryland 0000 Xxxxxxxx Xxxxxxx, LLC Maryland 7015 Xxxxxx Xxxxxxxx Drive, L.L.C. Maryland 0000 Xxxxxxxx Xxxxxxx, XXX Xxxxxxxx 0000-00 Riverwood, LLC Maryland 7200 Riverwood, LLC Maryland 7205 Riverwood, LLC Maryland 0000 Xxxxxxxxxx Xxxx, LLC Maryland 0000 Xxxxxxx Xxxxx Enterprises, LLC Maryland 0000 Xxxxxxx Xxxxx Enterprises, LLC Maryland 0000 Xxxxxxx Xxxxx Enterprises, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification 7320 PD, LLC Maryland 0000 Xxxxxxxxxx Xxxx, LLC Maryland 7740 Milestone, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx8029 Corporate, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx8110 Corporate, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx8140 Corporate, LLC Maryland 8621 RFD, LLC Maryland 8661 RFD, LLC Maryland 9020 Xxxxxxxxxx, LLC Maryland 0000 Xxxxxxx Xxxx, LLC Maryland 9965 Federal Drive0000 Xxxxxxx Xxxxx, XXX Xxxxxxxx 00000 XxXxxxxxx Road, LLC Colorado Name Jurisdiction of Incorporation/Formation Foreign Qualification 45310 Maryland 11800 Tech Road LLC Delaware Maryland 00000 Xxxx Xxxxxx Xxxx, XXX Xxxxxxxx 00000 Abell House, LLC Maryland Associations for which a Subsidiary of the Company is “Developer” White Xxxxx Business Community Owners’ Association II, Inc. Maryland White Xxxxx Community Owners’ Association, Inc. Maryland SCHEDULE II SIGNIFICANT SUBSIDIARIES - MLB OPINION Corporate Development ServicesIV MATERIAL DOCUMENTS Second Amended and Restated Limited Partnership Agreement of the Operating Partnership, LLC Corporate Office Managementdated December 7, Inc. Corporate Office Properties1999 (filed with the Company’s Annual Report on Form 10-K on March 16, L.P. COPT Property Management Services2000). Second Amendment to Second Amended and Restated Limited Partnership Agreement of the Operating Partnership, LLC SCHEDULE III SIGNIFICANT SUBSIDIARIES — GENERAL COUNSEL OPINION Airport Square IIdated December 21, LLC Blue Xxxx Investment 1999 (filed with the Company’s Post Effective Amendment No. 2 to Form S-3, L.P. Corporate Gatespringdated November 1, LLC NBP One2000 (Registration Statement No. 333-71807)). Third Amendment to Second Amended and Restated Limited Partnership Agreement of the Operating Partnership, LLC NBP 131dated September 29, LLC NBP 1352000 (filed with the Company’s Post Effective Amendment No. 2 to Form S-3, LLC 7200 Riverwooddated November 1, LLC SCHEDULE IV2000 (Registration Statement No. 333-71807)). Fourth Amendment to Second Amended and Restated Limited Partnership Agreement of the Operating Partnership, dated November 27, 2000 (filed with the Company’s Annual Report on Form 10-K on March 27, 2003). Fifth Amendment to Second Amended and Restated Limited Partnership Agreement of the Operating Partnership, dated January 25, 2001 (filed with the Company’s Annual Report on Form 10-K on March 27, 2003).

Limited Liability Companies. ASI, LLC Maryland Aerotech Manager, LLC Maryland Airport Square, LLC Maryland Airport Square II, LLC Maryland Airport Square IV, LLC Maryland Airport Square V, LLC Maryland Airport Square X, LLC Maryland Airport Square XI, LLC Maryland Airport Square XIII, LLC Maryland Airport Square XIV, LLC Maryland Airport Square XV, LLC Maryland Airport Square XIX, LLC Maryland Airport Square XX, LLC Maryland Airport Square XXI, LLC Maryland Airport Square XXII, LLC Maryland Airport Square Holdings I, LLC Delaware Maryland Airport Square Holdings VI and VII, LLC Delaware Maryland Airport Square Partners, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification Airport Square Storms, LLC Maryland AP#5 Lot A, LLC Maryland AP#5 Lot B, LLC Maryland AP#5 Lot C, LLC Maryland Arundel Preserve #5, LLC Maryland Atrium Building, LLC Maryland Canton Crossing Retail, LLC Maryland Clarks Hundred, LLC Maryland Clarks Hundred II, LLC Maryland Colorado Land Acquisition, LLC Colorado Columbia Equity Finance, LLC Maryland Columbia Gateway S-28, L.L.C. Maryland COMI Investments, LLC Maryland Commons Office Research, LLC Maryland COMI Investments, LLC Maryland Commons Office 6-B, LLC Maryland Concourse 1304, LLC Maryland COPT Academy Ridge, LLC Colorado Name Jurisdiction of Incorporation/Formation Foreign Qualification COPT Aberdeen, LLC Maryland COPT Aerotech, LLC Colorado COPT AP 9, LLC Maryland COPT Arundel Preserve, LLC Maryland COPT Baltimore County I, LLC Maryland COPT Baltimore County II, LLC Maryland COPT Bridge Street Office, LLC Alabama COPT Brock Bridge, LLC Maryland COPT CC 1600, LLC Maryland COPT CC Bulkhead, LLC Maryland COPT CCW I, LLC Maryland COPT CCW II, LLC Maryland COPT CCW III, LLC Maryland COPT CC D1, LLC Maryland COPT CC Holding, LLC Maryland COPT CC Parking, LLC Maryland COPT CC Tower, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification COPT Chantilly, LLC Xxxxxxxx XXXX Chantilly II, LLC Xxxxxxxx XXXX Chantilly I Manager, LLC Maryland COPT Chantilly II Manager, LLC Maryland COPT Colgate General, LLC Delaware Maryland COPT Concourse, LLC Delaware Maryland COPT Connect, LLC Xxxxxxxx XXXX Cresterra 3535, LLC Colorado COPT Cresterra Master, LLC Colorado COPT Dahlgren, LLC Xxxxxxxx XXXX Dahlgren Xxxxxxxx I, LLC Xxxxxxxx XXXX Dahlgren II, LLC Xxxxxxxx XXXX Dahlgren IV, LLC Xxxxxxxx XXXX Dahlgren Land, LLC Xxxxxxxx XXXX Data Management, LLC Maryland COPT DC Innovation, LLC Xxxxxxxx XXXX DC Partner, LLC Xxxxxxxx XXXX DC-6, LLC Delaware Xxxxxxxx XXXX DC-8Virginia Name Jurisdiction of Incorporation/Formation Foreign Qualification COPT DC-15, LLC Xxxxxxxx XXXX DC-11DC-19, LLC Xxxxxxxx XXXX DC-12(f/k/a COPT DC-18, LLC LLC) Xxxxxxxx XXXX Development & Construction Services, LLC Maryland PA, VA, TX, AL, DC COPT Fairview, LLC Xxxxxxxx XXXX Xxxxxxxxx, LLC Maryland COPT Gate 63, LLC Maryland COPT Gate 6700-6708-6724, LLC Maryland COPT Gateway Commerce, LLC Delaware Maryland COPT General, LLC Maryland COPT Greens I, LLC Xxxxxxxx XXXX Greens II, LLC Xxxxxxxx XXXX Greens III, LLC Xxxxxxxx XXXX Harbour’s Edge, LLC Maryland COPT Harrisburg GP, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification COPT Huntsville, LLC Maryland COPT Interquest, LLC Colorado COPT Interquest III, LLC Colorado COPT Interquest IV, LLC Colorado COPT Interquest Epic I, LLC Colorado COPT Interquest Hybrid I, LLC Colorado COPT Interquest Hybrid II, LLC Colorado COPT-Xxxx XX#5, LLC Maryland COPT Maritime I & II, LLC Delaware DC COPT XxXxxxxx, LLC Xxxxxxxx XXXX Metro Place II, LLC Xxxxxxxx XXXX Newport, LLC Colorado COPT Newport C, LLC Colorado COPT Newport D, LLC Colorado COPT Northcreek, LLC Colorado COPT Northgate A, LLC Maryland COPT Northgate B, LLC Maryland COPT Northgate C, LLC Maryland COPT Northgate D, LLC Maryland COPT Northgate H, LLC Maryland COPT Northgate I, LLC Maryland COPT Opportunity Invest I, LLC Maryland COPT Powerhouse, LLC Maryland COPT Park Meadow, LLC Xxxxxxxx XXXX Parkstone, LLC Xxxxxxxx XXXX Patriot Park I, LLC Colorado COPT Patriot Park II, LLC Colorado COPT Patriot Park V, LLC Colorado COPT Patriot Park VI, LLC Colorado COPT Patriot Park VII, LLC Colorado COPT Patriot Park at Galley, LLC Colorado COPT Pres Investment, LLC Maryland COPT Property Management Services, LLC Maryland DC, VA, DE, PA, TX, AL Name Jurisdiction of Incorporation/Formation Foreign Qualification PA, TX, AL COPT Renovation, LLC Maryland COPT Richmond I, LLC Xxxxxxxx XXXX Ridgeview I, LLC Xxxxxxxx XXXX Ridgeview II & III, LLC Xxxxxxxx XXXX Riverwood, LLC Maryland COPT San Antonio General, LLC Texas COPT Southwest VA, LLC Xxxxxxxx XXXX Sunrise, LLC Xxxxxxxx XXXX Stonecroft, LLC Xxxxxxxx XXXX T-11, LLC Maryland COPT Virtru, LLC Maryland COPT Waterview I, LLC Xxxxxxxx XXXX Waterview III, LLC Xxxxxxxx XXXX Westbranch, LLC Virginia Cornucopia Holdings, LLC Maryland Cornucopia Holdings II, LLC Maryland Corporate Center I, LLC Maryland Corporate Development Services, LLC Maryland VA Corporate Gatespring, LLC Maryland Corporate Gatespring II, LLC Maryland Corporate Office Services, LLC Maryland Corporate Paragon, LLC Maryland Corporate Place B Equity Affiliates, LLC Maryland Corporate Property, LLC Maryland Crown PointDC-8-9-10, L.L.C. LLC (f/k/a COPT DC-8, LLC) Virginia DC-8-9-10 DE, LLC Delaware Maryland DC-11, LLC (f/k/a COPT DC-11, LLC) Virginia DC-11, DE, LLC Delaware DC-12-14, LLC (f/k/a COPT DC-12, LLC) Virginia DC-12-14 DE, LLC Delaware Delaware Airport III, LLC Delaware Maryland Delaware Airport VIII, LLC Delaware Maryland Delaware Airport IX, LLC Delaware Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification Enterprise Campus Developer, LLC Maryland Fifth Exploration, L.L.C. Maryland Fourth Exploration, L.L.C. Maryland Gateway Crossing 95, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification Gateway 44, LLC Maryland Gateway 67, LLC Maryland Gateway 70, LLC Maryland Gateway 70 Holdings, LLC Maryland GI-COPT DC Partnership LLC Delaware Great Xxxxx I, L.L.C. Delaware Great Xxxxx II, L.L.C. Delaware Great Xxxxx III, L.L.C. Delaware Great Xxxxx IV, L.L.C. Delaware Maryland Great Xxxxx V, L.L.C. Delaware Maryland Harrisburg Investors II, LLC Delaware Harrisburg Investors III, LLC Delaware Honeyland 108, LLC Maryland Huntsville Holdings, LLC Maryland Jolly COPT I, LLC Maryland Jolly COPT II, LLC Maryland XX Xxxxxxxx Company, LLC Delaware AL Maritime Holdings, LLC Maryland M Square Associates, LLC Maryland M Square NOAA, LLC Maryland M Square 5825, LLC Maryland M Square 5850, LLC Maryland MOR Forbes, LLC Maryland MOR Forbes 2, LLC Maryland NBP One, LLC Maryland NBP Xxxx & Puff, LLC Maryland NBP Lot 3-A, LLC Maryland NBP Retail, LLC Maryland NBP 131, LLC Maryland NBP 132, LLC Maryland NBP 133, LLC Maryland NBP 134, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification NBP 135, LLC Maryland NBP 140, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification NBP 141, LLC Maryland NBP 191, LLC Maryland NBP 201, LLC Maryland NBP 201 Holdings, LLC Maryland NBP 211, LLC Maryland NBP 211 Holdings, LLC Maryland NBP 220, LLC Maryland NBP 220 Holdings, LLC Maryland NBP 221, LLC Maryland NBP 300, LLC Maryland NBP 300 Restaurant, LLC Maryland NBP 302, LLC Maryland NBP 304, LLC Maryland NBP 306, LLC Maryland NBP 308, LLC Maryland NBP 310, LLC Maryland NBP 312, LLC Maryland NBP 314, LLC Maryland NBP 316, LLC Maryland NBP 318, LLC Maryland NBP 320, LLC Maryland NBP 322, LLC Maryland NBP 324, LLC Maryland NBP 410, LLC Maryland NBP 420, LLC Maryland NBP 430, LLC Maryland NBP 520, LLC Maryland NBP 540, LLC Maryland Northcreek Manager, LLC Maryland One Xxxxxxx Road, LLC Maryland Park Circle Equities, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification Patriot Park, L.L.C. Colorado Patriot Ridge I, LLC Virginia Patriot Ridge II, LLC Virginia Name Jurisdiction of Incorporation/Formation Foreign Qualification Patriot Ridge Commons, LLC Virginia Patriot Ridge Holdings, LLC Virginia Patriot Ridge 7770, LLC Virigina Pecan Court L.L.C. Maryland Powerloft Holdings, LLC Delaware Red Cedar Building, LLC Maryland Redstone Gateway 1000, LLC Delaware XX Xxxxxxxx Gateway 1100, LLC Delaware XX Xxxxxxxx Gateway 1200, LLC Delaware XX Xxxxxxxx Gateway 2100, LLC Delaware XX Xxxxxxxx Gateway 4100, LLC Delaware Redstone Gateway 6500, LLC Delaware XX Xxxxxxxx Gateway 7200, LLC Delaware AL RG 2100 Restaurant, LLC Maryland AL RIVA Trustee, LLC Maryland Riverwood Business Center Equity Affiliates, LLC Maryland Tech Park IXxxxxxx Investors, LLC Maryland Tech Park IIDelaware Xxxxxxx School Holdings, LLC Maryland Tech Park IV, LLC Maryland Delaware Third Exploration L.L.C. Maryland Towerview I, LLC (f/k/a Towerview, LLC) Virginia TRC Pinnacle Towers, L.L.C. Xxxxxxxx Xxxxx Ridge I, LLC Maryland White Xxxxx Business Center, LLC Maryland WMBC 13A Investment Company, LLC Maryland 30 Charm City, LLC Maryland 30 LS Borrower, LLC Maryland 67 Financing LLC Maryland 110 Xxxxxx Xxxxxxx100 Charm City, LLC Maryland 100 LS Borrower, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification 131 Parkway, LLC Maryland 133 Parkway, LLC Maryland 134, LLC Maryland 135 Parkway, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification 141 Parkway, LLC Maryland 250 Charm City, LLC Maryland 302 Sentinel, LLC Maryland 304 Sentinel, LLC Maryland 306 Sentinel, LLC Maryland 318 Sentinel, LLC Maryland 320 Sentinel, LLC Maryland 322 Sentinel, LLC Maryland 800 International, LLC Maryland 849 International, LLC Maryland 000 Xxxxxxxx Xxxxxxx, LLC Maryland 900 International, LLC Maryland 930 International, LLC Maryland 999 Corporate, LLC Maryland 1099 Winterson, LLC Maryland 1190 Winterson, LLC Maryland 1199 Winterson, LLC Maryland 1362 Mellon, LLC Maryland 0000 1400 Xxxxxx Xxxx, LLC Maryland 1550 Nursery, LLC Maryland 2100 L Holdings, LLC Delaware DC 2691 Technology, LLC Maryland 2701 Technology, LLC Maryland 2711 Technology, LLC Maryland 2720 Technology, LLC Maryland 2730 Hercules, LLC Maryland 5825 URC Borrower, LLC Maryland 5850 URC Borrower, LLC Maryland 6700 Xxxxxxxxx Xxxx, LLC Maryland 6711 Gateway, LLC Maryland 6711 Gateway Funding, LLC Maryland 6721 Gateway, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification 6721 CGD, LLC Maryland 6731 CGGateway, LLC Maryland 6741 Gateway, LLC Maryland 6940 CGD, LLC Maryland 6950 CG, LLC Xxxxxxxx 0000 Maryland 7000 CG, LLC Xxxxxxxx 0000 Honeys, LLC Maryland 0000 Xxxxxxxx Xxxxxxx, LLC Maryland 7015 Xxxxxx Xxxxxxxx Drive, L.L.C. Maryland 0000 Xxxxxxxx Xxxxxxx, XXX Xxxxxxxx 0000-00 Riverwood, LLC Maryland 7200 Riverwood, LLC Maryland 7205 Riverwood, LLC Maryland 0000 Xxxxxxx Xxxxx Enterprises, LLC Maryland 0000 Xxxxxxx Xxxxx Enterprises, LLC Maryland 0000 Xxxxxxx Xxxxx Enterprises, LLC Maryland 7320 PD, LLC Maryland 7740 Milestone, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx, LLC Maryland 8621 RFD, LLC Maryland 8661 RFD, LLC Maryland 0000 Xxxxxxx Xxxx, LLC Maryland 9965 Federal Drive, LLC Colorado Name Jurisdiction of Incorporation/Formation Foreign Qualification 45310 Abell House, LLC Maryland Associations for which a Subsidiary of the Company is “Developer” White Xxxxx Business Community Owners’ Association II, Inc. Maryland White Xxxxx Community Owners’ Association, Inc. Maryland SCHEDULE II SIGNIFICANT SUBSIDIARIES - MLB OPINION Corporate Development Services, LLC Corporate Office Management, Inc. Corporate Office Properties, L.P. COPT Property Management Services, LLC SCHEDULE III SIGNIFICANT SUBSIDIARIES — GENERAL COUNSEL OPINION Airport Square II, LLC Blue Xxxx Investment Company, L.P. Corporate Gatespring, LLC NBP One, LLC NBP 131, LLC NBP 135, LLC 7200 Riverwood, LLC SCHEDULE IVMaryland

Limited Liability Companies. ASI, LLC Maryland Aerotech Manager, LLC Maryland Airport Square, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification Airport Square II, LLC Maryland Airport Square IV, LLC Maryland Airport Square V, LLC Maryland Airport Square X, LLC Maryland Airport Square XI, LLC Maryland Airport Square XIII, LLC Maryland Airport Square XIV, LLC Maryland Airport Square XV, LLC Maryland Airport Square XIX, LLC Maryland Airport Square XX, LLC Maryland Airport Square XXI, LLC Maryland Airport Square XXII, LLC Maryland Airport Square Holdings I, LLC Delaware Maryland Airport Square Holdings VI and VII, LLC Delaware Maryland Airport Square Partners, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification Airport Square Storms, LLC Maryland AP#5 Lot A, LLC Maryland AP#5 Lot B, LLC Maryland AP#5 Lot CAmbassador Center, LLC Maryland Arundel Preserve #5, LLC Maryland Atrium Building, LLC Maryland Canton Crossing Retail, LLC Maryland Clarks Hundred, LLC Maryland Clarks Hundred II, LLC Maryland Colorado Land Acquisition, LLC Colorado Columbia Equity Finance, LLC Maryland Columbia Gateway S-28, L.L.C. Maryland Commons Office Research, LLC Maryland COMI Investments, LLC Maryland Commons Office 6-B, LLC Maryland Concourse 1304, LLC Maryland COPT Academy Ridge, LLC Colorado COPT Aberdeen, LLC Maryland COPT Aerotech, LLC Colorado COPT AP 9, LLC Maryland COPT Arundel Preserve, LLC Maryland COPT Baltimore County I, LLC Maryland COPT Baltimore County II, LLC Maryland COPT Bridge Street Office, LLC Alabama Name Jurisdiction of Incorporation/Formation Foreign Qualification COPT CC 1600, LLC Maryland COPT CC Bulkhead, LLC Maryland COPT CCW I, LLC Maryland COPT CCW II, LLC Maryland COPT CCW III, LLC Maryland COPT CC D1, LLC Maryland COPT CC Holding, LLC Maryland COPT CC Parking, LLC Maryland COPT CC Tower, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification COPT Chantilly, LLC Xxxxxxxx XXXX Chantilly II, LLC Xxxxxxxx XXXX Chantilly I Manager, LLC Maryland COPT Chantilly II Manager, LLC Maryland COPT Colgate General, LLC Delaware Maryland COPT Concourse, LLC Delaware Maryland COPT Connect, LLC Xxxxxxxx XXXX Cresterra 3535, LLC Colorado COPT Cresterra Master, LLC Colorado COPT Dahlgren, LLC Xxxxxxxx XXXX Dahlgren Xxxxxxxx I, LLC Xxxxxxxx XXXX Dahlgren II, LLC Xxxxxxxx XXXX Dahlgren IV, LLC Xxxxxxxx XXXX Dahlgren Land, LLC Xxxxxxxx XXXX Data Management, LLC Maryland COPT DC-6, LLC Delaware Xxxxxxxx XXXX DC-8, LLC Xxxxxxxx XXXX DC-11, LLC Xxxxxxxx XXXX DC-12, LLC Xxxxxxxx XXXX Development & Construction Services, LLC Maryland PA, VA, TX, AL, DC COPT Environmental Systems LLC Maryland COPT Fairview, LLC Xxxxxxxx XXXX-FD Indian Head, LLC Maryland XXXX Xxxxxxxxx, LLC Maryland COPT Gate 63, LLC Maryland COPT Gate 6700-6708-6724, LLC Maryland COPT Gateway Commerce, LLC Delaware Maryland COPT General, LLC Maryland COPT Greens I, LLC Xxxxxxxx XXXX Greens II, LLC Xxxxxxxx XXXX Virginia Name Jurisdiction of Incorporation/Formation Foreign Qualification COPT Greens III, LLC Xxxxxxxx XXXX Harbour’s Edge, LLC Maryland COPT Harrisburg Xxxx Valley GP, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification COPT Huntsville, LLC Maryland COPT Indian Head, LLC Maryland COPT Interquest, LLC Colorado COPT Interquest III, LLC Colorado COPT Interquest IV, LLC Colorado COPT Interquest Epic I, LLC Colorado COPT Interquest Hybrid I, LLC Colorado COPT Interquest Hybrid II, LLC Colorado COPT-Xxxx XX#5, LLC Maryland COPT Maritime I & II, LLC Delaware DC COPT XxXxxxxxMontpelier, LLC Xxxxxxxx XXXX Metro Place II, LLC Xxxxxxxx XXXX Maryland COPT Newport, LLC Colorado COPT Newport C, LLC Colorado COPT Newport D, LLC Colorado COPT Northcreek, LLC Colorado COPT Northgate A, LLC Maryland COPT Northgate B, LLC Maryland COPT Northgate C, LLC Maryland COPT Northgate D, LLC Maryland COPT Northgate H, LLC Maryland COPT Northgate I, LLC Maryland COPT Opportunity Invest I, LLC Maryland COPT Powerhouse, LLC Maryland COPT Park Meadow, LLC Xxxxxxxx XXXX Parkstone, LLC Xxxxxxxx XXXX Patriot Park I, LLC Colorado COPT Patriot Park II, LLC Colorado COPT Patriot Park V, LLC Colorado COPT Patriot Park VI, LLC Colorado COPT Patriot Park VII, LLC Colorado COPT Patriot Park at Galley, LLC Colorado Name Jurisdiction of Incorporation/Formation Foreign Qualification COPT Pres Investment, LLC Maryland COPT Property Management Services, LLC Maryland DC, VA, DE, Name Jurisdiction of Incorporation/Formation Foreign Qualification PA, TX, AL COPT Renovation, LLC Maryland COPT Richmond I, LLC Xxxxxxxx XXXX Ridgeview I, LLC Xxxxxxxx XXXX Ridgeview II & III, LLC Xxxxxxxx XXXX Riverwood, LLC Maryland COPT San Antonio General, LLC Texas COPT Southwest VA, LLC Xxxxxxxx XXXX Sunrise, LLC Xxxxxxxx XXXX Stonecroft, LLC Xxxxxxxx XXXX T-11, LLC Maryland COPT Virtru, LLC Maryland COPT Waterview I, LLC Xxxxxxxx XXXX Waterview III, LLC Xxxxxxxx XXXX Westbranch, LLC Virginia Cornucopia Holdings, LLC Maryland Cornucopia Holdings II, LLC Maryland Corporate Center I, LLC Maryland Corporate Development Services, LLC Maryland VA Corporate Gatespring, LLC Maryland Corporate Gatespring II, LLC Maryland Corporate Office Services, LLC Maryland Corporate Paragon, LLC Maryland Corporate Place B Equity Affiliates, LLC Maryland Corporate Property, LLC Maryland Crown Point, L.L.C. Delaware Maryland Delaware Airport III, LLC Delaware Maryland Delaware Airport VIII, LLC Delaware Maryland Delaware Airport IX, LLC Delaware Maryland Enterprise Campus Developer, LLC Maryland Fifth Exploration, L.L.C. Maryland Ft. Xxxxxxx I, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification Ft. Xxxxxxx XX, LLC Maryland Ft. Xxxxxxx III, LLC Maryland Ft. Xxxxxxx XX, LLC Maryland Ft. Xxxxxxx Holding, LLC Maryland Fourth Exploration, L.L.C. Maryland Gateway Crossing 95, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification Gateway 44, LLC Maryland Gateway 67, LLC Maryland Gateway 70, LLC Maryland Gateway 70 Holdings, LLC Maryland Governors Court, LLC Maryland Governors Court 21, LLC Maryland Great Xxxxx I, L.L.C. Delaware Great Xxxxx II, L.L.C. Delaware Great Xxxxx III, L.L.C. Delaware Great Xxxxx IV, L.L.C. Delaware Maryland Great Xxxxx V, L.L.C. Delaware Maryland Harrisburg Investors II, LLC Delaware Harrisburg Investors III, LLC Delaware Honeyland 108, LLC Maryland Huntsville Holdings, LLC Maryland Jolly COPT I, LLC Maryland Jolly COPT II, LLC Maryland XX Xxxxxxxx Company, LLC Delaware AL Maritime Holdings, LLC Maryland M Square Associates, LLC Maryland M Square NOAA, LLC Maryland M Square 5825, LLC Maryland M Square 5850, LLC Maryland MOR Forbes, LLC Maryland MOR Forbes 2, LLC Maryland NBP One, LLC Maryland NBP Xxxx & Puff, LLC Maryland NBP Lot 3-A, LLC Maryland NBP Retail, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification NBP 131, LLC Maryland NBP 132, LLC Maryland NBP 133, LLC Maryland NBP 134, LLC Maryland NBP 135, LLC Maryland NBP 140, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification NBP 141, LLC Maryland NBP 191, LLC Maryland NBP 201, LLC Maryland NBP 201 Holdings, LLC Maryland NBP 211, LLC Maryland NBP 211 Holdings, LLC Maryland NBP 220, LLC Maryland NBP 220 Holdings, LLC Maryland NBP 221, LLC Maryland NBP 300, LLC Maryland NBP 302, LLC Maryland NBP 304, LLC Maryland NBP 306, LLC Maryland NBP 308, LLC Maryland NBP 310, LLC Maryland NBP 312, LLC Maryland NBP 314, LLC Maryland NBP 316, LLC Maryland NBP 318, LLC Maryland NBP 320, LLC Maryland NBP 322, LLC Maryland NBP 324, LLC Maryland NBP 410, LLC Maryland NBP 420, LLC Maryland NBP 430, LLC Maryland NBP 520, LLC Maryland NBP 540, LLC Maryland Northcreek Manager, LLC Maryland One Xxxxxxx RoadNottingham Center, LLC Maryland Opportunity Invest Ventures, LLC Delaware Park Circle Equities, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification Patriot Park, L.L.C. Colorado Patriot Ridge I, LLC Virginia Patriot Ridge II, LLC Virginia Name Jurisdiction of Incorporation/Formation Foreign Qualification Patriot Ridge Commons, LLC Virginia Patriot Ridge Holdings, LLC Virginia Patriot Ridge 7770, LLC Virigina Pecan Court L.L.C. Maryland Powerloft @ Innovation I, LLC Delaware VA Powerloft Holdings, LLC Delaware Powerloft Services, LLC Delaware VA Professional Center I, LLC Maryland Professional Center III, LLC Maryland Red Cedar Building, LLC Maryland Redstone Gateway 1000, LLC Delaware XX Xxxxxxxx Gateway 1100, LLC Delaware XX Xxxxxxxx Gateway 1200, LLC Delaware XX Xxxxxxxx Gateway 2100, LLC Delaware XX Xxxxxxxx Gateway 6500, LLC Delaware XX Xxxxxxxx Gateway 7200, LLC Delaware AL RIVA Trustee, LLC Maryland Rivers Center III Investors, LLC Maryland Riverwood Business Center Equity Affiliates, LLC Maryland Rockville Corporate Center, LLC Maryland Xxxxxxxxx 216 Investors, LLC Maryland Xxxxxxxxx Center Equities, LLC Maryland Sterling York, LLC Delaware Maryland Tech Park I, LLC Maryland Tech Park II, LLC Maryland Tech Park IV, LLC Maryland Third Exploration L.L.C. Maryland Towerview, LLC Virginia TRC Pinnacle Towers, L.L.C. Xxxxxxxx Xxxxx Ridge I, LLC Maryland White Xxxxx Business Center, LLC Maryland White Xxxxx Professional Center II, LLC Maryland Xxxxx Investors, LLC Maryland WMBC 13A Investment Company, LLC Maryland 67 Financing LLC Maryland 50 Name Jurisdiction of Incorporation/Formation Foreign Qualification 110 Xxxxxx Xxxxxxx, LLC Maryland 131 Parkway, LLC Maryland 132, LLC Maryland 133 Parkway, LLC Maryland 134, LLC Maryland 135 Parkway, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification 141 Parkway, LLC Maryland 250 Charm City221, LLC Maryland 000 Xxxxxxxxx Xxxxxx, LLC Maryland 302 Sentinel, LLC Maryland 304 Sentinel, LLC Maryland 306 Sentinel, LLC Maryland 318 Sentinel, LLC Maryland 320 Sentinel, LLC Maryland 322 Sentinel, LLC Maryland 800 International, LLC Maryland 849 International, LLC Maryland 000 Xxxxxxxx Xxxxxxx, LLC Maryland 900 International, LLC Maryland 930 International, LLC Maryland 999 Corporate, LLC Maryland 1099 Winterson, LLC Maryland 1190 Winterson, LLC Maryland 1199 Winterson, LLC Maryland 1362 Mellon, LLC Maryland 0000 Xxxxxx Xxxx, LLC Maryland 1550 Nursery, LLC Maryland 2691 Technology, LLC Maryland 2701 Technology, LLC Maryland 2711 Technology, LLC Maryland 2720 Technology, LLC Maryland 2730 Hercules, LLC Maryland 0000 Xxxx Xxxxxxxxx Xxxxx, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification 0000 Xxxxxxxxx Xxxx, LLC Virginia 5825 URC Borrower, LLC Maryland 5850 URC Borrower, LLC Maryland 6700 Xxxxxxxxx Xxxx, LLC Maryland 6711 CG, LLC Maryland 6711 Gateway, LLC Maryland 6711 Gateway Funding, LLC Maryland 6721 Gateway, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification 6721 CGD, LLC Maryland 6731 CG, LLC Maryland 6731 Gateway, LLC Maryland 6741 Gateway, LLC Maryland 6940 CGD, LLC Maryland 6950 CG, LLC Xxxxxxxx 0000 CG, LLC Xxxxxxxx 0000 Honeys, LLC Maryland 0000 Xxxxxxxx Xxxxxxx, LLC Maryland 7015 Xxxxxx Xxxxxxxx Drive, L.L.C. Maryland 0000 Xxxxxxxx Xxxxxxx, XXX Xxxxxxxx 0000-00 Riverwood, LLC Maryland 7200 Riverwood, LLC Maryland 7205 Riverwood, LLC Maryland 0000 Xxxxxxxxxx Xxxx, LLC Maryland 0000 Xxxxxxx Xxxxx Enterprises, LLC Maryland 0000 Xxxxxxx Xxxxx Enterprises, LLC Maryland 0000 Xxxxxxx Xxxxx Enterprises, LLC Maryland 7320 PD, LLC Maryland 0000 Xxxxxxxxxx Xxxx, LLC Maryland 7740 Milestone, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx8029 Corporate, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx8110 Corporate, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx8140 Corporate, LLC Maryland 8621 RFD, LLC Maryland 8661 RFD, LLC Maryland 0000 Xxxxxxx Xxxx, LLC Maryland 9965 Federal Drive, LLC Colorado Name Jurisdiction of Incorporation/Formation Foreign Qualification 45310 9020 Xxxxxxxxxx, LLC Maryland 0000 Xxxxxxx Xxxx, LLC Maryland 0000 Xxxxxxx Xxxxx, XXX Xxxxxxxx 00000 XxXxxxxxx Road, LLC Maryland 00000 XxXxxxxxx Xxxx, LLC Maryland 11800 Tech Road LLC Delaware Maryland 00000 Xxxx Xxxxxx Xxxx, XXX Xxxxxxxx 00000 Abell House, LLC Maryland Associations for which a Subsidiary of the Company is “Developer” White Xxxxx Business Community Owners’ Association II, Inc. Maryland White Xxxxx Community Owners’ Association, Inc. Maryland SCHEDULE II SIGNIFICANT SUBSIDIARIES - MLB OPINION Corporate Development ServicesV MATERIAL DOCUMENTS Second Amended and Restated Limited Partnership Agreement of the Operating Partnership, LLC Corporate Office Managementdated December 7, Inc. Corporate Office Properties1999 (filed with the Company’s Annual Report on Form 10-K on March 16, L.P. COPT Property Management Services2000). Second Amendment to Second Amended and Restated Limited Partnership Agreement of the Operating Partnership, LLC SCHEDULE III SIGNIFICANT SUBSIDIARIES — GENERAL COUNSEL OPINION Airport Square IIdated December 21, LLC Blue Xxxx Investment 1999 (filed with the Company’s Post Effective Amendment No. 2 to Form S-3, L.P. Corporate Gatespringdated November 1, LLC NBP One2000 (Registration Statement No. 333-71807)). Third Amendment to Second Amended and Restated Limited Partnership Agreement of the Operating Partnership, LLC NBP 131dated September 29, LLC NBP 1352000 (filed with the Company’s Post Effective Amendment No. 2 to Form S-3, LLC 7200 Riverwooddated November 1, LLC SCHEDULE IV2000 (Registration Statement No. 333-71807)). Fourth Amendment to Second Amended and Restated Limited Partnership Agreement of the Operating Partnership, dated November 27, 2000 (filed with the Company’s Annual Report on Form 10-K on March 27, 2003). Fifth Amendment to Second Amended and Restated Limited Partnership Agreement of the Operating Partnership, dated January 25, 2001 (filed with the Company’s Annual Report on Form 10-K on March 27, 2003).

Limited Liability Companies. ASI, LLC Maryland Aerotech Manager, LLC Maryland Airport Square, LLC Maryland Airport Square II, LLC Maryland Airport Square IV, LLC Maryland Airport Square V, LLC Maryland Airport Square X, LLC Maryland Airport Square XI, LLC Maryland Airport Square XIII, LLC Maryland Airport Square XIV, LLC Maryland Airport Square XV, LLC Maryland Airport Square XIX, LLC Maryland Airport Square XX, LLC Maryland Airport Square XXI, LLC Maryland Airport Square XXII, LLC Maryland Airport Square Holdings I, LLC Delaware Maryland Airport Square Holdings VI and VII, LLC Delaware Maryland Airport Square Partners, LLC Maryland Airport Square Storms, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification Airport Square Storms, LLC Maryland AP#5 Lot A, LLC Maryland AP#5 Lot B, LLC Maryland AP#5 Lot C, LLC Maryland Arundel Preserve #5, LLC Maryland Atrium Building, LLC Maryland Canton Crossing Retail, LLC Maryland Clarks Hundred, LLC Maryland Clarks Hundred II, LLC Maryland Colorado Land Acquisition, LLC Colorado Columbia Equity Finance, LLC Maryland Columbia Gateway S-28, L.L.C. Maryland Commons Office Research, LLC Maryland COMI Investments, LLC Maryland Commons Office 6-B, LLC Maryland Concourse 1304, LLC Maryland COPT Academy Ridge, LLC Colorado COPT Aberdeen, LLC Maryland COPT Aerotech, LLC Colorado COPT AP 9, LLC Maryland COPT Arundel Preserve, LLC Maryland COPT Baltimore County I, LLC Maryland COPT Baltimore County II, LLC Maryland COPT Bridge Street Office, LLC Alabama COPT CC 1600, LLC Maryland COPT CC Bulkhead, LLC Maryland COPT CCW I, LLC Maryland COPT CCW II, LLC Maryland COPT CCW III, LLC Maryland COPT CC D1, LLC Maryland COPT CC Holding, LLC Maryland COPT CC Parking, LLC Maryland COPT CC Tower, LLC Maryland COPT Chantilly, LLC Virginia Name Jurisdiction of Incorporation/Formation Foreign Qualification COPT Chantilly, LLC Xxxxxxxx XXXX Chantilly II, LLC Xxxxxxxx XXXX Chantilly I Manager, LLC Maryland COPT Chantilly II Manager, LLC Maryland COPT Colgate General, LLC Delaware Maryland COPT Concourse, LLC Delaware Maryland COPT Connect, LLC Xxxxxxxx XXXX Cresterra 3535, LLC Colorado COPT Cresterra Master, LLC Colorado COPT Dahlgren, LLC Xxxxxxxx XXXX Dahlgren I, LLC Xxxxxxxx XXXX Dahlgren II, LLC Xxxxxxxx XXXX Dahlgren IV, LLC Xxxxxxxx XXXX Dahlgren Land, LLC Xxxxxxxx XXXX Data Management, LLC Maryland COPT DC-6, LLC Delaware Xxxxxxxx XXXX DC-8, LLC Xxxxxxxx XXXX DC-11, LLC Xxxxxxxx XXXX DC-12, LLC Xxxxxxxx XXXX Development & Construction Services, LLC Maryland PA, VA, TX, AL, DC COPT Fairview, LLC Xxxxxxxx XXXX-FD Indian Head, LLC Maryland XXXX Xxxxxxxxx, LLC Maryland COPT Gate 63, LLC Maryland COPT Gate 6700-6708-6724, LLC Maryland COPT Gateway Commerce, LLC Delaware Maryland COPT General, LLC Maryland COPT Greens I, LLC Xxxxxxxx XXXX Greens II, LLC Xxxxxxxx XXXX Greens III, LLC Xxxxxxxx XXXX Harbour’s Edge, LLC Maryland COPT Harrisburg GP, LLC Maryland COPT Xxxx Valley GP, LLC Maryland COPT Huntsville, LLC Maryland COPT Indian Head, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification COPT Huntsville, LLC Maryland COPT Interquest, LLC Colorado COPT Interquest III, LLC Colorado COPT Interquest IV, LLC Colorado COPT Interquest Epic I, LLC Colorado COPT Interquest Hybrid I, LLC Colorado COPT Interquest Hybrid II, LLC Colorado COPT-Xxxx XX#5, LLC Maryland COPT Maritime I & II, LLC Delaware DC COPT XxXxxxxx, LLC Xxxxxxxx XXXX Metro Place II, LLC Xxxxxxxx XXXX Newport, LLC Colorado COPT Newport C, LLC Colorado COPT Newport D, LLC Colorado COPT Northcreek, LLC Colorado COPT Northgate A, LLC Maryland COPT Northgate B, LLC Maryland COPT Northgate C, LLC Maryland COPT Northgate D, LLC Maryland COPT Northgate H, LLC Maryland COPT Northgate I, LLC Maryland COPT Opportunity Invest I, LLC Maryland COPT Powerhouse, LLC Maryland COPT Park Meadow, LLC Xxxxxxxx XXXX Parkstone, LLC Xxxxxxxx XXXX Patriot Park I, LLC Colorado COPT Patriot Park II, LLC Colorado COPT Patriot Park V, LLC Colorado COPT Patriot Park VI, LLC Colorado COPT Patriot Park VII, LLC Colorado COPT Patriot Park at Galley, LLC Colorado COPT Pres Investment, LLC Maryland COPT Property Management Services, LLC Maryland DC, VA, DE, Name Jurisdiction of Incorporation/Formation Foreign Qualification PA, TX, AL COPT Renovation, LLC Maryland COPT Richmond I, LLC Xxxxxxxx XXXX Virginia Name Jurisdiction of Incorporation/Formation Foreign Qualification COPT Ridgeview I, LLC Xxxxxxxx XXXX Ridgeview II & III, LLC Xxxxxxxx XXXX Riverwood, LLC Maryland COPT San Antonio General, LLC Texas COPT Southwest VA, LLC Xxxxxxxx XXXX Sunrise, LLC Xxxxxxxx XXXX Stonecroft, LLC Xxxxxxxx XXXX T-11, LLC Maryland COPT Virtru, LLC Maryland COPT Waterview I, LLC Xxxxxxxx XXXX Waterview III, LLC Xxxxxxxx XXXX Westbranch, LLC Virginia Cornucopia Holdings, LLC Maryland Cornucopia Holdings II, LLC Maryland Corporate Center I, LLC Maryland Corporate Development Services, LLC Maryland VA Corporate Gatespring, LLC Maryland Corporate Gatespring II, LLC Maryland Corporate Office Services, LLC Maryland Corporate Paragon, LLC Maryland Corporate Place B Equity Affiliates, LLC Maryland Corporate Property, LLC Maryland Crown Point, L.L.C. Delaware Maryland Delaware Airport III, LLC Delaware Maryland Delaware Airport VIII, LLC Delaware Maryland Delaware Airport IX, LLC Delaware Maryland Enterprise Campus Developer, LLC Maryland Fifth Exploration, L.L.C. Maryland Fourth Exploration, L.L.C. Maryland Gateway Crossing 95, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification Gateway 44, LLC Maryland Gateway 67, LLC Maryland Gateway 70, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification Gateway 70 Holdings, LLC Maryland Great Xxxxx I, L.L.C. Delaware Great Xxxxx II, L.L.C. Delaware Great Xxxxx III, L.L.C. Delaware Great Xxxxx IV, L.L.C. Delaware Maryland Great Xxxxx V, L.L.C. Delaware Maryland Harrisburg Investors II, LLC Delaware Harrisburg Investors III, LLC Delaware Honeyland 108, LLC Maryland Huntsville Holdings, LLC Maryland Jolly COPT I, LLC Maryland Jolly COPT II, LLC Maryland XX Xxxxxxxx Company, LLC Delaware AL Maritime Holdings, LLC Maryland M Square Associates, LLC Maryland M Square NOAA, LLC Maryland M Square 5825, LLC Maryland M Square 5850, LLC Maryland MOR Forbes, LLC Maryland MOR Forbes 2, LLC Maryland NBP One, LLC Maryland NBP Xxxx & Puff, LLC Maryland NBP Lot 3-A, LLC Maryland NBP Retail, LLC Maryland NBP 131, LLC Maryland NBP 132, LLC Maryland NBP 133, LLC Maryland NBP 134, LLC Maryland NBP 135, LLC Maryland NBP 140, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification NBP 141, LLC Maryland NBP 191, LLC Maryland NBP 201, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification NBP 201 Holdings, LLC Maryland NBP 211, LLC Maryland NBP 211 Holdings, LLC Maryland NBP 220, LLC Maryland NBP 220 Holdings, LLC Maryland NBP 221, LLC Maryland NBP 300, LLC Maryland NBP 302, LLC Maryland NBP 304, LLC Maryland NBP 306, LLC Maryland NBP 308, LLC Maryland NBP 310, LLC Maryland NBP 312, LLC Maryland NBP 314, LLC Maryland NBP 316, LLC Maryland NBP 318, LLC Maryland NBP 320, LLC Maryland NBP 322, LLC Maryland NBP 324, LLC Maryland NBP 410, LLC Maryland NBP 420, LLC Maryland NBP 430, LLC Maryland NBP 520, LLC Maryland NBP 540, LLC Maryland Northcreek Manager, LLC Maryland One Xxxxxxx Road, LLC Maryland Park Circle Equities, LLC Maryland Patriot Park, L.L.C. Colorado Patriot Ridge I, LLC Virginia Patriot Ridge II, LLC Virginia Name Jurisdiction of Incorporation/Formation Foreign Qualification Patriot Ridge Commons, LLC Virginia Patriot Ridge Holdings, LLC Virginia Patriot Ridge 7770, LLC Virigina Xxxxxxxx Name Jurisdiction of Incorporation/Formation Foreign Qualification Pecan Court L.L.C. Maryland Powerloft Holdings, LLC Delaware Professional Center I, LLC Maryland Professional Center III, LLC Maryland Red Cedar Building, LLC Maryland Redstone Gateway 1000, LLC Delaware XX Xxxxxxxx Gateway 1100, LLC Delaware XX Xxxxxxxx Gateway 1200, LLC Delaware XX Xxxxxxxx Gateway 2100, LLC Delaware XX Xxxxxxxx Gateway 6500, LLC Delaware XX Xxxxxxxx Gateway 7200, LLC Delaware AL RIVA Trustee, LLC Maryland Riverwood Business Center Equity Affiliates, LLC Maryland Tech Park I, LLC Maryland Tech Park II, LLC Maryland Tech Park IV, LLC Maryland Third Exploration L.L.C. Maryland Towerview, LLC Virginia TRC Pinnacle Towers, L.L.C. Xxxxxxxx Xxxxx Ridge I, LLC Maryland White Xxxxx Business Center, LLC Maryland White Xxxxx Professional Center II, LLC Maryland WMBC 13A Investment Company, LLC Maryland 67 Financing LLC Maryland 110 Xxxxxx Xxxxxxx, LLC Maryland 131 Parkway, LLC Maryland 132, LLC Maryland 133 Parkway, LLC Maryland 134, LLC Maryland 135 Parkway, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification 141 Parkway, LLC Maryland 250 Charm City221, LLC Maryland 302 Sentinel, LLC Maryland 304 Sentinel, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification 306 Sentinel, LLC Maryland 318 Sentinel, LLC Maryland 320 Sentinel, LLC Maryland 322 Sentinel, LLC Maryland 800 International, LLC Maryland 849 International, LLC Maryland 000 Xxxxxxxx Xxxxxxx, LLC Maryland 900 International, LLC Maryland 930 International, LLC Maryland 999 Corporate, LLC Maryland 1099 Winterson, LLC Maryland 1190 Winterson, LLC Maryland 1199 Winterson, LLC Maryland 1362 Mellon, LLC Maryland 0000 Xxxxxx Xxxx, LLC Maryland 1550 Nursery, LLC Maryland 2691 Technology, LLC Maryland 2701 Technology, LLC Maryland 2711 Technology, LLC Maryland 2720 Technology, LLC Maryland 2730 Hercules, LLC Maryland 0000 Xxxxxxxxx Xxxx, LLC Virginia 5825 URC Borrower, LLC Maryland 5850 URC Borrower, LLC Maryland 6700 Xxxxxxxxx Xxxx, LLC Maryland 6711 CG, LLC Maryland 6711 Gateway, LLC Maryland 6711 Gateway Funding, LLC Maryland 6721 Gateway, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification 6721 CGD, LLC Maryland 6731 CG, LLC Maryland 6731 Gateway, LLC Maryland 6741 Gateway, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification 6940 CGD, LLC Maryland 6950 CG, LLC Xxxxxxxx 0000 CG, LLC Xxxxxxxx 0000 Honeys, LLC Maryland 0000 Xxxxxxxx Xxxxxxx, LLC Maryland 7015 Xxxxxx Xxxxxxxx Drive, L.L.C. Maryland 0000 Xxxxxxxx Xxxxxxx, XXX Xxxxxxxx 0000-00 Riverwood, LLC Maryland 7200 Riverwood, LLC Maryland 7205 Riverwood, LLC Maryland 0000 Xxxxxxx Xxxxx Enterprises, LLC Maryland 0000 Xxxxxxx Xxxxx Enterprises, LLC Maryland 0000 Xxxxxxx Xxxxx Enterprises, LLC Maryland 7320 PD, LLC Maryland 7740 Milestone, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx, LLC Maryland 8029 Corporate, LLC Maryland 8110 Corporate, LLC Maryland 8140 Corporate, LLC Maryland 8621 RFD, LLC Maryland 8661 RFD, LLC Maryland 0000 Xxxxxxx Xxxx, LLC Maryland 9965 Federal Drive, LLC Colorado 00000 Xxxx Xxxxxx Xxxx, XXX Xxxxxxxx 00000 Abell House, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification 45310 Abell House, LLC Maryland Associations for which a Subsidiary of the Company is “Developer” White Xxxxx Business Community Owners’ Association II, Inc. Maryland White Xxxxx Community Owners’ Association, Inc. Maryland SCHEDULE II SIGNIFICANT SUBSIDIARIES - MLB OPINION Corporate Development ServicesIV MATERIAL DOCUMENTS Second Amended and Restated Limited Partnership Agreement of the Operating Partnership, LLC Corporate Office Managementdated December 7, Inc. Corporate Office Properties1999 (filed with the Company’s Annual Report on Form 10-K on March 16, L.P. COPT Property Management Services2000). Second Amendment to Second Amended and Restated Limited Partnership Agreement of the Operating Partnership, LLC SCHEDULE III SIGNIFICANT SUBSIDIARIES — GENERAL COUNSEL OPINION Airport Square IIdated December 21, LLC Blue Xxxx Investment 1999 (filed with the Company’s Post Effective Amendment No. 2 to Form S-3, L.P. Corporate Gatespringdated November 1, LLC NBP One2000 (Registration Statement No. 333-71807)). Third Amendment to Second Amended and Restated Limited Partnership Agreement of the Operating Partnership, LLC NBP 131dated September 29, LLC NBP 1352000 (filed with the Company’s Post Effective Amendment No. 2 to Form S-3, LLC 7200 Riverwooddated November 1, LLC SCHEDULE IV2000 (Registration Statement No. 333-71807)). Fourth Amendment to Second Amended and Restated Limited Partnership Agreement of the Operating Partnership, dated November 27, 2000 (filed with the Company’s Annual Report on Form 10-K on March 27, 2003). Fifth Amendment to Second Amended and Restated Limited Partnership Agreement of the Operating Partnership, dated January 25, 2001 (filed with the Company’s Annual Report on Form 10-K on March 27, 2003).

Limited Liability Companies. ASI, LLC Maryland Aerotech Manager, LLC Maryland Airport Square, LLC Maryland Airport Square II, LLC Maryland Airport Square IV, LLC Maryland Airport Square V, LLC Maryland Airport Square X, LLC Maryland Airport Square XI, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification Airport Square XIII, LLC Maryland Airport Square XIV, LLC Maryland Airport Square XV, LLC Maryland Airport Square XIX, LLC Maryland Airport Square XX, LLC Maryland Airport Square XXI, LLC Maryland Airport Square XXII, LLC Maryland Airport Square Holdings I, LLC Delaware Maryland Airport Square Holdings VI and VII, LLC Delaware Maryland Airport Square Partners, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification Airport Square Storms, LLC Maryland AP#5 Lot A, LLC Maryland AP#5 Lot B, LLC Maryland AP#5 Lot C, LLC Maryland Arundel Preserve #5, LLC Maryland Atrium Building, LLC Maryland Canton Crossing Retail, LLC Maryland Clarks Hundred, LLC Maryland Clarks Hundred II, LLC Maryland Colorado Land Acquisition, LLC Colorado Columbia Equity Finance, LLC Maryland Columbia Gateway S-28, L.L.C. Maryland Commons Office Research, LLC Maryland COMI Investments, LLC Maryland Commons Office 6-B, LLC Maryland Concourse 1304, LLC Maryland COPT Academy Ridge, LLC Colorado COPT Aberdeen, LLC Maryland COPT Aerotech, LLC Colorado COPT AP 9, LLC Maryland COPT Arundel Preserve, LLC Maryland COPT Baltimore County I, LLC Maryland COPT Baltimore County II, LLC Maryland COPT Bridge Street Office, LLC Alabama COPT CC 1600, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification COPT CC Bulkhead, LLC Maryland COPT CCW I, LLC Maryland COPT CCW II, LLC Maryland COPT CCW III, LLC Maryland COPT CC D1, LLC Maryland COPT CC Holding, LLC Maryland COPT CC Parking, LLC Maryland COPT CC Tower, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification COPT Chantilly, LLC Xxxxxxxx XXXX Chantilly II, LLC Xxxxxxxx XXXX Chantilly I Manager, LLC Maryland COPT Chantilly II Manager, LLC Maryland COPT Colgate General, LLC Delaware Maryland COPT Concourse, LLC Delaware Maryland COPT Connect, LLC Xxxxxxxx XXXX Cresterra 3535, LLC Colorado COPT Cresterra Master, LLC Colorado COPT Dahlgren, LLC Xxxxxxxx XXXX Dahlgren Xxxxxxxx I, LLC Xxxxxxxx XXXX Dahlgren II, LLC Xxxxxxxx XXXX Dahlgren IV, LLC Xxxxxxxx XXXX Dahlgren Land, LLC Xxxxxxxx XXXX Data Management, LLC Maryland COPT DC-6, LLC Delaware Xxxxxxxx XXXX DC-8, LLC Xxxxxxxx XXXX DC-11, LLC Xxxxxxxx XXXX DC-12, LLC Xxxxxxxx XXXX Development & Construction Services, LLC Maryland PA, VA, TX, AL, DC COPT Fairview, LLC Xxxxxxxx XXXX-FD Indian Head, LLC Maryland XXXX Xxxxxxxxx, LLC Maryland COPT Gate 63, LLC Maryland COPT Gate 6700-6708-6724, LLC Maryland COPT Gateway Commerce, LLC Delaware Maryland COPT General, LLC Maryland COPT Greens I, LLC Xxxxxxxx XXXX Virginia Name Jurisdiction of Incorporation/Formation Foreign Qualification COPT Greens II, LLC Xxxxxxxx XXXX Greens III, LLC Xxxxxxxx XXXX Harbour’s Edge, LLC Maryland COPT Harrisburg GP, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification COPT Xxxx Valley GP, LLC Maryland COPT Huntsville, LLC Maryland COPT Indian Head, LLC Maryland COPT Interquest, LLC Colorado COPT Interquest III, LLC Colorado COPT Interquest IV, LLC Colorado COPT Interquest Epic I, LLC Colorado COPT Interquest Hybrid I, LLC Colorado COPT Interquest Hybrid II, LLC Colorado COPT-Xxxx XX#5, LLC Maryland COPT Maritime I & II, LLC Delaware DC COPT XxXxxxxx, LLC Xxxxxxxx XXXX Metro Place IIMontpelier, LLC Xxxxxxxx XXXX Maryland COPT Newport, LLC Colorado COPT Newport C, LLC Colorado COPT Newport D, LLC Colorado COPT Northcreek, LLC Colorado COPT Northgate A, LLC Maryland COPT Northgate B, LLC Maryland COPT Northgate C, LLC Maryland COPT Northgate D, LLC Maryland COPT Northgate H, LLC Maryland COPT Northgate I, LLC Maryland COPT Opportunity Invest I, LLC Maryland COPT Powerhouse, LLC Maryland COPT Park Meadow, LLC Xxxxxxxx XXXX Parkstone, LLC Xxxxxxxx XXXX Patriot Park I, LLC Colorado COPT Patriot Park II, LLC Colorado Name Jurisdiction of Incorporation/Formation Foreign Qualification COPT Patriot Park V, LLC Colorado COPT Patriot Park VI, LLC Colorado COPT Patriot Park VII, LLC Colorado COPT Patriot Park at Galley, LLC Colorado COPT Pres Investment, LLC Maryland COPT Property Management Services, LLC Maryland DC, VA, DE, Name Jurisdiction of Incorporation/Formation Foreign Qualification PA, TX, AL COPT Renovation, LLC Maryland COPT Richmond I, LLC Xxxxxxxx XXXX Ridgeview I, LLC Xxxxxxxx XXXX Ridgeview II & III, LLC Xxxxxxxx XXXX Riverwood, LLC Maryland COPT San Antonio General, LLC Texas COPT Southwest VA, LLC Xxxxxxxx XXXX Sunrise, LLC Xxxxxxxx XXXX Stonecroft, LLC Xxxxxxxx XXXX T-11, LLC Maryland COPT Virtru, LLC Maryland COPT Waterview I, LLC Xxxxxxxx XXXX Waterview III, LLC Xxxxxxxx XXXX Westbranch, LLC Virginia Cornucopia Holdings, LLC Maryland Cornucopia Holdings II, LLC Maryland Corporate Center I, LLC Maryland Corporate Development Services, LLC Maryland VA Corporate Gatespring, LLC Maryland Corporate Gatespring II, LLC Maryland Corporate Office Services, LLC Maryland Corporate Paragon, LLC Maryland Corporate Place B Equity Affiliates, LLC Maryland Corporate Property, LLC Maryland Crown Point, L.L.C. Delaware Maryland Delaware Airport III, LLC Delaware Maryland Delaware Airport VIII, LLC Delaware Maryland Delaware Airport IX, LLC Delaware Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification Enterprise Campus Developer, LLC Maryland Fifth Exploration, L.L.C. Maryland Fourth Exploration, L.L.C. Maryland Gateway Crossing 95, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification Gateway 44, LLC Maryland Gateway 67, LLC Maryland Gateway 70, LLC Maryland Gateway 70 Holdings, LLC Maryland Great Xxxxx I, L.L.C. Delaware Great Xxxxx II, L.L.C. Delaware Great Xxxxx III, L.L.C. Delaware Great Xxxxx IV, L.L.C. Delaware Maryland Great Xxxxx V, L.L.C. Delaware Maryland Harrisburg Investors II, LLC Delaware Harrisburg Investors III, LLC Delaware Honeyland 108, LLC Maryland Huntsville Holdings, LLC Maryland Jolly COPT I, LLC Maryland Jolly COPT II, LLC Maryland XX Xxxxxxxx Company, LLC Delaware AL Maritime Holdings, LLC Maryland M Square Associates, LLC Maryland M Square NOAA, LLC Maryland M Square 5825, LLC Maryland M Square 5850, LLC Maryland MOR Forbes, LLC Maryland MOR Forbes 2, LLC Maryland NBP One, LLC Maryland NBP Xxxx & Puff, LLC Maryland NBP Lot 3-A, LLC Maryland NBP Retail, LLC Maryland NBP 131, LLC Maryland NBP 132, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification NBP 133, LLC Maryland NBP 134, LLC Maryland NBP 135, LLC Maryland NBP 140, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification NBP 141, LLC Maryland NBP 191, LLC Maryland NBP 201, LLC Maryland NBP 201 Holdings, LLC Maryland NBP 211, LLC Maryland NBP 211 Holdings, LLC Maryland NBP 220, LLC Maryland NBP 220 Holdings, LLC Maryland NBP 221, LLC Maryland NBP 300, LLC Maryland NBP 302, LLC Maryland NBP 304, LLC Maryland NBP 306, LLC Maryland NBP 308, LLC Maryland NBP 310, LLC Maryland NBP 312, LLC Maryland NBP 314, LLC Maryland NBP 316, LLC Maryland NBP 318, LLC Maryland NBP 320, LLC Maryland NBP 322, LLC Maryland NBP 324, LLC Maryland NBP 410, LLC Maryland NBP 420, LLC Maryland NBP 430, LLC Maryland NBP 520, LLC Maryland NBP 540, LLC Maryland Northcreek Manager, LLC Maryland Nottingham Center, LLC Maryland Opportunity Invest Ventures, LLC Delaware One Xxxxxxx Road, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification Park Circle Equities, LLC Maryland Patriot Park, L.L.C. Colorado Patriot Ridge I, LLC Virginia Patriot Ridge II, LLC Virginia Name Jurisdiction of Incorporation/Formation Foreign Qualification Patriot Ridge Commons, LLC Virginia Patriot Ridge Holdings, LLC Virginia Patriot Ridge 7770, LLC Virigina Xxxxxxxx Pecan Court L.L.C. Maryland Powerloft Holdings, LLC Delaware Professional Center I, LLC Maryland Professional Center III, LLC Maryland Red Cedar Building, LLC Maryland Redstone Gateway 1000, LLC Delaware XX Xxxxxxxx Gateway 1100, LLC Delaware XX Xxxxxxxx Gateway 1200, LLC Delaware XX Xxxxxxxx Gateway 2100, LLC Delaware XX Xxxxxxxx Gateway 6500, LLC Delaware XX Xxxxxxxx Gateway 7200, LLC Delaware AL RIVA Trustee, LLC Maryland Rivers Center III Investors, LLC Maryland Riverwood Business Center Equity Affiliates, LLC Maryland Rockville Corporate Center, LLC Maryland Xxxxxxxxx Center Equities, LLC Maryland Sterling York, LLC Delaware Maryland Tech Park I, LLC Maryland Tech Park II, LLC Maryland Tech Park IV, LLC Maryland Third Exploration L.L.C. Maryland Towerview, LLC Virginia TRC Pinnacle Towers, L.L.C. Xxxxxxxx Xxxxx Ridge I, LLC Maryland White Xxxxx Business Center, LLC Maryland White Xxxxx Professional Center II, LLC Maryland Woods Investors, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification WMBC 13A Investment Company, LLC Maryland 67 Financing LLC Maryland 110 Xxxxxx Xxxxxxx, LLC Maryland 131 Parkway, LLC Maryland 132, LLC Maryland 133 Parkway, LLC Maryland 134, LLC Maryland 135 Parkway, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification 141 Parkway, LLC Maryland 250 Charm City221, LLC Maryland 000 Xxxxxxxxx Xxxxxx, LLC Maryland 302 Sentinel, LLC Maryland 304 Sentinel, LLC Maryland 306 Sentinel, LLC Maryland 318 Sentinel, LLC Maryland 320 Sentinel, LLC Maryland 322 Sentinel, LLC Maryland 800 International, LLC Maryland 849 International, LLC Maryland 000 Xxxxxxxx Xxxxxxx, LLC Maryland 900 International, LLC Maryland 930 International, LLC Maryland 999 Corporate, LLC Maryland 1099 Winterson, LLC Maryland 1190 Winterson, LLC Maryland 1199 Winterson, LLC Maryland 1362 Mellon, LLC Maryland 0000 Xxxxxx Xxxx, LLC Maryland 1550 Nursery, LLC Maryland 2691 Technology, LLC Maryland 2701 Technology, LLC Maryland 2711 Technology, LLC Maryland 2720 Technology, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification 2730 Hercules, LLC Maryland 0000 Xxxx Xxxxxxxxx Xxxxx, LLC Maryland 2900 Towerview Road, LLC Virginia 5825 URC Borrower, LLC Maryland 5850 URC Borrower, LLC Maryland 6700 Xxxxxxxxx Xxxx, LLC Maryland 6711 CG, LLC Maryland 6711 Gateway, LLC Maryland 6711 Gateway Funding, LLC Maryland 6721 Gateway, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification 6721 CGD, LLC Maryland 6731 CG, LLC Maryland 6731 Gateway, LLC Maryland 6741 Gateway, LLC Maryland 6940 CGD, LLC Maryland 6950 CG, LLC Xxxxxxxx 0000 CG, LLC Xxxxxxxx 0000 Honeys, LLC Maryland 0000 Xxxxxxxx Xxxxxxx, LLC Maryland 7015 Xxxxxx Xxxxxxxx Drive, L.L.C. Maryland 0000 Xxxxxxxx Xxxxxxx, XXX Xxxxxxxx 0000-00 Riverwood, LLC Maryland 7200 Riverwood, LLC Maryland 7205 Riverwood, LLC Maryland 0000 Xxxxxxx Xxxxx Enterprises, LLC Maryland 0000 Xxxxxxx Xxxxx Enterprises, LLC Maryland 0000 Xxxxxxx Xxxxx Enterprises, LLC Maryland 7320 PD, LLC Maryland 0000 Xxxxxxxxxx Xxxx, LLC Maryland 7740 Milestone, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx8029 Corporate, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx8110 Corporate, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx8140 Corporate, LLC Maryland 8621 RFD, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification 8661 RFD, LLC Maryland 9020 Xxxxxxxxxx, LLC Maryland 0000 Xxxxxxx Xxxx, LLC Maryland 9965 Federal Drive0000 Xxxxxxx Xxxxx, XXX Xxxxxxxx 00000 Tech Road LLC Colorado Name Jurisdiction of Incorporation/Formation Foreign Qualification 45310 Delaware Maryland 00000 Xxxx Xxxxxx Xxxx, XXX Xxxxxxxx 00000 Abell House, LLC Maryland Associations for which a Subsidiary of the Company is “Developer” White Xxxxx Business Community Owners’ Association II, Inc. Maryland White Xxxxx Community Owners’ Association, Inc. Maryland SCHEDULE II SIGNIFICANT SUBSIDIARIES - MLB OPINION Corporate Development Services, LLC Corporate Office Management, Inc. Corporate Office Properties, L.P. COPT Property Management Services, LLC SCHEDULE III SIGNIFICANT SUBSIDIARIES — GENERAL COUNSEL OPINION Airport Square II, LLC Blue Xxxx Investment Company, L.P. Corporate Gatespring, LLC NBP One, LLC NBP 131, LLC NBP 135, LLC 7200 Riverwood, LLC SCHEDULE IVMaryland

Limited Liability Companies. ASI, LLC Maryland Aerotech Manager, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification Airport Square, LLC Maryland Airport Square II, LLC Maryland Airport Square IV, LLC Maryland Airport Square V, LLC Maryland Airport Square X, LLC Maryland Airport Square XI, LLC Maryland Airport Square XIII, LLC Maryland Airport Square XIV, LLC Maryland Airport Square XV, LLC Maryland Airport Square XIX, LLC Maryland Airport Square XX, LLC Maryland Airport Square XXI, LLC Maryland Airport Square XXII, LLC Maryland Airport Square Holdings I, LLC Delaware Maryland Airport Square Holdings VI and VII, LLC Delaware Maryland Airport Square Partners, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification Airport Square Storms, LLC Maryland AP#5 Lot A, LLC Maryland AP#5 Lot B, LLC Maryland AP#5 Lot CAmbassador Center, LLC Maryland Arundel Preserve #5, LLC Maryland Atrium Building, LLC Maryland Canton Crossing Retail, LLC Maryland Clarks Hundred, LLC Maryland Clarks Hundred II, LLC Maryland Colorado Land Acquisition, LLC Colorado Columbia Equity Finance, LLC Maryland Columbia Gateway S-28, L.L.C. Maryland Commons Office Research, LLC Maryland COMI Investments, LLC Maryland Commons Office 6-B, LLC Maryland Concourse 1304, LLC Maryland COPT Academy Ridge, LLC Colorado COPT Aberdeen, LLC Maryland COPT Aerotech, LLC Colorado COPT AP 9, LLC Maryland COPT Arundel Preserve, LLC Maryland COPT Baltimore County I, LLC Maryland COPT Baltimore County II, LLC Maryland COPT Bridge Street Office, LLC Alabama Name Jurisdiction of Incorporation/Formation Foreign Qualification COPT CC 1600, LLC Maryland COPT CC Bulkhead, LLC Maryland COPT CCW I, LLC Maryland COPT CCW II, LLC Maryland COPT CCW III, LLC Maryland COPT CC D1, LLC Maryland COPT CC Holding, LLC Maryland COPT CC Parking, LLC Maryland COPT CC Tower, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification COPT Chantilly, LLC Xxxxxxxx XXXX Chantilly II, LLC Xxxxxxxx XXXX Chantilly I Manager, LLC Maryland COPT Chantilly II Manager, LLC Maryland COPT Colgate General, LLC Delaware Maryland COPT Concourse, LLC Delaware Maryland COPT Connect, LLC Xxxxxxxx XXXX Cresterra 3535, LLC Colorado COPT Cresterra Master, LLC Colorado COPT Dahlgren, LLC Xxxxxxxx XXXX Dahlgren Xxxxxxxx I, LLC Xxxxxxxx XXXX Dahlgren II, LLC Xxxxxxxx XXXX Dahlgren IV, LLC Xxxxxxxx XXXX Dahlgren Land, LLC Xxxxxxxx XXXX Data Management, LLC Maryland COPT DC-6, LLC Delaware Xxxxxxxx XXXX DC-8, LLC Xxxxxxxx XXXX DC-11, LLC Xxxxxxxx XXXX DC-12, LLC Xxxxxxxx XXXX Development & Construction Services, LLC Maryland PA, VA, TX, AL, DC COPT FairviewEnvironmental Systems LLC Maryland COPT-FD Indian Head, LLC Xxxxxxxx Maryland XXXX Xxxxxxxxx, LLC Maryland COPT Gate 63, LLC Maryland COPT Gate 6700-6708-6724, LLC Maryland COPT Gateway Commerce, LLC Delaware Maryland COPT General, LLC Maryland COPT Greens I, LLC Xxxxxxxx XXXX Greens II, LLC Xxxxxxxx XXXX Greens III, LLC Xxxxxxxx XXXX Harbour’s Edge, LLC Maryland COPT Harrisburg GP, LLC Maryland Virginia Name Jurisdiction of Incorporation/Formation Foreign Qualification COPT Harbour’s Edge, LLC Maryland COPT Xxxx Valley GP, LLC Maryland COPT Huntsville, LLC Maryland COPT Indian Head, LLC Maryland COPT Interquest, LLC Colorado COPT Interquest III, LLC Colorado COPT Interquest IV, LLC Colorado COPT Interquest Epic I, LLC Colorado COPT Interquest Hybrid I, LLC Colorado COPT Interquest Hybrid II, LLC Colorado COPT-Xxxx XX#5, LLC Maryland COPT Maritime I & II, LLC Delaware DC COPT XxXxxxxxMontpelier, LLC Xxxxxxxx XXXX Metro Place II, LLC Xxxxxxxx XXXX Maryland COPT Newport, LLC Colorado COPT Newport C, LLC Colorado COPT Newport D, LLC Colorado COPT Northcreek, LLC Colorado COPT Northgate A, LLC Maryland COPT Northgate B, LLC Maryland COPT Northgate C, LLC Maryland COPT Northgate D, LLC Maryland COPT Northgate H, LLC Maryland COPT Northgate I, LLC Maryland COPT Opportunity Invest I, LLC Maryland COPT Powerhouse, LLC Maryland COPT Park Meadow, LLC Xxxxxxxx XXXX Parkstone, LLC Xxxxxxxx XXXX Patriot Park I, LLC Colorado COPT Patriot Park II, LLC Colorado COPT Patriot Park V, LLC Colorado COPT Patriot Park VI, LLC Colorado COPT Patriot Park VII, LLC Colorado COPT Patriot Park at Galley, LLC Colorado COPT Pres Investment, LLC Maryland COPT Property Management Services, LLC Maryland DC, VA, DE, PA, NJ, TX, AL COPT Princeton South, LLC New Jersey Name Jurisdiction of Incorporation/Formation Foreign Qualification PA, TX, AL COPT Renovation, LLC Maryland COPT Richmond I, LLC Xxxxxxxx XXXX Ridgeview I, LLC Xxxxxxxx XXXX Ridgeview II & III, LLC Xxxxxxxx XXXX Riverwood, LLC Maryland COPT San Antonio General, LLC Texas COPT Southwest VA, LLC Xxxxxxxx XXXX Sunrise, LLC Xxxxxxxx XXXX Stonecroft, LLC Xxxxxxxx XXXX T-11, LLC Maryland COPT Virtru, LLC Maryland COPT Waterview I, LLC Xxxxxxxx XXXX Waterview III, LLC Xxxxxxxx XXXX Westbranch, LLC Virginia Cornucopia Holdings, LLC Maryland Cornucopia Holdings II, LLC Maryland Corporate Center I, LLC Maryland Corporate Development Services, LLC Maryland VA Corporate Gatespring, LLC Maryland Corporate Gatespring II, LLC Maryland Corporate Office Services, LLC Maryland Corporate Paragon, LLC Maryland Corporate Place B Equity Affiliates, LLC Maryland Corporate Property, LLC Maryland Crown Point, L.L.C. Delaware Maryland Delaware Airport III, LLC Delaware Maryland Delaware Airport VIII, LLC Delaware Maryland Delaware Airport IX, LLC Delaware Maryland Enterprise Campus Developer, LLC Maryland Fifth Exploration, L.L.C. Maryland Ft. Xxxxxxx I, LLC Maryland Ft. Xxxxxxx XX, LLC Maryland Ft. Xxxxxxx III, LLC Maryland Ft. Xxxxxxx XX, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification Ft. Xxxxxxx Holding, LLC Maryland Fourth Exploration, L.L.C. Maryland Gateway Crossing 95, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification Gateway 44, LLC Maryland Gateway 67, LLC Maryland Gateway 70, LLC Maryland Gateway 70 Holdings, LLC Maryland Governors Court, LLC Maryland Governors Court 21, LLC Maryland Great Xxxxx I, L.L.C. Delaware Great Xxxxx II, L.L.C. Delaware Great Xxxxx III, L.L.C. Delaware Great Xxxxx IV, L.L.C. Delaware Maryland Great Xxxxx V, L.L.C. Delaware Maryland Harrisburg Investors II, LLC Delaware Harrisburg Investors III, LLC Delaware Honeyland 108, LLC Maryland Huntsville Holdings, LLC Maryland Jolly COPT I, LLC Maryland Jolly COPT II, LLC Maryland XX Xxxxxxxx Company, LLC Delaware AL Maritime Holdings, LLC Maryland M Square Associates, LLC Maryland M Square NOAA, LLC Maryland M Square 5825, LLC Maryland M Square 5850, LLC Maryland MOR Forbes, LLC Maryland MOR Forbes 2, LLC Maryland NBP One, LLC Maryland NBP Xxxx & Puff, LLC Maryland NBP Lot 3-A, LLC Maryland NBP Retail, LLC Maryland NBP 131, LLC Maryland NBP 132, LLC Maryland NBP 133, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification NBP 134, LLC Maryland NBP 135, LLC Maryland NBP 140, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification NBP 141, LLC Maryland NBP 191, LLC Maryland NBP 201, LLC Maryland NBP 201 Holdings, LLC Maryland NBP 211, LLC Maryland NBP 211 Holdings, LLC Maryland NBP 220, LLC Maryland NBP 220 Holdings, LLC Maryland NBP 221, LLC Maryland NBP 300, LLC Maryland NBP 302, LLC Maryland NBP 304, LLC Maryland NBP 306, LLC Maryland NBP 308, LLC Maryland NBP 310, LLC Maryland NBP 312, LLC Maryland NBP 314, LLC Maryland NBP 316, LLC Maryland NBP 318, LLC Maryland NBP 320, LLC Maryland NBP 322, LLC Maryland NBP 324, LLC Maryland NBP 410, LLC Maryland NBP 420, LLC Maryland NBP 430, LLC Maryland NBP 520, LLC Maryland NBP 540, LLC Maryland Northcreek Manager, LLC Maryland One Xxxxxxx RoadNottingham Center, LLC Maryland Opportunity Invest Ventures, LLC Delaware Park Circle Equities, LLC Maryland Patriot Park, L.L.C. LLC. Colorado Patriot Ridge I, LLC Virginia Patriot Ridge II, LLC Virginia Name Jurisdiction of Incorporation/Formation Foreign Qualification Patriot Ridge CommonsIII, LLC Virginia Patriot Ridge Holdings, LLC Virginia Patriot Ridge 7770, LLC Virigina Name Jurisdiction of Incorporation/Formation Foreign Qualification Pecan Court L.L.C. Maryland Powerloft @ Innovation I, LLC Delaware VA Powerloft Holdings, LLC Delaware Powerloft Services, LLC Delaware VA Professional Center I, LLC Maryland Professional Center III, LLC Maryland Red Cedar Building, LLC Maryland Redstone Gateway 1000RIVA Trustee, LLC Delaware XX Xxxxxxxx Gateway 1100, LLC Delaware XX Xxxxxxxx Gateway 1200, LLC Delaware XX Xxxxxxxx Gateway 2100, LLC Delaware XX Xxxxxxxx Gateway 6500, LLC Delaware XX Xxxxxxxx Gateway 7200, LLC Delaware AL RIVA TrusteeMaryland Rivers Center III Investors, LLC Maryland Riverwood Business Center Equity Affiliates, LLC Maryland Rockville Corporate Center, LLC Maryland Xxxxxxxxx 216 Investors, LLC Maryland Xxxxxxxxx Center Equities, LLC Maryland Sterling York, LLC Delaware Maryland Tech Park I, LLC Maryland Tech Park II, LLC Maryland Tech Park IV, LLC Maryland Third Exploration L.L.C. Maryland Towerview, LLC Virginia TRC Pinnacle Towers, L.L.C. Xxxxxxxx Xxxxx Ridge I, LLC Maryland White Xxxxx Business Center, LLC Maryland White Xxxxx Professional Center II, LLC Maryland Xxxxx Investors, LLC Maryland WMBC 13A Investment Company, LLC Maryland 67 Financing LLC Maryland 110 Xxxxxx Xxxxxxx, LLC Maryland 131 Parkway, LLC Maryland 132, LLC Maryland 133 Parkway, LLC Maryland 134, LLC Maryland 135 Parkway, LLC Maryland 141 Parkway, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification 141 Parkway221, LLC Maryland 250 Charm City000 Xxxxxxxxx Xxxxxx, LLC Maryland 302 Sentinel, LLC Maryland 304 Sentinel, LLC Maryland 306 Sentinel, LLC Maryland 318 Sentinel, LLC Maryland 320 Sentinel, LLC Maryland 322 Sentinel, LLC Maryland 800 International, LLC Maryland 849 International, LLC Maryland 000 Xxxxxxxx Xxxxxxx, LLC Maryland 900 International, LLC Maryland 930 International, LLC Maryland 999 Corporate, LLC Maryland 1099 Winterson, LLC Maryland 1190 Winterson, LLC Maryland 1199 Winterson, LLC Maryland 1362 Mellon, LLC Maryland 0000 Xxxxxx Xxxx, LLC Maryland 1550 Nursery, LLC Maryland 2691 Technology, LLC Maryland 2701 Technology, LLC Maryland 2711 Technology, LLC Maryland 2720 Technology, LLC Maryland 2730 Hercules, LLC Maryland 0000 Xxxx Xxxxxxxxx Xxxxx, LLC Maryland 2900 Towerview Road, LLC Virginia 5825 URC Borrower, LLC Maryland 5850 URC Borrower, LLC Maryland 6700 Xxxxxxxxx Xxxx, LLC Maryland 6711 CG, LLC Maryland 6711 Gateway, LLC Maryland 6711 Gateway Funding, LLC Maryland 6721 Gateway, LLC Maryland Name Jurisdiction of Incorporation/Formation Foreign Qualification 6721 Gateway, LLC Maryland 6721 CGD, LLC Maryland 6731 CG, LLC Maryland 6731 Gateway, LLC Maryland 6741 Gateway, LLC Maryland 6940 CGD, ,LLC Maryland 6950 CG, LLC Xxxxxxxx 0000 CG, LLC Xxxxxxxx 0000 Honeys, LLC Maryland 0000 Xxxxxxxx Xxxxxxx, LLC Maryland 7015 Xxxxxx Xxxxxxxx Drive, L.L.C. Maryland 0000 Xxxxxxxx Xxxxxxx, XXX Xxxxxxxx 0000-00 Riverwood, LLC Maryland 7200 Riverwood, LLC Maryland 7205 Riverwood, LLC Maryland 0000 Xxxxxxxxxx Xxxx, LLC Maryland 0000 Xxxxxxx Xxxxx Enterprises, LLC Maryland 0000 Xxxxxxx Xxxxx Enterprises, LLC Maryland 0000 Xxxxxxx Xxxxx Enterprises, LLC Maryland 7320 PD, LLC Maryland 0000 Xxxxxxxxxx Xxxx, LLC Maryland 7740 Milestone, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx8029 Corporate, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx8110 Corporate, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx, LLC Maryland 0000 Xxxxxxxxx Xxxxxxx8140 Corporate, LLC Maryland 8621 RFD, LLC Maryland 8661 RFD, LLC Maryland 9020 Xxxxxxxxxx, LLC Maryland 0000 Xxxxxxx Xxxx, LLC Maryland 9965 Federal Drive0000 Xxxxxxx Xxxxx, XXX Xxxxxxxx 00000 XxXxxxxxx Road, LLC Colorado Maryland 00000 XxXxxxxxx Xxxx, LLC Maryland 11800 Tech Road LLC Delaware Maryland 13849 Park Center Road, LLC Virginia Name Jurisdiction of Incorporation/Formation Foreign Qualification 45310 Abell House, LLC Maryland Associations for which a Subsidiary of the Company is “Developer” White Xxxxx Business Community Owners’ Owners Inc. Association II, Inc. II Maryland White Xxxxx Community Owners’ Owners Association, Inc. Maryland SCHEDULE II SIGNIFICANT SUBSIDIARIES - MLB OPINION Corporate Development ServicesV MATERIAL DOCUMENTS Second Amended and Restated Limited Partnership Agreement of the Operating Partnership, LLC Corporate Office Managementdated December 7, Inc. Corporate Office Properties1999 (filed with the Company’s Annual Report on Form 10-K on March 16, L.P. COPT Property Management Services2000). Second Amendment to Second Amended and Restated Limited Partnership Agreement of the Operating Partnership, LLC SCHEDULE III SIGNIFICANT SUBSIDIARIES — GENERAL COUNSEL OPINION Airport Square IIdated December 21, LLC Blue Xxxx Investment 1999 (filed with the Company’s Post Effective Amendment No. 2 to Form S-3, L.P. Corporate Gatespringdated November 1, LLC NBP One2000 (Registration Statement No. 333-71807)). Third Amendment to Second Amended and Restated Limited Partnership Agreement of the Operating Partnership, LLC NBP 131dated September 29, LLC NBP 1352000 (filed with the Company’s Post Effective Amendment No. 2 to Form S-3, LLC 7200 Riverwooddated November 1, LLC SCHEDULE IV2000 (Registration Statement No. 333-71807)). Fourth Amendment to Second Amended and Restated Limited Partnership Agreement of the Operating Partnership, dated November 27, 2000 (filed with the Company’s Annual Report on Form 10-K on March 27, 2003). Fifth Amendment to Second Amended and Restated Limited Partnership Agreement of the Operating Partnership, dated January 25, 2001 (filed with the Company’s Annual Report on Form 10-K on March 27, 2003).