Document

The Company: Corporate Office Properties Trust (the “Company” or “COPT”) is a self-managed office real estate investment trust (“REIT”). COPT is listed on the New York Stock Exchange under the symbol “OFC” and is a S&P MidCap 400 Company. We own, manage, lease, develop and selectively acquire office and data center properties. The majority of our portfolio is in locations that support United States Government agencies and their contractors, most of whom are engaged in national security, defense and information technology (“IT”) related activities servicing what we believe are growing, durable priority missions; we refer to these properties as Defense/IT Locations (sometimes also referred to as “Mission-Centric”). We also own a portfolio of office properties located in select urban/urban-like submarkets within our regional footprint with durable Class-A office fundamentals and characteristics; these properties are included in a segment referred to as Regional Office Properties (sometimes also referred to as “Urban-Centric”). As of December 31, 2016, we derived 87% of our core portfolio annualized revenue from Defense/IT Locations and 13% from our Regional Office Properties. As of December 31, 2016, our core portfolio of 152 office properties, including six owned through an unconsolidated joint venture, encompassed 16.3 million square feet and was 94.4% leased. As of the same date, we also owned a wholesale data center with a critical load of 19.25 megawatts in operations.

Disclosure Statement: This supplemental package contains forward-looking statements within the meaning of the Federal securities laws. Forward-looking statements can be identified by the use of words such as “may,” “will,” “should,” “could,” “believe,” “anticipate,” “expect,” “estimate,” “plan” or other comparable terminology. Forward-looking statements are inherently subject to risks and uncertainties, many of which we cannot predict with accuracy and some of which we might not even anticipate. Although we believe that the expectations, estimates and projections reflected in such forward-looking statements are based on reasonable assumptions at the time made, we can give no assurance that these expectations, estimates and projections will be achieved. Future events and actual results may differ materially from those discussed in the forward-looking statements. Important factors that may affect these expectations, estimates and projections include, but are not limited to: general economic and business conditions, which will, among other things, affect office property and data center demand and rents, tenant creditworthiness, interest rates, financing availability and property values; adverse changes in the real estate markets, including, among other things, increased competition with other companies; governmental actions and initiatives, including risks associated with the impact of a prolonged government shutdown or budgetary reductions or impasses, such as a reduction in rental revenues, non-renewal of leases and/or a curtailment of demand for additional space by our strategic customers; our ability to borrow on favorable terms; risks of real estate acquisition and development activities, including, among other things, risks that development projects may not be completed on schedule, that tenants may not take occupancy or pay rent or that development or operating costs may be greater than anticipated; risks of investing through joint venture structures, including risks that our joint venture partners may not fulfill their financial obligations as investors or may take actions that are inconsistent with our objectives; changes in our plans for properties or views of market economic conditions or failure to obtain development rights, either of which could result in recognition of impairment losses; our ability to satisfy and operate effectively under Federal income tax rules relating to real estate investment trusts and partnerships; the dilutive effects of issuing additional common shares; our ability to achieve projected results; and environmental requirements. We undertake no obligation to update or supplement any forward-looking statements. For further information, please refer to our filings with the Securities and Exchange Commission, particularly the section entitled “Risk Factors” in Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2015.




Firm	Senior Analyst	Phone	Email
Bank of America Merrill Lynch	Jamie Feldman	646-855-5808	james.feldman@baml.com
BTIG	Tom Catherwood	212-738-6410	tcatherwood@btig.com
Capital One Securities	Chris Lucas	571-633-8151	christopher.lucas@capitalone.com
Citigroup Global Markets	Manny Korchman	212-816-1382	emmanuel.korchman@citi.com
Evercore ISI	Steve Sakwa	212-446-9462	steve.sakwa@evercoreisi.com
Green Street Advisors	Jed Reagan	949-640-8780	jreagan@greenstreetadvisors.com
Jefferies & Co.	Jonathan Petersen	212-284-1705	jpetersen@jefferies.com
JP Morgan	Tony Paolone	212-622-6682	anthony.paolone@jpmorgan.com
KeyBanc Capital Markets	Craig Mailman	917-368-2316	cmailman@key.com
Mizuho Securities USA Inc.	Richard Anderson	212-205-8445	richard.anderson@us.mizuho-sc.com
Raymond James	Bill Crow	727-567-2594	bill.crow@raymondjames.com
Robert W. Baird & Co., Inc.	Dave Rodgers	216-737-7341	drodgers@rwbaird.com
Stifel Financial Corp.	John Guinee	443-224-1307	jwguinee@stifel.com
SunTrust Robinson Humphrey, Inc.	Michael Lewis	212-319-5659	michael.lewis@suntrust.com



	Page	Three Months Ended															Year Ended
SUMMARY OF RESULTS	Refer.	12/31/16			9/30/16			6/30/16			3/31/16			12/31/15			12/31/16			12/31/15
Net income (loss)	6	$	26,603		$	29,272		$	(48,316	)	$	8,096		$	62,617		$	15,655		$	188,878
NOI from real estate operations	14	$	81,734		$	82,010		$	85,783		$	81,212		$	85,979		$	330,739		$	324,580
Same Office Property NOI	16	$	63,861		$	61,924		$	61,896		$	59,788		$	61,914		$	247,469		$	243,525
Same Office Property Cash NOI	17	$	63,938		$	61,629		$	62,083		$	60,055		$	61,359		$	247,705		$	237,860
Adjusted EBITDA	10	$	76,781		$	76,834		$	79,625		$	74,906		$	79,718		$	308,146		$	299,867
Diluted AFFO avail. to common share and unit holders	9	$	40,717		$	37,998		$	42,937		$	36,835		$	31,592		$	158,487		$	146,698
Dividend per common share	N/A	$	0.275		$	0.275		$	0.275		$	0.275		$	0.275		$	1.100		$	1.100

Per share - diluted:
EPS	8	$	0.22		$	0.25		$	(0.54	)	$	0.03		$	0.59		$	(0.03	)	$	1.74
FFO - NAREIT	8	$	0.57		$	0.49		$	0.36		$	0.39		$	0.31		$	1.82		$	2.55
FFO - as adjusted for comparability	8	$	0.51		$	0.51		$	0.52		$	0.47		$	0.52		$	2.01		$	2.01

Numerators for diluted per share amounts:
Diluted EPS	6	$	20,976		$	23,642		$	(51,068	)	$	3,156		$	55,581		$	(3,294	)	$	169,787
Diluted FFO available to common share and unit holders	7	$	56,558		$	48,449		$	35,194		$	38,560		$	30,488		$	178,761		$	249,454
Diluted FFO available to common share and unit holders, as adjusted for comparability	7	$	50,219		$	50,461		$	50,630		$	46,007		$	50,858		$	197,317		$	195,824

Payout ratios:
Diluted FFO	N/A	49.5		%	55.6		%	76.6		%	69.8		%	88.3		%	60.9		%	43.1		%
Diluted FFO - as adjusted for comparability	N/A	55.7		%	53.4		%	53.2		%	58.5		%	52.9		%	55.1		%	54.9		%
Diluted AFFO	N/A	68.7		%	70.9		%	62.7		%	73.1		%	85.2		%	68.6		%	73.3		%

CAPITALIZATION
Total Market Capitalization	28	$	5,315,331		$	4,887,466		$	5,228,793		$	4,947,152		$	4,449,015
Total Equity Market Capitalization	28	$	3,395,102		$	2,996,247		$	3,116,093		$	2,788,272		$	2,351,785
Gross debt	29	$	1,950,229		$	1,921,219		$	2,112,700		$	2,158,880		$	2,097,230
Net debt to adjusted book	31	38.3		%	41.2		%	43.6		%	43.3		%	42.6		%	N/A			N/A
Net debt plus preferred equity to adjusted book	31	42.9		%	45.8		%	48.0		%	47.6		%	47.0		%	N/A			N/A
Adjusted EBITDA fixed charge coverage ratio	31	3.1		x	3.1		x	2.9		x	2.7		x	2.9		x	3.0		x	3.0		x
Net debt to in-place adjusted EBITDA ratio	31	5.7		x	6.3		x	6.6		x	7.0		x	6.5		x	N/A			N/A
Net debt plus pref. equity to in-place adj. EBITDA ratio	31	6.3		x	7.0		x	7.2		x	7.6		x	7.2		x	N/A			N/A

OTHER
Revenue from early termination of leases	N/A	$	794		$	437		$	338		$	712		$	400		$	2,281		$	1,823
Capitalized interest costs	N/A	$	1,419		$	1,242		$	1,309		$	1,753		$	1,510		$	5,723		$	7,151




	12/31/16		9/30/16		6/30/16		3/31/16		12/31/15
	(1)
# of Operating Office Properties
Total Portfolio	164		168		181		179		177
Consolidated Portfolio	158		162		181		179		177
Core Portfolio	152		146		146		153		157
Same Office Properties	133		133		133		133		133

% Occupied
Total Portfolio	92.1	%	91.3	%	92.6	%	92.3	%	91.6	%
Consolidated Portfolio	91.6	%	90.8	%	92.6	%	92.3	%	91.6	%
Core Portfolio	92.9	%	93.0	%	92.3	%	91.6	%	92.7	%
Same Office Properties	91.5	%	91.3	%	90.9	%	90.6	%	91.5	%

% Leased
Total Portfolio	93.5	%	92.8	%	92.6	%	92.3	%	92.7	%
Consolidated Portfolio	93.1	%	92.4	%	92.6	%	92.3	%	92.7	%
Core Portfolio	94.4	%	94.4	%	93.8	%	93.3	%	93.9	%
Same Office Properties	92.8	%	93.1	%	92.6	%	92.4	%	92.8	%

Square Feet of Office Properties (in thousands)
Total Portfolio	17,190		17,488		18,402		18,250		18,053
Consolidated Portfolio	16,228		16,526		18,402		18,250		18,053
Core Portfolio	16,301		15,938		16,018		16,556		17,038
Same Office Properties	13,249		13,249		13,249		13,249		13,249

Wholesale Data Center (in megawatts (“MWs”))
Initial Stabilization Critical Load	19.25		19.25		19.25		19.25		19.25
MWs Leased (2)	14.86		15.81		15.81		16.81		17.81
MWs Operational	19.25		19.25		19.25		19.25		19.25



	12/31/16			9/30/16			6/30/16			3/31/16			12/31/15
Assets
Properties, net
Operating properties, net	$	2,671,831		$	2,632,069		$	2,782,330		$	2,863,262		$	2,920,529
Construction and redevelopment in progress, including land (1)	86,323			72,043			69,070			98,198			137,043
Land held (1)	315,208			324,226			318,327			317,971			292,176
Total properties, net	3,073,362			3,028,338			3,169,727			3,279,431			3,349,748
Assets held for sale	94,654			161,454			300,584			225,897			96,782
Cash and cash equivalents	209,863			47,574			13,317			62,489			60,310
Restricted cash and marketable securities	8,193			7,583			8,302			7,763			7,716
Investment in unconsolidated real estate joint venture	25,548			25,721			—			—			—
Accounts receivable, net	34,438			25,790			32,505			28,776			29,167
Deferred rent receivable, net	90,219			87,526			92,316			96,936			105,484
Intangible assets on real estate acquisitions, net	78,351			84,081			88,788			93,526			98,338
Deferred leasing costs, net	41,214			41,470			42,632			44,768			53,868
Investing receivables	52,279			51,119			50,162			48,998			47,875
Prepaid expenses and other assets, net	72,764			73,538			43,359			49,324			60,024
Total assets	$	3,780,885		$	3,634,194		$	3,841,692		$	3,937,908		$	3,909,312
Liabilities and equity
Liabilities:
Debt	$	1,904,001		$	1,873,836		$	2,094,486		$	2,140,212		$	2,077,752
Accounts payable and accrued expenses	108,682			112,306			92,848			78,597			91,755
Rents received in advance and security deposits	29,798			28,740			32,035			33,457			37,148
Dividends and distributions payable	31,335			30,225			30,219			30,217			30,178
Deferred revenue associated with operating leases	12,666			9,898			17,560			19,093			19,758
Interest rate derivatives	1,572			17,272			20,245			15,072			3,160
Redeemable preferred shares at liquidation preference (2)	26,583			—			—			—			—
Other liabilities	48,605			38,282			31,123			15,046			13,779
Total liabilities	2,163,242			2,110,559			2,318,516			2,331,694			2,273,530
Redeemable noncontrolling interests	22,979			22,848			22,473			22,333			19,218
Equity:
COPT’s shareholders’ equity:
Preferred shares at liquidation preference	172,500			199,083			199,083			199,083			199,083
Common shares	985			948			947			947			945
Additional paid-in capital	2,116,581			2,008,787			2,007,328			2,005,523			2,004,507
Cumulative distributions in excess of net income	(765,276		)	(759,262		)	(756,940		)	(679,935		)	(657,172		)
Accumulated other comprehensive loss	(1,731		)	(16,314		)	(17,712		)	(12,862		)	(2,838		)
Total COPT’s shareholders’ equity	1,523,059			1,433,242			1,432,706			1,512,756			1,544,525
Noncontrolling interests in subsidiaries
Common units in the Operating Partnership	49,228			46,757			47,550			51,031			52,359
Preferred units in the Operating Partnership	8,800			8,800			8,800			8,800			8,800
Other consolidated entities	13,577			11,988			11,647			11,294			10,880
Total noncontrolling interests in subsidiaries	71,605			67,545			67,997			71,125			72,039
Total equity	1,594,664			1,500,787			1,500,703			1,583,881			1,616,564
Total liabilities, redeemable noncontrolling interest and equity	$	3,780,885		$	3,634,194		$	3,841,692		$	3,937,908		$	3,909,312



	Three Months Ended															Year Ended
	12/31/16			9/30/16			6/30/16			3/31/16			12/31/15			12/31/16			12/31/15
Revenues
Rental revenue	$	100,849		$	103,956		$	107,524		$	105,382		$	107,514		$	417,711		$	420,340
Tenant recoveries and other real estate operations revenue	27,150			26,998			26,400			27,705			26,963			108,253			98,724
Construction contract and other service revenues	13,992			11,149			12,003			11,220			8,848			48,364			106,402
Total revenues	141,991			142,103			145,927			144,307			143,325			574,328			625,466
Expenses
Property operating expenses	47,562			49,952			48,141			51,875			48,498			197,530			194,494
Depreciation and amortization associated with real estate operations	32,929			32,015			33,248			34,527			36,237			132,719			140,025
Construction contract and other service expenses	12,968			10,341			11,478			10,694			7,773			45,481			102,696
Impairment losses	1,554			27,699			69,692			2,446			19,744			101,391			23,289
General and administrative expenses	6,211			7,242			6,512			10,130			6,609			30,095			24,526
Leasing expenses	1,578			1,613			1,514			1,753			1,888			6,458			6,835
Business development expenses and land carry costs	1,747			1,716			2,363			2,418			2,521			8,244			13,507
Total operating expenses	104,549			130,578			172,948			113,843			123,270			521,918			505,372
Operating income	37,442			11,525			(27,021		)	30,464			20,055			52,410			120,094
Interest expense	(18,664		)	(18,301		)	(22,639		)	(23,559		)	(22,347		)	(83,163		)	(89,074		)
Interest and other income	1,567			1,391			1,330			1,156			1,300			5,444			4,517
(Loss) gain on early extinguishment of debt	(1,073		)	(59		)	5			17			(402		)	(1,110		)	85,275
Income (loss) from continuing operations before equity in income of unconsolidated entities and income taxes	19,272			(5,444		)	(48,325		)	8,078			(1,394		)	(26,419		)	120,812
Equity in income of unconsolidated entities	718			594			10			10			10			1,332			62
Income tax (expense) benefit	(272		)	21			(1		)	8			(46		)	(244		)	(199		)
Income (loss) from continuing operations	19,718			(4,829		)	(48,316		)	8,096			(1,430		)	(25,331		)	120,675
Discontinued operations	—			—			—			—			—			—			156
Income (loss) before gain on sales of real estate	19,718			(4,829		)	(48,316		)	8,096			(1,430		)	(25,331		)	120,831
Gain on sales of real estate	6,885			34,101			—			—			64,047			40,986			68,047
Net income (loss)	26,603			29,272			(48,316		)	8,096			62,617			15,655			188,878
Net (income) loss attributable to noncontrolling interests
Common units in the Operating Partnership	(793		)	(901		)	1,976			(127		)	(2,172		)	155			(6,403		)
Preferred units in the Operating Partnership	(165		)	(165		)	(165		)	(165		)	(165		)	(660		)	(660		)
Other consolidated entities	(912		)	(907		)	(914		)	(978		)	(916		)	(3,711		)	(3,515		)
Net income (loss) attributable to COPT	24,733			27,299			(47,419		)	6,826			59,364			11,439			178,300
Preferred share dividends	(3,640		)	(3,552		)	(3,553		)	(3,552		)	(3,553		)	(14,297		)	(14,210		)
Issuance costs associated with redeemed preferred shares	(17		)	—			—			—			—			(17		)	—
Net income (loss) attributable to COPT common shareholders	$	21,076		$	23,747		$	(50,972	)	$	3,274		$	55,811		$	(2,875	)	$	164,090
Common units in the Operating Partnership	—			—			—			—			—			—			6,403
Amount allocable to share-based compensation awards	(100		)	(105		)	(96		)	(118		)	(230		)	(419		)	(706		)
Numerator for diluted EPS	$	20,976		$	23,642		$	(51,068	)	$	3,156		$	55,581		$	(3,294	)	$	169,787



	Three Months Ended															Year Ended
	12/31/16			9/30/16			6/30/16			3/31/16			12/31/15			12/31/16			12/31/15
Net income (loss)	$	26,603		$	29,272		$	(48,316	)	$	8,096		$	62,617		$	15,655		$	188,878
Real estate-related depreciation and amortization	32,929			32,015			33,248			34,527			36,237			132,719			140,025
Impairment losses on previously depreciated operating properties	1,518			25,857			55,124			847			331			83,346			4,110
Gain on sales of previously depreciated operating properties	312			(34,101		)	—			—			(64,047		)	(33,789		)	(64,062		)
Depreciation and amortization on unconsolidated real estate JV (1)	311			207			—			—			—			518			—
FFO - per NAREIT (2)(3)	61,673			53,250			40,056			43,470			35,138			198,449			268,951
Preferred share dividends	(3,640		)	(3,552		)	(3,553		)	(3,552		)	(3,553		)	(14,297		)	(14,210		)
Issuance costs associated with redeemed preferred shares	(17		)	—			—			—			—			(17		)	—
Noncontrolling interests - preferred units in the Operating Partnership	(165		)	(165		)	(165		)	(165		)	(165		)	(660		)	(660		)
FFO allocable to other noncontrolling interests (4)	(1,085		)	(894		)	(1,014		)	(1,027		)	(817		)	(4,020		)	(3,586		)
Basic and diluted FFO allocable to share-based compensation awards	(208		)	(190		)	(130		)	(166		)	(115		)	(694		)	(1,041		)
Basic and Diluted FFO available to common share and common unit holders (3)	56,558			48,449			35,194			38,560			30,488			178,761			249,454
Operating property acquisition costs	—			—			—			—			32			—			4,134
Gain on sales of non-operating properties	(7,197		)	—			—			—			—			(7,197		)	(3,985		)
Impairment losses on non-operating properties	36			1,842			14,568			1,599			19,413			18,045			19,413
(Gain) loss on interest rate derivatives	(725		)	(1,523		)	319			1,551			386			(378		)	386
Loss (gain) on early extinguishment of debt	1,073			59			(5		)	(17		)	402			1,110			(85,655		)
Issuance costs associated with redeemed preferred shares	17			—			—			—			—			17			—
Add: Negative FFO of properties conveyed to extinguish debt in default (5)	—			—			—			—			—			—			10,456
Demolition costs on redevelopment properties	—			—			370			208			225			578			1,396
Executive transition costs	431			1,639			247			4,137			—			6,454			—
Diluted FFO comparability adjustments allocable to share-based compensation awards	26			(5		)	(63		)	(31		)	(88		)	(73		)	225
Diluted FFO avail. to common share and common unit holders, as adj. for comparability (3)	$	50,219		$	50,461		$	50,630		$	46,007		$	50,858		$	197,317		$	195,824

(1) FFO adjustment pertaining to COPT’s share of an unconsolidated real estate joint venture reported on page 33.
(2) Please see reconciliation on page 35 for components of FFO per NAREIT.
(3) Please refer to the section entitled “Definitions” for a definition of this measure.
(4) Pertains to noncontrolling interests in consolidated real estate joint ventures reported on page 32.
(5) Interest expense exceeded NOI from these properties by the amounts in the statement.



	Three Months Ended															Year Ended
	12/31/16			9/30/16			6/30/16			3/31/16			12/31/15			12/31/16			12/31/15
EPS Denominator:
Weighted average common shares - basic	95,066			94,433			94,300			94,203			94,164			94,502			93,914
Common units in the Operating Partnership	—			—			—			—			—			—			3,692
Dilutive effect of share-based compensation awards	76			81			—			95			—			—			61
Weighted average common shares - diluted	95,142			94,514			94,300			94,298			94,164			94,502			97,667
Diluted EPS	$	0.22		$	0.25		$	(0.54	)	$	0.03		$	0.59		$	(0.03	)	$	1.74

Weighted Average Shares for period ended:
Common Shares Outstanding	95,066			94,433			94,300			94,203			94,164			94,502			93,914
Dilutive effect of share-based compensation awards	76			81			117			95			—			92			61
Common Units	3,591			3,591			3,676			3,677			3,677			3,633			3,692
Denominator for diluted FFO per share and as adjusted for comparability	98,733			98,105			98,093			97,975			97,841			98,227			97,667
Weighted average common units	(3,591		)	(3,591		)	(3,676		)	(3,677		)	(3,677		)	(3,633		)	—
Anti-dilutive EPS effect of share-based compensation awards	—			—			(117		)	—			—			(92		)	—
Denominator for diluted EPS	95,142			94,514			94,300			94,298			94,164			94,502			97,667
Diluted FFO per share - NAREIT	$	0.57		$	0.49		$	0.36		$	0.39		$	0.31		$	1.82		$	2.55
Diluted FFO per share - as adjusted for comparability	$	0.51		$	0.51		$	0.52		$	0.47		$	0.52		$	2.01		$	2.01




	Three Months Ended															Year Ended
	12/31/16			9/30/16			6/30/16			3/31/16			12/31/15			12/31/16			12/31/15
Diluted FFO available to common share and common unit holders, as adjusted for comparability	$	50,219		$	50,461		$	50,630		$	46,007		$	50,858		$	197,317		$	195,824
Straight line rent adjustments and lease incentive amortization	1,294			691			480			(965		)	(2,677		)	1,500			(13,497		)
Straight line rent adjustments on properties conveyed to extinguish debt in default	—			—			—			—			—			—			(115		)
Amortization of intangibles included in NOI	463			349			338			338			365			1,488			1,428
Share-based compensation, net of amounts capitalized	1,174			1,258			1,485			1,632			1,625			5,549			6,574
Amortization of deferred financing costs	1,093			1,126			1,178			1,176			1,127			4,573			4,466
Amortization of net debt discounts, net of amounts capitalized	336			332			325			319			317			1,312			1,166
Replacement capital expenditures (1)	(13,716		)	(16,120		)	(11,546		)	(11,720		)	(20,086		)	(53,102		)	(49,266		)
Diluted AFFO adjustments allocable to other noncontrolling interests (2)	42			42			47			48			63			179			118
Diluted AFFO adjustments on unconsolidated real estate JV (3)	(188		)	(141		)	—			—			—			(329		)	—
Diluted AFFO available to common share and common unit holders (“diluted AFFO”)	$	40,717		$	37,998		$	42,937		$	36,835		$	31,592		$	158,487		$	146,698
Replacement capital expenditures (1)
Tenant improvements and incentives	$	8,000		$	21,470		$	6,784		$	8,766		$	6,836		$	45,020		$	24,244
Building improvements	7,064			5,707			5,302			3,953			16,674			22,026			28,643
Leasing costs	1,387			5,182			1,613			1,183			3,518			9,365			8,504
Less: Excluded tenant improvements and incentives	871			(12,706		)	(885		)	(1,353		)	(393		)	(14,073		)	(1,438		)
Less: Excluded building improvements	(3,606		)	(3,533		)	(1,121		)	(557		)	(6,551		)	(8,817		)	(9,879		)
Less: Excluded leasing costs	—			—			(147		)	(272		)	2			(419		)	(808		)
Replacement capital expenditures	$	13,716		$	16,120		$	11,546		$	11,720		$	20,086		$	53,102		$	49,266

(1) Please refer to the section entitled “Definitions” for a definition of this measure.
(2) AFFO adjustments pertaining to noncontrolling interests on consolidated joint ventures reported on page 32.
(3) AFFO adjustments pertaining to COPT’s share of an unconsolidated real estate joint venture reported on page 33.



	Three Months Ended															Year Ended
	12/31/16			9/30/16			6/30/16			3/31/16			12/31/15			12/31/16			12/31/15
Net income (loss)	$	26,603		$	29,272		$	(48,316	)	$	8,096		$	62,617		$	15,655		$	188,878
Interest expense on continuing and discontinued operations	18,664			18,301			22,639			23,559			22,347			83,163			89,074
Income tax expense (benefit)	272			(21		)	1			(8		)	46			244			199
Depreciation of furniture, fixtures and equipment	512			513			524			602			597			2,151			2,206
Real estate-related depreciation and amortization	32,929			32,015			33,248			34,527			36,237			132,719			140,025
Impairment losses	1,554			27,699			69,692			2,446			19,744			101,391			23,523
Loss (gain) on early extinguishment of debt on continuing and discontinued operations	1,073			59			(5		)	(17		)	402			1,110			(85,655		)
Gain on sales of operating properties	312			(34,101		)	—			—			(64,047		)	(33,789		)	(64,062		)
Gain on sales of non-operational properties	(7,197		)	—			—			—			—			(7,197		)	(3,985		)
Net (gain) loss on investments in unconsolidated entities included in interest and other income	(117		)	27			(36		)	(23		)	6			(149		)	127
Business development expenses	1,167			1,016			1,261			1,379			1,512			4,823			4,775
Operating property acquisition costs	—			—			—			—			32			—			4,134
EBITDA from properties conveyed to extinguish debt in default	—			—			—			—			—			—			(768		)
Demolition costs on redevelopment properties	—			—			370			208			225			578			1,396
Adjustments from unconsolidated real estate JV (1)	578			415			—			—			—			993			—
Executive transition costs	431			1,639			247			4,137			—			6,454			—
Adjusted EBITDA	$	76,781		$	76,834		$	79,625		$	74,906		$	79,718		$	308,146		$	299,867
Proforma NOI adjustment for property changes within period	39			(2,469		)	109			471			(1,738		)
In-place adjusted EBITDA	$	76,820		$	74,365		$	79,734		$	75,377		$	77,980



	# of Properties	Operational Square Feet	Occupancy %		Leased %
Core Portfolio: (2)
Defense IT Locations: (3)
Fort Meade/Baltimore Washington (“BW”) Corridor:
National Business Park	29	3,486	96.1	%	96.4	%
Howard County	35	2,756	91.9	%	94.3	%
Other	22	1,576	94.6	%	95.1	%
Total Fort Meade/BW Corridor	86	7,818	94.3	%	95.4	%
Northern Virginia (“NoVA”) Defense/IT	11	1,599	84.8	%	85.8	%
Lackland AFB (San Antonio, Texas)	7	953	100.0	%	100.0	%
Navy Support	21	1,258	72.7	%	81.3	%
Redstone Arsenal (Huntsville, Alabama)	7	642	96.4	%	100.0	%
Data Center Shells
Consolidated Properties	7	1,045	100.0	%	100.0	%
Unconsolidated JV Properties (4)	6	962	100.0	%	100.0	%
Total Defense/IT Locations	145	14,277	92.6	%	94.2	%
Regional Office (5)	7	2,024	95.1	%	95.3	%
Core Portfolio	152	16,301	92.9	%	94.4	%
Properties Held for Sale	9	603	92.4	%	94.0	%
Other Properties	3	286	44.0	%	44.0	%
Total Portfolio	164	17,190	92.1	%	93.5	%
Consolidated Properties	158	16,228	91.6	%	93.1	%

(dollars and square feet in thousands)



	12/31/16
	# of Operating Office Properties	Office Operational Square Feet			Office Property Annualized Rental Revenue (2)		Percentage of Total Office Annualized Rental Revenue (2)		NOI from Real Estate Operations for Three Months Ended		NOI from Real Estate Operations for the Year Ended
Property Grouping	# of Operating Office Properties	Office Operational Square Feet	% Occupied (1)	% Leased (1)	Office Property Annualized Rental Revenue (2)		Percentage of Total Office Annualized Rental Revenue (2)		12/31/16		12/31/16
Core Portfolio:
Same Office Properties (3)	130	12,963	92.5%	93.8%	$	388,476	82.3	%	$	63,211	$	245,149
Office Properties Placed in Service (4)	13	1,203	90.9%	95.5%	26,284		5.6	%	4,500		15,667
Acquired Office Properties (5)	3	1,173	94.1%	94.6%	33,586		7.1	%	5,257		21,011
Unconsolidated real estate JV (6)	6	962	100.0%	100.0%	5,233		1.1	%	1,297		2,305
Wholesale Data Center and Other	N/A	N/A	N/A	N/A	N/A		N/A		3,799		15,075
Total Core Portfolio	152	16,301	92.9%	94.4%	453,579		96.1	%	78,064		299,207
Office Properties Held for Sale (7)	9	603	92.4%	94.0%	14,962		3.1	%	2,717		9,499
Disposed Office Properties	N/A	N/A	N/A	N/A	N/A		N/A		303		19,713
Other Office Properties (Same Office)	3	286	44.0%	44.0%	3,678		0.8	%	650		2,320
Total Portfolio	164	17,190	92.1%	93.5%	$	472,219	100.0	%	$	81,734	$	330,739
Consolidated Properties	158	16,228	91.6%	93.1%	$	466,986	98.9	%	$	80,437	$	328,434

	12/31/16
	# of Operating Office Properties	Office Operational Square Feet			Office Property Annualized Rental Revenue (2)		Percentage of Core Portfolio Annualized Rental Revenue (2)		NOI from Real Estate Operations for Three Months Ended		NOI from Real Estate Operations for the Year Ended
Property Grouping	# of Operating Office Properties	Office Operational Square Feet	% Occupied (1)	% Leased (1)	Office Property Annualized Rental Revenue (2)		Percentage of Core Portfolio Annualized Rental Revenue (2)		12/31/16		12/31/16
Core Portfolio:
Defense/IT Locations
Consolidated properties	139	13,315	92.1%	93.8%	387,772		85.5	%	63,346		242,969
Unconsolidated real estate JV (6)	6	962	100.0%	100.0%	5,233		1.2	%	1,297		2,305
Total Defense/IT Locations	145	14,277	92.6%	94.2%	393,005		86.6	%	64,643		245,274
Regional Office	7	2,024	95.1%	95.3%	60,574		13.4	%	9,648		38,530
Wholesale Data Center and Other	N/A	N/A	N/A	N/A	N/A		N/A		3,773		15,403
Total Core Portfolio	152	16,301	92.9%	94.4%	$	453,579	100.0	%	$	78,064	$	299,207



	Three Months Ended										Year Ended
	12/31/16		9/30/16		6/30/16		3/31/16		12/31/15		12/31/16		12/31/15
Consolidated real estate revenues
Defense/IT Locations:
Fort Meade/BW Corridor	$	60,473	$	61,460	$	60,912	$	62,509	$	61,683	$	245,354	$	244,274
NoVA Defense/IT	12,560		12,231		12,057		12,116		11,816		48,964		49,199
Lackland Air Force Base	12,395		12,532		11,651		10,225		12,233		46,803		39,659
Navy Support	7,033		7,232		6,998		6,934		6,840		28,197		28,177
Redstone Arsenal	3,560		3,189		3,191		3,116		3,063		13,056		11,228
Data Center Shells-Consolidated	5,043		5,175		7,288		6,330		5,930		23,836		21,746
Total Defense/IT locations	101,064		101,819		102,097		101,230		101,565		406,210		394,283
Regional Office	18,521		20,499		23,283		23,502		25,023		85,805		98,165
Wholesale Data Center	6,763		6,809		6,804		6,493		6,099		26,869		19,032
Other	1,651		1,827		1,740		1,862		1,790		7,080		7,588
Consolidated real estate revenues	$	127,999	$	130,954	$	133,924	$	133,087	$	134,477	$	525,964	$	519,068

NOI
Defense/IT Locations:
Fort Meade/BW Corridor	$	41,011	$	40,862	$	40,534	$	39,263	$	41,476	$	161,670	$	160,965
NoVA Defense/IT	8,046		7,769		7,750		7,575		7,829		31,140		29,092
Lackland Air Force Base	4,901		4,933		4,807		4,805		4,894		19,446		17,655
Navy Support	3,916		3,858		4,323		3,410		3,686		15,507		14,948
Redstone Arsenal	2,134		2,077		2,231		2,138		2,171		8,580		7,731
Data Center Shells
Consolidated properties	4,533		4,647		6,462		5,520		5,358		21,162		19,448
COPT’s share of unconsolidated real estate JV (1)	1,297		1,008		—		—		—		2,305		—
Total Defense/IT locations	65,838		65,154		66,107		62,711		65,414		259,810		249,839
Regional Office	11,133		12,344		14,562		13,671		15,608		51,710		62,000
Wholesale Data Center	3,880		3,492		4,153		3,832		4,138		15,357		8,630
Other	883		1,020		961		998		819		3,862		4,111
NOI from real estate operations	$	81,734	$	82,010	$	85,783	$	81,212	$	85,979	$	330,739	$	324,580



	Three Months Ended															Year Ended
	12/31/16			9/30/16			6/30/16			3/31/16			12/31/15			12/31/16			12/31/15

Cash NOI
Defense/IT Locations:
Fort Meade/BW Corridor	$	40,872		$	40,253		$	39,588		$	38,502		$	39,668		$	159,215		$	154,417
NoVA Defense/IT	7,766			7,234			7,614			7,922			8,045			30,536			25,878
Lackland Air Force Base	4,945			4,855			4,718			4,716			4,745			19,234			15,093
Navy Support	3,612			3,524			4,218			3,196			3,597			14,550			14,567
Redstone Arsenal	2,326			2,411			2,534			2,473			2,267			9,744			7,828
Data Center Shells
Consolidated properties	4,519			4,549			6,077			5,108			5,024			20,253			17,766
COPT’s share of unconsolidated real estate JV (1)	1,103			862			—			—			—			1,965			—
Total Defense/IT locations	65,143			63,688			64,749			61,917			63,346			255,497			235,549
Regional Office	10,967			12,480			14,152			13,000			15,031			50,599			59,210
Wholesale Data Center	3,833			3,439			4,052			3,728			4,011			15,052			8,994
Other	739			935			892			823			835			3,389			4,057
Cash NOI from real estate operations	$	80,682		$	80,542		$	83,845		$	79,468		$	83,223		$	324,537		$	307,810
Straight line rent adjustments and lease incentive amortization	(1,650		)	(1,086		)	(897		)	546			2,254			(3,087		)	11,858
Add: Amortization of deferred market rental revenue	(315		)	(201		)	(189		)	(190		)	(178		)	(895		)	(720		)
Less: Amortization of below-market cost arrangements	(244		)	(241		)	(241		)	(240		)	(284		)	(966		)	(1,089		)
Add: Lease termination fee, gross	938			471			417			980			417			2,806			2,373
Add: Cash NOI on tenant funded landlord assets	2,129			2,379			2,848			648			547			8,004			4,348
Cash NOI adjustments in unconsolidated real estate JV	194			146			—			—			—			340			—
NOI from real estate operations	$	81,734		$	82,010		$	85,783		$	81,212		$	85,979		$	330,739		$	324,580



	Number of Buildings	Rentable Square Feet	Three Months Ended										Year Ended
	Number of Buildings	Rentable Square Feet	12/31/16		9/30/16		6/30/16		3/31/16		12/31/15		12/31/16		12/31/15
Core Portfolio:
Defense/IT Locations:
Fort Meade/BW Corridor	82	7,635	95.1	%	94.7	%	94.6	%	94.6	%	96.1	%	94.7	%	95.4	%
NoVA Defense/IT	9	1,203	78.7	%	76.4	%	74.1	%	74.5	%	75.9	%	76.0	%	75.9	%
Lackland Air Force Base	6	792	100.0	%	100.0	%	100.0	%	100.0	%	100.0	%	100.0	%	100.0	%
Navy Support	20	1,231	74.9	%	75.2	%	74.6	%	74.0	%	73.9	%	74.7	%	76.7	%
Redstone Arsenal	5	563	98.6	%	99.4	%	98.8	%	97.5	%	95.7	%	98.6	%	91.0	%
Data Center Shells	3	451	100.0	%	100.0	%	100.0	%	100.0	%	100.0	%	100.0	%	100.0	%
Total Defense/IT Locations	125	11,875	92.0	%	91.6	%	91.2	%	91.1	%	92.1	%	91.5	%	91.7	%
Regional Office	5	1,088	95.9	%	98.2	%	98.8	%	97.5	%	96.0	%	97.6	%	94.8	%
Core Portfolio Same Office Properties	130	12,963	92.3	%	92.2	%	91.8	%	91.7	%	92.4	%	92.0	%	92.0	%
Other Same Office Properties	3	286	44.0	%	44.0	%	43.5	%	43.5	%	44.2	%	43.8	%	45.0	%
Total Same Office Properties	133	13,249	91.3	%	91.1	%	90.8	%	90.6	%	91.4	%	91.0	%	91.0	%

Corporate Office Properties Trust Same Office Properties (1) Period End Occupancy Rates by Segment (square feet in thousands)
	Number of Buildings	Rentable Square Feet
	Number of Buildings	Rentable Square Feet	12/31/16		9/30/16		6/30/16		3/31/16		12/31/15
Core Portfolio:
Defense/IT Locations:
Fort Meade/BW Corridor	82	7,635	95.3	%	94.7	%	94.5	%	94.5	%	96.1	%
NoVA Defense/IT	9	1,203	79.8	%	78.1	%	73.9	%	74.5	%	75.8	%
Lackland Air Force Base	6	792	100.0	%	100.0	%	100.0	%	100.0	%	100.0	%
Navy Support	20	1,231	74.3	%	75.3	%	76.4	%	73.4	%	73.8	%
Redstone Arsenal	5	563	95.9	%	100.0	%	98.8	%	98.8	%	96.7	%
Data Center Shells	3	451	100.0	%	100.0	%	100.0	%	100.0	%	100.0	%
Total Defense/IT Locations	125	11,875	92.1	%	91.8	%	91.3	%	91.0	%	92.2	%
Regional Office	5	1,088	97.2	%	97.8	%	99.3	%	98.0	%	96.3	%
Core Portfolio Same Office Properties	130	12,963	92.5	%	92.3	%	92.0	%	91.6	%	92.5	%
Other Same Office Properties	3	286	44.0	%	44.0	%	43.5	%	43.5	%	44.4	%
Total Same Office Properties	133	13,249	91.5	%	91.3	%	90.9	%	90.6	%	91.5	%



	Three Months Ended										Year Ended
	12/31/16		9/30/16		6/30/16		3/31/16		12/31/15		12/31/16		12/31/15
Same office property real estate revenues
Defense/IT Locations:
Fort Meade/BW Corridor	$	59,280	$	58,597	$	57,973	$	59,830	$	59,044	$	235,680	$	234,763
NoVA Defense/IT	7,229		6,650		6,500		6,755		6,666		27,134		26,876
Lackland Air Force Base	10,410		10,536		10,031		8,699		10,564		39,676		35,453
Navy Support	7,033		7,232		6,998		6,934		6,840		28,197		28,177
Redstone Arsenal	2,990		2,828		2,847		2,771		2,718		11,436		10,387
Data Center Shells	3,023		3,050		3,095		3,040		3,051		12,208		12,240
Total Defense/IT Locations	89,965		88,893		87,444		88,029		88,883		354,331		347,896
Regional Office	9,365		9,402		9,379		9,158		8,954		37,304		36,759
Other Properties	1,022		1,016		951		930		965		3,919		4,047
Same office property real estate revenues	$	100,352	$	99,311	$	97,774	$	98,117	$	98,802	$	395,554	$	388,702
Same office property NOI
Defense/IT Locations:
Fort Meade/BW Corridor	$	40,130	$	39,045	$	38,729	$	37,904	$	39,709	$	155,808	$	155,086
NoVA Defense/IT	4,489		4,119		3,969		4,000		4,158		16,577		16,198
Lackland Air Force Base	3,763		3,741		3,746		3,749		3,746		14,999		14,809
Navy Support	3,942		3,875		4,340		3,435		3,706		15,592		14,974
Redstone Arsenal	2,158		1,961		1,981		1,872		1,905		7,972		7,027
Data Center Shells	2,755		2,758		2,764		2,769		2,770		11,046		11,077
Total Defense/IT Locations	57,237		55,499		55,529		53,729		55,994		221,994		219,171
Regional Office	5,974		5,819		5,790		5,571		5,509		23,154		22,324
Other Properties	650		606		577		488		411		2,321		2,030
Same office property NOI	$	63,861	$	61,924	$	61,896	$	59,788	$	61,914	$	247,469	$	243,525



	Three Months Ended															Year Ended
	12/31/16			9/30/16			6/30/16			3/31/16			12/31/15			12/31/16			12/31/15
Same office property cash NOI
Defense/IT Locations:
Fort Meade/BW Corridor	$	40,220		$	38,999		$	38,553		$	37,460		$	38,653		$	155,232		$	150,037
NoVA Defense/IT	3,987			3,340			3,545			3,999			4,138			14,871			15,726
Lackland Air Force Base	3,868			3,742			3,748			3,751			3,748			15,109			14,516
Navy Support	3,637			3,542			4,234			3,221			3,617			14,634			14,592
Redstone Arsenal	2,365			2,312			2,307			2,229			2,118			9,213			7,644
Data Center Shells	2,927			2,915			2,890			2,883			2,877			11,615			11,391
Total Defense/IT Locations	57,004			54,850			55,277			53,543			55,151			220,674			213,906
Regional Office	6,388			6,218			6,252			6,042			5,801			24,900			21,914
Other Properties	546			561			554			470			407			2,131			2,040
Same office property cash NOI	$	63,938		$	61,629		$	62,083		$	60,055		$	61,359		$	247,705		$	237,860
Straight line rent adjustments and lease incentive amortization	(1,829		)	(2,278		)	(3,186		)	(1,599		)	(177		)	(8,892		)	3,297
Add: Amortization of deferred market rental revenue	(1		)	22			34			34			28			89			99
Less: Amortization of below-market cost arrangements	(218		)	(218		)	(219		)	(218		)	(259		)	(873		)	(1,034		)
Add: Lease termination fee, gross	601			390			336			953			416			2,280			2,366
Add: Cash NOI on tenant-funded landlord assets	1,370			2,379			2,848			563			547			7,160			937
Same office property NOI	$	63,861		$	61,924		$	61,896		$	59,788		$	61,914		$	247,469		$	243,525
Percentage change in same office property cash NOI (1)	4.2		%													4.1		%

(square feet in thousands)



	Defense/IT Locations																					As Adjusted (3)
	Ft Meade/BW Corridor			NoVA Defense/IT			Navy Support			Redstone Arsenal			Data Center Shells			Regional Office			Total Office			Ft Meade/BW Corridor			Total Office
Renewed Space
Leased Square Feet	122			—			32			—			—			11			165			247			290
Expiring Square Feet	154			24			52			23			—			40			293			279			419
Vacating Square Feet	32			24			20			23			—			29			129			32			129
Retention Rate (% based upon square feet)	79.3		%	—		%	61.3		%	—		%	—		%	26.7		%	56.1		%	88.6		%	69.3		%
Statistics for Completed Leasing:
Average Committed Cost per Square Foot	$	10.79		$	—		$	0.40		$	—		$	—		$	13.11		$	8.91		$	15.47		$	13.71
Weighted Average Lease Term in Years	4.9			—			1.3			—			—			5.2			4.2			7.5			6.7
GAAP Rent Per Square Foot
Renewal GAAP Rent	$	22.37		$	—		$	10.46		$	—		$	—		$	28.29		$	20.43		$	34.78		$	31.85
Expiring GAAP Rent	$	25.93		$	—		$	9.97		$	—		$	—		$	30.06		$	23.08		$	31.56		$	29.11
Change in GAAP Rent	(13.7		)%	—		%	4.9		%	—		%	—		%	(5.9		)%	(11.5		)%	10.2		%	9.4		%
Cash Rent Per Square Foot
Renewal Cash Rent	$	22.08		$	—		$	10.57		$	—		$	—		$	28.48		$	20.24		$	32.57		$	29.98
Expiring Cash Rent	$	26.80		$	—		$	10.71		$	—		$	—		$	30.86		$	23.92		$	33.54		$	30.91
Change in Cash Rent	(17.6		)%	—		%	(1.4		)%	—		%	—		%	(7.7		)%	(15.4		)%	(2.9		)%	(3.0		)%
Average escalations per year	2.7		%	—		%	0.8		%	—		%	—		%	2.9		%	2.6		%	2.9		%	2.9		%
New Leases
Development and Redevelopment Space
Leased Square Feet	29			—			27			—			216			—			272			29			272
Statistics for Completed Leasing:
Average Committed Cost per Square Foot	$	78.35		$	—		$	19.80		$	—		$	—		$	—		$	10.30		$	78.35		$	10.30
Weighted Average Lease Term in Years	7.3			—			5.0			—			10.5			—			9.6			7.3			9.6
GAAP Rent Per Square Foot	$	26.76		$	—		$	11.45		$	—		$	15.35		$	—		$	16.17		$	26.76		$	16.17
Cash Rent Per Square Foot	$	26.00		$	—		$	12.00		$	—		$	14.64		$	—		$	15.58		$	26.00		$	15.58
Other New Leases (2)
Leased Square Feet	24			—			33			23			—			16			96			24			96
Statistics for Completed Leasing:
Average Committed Cost per Square Foot	$	24.00		$	—		$	36.40		$	40.15		$	—		$	73.34		$	40.21		$	24.00		$	40.21
Weighted Average Lease Term in Years	3.7			—			5.6			7.0			—			9.3			6.1			3.7			6.1
GAAP Rent Per Square Foot	$	31.82		$	—		$	22.44		$	24.17		$	—		$	34.08		$	27.08		$	31.82		$	27.08
Cash Rent Per Square Foot	$	31.26		$	—		$	22.98		$	23.00		$	—		$	33.11		$	26.69		$	31.26		$	26.69
Total Square Feet Leased	175			—			93			23			216			26			533			300			658
Average escalations per year	2.7		%	—		%	2.2		%	2.8		%	2.3		%	2.7		%	2.4		%	2.9		%	2.5		%
Average escalations excl. data center shells																			2.6		%				2.8		%



	Defense/IT Locations																								As Adjusted (3)
	Ft Meade/BW Corridor			NoVA Defense/IT			Navy Support			Redstone Arsenal			Data Center Shells			Regional Office			Other			Total Office			Ft Meade/BW Corridor			Total Office
Renewed Space
Leased Square Feet	774			295			152			1			—			273			23			1,518			899			1,644
Expiring Square Feet	1,027			375			187			25			—			372			32			2,018			1,153			2,144
Vacating Square Feet	254			80			35			23			—			98			10			500			254			500
Retention Rate (% based upon square feet)	75.3		%	78.6		%	81.4		%	5.4		%	—		%	73.6		%	70.1		%	75.2		%	78.0		%	76.7		%
Statistics for Completed Leasing:
Average Committed Cost per Square Foot	$	12.06		$	11.37		$	8.38		$	6.14		$	—		$	65.78		$	—		$	21.05		$	13.17		$	20.97
Weighted Average Lease Term in Years	5.5			5.6			2.7			0.5			—			9.3			1.0			5.8			6.1			6.2
GAAP Rent Per Square Foot
Renewal GAAP Rent	$	32.09		$	31.41		$	23.69		$	27.08		$	—		$	34.78		$	22.85		$	31.46		$	34.14		$	32.63
Expiring GAAP Rent	$	29.85		$	29.68		$	25.59		$	26.55		$	—		$	36.77		$	20.79		$	30.50		$	30.86		$	31.00
Change in GAAP Rent	7.5		%	5.9		%	(7.4		)%	2.0		%	—		%	(5.4		)%	9.9		%	3.1		%	10.7		%	5.3		%
Cash Rent Per Square Foot
Renewal Cash Rent	$	30.80		$	30.30		$	23.67		$	25.50		$	—		$	34.52		$	22.85		$	30.53		$	32.47		$	31.47
Expiring Cash Rent	$	31.63		$	31.25		$	26.54		$	25.00		$	—		$	41.33		$	22.85		$	32.66		$	32.81		$	33.22
Change in Cash Rent	(2.6		)%	(3.0		)%	(10.8		)%	2.0		%	—		%	(16.5		)%	—		%	(6.5		)%	(1.1		)%	(5.3		)%
Average escalations per year	2.8		%	2.3		%	1.9		%	—		%	—		%	2.3		%	—		%	2.5		%	2.9		%	2.6		%
New Leases
Development and Redevelopment Space
Leased Square Feet	52			35			27			—			728			—			—			843			52			843
Statistics for Completed Leasing:
Average Committed Cost per Square Foot	$	72.20		$	89.01		$	19.80		$	—		$	—		$	—		$	—		$	8.81		$	72.20		$	8.81
Weighted Average Lease Term in Years	7.3			10.2			5.0			—			10.1			—			—			9.8			7.3			9.8
GAAP Rent Per Square Foot	$	27.50		$	34.24		$	11.45		$	—		$	14.09		$	—		$	—		$	15.68		$	27.50		$	15.68
Cash Rent Per Square Foot	$	26.01		$	32.58		$	12.00		$	—		$	13.10		$	—		$	—		$	14.67		$	26.01		$	14.67
Other New Leases (2)
Leased Square Feet	197			50			122			30			—			57			6			463			197			463
Statistics for Completed Leasing:
Average Committed Cost per Square Foot	$	33.50		$	58.90		$	44.58		$	43.97		$	—		$	49.61		$	36.57		$	41.87		$	33.50		$	41.87
Weighted Average Lease Term in Years	6.2			6.2			5.6			6.8			—			7.9			3.8			6.3			6.2			6.3
GAAP Rent Per Square Foot	$	29.11		$	26.24		$	29.43		$	24.40		$	—		$	30.30		$	21.09		$	28.61		$	29.11		$	28.61
Cash Rent Per Square Foot	$	28.35		$	25.86		$	31.21		$	23.09		$	—		$	29.50		$	20.49		$	28.52		$	28.35		$	28.52
Total Square Feet Leased	1,023			380			302			32			728			331			29			2,824			1,149			2,950
Average escalations per year	2.8		%	2.4		%	1.6		%	2.8		%	2.3		%	2.4		%	1.6		%	2.4		%	2.8		%	2.4		%
Average escalations excl. data center shells																						2.5		%				2.5		%



Year and Region of Lease (2)	Number of Leases Expiring	Square Footage of Leases Expiring	Annual Rental Revenue of Expiring Leases (3)		Percentage of Total Annualized Rental Revenue Expiring (3)		Annual Rental Revenue of Expiring Leases per Occupied Square Foot
Core Portfolio
Ft Meade/BW Corridor	40	888	$	30,870	6.8	%	$34.78
NoVA Defense/IT	7	38	1,200		0.3	%	31.30
Navy Support	18	141	2,887		0.6	%	20.41
Redstone Arsenal	1	2	34		—	%	19.89
Regional Office	10	154	5,323		1.2	%	34.64
2017	76	1,223	40,314		8.9	%	32.97
Ft Meade/BW Corridor	53	1,383	45,537		10.0	%	32.92
NoVA Defense/IT	4	163	6,256		1.4	%	38.36
Navy Support	17	190	5,049		1.1	%	26.58
Redstone Arsenal	3	251	6,482		1.4	%	25.80
Data Center Shells-Consolidated properties	1	155	2,498		0.6	%	16.11
Regional Office	14	140	4,572		1.0	%	32.73
2018	92	2,282	70,394		15.5	%	30.84
Ft Meade/BW Corridor	44	1,505	48,850		10.8	%	32.45
NoVA Defense/IT	5	286	10,692		2.4	%	37.42
Navy Support	13	79	2,150		0.5	%	27.23
Redstone Arsenal	3	48	1,060		0.2	%	22.15
Regional Office	11	158	4,371		1.0	%	27.58
2019	76	2,076	67,123		14.8	%	32.33
Ft Meade/BW Corridor	41	1,015	32,188		7.1	%	31.70
NoVA Defense/IT	6	136	3,814		0.8	%	28.01
Lackland Air Force Base	2	250	9,745		2.1	%	38.93
Navy Support	16	171	6,976		1.5	%	40.80
Redstone Arsenal	1	11	217		—	%	19.48
Regional Office	11	67	2,047		0.5	%	30.40
2020	77	1,650	54,987		12.1	%	33.30
Ft Meade/BW Corridor	37	860	28,038		6.2	%	32.62
NoVA Defense/IT	10	153	4,132		0.9	%	27.03
Navy Support	15	167	5,059		1.1	%	30.34
Redstone Arsenal	6	161	3,465		0.8	%	21.52
Regional Office	9	119	3,332		0.7	%	27.91
2021	77	1,460	44,026		9.7	%	30.16
Thereafter
Consolidated Properties	130	5,495	171,502		37.8	%	31.21
Unconsolidated JV Properties	6	962	5,233		1.2	%	10.88
Core Portfolio	534	15,148	$	453,579	100.0	%	$29.94



Year and Region of Lease (2)	Number of Leases Expiring	Square Footage of Leases Expiring	Annual Rental Revenue of Expiring Leases (3)		Percentage of Total Annualized Rental Revenue Expiring (3)		Annual Rental Revenue of Expiring Leases per Occupied Square Foot
Core Portfolio	534	15,148	$	453,579	100.0	%	$29.94
Office Properties Held for Sale and Other
NoVA Defense/IT	12	166	5,911		31.7	%	35.57
Regional Office	20	328	7,809		41.9	%	23.83
Other	14	189	4,920		26.4	%	26.03
Office Properties Held for Sale and Other Total Average	46	683	18,640		100.0	%	27.30
Total Portfolio	580	15,831	$	472,219			$30.16
Consolidated Portfolio	574	14,869	$	466,986
Unconsolidated JV Properties	6	962	$	5,233



Tenant		Number of Leases	Total Occupied Square Feet	Percentage of Total Occupied Square Feet		Total Annualized Rental Revenue (2)		Percentage of Total Annualized Rental Revenue (2)		Weighted Average Remaining Lease Term (3)
United States Government	(4)	60	3,779	23.9	%	$	146,560	31.0	%	4.5
Northrop Grumman Corporation		8	758	4.8	%	22,714		4.8	%	4.0
The Boeing Company		11	685	4.3	%	20,219		4.3	%	2.6
General Dynamics Corporation		7	528	3.3	%	19,373		4.1	%	4.6
Vadata Inc.	(1)	10	1,556	9.8	%	13,904		2.9	%	8.5
CareFirst, Inc.		2	313	2.0	%	11,069		2.3	%	6.1
Computer Sciences Corporation		3	279	1.8	%	10,913		2.3	%	2.2
Booz Allen Hamilton, Inc.		5	268	1.7	%	9,336		2.0	%	4.4
CACI Technologies, Inc.		3	225	1.4	%	7,447		1.6	%	3.7
Wells Fargo & Company		5	190	1.2	%	7,232		1.5	%	10.5
AT&T Corporation		3	308	1.9	%	6,019		1.3	%	2.3
KEYW Corporation		2	211	1.3	%	5,958		1.3	%	7.0
The Raytheon Company		5	161	1.0	%	5,759		1.2	%	2.3
Miles & Stockbridge, PC		2	156	1.0	%	5,052		1.1	%	10.7
Transamerica Life Insurance Company		2	159	1.0	%	4,815		1.0	%	5.0
Harris Corporation		6	170	1.1	%	4,782		1.0	%	5.3
University of Maryland		3	172	1.1	%	4,692		1.0	%	4.6
Science Applications International Corp.		4	131	0.8	%	4,647		1.0	%	3.9
Kratos Defense and Security Solutions		1	131	0.8	%	4,638		1.0	%	3.3
The Mitre Corporation		4	122	0.8	%	4,267		0.9	%	3.0
Subtotal Top 20 Office Tenants		146	10,302	65.1	%	319,396		67.6	%	5.0
All remaining tenants		434	5,530	34.9	%	152,823		32.4	%	4.2
Total/Weighted Average		580	15,831	100.0	%	$	472,219	100.0	%	4.8



	Property Segment/Subsegment	Business Park/Submarket	Number of Buildings	Square Feet	Transaction Date	Occupancy on Transaction Date	Transaction Price
Quarter Ended 3/31/16
Colorado Springs Land	N/A	N/A	N/A	N/A	Various	N/A	$	5,701

Quarter Ended 9/30/16
50% interest in DC8, 9, 10, 11, 12 and 14	Data Center Shells	Ashburn and Prince William County	6	962	7/21/2016	100.0%	73,821		(1)
Arborcrest Corporate Campus properties	Regional Office	Greater Philadelphia	4	654	8/4/2016	100.0%	142,800
8003 Corporate Drive	Regional Office	White Marsh	1	18	8/17/2016	100.0%	2,400
1341 and 1343 Ashton Road	Fort Meade/BW Corridor	BWI South	2	25	9/9/2016	60.7%	2,900
8007, 8013, 8015, 8019 and 8023-8027 Corporate Drive	Regional Office	White Marsh	5	130	9/21/2016	77.8%	14,513
1302, 1304 and 1306 Concourse Drive	Fort Meade/BW Corridor	Airport Square	3	299	9/29/2016	83.1%	48,100
Subtotal - Quarter Ended 9/30/16			21	2,088			284,534

Quarter Ended 12/31/16
2900 Towerview Road	NoVA Defense/IT	Route 28 South	1	151	10/19/2016	100.0%	12,100
4940 Campbell Boulevard	Regional Office	White Marsh	1	50	11/17/2016	76.9%	5,200
1560 A and B Cable Ranch Road	Other	San Antonio	2	120	11/30/2016	61.8%	10,300
White Marsh Land	N/A	N/A	N/A	N/A	12/1/2016	N/A	12,150
1331 Ashton Road	Fort Meade/BW Corridor	BWI South	1	29	12/19/2016	100.0%	2,625
900 Elkridge Landing Road	Fort Meade/BW Corridor	Airport Square	1	101	12/22/2016	25.6%	7,800
Colorado Springs Land	N/A	N/A	N/A	N/A	Various	N/A	3,925
Subtotal - Quarter Ended 12/31/16			6	451			54,100

Total 2016 Dispositions			27	2,539			$	344,335



	Property Segment	Park/Submarket	Total Rentable Square Feet	Percentage Leased as of 12/31/16	as of 12/31/16 (2)						Actual or Anticipated Shell Completion Date	Anticipated Operational Date (3)
					Anticipated Total Cost		Cost to Date		Cost to Date Placed in Service

Property and Location
Under Construction
2100 Rideout Road Huntsville, Alabama (4)	Redstone Arsenal	Redstone Gateway	19	58%	$	5,295	$	4,656	$	2,958	2Q 16	2Q 17
Bethlehem Technology Park - DC20 Manassas, Virginia	Data Center Shells	Manassas	216	100%	29,913		15,828		—		2Q 17	2Q 17
Bethlehem Technology Park - DC18 Manassas, Virginia	Data Center Shells	Manassas	216	100%	34,800		7,900		—		3Q 17	3Q 17
NOVA Office D Northern Virginia	NoVA Defense/IT	Other	240	100%	49,344		19,355		—		3Q 17	3Q 17
540 National Business Parkway Annapolis Junction, Maryland	Ft. Meade/BW Corridor	National Bus. Park	145	49%	43,712		29,413		—		1Q 17	1Q 18
5801 University Research Court College Park, Maryland	Ft. Meade/BW Corridor	College Park	71	0%	18,544		1,964		—		4Q 17	4Q 18
Total Under Construction			907	83%	$	181,608	$	79,116	$	2,958

Held for Lease to Government
310 Sentinel Way Annapolis Junction, Maryland	Ft Meade/BW Corridor	National Bus. Park	191	8%	54,352		39,438		39,438		(1)	(1)
NOVA Office B Northern Virginia	NoVA Defense/IT	Other	161	0%	41,500		31,172		31,172		(1)	(1)
Total Held for Lease to Government			352	4%	$	95,852	$	70,610	$	70,610

Total Construction Projects			1,259	61%	$	277,460	$	149,726	$	73,568




	Property Segment	Park/Submarket	Total Rentable Square Feet	Percentage Leased as of 1/31/17	as of 12/31/16 (1)										Actual or Anticipated Shell Completion Date	Anticipated Operational Date (2)
					Historical Basis, Net		Incremental Redevelopment Cost		Anticipated Total Cost		Cost to Date		Cost to Date Placed in Service

Property and Location
7134 Columbia Gateway Drive Columbia, Maryland (3)	Ft Meade/BW Corridor	Howard Co. Perimeter	22	38%	$	1,675	$	2,575	$	4,250	$	3,863	$	2,790	1Q 16	1Q 17
1201 Winterson Rd (AS13) Linthicum, Maryland	Ft Meade/BW Corridor	Airport Square	68	61%	2,919		12,424		15,343		10,949		2,919		1Q 16	1Q 17
Airport Landing Retail Bldgs. (4) Linthicum, Maryland	Ft Meade/BW Corridor	Airport Square	14	56%	785		6,401		7,186		5,907		1,689		4Q 16	4Q 17
Total Under Redevelopment			104	55%	$	5,379	$	21,400	$	26,779	$	20,719	$	7,398




			Total Property								Space Placed in Service % Leased as of 12/31/16
	Property Segment	Park/Submarket	% Leased as of 12/31/16			Square Feet Placed in Service in 2016
Property and Location	Property Segment	Park/Submarket	% Leased as of 12/31/16	Rentable Square Feet	Prior Year	1st Quarter	2nd Quarter	3rd Quarter	4th Quarter	Total 2016
Patriot Point - DC15 Ashburn, Virginia	Data Center Shells	Ashburn	100%	149	—	149	—	—	—	149	100%
Patriot Point - DC16 Ashburn, Virginia	Data Center Shells	Ashburn	100%	149	—	—	149	—	—	149	100%
6708 Alexander Bell Drive Columbia, Maryland	Ft Meade/BW Corridor	Howard Co. Perimeter	57%	51	—	51	—	—	—	51	57%
7134 Columbia Gateway Drive Columbia, Maryland	Ft Meade/BW Corridor	Howard Co. Perimeter	37%	22	—	—	4	—	4	8	100%
Patriot Point - DC17 Ashburn, Virginia	Data Center Shells	Ashburn	100%	149	—	—	—	149	—	149	100%
7880 Milestone Parkway Hanover, Maryland	Ft Meade/BW Corridor	Arundel Preserve	73%	120	88	—	—	32	—	32	73%
2100 Rideout Road Huntsville, Alabama	Redstone Arsenal	Redstone Gateway	58%	19	—	—	—	11	—	11	100%
Bethlehem Technology Park - DC19 Manassas, Virginia	Data Center Shells	Manassas	100%	149	—	—	—	—	149	149	100%
Airport Landing Retail Buildings Linthicum, Maryland	Ft Meade/BW Corridor	Airport Square	57%	14	—	—	—	—	2	2	100%
Airport Landing Pad Site Linthicum, Maryland	Ft Meade/BW Corridor	Airport Square	100%	*	—	—	—	—	*	*	100%
Total Construction/Redevelopment Placed Into Service			90%	822	88	200	153	192	155	700	93%



Location	Acres		Estimated Developable Square Feet (in thousands)		Costs to Date
Land Owned/Controlled for Future Development
Defense IT Locations:
Fort Meade/BW Corridor:
National Business Park	233		1,956
Howard County	27		590
Other	133		1,494
Total Fort Meade/BW Corridor	393		4,040
NoVA Defense/IT	64		1,614
Lackland AFB	68		1,033
Navy Support	44		109
Redstone Arsenal (2)	428		4,084
Data Center Shells	21		206
Total Defense/IT Locations	1,018		11,086
Regional Office	10		1,089
Total land owned/controlled for future development	1,028		12,175		$	306,091

Other land owned/controlled	152		1,638		9,117
Land held for sale	47		725		13,492

Land owned/controlled	1,227		14,538		$	328,700
Land held for sale	(47	)	(725	)	(13,492		)
Land held, net	1,180		13,813		$	315,208



	Wtd. Avg.				Effective		Gross Debt
	Maturity		Stated		Rate		Balance at
	(Years)		Rate		(1)(2)		12/31/2016
Debt
Secured debt	7.2		4.05	%	4.06	%	$	168,368
Unsecured debt	5.9		3.66	%	4.08	%	1,751,861
Total Consolidated Debt	6.1		3.69	%	4.08	%	$	1,920,229

Fixed rate debt (2)	6.7		4.30	%	4.18	%	$	1,820,229
Variable rate debt	4.5		2.23	%	2.23	%	100,000
Total Consolidated Debt							$	1,920,229

Preferred Equity		Redeemable
5.6% Series K Convertible Pref. Shares (3)			(4)				$	26,583
7.375% Series L Redeemable Pref. Shares			Jun-17				172,500
7.5% Series I Convertible Preferred Units (5)			Sep-19				8,800
Total Preferred Equity							$	207,883

Common Equity
Common Shares							98,499
Common Units							3,590
Total Common Shares and Units							102,089

Closing Common Share Price on 12/31/16							$	31.22
Common Equity Market Capitalization							$	3,187,219

Total Equity Market Capitalization							$	3,395,102

Total Market Capitalization							$	5,315,331

(1) Excludes the effect of deferred financing cost amortization.
(2) Includes the effect of interest rate swaps that hedge the risk of changes in interest rates on variable rate debt.
(3) 532,000 shares outstanding with a liquidation preference of $50 per share, and convertible into 434,000 common units.
(4) We redeemed all of our Series K Preferred Shares effective on 1/21/17.
(5) 352,000 units outstanding with a liquidation preference of $25 per unit, and convertible into 176,000 common units.



Investment Grade Ratings & Outlook:			Latest Affirmation
Fitch	BBB-	Stable	10/4/16
Moody’s	Baa3	Stable	7/28/16
Standard & Poor’s	BBB-	Stable	5/24/16

(dollars in thousands)



														Balloon
														Payment
	Stated		Amount			Maturity			Stated			Amount		Due Upon		Maturity
Unsecured Debt	Rate		Outstanding			Date		Secured Debt	Rate			Outstanding		Maturity		Date
Revolving Credit Facility	L + 1.20%		$	—		May-19	(1)(2)	7015 Albert Einstein Drive	7.87	%		$	1,214	$	—	Nov-19
Senior Unsecured Notes								7200 Redstone Gateway (4)	L + 1.85%			13,586		12,132		Oct-20
3.70% due 2021	3.70	%	$	300,000		Jun-21		7740 Milestone Parkway	3.96	%		18,604		15,902		Feb-23
3.60% due 2023	3.60	%	350,000			May-23		100 & 30 Light Street	4.32	%		54,471		47,676		Jun-23
5.25% due 2024	5.25	%	250,000			Feb-24		1000, 1200 and 1100 Redstone
5.00% due 2025	5.00	%	300,000			Jul-25		Gateway (4)	4.47	%	(5)	35,883		27,649		Jun-24
Subtotal - Senior Unsecured Notes	4.32	%	$	1,200,000				M Square (5825 & 5850
Unsecured Bank Term Loans								University Research Court)(4)	3.82	%		44,610		35,603		Jun-26
								Total Secured Debt	4.05	%		$	168,368
2020 Maturity	L + 1.4%		300,000			May-20	(2)
2022 Maturity	L + 1.8%		250,000			Dec-22	(3)
Subtotal - Term Loans	2.23	%	550,000
Other Unsecured Debt	—	%	1,861			May-26
Total Unsecured Debt	3.66	%	$	1,751,861

Debt Summary
Total Unsecured Debt	3.66	%	$	1,751,861
Total Secured Debt	4.05	%	168,368
Consolidated Debt	3.69	%	$	1,920,229
Net discounts and deferred
financing costs			(16,228		)
Debt, per balance sheet			$	1,904,001

Consolidated Debt			$	1,920,229
COPT’s share of unconsolid. JV gross debt (6)			30,000
Gross debt			$	1,950,229



		As of and for Three					As of and for Three
		Months Ended			Line of Credit &		Months Ended
Senior Note Covenants (1)	Required	12/31/2016			Term Loan Covenants (1)	Required	12/31/2016
Total Debt / Total Assets	< 60%	41.6%			Total Debt / Total Assets	< 60%	35.5%
Secured Debt / Total Assets	< 40%	3.7%			Secured Debt / Total Assets	< 40%	3.2%
Debt Service Coverage	> 1.5x	3.5x			Adjusted EBITDA / Fixed Charges	> 1.5x	3.1x
Unencumbered Assets / Unsecured Debt	> 150%	243.3%			Unsecured Debt / Unencumbered Assets	< 60%	36.6%
					Unencumbered Adjusted NOI / Unsecured Interest Expense	> 1.75x	4.2x

Debt Ratios (2)	Source				Unencumbered Portfolio Analysis
Gross debt	p. 29	$	1,950,229		# of unencumbered properties		148
Adjusted book	p. 37	$	4,539,768		% of total portfolio		94		%
Net debt / adjusted book ratio		38.3		%	Unencumbered square feet in-service		14,710
Net debt plus pref. equity / adj. book ratio		42.9		%	% of total portfolio		91		%
Net debt	p. 37	$	1,740,083		NOI from unencumbered real estate operations		$	75,167
In-place adjusted EBITDA	p. 10	$	76,820		% of total NOI from real estate operations		92		%
Net debt / in-place adjusted EBITDA ratio		5.7		x	Adjusted EBITDA from unencumbered real estate operations		$	70,213
Net debt plus pref. equity / in-place adj. EBITDA ratio		6.3		x	% of total adjusted EBITDA from real estate operations		91		%
Denominator for debt service coverage	p. 36	$	19,162		Unencumbered adjusted book		$	4,135,432
Denominator for fixed charges	p. 36	$	24,386		% of total adjusted book		91		%
Adjusted EBITDA	p. 10	$	76,781
Adjusted EBITDA debt service coverage ratio		4.0		x
Adjusted EBITDA fixed charge coverage ratio		3.1		x




Joint venture information
COPT ownership %	50		%
Investment in unconsolidated real estate joint venture	$	25,548
Number of properties	6
Square feet	962
Percentage occupied	100		%
				COPT’s Share (1)
Balance sheet information
Operating properties, net	$	128,525		$	64,263
Total Assets	$	147,067		$	73,534
Debt	$	59,553		$	29,777					COPT’s Share (1)

Operating information	Three Months Ended 12/31/16						Year Ended 12/31/16 (2)
Revenue	$	2,913		$	1,504		$	5,182		$	2,671
Operating expenses	(414		)	(207		)	(733		)	(366		)
NOI and EBITDA	2,499			1,297			4,449			2,305
Interest expense	(534		)	(267		)	(950		)	(475		)
Depreciation and amortization	(874		)	(311		)	(1,456		)	(518		)
Net income	$	1,091		$	719		$	2,043		$	1,312

NOI (per above)	$	2,499		$	1,297		$	4,449		$	2,305
Straight line rent adjustments	(196		)	(194		)	(359		)	(340		)
Cash NOI	$	2,303		$	1,103		$	4,090		$	1,965

Corporate Office Properties Trust Supplementary Reconciliations of Non-GAAP Measures (dollars in thousands)

	Three Months Ended															Year Ended
	12/31/16			9/30/16			6/30/16			3/31/16			12/31/15			12/31/16			12/31/15
GAAP revenues from real estate operations from continuing operations	$	127,999		$	130,954		$	133,924		$	133,087		$	134,477		$	525,964		$	519,064
Revenues from discontinued operations	—			—			—			—			—			—			4
Real estate revenues	$	127,999		$	130,954		$	133,924		$	133,087		$	134,477		$	525,964		$	519,068

GAAP property operating expenses from continuing operations	$	47,562		$	49,952		$	48,141		$	51,875		$	48,498		$	197,530		$	194,494
Property operating expenses from discontinued operations	—			—			—			—			—			—			(6		)
Real estate property operating expenses	$	47,562		$	49,952		$	48,141		$	51,875		$	48,498		$	197,530		$	194,488

Discontinued Operations
Revenues from real estate operations	$	—		$	—		$	—		$	—		$	—		$	—		$	4
Property operating expenses	—			—			—			—			—			—			6
Gain on early extinguishment of debt	—			—			—			—			—			—			380
Impairment losses	—			—			—			—			—			—			(234		)
Gain on sales of depreciated real estate properties	—			—			—			—			—			—			—
Discontinued operations	$	—		$	—		$	—		$	—		$	—		$	—		$	156

Gain on sales of real estate, net, per statements of operations	$	6,885		$	34,101		$	—		$	—		$	64,047		$	40,986		$	68,047
Gain on sales of non-operating properties	(7,197		)	—			—			—			—			(7,197		)	(3,985		)
Gain on sales of operating properties	$	(312	)	$	34,101		$	—		$	—		$	64,047		$	33,789		$	64,062

Impairment losses, per statements of operations	$	1,554		$	27,699		$	69,692		$	2,446		$	19,744		$	101,391		$	23,289
Impairment losses on discontinued operations	—			—			—			—			—			—			234
Total impairment losses	$	1,554		$	27,699		$	69,692		$	2,446		$	19,744		$	101,391		$	23,523
Impairment losses on previously depreciated operating properties	(1,518		)	(25,857		)	(55,124		)	(847		)	(331		)	(83,346		)	(4,110		)
Impairment losses on non-operating properties	$	36		$	1,842		$	14,568		$	1,599		$	19,413		$	18,045		$	19,413

Corporate Office Properties Trust Supplementary Reconciliations of Non-GAAP Measures (continued) (dollars in thousands)

	Three Months Ended															Year Ended
	12/31/16			9/30/16			6/30/16			3/31/16			12/31/15			12/31/16			12/31/15
NOI from real estate operations (1)
Real estate revenues	$	127,999		$	130,954		$	133,924		$	133,087		$	134,477		$	525,964		$	519,068
Real estate property operating expenses	(47,562		)	(49,952		)	(48,141		)	(51,875		)	(48,498		)	(197,530		)	(194,488		)
COPT’s share of NOI in unconsolidated real estate JV (2)	1,297			1,008			—			—			—			2,305			—
NOI from real estate operations	81,734			82,010			85,783			81,212			85,979			330,739			324,580
General and administrative expenses	(6,211		)	(7,242		)	(6,512		)	(10,130		)	(6,609		)	(30,095		)	(24,526		)
Leasing expenses	(1,578		)	(1,613		)	(1,514		)	(1,753		)	(1,888		)	(6,458		)	(6,835		)
Business development expenses and land carry costs	(1,747		)	(1,716		)	(2,363		)	(2,418		)	(2,521		)	(8,244		)	(13,507		)
NOI from construction contracts and other service operations	1,024			808			525			526			1,075			2,883			3,706
Impairment losses on non-operating properties	(36		)	(1,842		)	(14,568		)	(1,599		)	(19,413		)	(18,045		)	(19,413		)
Equity in income of unconsolidated non-real estate entities	(1		)	1			10			10			10			20			62
Interest and other income	1,567			1,391			1,330			1,156			1,300			5,444			4,517
(Loss) gain on early extinguishment of debt	(1,073		)	(59		)	5			17			(402		)	(1,110		)	85,655
Gain on sales of non-operating properties	7,197			—			—			—			—			7,197			3,985
Interest expense	(18,664		)	(18,301		)	(22,639		)	(23,559		)	(22,347		)	(83,163		)	(89,074		)
COPT’s share of interest expense of unconsolidated real estate JV	(267		)	(208		)	—			—			—			(475		)	—
Income tax (expense) benefit	(272		)	21			(1		)	8			(46		)	(244		)	(199		)
FFO - per NAREIT (1)	$	61,673		$	53,250		$	40,056		$	43,470		$	35,138		$	198,449		$	268,951

(1) Please refer to the section entitled “Definitions” for a definition of this measure.
(2) See page 33 for a schedule of the related components.

Corporate Office Properties Trust Supplementary Reconciliations of Non-GAAP Measures (continued) (dollars in thousands)

	Three Months Ended															Year Ended
	12/31/16			9/30/16			6/30/16			3/31/16			12/31/15			12/31/16			12/31/15
Total interest expense	$	18,664		$	18,301		$	22,639		$	23,559		$	22,347		$	83,163		$	89,074
Less: Amortization of deferred financing costs	(1,093		)	(1,126		)	(1,178		)	(1,176		)	(1,127		)	(4,573		)	(4,466		)
Less: Amortization of net debt discounts and prem., net of amounts capitalized	(336		)	(332		)	(325		)	(319		)	(317		)	(1,312		)	(1,166		)
Less: Gain (loss) on interest rate derivatives	725			1,523			(319		)	(1,551		)	(386		)	378			(386		)
Less: Interest expense on debt in default extinguished via conveyance of properties	—			—			—			—			—			—			(11,224		)
COPT’s share of interest expense of unconsolidated real estate JV, excluding deferred financing costs	261			204			—			—			—			465			—
Denominator for interest coverage	18,221			18,570			20,817			20,513			20,517			78,121			71,832
Scheduled principal amortization	941			922			1,732			1,800			1,717			5,395			6,728
Denominator for debt service coverage	19,162			19,492			22,549			22,313			22,234			83,516			78,560
Capitalized interest	1,419			1,242			1,309			1,753			1,510			5,723			7,151
Preferred share dividends - redeemable non-convertible	3,640			3,552			3,553			3,552			3,553			14,297			14,210
Preferred unit distributions	165			165			165			165			165			660			660
Denominator for fixed charge coverage	$	24,386		$	24,451		$	27,576		$	27,783		$	27,462		$	104,196		$	100,581

Preferred share dividends	$	3,640		$	3,552		$	3,553		$	3,552		$	3,553		$	14,297		$	14,210
Preferred unit distributions	165			165			165			165			165			660			660
Common share dividends - unrestricted shares	26,991			25,963			25,938			25,919			25,895			104,811			103,552
Common share dividends - restricted shares	100			105			96			118			103			419			446
Common unit distributions	987			988			1,004			1,011			1,011			3,990			4,046
Total dividends/distributions	$	31,883		$	30,773		$	30,756		$	30,765		$	30,727		$	124,177		$	122,914

Common share dividends - unrestricted shares	$	26,991		$	25,963		$	25,938		$	25,919		$	25,895		$	104,811		$	103,552
Common unit distributions	987			988			1,004			1,011			1,011			3,990			4,046
Dividends and distributions for payout ratios	$	27,978		$	26,951		$	26,942		$	26,930		$	26,906		$	108,801		$	107,598

Corporate Office Properties Trust Supplementary Reconciliations of Non-GAAP Measures (continued) (dollars in thousands)

	Three Months Ended
	12/31/16			9/30/16			6/30/16			3/31/16			12/31/15
Total Assets	$	3,780,885		$	3,634,194		$	3,841,692		$	3,937,908		$	3,909,312
Accumulated depreciation	706,385			681,476			678,827			713,283			700,363
Accumulated depreciation included in assets held for sale	9,566			22,938			76,653			33,143			18,317
Accumulated amort. of real estate intangibles and deferred leasing costs	210,692			201,414			199,038			198,552			195,506
Accumulated amortization of real estate intangibles and deferred leasing costs included in assets held for sale	11,575			21,469			27,206			20,655			17,456
COPT’s share of liabilities of unconsolidated real estate JV	29,873			30,013			—			—			—
COPT’s share of accumulated depreciation and amortization of unconsolidated real estate JV	938			375			—			—			—
Less: Cash and cash equivalents	(209,863		)	(47,574		)	(13,317		)	(62,489		)	(60,310		)
COPT’s share of cash of unconsolidated real estate JV	(283		)	(444		)	—			—			—
Adjusted book	$	4,539,768		$	4,543,861		$	4,810,099		$	4,841,052		$	4,780,644

Gross debt (page 29)	$	1,950,229		$	1,921,219		$	2,112,700		$	2,158,880		$	2,097,230
Less: Cash and cash equivalents	(209,863		)	(47,574		)	(13,317		)	(62,489		)	(60,310		)
COPT’s share of cash of unconsolidated real estate JV	(283		)	(444		)	—			—			—
Net debt	$	1,740,083		$	1,873,201		$	2,099,383		$	2,096,391		$	2,036,920
Preferred equity	207,883			207,883			207,883			207,883			207,883
Net debt plus preferred equity	$	1,947,966		$	2,081,084		$	2,307,266		$	2,304,274		$	2,244,803

We believe that the measures defined below that are not determined in accordance with generally accepted accounting principles (“GAAP”) are helpful to investors in measuring our performance and comparing it to that of other real estate investment trusts (“REITs”). Since these measures exclude certain items includable in their respective most comparable GAAP measures, reliance on the measures has limitations; management compensates for these limitations by using the measures simply as supplemental measures that are weighed in balance with other GAAP and non-GAAP measures. These measures should not be used as an alternative to the respective most comparable GAAP measures when evaluating our financial performance or to cash flow from operating, investing and financing activities when evaluating our liquidity or ability to make cash distributions or pay debt service.

Defined as total assets presented on our consolidated balance sheet excluding the effect of cash and cash equivalents, accumulated depreciation on real estate properties, accumulated amortization of intangible assets on real estate acquisitions, accumulated amortization of deferred leasing costs, unconsolidated real estate joint venture cash and cash equivalents, liabilities and accumulated depreciation and amortization (of real estate intangibles and deferred leasing costs) allocable to our ownership interest in the joint venture and the effect of properties serving as collateral for debt in default that we extinguished (or intend to extinguish) via conveyance of such properties.

Adjusted EBITDA is net income (loss) adjusted for the effects of interest expense, depreciation and amortization, impairment losses, gain on sales of properties, gain or loss on early extinguishment of debt, net gain on unconsolidated entities, operating property acquisition costs, loss on interest rate derivatives, income taxes, business development expenses, demolition costs on redevelopment properties and executive transition costs, and excluding the effect of properties that served as collateral for debt in default that we extinguished via conveyance of such properties. Adjusted EBITDA also includes adjustments to net income for the effects of the items noted above pertaining to an unconsolidated real estate JV that was allocable to our ownership interest in the JV. While EBITDA (earnings before interest, taxes, depreciation and amortization) is a universally-defined supplemental measure, Adjusted EBITDA incorporates additional adjustments for gains and losses from investing and financing activities and certain other items that we believe are not closely correlated to (or associated with) our operating performance. We believe that adjusted EBITDA is a useful supplemental measure for assessing our un-levered performance. We believe that net income is the most directly comparable GAAP measure to adjusted EBITDA.

This measure is FFO adjusted to subtract (1) preferred share dividends, (2) income attributable to noncontrolling interests through ownership of preferred units in Corporate Office Properties, L.P. (the “Operating Partnership”) or interests in other consolidated entities not owned by us, (3) depreciation and amortization allocable to noncontrolling interests in other consolidated entities, (4) Basic FFO allocable to restricted shares and (5) issuance costs associated with redeemed preferred shares. With these adjustments, Basic FFO represents FFO available to common shareholders and holders of common units in the Operating Partnership (“common units”). Common units are substantially similar to our common shares of beneficial interest (“common shares”) and are exchangeable into common shares, subject to certain conditions. We believe that Basic FFO is useful to investors due to the close correlation of common units to common shares. We believe that net income is the most directly comparable GAAP measure to Basic FFO.

Defined as NOI from real estate operations adjusted to eliminate the effects of: straight-line rental adjustments, amortization of tenant incentives, amortization of acquisition intangibles included in FFO and NOI (including above- and below-market leases and above- or below-market cost arrangements), lease termination fees from tenants to terminate their lease obligations prior to the end of the agreed upon lease terms and rental revenue recognized under GAAP resulting from landlord assets funded by tenants. Cash NOI also includes adjustments to NOI from real estate operations for the effects of the items noted above pertaining to an unconsolidated real estate JV that were allocable to our ownership interest in the JV. Under GAAP, rental revenue is recognized evenly over the term of tenant leases (through straight-line rental adjustments and amortization of tenant incentives), which, given the long term nature of our leases, does not align with the economics of when tenant payments are due to us under the arrangements. Also under GAAP, when a property is acquired, we allocate the acquisition to certain intangible components, which are then amortized into NOI over their estimated lives, even though the resulting revenue adjustments are not reflective of our lease economics. In addition, revenue from lease termination fees and tenant-funded landlord improvements, absent an adjustment from us, would result in large one-time lump sum amounts in Cash NOI that we do not believe are reflective of a property’s long-term value. We believe that Cash NOI is a useful supplemental measure of operating performance for a REIT’s operating real estate because it makes adjustments to NOI for the above stated items to be more reflective of the economics of when tenant payments are due to us under our leases and the value of our properties. As is the case with NOI, the measure is useful in our opinion in evaluating and comparing the performance of geographic segments, same-office property groupings and individual properties. We believe that operating income, as reported on our consolidated statements of operations, is the most directly comparable GAAP measure to Cash NOI.

Defined as Diluted FFO, as adjusted for comparability, adjusted for the following: (1) the elimination of the effect of (a) noncash rental revenues and property operating expenses (comprised of straight-line rental adjustments, which includes the amortization of recurring tenant incentives, and amortization of acquisition intangibles included in FFO and NOI, both of which are described under “Cash NOI” above), (b) share-based compensation, net of amounts capitalized, (c) amortization of deferred financing costs, (d) amortization of debt discounts and premiums and (e) amortization of settlements of debt hedges; and (2) replacement capital expenditures (defined below). Diluted AFFO also includes adjustments to Diluted FFO, as adjusted for comparability for the effects of the items noted above pertaining to an unconsolidated real estate JV that were allocable to our ownership interest in the JV. We believe that Diluted AFFO is a useful supplemental measure of operating performance for a REIT because it incorporates adjustments for: certain revenue and expenses that are not associated with cash to or from us during the period; and certain capital expenditures for operating properties incurred during the period that do require cash outlays. We believe that net income is the most directly comparable GAAP measure to Diluted AFFO.

Diluted FFO is Basic FFO adjusted to add back any changes in Basic FFO that would result from the assumed conversion of securities that are convertible or exchangeable into common shares. The computation of Diluted FFO assumes the conversion of common units in the Operating Partnership but does not assume the conversion of other securities that are convertible into common shares if the conversion of those securities would increase Diluted FFO per share in a given period. We believe that Diluted FFO is useful to investors because it is the numerator used to compute Diluted FFO per share, discussed below. We believe that net income is the most directly comparable GAAP measure to Diluted FFO.

Defined as Diluted FFO or FFO adjusted to exclude: operating property acquisition costs; gains on sales of, and impairment losses on, properties other than previously depreciated operating properties; gain or loss on early extinguishment of debt; FFO associated with properties that secured non-recourse debt on which we defaulted and, subsequently, extinguished via conveyance of such properties (including property NOI, interest expense and gains on debt extinguishment); loss on interest rate derivatives; demolition costs on redevelopment properties; executive transition costs (including separation related compensation and replacement recruitment costs for Vice President level positions and above); and accounting charges for original issuance costs associated with redeemed preferred shares. Diluted FFO, as adjusted for comparability also includes adjustments to Diluted FFO for the effects of the items noted above pertaining to an unconsolidated real estate JV that were allocable to our ownership interest in the JV. We believe this to be a useful supplemental measure alongside Diluted FFO as it excludes gains and losses from certain investing and financing activities and certain other items that we believe are not closely correlated to (or associated with) our operating performance. The adjustment for FFO associated with properties securing non-recourse debt on which we defaulted pertains to the periods subsequent to our default on the loan’s payment terms, which was the result of our decision to not support payments on the loan since the estimated fair value of the properties was less than the loan balance. While we continued as the legal owner of the properties during this period, all cash flows produced by them went directly to the lender and we did not fund any debt service shortfalls, which included incremental additional interest under the default rate. We believe that net income is the most directly comparable GAAP measure to this non-GAAP measure.

Diluted FFO per share is (1) Diluted FFO divided by (2) the sum of the (a) weighted average common shares outstanding during a period, (b) weighted average common units outstanding during a period and (c) weighted average number of potential additional common shares that would have been outstanding during a period if other securities that are convertible or exchangeable into common shares were converted or exchanged. The computation of Diluted FFO per share assumes the conversion of common units in the Operating Partnership but does not assume the conversion of other securities that are convertible into common shares if the conversion of those securities would increase Diluted FFO per share in a given period. We believe that Diluted FFO per share is useful to investors because it provides investors with a further context for evaluating our FFO results in the same manner that investors use earnings per share (“EPS”) in evaluating net income available to common shareholders. We believe that diluted EPS is the most directly comparable GAAP measure to Diluted FFO per share.

Defined as (1) Diluted FFO available to common share and common unit holders, as adjusted for comparability divided by (2) the sum of the (a) weighted average common shares outstanding during a period, (b) weighted average common units outstanding during a period and (c) weighted average number of potential additional common shares that would have been outstanding during a period if other securities that are convertible or exchangeable into common shares were converted or exchanged. The computation of this measure assumes the conversion of common units in the Operating Partnership but does not assume the conversion of other securities that are convertible into common shares if the conversion of those securities would increase the per share measure in a given period. We believe this to be a useful supplemental measure alongside Diluted FFO per share as it excludes gains and losses from investing and financing activities and certain other items that we believe are not closely correlated to (or associated with) our operating performance. We believe that diluted EPS is the most directly comparable GAAP measure.

operating properties on the parcel. FFO also includes adjustments to net income for the effects of the items noted above pertaining to an unconsolidated real estate JV that were allocable to our ownership interest in the JV. We believe that we use the National Association of Real Estate Investment Trust’s (“NAREIT”) definition of FFO, although others may interpret the definition differently and, accordingly, our presentation of FFO may differ from those of other REITs. We believe that FFO is useful to management and investors as a supplemental measure of operating performance because, by excluding gains related to sales of, and impairment losses on, previously depreciated operating properties and excluding real estate-related depreciation and amortization, FFO can help one compare our operating performance between periods. We believe that net income is the most directly comparable GAAP measure to FFO.

Defined as Adjusted EBITDA, as further adjusted for: (1) the removal of NOI pertaining to properties in the quarterly periods in which such properties were sold; and (2) the addition of pro forma adjustments to NOI for properties acquired or placed into service subsequent to the commencement of a quarter made in order to reflect a full quarter of ownership/operations. The measure also includes adjustments to Adjusted EBITDA for the effects of the items noted above pertaining to an unconsolidated real estate JV that were allocable to our ownership interest in the JV. We believe that in-place adjusted EBITDA is a useful supplemental measure of performance for assessing our un-levered performance, as further adjusted for changes in operating properties subsequent to the commencement of a quarter. We believe that net income is the most directly comparable GAAP measure to in-place adjusted EBITDA.

NOI, which is our segment performance measure, includes: consolidated real estate revenues from continuing and discontinued operations; consolidated property operating expenses from continuing and discontinued real estate operations; and the net of revenues and property operating expenses of real estate operations owned through an unconsolidated real estate JV that is allocable to COPT’s ownership interest in the JV. We believe that NOI is an important supplemental measure of operating performance for a REIT’s operating real estate because it provides a measure of the core real estate operations that is unaffected by depreciation, amortization, financing and general, administrative and leasing expenses; we believe this measure is particularly useful in evaluating the performance of geographic segments, same-office property groupings and individual properties. We believe that operating income, as reported on our consolidated statements of operations, is the most directly comparable GAAP measure to NOI.

Replacement capital expenditures are defined as tenant improvements and incentives, building improvements and leasing costs incurred during the period for operating properties that are not (1) items contemplated prior to the acquisition of a property, (2) improvements associated with the expansion of a building or its improvements, (3) renovations to a building which change the underlying classification of the building (for example, from industrial to office or Class C office to Class B office) or (4) capital improvements that represent the addition of something new to the property rather than the replacement of something (for example, the addition of a new heating and air conditioning unit that is not replacing one that was previously there). Replacement capital expenditures excludes expenditures of operating properties included in disposition plans during the period that were already sold or are held for future disposition. The measure also includes replacement capital expenditures of an unconsolidated real estate JV that were allocable to our ownership interest in the JV. For cash tenant incentives not due to the tenant for a period exceeding three months past the date on which such incentives were incurred, we recognize such incentives as replacement capital expenditures in the periods such incentives are due to the tenant. Replacement capital expenditures, which is included in the computation of Diluted AFFO, is intended to represent non-transformative capital expenditures of existing properties held for long-term investment. We believe that the excluded expenditures are more closely associated with our investing activities than the performance of our operating portfolio.

“We executed well on all aspects of our 2016 plan, achieving or slightly exceeding our guidance for key earnings and leverage metrics,” stated Stephen E. Budorick, COPT’s President & Chief Executive Officer. “We also implemented important changes to our portfolio, balance sheet and organization that position us to capitalize on the rising demand for efficient, secure real estate solutions throughout our Defense/IT locations. The federal government is signaling broad support for increased investment in cybersecurity and national security-related defense initiatives, and our portfolio and personnel are uniquely aligned to provide real estate solutions for government and defense contractor tenants supporting these missions.”

COPT is an office REIT that owns, manages, develops and selectively acquires office and data center properties in locations that support United States Government agencies and their contractors, most of whom are engaged in national security, defense and information technology (“IT”) related activities servicing priority missions (“Defense/IT Locations”). We also own a portfolio of Class-A office properties located in select urban/urban-like submarkets within our regional footprint (“Regional Office Properties”). As of December 31, 2016, we derived 87% of core portfolio annualized revenue from Defense/IT Locations and 13% from our Regional Office Properties. As of December 31, 2016, our core portfolio of 152 office properties encompassed 16.3 million square feet and was 94.4% leased.

This press release may contain “forward-looking” statements, as defined in Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, that are based on the Company’s current expectations, estimates and projections about future events and financial trends affecting the Company. Forward-looking statements can be identified by the use of words such as “may,” “will,” “should,” “could,” “believe,” “anticipate,” “expect,” “estimate,” “plan” or other comparable terminology. Forward-looking statements are inherently subject to risks and uncertainties, many of which the Company cannot predict with accuracy and some of which the Company might not even anticipate. Accordingly, the Company can give no assurance that these expectations, estimates and projections will be achieved. Future events and actual results may differ materially from those discussed in the forward-looking statements.



	For the Three Months Ended December 31,						For the Year Ended December 31,
	2016			2015			2016			2015
Revenues
Real estate revenues	$	127,999		$	134,477		$	525,964		$	519,064
Construction contract and other service revenues	13,992			8,848			48,364			106,402
Total revenues	141,991			143,325			574,328			625,466
Expenses
Property operating expenses	47,562			48,498			197,530			194,494
Depreciation and amortization associated with real estate operations	32,929			36,237			132,719			140,025
Construction contract and other service expenses	12,968			7,773			45,481			102,696
Impairment losses	1,554			19,744			101,391			23,289
General and administrative expenses	6,211			6,609			30,095			24,526
Leasing expenses	1,578			1,888			6,458			6,835
Business development expenses and land carry costs	1,747			2,521			8,244			13,507
Total operating expenses	104,549			123,270			521,918			505,372
Operating income	37,442			20,055			52,410			120,094
Interest expense	(18,664		)	(22,347		)	(83,163		)	(89,074		)
Interest and other income	1,567			1,300			5,444			4,517
(Loss) gain on early extinguishment of debt	(1,073		)	(402		)	(1,110		)	85,275
Income (loss) from continuing operations before equity in income of unconsolidated entities and income taxes	19,272			(1,394		)	(26,419		)	120,812
Equity in income of unconsolidated entities	718			10			1,332			62
Income tax expense	(272		)	(46		)	(244		)	(199		)
Income (loss) from continuing operations	19,718			(1,430		)	(25,331		)	120,675
Discontinued operations	—			—			—			156
Income (loss) before gain on sales of real estate	19,718			(1,430		)	(25,331		)	120,831
Gain on sales of real estate	6,885			64,047			40,986			68,047
Net income	26,603			62,617			15,655			188,878
Net (income) loss attributable to noncontrolling interests
Common units in the Operating Partnership (“OP”)	(793		)	(2,172		)	155			(6,403		)
Preferred units in the OP	(165		)	(165		)	(660		)	(660		)
Other consolidated entities	(912		)	(916		)	(3,711		)	(3,515		)
Net income attributable to COPT	24,733			59,364			11,439			178,300
Preferred share dividends	(3,640		)	(3,553		)	(14,297		)	(14,210		)
Issuance costs associated with redeemed preferred shares	(17		)	—			(17		)	—
Net income (loss) attributable to COPT common shareholders	$	21,076		$	55,811		$	(2,875	)	$	164,090
Earnings per share (“EPS”) computation:
Numerator for diluted EPS:
Net income (loss) attributable to common shareholders	$	21,076		$	55,811		$	(2,875	)	$	164,090
Common units in the OP	—			—			—			6,403
Amount allocable to share-based compensation awards	(100		)	(230		)	(419		)	(706		)
Numerator for diluted EPS	$	20,976		$	55,581		$	(3,294	)	$	169,787
Denominator:
Weighted average common shares - basic	95,066			94,164			94,502			93,914
Common units in the OP	—			—			—			3,692
Dilutive effect of share-based compensation awards	76			—			—			61
Weighted average common shares - diluted	95,142			94,164			94,502			97,667
Diluted EPS	$	0.22		$	0.59		$	(0.03	)	$	1.74



	For the Three Months Ended December 31,						For the Year Ended December 31,
	2016			2015			2016			2015
Net income	$	26,603		$	62,617		$	15,655		$	188,878
Real estate-related depreciation and amortization	32,929			36,237			132,719			140,025
Impairment losses on previously depreciated operating properties	1,518			331			83,346			4,110
Gain on sales of previously depreciated operating properties	312			(64,047		)	(33,789		)	(64,062		)
Depreciation and amortization on unconsolidated real estate entities	311			—			518			—
Funds from operations (“FFO”)	61,673			35,138			198,449			268,951
Noncontrolling interests - preferred units in the OP	(165		)	(165		)	(660		)	(660		)
FFO allocable to other noncontrolling interests	(1,085		)	(817		)	(4,020		)	(3,586		)
Preferred share dividends	(3,640		)	(3,553		)	(14,297		)	(14,210		)
Issuance costs associated with redeemed preferred shares	(17		)	—			(17		)	—
Basic and diluted FFO allocable to share-based compensation awards	(208		)	(115		)	(694		)	(1,041		)
Basic and Diluted FFO available to common share and common unit holders (“Diluted FFO”)	56,558			30,488			178,761			249,454
Operating property acquisition costs	—			32			—			4,134
Gain on sales of non-operating properties	(7,197		)	—			(7,197		)	(3,985		)
Impairment losses on non-operating properties	36			19,413			18,045			19,413
(Gain) loss on interest rate derivatives	(725		)	386			(378		)	386
Loss (gain) on early extinguishment of debt	1,073			402			1,110			(85,655		)
Issuance costs associated with redeemed preferred shares	17			—			17			—
Add: Negative FFO of properties conveyed to extinguish debt in default (1)	—			—			—			10,456
Demolition costs on redevelopment properties	—			225			578			1,396
Executive transition costs	431			—			6,454			—
Diluted FFO comparability adjustments allocable to share-based compensation awards	26			(88		)	(73		)	225
Diluted FFO available to common share and common unit holders, as adjusted for comparability	50,219			50,858			197,317			195,824
Straight line rent adjustments	1,294			(2,677		)	1,500			(13,497		)
Straight line rent adjustments - properties in default conveyed	—			—			—			(115		)
Amortization of intangibles included in net operating income	463			365			1,488			1,428
Share-based compensation, net of amounts capitalized	1,174			1,625			5,549			6,574
Amortization of deferred financing costs	1,093			1,127			4,573			4,466
Amortization of net debt discounts, net of amounts capitalized	336			317			1,312			1,166
Replacement capital expenditures	(13,716		)	(20,086		)	(53,102		)	(49,266		)
Diluted AFFO adjustments allocable to other noncontrolling interests	42			63			179			118
Diluted AFFO adjustments on unconsolidated real estate JV	(188		)	—			(329		)	—
Diluted adjusted funds from operations available to common share and common unit holders (“Diluted AFFO”)	$	40,717		$	31,592		$	158,487		$	146,698
Diluted FFO per share	$	0.57		$	0.31		$	1.82		$	2.55
Diluted FFO per share, as adjusted for comparability	$	0.51		$	0.52		$	2.01		$	2.01
Dividends/distributions per common share/unit	$	0.275		$	0.275		$	1.100		$	1.100



	December 31, 2016			December 31, 2015
Balance Sheet Data
Properties, net of accumulated depreciation	$	3,073,362		$	3,349,748
Total assets	3,780,885			3,909,312
Debt, per balance sheet	1,904,001			2,077,752
Total liabilities	2,163,242			2,273,530
Redeemable noncontrolling interest	22,979			19,218
Equity	1,594,664			1,616,564
Net debt to adjusted book	38.3		%	42.6		%

Core Portfolio Data (as of period end) (1)
Number of operating properties	152			157
Total net rentable square feet owned (in thousands)	16,301			17,038
Occupancy %	92.9		%	92.7		%
Leased %	94.4		%	93.9		%



	For the Three Months Ended December 31,				For the Year Ended December 31,
	2016		2015		2016		2015
Payout ratios
Diluted FFO	49.5	%	88.3	%	60.9	%	43.1	%
Diluted FFO, as adjusted for comparability	55.7	%	52.9	%	55.1	%	54.9	%
Diluted AFFO	68.7	%	85.2	%	68.6	%	73.3	%
Adjusted EBITDA fixed charge coverage ratio	3.1	x	2.9	x	3.0	x	3.0	x
Net debt to in-place adjusted EBITDA ratio (2)	5.7	x	6.5	x	N/A		N/A

Reconciliation of denominators for per share measures
Denominator for diluted EPS	95,142		94,164		94,502		97,667
Weighted average common units	3,591		3,677		3,633		—
Anti-dilutive EPS effect of share-based compensation awards	—		—		92		—
Denominator for diluted FFO per share and as adjusted for comparability	98,733		97,841		98,227		97,667



	For the Three Months Ended December 31,						For the Year Ended December 31,
	2016			2015			2016			2015
Reconciliation of common share dividends to dividends and distributions for payout ratios
Common share dividends - unrestricted shares	$	26,991		$	25,895		$	104,811		$	103,552
Common unit distributions	987			1,011			3,990			4,046
Dividends and distributions for payout ratios	$	27,978		$	26,906		$	108,801		$	107,598

Reconciliation of GAAP net income to adjusted earnings before interest, income taxes, depreciation and amortization (“Adjusted EBITDA”) and in-place adjusted EBITDA
Net income	$	26,603		$	62,617		$	15,655		$	188,878
Interest expense on continuing operations	18,664			22,347			83,163			89,074
Income tax expense	272			46			244			199
Real estate-related depreciation and amortization	32,929			36,237			132,719			140,025
Depreciation of furniture, fixtures and equipment	512			597			2,151			2,206
Impairment losses	1,554			19,744			101,391			23,523
Loss (gain) on early extinguishment of debt on continuing and discontinued operations	1,073			402			1,110			(85,655		)
Gain on sales of operating properties	312			(64,047		)	(33,789		)	(64,062		)
Gain on sales of non-operational properties	(7,197		)	—			(7,197		)	(3,985		)
Net (gain) loss on investments in unconsolidated entities included in interest and other income	(117		)	6			(149		)	127
Business development expenses	1,167			1,512			4,823			4,775
Operating property acquisition costs	—			32			—			4,134
EBITDA from properties conveyed to extinguish debt in default	—			—			—			(768		)
Demolition costs on redevelopment properties	—			225			578			1,396
Adjustments from unconsolidated real estate JV	578			—			993			—
Executive transition costs	431			—			6,454			—
Adjusted EBITDA	$	76,781		$	79,718		$	308,146		$	299,867
Proforma net operating income adjustment for property changes within period	39			(1,738		)
In-place adjusted EBITDA	$	76,820		$	77,980

Reconciliation of interest expense to the denominators for fixed charge coverage-Adjusted EBITDA
Interest expense	$	18,664		$	22,347		$	83,163		$	89,074
Less: Amortization of deferred financing costs	(1,093		)	(1,127		)	(4,573		)	(4,466		)
Less: Amortization of net debt discount, net of amounts capitalized	(336		)	(317		)	(1,312		)	(1,166		)
Less: Gain (loss) on interest rate derivatives	725			(386		)	378			(386		)
Less: Interest expense on debt in default extinguished via conveyance of properties	—			—			—			(11,224		)
COPT’s share of interest expense of unconsolidated real estate JV, excluding deferred financing costs	261			—			465			—
Scheduled principal amortization	941			1,717			5,395			6,728
Capitalized interest	1,419			1,510			5,723			7,151
Preferred share dividends	3,640			3,553			14,297			14,210
Preferred unit distributions	165			165			660			660
Denominator for fixed charge coverage-Adjusted EBITDA	$	24,386		$	27,462		$	104,196		$	100,581



	For the Three Months Ended December 31,						For the Year Ended December 31,
	2016			2015			2016			2015
Reconciliations of tenant improvements and incentives, capital improvements and leasing costs for operating properties to replacement capital expenditures
Tenant improvements and incentives	$	8,000		$	6,836		$	45,020		$	24,244
Building improvements	7,064			16,674			22,026			28,643
Leasing costs	1,387			3,518			9,365			8,504
Less: Excluded tenant improvements and incentives	871			(393		)	(14,073		)	(1,438		)
Less: Excluded building improvements	(3,606		)	(6,551		)	(8,817		)	(9,879		)
Less: Excluded leasing costs	—			2			(419		)	(808		)
Replacement capital expenditures	$	13,716		$	20,086		$	53,102		$	49,266

Same office property cash NOI	$	63,938		$	61,359		$	247,705		$	237,860
Straight line rent adjustments and lease incentive amortization	(1,829		)	(177		)	(8,892		)	3,297
Add: Amortization of deferred market rental revenue	(1		)	28			89			99
Less: Amortization of below-market cost arrangements	(218		)	(259		)	(873		)	(1,034		)
Add: Lease termination fee, gross	601			416			2,280			2,366
Add: Cash NOI on tenant-funded landlord assets	1,370			547			7,160			937
Same office property NOI	$	63,861		$	61,914		$	247,469		$	243,525



	December 31, 2016			December 31, 2015
Reconciliation of total assets to adjusted book
Total assets	$	3,780,885		$	3,909,312
Accumulated depreciation	706,385			700,363
Accumulated depreciation included in assets held for sale	9,566			18,317
Accumulated amortization of real estate intangibles and deferred leasing costs	210,692			195,506
Accumulated amortization of real estate intangibles and deferred leasing costs included in assets held for sale	11,575			17,456
COPT’s share of liabilities of unconsolidated real estate JV	29,873			—
COPT’s share of accumulated depreciation and amortization of unconsolidated real estate JV	938			—
Less: Cash and cash equivalents	(209,863		)	(60,310		)
COPT’s share of cash of unconsolidated real estate JV	(283		)	—
Adjusted book	$	4,539,768		$	4,780,644

Reconciliation of debt outstanding to net debt
Debt outstanding (excluding net debt discounts and deferred financing costs)	$	1,950,229		$	2,097,230
Less: Cash and cash equivalents	(209,863		)	(60,310		)
COPT’s share of cash of unconsolidated real estate JV	(283		)	—
Net debt	$	1,740,083		$	2,036,920



Corporate Office Properties Trust	Maryland	1-14023	23-2947217
	(State or other jurisdiction of	(Commission File	(IRS Employer
	incorporation or organization)	Number)	Identification No.)

Corporate Office Properties, L.P.	Delaware	333-189188	23-2930022
	(State or other jurisdiction of	(Commission File	(IRS Employer
	incorporation or organization)	Number)	Identification No.)



o		Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o		Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o		Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o		Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))



(a)	Financial Statements of Businesses Acquired

	None

(b)	Pro Forma Financial Information

	None

(c)	Shell Company Transactions

	None

(d)	Exhibits



Exhibit Number		Exhibit Title
99.1		Corporate Office Properties Trust earnings release and supplemental information for the period ended December 31, 2016, including the press release dated February 9, 2017



	CORPORATE OFFICE PROPERTIES TRUST		CORPORATE OFFICE PROPERTIES, L.P.
			By: Corporate Office Properties Trust,
			its General Partner

	/s/ Anthony Mifsud		/s/ Anthony Mifsud
	Anthony Mifsud		Anthony Mifsud
	Executive Vice President and Chief Financial Officer		Executive Vice President and Chief Financial Officer

Dated:	February 9, 2017	Dated:	February 9, 2017



Management:	Investor Relations:
Stephen E. Budorick, President & CEO	Stephanie M. Krewson-Kelly, VP of IR
Paul R. Adkins, EVP & COO	443-285-5453, stephanie.kelly@copt.com
Anthony Mifsud, EVP & CFO	Michelle Layne, Manager of IR
	443-285-5452, michelle.layne@copt.com


(1)	As of 12/31/2016, our total portfolio included 9 properties held for sale totaling 603,000 square feet that were 92.4% occupied and 94.0% leased. Our total portfolio and core portfolio included six properties owned through an unconsolidated joint venture totaling 962,000 square feet that were 100% occupied and leased.


(2)	Leased to tenants with further expansion rights of up to a combined 15.93 megawatts as of December 31, 2016. The leased megawatts reported above excludes approximately one megawatt contracted for use under management agreements.


(2)	We redeemed all of our Series K Preferred Shares effective January 21, 2017. Since we notified holders of such shares in December 2016 that we were redeeming the shares, we present the liquidation preference as a liability as of 12/31/16.


(1)	This presentation sets forth Core Portfolio data by segment followed by data for the remainder of the portfolio.


(2)	Represents Defense/IT Locations and Regional Office properties excluding properties held for sale.


(3)	Includes properties in locations that support United States Government agencies and their contractors, most of whom are engaged in national security, defense and IT related activities servicing what we believe are growing, durable, priority missions.


(4)	See page 33 for additional disclosure regarding an unconsolidated real estate joint venture.


(5)	Includes office properties located in select urban/urban-like submarkets within our regional footprint with durable Class-A office fundamentals and characteristics.


(2)	Excludes Annualized Rental Revenue from our wholesale data center, DC-6, of $19.9 million as of 12/31/16. With regard to properties owned through unconsolidated real estate joint ventures, we include the portion of Annualized Rental Revenue allocable to COPT’s ownership interest.


(1)	Percentages calculated based on operational square feet.


(3)	Properties continually owned and 100% operational since at least 1/1/15, excluding properties disposed or held for sale.


(4)	Newly constructed or redeveloped properties placed in service that were not fully operational by 1/1/15.


(6)	Represents total information pertaining to properties owned through an unconsolidated real estate joint venture except for the amounts reported for Annualized Rental Revenue and NOI from real estate operations, which represent the portion allocable to COPT’s ownership interest. See page 34 for additional disclosure regarding this joint venture.


(7)	The carrying value of operating property assets held for sale as of 12/31/16 totaled $81.2 million.


(1)	Represents the change between the current period and the same period in the prior year.


(1)	Activity is exclusive of owner occupied space and leases with less than a one-year term. Weighted average lease term was calculated assuming no exercise of any existing early termination rights. Committed costs for leasing are reported above in the period of lease execution. Actual capital expenditures for leasing are reported on page 9 in the period such costs are incurred.



Year of Lease Expiration	Number of Leases Expiring	Raised Floor Square Footage	Critical Load(MW)	Total Annual Rental Revenue of Expiring Leases (3)(000's)
2017	1	9	1.00	$	1,620
2018	2	1	0.26	539
2019	1	6	1.00	2,274
2020	1	17	11.25	13,426
2021	1	2	0.35	532
2022	1	6	1.00	1,559
			14.86	$	19,950


(2)	A number of our leases are subject to certain early termination provisions. The year of lease expiration was computed assuming no exercise of such early termination rights.


(3)	Total Annualized Rental Revenue is the monthly contractual base rent as of 12/31/16 multiplied by 12 plus the estimated annualized expense reimbursements under existing leases. The amounts reported above for Annualized Rental Revenue include the portion of properties owned through an unconsolidated real estate joint venture that was allocable to COPT’s ownership interest.


(1)	Includes properties under, or contractually committed for, construction as of 12/31/16 and 310 Sentinel Way and NOVA Office B, two properties that were complete but held for future lease to the United States Government.


(2)	Cost includes land, construction, leasing costs and allocated portion of structured parking and other shared infrastructure, if applicable.


(3)	Anticipated operational date is the earlier of the estimated date when leases have commenced on 100% of a property’s space or one year from the cessation of major construction activities.


(4)	Although classified as under construction, 11,000 square feet were operational as of 12/31/16.


(1)	Cost includes construction, leasing costs and allocated portion of shared infrastructure.


(3)	Although classified as under redevelopment, 8,000 square feet were operational as of 12/31/16; NOI for this property was $20,000 and cash NOI was $19,000 for the three months ended 12/31/16.


*	This represents a 1.2 acre retail pad site under ground lease for 20 years to a national food service provider that was placed in service in December 2016.


(1)	This land inventory schedule excludes all properties listed as construction or redevelopment as detailed on pages 24 and 25, and includes properties under ground lease to us.


(2)	Includes land owned under a long-term master lease agreement to LW Redstone Company, a consolidated joint venture (see page 32). As this land is developed in the future, the joint venture will execute site-specific leases under the master lease agreement. Rental payments will commence under the site-specific leases as cash rents under tenant leases commence at the respective properties.


(1)	The Company’s $800 million line of credit matures in May 2019 and may be extended for two six-month periods, at our option.


(4)	These properties are owned through consolidated joint ventures.