Document

Exhibit 99.1

COPT Defense Properties

Supplemental Information + Earnings Release - Unaudited

For the Period Ended 9/30/26



OVERVIEW	Summary Description	1
	Equity Research Coverage	2
	Selected Financial Summary Data	3
	Selected Portfolio Data	5


FINANCIAL STATEMENTS	Consolidated Balance Sheets	6
	Consolidated Statements of Operations	7
	Funds from Operations	8
	Diluted Share + Unit Computations	9
	Adjusted Funds from Operations	10
	EBITDAre + Adjusted EBITDA	11


PORTFOLIO INFORMATION	Properties by Segment	12
	Consolidated Real Estate Revenues + NOI by Segment	13
	Cash NOI by Segment	14
	NOI from Real Estate Operations + Occupancy by Property Grouping	15
	Same Property Average Occupancy Rates by Segment	16
	Same Property Period End Occupancy Rates by Segment	16
	Same Property Real Estate Revenues + NOI by Segment	17
	Same Property Cash NOI by Segment	18
	Leasing	19
	Lease Expiration Analysis	21
	202 7 Defense/IT Portfolio Quarterly Lease Expiration Analysis	23
	Top 20 Tenants	24



INVESTING ACTIVIT Y	Summary of Acquisition	25
	Summary of Development Projects	26

	Development Placed in Service	27
	Summary of Land Owned/Controlled	28


CAPITALIZATION	Capitalization Overview	29
	Summary of Outstanding Debt	30
	Debt Analysis	32
	Consolidated Real Estate Joint Ventures	33
	Unconsolidated Real Estate Joint Ventures	34	Please refer to the section entitled “Definitions” for definitions of non-GAAP measures and other terms we use herein that may not be customary or commonly known.


RECONCILIATIONS + DEFINITIONS	Supplementary Reconciliations of Non-GAAP Measures	35
	Definitions	38

EARNINGS RELEASE		i

COPT Defense Properties

Summary Description


THE COMPANY

COPT Defense Properties (the “Company” or “COPT Defense”), an S&P MidCap 400 Company, is a self-managed real estate investment trust (“REIT”) focused on owning, operating, and developing properties in locations proximate to, or sometimes containing, key U.S. Government (“USG”) defense installations and missions (which we refer to herein as our Defense/IT Portfolio). Our tenants include the USG and their defense contractors, who are primarily engaged in priority national security activities, and who generally require mission-critical and high security property enhancements. The ticker symbol under which our common shares are publicly traded on the New York Stock Exchange is “CDP”. As of September 30, 2026, our Defense/IT Portfolio of 202 properties, including 24 owned through unconsolidated joint ventures, encompassed 23.3 million square feet and was 96.2% leased.


MANAGEMENT						INVESTOR RELATIONS
Stephen E. Budorick, President + CEO						Venkat Kommineni, VP
Britt A. Snider, EVP + COO						443.285.5587 \| venkat.kommineni@copt.com
Anthony Mifsud, EVP + CFO
						Michelle Layne, Senior Manager
						443.285.5452 \| michelle.layne@copt.com


CORPORATE CREDIT RATING

Fitch: BBB- Stable | Moody’s: Baa2 Stable | S&P: BBB- Stable


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 and we undertake no obligation to update or supplement any forward-looking statements. The areas of risk that may affect these expectations, estimates, and projections include, but are not limited to, those risks described in Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2025.


1			3Q 2026 Supplemental Information Package

COPT Defense Properties

Equity Research Coverage

FIRM

SENIOR ANALYST

PHONE

BTIG

Tom Catherwood

212.738.6410

tcatherwood@btig.com

Cantor Fitzgerald

Richard Anderson

929.441.6927

richard.anderson@cantor.com

Citigroup Global Markets

Seth Bergey

212.816.2066

seth.bergey@citi.com

Evercore ISI

Steve Sakwa

212.446.9462

steve.sakwa@evercoreisi.com

Green Street

Dylan Burzinski

949.640.8780

dburzinski@greenstreet.com

Jefferies

Joe Dickstein

212.778.8771

jdickstein1@jefferies.com

JP Morgan

Tony Paolone

212.622.6682

anthony.paolone@jpmorgan.com

Truist Securities

Michael Lewis

212.319.5659

michael.r.lewis@truist.com

Wells Fargo Securities

Blaine Heck

410.662.2556

blaine.heck@wellsfargo.com

With the exception of Green Street, the above-listed firms are those whose analysts publish research material on the Company and whose estimates of our FFO per share can be tracked through FactSet. Any opinions, estimates, or forecasts the above analysts make regarding COPT Defense’s future performance are their own and do not represent the views, estimates, or forecasts of COPT Defense’s management.


2			3Q 2026 Supplemental Information Package

COPT Defense Properties

Selected Financial Summary Data

(in thousands, except per share data)



	Page	Three Months Ended										Nine Months Ended
SUMMARY OF RESULTS		9/30/26		6/30/26		3/31/26		12/31/25		9/30/25		9/30/26		9/30/25
Net income	7	$	49,794	$	48,559	$	40,139	$	39,396	$	43,744	$	138,492	$	120,138
NOI from real estate operations	13	$	120,330	$	120,090	$	115,217	$	113,952	$	111,818	$	355,637	$	331,676
Same Property NOI	17	$	114,280	$	114,967	$	110,381	$	110,957	$	111,277	$	339,628	$	330,230
Same Property cash NOI	18	$	110,270	$	112,252	$	106,253	$	106,666	$	106,864	$	328,775	$	312,175
Adjusted EBITDA	11	$	111,390	$	110,680	$	107,832	$	108,223	$	103,771	$	329,902	$	307,616

FFO per NAREIT	8	$	85,805	$	85,002	$	81,838	$	82,371	$	82,090	$	252,645	$	238,589
Diluted AFFO available to common share and unit holders	10	$	65,384	$	69,114	$	65,084	$	57,209	$	63,274	$	199,582	$	177,071
Dividend per common share	N/A	$	0.32	$	0.32	$	0.32	$	0.305	$	0.305	$	0.96	$	0.915

Per share - diluted
EPS	9	$	0.41	$	0.40	$	0.34	$	0.33	$	0.37	$	1.15	$	1.01
FFO - Nareit	9	$	0.71	$	0.71	$	0.69	$	0.70	$	0.69	$	2.11	$	2.02
FFO - as adjusted for comparability	9	$	0.71	$	0.71	$	0.69	$	0.70	$	0.69	$	2.11	$	2.02

Numerators for diluted per share amounts
Diluted EPS	7	$	47,558	$	46,254	$	38,395	$	37,388	$	41,594	$	132,209	$	114,474
Diluted FFO available to common share and unit holders	8	$	83,906	$	83,015	$	80,168	$	80,358	$	80,093	$	247,089	$	233,213
Diluted FFO available to common share and unit holders, as adjusted for comparability	8	$	84,002	$	83,015	$	80,168	$	80,424	$	80,121	$	247,185	$	233,241


3			3Q 2026 Supplemental Information Package

COPT Defense Properties

Selected Financial Summary Data (continued)

(in thousands, except ratios)


	Page	As of or for Three Months Ended										As of and for Nine Months Ended
PAYOUT RATIOS AND CAPITALIZATION		9/30/26		6/30/26		3/31/26		12/31/25		9/30/25		9/30/26	9/30/25
GAAP
Payout ratio
Net income	N/A	74.5%		76.4%		92.5%		89.3%		80.5%		80.4%	87.9%

Capitalization and debt ratios
Total assets	6	$	4,573,242	$	4,515,281	$	4,458,909	$	4,701,790	$	4,351,432

Total equity	6	$	1,596,153	$	1,580,961	$	1,566,641	$	1,562,169	$	1,555,039
Debt per balance sheet	6	$	2,579,733	$	2,592,436	$	2,546,958	$	2,767,834	$	2,443,518
Debt to assets	32	56.4%		57.4%		57.1%		58.9%		56.2%		N/A	N/A
Net income to interest expense ratio	32	2.0x		2.0x		1.7x		1.6x		2.1x		1.9x	1.9x
Debt to net income ratio	32	13.0x		13.3x		15.9x		17.6x		14.0x		N/A	N/A

Non-GAAP
Payout ratios
Diluted FFO	N/A	43.9%		44.4%		46.0%		43.5%		43.7%		44.8%	45.0%
Diluted FFO - as adjusted for comparability	N/A	43.9%		44.4%		46.0%		43.5%		43.7%		44.7%	45.0%
Diluted AFFO	N/A	56.4%		53.3%		56.6%		61.2%		55.3%		55.4%	59.3%


Capitalization and debt ratios
Total Market Capitalization	29	$	6,469,058	$	6,829,549	$	6,112,751	$	5,997,335	$	5,814,654
Total Equity Market Capitalization	29	$	3,870,058	$	4,216,509	$	3,543,847	$	3,206,035	$	3,352,013
Net debt	37	$	2,648,656	$	2,662,801	$	2,614,344	$	2,589,666	$	2,512,124
Net debt to adjusted book	32	39.9%		40.8%		40.6%		40.5%		40.2%		N/A	N/A



Adjusted EBITDA fixed charge coverage ratio	32	4.4x		4.4x		4.3x		4.3x		4.8x		4.3x	4.8x

Net debt to in-place adjusted EBITDA ratio	32	5.9x		6.0x		6.1x		5.9x		6.1x		N/A	N/A

Net debt adjusted for fully-leased investment properties to in-place adjusted EBITDA ratio	32	5.6x		5.9x		5.9x		5.8x		5.8x		N/A	N/A


4			3Q 2026 Supplemental Information Package

COPT Defense Properties

Selected Portfolio Data (1)


	9/30/26		6/30/26		3/31/26		12/31/25		9/30/25
# of Properties
Total Portfolio	208		208		207		207		204
Consolidated Portfolio	184		184		183		183		180
Defense/IT Portfolio	202		202		201		201		198
Same Property	203		203		203		203		203

% Occupied
Total Portfolio	94.0	%	94.1	%	94.4	%	94.0	%	93.9	%
Consolidated Portfolio	92.8	%	92.9	%	93.2	%	92.8	%	92.6	%
Defense/IT Portfolio	95.2	%	95.1	%	95.6	%	95.5	%	95.4	%
Same Property	93.9	%	94.5	%	94.2	%	93.9	%	93.9	%

% Leased
Total Portfolio	95.0	%	95.6	%	95.2	%	95.3	%	95.7	%
Consolidated Portfolio	94.0	%	94.7	%	94.3	%	94.3	%	94.8	%
Defense/IT Portfolio	96.2	%	96.4	%	96.4	%	96.5	%	97.0	%
Same Property	94.9	%	95.4	%	95.1	%	95.4	%	95.7	%

Square Feet (in thousands)
Total Portfolio	25,303		25,303		25,155		25,147		24,585
Consolidated Portfolio	21,008		21,008		20,859		20,851		20,290
Defense/IT Portfolio	23,316		23,316		23,167		23,159		22,597
Same Property	24,557		24,557		24,557		24,557		24,557

(1)Except for the Consolidated Portfolio, includes properties owned through unconsolidated real estate JVs (see page 34).


5			3Q 2026 Supplemental Information Package

COPT Defense Properties

Consolidated Balance Sheets

(in thousands)


	9/30/26		6/30/26		3/31/26		12/31/25		9/30/25
Assets
Properties, net
Operating properties, net	$	3,501,226	$	3,521,326	$	3,494,556	$	3,500,087	$	3,372,672
Development and redevelopment in progress, including land (1)	182,960		113,632		120,936		95,284		140,091
Land held (1)	177,212		178,510		187,484		188,106		213,093
Total properties, net	3,861,398		3,813,468		3,802,976		3,783,477		3,725,856
Property - operating lease right-of-use assets	45,882		47,405		48,906		50,383		51,838

Assets held for sale	—		11,194		—		—		—
Cash and cash equivalents	24,262		24,157		28,580		274,986		23,687
Investment in unconsolidated real estate joint ventures	35,771		35,521		35,818		36,368		36,301
Accounts receivable, net	53,394		53,567		51,907		58,185		38,931
Deferred rent receivable	185,416		183,463		182,647		177,921		173,758
Lease incentives, net	75,133		72,508		71,879		72,347		68,263
Investment in sales-type leases, net	48,214		48,250		5,178		3,830		3,999
Deferred leasing costs, net	78,691		76,113		76,430		75,052		72,272
Investing receivables, net	66,551		72,637		69,922		69,856		79,772


Prepaid expenses and other assets, net	98,530		76,998		84,666		99,385		76,755
Total assets	$	4,573,242	$	4,515,281	$	4,458,909	$	4,701,790	$	4,351,432
Liabilities and equity
Liabilities
Debt	$	2,579,733	$	2,592,436	$	2,546,958	$	2,767,834	$	2,443,518
Accounts payable and accrued expenses	166,525		115,668		116,954		147,200		135,331
Rents received in advance and security deposits	37,184		37,541		40,252		37,914		36,988
Dividends and distributions payable	37,119		37,111		37,102		35,205		35,220
Deferred revenue associated with operating leases	48,105		50,560		47,874		47,714		43,671

Property - operating lease liabilities	41,178		42,485		43,768		45,012		46,203


Other liabilities	42,214		33,638		34,230		33,236		31,245
Total liabilities	2,952,058		2,909,439		2,867,138		3,114,115		2,772,176
Redeemable noncontrolling interest	25,031		24,881		25,130		25,506		24,217
Equity
COPT Defense’s shareholders’ equity

Common shares	1,134		1,134		1,134		1,132		1,130
Additional paid-in capital	2,507,083		2,503,639		2,500,341		2,502,661		2,497,736
Cumulative distributions in excess of net income	(965,103)		(976,558)		(986,706)		(988,957)		(991,935)
Accumulated other comprehensive income (loss)	—		9		34		(61)		79
Total COPT Defense’s shareholders’ equity	1,543,114		1,528,224		1,514,803		1,514,775		1,507,010
Noncontrolling interests in subsidiaries
Common units in the Operating Partnership	34,513		34,296		33,687		29,317		33,024

Other consolidated entities	18,526		18,441		18,151		18,077		15,005
Total noncontrolling interests in subsidiaries	53,039		52,737		51,838		47,394		48,029
Total equity	1,596,153		1,580,961		1,566,641		1,562,169		1,555,039
Total liabilities, redeemable noncontrolling interest, and equity	$	4,573,242	$	4,515,281	$	4,458,909	$	4,701,790	$	4,351,432

(1)Refer to pages 26 and 28 for detail.


6			3Q 2026 Supplemental Information Package

COPT Defense Properties

Consolidated Statements of Operations

(in thousands)


	Three Months Ended										Nine Months Ended
	9/30/26		6/30/26		3/31/26		12/31/25		9/30/25		9/30/26		9/30/25
Revenues
Lease revenue	$	193,482	$	188,806	$	192,971	$	185,002	$	178,272	$	575,259	$	529,178
Other property revenue	1,853		1,820		1,625		1,483		2,038		5,298		6,186
Construction contract and other service revenues	13,424		6,766		6,041		10,872		8,485		26,231		31,202
Total revenues	208,759		197,392		200,637		197,357		188,795		606,788		566,566
Operating expenses
Property operating expenses	77,217		72,586		81,435		74,616		70,356		231,238		209,311
Depreciation and amortization associated with real estate operations	42,966		42,289		42,685		42,263		40,631		127,940		119,563
Construction contract and other service expenses	12,763		6,023		5,552		10,432		7,952		24,338		29,530

General and administrative expenses	9,047		9,237		8,456		7,943		8,483		26,740		24,833
Leasing expenses	2,780		3,089		2,994		2,896		2,449		8,863		8,061
Business development expenses and land carry costs	729		938		1,199		904		1,098		2,866		3,203
Total operating expenses	145,502		134,162		142,321		139,054		130,969		421,985		394,501
Interest expense	(24,439)		(24,444)		(23,996)		(24,324)		(20,894)		(72,879)		(62,336)
Interest and other income, net	2,984		2,973		3,955		5,301		2,591		9,912		5,382
Gain on sales of real estate	7,673		6,442		582		32		3,018		14,697		3,318

Loss on early extinguishment of debt	—		—		—		(66)		—		—		—

Income before equity in income of unconsolidated entities and income taxes	49,475		48,201		38,857		39,246		42,541		136,533		118,429
Equity in income of unconsolidated entities	415		392		1,406		265		1,815		2,213		2,541
Income tax expense	(96)		(34)		(124)		(115)		(612)		(254)		(832)


Net income	49,794		48,559		40,139		39,396		43,744		138,492		120,138
Net income attributable to noncontrolling interests
Common units in the Operating Partnership	(1,069)		(1,038)		(812)		(743)		(924)		(2,919)		(2,496)

Other consolidated entities	(984)		(1,084)		(771)		(1,152)		(1,093)		(2,839)		(2,828)



Net income attributable to common shareholders	$	47,741	$	46,437	$	38,556	$	37,501	$	41,727	$	132,734	$	114,814
Amount allocable to share-based compensation awards	(183)		(183)		(161)		(113)		(133)		(525)		(340)



Numerator for diluted EPS	$	47,558	$	46,254	$	38,395	$	37,388	$	41,594	$	132,209	$	114,474


7			3Q 2026 Supplemental Information Package

COPT Defense Properties

Funds from Operations

(in thousands)


	Three Months Ended										Nine Months Ended
	9/30/26		6/30/26		3/31/26		12/31/25		9/30/25		9/30/26		9/30/25
Net income	$	49,794	$	48,559	$	40,139	$	39,396	$	43,744	$	138,492	$	120,138
Real estate-related depreciation and amortization	42,966		42,289		42,685		42,263		40,631		127,940		119,563

Gain on sales of real estate	(7,673)		(6,442)		(582)		(32)		(3,018)		(14,697)		(3,318)
Depreciation and amortization on unconsolidated real estate JVs (1)	718		726		742		744		733		2,186		2,206
Gain on sale of real estate on unconsolidated real estate JV (1)	—		(130)		(1,146)		—		—		(1,276)		—


FFO - per Nareit (2)	85,805		85,002		81,838		82,371		82,090		252,645		238,589



FFO allocable to other noncontrolling interests (3)	(1,342)		(1,433)		(1,131)		(1,524)		(1,502)		(3,906)		(4,042)
Basic FFO allocable to share-based compensation awards	(620)		(617)		(603)		(543)		(548)		(1,840)		(1,628)
Basic FFO available to common share and common unit holders (2)	83,843		82,952		80,104		80,304		80,040		246,899		232,919


Diluted FFO adjustments allocable to share-based compensation awards	63		63		64		54		53		190		294
Diluted FFO available to common share and common unit holders - per Nareit (2)	83,906		83,015		80,168		80,358		80,093		247,089		233,213
Loss on early extinguishment of debt	—		—		—		66		—		—		—
Loss on early extinguishment of debt on unconsolidated real estate JVs (1)	—		—		—		—		28		—		28



Demolition costs on nonrecurring improvements	97		—		—		—		—		97		—





Diluted FFO comparability adjustments allocable to share-based compensation awards	(1)		—		—		—		—		(1)		—
Diluted FFO available to common share and common unit holders, as adjusted for comparability (2)	$	84,002	$	83,015	$	80,168	$	80,424	$	80,121	$	247,185	$	233,241

(1)See page 34 for additional disclosure regarding our unconsolidated real estate JVs.

(2)Refer to the section entitled “Definitions” for a definition of this measure.

(3)Pertains to noncontrolling interests in consolidated real estate JVs reported on page 33.


8			3Q 2026 Supplemental Information Package

COPT Defense Properties

Diluted Share + Unit Computations

(in thousands, except per share data)


	Three Months Ended										Nine Months Ended
	9/30/26		6/30/26		3/31/26		12/31/25		9/30/25		9/30/26		9/30/25
EPS Denominator
Weighted average common shares - basic	112,886		112,871		112,806		112,733		112,485		112,855		112,442
Dilutive effect of share-based compensation awards	945		938		1,031		850		702		971		749


Dilutive exchangeable debt	2,088		1,087		472		—		—		1,183		—

Weighted average common shares - diluted	115,919		114,896		114,309		113,583		113,187		115,009		113,191
Diluted EPS	$	0.41	$	0.40	$	0.34	$	0.33	$	0.37	$	1.15	$	1.01

Weighted Average Shares for period ended
Common shares	112,886		112,871		112,806		112,733		112,485		112,855		112,442
Dilutive effect of share-based compensation awards	945		938		1,031		850		702		971		749
Common units	2,237		2,231		2,063		1,926		2,182		2,177		2,136



Dilutive exchangeable debt	2,088		1,087		472		—		—		1,183		—



Denominator for diluted FFO per share and as adjusted for comparability	118,156		117,127		116,372		115,509		115,369		117,186		115,327
Weighted average common units	(2,237)		(2,231)		(2,063)		(1,926)		(2,182)		(2,177)		(2,136)



Denominator for diluted EPS	115,919		114,896		114,309		113,583		113,187		115,009		113,191
Diluted FFO per share - Nareit (1)	$	0.71	$	0.71	$	0.69	$	0.70	$	0.69	$	2.11	$	2.02
Diluted FFO per share - as adjusted for comparability (1)	$	0.71	$	0.71	$	0.69	$	0.70	$	0.69	$	2.11	$	2.02

(1)Refer to the section entitled “Definitions” for a definition of this measure.


9			3Q 2026 Supplemental Information Package

COPT Defense Properties

Adjusted Funds from Operations

(in thousands)


	Three Months Ended										Nine Months Ended
	9/30/26		6/30/26		3/31/26		12/31/25		9/30/25		9/30/26		9/30/25
Diluted FFO available to common share and common unit holders, as adjusted for comparability (1)	$	84,002	$	83,015	$	80,168	$	80,424	$	80,121	$	247,185	$	233,241
Straight line rent adjustments and lease incentive amortization	(828)		5,377		(1,330)		3,634		5,053		3,219		1,518
Amortization of intangibles and other assets included in NOI	(5)		106		60		(384)		42		161		268
Sales-type lease adjustments	33		101		—		—		—		134		—
Share-based compensation, net of amounts capitalized	3,450		3,376		3,186		2,954		2,961		10,012		8,739
Amortization of deferred financing costs	778		794		832		817		657		2,404		1,981
Amortization of net debt discounts and commissions, net of amounts capitalized	1,087		1,076		1,217		1,282		1,070		3,380		3,181

Replacement capital expenditures (1)	(22,997)		(25,117)		(19,205)		(31,290)		(26,982)		(67,319)		(72,365)
Other	(136)		386		156		(228)		352		406		508
Diluted AFFO available to common share and common unit holders (“diluted AFFO”) (1)	$	65,384	$	69,114	$	65,084	$	57,209	$	63,274	$	199,582	$	177,071

Replacement capital expenditures (1)
Tenant improvements and incentives	$	19,173	$	19,905	$	15,899	$	25,671	$	24,769	$	54,977	$	53,820
Building improvements	3,882		2,892		1,142		8,888		3,662		7,916		11,175
Leasing costs	4,946		1,420		1,547		5,008		2,240		7,913		10,630
Net (exclusions from) additions to tenant improvements and incentives	(4,445)		1,167		924		(6,335)		(3,390)		(2,354)		(93)
Excluded building improvements	(559)		(267)		(307)		(1,942)		(299)		(1,133)		(2,203)
Excluded leasing costs	—		—		—		—		—		—		(964)

Replacement capital expenditures	$	22,997	$	25,117	$	19,205	$	31,290	$	26,982	$	67,319	$	72,365

(1)Refer to the section entitled “Definitions” for a definition of this measure.


10			3Q 2026 Supplemental Information Package

COPT Defense Properties

EBITDAre + Adjusted EBITDA

(in thousands)


	Three Months Ended										Nine Months Ended
	9/30/26		6/30/26		3/31/26		12/31/25		9/30/25		9/30/26		9/30/25
Net income	$	49,794	$	48,559	$	40,139	$	39,396	$	43,744	$	138,492	$	120,138
Interest expense	24,439		24,444		23,996		24,324		20,894		72,879		62,336
Income tax expense	96		34		124		115		612		254		832
Real estate-related depreciation and amortization	42,966		42,289		42,685		42,263		40,631		127,940		119,563
Other depreciation and amortization	482		466		416		435		428		1,364		1,438

Gain on sales of real estate	(7,673)		(6,442)		(582)		(32)		(3,018)		(14,697)		(3,318)

Adjustments from unconsolidated real estate JVs	1,797		1,658		650		1,818		1,758		4,105		4,791
EBITDAre (1)	111,901		111,008		107,428		108,319		105,049		330,337		305,780
Credit loss (recoveries) expense	(1,096)		(978)		(369)		(644)		(324)		(2,443)		1,378
Business development expenses	488		650		802		508		731		1,940		2,065

Demolition costs on nonrecurring improvements	97		—		—		—		—		97		—
Executive transition costs	—		—		—		—		—		—		78
Loss on early extinguishment of debt	—		—		—		66		—		—		—
Loss on early extinguishment of debt on unconsolidated real estate JVs	—		—		—		—		28		—		28

Net gain on other investments	—		—		(29)		(26)		(1,713)		(29)		(1,713)
Adjusted EBITDA (1)	111,390		110,680		107,832		108,223		103,771		$	329,902	$	307,616
Pro forma NOI adjustment for property changes within period	1,150		—		—		1,969		21
Change in collectability of deferred rental revenue	32		—		86		127		—

In-place adjusted EBITDA (1)	$	112,572	$	110,680	$	107,918	$	110,319	$	103,792

(1)Refer to the section entitled “Definitions” for a definition of this measure.


11			3Q 2026 Supplemental Information Package

COPT Defense Properties

Properties by Segment - 9/30/26

(square feet in thousands)


	# of Properties	Operational Square Feet	% Occupied	% Leased	% of Operational Square Feet	% of ARR (1)

Defense/IT Portfolio
Fort Meade/Baltimore Washington (“BW”) Corridor
National Business Park (Annapolis Junction, MD)	35	4,436	95.2%	95.5%	17.5%	25.0%
Howard County, MD	36	3,084	90.4%	94.0%	12.2%	11.4%
Other	25	1,883	90.9%	92.0%	7.5%	7.8%
Total Fort Meade/BW Corridor	96	9,403	92.8%	94.3%	37.2%	44.2%
Redstone Arsenal (Huntsville, AL)	25	2,525	96.9%	98.0%	10.0%	9.0%
Northern Virginia (“NoVA”) Defense/IT	17	2,644	93.5%	95.2%	10.4%	13.6%
Lackland Air Force Base (San Antonio, TX)	9	1,143	96.5%	96.5%	4.5%	9.6%
Navy Support	22	1,271	88.2%	89.0%	5.0%	5.0%
Data Center Shells
Consolidated properties	9	2,035	100.0%	100.0%	8.0%	7.7%
Unconsolidated JV properties (2)	24	4,295	100.0%	100.0%	17.0%	1.2%
Total Defense/IT Portfolio	202	23,316	95.2%	96.2%	92.1%	90.3%

Other	6	1,987	80.4%	81.5%	7.9%	9.7%
Total Portfolio	208	25,303	94.0%	95.0%	100.0%	100.0%
Consolidated Portfolio	184	21,008	92.8%	94.0%	83.0%	98.8%

(1)Refer to the section entitled “Definitions” for a definition of this measure.

(2)See page 34 for additional disclosure regarding our unconsolidated real estate JVs.


12			3Q 2026 Supplemental Information Package

COPT Defense Properties

Consolidated Real Estate Revenues + NOI by Segment

(in thousands)


	Three Months Ended										Nine Months Ended
	9/30/26		6/30/26		3/31/26		12/31/25		9/30/25		9/30/26		9/30/25
Consolidated real estate revenues
Defense/IT Portfolio
Fort Meade/BW Corridor	$	84,693	$	81,932	$	87,533	$	82,215	$	81,756	$	254,158	$	247,701
Redstone Arsenal	21,197		20,137		20,645		19,783		19,477		61,979		54,876
NoVA Defense/IT	25,066		24,824		24,816		23,307		22,343		74,706		67,523
Lackland Air Force Base	20,661		19,552		18,354		20,639		18,555		58,567		52,440
Navy Support	9,756		9,523		8,992		8,621		8,727		28,271		24,945
Data Center Shells-Consolidated	15,245		15,957		14,665		12,642		10,715		45,867		32,224
Total Defense/IT Portfolio	176,618		171,925		175,005		167,207		161,573		523,548		479,709
Other	18,717		18,701		19,591		19,278		18,737		57,009		55,655
Consolidated real estate revenues (1)	$	195,335	$	190,626	$	194,596	$	186,485	$	180,310	$	580,557	$	535,364

NOI from real estate operations (2)
Defense/IT Portfolio
Fort Meade/BW Corridor	$	53,768	$	53,394	$	51,053	$	52,028	$	53,279	$	158,215	$	160,397
Redstone Arsenal	13,809		13,422		13,396		12,857		12,227		40,627		35,172
NoVA Defense/IT	15,453		15,488		14,460		14,104		13,452		45,401		39,685
Lackland Air Force Base	9,611		9,703		9,356		9,059		8,310		28,670		23,955
Navy Support	5,168		5,419		4,633		4,807		4,711		15,220		12,907
Data Center Shells
Consolidated properties	12,080		11,918		12,116		10,486		9,014		36,114		26,887
COPT Defense’s share of unconsolidated real estate JVs	2,212		2,050		2,056		2,083		1,864		6,318		5,623
Total Defense/IT Portfolio	112,101		111,394		107,070		105,424		102,857		330,565		304,626
Other	8,229		8,696		8,147		8,528		8,961		25,072		27,050
NOI from real estate operations (1)	$	120,330	$	120,090	$	115,217	$	113,952	$	111,818	$	355,637	$	331,676

(1)Refer to the section entitled “Supplementary Reconciliations of Non-GAAP Measures” for reconciliation.

(2)Refer to the section entitled “Definitions” for a definition of this measure.


13			3Q 2026 Supplemental Information Package

COPT Defense Properties

Cash NOI by Segment

(in thousands)


	Three Months Ended										Nine Months Ended
	9/30/26		6/30/26		3/31/26		12/31/25		9/30/25		9/30/26		9/30/25
Cash NOI from real estate operations (1)
Defense/IT Portfolio
Fort Meade/BW Corridor	$	53,546	$	54,332	$	50,873	$	52,727	$	53,019	$	158,751	$	154,763
Redstone Arsenal	10,788		11,062		10,322		9,937		9,549		32,172		28,555
NoVA Defense/IT	15,993		16,033		14,964		14,607		13,669		46,990		38,649
Lackland Air Force Base	9,140		9,121		9,606		8,946		8,863		27,867		25,795
Navy Support	5,402		5,754		4,744		4,628		4,155		15,900		12,203
Data Center Shells
Consolidated properties	10,994		10,800		8,989		8,170		8,217		30,783		22,740
COPT Defense’s share of unconsolidated real estate JVs	1,791		1,763		1,701		1,682		1,655		5,255		4,934
Total Defense/IT Portfolio	107,654		108,865		101,199		100,697		99,127		317,718		287,639
Other	7,050		7,546		7,105		7,010		7,997		21,701		25,637
Cash NOI from real estate operations (2)	$	114,704	$	116,411	$	108,304	$	107,707	$	107,124	$	339,419	$	313,276

(1)Refer to the section entitled “Definitions” for a definition of this measure.

(2)Refer to the section entitled “Supplementary Reconciliations of Non-GAAP Measures” for reconciliation.


14			3Q 2026 Supplemental Information Package

COPT Defense Properties

NOI from Real Estate Operations + Occupancy by Property Grouping - 9/30/26

(dollars and square feet in thousands)


	As of Period End							NOI from Real Estate Operations (3)
	# of Properties	Operational Square Feet	% Occupied (1)	% Leased (1)	Annualized Rental Revenue (2)
Property Grouping							Nine Months Ended			% of Nine Months Ended
Defense/IT Portfolio
Same Property (2)
Consolidated properties	173	18,275	93.9%	95.1%	$	647,346		$	309,326		87.0	%
Unconsolidated JV properties	24	4,295	100.0%	100.0%	9,295			6,318			1.8	%
Total Same Property in Defense/IT Portfolio	197	22,570	95.0%	96.0%	656,641			315,644			88.8	%
Properties Placed in Service (4)	4	604	100.0%	100.0%	21,329			10,405			2.9	%

Acquired properties (5)	1	142	100.0%	100.0%	4,959			4,516			1.3	%
Total Defense/IT Portfolio	202	23,316	95.2%	96.2%	682,929			330,565			93.0	%



Other	6	1,987	80.4%	81.5%	73,718			25,072			7.0	%
Total Portfolio	208	25,303	94.0%	95.0%	$	756,647		$	355,637		100.0	%
Consolidated Portfolio	184	21,008	92.8%	94.0%	$	747,352		$	349,319		98.2	%

(1)Percentages calculated based on operational square feet.

(2)Refer to the section entitled “Definitions” for a definition of this measure.

(3)Refer to the section entitled “Supplementary Reconciliations of Non-GAAP Measures” for reconciliation.

(4)Newly developed or redeveloped properties placed in service that were not fully operational by 1/1/25.

(5)Includes an operating property acquired in 2025. Also includes NOI from real estate operations associated with a parcel of land subject to a ground lease that we acquired on 4/23/26 and recognized as an investment in a sales-type lease (see page 25).


15			3Q 2026 Supplemental Information Package

COPT Defense Properties

Same Property (1) Average Occupancy Rates by Segment

(square feet in thousands)


	# of Properties	Operational Square Feet	Three Months Ended										Nine Months Ended
			9/30/26		6/30/26		3/31/26		12/31/25		9/30/25		9/30/26		9/30/25

Defense/IT Portfolio
Fort Meade/BW Corridor	95	9,256	93.3	%	93.6	%	93.4	%	93.6	%	94.3	%	93.5	%	94.5	%
Redstone Arsenal	24	2,475	97.9	%	96.6	%	96.0	%	96.6	%	96.0	%	96.8	%	95.4	%
NoVA Defense/IT	16	2,502	93.0	%	93.5	%	93.3	%	92.8	%	93.1	%	93.3	%	92.6	%
Lackland Air Force Base	9	1,142	98.8	%	100.0	%	100.0	%	100.0	%	100.0	%	99.6	%	98.4	%
Navy Support	22	1,271	88.1	%	86.4	%	86.8	%	85.8	%	83.5	%	87.1	%	83.0	%
Data Center Shells
Consolidated properties	7	1,629	100.0	%	100.0	%	100.0	%	100.0	%	100.0	%	100.0	%	100.0	%
Unconsolidated JV properties	24	4,295	100.0	%	100.0	%	100.0	%	100.0	%	100.0	%	100.0	%	100.0	%
Total Defense/IT Portfolio	197	22,570	95.5	%	95.5	%	95.4	%	95.4	%	95.5	%	95.5	%	95.4	%


Other	6	1,987	80.2	%	82.9	%	79.2	%	76.8	%	76.2	%	80.8	%	75.0	%
Total Same Property	203	24,557	94.3	%	94.5	%	94.1	%	93.9	%	94.0	%	94.3	%	93.7	%

Same Property (1) Period End Occupancy Rates by Segment (square feet in thousands)
	# of Properties	Operational Square Feet
			9/30/26		6/30/26		3/31/26		12/31/25		9/30/25

Defense/IT Portfolio
Fort Meade/BW Corridor	95	9,256	92.7	%	93.5	%	93.5	%	93.6	%	94.1	%
Redstone Arsenal	24	2,475	96.9	%	97.7	%	96.0	%	96.0	%	95.7	%
NoVA Defense/IT	16	2,502	93.2	%	93.2	%	93.5	%	93.1	%	93.0	%
Lackland Air Force Base	9	1,142	96.5	%	100.0	%	100.0	%	100.0	%	100.0	%
Navy Support	22	1,271	88.2	%	86.2	%	88.2	%	86.9	%	83.9	%
Data Center Shells
Consolidated properties	7	1,629	100.0	%	100.0	%	100.0	%	100.0	%	100.0	%
Unconsolidated JV properties	24	4,295	100.0	%	100.0	%	100.0	%	100.0	%	100.0	%
Total Defense/IT Portfolio	197	22,570	95.0	%	95.6	%	95.5	%	95.4	%	95.4	%


Other	6	1,987	80.4	%	83.1	%	79.7	%	76.6	%	76.8	%
Total Same Property	203	24,557	93.9	%	94.5	%	94.2	%	93.9	%	93.9	%

(1)Refer to the section entitled “Definitions” for a definition of this measure.


16			3Q 2026 Supplemental Information Package

COPT Defense Properties

Same Property Real Estate Revenues + NOI by Segment

(in thousands)


	Three Months Ended										Nine Months Ended
	9/30/26		6/30/26		3/31/26		12/31/25		9/30/25		9/30/26		9/30/25
Same Property real estate revenues
Defense/IT Portfolio
Fort Meade/BW Corridor	$	84,113	$	81,931	$	87,534	$	82,215	$	81,756	$	253,578	$	247,701
Redstone Arsenal	20,670		19,591		20,133		19,302		19,128		60,394		54,406
NoVA Defense/IT	22,876		22,839		23,405		22,349		22,343		69,120		67,523
Lackland Air Force Base	20,661		19,552		18,354		20,639		18,554		58,567		52,440
Navy Support	9,756		9,523		8,992		8,621		8,727		28,271		24,945
Data Center Shells-Consolidated	11,749		12,509		11,393		11,101		10,715		35,651		32,224
Total Defense/IT Portfolio	169,825		165,945		169,811		164,227		161,223		505,581		479,239
Other	16,341		16,282		17,245		16,889		16,419		49,868		48,385
Same Property real estate revenues	$	186,166	$	182,227	$	187,056	$	181,116	$	177,642	$	555,449	$	527,624

Same Property NOI from real estate operations (“NOI”)
Defense/IT Portfolio
Fort Meade/BW Corridor	$	53,405	$	53,546	$	51,098	$	52,067	$	53,317	$	158,049	$	160,437
Redstone Arsenal	13,391		13,019		12,982		12,472		11,962		39,392		34,779
NoVA Defense/IT	13,589		13,866		13,429		13,318		13,453		40,884		39,685
Lackland Air Force Base	9,611		9,703		9,356		9,059		8,310		28,670		23,955
Navy Support	5,168		5,420		4,632		4,807		4,710		15,220		12,907
Data Center Shells
Consolidated properties	9,003		9,057		9,051		9,022		9,014		27,111		26,887
COPT Defense’s share of unconsolidated real estate JVs	2,212		2,050		2,056		2,083		1,864		6,318		5,623
Total Defense/IT Portfolio	106,379		106,661		102,604		102,828		102,630		315,644		304,273
Other	7,901		8,306		7,777		8,129		8,647		23,984		25,957
Same Property NOI (1)	$	114,280	$	114,967	$	110,381	$	110,957	$	111,277	$	339,628	$	330,230

(1)Refer to the section entitled “Supplementary Reconciliations of Non-GAAP Measures” for reconciliation.


17			3Q 2026 Supplemental Information Package

COPT Defense Properties

Same Property Cash NOI by Segment

(dollars in thousands)


	Three Months Ended										Nine Months Ended
	9/30/26		6/30/26		3/31/26		12/31/25		9/30/25		9/30/26		9/30/25
Same Property cash NOI from real estate operations (“cash NOI”)
Defense/IT Portfolio
Fort Meade/BW Corridor	$	53,763	$	54,484	$	50,917	$	52,766	$	53,057	$	159,164	$	154,803
Redstone Arsenal	10,580		10,873		10,105		9,824		9,549		31,558		28,530
NoVA Defense/IT	14,491		14,701		14,085		13,945		13,669		43,277		38,649
Lackland Air Force Base	9,140		9,121		9,606		8,947		8,863		27,867		25,795
Navy Support	5,402		5,754		4,744		4,627		4,155		15,900		12,203
Data Center Shells
Consolidated properties	8,380		8,400		8,345		8,247		8,218		25,125		22,741
COPT Defense’s share of unconsolidated real estate JVs	1,791		1,763		1,701		1,682		1,655		5,255		4,934
Total Defense/IT Portfolio	103,547		105,096		99,503		100,038		99,166		308,146		287,655
Other	6,723		7,156		6,750		6,628		7,698		20,629		24,520
Same Property cash NOI (1)	$	110,270	$	112,252	$	106,253	$	106,666	$	106,864	$	328,775	$	312,175
Percentage change in total Same Property cash NOI (1)(2)	3.2%										5.3%
Percentage change in Defense/IT Portfolio Same Property cash NOI (2)	4.4%										7.1%

(1)Refer to the section entitled “Supplementary Reconciliations of Non-GAAP Measures” for reconciliation.

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


18			3Q 2026 Supplemental Information Package

COPT Defense Properties

Leasing (1)(2)

Three Months Ended 9/30/26

(square feet in thousands)


	Defense/IT Portfolio
	Ft Meade/BW Corridor			Redstone Arsenal			NoVA Defense/IT			Lackland Air Force Base			Navy Support			Data Center Shells			Total Defense/IT Portfolio			Other			Total
Renewed Space
Leased Square Feet	128			17			242			—			39			58			484			61			545
Expiring Square Feet	260			68			253			40			41			58			719			61			780
Vacating Square Feet	131			51			11			40			2			—			235			—			235
Retention Rate (% based upon square feet)	49.5		%	24.4		%	95.7		%	—		%	95.8		%	100.0		%	67.3		%	100.0		%	69.9		%
Statistics for Completed Leasing
Per Annum Average Committed Cost per Square Foot	$	2.46		$	1.93		$	5.07		$	—		$	1.66		$	0.70		$	3.47		$	1.39		$	3.24
Weighted Average Lease Term in Years	2.9			2.7			5.1			—			2.9			5.0			4.3			5.0			4.3
Straight-line Rent Per Square Foot
Renewal Straight-line Rent	$	32.01		$	35.89		$	40.90		$	—		$	28.23		$	45.66		$	37.91		$	32.36		$	37.30
Expiring Straight-line Rent	$	27.40		$	31.64		$	36.76		$	—		$	26.05		$	16.67		$	30.83		$	32.39		$	31.00
Change in Straight-line Rent	16.8		%	13.4		%	11.3		%	—		%	8.4		%	173.9		%	23.0		%	(0.1		%)	20.3		%
Cash Rent Per Square Foot
Renewal Cash Rent	$	31.38		$	35.46		$	41.76		$	—		$	28.23		$	43.63		$	37.92		$	34.95		$	37.59
Expiring Cash Rent	$	30.63		$	33.02		$	41.86		$	—		$	29.02		$	18.20		$	34.70		$	34.20		$	34.65
Change in Cash Rent	2.4		%	7.4		%	(0.2		%)	—		%	(2.7		%)	139.7		%	9.3		%	2.2		%	8.5		%
Compound Annual Growth Rate	3.1		%	5.4		%	2.8		%	—		%	3.1		%	13.8		%	4.3		%	3.0		%	4.2		%
Average Escalations Per Year	2.5		%	1.9		%	2.3		%	—		%	2.6		%	3.0		%	2.4		%	0.6		%	2.2		%
New Leases
Investment Space
Leased Square Feet	—			75			—			—			—			—			75			—			75
Statistics for Completed Leasing
Per Annum Average Committed Cost per Square Foot	$	—		$	11.29		$	—		$	—		$	—		$	—		$	11.29		$	—		$	11.29
Weighted Average Lease Term in Years	—			11.6			—			—			—			—			11.6			—			11.6
Straight-line Rent Per Square Foot	$	—		$	39.85		$	—		$	—		$	—		$	—		$	39.85		$	—		$	39.85
Cash Rent Per Square Foot	$	—		$	37.50		$	—		$	—		$	—		$	—		$	37.50		$	—		$	37.50
Vacant Space
Leased Square Feet	133			27			24			—			11			—			195			27			222
Statistics for Completed Leasing
Per Annum Average Committed Cost per Square Foot	$	8.44		$	4.61		$	7.57		$	—		$	8.58		$	—		$	7.81		$	13.25		$	8.47
Weighted Average Lease Term in Years	7.6			4.9			5.4			—			4.7			—			6.8			10.0			7.2
Straight-line Rent Per Square Foot	$	25.94		$	30.97		$	31.73		$	—		$	24.75		$	—		$	27.29		$	65.28		$	31.90
Cash Rent Per Square Foot	$	26.23		$	29.30		$	32.22		$	—		$	23.69		$	—		$	27.25		$	61.42		$	31.41
Total Square Feet Leased	261			119			266			—			50			58			754			88			842
Average Escalations Per Year	2.4		%	2.3		%	2.3		%	—		%	2.6		%	3.0		%	2.4		%	1.6		%	2.3		%
Average Escalations Excl. Data Center Shells																									2.3		%

(1)Activity excludes owner occupied space, leases with less than a one-year term and expirations associated with space removed from service. Weighted average lease term is based on the term defined in the lease assuming no exercise of 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 10 in the period such costs are incurred.

(2)Refer to the section entitled “Definitions” for definitions of certain terms on this schedule.


19			3Q 2026 Supplemental Information Package

COPT Defense Properties

Leasing (1)(2)

Nine Months Ended 9/30/26

(square feet in thousands)


	Defense/IT Portfolio
	Ft Meade/BW Corridor			Redstone Arsenal			NoVA Defense/IT			Lackland Air Force Base			Navy Support			Data Center Shells			Total Defense/IT Portfolio			Other			Total
Renewed Space
Leased Square Feet	377			159			283			953			159			58			1,989			66			2,055
Expiring Square Feet	712			210			323			993			206			58			2,502			68			2,570
Vacating Square Feet	333			51			40			40			47			—			511			2			513
Retention Rate (% based upon square feet)	53.2		%	75.5		%	87.6		%	96.0		%	77.2		%	100.0		%	79.6		%	96.4		%	80.0		%
Statistics for Completed Leasing
Per Annum Average Committed Cost per Square Foot	$	1.52		$	0.89		$	5.33		$	2.14		$	0.66		$	0.70		$	2.22		$	1.43		$	2.19
Weighted Average Lease Term in Years	3.4			2.8			5.1			4.6			2.5			5.0			4.2			4.8			4.2
Straight-line Rent Per Square Foot
Renewal Straight-line Rent	$	34.35		$	27.47		$	40.66		$	67.05		$	23.35		$	45.66		$	49.81		$	32.08		$	49.25
Expiring Straight-line Rent	$	32.04		$	25.96		$	36.34		$	59.50		$	22.43		$	16.67		$	44.10		$	31.93		$	43.71
Change in Straight-line Rent	7.2		%	5.8		%	11.9		%	12.7		%	4.1		%	173.9		%	13.0		%	0.5		%	12.7		%
Cash Rent Per Square Foot
Renewal Cash Rent	$	34.08		$	27.99		$	41.36		$	65.65		$	23.78		$	43.63		$	49.20		$	34.42		$	48.73
Expiring Cash Rent	$	33.75		$	28.19		$	41.31		$	63.01		$	24.16		$	18.20		$	47.17		$	33.68		$	46.74
Change in Cash Rent	1.0		%	(0.7		%)	0.1		%	4.2		%	(1.6		%)	139.7		%	4.3		%	2.2		%	4.3		%
Compound Annual Growth Rate	3.9		%	4.0		%	3.0		%	6.3		%	1.7		%	13.8		%	5.1		%	3.2		%	5.0		%
Average Escalations Per Year	3.2		%	2.4		%	2.3		%	3.0		%	2.5		%	3.0		%	2.9		%	0.7		%	2.8		%
New Leases
Investment Space
Leased Square Feet	384			107			—			—			—			—			491			—			491
Statistics for Completed Leasing
Per Annum Average Committed Cost per Square Foot	$	4.16		$	10.49		$	—		$	—		$	—		$	—		$	5.53		$	—		$	5.53
Weighted Average Lease Term in Years	13.4			11.1			—			—			—			—			12.9			—			12.9
Straight-line Rent Per Square Foot	$	54.76		$	40.10		$	—		$	—		$	—		$	—		$	51.57		$	—		$	51.57
Cash Rent Per Square Foot	$	48.05		$	37.65		$	—		$	—		$	—		$	—		$	45.80		$	—		$	45.80
Vacant Space
Leased Square Feet	248			62			55			—			36			—			401			52			453
Statistics for Completed Leasing
Per Annum Average Committed Cost per Square Foot	$	7.02		$	8.20		$	11.20		$	—		$	5.92		$	—		$	7.68		$	10.77		$	8.04
Weighted Average Lease Term in Years	6.9			4.9			8.4			—			6.1			—			6.7			9.0			7.0
Straight-line Rent Per Square Foot	$	26.49		$	32.27		$	38.42		$	—		$	27.42		$	—		$	29.12		$	48.08		$	31.31
Cash Rent Per Square Foot	$	27.17		$	31.47		$	37.54		$	—		$	26.71		$	—		$	29.22		$	45.70		$	31.13
Total Square Feet Leased	1,009			328			338			953			195			58			2,881			118			2,999
Average Escalations Per Year	2.7		%	2.4		%	2.4		%	3.0		%	2.6		%	3.0		%	2.7		%	1.9		%	2.7		%
Average Escalations Excl. Data Center Shells																									2.7		%

(2)Refer to the section entitled “Definitions” for definitions of certain terms on this schedule.


20			3Q 2026 Supplemental Information Package

COPT Defense Properties

Lease Expiration Analysis as of 9/30/26 (1)

(dollars and square feet in thousands, except per square foot amounts)


Segment of Lease and Year of Expiration (2)	Square Footage of Leases Expiring	Annualized Rental Revenue of Expiring Leases (3)		% of Defense/IT Annualized Rental Revenue Expiring (3)		Annualized Rental Revenue of Expiring Leases per Occupied Sq. Foot (3)
Defense/IT Portfolio
Fort Meade/BW Corridor	546	$	27,435	4.0	%	$	50.21

NoVA Defense/IT	6	—		—	%	—

Navy Support	33	1,156		0.2	%	34.96



2026	585	28,591		4.2	%	48.86
Fort Meade/BW Corridor	1,622	66,316		9.7	%	40.86
Redstone Arsenal	49	1,496		0.2	%	30.66
NoVA Defense/IT	95	3,158		0.5	%	33.14

Navy Support	280	10,007		1.5	%	35.77



2027	2,046	80,977		11.9	%	39.56
Fort Meade/BW Corridor	2,057	80,431		11.8	%	39.03
Redstone Arsenal	137	4,035		0.6	%	29.54
NoVA Defense/IT	424	18,670		2.7	%	44.03

Navy Support	169	4,742		0.7	%	28.12

Data Center Shells-Unconsolidated JV properties	300	610		0.1	%	20.35

2028	3,087	108,488		15.9	%	38.47
Fort Meade/BW Corridor	1,260	44,756		6.6	%	35.48
Redstone Arsenal	434	9,738		1.4	%	22.35
NoVA Defense/IT	527	21,464		3.1	%	40.67

Navy Support	142	4,301		0.6	%	30.33

Data Center Shells-Unconsolidated JV properties	992	2,509		0.4	%	25.30

2029	3,355	82,768		12.1	%	33.57
Fort Meade/BW Corridor	1,088	37,448		5.5	%	34.33
Redstone Arsenal	242	6,878		1.0	%	28.44
NoVA Defense/IT	116	4,613		0.7	%	39.70
Lackland Air Force Base	703	48,487		7.1	%	69.00
Navy Support	47	1,486		0.2	%	31.01

Data Center Shells-Unconsolidated JV properties	432	935		0.1	%	21.63

2030	2,628	99,847		14.6	%	44.54
Thereafter
Consolidated properties	7,926	277,017		40.6	%	34.25
Unconsolidated JV properties	2,571	5,241		0.8	%	20.38
Total Defense/IT Portfolio	22,198	$	682,929	100.0	%	$	36.93


21			3Q 2026 Supplemental Information Package

COPT Defense Properties

Lease Expiration Analysis as of 9/30/26 (1) (continued)

(dollars and square feet in thousands, except per square foot amounts)


Segment of Lease and Year of Expiration (2)	Square Footage of Leases Expiring	Annualized Rental Revenue of Expiring Leases (3)		% of Total Annualized Rental Revenue Expiring (3)		Annualized Rental Revenue of Expiring Leases per Occupied Sq. Foot (3)
Total Defense/IT Portfolio	22,198	$	682,929	90.3	%	$	36.93
Other
2026	6	—		—	%	—
2027	93	4,236		0.6	%	44.47
2028	219	16,126		2.1	%	40.36
2029	160	6,934		0.9	%	43.27
2030	22	807		0.1	%	36.36
Thereafter	1,098	45,615		6.0	%	41.53
Total Other	1,598	73,718		9.7	%	41.49
Total Portfolio	23,796	$	756,647	100.0	%	$	37.29
Consolidated Portfolio	19,501	$	747,352
Unconsolidated JV properties	4,295	$	9,295

Note: As of 9/30/26, the weighted average lease term was 5.1 years for both the total and consolidated portfolio and 5.0 years for the Defense/IT Portfolio.

(1)This expiration analysis reflects consolidated and unconsolidated properties and includes the effect of early renewals completed on existing leases but excludes the effect of new tenant leases on square feet yet to commence as of 9/30/26. With regard to properties owned through unconsolidated real estate JVs, the amounts reported above reflect 100% of the properties’ square footage but only reflect the portion of Annualized Rental Revenue that was allocable to our ownership interest.

(2)The year of lease expiration is based on the lease term determined in accordance with GAAP.

(3)Refer to the section entitled “Definitions” for a definition of annualized rental revenue.


22			3Q 2026 Supplemental Information Package

COPT Defense Properties

2027 Defense/IT Portfolio Quarterly Lease Expiration Analysis as of 9/30/26 (1)

(dollars and square feet in thousands, except per square foot amounts)


Segment of Lease and Quarter of Expiration (2)	Square Footage of Leases Expiring	Annualized Rental Revenue of Expiring Leases (3)		% of Defense/IT Annualized Rental Revenue Expiring (3)		Annualized Rental Revenue of Expiring Leases per Occupied Sq. Foot (3)
Defense/IT Portfolio







































Fort Meade/BW Corridor	748	$	28,206	4.1	%	$	37.71

NoVA Defense/IT	63	2,048		0.3	%	32.31

Navy Support	41	1,299		0.2	%	31.60



Q1 2027	852	31,553		4.6	%	37.02
Fort Meade/BW Corridor	347	14,468		2.1	%	41.71
Redstone Arsenal	18	571		0.1	%	31.28
NoVA Defense/IT	12	371		0.1	%	30.13

Navy Support	89	3,229		0.5	%	36.36



Q2 2027	466	18,639		2.8	%	39.97
Fort Meade/BW Corridor	317	12,752		1.9	%	40.22
Redstone Arsenal	21	657		0.1	%	31.42
NoVA Defense/IT	4	101		—	%	26.37

Navy Support	25	919		0.1	%	36.29



Q3 2027	367	14,429		2.1	%	39.30
Fort Meade/BW Corridor	211	10,890		1.6	%	51.58
Redstone Arsenal	10	268		—	%	27.82
NoVA Defense/IT	16	638		0.1	%	40.43

Navy Support	124	4,560		0.7	%	36.63



Q4 2027	361	16,356		2.4	%	45.31

	2,046	$	80,977	11.9	%	$	39.56

(2)The period of lease expiration is based on the lease term determined in accordance with GAAP.

(3)Refer to the section entitled “Definitions” for a definition of annualized rental revenue.


23			3Q 2026 Supplemental Information Package

COPT Defense Properties

Top 20 Tenants as of 9/30/26 (1)

(dollars and square feet in thousands)


Tenant		Total Annualized Rental Revenue (2)		% of Total Annualized Rental Revenue (2)		Occupied Square Feet	Weighted Average Remaining Lease Term (3)
United States Government	(4)	$	261,655	34.6	%	5,623	3.5
Fortune 100 Company		87,024		11.5	%	6,763	7.3
General Dynamics Corporation		40,980		5.4	%	805	5.3
Peraton Corp.		20,256		2.7	%	515	4.8
CACI International Inc		16,290		2.2	%	388	3.2
The Boeing Company		16,074		2.1	%	452	2.2
Northrop Grumman Corporation		15,956		2.1	%	519	5.0
Fortune 100 Company		12,518		1.7	%	183	8.0
Booz Allen Hamilton, Inc.		11,496		1.5	%	266	1.3
Morrison & Foerster, LLP		10,122		1.3	%	102	10.5
KBR, Inc.		8,627		1.1	%	284	7.4
CareFirst, Inc.		8,046		1.1	%	216	10.1
Yulista Holding, LLC		7,740		1.0	%	368	3.2
Amentum Holdings, Inc.		7,145		0.9	%	198	3.2
Mantech International Corp.		7,132		0.9	%	208	2.1
AT&T Corporation		7,131		0.9	%	313	3.4
University System of Maryland		7,001		0.9	%	184	3.5
Wells Fargo & Company		6,207		0.8	%	138	2.3
Lockheed Martin Corporation		6,151		0.8	%	194	3.8
The MITRE Corporation		5,053		0.7	%	139	3.5
Subtotal Top 20 Tenants		562,604		74.2	%	17,858	5.2
All remaining tenants		194,043		25.8	%	5,938	4.8
Total / Weighted Average		$	756,647	100.0	%	23,796	5.1

(1)For properties owned through unconsolidated real estate JVs, includes our share of those properties’ ARR of $9.3 million (see page 34 for additional information).

(2)Refer to the section entitled “Definitions” for a definition of annualized rental revenue.

(3)Weighted average remaining lease term is based on the lease term determined in accordance with GAAP. The weighting of the lease term was computed based on occupied square feet (excluding leases not associated with square feet, such as ground leases).

(4)Substantially all of our government leases are subject to early termination provisions which are customary in government leases. As of 9/30/26, $6.7 million of our ARR was through the General Services Administration (GSA), representing 2.6% of our ARR from the United States Government and 0.9% of our total ARR.


24			3Q 2026 Supplemental Information Package

COPT Defense Properties

Summary of Acquisition

(dollars and square feet in thousands)

Property

Property Segment/Sub-Segment

Location

Transaction
Date

Transaction Value (1)

Quarter Ended 6/30/26

Mission Ridge (1)

NoVA Defense/IT

Chantilly, VA

4/23/26

43,000

(1)This 17 acre land parcel is subject to a ground lease underlying two fully-leased operating properties located at 15020 and 15030 Conference Center Drive in Chantilly, Virginia and recognized as an investment in a sales-type lease.


25			3Q 2026 Supplemental Information Package

COPT Defense Properties

Summary of Development Projects as of 9/30/26 (1)

(dollars and square feet in thousands)


		Total Rentable Square Feet	% Leased as of 9/30/26	as of 9/30/26 (2)				Actual or Anticipated Shell Completion Date	Anticipated Operational Date (3)
				Anticipated Total Cost		Cost to Date

Property and Segment/Sub-Segment	Location
Defense/IT Portfolio
Fort Meade/BW Corridor
4400 River Road	College Park, MD	110	100%	$	62,528	$	16,875		1Q 27	1Q 27
620 Guardian Way	Annapolis Junction, MD	236	100%	145,970		28,705			4Q 27	4Q 27
Fort Meade/BW Corridor Subtotal / Average		346	100%	208,498		45,580
Redstone Arsenal
8500 Advanced Gateway	Huntsville, AL	155	89%	54,326		36,785			2Q 26	1Q 27
7700 Advanced Gateway	Huntsville, AL	101	100%	32,895		26,379			1Q 27	1Q 27
2200 Rideout Road	Huntsville, AL	59	0%	23,248		1,766			4Q 27	2Q 28
410 Goss Road	Huntsville, AL	149	0%	57,212		29,150			3Q 27	3Q 28
6300 Redstone Gateway	Huntsville, AL	175	0%	64,631		4,796			1Q 28	4Q 28
Redstone Arsenal Subtotal / Average		639	37%	232,312		98,876
Lackland Air Force Base
Project EL 2	San Antonio, TX	132	100%	87,600		41,029			3Q 27	3Q 27




Total Defense/IT Portfolio Under Development		1,117	64%	$	528,410	$	185,485

(1)Includes properties under, or contractually committed for, development as of 9/30/26.

(2)Cost includes land, development, 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.


26			3Q 2026 Supplemental Information Package

COPT Defense Properties

Development Placed in Service as of 9/30/26

(square feet in thousands)

Square Feet Placed in Service

Total Space Placed in Service % Leased as of 9/30/26

Total Property

Property Segment/Sub-Segment

% Leased as of 9/30/26

Rentable Square Feet

2026

Property and Location

1st Quarter

2nd Quarter

3rd Quarter

Total 2026

400 National Business Parkway

Annapolis Junction, MD

Fort Meade/BW Corridor

100%

148

—

148

—

148

100%


27			3Q 2026 Supplemental Information Package

COPT Defense Properties

Summary of Land Owned/Controlled as of 9/30/26 (1)

(dollars and square feet in thousands)


Location	Acres	Estimated Developable Square Feet	Carrying Amount
Defense/IT Portfolio land owned/controlled for future development
Fort Meade/BW Corridor
National Business Park (Annapolis Junction, MD)	136	1,067
Howard County, MD	19	290
Other	92	778
Total Fort Meade/BW Corridor	247	2,135
Redstone Arsenal (2)	257	3,214
NoVA Defense/IT	29	1,739

Navy Support	36	57
Data Center Shells	365	3,300
Total Defense/IT Portfolio land owned/controlled for future development	934	10,445	$	171,186


Other land owned/controlled	10	900	6,026




Land held, net	944	11,345	$	177,212

(1)This non-operational land inventory schedule includes properties under ground lease to us and excludes all properties listed as development as detailed on page 26. The costs associated with the land included on this summary are reported on our consolidated balance sheet in the line entitled “land held.”

(2)This land is controlled under a long-term master lease agreement to LW Redstone Company, LLC, a consolidated JV (see page 33). As this land is developed in the future, the JV will execute site-specific leases under the master lease agreement. Lease payments will commence under the site-specific leases as cash rents under tenant leases commence at the respective properties.


28			3Q 2026 Supplemental Information Package

COPT Defense Properties

Capitalization Overview

(dollars, shares and units in thousands)


	Wtd. Avg. Maturity (Years) (1)	Stated Rate		Effective Rate (2)		Amount Outstanding at 9/30/26

Debt
Unsecured debt	4.0	3.53	%	3.73	%	$	2,429,000
Secured debt	4.0	5.19	%	5.19	%	170,000
Total Consolidated Debt	4.0	3.64	%	3.83	%	$	2,599,000

Fixed-rate debt	4.1	3.37	%	3.60	%	$	2,145,000
Variable-rate debt	3.7	4.92	%	4.92	%	454,000
Total Consolidated Debt						$	2,599,000

Common Equity
Common Shares						113,420
Common Units (3)						2,450
Total Common Shares and Units						115,870

Closing Common Share Price on 9/30/26						$	33.40
Equity Market Capitalization (4)						$	3,870,058

Total Market Capitalization (4)						$	6,469,058

(1)Calculated assuming exercise of extension options on our Revolving Credit Facility, term loan, and Revolving Development Facility.

(2)Excludes the effect of deferred financing cost amortization.

(3)Includes certain unvested share-based compensation awards in the form of profit interest units.

(4)Refer to the section entitled “Definitions” for a definition of this measure.

Investment Grade Ratings & Outlook

Fitch

BBB-

Stable

Moody’s

Baa2

Stable

S&P

BBB-

Stable


29			3Q 2026 Supplemental Information Package

COPT Defense Properties

Summary of Outstanding Debt as of 9/30/26

(dollars in thousands)


	Stated Rate	Amount Outstanding		Maturity Date		Debt Summary	Stated Rate	Amount Outstanding
Unsecured Debt						Total Unsecured Debt	3.53%	$	2,429,000
Revolving Credit Facility	SOFR+0.85%	$	234,000	Oct-29	(1)(2)	Total Secured Debt	5.19%	170,000
Senior Unsecured Notes						Consolidated Debt	3.64%	$	2,599,000
5.25% due 2028	5.25%	345,000		Sep-28	(3)
2.00% due 2029	2.00%	400,000		Jan-29		Debt per balance sheet		$	2,579,733
4.50% due 2030	4.50%	400,000		Oct-30		Net discounts and commissions and deferred financing costs		19,267
2.75% due 2031	2.75%	600,000		Apr-31		Consolidated Debt		2,599,000
2.90% due 2033	2.90%	400,000		Dec-33		COPT Defense’s share of unconsolidated JV gross secured debt (6)		75,250
Subtotal - Senior Unsecured Notes	3.37%	2,145,000				Gross debt		$	2,674,250

Unsecured Bank Term Loan	SOFR+1.05%	50,000		Jan-27	(2)(4)
Total Unsecured Debt	3.53%	$	2,429,000

Secured Debt
Revolving Development Facility	SOFR+1.35%	$	170,000	Oct-29	(2)(5)
Total Secured Debt	5.19%	$	170,000

(1)The Revolving Credit Facility matures in October 2029 and may be extended by two six-month periods at our option.

(2)Pre-payable anytime without penalty.

(3)These notes are due in 2028 unless earlier exchanged, redeemed, or repurchased only in the event of certain circumstances and during certain periods defined under the terms of the notes. Upon exchange of the notes, the principal amount of notes exchanged is payable in cash, with the remainder of the exchange obligation, if any, payable in cash, common shares, or a combination thereof at our election.

(4)The term loan matures in January 2027 and may be extended by a 12-month period at our option.

(5)The Revolving Development Facility matures in October 2029 and may be extended by a 12-month period at our option.

(6)See page 34 for additional disclosure regarding our unconsolidated real estate JVs.


30			3Q 2026 Supplemental Information Package

COPT Defense Properties

Summary of Outstanding Debt as of 9/30/26 (continued)

(1)Term loan balance of $50.0 million is included in 2028 assuming our exercise of a 12-month extension option. Also included is $345.0 million principal amount of exchangeable senior notes due in 2028 unless earlier exchanged, redeemed, or repurchased only in the event of certain circumstances and during certain periods defined under the terms of the notes.

(2)Revolving Credit Facility balance of $234.0 million is included in 2030 assuming our exercise of two six-month extension options. Also included is our Revolving Development Facility balance of $170.0 million assuming our exercise of a 12-month extension option.

(3)The interest on this debt is capitalized to our active development projects.


31			3Q 2026 Supplemental Information Package

COPT Defense Properties

Debt Analysis

(dollars and square feet in thousands)


		As of and for Three Months Ended 9/30/26					As of and for Three Months Ended 9/30/26
Senior Note Covenants (1)	Required				Line of Credit & Term Loan Covenants (1)	Required
Total Debt / Total Assets	< 60%	40.6%			Total Debt / Total Assets	< 60%	36.0%
Secured Debt / Total Assets	< 40%	2.7%			Secured Debt / Total Assets	< 40%	3.3%
Debt Service Coverage	> 1.5x	4.6x			Adjusted EBITDA / Fixed Charges	> 1.5x	4.6x
Unencumbered Assets / Unsecured Debt	> 150%	247.4%			Unsecured Debt / Unencumbered Assets	< 60%	36.4%
					Unencumbered Adjusted NOI / Unsecured Interest Expense	> 1.75x	4.4x

Debt Ratios	Page				Unencumbered Portfolio Analysis
GAAP					NOI from unencumbered real estate operations		$	113,298
Debt per balance sheet	6	$	2,579,733		% of total NOI from real estate operations		94		%
Total assets	6	$	4,573,242		Adjusted EBITDA from unencumbered real estate operations		$	104,359
Debt to assets		56.4		%	% of total adjusted EBITDA from real estate operations		94		%
Net income	7	$	49,794		Unencumbered adjusted book		$	6,202,467
Debt to net income ratio (2)		13.0		x	% of total adjusted book		94		%
Interest expense	7	$	24,439
Net income to interest expense ratio (2)		2.0		x

Non-GAAP
Net debt	37	$	2,648,656
Adjusted book	37	$	6,629,937
Net debt to adjusted book		39.9		%

Net debt adjusted for fully-leased investment properties	37	$	2,535,668

In-place adjusted EBITDA	11	$	112,572

Net debt to in-place adjusted EBITDA ratio		5.9		x

Net debt adjusted for fully-leased investment properties to in-place adjusted EBITDA ratio		5.6		x

Denominator for debt service coverage	36	$	23,565
Denominator for fixed charge coverage	36	$	25,596
Adjusted EBITDA	11	$	111,390
Adjusted EBITDA debt service coverage ratio		4.7		x
Adjusted EBITDA fixed charge coverage ratio		4.4		x

(1)The covenants are calculated as defined in the applicable agreements, and the calculations differ between those agreements.

(2)Refer to the section entitled “Definitions” for a definition of this measure.


32			3Q 2026 Supplemental Information Package

COPT Defense Properties

Consolidated Real Estate Joint Ventures as of 9/30/26

(dollars and square feet in thousands)


				NOI from Real Estate Operations (1)						Venture Level Debt Outstanding (3)		COPT Defense Nominal Ownership %
Operating Properties	Operational Square Feet	% Occupied	% Leased	Three Months Ended		Nine Months Ended		Total Assets (2)
Suburban MD
M Square Associates, LLC (4 properties)	414	98.4%	98.4%	$	1,986	$	5,803	$	89,288	$	—	50%
Huntsville, AL
LW Redstone Company, LLC (24 properties)	2,388	97.4%	97.8%	13,146		38,774		630,819		—		85%	(4)
Washington, DC
Stevens Place (1 property)	188	93.7%	93.7%	2,384		7,173		143,716		—		95%
Total / Average	2,990	97.3%	97.7%	$	17,516	$	51,750	$	863,823	$	—


Non-Operating Properties	Estimated Developable Square Feet	Total Assets (2)		Venture Level Debt Outstanding		COPT Defense Nominal Ownership %
Suburban MD
M Square Research Park	348	$	23,928	$	—	50%	(3)
Huntsville, AL
Redstone Gateway (5)	3,853	195,828		—		85%	(3)
Total	4,201	$	219,756	$	—

(1)Represents NOI from real estate operations of the JV operating properties before allocation to JV partners.

(2)Total assets includes the assets of the consolidated JV plus any outside investment basis.

(3)Excludes debt from us to the JV, which is eliminated in the presentation of our consolidated financial statements.

(4)Our partner receives an annual priority return of 13.5% on its $9.0 million in contributed equity, plus certain fees for leasing and development, and we receive the remainder.

(5)Total assets include $67.8 million in notes receivable due from the City of Huntsville (including accrued interest and excluding allowance for credit losses) in connection with infrastructure costs funded by the JV.


33			3Q 2026 Supplemental Information Package

COPT Defense Properties

Unconsolidated Real Estate Joint Ventures as of 9/30/26 (1)

(dollars and square feet in thousands)


Joint venture information
COPT Defense ownership %	10		%
COPT Defense’s investment	$	11,168		(2)
# of Properties	24
Square Feet	4,295
% Occupied	100		%
COPT Defense’s share of ARR	$	9,295


Balance sheet information	Total				COPT Defense’s Share (3)
Operating properties, net	$	896,319			$	89,632
Total assets	$	1,014,592			$	101,459
Secured debt (4)	$	749,293			$	74,929
Total liabilities	$	828,491			$	82,849

	Three Months Ended						Nine Months Ended
Operating information	Total				COPT Defense’s Share (3)		Total		COPT Defense’s Share (3)
Revenue	$	27,609			$	2,762	$	79,447	$	7,945
Operating expenses	(5,491)				(550)		(16,270)		(1,627)
NOI from real estate operations and EBITDAre (5)	22,118				2,212		63,177		6,318

Interest expense	(10,787)				(1,079)		(31,953)		(3,195)
Depreciation and amortization	(7,641)				(718)		(23,251)		(2,186)
Gain on sale of real estate (6)	—				—		12,769		1,276

Net income	$	3,690			$	415	$	20,742	$	2,213

NOI from real estate operations (per above) (5)	$	22,118			$	2,212	$	63,177	$	6,318

Straight line rent adjustments	(2,336)				(234)		(5,101)		(510)
Amortization of acquired above- and below-market rents	(1,873)				(187)		(5,527)		(553)
Cash NOI from real estate operations (5)	$	17,909			$	1,791	$	52,549	$	5,255

(1)Includes equity method investments in five JVs that own and operate data center shell properties.

(2)Includes $35.8 million reported in “Investment in unconsolidated real estate joint ventures” and $24.6 million for investments with deficit balances reported in “other liabilities” on our consolidated balance sheet. Investments with deficit balances are attributable to JV distributions of debt refinancing proceeds in excess of our equity in two JVs.

(3)Represents the portion allocable to our ownership interest.

(4)Maturities on JV debt range from 2029 to 2030 (assuming exercise of three one-year extension options).

(5)Refer to the section entitled “Definitions” for a definition of this measure.

(6)Represents gain from the sale of a right-of-way easement by one of our JVs.


34			3Q 2026 Supplemental Information Package

COPT Defense Properties

Supplementary Reconciliations of Non-GAAP Measures (1)

(in thousands)


	Three Months Ended										Nine Months Ended
	9/30/26		6/30/26		3/31/26		12/31/25		9/30/25		9/30/26		9/30/25
Net income	$	49,794	$	48,559	$	40,139	$	39,396	$	43,744	$	138,492	$	120,138
Construction contract and other service revenues	(13,424)		(6,766)		(6,041)		(10,872)		(8,485)		(26,231)		(31,202)
Depreciation and other amortization associated with real estate operations	42,966		42,289		42,685		42,263		40,631		127,940		119,563
Construction contract and other service expenses	12,763		6,023		5,552		10,432		7,952		24,338		29,530

General and administrative expenses	9,047		9,237		8,456		7,943		8,483		26,740		24,833
Leasing expenses	2,780		3,089		2,994		2,896		2,449		8,863		8,061
Business development expenses and land carry costs	729		938		1,199		904		1,098		2,866		3,203
Interest expense	24,439		24,444		23,996		24,324		20,894		72,879		62,336
Interest and other income, net	(2,984)		(2,973)		(3,955)		(5,301)		(2,591)		(9,912)		(5,382)
Gain on sales of real estate	(7,673)		(6,442)		(582)		(32)		(3,018)		(14,697)		(3,318)
Loss on early extinguishment of debt	—		—		—		66		—		—		—
Equity in income of unconsolidated entities	(415)		(392)		(1,406)		(265)		(1,815)		(2,213)		(2,541)
Unconsolidated real estate JVs NOI allocable to COPT Defense included in equity in income of unconsolidated entities (2)	2,212		2,050		2,056		2,083		1,864		6,318		5,623
Income tax expense	96		34		124		115		612		254		832



NOI from real estate operations	120,330		120,090		115,217		113,952		111,818		355,637		331,676
Straight line rent adjustments and lease incentive amortization	(277)		5,737		(1,028)		3,968		5,551		4,432		2,297
Amortization of acquired above- and below-market rents	(5)		106		60		(384)		42		161		171
Amortization of intangibles and other assets to property operating expenses	—		—		—		—		—		—		98
Lease termination fees, net	(1,901)		(808)		(1,212)		(859)		(1,190)		(3,921)		(2,753)
Tenant funded landlord assets and lease incentives	(3,055)		(8,528)		(4,378)		(8,569)		(8,888)		(15,961)		(17,524)
Cash NOI adjustments in unconsolidated real estate JVs	(421)		(287)		(355)		(401)		(209)		(1,063)		(689)
Sales-type lease adjustments	33		101		—		—		—		134		—
Cash NOI from real estate operations	$	114,704	$	116,411	$	108,304	$	107,707	$	107,124	$	339,419	$	313,276

NOI from real estate operations (from above)	$	120,330	$	120,090	$	115,217	$	113,952	$	111,818	$	355,637	$	331,676
Non-Same Property NOI from real estate operations	(6,050)		(5,123)		(4,836)		(2,995)		(541)		(16,009)		(1,446)
Same Property NOI from real estate operations	114,280		114,967		110,381		110,957		111,277		339,628		330,230
Straight line rent adjustments and lease incentive amortization	1,108		6,544		677		5,909		2,185		8,329		(908)
Amortization of acquired above- and below-market rents	15		125		80		(371)		41		220		170

Lease termination fees, net	(1,901)		(808)		(1,212)		(859)		(1,191)		(3,921)		(2,753)
Tenant funded landlord assets and lease incentives	(3,054)		(8,528)		(3,318)		(8,569)		(5,239)		(14,900)		(13,875)
Cash NOI adjustments in unconsolidated real estate JVs	(421)		(287)		(355)		(401)		(209)		(1,063)		(689)
Sales-type lease adjustments	243		239		—		—		—		482		—
Same Property Cash NOI from real estate operations	$	110,270	$	112,252	$	106,253	$	106,666	$	106,864	$	328,775	$	312,175

(1)Refer to the section entitled “Definitions” for definitions of non-GAAP measures.

(2)See page 34 for additional disclosure regarding our unconsolidated real estate JVs.


35			3Q 2026 Supplemental Information Package

COPT Defense Properties

Supplementary Reconciliations of Non-GAAP Measures (1) (continued)

(in thousands)


	Three Months Ended										Nine Months Ended
	9/30/26		6/30/26		3/31/26		12/31/25		9/30/25		9/30/26		9/30/25
Real estate revenues
Lease revenue
Fixed-lease revenue from operating leases	$	144,905	$	143,807	$	142,389	$	139,247	$	135,883	$	431,101	$	403,750
Variable-lease revenue (2)	47,689		44,322		50,504		45,684		42,315		142,515		125,196
Sales-type lease interest income	888		677		78		71		74		1,643		232

Total lease revenue	193,482		188,806		192,971		185,002		178,272		575,259		529,178
Other property revenue	1,853		1,820		1,625		1,483		2,038		5,298		6,186
Real estate revenues	$	195,335	$	190,626	$	194,596	$	186,485	$	180,310	$	580,557	$	535,364

Provision for credit losses (recoveries) on billed lease revenue	$	2	$	(4)	$	84	$	26	$	108	$	82	$	731









Total revenues	$	208,759	$	197,392	$	200,637	$	197,357	$	188,795	$	606,788	$	566,566
Construction contract and other service revenues	(13,424)		(6,766)		(6,041)		(10,872)		(8,485)		(26,231)		(31,202)

Real estate revenues	$	195,335	$	190,626	$	194,596	$	186,485	$	180,310	$	580,557	$	535,364












Total interest expense	$	24,439	$	24,444	$	23,996	$	24,324	$	20,894	$	72,879	$	62,336
Less: Amortization of deferred financing costs	(778)		(794)		(832)		(817)		(657)		(2,404)		(1,981)
Less: Amortization of net debt discounts and commissions, net of amounts capitalized	(1,087)		(1,076)		(1,217)		(1,282)		(1,070)		(3,380)		(3,181)


COPT Defense’s share of interest expense of unconsolidated real estate JVs, excluding amortization of deferred financing costs and net debt premium and gain or loss on interest rate derivatives	971		957		947		968		898		2,875		2,409
Denominator for interest coverage	23,545		23,531		22,894		23,193		20,065		69,970		59,583
Scheduled principal amortization	20		260		397		416		458		677		1,376
Denominator for debt service coverage	23,565		23,791		23,291		23,609		20,523		70,647		60,959
Capitalized interest, excluding amortization of deferred financing costs	2,031		1,574		1,679		1,714		1,292		5,284		3,345


Denominator for fixed charge coverage	$	25,596	$	25,365	$	24,970	$	25,323	$	21,815	$	75,931	$	64,304


Dividends on unrestricted common and deferred shares	$	36,143	$	36,140	$	36,134	$	34,414	$	34,332	$	108,417	$	102,974
Distributions on unrestricted common units	715		717		711		573		658		2,143		1,985
Dividends and distributions on restricted shares and units	239		247		267		205		209		753		663

Total dividends and distributions for GAAP payout ratio	37,097		37,104		37,112		35,192		35,199		111,313		105,622
Dividends and distributions on antidilutive shares and units	(230)		(236)		(257)		(198)		(202)		(723)		(592)



Dividends and distributions for non-GAAP payout ratios	$	36,867	$	36,868	$	36,855	$	34,994	$	34,997	$	110,590	$	105,030

(1)Refer to the section entitled “Definitions” for definitions of non-GAAP measures.

(2)Represents primarily lease revenue associated with property operating expense reimbursements from tenants.


36			3Q 2026 Supplemental Information Package

COPT Defense Properties

Supplementary Reconciliations of Non-GAAP Measures (1) (continued)

(in thousands)


	9/30/26		6/30/26		3/31/26		12/31/25		9/30/25
Total assets	$	4,573,242	$	4,515,281	$	4,458,909	$	4,701,790	$	4,351,432
Accumulated depreciation	1,798,284		1,759,411		1,721,016		1,682,367		1,644,472

Accumulated amortization of intangibles on property acquisitions and deferred leasing costs	226,159		224,598		227,989		228,656		226,312

COPT Defense’s share of liabilities of unconsolidated real estate JVs	82,849		82,420		82,353		82,039		82,430
COPT Defense’s share of accumulated depreciation and amortization of unconsolidated real estate JVs	17,265		16,497		16,583		16,000		15,197
Less: Property - operating lease liabilities	(41,178)		(42,485)		(43,768)		(45,012)		(46,203)
Less: Property - finance lease liabilities	(1,090)		(1,070)		(752)		(363)		(370)
Less: Cash and cash equivalents	(24,262)		(24,157)		(28,580)		(274,986)		(23,687)
Less: COPT Defense’s share of cash of unconsolidated real estate JVs	(1,332)		(1,332)		(1,230)		(1,898)		(2,080)
Adjusted book	$	6,629,937	$	6,529,163	$	6,432,520	$	6,388,593	$	6,247,503

Gross debt (page 30)	$	2,674,250	$	2,688,290	$	2,644,154	$	2,866,550	$	2,537,891
Less: Cash and cash equivalents	(24,262)		(24,157)		(28,580)		(274,986)		(23,687)
Less: COPT Defense’s share of cash of unconsolidated real estate JVs	(1,332)		(1,332)		(1,230)		(1,898)		(2,080)
Net debt	2,648,656		2,662,801		2,614,344		2,589,666		2,512,124


Costs incurred on fully-leased development properties	(112,988)		(62,558)		(82,576)		(8,226)		(83,794)

Net debt adjusted for fully-leased investment properties	$	2,535,668	$	2,600,243	$	2,531,768	$	2,581,440	$	2,428,330

(1)Refer to the section entitled “Definitions” for definitions of non-GAAP measures.


37			3Q 2026 Supplemental Information Package

COPT Defense Properties

Definitions

Non-GAAP Measures

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.


Adjusted book

Total assets presented on our consolidated balance sheet, net of lease liabilities associated with property right-of-use assets, and 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 and unconsolidated real estate joint ventures (“JVs”) cash and cash equivalents, liabilities, and accumulated depreciation and amortization (of intangibles on property acquisitions and deferred leasing costs) allocable to our ownership interest in the JVs. We use adjusted book for purposes of calculating our net debt to adjusted book, which we believe is a useful supplemental measure for investors to use in further understanding the relationship of our outstanding debt to our assets available to service such debt. We believe that total assets is the most directly comparable GAAP measure to this non-GAAP measure.


Adjusted earnings before interest, income taxes, depreciation and amortization (“Adjusted EBITDA”)

Net income or loss adjusted for the effects of interest expense, depreciation and amortization, gain on sales and impairment losses of real estate and investments in unconsolidated real estate JVs, gain or loss on early extinguishment of debt, loss on interest rate derivatives, net gain or loss on other investments, credit loss expense or recoveries, operating property acquisition costs, income taxes, business development expenses, demolition costs on redevelopment and nonrecurring improvements, executive transition costs, and certain other expenses that we believe are not relevant to an investor’s evaluation of our ability to repay debt. Adjusted EBITDA also includes adjustments to net income or loss for the effects of the items noted above pertaining to unconsolidated real estate JVs that were allocable to our ownership interest in the JVs. 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 represent costs that are not closely correlated to (or associated with) our operating performance and are not relevant to an investor’s evaluation of our ability to repay debt. We believe that adjusted EBITDA is a useful supplemental measure for assessing our un-levered performance and

ability to repay outstanding debt from operations. We believe that net income or loss is the most directly comparable GAAP measure to this non-GAAP measure.


Adjusted EBITDA debt service coverage ratio

Adjusted EBITDA divided by the sum of interest expense (excluding amortization of deferred financing costs and amortization of debt discounts, commissions, and premiums, net of amounts capitalized, and gains or losses on interest rate derivatives) and scheduled principal amortization on mortgage loans.


Amortization of acquisition intangibles included in NOI

Amortization of intangible asset and liability categories that is included in net operating income, including amortization of above- or below-market leases and above- or below-market cost arrangements.


Basic FFO available to common share and common unit holders (“Basic FFO”)

FFO adjusted to subtract (1) preferred share dividends, (2) income or loss attributable to noncontrolling interests through ownership of preferred units in COPT Defense 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 share-based compensation awards, 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 or loss is the most directly comparable GAAP measure to this non-GAAP measure.


Cash net operating income (“Cash NOI”)

NOI from real estate operations adjusted: to eliminate the effects of straight-line rental adjustments, amortization of tenant incentives, amortization of intangibles and other assets included in FFO and NOI, 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 and lease incentives funded by tenants; and prospectively effective 4/1/26, for our investments in sales-type leases, to reflect scheduled lease payments, resulting in adjustments to include lease receivable principal amortization and exclude accretion of unguaranteed residual assets (this change was made prospectively effective 4/1/26 since these adjustments were not material until our acquisition of an investment in a sales-type lease on 4/23/26). Cash NOI also includes adjustments to NOI from real estate operations for the effects of the items noted above pertaining to unconsolidated real estate JVs that were allocable to our ownership interest in the JVs. 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


38			3Q 2026 Supplemental Information Package

COPT Defense Properties

Definitions

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 reportable segments, Same Property groupings, and individual properties. We believe that net income or loss is the most directly comparable GAAP measure to this non-GAAP measure.


COPT Defense’s share of NOI from unconsolidated real estate JVs

Net of revenues and property operating expenses of real estate operations owned through unconsolidated JVs that are allocable to COPT Defense’s ownership interest. This measure is included in the computation of NOI, our segment performance measure, as discussed below.


Diluted adjusted funds from operations available to common share and common unit holders (“Diluted AFFO”)

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, commissions, and premiums, and (e) amortization of settlements of debt hedges; (2) replacement capital expenditures (defined below); and (3) prospectively effective 4/1/26, for our investments in sales-type leases, to reflect scheduled lease payments, resulting in adjustments to include lease receivable principal amortization and exclude accretion of unguaranteed residual assets (this change was made prospectively effective 4/1/26 since these adjustments were not material until our acquisition of an investment in a sales-type lease on 4/23/26). Diluted AFFO also includes adjustments to Diluted FFO, as adjusted for comparability for the effects of the items noted above pertaining to unconsolidated real estate JVs that were allocable to our ownership interest in the JVs. 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 or loss is the most directly comparable GAAP measure to this non-GAAP measure.


Diluted FFO available to common share and common unit holders (“Diluted FFO”)

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 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 (which includes discontinued operations, if any) is useful to investors because it is the numerator used to compute Diluted FFO per share, discussed below. We believe that net income or loss is the most directly comparable GAAP measure to this non-GAAP measure.


Diluted FFO available to common share and common unit holders, as adjusted for comparability (“Diluted FFO, as adjusted for comparability”)

Diluted FFO or FFO adjusted to exclude: operating property acquisition costs (for acquisitions classified as business combinations); gain or loss on early extinguishment of debt; demolition costs on redevelopment and nonrecurring improvements; 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; and executive transition costs associated with named executive officers. Diluted FFO, as adjusted for comparability also includes adjustments to Diluted FFO for the effects of the items noted above pertaining to unconsolidated real estate JVs that were allocable to our ownership interest in the JVs. 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. We believe that net income or loss is the most directly comparable GAAP measure to this non-GAAP measure.


Diluted FFO per share

Diluted FFO divided by the sum of the (1) weighted average common shares outstanding during a period, (2) weighted average common units outstanding during a period, and (3) 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 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 or loss available to common shareholders. We believe that diluted EPS is the most directly comparable GAAP measure to this non-GAAP measure.


39			3Q 2026 Supplemental Information Package

COPT Defense Properties

Definitions


Diluted FFO per share, as adjusted for comparability

Diluted FFO available to common share and common unit holders, as adjusted for comparability divided by the sum of the (1) weighted average common shares outstanding during a period, (2) weighted average common units outstanding during a period, and (3) 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 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 to this non-GAAP measure.


Earnings before interest, income taxes, depreciation, and amortization for real estate (“EBITDAre”)

Net income or loss adjusted for the effects of interest expense, depreciation and amortization, gains on sales and impairment losses of real estate and investments in unconsolidated real estate JVs, and income taxes. EBITDAre also includes adjustments to net income or loss for the effects of the items noted above pertaining to unconsolidated real estate JVs that were allocable to our ownership interest in the JVs. While EBITDA (earnings before interest, taxes, depreciation, and amortization) is a universally-defined supplemental measure, EBITDAre incorporates additional adjustments for gains and losses from investing activities related to our investments in operating properties. We believe that EBITDAre is a useful supplemental measure for assessing our un-levered performance. We believe that net income or loss is the most directly comparable GAAP measure to this non-GAAP measure.


Funds from operations (“FFO” or “FFO per Nareit”)

Net income or loss computed using GAAP, excluding gains on sales and impairment losses of real estate and investments in unconsolidated real estate JVs (net of associated income tax) and real estate-related depreciation and amortization. FFO also includes adjustments to net income or loss for the effects of the items noted above pertaining to unconsolidated real estate JVs that were allocable to our ownership interest in the JVs. 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 on sales and impairment losses of real estate (net of associated income tax) and real estate-related depreciation and amortization, FFO can help one compare our operating performance between periods. We believe that net income or loss is the most directly comparable GAAP measure to this non-GAAP measure.


Gross debt

Debt reported on our consolidated balance sheet adjusted to exclude net discounts, commissions, and premiums and deferred financing costs, as further adjusted to include outstanding debt of unconsolidated real estate JVs that were allocable to our ownership interest in the JVs. We believe that this measure is useful to investors as it represents our total outstanding debt, including our share of unconsolidated joint venture debt. We believe that debt reported on our consolidated balance sheet is the most directly comparable GAAP measure to this non-GAAP measure.


In-place adjusted EBITDA

Adjusted EBITDA, as further adjusted for: (1) certain events occurring in a three month period to reflect Adjusted EBITDA as if the events occurred at the beginning of such period, including: (a) properties acquired, placed in service or expanded upon subsequent to the commencement of a period made in order to reflect a full period of ownership/operations; (b) properties removed from service or in which we disposed of interests; (c) significant mid-period occupancy changes associated with properties recently placed in service or acquired as if such occupancy changes occurred at the beginning of such period; and (2) adjustments to deferred rental revenue associated with changes in our assessment of collectability. The measure also includes adjustments for the effects of the items noted above pertaining to unconsolidated real estate JVs that were allocable to our ownership interest in the JVs. We believe that the pro forma adjustments described above are consistent with the requirements for preparation of amounts presented on a pro forma basis in accordance with Article 11 of Regulation S-X. We believe that in-place adjusted EBITDA is a useful supplemental measure of performance for assessing our un-levered performance and ability to repay outstanding debt from operations, as further adjusted for changes in operating properties subsequent to the commencement of a quarter and for the other items noted above that we believe are not closely correlated with our operating performance and are not relevant to an investor’s evaluation of our ability to repay debt. We believe that net income or loss is the most directly comparable GAAP measure to this non-GAAP measure.


Net debt

Gross debt (total outstanding debt reported per our balance sheet as adjusted to exclude net discounts, commissions, and premiums and deferred financing costs), as adjusted to subtract cash and cash equivalents as of the end of the period. The measure also includes adjustments to gross debt for the effects of the items noted above pertaining to unconsolidated real estate JVs that were allocable to our ownership interest in the JVs. We use net debt for purposes of calculating our net debt to adjusted book, which we believe is a useful supplemental measure for investors to use in further understanding the relationship of our outstanding debt to our assets available to service such debt. We believe that debt reported on our consolidated balance sheet is the most directly comparable GAAP measure to this non-GAAP measure.


40			3Q 2026 Supplemental Information Package

COPT Defense Properties

Definitions


Net debt adjusted for fully-leased investment properties

Net debt less costs incurred on properties under development and on operating property acquisitions that were 100% leased. We believe that this supplemental measure is useful in providing investors the impact to our debt of these fully leased properties that are not yet contributing to our adjusted EBITDA. We believe that debt reported on our consolidated balance sheet is the most directly comparable GAAP measure to this non-GAAP measure.


Net debt to Adjusted book

Net debt divided by Adjusted book (defined above).


Net debt to in-place adjusted EBITDA ratio and Net debt adjusted for fully-leased investment properties to in-place adjusted EBITDA ratio

Net debt or Net debt adjusted for fully-leased investment properties divided by in-place adjusted EBITDA (defined above) for the three month period that is annualized by multiplying by four.


Net operating income from real estate operations (“NOI”)

Consolidated real estate revenues; consolidated property operating expenses; and the net of revenues and property operating expenses of real estate operations owned through unconsolidated real estate JVs that are allocable to COPT Defense’s ownership interest in the JVs. 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 reportable segments, Same Property groupings, and individual properties. We believe that net income or loss is the most directly comparable GAAP measure to this non-GAAP measure.


NOI fixed charge coverage ratio and Adjusted EBITDA fixed charge coverage ratio

NOI from real estate operations or Adjusted EBITDA divided by the sum of (1) interest expense (excluding amortization of deferred financing costs and amortization of debt discounts, commissions, and premiums, net of amounts capitalized, and gains or losses on interest rate derivatives), (2) scheduled principal amortization on mortgage loans, (3) capitalized interest, (4) dividends on preferred shares, and (5) distributions on preferred units in the Operating Partnership not owned by us.


NOI interest coverage ratio and Adjusted EBITDA interest coverage ratio

NOI from real estate operations or Adjusted EBITDA divided by interest expense (excluding amortization of deferred financing costs and amortization of debt discounts, commissions, and premiums, net of amounts capitalized, gains on losses on interest rate derivatives, and interest expense on debt in default to be extinguished via conveyance of properties).


Payout ratios based on: Diluted FFO; Diluted FFO, as adjusted for comparability; and Diluted AFFO

The sum of dividends on common and deferred shares and distributions to holders of interests in the Operating Partnership to the extent they are dilutive in the respective FFO per share numerators divided by the respective non-GAAP measures.


Replacement capital expenditures

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), (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), or (5) replacements of significant components of a building after the building has reached the end of its original useful life. 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. 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.


Same Property NOI from real estate operations and Same Property cash NOI from real estate operations

NOI, or Cash NOI, from real estate operations of Same Property groupings. We believe that these are important supplemental measures of Same Property operating performance for the same reasons discussed above for NOI from real estate operations and Cash NOI from real estate operations.


41			3Q 2026 Supplemental Information Package

COPT Defense Properties

Definitions

Other Definitions

Acquisition Costs — Transaction costs expensed in connection with executed or anticipated acquisitions of operating properties.

Annualized Rental Revenue (“ARR”) — The monthly contractual base rent as of the reporting date (ignoring free rent then in effect and rent associated with tenant funded landlord assets) multiplied by 12, plus the estimated annualized expense reimbursements under existing leases for occupied space. With regard to properties owned through unconsolidated real estate JVs, we include the portion of ARR allocable to COPT Defense’s ownership interest. We consider ARR to be a useful measure for analyzing revenue sources because, since it is point-in-time based, it does not contain increases and decreases in revenue associated with periods in which lease terms were not in effect; historical revenue under GAAP does contain such fluctuations. We find the measure particularly useful for leasing, tenant, segment, and industry analysis. In instances in which we report ARR per occupied square foot, the measure excludes revenue from leases not associated with our buildings.

Average Escalations — Leasing statistic used to report average increase in rental rates over lease terms for leases with a term of greater than one-year.

Cash Rent — Monthly contractual base rent (ignoring rent abatements and rent associated with tenant funded landlord assets) multiplied by 12, plus estimated annualized expense reimbursements (average for first 12 months of term for new or renewed leases or as of lease expiration for expiring leases). We believe that cash rent is a useful measure for evaluating the rental rates at the time rent payments commence for our leasing activity, including changes in such rates relative to rates that may have been previously in place.

Committed Cost per Square Foot — Tenant improvement allowance (excluding tenant funded landlord assets), leasing commissions, and estimated turn key costs and excludes lease incentives. We believe this is a useful measure for evaluating our costs associated with obtaining new leases.

Compound Annual Growth Rate — The compound annual growth rate for renewed space between the first year cash rent of the expired lease and the first year cash rent of the renewal lease.

Debt to Net Income Ratio — Debt reported on our consolidated balance sheet divided by net income for the three month period that is annualized by multiplying by four. We do not present this ratio for periods with a net loss.

Defense/IT Portfolio — Properties in locations proximate to, or sometimes containing, key U.S. Government (“USG”) defense installations and missions.

Development Properties — Properties under, or contractually committed for, development.

Equity Market Capitalization — The sum of: (1) the product of the closing price of our common shares on the NYSE and the sum of (a) common shares outstanding and (b) common units outstanding; and (2) the liquidation value of preferred shares and preferred units in our operating partnership.

First Generation Space — Newly-developed or redeveloped space that has never been occupied.

Investment Space Leased — Vacant space leased within two years of the shell completion date for development properties or acquisition date for operating property acquisitions.

Net Income to Interest Expense Ratio — Net income reported on our consolidated statements of operations divided by interest expense. We do not present this ratio for periods with a net loss.

Net Income Payout Ratio — The sum of (1) dividends on common and deferred shares and distributions to holders of interests in the Operating Partnership divided by (2) net income. We do not present this ratio for periods with a net loss.

Operational Space — The portion of a property in operations (excludes portion under development or redevelopment).

Redevelopment Properties — Properties previously in operations on which activities to substantially renovate such properties were underway or approved.

Same Property — Operating properties stably owned and 100% operational since at least 1/1/25.

Second Generation Space — Space leased that has been previously occupied.

Straight-line Rent — Annual minimum base rents, net of abatements and lease incentives and excluding rent associated with tenant funded landlord assets, on a straight-line basis over the term of the lease, and estimated annual expense reimbursements (as of lease commencement for new or renewed leases or as of lease expiration for expiring leases). We believe that straight-line rent is a useful measures for evaluating the rental rates over the related lease terms for our leasing activity, including changes in such rates relative to rates that may have been previously in place.

Total Market Capitalization — The sum of: (1) consolidated outstanding debt, excluding net discounts, commissions, and premiums and deferred financing costs; (2) the product of the closing price of our common shares on the NYSE and the sum of (a) common shares outstanding and (b) common units outstanding; and (3) the liquidation value of preferred shares and preferred units in our operating partnership.

Total Portfolio — Operating properties, including ones owned through unconsolidated real estate JVs.

Vacancy Leasing Activity Ratio — Square footage associated with prospective tenants for vacant square feet in service divided by total vacant square feet in service.

Vacant Space Leased — Leasing of vacated second-generation space and vacant space leased in development properties and operating property acquisitions after two years from such properties’ shell completion or acquisition date.


42			3Q 2026 Supplemental Information Package


			NEWS RELEASE

			IR Contacts:
			Venkat Kommineni, CFA						Michelle Layne
			443.285.5587						443.285.5452
			venkat.kommineni@copt.com						michelle.layne@copt.com

COPT Defense Reports Third Quarter 2026 Results

_______________________________________________________________

EPS of $0.41

FFO per Share, As Adjusted for Comparability, of $0.71

2.9% FFO per Share Growth Year-over-Year

2-cents above the Midpoint of Guidance

Increased Midpoint of Guidance for 2026 FFO per Share, As Adjusted for Comparability, by 2-cents to $2.80

Implies 2.9% FFO per Share Growth for the Year

Same Property Cash NOI Increased 3.2% and 5.3% Year-to-Date

Increased Midpoint of 2026 Guidance by 25 basis points to 4.25%

Occupancy and Leased Levels

Total Portfolio 94.0% Occupied and 95.0% Leased

Defense/IT Portfolio 95.2% Occupied and 96.2% Leased

_______________________________________________________________

Leasing Activity

Total Leasing in 3Q26 and YTD of 842,000 SF and 3.0 million SF

Vacancy Leasing in 3Q26 and YTD of 222,000 SF and 453,000 SF

Increased Annual Target to 625,000 SF from 475,000 SF

Renewal Leasing in 3Q26 and YTD of 545,000 SF and 2.1 million SF

Tenant Retention in 3Q26 and YTD of 70% and 80%

Decreased Midpoint of 2026 Guidance by 2.5% to 80% due to Strategic Space Recaptures

Investment Leasing in 3Q26 and YTD of 75,000 SF and 491,000 SF

_______________________________________________________________

Investment Activity

Committed $88 million of Capital to Two Inventory Developments in Huntsville, AL

Increased 2026 Guidance Target by $40 million to $375 million

_______________________________________________________________

COLUMBIA, MD (BUSINESS WIRE) October 29, 2026 - COPT Defense Properties (“COPT Defense” or the “Company”) (NYSE: CDP) announced results for the third quarter ended September 30, 2026.

Management Comments

Stephen E. Budorick, COPT Defense’s President & Chief Executive Officer, commented, “Our track record of outperformance continued in the third quarter, as FFO per share exceeded the midpoint of our guidance by $0.02. The portfolio continues to benefit from strong tenant demand for specialized space across all of our markets, driven by growth in programs supporting the defense of our nation.

We increased the midpoint of guidance for 2026 FFO per share, as adjusted for comparability, by $0.02 to $2.80, which is $0.05 above our initial guidance, and absorbs $0.03 of incremental dilution from our Exchangeable Notes, resulting from our 20% share price increase over the first nine months of the year. We increased the midpoint of 2026 guidance for Same Property cash NOI growth by 25 basis points to 4.25%, capital commitment to new investments by $40 million to $375 million, and capital invested in development and acquisitions by $15 million to $240 million. We decreased the midpoint of tenant retention by 2.5%, to 80%, taking advantage of opportunities to re-lease space to high value tenants with a track record of strong growth. We raised our target for vacancy leasing by over 30% from 475,000 square feet to 625,000 square feet, which is over 50% higher than our initial target of 400,000 square feet. This increased leasing target is driven in part by our decision to proactively capture space to accommodate new higher growth tenancy in Columbia Gateway and in Huntsville, which impacts our retention guidance but de-risks future lease expirations.

We expect the FY 2026 defense budget, along with the FY 2027 base budget request in which a 28% year-over-year increase is proposed, will provide a very supportive backdrop for demand in our portfolio to support priority missions, including intelligence, cybersecurity, and missile defense.”

Financial Highlights

3rd Quarter Financial Results:

•Diluted earnings per share (“EPS”) was $0.41 for the quarter ended September 30, 2026, compared to $0.37 for the quarter ended September 30, 2025.

•Diluted funds from operations per share (“FFOPS”), as calculated in accordance with Nareit’s definition and as adjusted for comparability, was $0.71 for the quarter ended September 30, 2026, compared to $0.69 for the quarter ended September 30, 2025.

Operating Performance Highlights

Operating Portfolio Summary:

•At September 30, 2026, the Company’s 25.3 million square foot total portfolio was 94.0% occupied and 95.0% leased, which includes the 23.3 million square foot Defense/IT Portfolio that was 95.2% occupied and 96.2% leased.

Same Property Performance:

•At September 30, 2026, the Company’s 24.6 million square foot Same Property portfolio was 93.9% occupied and 94.9% leased.

•The Company’s Same Property cash NOI increased 3.2% in the quarter ended September 30, 2026 compared to the same period in 2025.

Leasing:

•Total Square Feet Leased: For the quarter ended September 30, 2026, the Company leased 842,000 square feet, including 545,000 square feet of renewals, 222,000 square feet of vacancy leasing, and 75,000 square feet of investment leasing. For the nine months ended September 30, 2026, the Company executed 3.0 million

square feet of total leasing, including 2.1 million square feet of renewals, 453,000 square feet of vacancy leasing, and 491,000 square feet of investment leasing.

•Tenant Retention Rates: During the quarter ended September 30, 2026, the Company renewed 69.9% of expiring square feet in its total portfolio. During the nine months ended September 30, 2026, the Company renewed 80.0% of expiring square feet in its total portfolio.

•Rent Spreads and Average Escalations on Renewing Leases: For the quarter ended September 30, 2026, straight-line rents on renewals increased 20.3% and cash rents on renewed space increased 8.5%, while annual escalations on renewing leases averaged 2.2%. For the nine months ended September 30, 2026, straight-line rents on renewals increased 12.7% and cash rents on renewed space increased 4.3%, while annual escalations on renewing leases averaged 2.8%.

•Lease Terms: In the quarter ended September 30, 2026, lease terms averaged 4.3 years on renewing leases, 7.2 years on vacancy leasing, and 11.6 years on investment leasing. For the nine months ended September 30, 2026, lease terms averaged 4.2 years on renewing leases, 7.0 years on vacancy leasing, and 12.9 years on investment leasing.

Investment Activity Highlights

•Development Pipeline: The Company’s development pipeline consists of eight properties totaling 1.1 million square feet that were 64% leased as of September 30, 2026. These projects represent a total estimated investment of $528 million, of which $185 million was spent as of September 30, 2026.

Balance Sheet and Capital Transaction Highlights

•For the quarter ended September 30, 2026, the Company’s adjusted EBITDA fixed charge coverage ratio was 4.4x.

•At September 30, 2026, the Company’s net debt to in-place adjusted EBITDA ratio was 5.9x and its net debt adjusted for fully-leased investment properties to in-place adjusted EBITDA ratio was 5.6x.

•At September 30, 2026, the Company’s weighted average effective interest rate on its consolidated debt portfolio was 3.8% with a weighted average maturity of 4 years (assuming exercise of available extension options), and 83% of the Company’s debt was subject to fixed interest rates.

Associated Supplemental Presentation

Prior to the call, the Company will post a slide presentation to accompany management’s prepared remarks for its third quarter 2026 conference call; the presentation can be viewed and downloaded from the ‘Financial Info – Financial Results’ section of COPT Defense’s Investors website:
https://investors.copt.com/financial-information/financial-results

iii

2026 Guidance

Management is revising and increasing the midpoint of its full-year guidance and establishing fourth quarter guidance for diluted EPS, diluted FFOPS, per Nareit, and diluted FFOPS, as adjusted for comparability, as follows:


Reconciliation of Diluted EPS to FFOPS, per Nareit, and As Adjusted for Comparability	Quarter Ending December 31, 2026				Year Ending December 31, 2026
	Low		High		Low		High








Diluted EPS	$	0.29	$	0.31	$	1.43	$	1.45
Real estate-related depreciation and amortization	0.37		0.37		1.48		1.48

Gain on sales of real estate	—		—		(0.14)		(0.14)
Diluted FFOPS, Nareit definition	0.66		0.68		2.77		2.79

Demolition costs on nonrecurring improvements	0.02		0.02		0.02		0.02
Diluted FFOPS, as adjusted for comparability	$	0.68	$	0.70	$	2.79	$	2.81

The Company detailed its initial full year guidance, with supporting assumptions, in a separate press release issued February 5, 2026; that release can be found in the ‘News & Events – Press Releases’ section of COPT Defense’s Investors website: https://investors.copt.com/news-events/press-releases

Conference Call Information

Management will discuss third quarter 2026 results on its conference call tomorrow, details of which are listed below:

Conference Call Date: Friday, October 30, 2026

Time: 12:00 p.m. Eastern Time

Participants must register for the conference call at the link below to receive the dial-in number and personal pin. Registering only takes a few moments and provides direct access to the conference call without waiting for an operator. You may register at any time, including up to and after the call start time:

https://register-conf.media-server.com/register/BI0a191ed3b81d41ebba9fb6ef7dec8896

The conference call will also be available via live webcast in the ‘News & Events – IR Calendar’ section of COPT Defense’s Investors website: https://investors.copt.com/news-events/ir-calendar

Replay Information

A replay of the conference call will be immediately available via webcast only on COPT Defense’s Investors website and will be maintained on the website for approximately 90 days after the conference call.

Definitions

For definitions of certain terms used in this press release, please refer to the information furnished in the Company’s Supplemental Information Package furnished on a Form 8-K which can be found on its website (www.copt.com). Reconciliations of non-GAAP measures to the most directly comparable GAAP measures are included in the attached tables.

About COPT Defense

COPT Defense, an S&P MidCap 400 Company, is a self-managed REIT focused on owning, operating, and developing properties in locations proximate to, or sometimes containing, key U.S. Government (“USG”) defense installations and missions (referred to as its Defense/IT Portfolio). The Company’s tenants include the USG and their defense contractors, who are primarily engaged in priority national security activities, and who generally require mission-critical and high security property enhancements. As of September 30, 2026, the Company’s Defense/IT Portfolio of 202 properties, including 24 owned through unconsolidated joint ventures, encompassed 23.3 million square feet and was 96.2% leased.

Forward-Looking Information

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. Although the Company believes that the expectations, estimates, and projections reflected in such forward-looking statements are based on reasonable assumptions at the time made, 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 and the Company undertakes no obligation to update or supplement any forward-looking statements.

The areas of risk that may affect these expectations, estimates, and projections include, but are not limited to, those risks described in Item 1A of the Company’s Annual Report on Form 10-K for the year ended December 31, 2025.

COPT Defense Properties

Summary Financial Data

(unaudited)

(dollars and shares in thousands, except per share data)


	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2026		2025		2026		2025
Revenues
Lease revenue	$	193,482	$	178,272	$	575,259	$	529,178
Other property revenue	1,853		2,038		5,298		6,186
Construction contract and other service revenues	13,424		8,485		26,231		31,202
Total revenues	208,759		188,795		606,788		566,566
Operating expenses
Property operating expenses	77,217		70,356		231,238		209,311
Depreciation and amortization associated with real estate operations	42,966		40,631		127,940		119,563
Construction contract and other service expenses	12,763		7,952		24,338		29,530

General and administrative expenses	9,047		8,483		26,740		24,833
Leasing expenses	2,780		2,449		8,863		8,061
Business development expenses and land carry costs	729		1,098		2,866		3,203
Total operating expenses	145,502		130,969		421,985		394,501
Interest expense	(24,439)		(20,894)		(72,879)		(62,336)
Interest and other income, net	2,984		2,591		9,912		5,382
Gain on sales of real estate	7,673		3,018		14,697		3,318



Income before equity in income of unconsolidated entities and income taxes	49,475		42,541		136,533		118,429
Equity in income of unconsolidated entities	415		1,815		2,213		2,541
Income tax expense	(96)		(612)		(254)		(832)


Net income	49,794		43,744		138,492		120,138
Net income attributable to noncontrolling interests
Common units in the Operating Partnership (“OP”)	(1,069)		(924)		(2,919)		(2,496)

Other consolidated entities	(984)		(1,093)		(2,839)		(2,828)



Net income attributable to common shareholders	$	47,741	$	41,727	$	132,734	$	114,814

Earnings per share (“EPS”) computation
Numerator for diluted EPS
Net income attributable to common shareholders	$	47,741	$	41,727	$	132,734	$	114,814
Amount allocable to share-based compensation awards	(183)		(133)		(525)		(340)



Numerator for diluted EPS	$	47,558	$	41,594	$	132,209	$	114,474
Denominator
Weighted average common shares - basic	112,886		112,485		112,855		112,442
Dilutive effect of share-based compensation awards	945		702		971		749

Dilutive exchangeable debt	2,088		—		1,183		—


Weighted average common shares - diluted	115,919		113,187		115,009		113,191
Diluted EPS	$	0.41	$	0.37	$	1.15	$	1.01

COPT Defense Properties

Summary Financial Data

(unaudited)

(in thousands, except per share data)


	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2026		2025		2026		2025
Net income	$	49,794	$	43,744	$	138,492	$	120,138
Real estate-related depreciation and amortization	42,966		40,631		127,940		119,563

Gain on sales of real estate	(7,673)		(3,018)		(14,697)		(3,318)

Depreciation and amortization on unconsolidated real estate JVs	718		733		2,186		2,206
Gain on sale of real estate on unconsolidated real estate JV	—		—		(1,276)		—
Funds from operations (“FFO”)	85,805		82,090		252,645		238,589
FFO allocable to other noncontrolling interests	(1,342)		(1,502)		(3,906)		(4,042)
Basic FFO allocable to share-based compensation awards	(620)		(548)		(1,840)		(1,628)

Basic FFO available to common share and common unit holders (“Basic FFO”)	83,843		80,040		246,899		232,919


Diluted FFO adjustments allocable to share-based compensation awards	63		53		190		294
Diluted FFO available to common share and common unit holders (“Diluted FFO”)	83,906		80,093		247,089		233,213

Loss on early extinguishment of debt on unconsolidated real estate JVs	—		28		—		28



Demolition costs on nonrecurring improvements	97		—		97		—




Diluted FFO comparability adjustments allocable to share-based compensation awards	(1)		—		(1)		—
Diluted FFO available to common share and common unit holders, as adjusted for comparability	84,002		80,121		247,185		233,241
Straight line rent adjustments and lease incentive amortization	(828)		5,053		3,219		1,518
Amortization of intangibles and other assets included in net operating income (“NOI”)	(5)		42		161		268
Sales-type lease adjustments	33		—		134		—
Share-based compensation, net of amounts capitalized	3,450		2,961		10,012		8,739
Amortization of deferred financing costs	778		657		2,404		1,981
Amortization of net debt discounts and commissions, net of amounts capitalized	1,087		1,070		3,380		3,181

Replacement capital expenditures	(22,997)		(26,982)		(67,319)		(72,365)
Other	(136)		352		406		508
Diluted adjusted funds from operations available to common share and common unit holders (“Diluted AFFO”)	$	65,384	$	63,274	$	199,582	$	177,071
Diluted FFO per share	$	0.71	$	0.69	$	2.11	$	2.02
Diluted FFO per share, as adjusted for comparability	$	0.71	$	0.69	$	2.11	$	2.02
Dividends/distributions per common share/unit	$	0.32	$	0.305	$	0.96	$	0.915

vii

COPT Defense Properties

Summary Financial Data

(unaudited)

(dollars and shares in thousands, except per share data)


	September 30, 2026			December 31, 2025
Balance sheet data
Properties, net of accumulated depreciation	$	3,861,398		$	3,783,477
Total assets	$	4,573,242		$	4,701,790
Debt per balance sheet	$	2,579,733		$	2,767,834
Total liabilities	$	2,952,058		$	3,114,115
Redeemable noncontrolling interest	$	25,031		$	25,506
Total equity	$	1,596,153		$	1,562,169
Debt to assets	56.4		%	58.9		%
Net debt to adjusted book	39.9		%	40.5		%

Defense/IT Portfolio data (as of period end)
Number of operating properties	202			201
Total operational square feet (in thousands)	23,316			23,159
% Occupied	95.2		%	95.5		%
% Leased	96.2		%	96.5		%


	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2026		2025		2026		2025
GAAP
Payout ratio
Net income	74.5	%	80.5	%	80.4	%	87.9	%
Debt ratios
Net income to interest expense ratio	2.0	x	2.1	x	1.9	x	1.9	x
Debt to net income ratio	13.0	x	14.0	x	N/A		N/A
Non-GAAP
Payout ratios
Diluted FFO	43.9	%	43.7	%	44.8	%	45.0	%
Diluted FFO, as adjusted for comparability	43.9	%	43.7	%	44.7	%	45.0	%
Diluted AFFO	56.4	%	55.3	%	55.4	%	59.3	%
Debt ratios
Adjusted EBITDA fixed charge coverage ratio	4.4	x	4.8	x	4.3	x	4.8	x
Net debt to in-place adjusted EBITDA ratio	5.9	x	6.1	x	N/A		N/A

Net debt adjusted for fully-leased investment properties to in-place adjusted EBITDA ratio	5.6	x	5.8	x	N/A		N/A


Reconciliation of denominators for per share measures
Denominator for diluted EPS	115,919		113,187		115,009		113,191
Weighted average common units	2,237		2,182		2,177		2,136






Denominator for diluted FFO per share and as adjusted for comparability	118,156		115,369		117,186		115,327

viii

COPT Defense Properties

Summary Financial Data

(unaudited)

(in thousands)


	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2026		2025		2026		2025
Numerators for payout ratios
Dividends on unrestricted common and deferred shares	$	36,143	$	34,332	$	108,417	$	102,974
Distributions on unrestricted common units	715		658		2,143		1,985
Dividends and distributions on restricted shares and units	239		209		753		663
Total dividends and distributions for GAAP payout ratio	37,097		35,199		111,313		105,622
Dividends and distributions on antidilutive shares and units	(230)		(202)		(723)		(592)
Dividends and distributions for non-GAAP payout ratios	$	36,867	$	34,997	$	110,590	$	105,030

Reconciliation of net income to earnings before interest, income taxes, depreciation and amortization for real estate (“EBITDAre”), adjusted EBITDA, and in-place adjusted EBITDA
Net income	$	49,794	$	43,744	$	138,492	$	120,138
Interest expense	24,439		20,894		72,879		62,336
Income tax expense	96		612		254		832
Real estate-related depreciation and amortization	42,966		40,631		127,940		119,563
Other depreciation and amortization	482		428		1,364		1,438

Gain on sales of real estate	(7,673)		(3,018)		(14,697)		(3,318)

Adjustments from unconsolidated real estate JVs	1,797		1,758		4,105		4,791
EBITDAre	111,901		105,049		330,337		305,780
Credit loss (recoveries) expense	(1,096)		(324)		(2,443)		1,378
Business development expenses	488		731		1,940		2,065

Demolition costs on nonrecurring improvements	97		—		97		—
Executive transition costs	—		—		—		78

Loss on early extinguishment of debt on unconsolidated real estate JVs	—		28		—		28

Net gain on other investments	—		(1,713)		(29)		(1,713)
Adjusted EBITDA	111,390		103,771		$	329,902	$	307,616
Pro forma NOI adjustment for property changes within period	1,150		21
Change in collectability of deferred rental revenue	32		—



In-place adjusted EBITDA	$	112,572	$	103,792

Reconciliations of tenant improvements and incentives, building improvements, and leasing costs for operating properties to replacement capital expenditures
Tenant improvements and incentives	$	19,173	$	24,769	$	54,977	$	53,820
Building improvements	3,882		3,662		7,916		11,175
Leasing costs	4,946		2,240		7,913		10,630
Net exclusions from tenant improvements and incentives	(4,445)		(3,390)		(2,354)		(93)
Excluded building improvements	(559)		(299)		(1,133)		(2,203)
Excluded leasing costs	—		—		—		(964)

Replacement capital expenditures	$	22,997	$	26,982	$	67,319	$	72,365

COPT Defense Properties

Summary Financial Data

(unaudited)

(in thousands)


	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2026		2025		2026		2025
Reconciliation of interest expense to the denominator for fixed charge coverage-Adjusted EBITDA
Interest expense	$	24,439	$	20,894	$	72,879	$	62,336
Less: Amortization of deferred financing costs	(778)		(657)		(2,404)		(1,981)
Less: Amortization of net debt discounts and commissions, net of amounts capitalized	(1,087)		(1,070)		(3,380)		(3,181)


COPT Defense’s share of interest expense of unconsolidated real estate JVs, excluding amortization of deferred financing costs and net debt premium and gain or loss on interest rate derivatives	971		898		2,875		2,409
Scheduled principal amortization	20		458		677		1,376
Capitalized interest, excluding amortization of deferred financing costs	2,031		1,292		5,284		3,345


Denominator for fixed charge coverage-Adjusted EBITDA	$	25,596	$	21,815	$	75,931	$	64,304

Reconciliation of net income to NOI from real estate operations, same property NOI from real estate operations, and same property cash NOI from real estate operations
Net income	$	49,794	$	43,744	$	138,492	$	120,138
Construction contract and other service revenues	(13,424)		(8,485)		(26,231)		(31,202)
Depreciation and other amortization associated with real estate operations	42,966		40,631		127,940		119,563
Construction contract and other service expenses	12,763		7,952		24,338		29,530

General and administrative expenses	9,047		8,483		26,740		24,833
Leasing expenses	2,780		2,449		8,863		8,061
Business development expenses and land carry costs	729		1,098		2,866		3,203
Interest expense	24,439		20,894		72,879		62,336
Interest and other income, net	(2,984)		(2,591)		(9,912)		(5,382)
Gain on sales of real estate	(7,673)		(3,018)		(14,697)		(3,318)

Equity in income of unconsolidated entities	(415)		(1,815)		(2,213)		(2,541)
Unconsolidated real estate JVs NOI allocable to COPT Defense included in equity in income of unconsolidated entities	2,212		1,864		6,318		5,623
Income tax expense	96		612		254		832



NOI from real estate operations	120,330		111,818		355,637		331,676
Non-Same Property NOI from real estate operations	(6,050)		(541)		(16,009)		(1,446)
Same Property NOI from real estate operations	114,280		111,277		339,628		330,230
Straight line rent adjustments and lease incentive amortization	1,108		2,185		8,329		(908)
Amortization of acquired above- and below-market rents	15		41		220		170

Lease termination fees, net	(1,901)		(1,191)		(3,921)		(2,753)
Tenant funded landlord assets and lease incentives	(3,054)		(5,239)		(14,900)		(13,875)
Cash NOI adjustments in unconsolidated real estate JVs	(421)		(209)		(1,063)		(689)
Sales-type lease adjustments	243		—		482		—
Same Property Cash NOI from real estate operations	$	110,270	$	106,864	$	328,775	$	312,175

COPT Defense Properties

Summary Financial Data

(unaudited)

(in thousands)


	September 30, 2026		December 31, 2025
Reconciliation of total assets to adjusted book
Total assets	$	4,573,242	$	4,701,790
Accumulated depreciation	1,798,284		1,682,367

Accumulated amortization of intangibles on property acquisitions and deferred leasing costs	226,159		228,656

COPT Defense’s share of liabilities of unconsolidated real estate JVs	82,849		82,039
COPT Defense’s share of accumulated depreciation and amortization of unconsolidated real estate JVs	17,265		16,000
Less: Property - operating lease liabilities	(41,178)		(45,012)
Less: Property - finance lease liabilities	(1,090)		(363)
Less: Cash and cash equivalents	(24,262)		(274,986)
Less: COPT Defense’s share of cash of unconsolidated real estate JVs	(1,332)		(1,898)
Adjusted book	$	6,629,937	$	6,388,593


	September 30, 2026		December 31, 2025		September 30, 2025
Reconciliation of debt to net debt and net debt adjusted for fully-leased investment properties
Debt per balance sheet	$	2,579,733	$	2,767,834	$	2,443,518
Net discounts and commissions and deferred financing costs	19,267		23,466		19,123
COPT Defense’s share of unconsolidated JV gross secured debt	75,250		75,250		75,250
Gross debt	2,674,250		2,866,550		2,537,891
Less: Cash and cash equivalents	(24,262)		(274,986)		(23,687)
Less: COPT Defense’s share of cash of unconsolidated real estate JVs	(1,332)		(1,898)		(2,080)
Net debt	2,648,656		2,589,666		2,512,124


Costs incurred on fully-leased development properties	(112,988)		(8,226)		(83,794)

Net debt adjusted for fully-leased investment properties	$	2,535,668	$	2,581,440	$	2,428,330