EBITDA rises 441%, Adjusted EBITDA reaches second-highest quarterly level in company history while CoStar Group continues investing in long-term growth

CoStar Group, Inc. (NASDAQ:CSGP), a leading provider of online real estate marketplaces, information, analytics, and 3D digital twin technology in the property markets, announced today that revenue for the quarter ended June 30, 2026 was $925 million, up 18% over revenue of $781 million for the quarter ended June 30, 2025. Net new bookings were $69 million, up 3% from Q1 2026.

Net income was $55 million and earnings per diluted share was $0.14 for the second quarter of 2026, compared with net income of $6 million, and earnings per diluted share of $0.01, in the prior year period. Adjusted Net Income rose to $128 million in the second quarter, up 73% year-over-year. Adjusted EPS was $0.32 in the second quarter, up 88% year-over-year. EBITDA was $157 million, up 441% year-over-year. Adjusted EBITDA was $184 million in the second quarter of 2026, an increase of 116% from the prior year.

"The second quarter marked a profitability inflection point for CoStar Group as Adjusted EBITDA more than doubled year-over-year to $184 million. We held operating cost growth to just 2%, and we delivered our 61st consecutive quarter of double-digit revenue growth," said Andy Florance, Founder and Chief Executive Officer of CoStar Group. "For the first time, our residential segment turned Adjusted EBITDA positive — a $41 million improvement over the first quarter — and we expect to deliver the highest full-year Adjusted EBITDA in our company's history."

Florance continued, "We continue to capture more of CoStar Group's $100 billion total addressable market through new product launches and geographic expansion. Building on February's transformative launch of Homes.com Ai, we introduced Apartments.com Ai in June. Within weeks, Apartments.com Ai users completed more than half a million AI sessions — averaging 20 minutes per session, 2.8 times longer than non-AI users, viewing twice as many listings, with 3D tour usage up 224% and traffic-to-lead conversion up 256%. Our product roadmap extends these AI capabilities across CoStar, LoopNet, and our international businesses. This quarter we also delivered four major launches on our core CoStar platform — including CoStar Rent Benchmark, built from four million AI-abstracted lease agreements, and CoStar’s market entry into France. We accomplished all of this while reducing our projected expense base by roughly $100 million versus our original guidance, giving us a head start on our 2028 and 2030 Adjusted EBITDA targets."


Year 2025-2026 Quarterly Results - Unaudited
(in millions, except per share data)
	2025				2026
	Q1	Q2	Q3	Q4	Q1	Q2

Revenue	$732	$781	$834	$900	$897	$925
Net income (loss)	$(15)	$6	$(31)	$47	$3	$55
Earnings per share - diluted	$(0.04)	$0.01	$(0.07)	$0.11	$0.01	$0.14
Weighted-average outstanding shares - diluted	411	424	420	420	414	404

EBITDA	$(1)	$29	$13	$129	$81	$157
Adjusted EBITDA	$66	$85	$114	$177	$132	$184
Adjusted Net Income	$63	$74	$96	$131	$94	$128
Adjusted EPS	$0.15	$0.17	$0.23	$0.31	$0.23	$0.32

2026 Outlook

The Company is affirming its Adjusted EBITDA guidance for the full year of 2026 in a range of $780 million to $820 million, which represents an increase of $30 million at the midpoint of the range from its guidance in February 2026. For the third quarter of 2026, the Company expects Adjusted EBITDA in the range of $190 million to $210 million, representing a margin of 21% at the midpoint of the range.

The Company is revising its revenue guidance for 2026 to a range of $3.715 billion to $3.755 billion, representing revenue growth of approximately 15% year-over-year at the midpoint of the range. The Company expects revenue for the third quarter of 2026 in the range of $935 million to $945 million, representing revenue growth of approximately 13% year-over-year at the midpoint of the range.

The Company reaffirms its full year 2026 Adjusted EPS in a range of $1.32 to $1.39 based on 405 million shares. For the third quarter of 2026, the Company expects Adjusted EPS in a range of $0.31 to $0.34 based on 403 million shares. These ranges include an estimated non-GAAP tax rate of 26% for the full year and the third quarter of 2026.

The preceding forward-looking statements reflect CoStar Group’s expectations as of July 28, 2026, including forward-looking non-GAAP financial measures on a consolidated basis, based on current estimates, expectations, observations, and trends. Given the risk factors, rapidly evolving economic environment, and uncertainties and assumptions discussed in this release and in our quarterly reports on Form 10-Q and annual reports on Form 10-K, actual results may differ materially. Other than in publicly available statements, the Company does not intend to update its forward-looking statements until its next quarterly results announcement.

Reconciliations of EBITDA, Adjusted EBITDA, Adjusted Net Income, and Adjusted EPS to the most directly comparable GAAP measures are shown in detail below, along with definitions for those terms. A reconciliation of forward-looking non-GAAP guidance to the most directly comparable GAAP measure, net income (loss), can be found within the tables included in this release.

Non-GAAP Financial Measures

For information regarding the purpose for which management uses the non-GAAP financial measures disclosed in this release and why management believes they provide useful information to investors regarding the Company’s financial condition and results of operations, please refer to the Company’s latest periodic report.

EBITDA is our net income (loss) before interest income or expense, net, other income or expense, net, income taxes, depreciation, and amortization. We typically disclose EBITDA on a consolidated and on an operating segment basis in our earnings releases, investor conference calls, and filings with the SEC.

Adjusted EBITDA is different from EBITDA because we further adjust EBITDA for stock-based compensation expense, acquisition- and integration-related costs, restructuring and related costs, including certain advisory fees; and settlements and impairments incurred outside our ordinary course of business, including judgments. Adjusted EBITDA margin represents Adjusted EBITDA divided by revenues for the period.

Adjusted Net Income represents our net income (loss) adjusted for stock-based compensation expense, acquisition- and integration-related costs, including gains or losses on equity investments acquired in prospective targets and related to deal-contingent financial instruments, restructuring costs, settlement and impairment costs incurred outside our ordinary course of business, including judgments and related, non-recurring interest; and amortization of acquired intangible assets and other related costs, and then subtracting an assumed provision for income taxes. In 2026, we are assuming a 26% tax rate to approximate our statutory corporate tax rate, excluding the impact of discrete items, to determine Adjusted Net Income for each quarterly period, year-to-date period and annual period.

Adjusted EPS represents Adjusted Net Income divided by the number of diluted shares outstanding for the period used in the calculation of GAAP earnings per diluted share. For periods with GAAP net losses and Adjusted Net Income, the weighted average outstanding shares used to calculate Adjusted EPS includes potentially dilutive securities that were excluded from the calculation of GAAP earnings per share as the effect was anti-dilutive.

Operating Metrics

Net new bookings is calculated based on the annualized amount of change in the Company's sales bookings resulting from new subscription-based contracts, changes to existing subscription-based contracts, and cancellations of subscription-based contracts for the period reported. Information regarding net new bookings is not comparable to, nor should it be substituted for, an analysis of the Company's revenues over time.

Earnings Conference Call

Management will conduct a conference call to discuss the second quarter 2026 results and the Company’s outlook at 5:00 PM ET on July 28, 2026. A live audio webcast of the conference will be available in listen-only mode through the Investors section of the CoStar Group website: https://investors.costargroup.com. A replay of the webcast audio will also be available in the Investors section of our website for a period of time following the call.


CoStar Group, Inc.
Condensed Consolidated Statements of Operations - Unaudited
(in millions, except per share data)

	Three Months Ended June 30,						Six Months Ended June 30,
	2026			2025			2026			2025
Revenue	$	925		$	781		$	1,822		$	1,513
Cost of revenue		197			168			393			321
Gross profit		728			613			1,429			1,192

Operating expenses:
Selling and marketing (excluding customer base amortization)		395			395			816			764
Software development		107			96			221			191
General and administrative		114			122			240			263
Customer base amortization		36			27			73			44
		652			640			1,350			1,262
Income (loss) from operations		76			(27	)		79			(70	)
Interest income (expense), net		(2	)		33			8			71
Other income (expense), net		—			16			(1	)		14
Income before income taxes		74			22			86			15
Income tax expense		19			16			28			24
Net income (loss)	$	55		$	6		$	58		$	(9	)

Earnings per share - basic	$	0.14		$	0.01		$	0.14		$	(0.02	)
Earnings per share - diluted	$	0.14		$	0.01		$	0.14		$	(0.02	)


Weighted-average outstanding shares - basic		404.1			419.6			408.5			415.1
Weighted-average outstanding shares - diluted		404.4			424.3			409.1			415.1


CoStar Group, Inc.
Condensed Consolidated Balance Sheets - Unaudited
(in millions)

	June 30, 2026			December 31, 2025
ASSETS
Current assets:
Cash and cash equivalents	$	1,266		$	1,633
Restricted cash		—			100
Accounts receivable		289			263
Less: Allowance for credit losses		(36	)		(29	)
Accounts receivable, net		253			234
Income taxes receivable		18			18
Prepaid expenses and other current assets		117			134
Total current assets		1,654			2,119

Deferred income taxes, net		23			47
Property and equipment, net		1,443			1,323
Lease right-of-use assets		128			123
Goodwill		4,981			4,944
Intangible assets, net		1,669			1,771
Deferred commission costs, net		190			184
Deposits and other assets		51			27
Total assets	$	10,139		$	10,538
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Accounts payable	$	44		$	42
Accrued wages and commissions		156			145
Accrued expenses		254			203
Litigation accrual		—			99
Lease liabilities		30			28
Deferred revenue		233			205
Other current liabilities		30			24
Total current liabilities		747			746

Long-term debt, net		994			993
Deferred income taxes, net		245			238
Income taxes payable		30			27
Lease and other long-term liabilities		178			163
Total liabilities		2,194			2,167
Stockholders' equity attributable to CoStar Group		7,932			8,334
Equity attributable to noncontrolling interest		13			37
Total equity		7,945			8,371
Total liabilities and stockholders' equity	$	10,139		$	10,538


CoStar Group, Inc.
Condensed Consolidated Statements of Cash Flows - Unaudited
(in millions)

	Six Months Ended June 30,
	2026			2025
Operating activities:
Net income (loss)	$	58		$	(9	)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization		167			113
Amortization of deferred commissions costs		60			67
Non-cash lease expense		15			16
Stock-based compensation expense		80			82
Deferred income taxes, net		24			(5	)
Credit loss expense		17			17
Unrealized gains on investments and deal-contingent foreign currency forward contracts		—			(24	)
Other operating activities, net		3			(2	)
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable		(34	)		(19	)
Prepaid expenses, other current assets and other assets		1			13
Deferred commissions		(67	)		(80	)
Accounts payable and other liabilities		30			54
Litigation accrual		(109	)		—
Lease liabilities		(8	)		(19	)
Income taxes payable, net		2			(21	)
Deferred revenue		28			17
Net cash provided by operating activities		267			200

Investing activities:
Proceeds from sale and settlement of investments and other assets		2			205
Purchases of property, equipment, and other assets for new campuses		(83	)		(173	)
Purchase of equity securities		—			(285	)
Cash paid for acquisitions, net of cash acquired		—			(750	)
Purchases of property, equipment, and other assets		(29	)		(58	)
Net cash used in investing activities		(110	)		(1,061	)

Financing activities:
Repurchase of restricted stock to satisfy tax withholding obligations		(24	)		(47	)
Repurchases of stock		(587	)		(64	)
Proceeds from exercise of stock options and employee stock purchase plan		18			14
Purchase of noncontrolling interest		(26	)		—
Other financing activities, net		(3	)		(2	)
Net cash used in financing activities		(622	)		(99	)

Effect of foreign currency exchange rates on cash, cash equivalents, and restricted cash		(2	)		6
Net decrease in cash, cash equivalents, and restricted cash		(467	)		(954	)
Cash, cash equivalents, and restricted cash at the beginning of period		1,733			4,681
Cash, cash equivalents, and restricted cash at the end of period	$	1,266		$	3,727


CoStar Group, Inc.
Disaggregated Revenues - Unaudited
(in millions)

	Three Months Ended June 30,				Six Months Ended June 30,
	2026		2025		2026		2025
Commercial Real Estate
CoStar	$	337	$	310	$	668	$	615
LoopNet		87		76		172		149
Other Commercial Real Estate		57		60		113		91
Total Commercial Real Estate		481		446		953		855
Residential Real Estate		444		335		869		658
Total revenue	$	925	$	781	$	1,822	$	1,513


CoStar Group, Inc.
Disaggregated Revenues - Unaudited
(in millions)

	2025								2026
	Q1		Q2		Q3		Q4		Q1		Q2
Commercial Real Estate
CoStar	$	305	$	310	$	318	$	325	$	331	$	337
LoopNet		73		76		79		84		85		87
Other Commercial Real Estate		31		60		64		62		56		57
Total Commercial Real Estate		409		446		461		471		472		481
Residential Real Estate		323		335		373		429		425		444
Total revenue	$	732	$	781	$	834	$	900	$	897	$	925


CoStar Group, Inc.
Reconciliation of Forward-Looking Guidance - Unaudited
(in millions, except per share data)

Reconciliation of Forward-Looking Guidance, Net Income to Adjusted Net Income and Adjusted EPS
	Guidance Range						Guidance Range
	For the Three Months						For the Year Ending
	Ending September 30, 2026						December 31, 2026
	Low			High			Low			High
Net income	$	51		$	65		$	218		$	247
Income tax expense		19			25			87			98
Income before income taxes		70			90			305			345
Amortization of acquired intangible assets		62			62			251			251
Stock-based compensation expense		34			34			156			156
Acquisition and integration related costs		2			2			15			15
Interest related to settlements		—			—			9			9
Restructuring and related costs		—			—			4			4
Settlements and impairments		—			—			(18	)		(18	)
Adjusted income before income taxes		168			188			722			762
Assumed rate for income tax expense⁽¹⁾		26	%		26	%		26	%		26	%
Assumed provision for income tax expense		(44	)		(49	)		(187	)		(198	)
Adjusted Net Income	$	124		$	139		$	535		$	564

Earnings per share - diluted	$	0.13		$	0.16		$	0.54		$	0.61
Adjusted EPS	$	0.31		$	0.34		$	1.32		$	1.39

Adjusted weighted average outstanding shares - diluted		403.0			403.0			405.0			405.0

⁽¹⁾The assumed tax rate approximates our statutory federal and state corporate tax rate for the applicable period.


Reconciliation of Forward-Looking Guidance, Net Income to Adjusted EBITDA

	Guidance Range						Guidance Range
	For the Three Months Ending						For the Year Ending
	September 30, 2026						December 31, 2026
	Low			High			Low			High
Net income	$	51		$	65		$	218		$	247
Amortization of acquired intangible assets in cost of revenues		27			27			108			108
Amortization of acquired intangible assets in operating expenses		35			35			143			143
Depreciation and other amortization		23			23			77			77
Interest income, net		(2	)		(2	)		(13	)		(13	)
Other expense, net		1			1			3			3
Income tax expense, net		19			25			87			98
EBITDA		154			174			623			663
Stock-based compensation expense		34			34			156			156
Acquisition and integration related costs		2			2			15			15
Restructuring and related costs		—			—			4			4
Settlements and impairments		—			—			(18	)		(18	)
Adjusted EBITDA⁽¹⁾	$	190		$	210		$	780		$	820

⁽¹⁾ Totals may not foot due to rounding.

	Guidance Range				Guidance Range
	For the Three Months Ending				For the Year Ending
	September 30, 2026				December 31, 2026
	Low		High		Low		High
EBITDA
Commercial Real Estate	$	137	$	147	$	571	$	591
Residential Real Estate		17		27		52		72
Total EBITDA	$	154	$	174	$	623	$	663

Adjusted EBITDA
Commercial Real Estate	$	162	$	172	$	670	$	690
Residential Real Estate		28		38		110		130
Total Adjusted EBITDA	$	190	$	210	$	780	$	820


CoStar Group, Inc.
Reconciliation of Non-GAAP Financial Measures - Unaudited
(in millions, except per share data)

Reconciliation of Net Income (Loss) to Adjusted Net Income and Adjusted EPS

	Three Months Ended June 30,						Six Months Ended June 30,
	2026			2025			2026			2025
Net income (loss)	$	55		$	6		$	58		$	(9	)
Income tax expense		19			16			28			24
Income before income taxes		74			22			86			15
Amortization of acquired intangible assets		63			44			127			72
Stock-based compensation expense		38			52			80			82
Acquisition and integration related costs included in income (loss) from operations		5			4			12			26
Unrealized gains on investments and deal-contingent foreign currency forward contracts related to an expected acquisition⁽¹⁾		—			(22	)		—			(25	)
Interest related to settlements		9			—			9			—
Restructuring and related costs		2			(1	)		4			6
Settlements and impairments		(18	)		1			(18	)		9
Adjusted income before income taxes		173			100			300			185
Assumed rate for income tax expense⁽²⁾		26	%		26	%		26	%		26	%
Assumed provision for income tax expense		(45	)		(26	)		(78	)		(48	)
Adjusted Net Income	$	128		$	74		$	222		$	137

Earnings per share - diluted	$	0.14		$	0.01		$	0.14		$	(0.02	)
Adjusted EPS	$	0.32		$	0.17		$	0.54		$	0.32

Weighted-average outstanding shares - diluted		404.4			424.3			409.1			415.1
Adjusted dilutive shares⁽³⁾		—			—			—			4.8
Adjusted weighted average shares, diluted		404.4			424.3			409.1			419.9
_________________________
⁽¹⁾ Recorded in other expense, net in the condensed consolidated statements of operations.
⁽²⁾The assumed tax rate approximates our statutory federal and state corporate tax rate for the applicable period.
⁽³⁾Includes the effect of potential common shares, such as the Company's stock options, restricted stock units, and deferred stock units, to the extent the effect is dilutive. In periods with a net loss available to common stockholders, the anti-dilutive effect of these potential common shares is excluded and earnings per share - diluted is equal to earnings per share - basic. Adjusted weighted average shares have been adjusted for these periods to include the dilutive impact.


CoStar Group, Inc.
Reconciliation of Non-GAAP Financial Measures - Unaudited
(in millions)

Reconciliation of Net Income (Loss) to EBITDA and Adjusted EBITDA

	Three Months Ended June 30,						Six Months Ended June 30,
	2026			2025			2026			2025
Net income (loss)	$	55		$	6		$	58		$	(9	)
Amortization of acquired intangible assets in cost of revenues		27			17			54			28
Amortization of acquired intangible assets in operating expenses		36			27			73			44
Depreciation and other amortization		18			12			32			26
Interest income (expense), net		2			(33	)		(8	)		(71	)
Other income (expense), net ⁽¹⁾		—			(16	)		1			(14	)
Income tax expense, net		19			16			28			24
EBITDA		157			29			238			28
Stock-based compensation expense		38			52			80			82
Acquisition and integration related costs		5			4			12			26
Restructuring and related costs		2			(1	)		4			6
Settlements and impairments		(18	)		1			(18	)		9
Adjusted EBITDA	$	184		$	85		$	316		$	151

⁽¹⁾Includes $3 million and $9 million of depreciation and amortization expense, including above-market lease amortization associated with lessor activities for the three months ended June 30, 2026 and 2025, respectively, and $8 million and $14 million for the six months ended June 30, 2026 and 2025, respectively.


CoStar Group, Inc.
Results of Segments - Unaudited⁽¹⁾
(in millions)

	Three Months Ended June 30,						Six Months Ended June 30,
	2026			2025			2026			2025
EBITDA
Commercial Real Estate	$	162		$	118		$	289		$	221
Residential Real Estate		(5	)		(89	)		(51	)		(193	)
Total EBITDA	$	157		$	29		$	238		$	28

Adjusted EBITDA
Commercial Real Estate	$	172		$	161		$	333		$	312
Residential Real Estate		12			(76	)		(17	)		(161	)
Total Adjusted EBITDA	$	184		$	85		$	316		$	151

⁽¹⁾ During the fourth quarter of 2025, we changed the composition of our segments from geography-based to product portfolio-based. We have recast certain prior period disclosures to align with new segments.


CoStar Group, Inc.
Reconciliation of Non-GAAP Financial Measures with Quarterly Results - Unaudited
(in millions, except per share data)

Reconciliation of Net Income (Loss) to Adjusted Net Income and Adjusted EPS

	2025												2026
	Q1			Q2			Q3			Q4			Q1			Q2
Net income (loss)	$	(15	)	$	6		$	(31	)	$	47		$	3		$	55
Income tax expense (benefit)		8			16			(15	)		14			9			19
Income (loss) before income taxes		(7	)		22			(46	)		61			12			74
Amortization of acquired intangible assets		28			44			51			69			64			63
Stock-based compensation expense		30			52			71			41			42			38
Acquisition and integration related costs		22			4			30			7			7			5
(Gains) losses on investments and deal-contingent foreign currency forward contracts related to an acquisition⁽¹⁾		(3	)		(22	)		23			—			—			—
Interest related to settlements		—			—			—			—			—			9
Restructuring and related costs		7			(1	)		—			—			2			2
Settlements and impairments		8			1			—			—			—			(18	)
Adjusted income before income taxes		85			100			129			178			127			173
Assumed rate for income tax expense⁽²⁾		26	%		26	%		26	%		26	%		26	%		26	%
Assumed provision for income tax expense		(22	)		(26	)		(33	)		(47	)		(33	)		(45	)
Adjusted Net Income	$	63		$	74		$	96		$	131		$	94		$	128

Adjusted EPS	$	0.15		$	0.17		$	0.23		$	0.31		$	0.23		$	0.32

Weighted average outstanding shares - diluted		410.5			424.3			419.9			419.6			414.0			404.4
Adjusted dilutive shares⁽³⁾		5.0			—			3.4			—			—			—
Adjusted weighted average outstanding shares, diluted		415.5			424.3			423.3			419.6			414.0			404.4

⁽¹⁾ Recorded in other expense, net in the condensed consolidated statements of operations.
⁽²⁾The assumed tax rate approximates our statutory federal and state corporate tax rate for the applicable period.
⁽³⁾ Diluted earnings per share includes the effect of potential common shares, such as the Company's stock options, restricted stock units, and deferred stock units, to the extent the effect is dilutive. In periods with a net loss, the anti-dilutive effect of these potential common shares is excluded and earnings per share - diluted is equal to earnings per share - basic. In periods with GAAP net losses and Adjusted Net Income, the weighted average shares outstanding have been adjusted to include the dilutive impact on Adjusted EPS.


CoStar Group, Inc.
Reconciliation of Non-GAAP Financial Measures with Quarterly Results - Unaudited
(in millions)

Reconciliation of Net Income (Loss) to EBITDA and Adjusted EBITDA

	2025												2026
	Q1			Q2			Q3			Q4			Q1			Q2
Net income (loss)	$	(15	)	$	6		$	(31	)	$	47		$	3		$	55
Amortization of acquired intangible assets		28			44			51			69			64			63
Depreciation and other amortization		14			12			13			11			14			18
Interest income (expense), net		(38	)		(33	)		(26	)		(13	)		(10	)		2
Other income (expense), net ⁽¹⁾		2			(16	)		21			1			1			—
Income tax expense (benefit)		8			16			(15	)		14			9			19
EBITDA		(1	)		29			13			129			81			157
Stock-based compensation expense		30			52			71			41			42			38
Acquisition and integration related costs		22			4			30			7			7			5
Restructuring and related costs		7			(1	)		—			—			2			2
Settlements and impairments		8			1			—			—			—			(18	)
Adjusted EBITDA	$	66		$	85		$	114		$	177		$	132		$	184

⁽¹⁾Includes $7 million, $9 million, $4 million, $4 million, $5 million, and $3 million of depreciation and amortization expense, including above-market lease amortization, associated with lessor activities, for the three months ending March 31, 2025, June 30, 2025, September 30, 2025, December 31, 2025, March 31, 2026, and June 30, 2026, respectively.


CoStar Group, Inc.
Results of Segments - Unaudited⁽¹⁾
(in millions)

	2025												2026
	Q1			Q2			Q3			Q4			Q1			Q2
EBITDA
Commercial Real Estate	$	103		$	118		$	114		$	145		$	127		$	162
Residential Real Estate		(104	)		(89	)		(101	)		(16	)		(46	)		(5	)
Total EBITDA	$	(1	)	$	29		$	13		$	129		$	81		$	157

Adjusted EBITDA
Commercial Real Estate	$	151		$	161		$	183		$	177		$	161		$	172
Residential Real Estate		(85	)		(76	)		(69	)		—			(29	)		12
Total Adjusted EBITDA	$	66		$	85		$	114		$	177		$	132		$	184

⁽¹⁾ During the fourth quarter of 2025, we changed the composition of our segments from geography-based to product portfolio-based. We have recast certain prior period disclosures to align with new segments.

About CoStar Group

CoStar Group (NASDAQ:CSGP) is a global leader in commercial real estate information, analytics, online marketplaces, and 3D digital twin technology. Founded in 1986, CoStar Group is dedicated to digitizing the world’s real estate, empowering all people to discover properties, insights, and connections that improve their businesses and lives.

CoStar Group’s major brands include CoStar, a leading global provider of commercial real estate data, analytics, and news; LoopNet, the most trafficked commercial real estate marketplace; Apartments.com, the leading platform for apartment rentals; Homes.com, the fastest-growing residential real estate marketplace; and Domain, one of Australia’s leading property marketplaces. CoStar Group’s industry-leading brands also include Matterport, a leading spatial data company whose platform turns buildings into data to make every space more valuable and accessible; STR, a global leader in hospitality data and benchmarking; Ten-X, an online platform for commercial real estate auctions and negotiated bids; and OnTheMarket, a leading residential property portal in the United Kingdom.

CoStar Group’s websites attracted 118 million average monthly unique visitors in the second quarter of 2026, serving clients around the world. Headquartered in Arlington, Virginia, CoStar Group is committed to transforming the real estate industry through innovative technology and comprehensive market intelligence. From time to time, we plan to utilize our corporate website as a channel of distribution for material company information. For more information, visit CoStarGroup.com.

This news release and the Company’s earnings conference call contain "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. Such statements include, but are not limited to, statements about CoStar Group's plans, objectives, expectations, beliefs and intentions and other statements including words such as "hope," "anticipate," "may," "likely," "might," "believe," "expect," "observe," "consider," "think," "intend," "envision," "will," "should," "could," "would," "plan," "target," "goal," "estimate," "predict," "continue," "commit," and "potential" or the negative of these terms or other comparable terminology. Such statements are based upon the current beliefs and expectations of management of CoStar Group and are subject to many risks and uncertainties. Actual results may differ materially from the results anticipated in the forward-looking statements and the assumptions and estimates used as a basis for the forward-looking statements. The following factors, among others, could cause or contribute to such differences: our inability to attract and retain new clients; our inability to successfully develop and introduce new or updated real estate information, analytics, and online marketplaces; the risks related to AI technologies, such as Homes Ai and Apartments Ai; our inability to compete successfully against existing or future competitors in attracting advertisers and in general; the effects of fluctuations and market cyclicality; the effects of global economic uncertainties and downturns or a downturn or consolidation in the real estate industry; our inability to hire qualified persons for, or retain and continue to develop our sales force, or unproductivity of our sales force; our inability to retain and attract highly capable management and operating personnel; the downward pressure that our internal and external investments may place on our operating margins; our inability to increase brand awareness; our inability to maintain or increase internet traffic to our marketplaces, and the risk that the methods, including Google Analytics, that we use to measure average monthly unique visitors to our portals may misstate the actual number of unique persons who visit our network of mobile applications and websites for a given month or may differ from the methods used by competitors; our inability to attract new advertisers; our inability to successfully identify, finance, integrate, and/or manage costs related to acquisitions; our inability to complete certain strategic transactions if a proposed transaction is subject to review or approval by regulatory authorities pursuant to applicable laws or regulations; our inability to realize the benefits of the acquisitions of Matterport, LLC ("Matterport") and Domain Holdings Australia Pty Limited, or our inability to complete the acquisition of Bora Inc. and its subsidiaries ("Zonda") in a timely manner, or at all, or realize the expected benefits of the Zonda acquisition; the inability of third-party suppliers upon which Matterport relies to fulfill its needs; the effects of cyberattacks and security vulnerabilities, and technical problems or disruptions; the significant costs associated with undertaking a large infrastructure project; our inability to generate increased revenues from our current or future geographic expansion plans; the risks related to acceptance of credit cards and debit cards and facilitation of other customer payments; the effects of climate-related events and other events beyond our control; the effects related to attention to climate-related risks and opportunities; our inability to obtain and maintain accurate, comprehensive, or reliable data; our inability to obtain and maintain stable data feeds, or disruption of our data feeds; our inability to enforce or defend our ownership and use of intellectual property; the effects of use of new and evolving technologies, including artificial intelligence, on our ability to protect our data and intellectual property from misappropriation by third parties; our inability to defend against potential legal liability for collecting, displaying, or distributing information; our inability to obtain or retain listings from real estate brokers, agents, property owners, and apartment property managers; our inability to maintain or establish relationships with third-party listing providers; our inability to comply with the rules and compliance requirements of Multiple Listing Services; the risks related to open source software; the risks related to international operations; the effects of foreign currency exchange rate fluctuations; our indebtedness; the effects of a lowering or withdrawal of the ratings assigned to our debt securities by rating agencies; the effects of any actual or perceived failure to comply with privacy or data protection laws, regulations, or standards; the effects of changes in tax laws, regulations, or fiscal and tax policies; the effects of third-party claims, litigation, regulatory proceedings, or government investigations; the risks related to return on investment; and the risks related to the specific timing, price, and size of repurchases under the Stock Repurchase Program, including that the Stock Repurchase Program may be suspended or discontinued at any time at the Company’s discretion. More information about potential factors that could cause results to differ materially from those anticipated in the forward-looking statements include, but are not limited to, those stated in CoStar Group’s filings from time to time with the Securities and Exchange Commission (the "SEC"), including in CoStar Group’s Annual Reports on Form 10-K and Quarterly Reports on Form 10-Q, each of which is filed with the SEC, including in the "Risk Factors" section of those filings, as well as CoStar Group’s other filings with the SEC (including Current Reports on Form 8-K) available at the SEC’s website (www.sec.gov). All forward-looking statements are based on information available to CoStar Group on the date hereof, and CoStar Group assumes no obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by applicable law.

View source version on businesswire.com: https://www.businesswire.com/news/home/20260728790780/en/

Investor Relations:

Rich Simonelli

Head of Investor Relations

CoStar Group Investor Relations

(973) 896-8184

getrich@costar.com

News Media:

Matthew Blocher

Vice President

CoStar Group Corporate Marketing & Communications

(202) 346-6775

mblocher@costar.com