Item 1. Financial Statements

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Item 1. Financial Statements

COSTAR GROUP, INC.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(in millions, except per share data)

(unaudited)

Three Months Ended June 30,Six Months Ended June 30,
2026202520262025
Revenue$925$781$1,822$1,513
Cost of revenue197168393321
Gross profit7286131,4291,192
Operating expenses:
Selling and marketing (excluding customer base amortization)395395816764
Software development10796221191
General and administrative114122240263
Customer base amortization36277344
6526401,3501,262
Income (loss) from operations76(27)79(70)
Interest income (expense), net(2)33871
Other income (expense), net—16(1)14
Income before income taxes74228615
Income tax expense19162824
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 - basic404.1419.6408.5415.1
Weighted-average outstanding shares - diluted404.4424.3409.1415.1

See accompanying notes.

COSTAR GROUP, INC.

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(in millions)

(unaudited)

Three Months Ended June 30,Six Months Ended June 30,
2026202520262025
Net income (loss)$55$6$58$(9)
Other comprehensive income, net of tax
Foreign currency translation adjustment7375846
Other comprehensive income, net of tax7375846
Comprehensive income$62$43$116$37

See accompanying notes.

COSTAR GROUP, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

(in millions)

(unaudited)

June 30, 2026December 31, 2025
ASSETS
Current assets:
Cash and cash equivalents$1,266$1,633
Restricted cash—100
Accounts receivable289263
Less: Allowance for credit losses(36)(29)
Accounts receivable, net253234
Income taxes receivable1818
Prepaid expenses and other current assets117134
Total current assets1,6542,119
Deferred income taxes, net2347
Property and equipment, net1,4431,323
Lease right-of-use assets128123
Goodwill4,9814,944
Intangible assets, net1,6691,771
Deferred commission costs, net190184
Deposits and other assets5127
Total assets$10,139$10,538
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Accounts payable$44$42
Accrued wages and commissions156145
Accrued expenses254203
Litigation accrual—99
Lease liabilities3028
Deferred revenue233205
Other current liabilities3024
Total current liabilities747746
Long-term debt, net994993
Deferred income taxes, net245238
Income taxes payable3027
Lease and other long-term liabilities178163
Total liabilities2,1942,167
Stockholders' equity attributable to CoStar Group7,9328,334
Equity attributable to noncontrolling interest1337
Total equity7,9458,371
Total liabilities and stockholders' equity$10,139$10,538
See accompanying notes.

COSTAR GROUP, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY

(in millions)

(unaudited)

Common StockAdditional Paid-In CapitalTreasury StockAccumulated Other Comprehensive IncomeRetained EarningsStockholders’ Equity Attributable to CoStar GroupEquity Attributable to NCITotal Equity
SharesAmount
Balance at December 31, 2025417.9$4$6,410$(510)$80$2,350$8,334$37$8,371
Net income—————33—3
Other comprehensive income————51—51—51
Change in NCI———————11
Exercise of stock options0.9—8———8—8
Restricted stock grants vested0.1————————
Restricted stock grants surrendered(0.6)—(20)———(20)—(20)
ESPP and MSPP0.2—5———5—5
Stock-based compensation expense——41———41—41
Stock repurchases under stock repurchase programs(11.4)—(3)(506)——(509)—(509)
Balance at March 31, 2026407.1$4$6,441$(1,016)$131$2,353$7,913$38$7,951
Net income—————5555—55
Other comprehensive income————7—7—7
Purchase of noncontrolling interest in AOMs——(1)———(1)(25)(26)
Restricted stock grants vested0.1————————
Restricted stock grants surrendered(0.1)—(1)———(1)—(1)
ESPP and MSPP0.1—4———4—4
Stock-based compensation expense——38———38—38
Stock repurchases under stock repurchase programs(2.4)——(83)——(83)—(83)
Balance at June 30, 2026404.8$4$6,481$(1,099)$138$2,408$7,932$13$7,945

See accompanying notes.

COSTAR GROUP, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY

(in millions)

(unaudited)

Common StockAdditional Paid-In CapitalTreasury StockAccumulated Other Comprehensive Loss (Income)Retained EarningsStockholders’ Equity Attributable to CoStar GroupEquity Attributable to NCITotal Equity
SharesAmount
Balance at December 31, 2024409.5$4$5,232$—$(26)$2,343$7,553$—$7,553
Net loss—————(15)(15)—(15)
Other comprehensive income————9—9—9
Exercise of stock options0.1—1———1—1
Restricted stock grants2.3————————
Restricted stock grants surrendered(0.3)—(34)———(34)—(34)
ESPP and MSPP0.1—5———5—5
Stock-based compensation expense——30———30—30
Stock repurchases under stock repurchase programs(0.2)——(18)——(18)—(18)
Common stock issued for Matterport Acquisition11.7—1,025———1,025—1,025
Balance at March 31, 2025423.2$4$6,259$(18)$(17)$2,328$8,556$—$8,556
Net income—————66—6
Other comprehensive income————37—37—37
Exercise of stock options0.4—4———4—4
Restricted stock grants0.3————————
Restricted stock grants surrendered(0.1)—(12)———(12)—(12)
ESPP and MSPP0.1—4———4—4
Stock-based compensation expense——52———52—52
Stock repurchases under stock repurchase programs(0.6)——(46)——(46)—(46)
Balance at June 30, 2025423.3$4$6,307$(64)$20$2,334$8,601$—$8,601

See accompanying notes.

COSTAR GROUP, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(in millions)

(unaudited)

Six Months Ended June 30,
20262025
Operating activities:
Net income (loss)$58$(9)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization167113
Amortization of deferred commissions costs6067
Non-cash lease expense1516
Stock-based compensation expense8082
Deferred income taxes, net24(5)
Credit loss expense1717
Unrealized gains on investments and deal-contingent foreign currency forward contracts—(24)
Other operating activities, net3(2)
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable(34)(19)
Prepaid expenses, other current assets and other assets113
Deferred commissions(67)(80)
Accounts payable and other liabilities3054
Litigation accrual(109)—
Lease liabilities(8)(19)
Income taxes payable, net2(21)
Deferred revenue2817
Net cash provided by operating activities267200
Investing activities:
Proceeds from sale and settlement of investments and other assets2205
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 plan1814
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 period1,7334,681
Cash, cash equivalents, and restricted cash at the end of period$1,266$3,727
Supplemental cash flow disclosures:
Interest paid$24$15
Income taxes (refund) paid, net$(10)$56
Supplemental non-cash investing and financing activities:
Accrued capital expenditures and non-cash landlord incentives$119$84

See accompanying notes.

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited)

1. ORGANIZATION

CoStar Group (the "Company") is a leading global provider of online real estate marketplaces, information, analytics, and 3D digital twin technology in the property markets. The Company has created and compiled a standardized platform of real estate information, analytics, and online marketplaces where industry professionals, consumers of real estate, and the related business communities can continuously interact and facilitate transactions by efficiently accessing and exchanging accurate and standardized real estate-related information. The Company's service offerings span all property types, including office, residential, retail, industrial, multifamily, land, mixed-use, and hospitality. The Company's services are typically distributed to its customers under subscription-based agreements that generally renew automatically and have a minimum term of one year. The Company operates within two operating segments, which are Commercial Real Estate and Residential Real Estate.

The Company acquired Matterport and Domain in February 2025 and August 2025, respectively. See Note 4 for further discussion of these acquisitions.

2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation

The condensed consolidated financial statements include the accounts of CoStar Group, Inc., its wholly-owned subsidiaries, and entities in which the Company maintains a controlling financial interest. All intercompany balances and transactions have been eliminated in consolidation. Accounting policies are consistent for each operating segment.

Principles of Consolidation

The Company consolidates those entities that the Company controls through either majority ownership or voting rights and VIEs where it is the primary beneficiary. The Company is deemed the primary beneficiary of a VIE when it has both (a) the power to direct the activities of the VIE that most significantly impact its economic performance and (b) the obligation to absorb losses or the right to receive benefits that could potentially be significant to the VIE.

In determining whether the Company is the primary beneficiary, various factors are considered regarding the nature of its involvement with the VIE, including economic interests, voting rights, authority to appoint or remove directors, and ability to authorize key decisions. This analysis also requires assessment of the VIE’s design, including its capital structure, cash flows, and classes of shares.

As part of the Domain Acquisition, the Company obtained ownership interests in the AOMs, which are considered VIEs for which the Company is the primary beneficiary. Domain introduced the AOMs to incentivize real estate agents to increase their use of Domain's depth products by allowing agents to share in a portion of Domain's earnings in return for placing premium, higher-value advertisements on the Domain platform. Domain provides corporate services to the VIEs under services agreements. In addition, the Company has issued letters of support to the VIEs, committing to provide financial support in the event that the VIEs are unable to meet their liabilities independently.

In June 2026, the Company acquired all of the outstanding ownership interests in certain consolidated AOMs for approximately A$38 million ($26 million), which had a carrying value of A$37 million ($25 million). These transactions were accounted for as equity transactions, with no impact to the condensed consolidated statements of operations. The difference between the fair value of the consideration paid and the respective NCI balance was recognized as a reduction to additional paid-in capital.

See Note 4 for additional details regarding the Domain Acquisition.

Interim Financial Statements

The accompanying unaudited condensed consolidated financial statements of the Company have been prepared in accordance with GAAP for interim financial information. In the opinion of the Company’s management, the financial statements reflect all adjustments, consisting only of a normal recurring nature, necessary to present fairly the Company’s financial position at June 30, 2026 and December 31, 2025, the results of its operations for the three and six months ended

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited)

June 30, 2026 and 2025, its comprehensive income for the three and six months ended June 30, 2026 and 2025, its changes in stockholders' equity for the three and six months ended June 30, 2026 and 2025, and its cash flows for the six months ended June 30, 2026 and 2025.

Certain notes and other information have been condensed or omitted from the interim financial statements presented in this Report. Therefore, these financial statements should be read in conjunction with the Company’s 2025 Form 10-K.

Recast of Certain Prior Period Information

During the fourth quarter of 2025, the Company changed the composition of its segments from geography-based to product-portfolio-based. This change aligns with the internal reporting used by the CODM for assessing performance and allocating resources. Prior period segment disclosures have been recast to conform to the current presentation, except where it was impracticable to do so. These changes primarily impacted Notes 3 and 12.

The recast of prior period information did not affect the condensed consolidated balance sheets, condensed consolidated statements of operations, or other condensed consolidated financial statements.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. On an ongoing basis, the Company evaluates its estimates and assumptions, including those related to revenue recognition; determination of stand-alone selling prices of various performance obligations; allowance for credit losses; the useful lives and recoverability of long-lived and intangible assets; goodwill impairment assessment; income taxes; accounting for business combinations; stock-based compensation; the Company's incremental borrowing rate and the expected term for its leases; and contingencies, among others. The Company bases these estimates on historical and anticipated results, trends, and various other assumptions that it believes are reasonable, including assumptions as to future events. These estimates form the basis for making judgments about the carrying values of assets and liabilities and recorded revenue and expenses. Actual results could differ from these estimates.

Revenue Recognition

Revenue is recognized upon transfer of control of promised products or services to customers in an amount that reflects the consideration the Company expects to receive in exchange for those products or services. The Company's revenue contracts can include various combinations of products and services, which are generally capable of being distinct and accounted for as separate performance obligations. Revenue is recognized net of allowances for refunds and returns and any taxes collected from customers, which are subsequently remitted to governmental authorities.

Nature of Products and Services

The Company derives revenue primarily by providing subscription-based (i) advertising services on its online marketplaces for professional property management companies, property owners, real estate agents and brokers, and landlords and (ii) access to its proprietary database of real estate information, including benchmarking and analytics for the hospitality industry and analytics for lenders. Other subscription-based services include (i) real estate and lease management solutions to commercial customers and real estate investors and (ii) access to its AI-powered spatial data platform to create high-fidelity and high-accuracy digital twins of physical spaces.

Subscription contract rates are generally based on the number of sites, number of users, organization size, the customer’s business focus, geography, the number of properties reported on or analyzed, the number and types of services to which a customer subscribes, the number of properties a customer advertises, the number of digital twins hosted, the number of transactions and average transaction size a broker or agent has closed, and the prominence and placement of a customer's advertised properties in the search results. The Company’s subscription-based licenses, advertising packages, and membership agreements generally renew automatically, and the majority have a term of at least one year. Revenue from subscription-based contracts was approximately 89% and 95% of total revenue for the three months ended June 30, 2026 and 2025, respectively, and approximately 90% and 96% of total revenue for the six months ended June 30, 2026 and 2025, respectively.

The Company also derives revenue from transaction-based services, including: (i) providing premium listings for individual properties on its marketplaces, (ii) providing data capture services to create digital twins, (iii) the sale of Matterport cameras and capture equipment, (iv) Ten-X's auctions, and (v) ancillary products and services that are sold on an ad hoc basis.

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited)

The Company analyzes contracts to determine the appropriate revenue recognition using the following steps: (i) identification of contracts with customers, (ii) identification of distinct performance obligations in the contract, (iii) determination of contract transaction price, (iv) allocation of contract transaction price to the performance obligations, and (v) determination of revenue recognition based on timing of satisfaction of the performance obligations.

The Company recognizes revenue upon the satisfaction of its performance obligations (upon transfer of control of promised services to its customers) in an amount that reflects the consideration which it expects to be entitled to in exchange for those services. Revenue from subscription-based services is recognized on a straight-line basis over the term of the agreement. Revenue from premium listings sold on a transactional basis is recognized over the estimated period the advertisements will be active. Revenue from all other transaction-based services is recognized when the promised product or services are delivered, which are detailed in the following table:

Service or ProductPoint in time of transfer
Matterport capture serviceswhen the digital twin is available to be accessed
Matterport camerasas defined in the customer's contract and generally upon shipment
Ten-X Auctionsat the successful closing for the sale of the auctioned property
Ad hoc products or serviceswhen delivered to or available to be used by the customer

Revenue for sales of Matterport cameras is recorded net of estimates of returns, as buyers are entitled to return the camera within 30 days from the date of purchase for a full refund. These rights are accounted for as variable consideration and recognized as a reduction to the revenue recognized.

In limited circumstances, the Company's contracts with customers include promises to transfer multiple goods and services, such as contracts for its subscription-based services and professional services or product sales, digital twin capture services, and subscription-based hosting service. For these contracts, the Company accounts for individual performance obligations separately if they are distinct, which involves the determination of the standalone selling price for each distinct performance obligation.

Contract Balances and Other Receivables

Deferred revenue results from amounts billed in advance to customers or cash received from customers in advance of the Company's fulfillment of its performance obligations and is recognized as those obligations are satisfied.

Contract assets represent a conditional right to consideration for satisfied performance obligations that become a receivable when the conditions are satisfied. Contract assets are generated when contractual billing schedules differ from revenue recognition timing.

Assets Recognized from Costs to Obtain a Contract with a Customer

Certain sales commissions are considered incremental and recoverable costs of obtaining a contract with a customer. Sales commissions incurred for obtaining new contracts are deferred and then amortized as selling and marketing (excluding customer base amortization) expenses over the period of benefit that the Company has determined to be three years. The amortization period was determined based on several factors, including the nature of the technology and proprietary data underlying the services being purchased, customer contract renewal rates, and industry competition. Sales commissions that do not represent incremental costs of obtaining a contract, or that would otherwise be amortized over a period of one year or less, are not subject to capitalization and are recognized as incurred.

See Note 3 for further discussion of the Company's revenue recognition.

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited)

Cost of Revenue

Cost of revenue principally consists of salaries, benefits, bonuses, stock-based compensation expenses, and other indirect costs for the Company's researchers who collect and analyze the real estate data that is the basis for the Company's real estate information, analytics, and online marketplaces services and for employees who support these products. Additionally, cost of revenue includes amortization of acquired trade names, technology, and certain other intangible assets; product hosting costs; credit card and other transaction fees relating to processing customer transactions; cost of data from third-party data sources; costs of capture services; and costs of Matterport cameras sold.

Foreign Currency Translation

The Company’s reporting currency is the U.S. dollar. The functional currency for the majority of its operations is the local currency, with the exception of certain international locations for which the functional currency is the British Pound or U.S. dollar. Assets and liabilities denominated in a foreign currency are translated into U.S. dollars using the exchange rates in effect as of the balance sheet date. Gains and losses resulting from translation are included in accumulated other comprehensive income. Currency gains and losses on the translation of intercompany loans made to foreign subsidiaries that are of a long-term investment nature are also included in accumulated other comprehensive income. Gains and losses resulting from transactions denominated in a currency other than the functional currency of the entity are included in other income (expense), net in the condensed consolidated statements of operations using the average exchange rates in effect during the period. The Company recognized a net foreign currency loss of $1 million for the three months ended June 30, 2026 and a net foreign currency gain of $2 million for the three months ended June 30, 2025. The Company recognized a net foreign currency loss of $1 million for the six months ended June 30, 2026 and a net foreign currency gain of $7 million for the six months ended June 30, 2025.

Accumulated Other Comprehensive Income

The components of accumulated other comprehensive income were as follows (in millions):

June 30, 2026December 31, 2025
Foreign currency translation income$138$80
Total accumulated other comprehensive income$138$80

For the six months ended June 30, 2026 and 2025, there were no amounts reclassified out of accumulated other comprehensive income to the condensed consolidated statements of operations.

Income Taxes

Deferred income taxes result from temporary differences between the tax basis of assets and liabilities and the basis reported in the Company’s condensed consolidated financial statements. Deferred tax liabilities and assets are determined based on the difference between the financial statement and the tax basis of assets and liabilities using enacted rates in effect during the year in which the Company expects differences to reverse. Valuation allowances are provided against assets, including net operating losses, if the Company determines it is more likely than not that some portion or all of an asset may not be realized. Interest and penalties related to income tax matters are recognized in income tax expense.

The Company has elected to record the GILTI under the current-period cost method.

On July 4, 2025, new federal tax legislation, H.R.1, was enacted. The legislation amends U.S. tax law, including provisions related to domestic research and development expenses, the restoration of EBITDA-based interest deduction limitation, and bonus depreciation, among others, and international tax provisions, including eliminating the net deemed tangible income return, decreasing the tax rates and taxable income computations applicable to GILTI and FDII, and permanently increasing the BEAT rate. For the three and six months ended June 30, 2026, the Company has assessed the impact of the legislation on its condensed consolidated financial statements and has included the impact of items affecting its forecasted tax rate as part of its income tax expense computed.

See Note 10 for further discussion of the Company's accounting for income taxes.

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited)

Earnings Per Share

Earnings per share is computed by dividing net income (loss) by the weighted-average number of common shares outstanding during the period on a basic and diluted basis.

The following table sets forth the calculation of basic and diluted earnings per share (in millions, except per share data):

Three Months Ended June 30,Six Months Ended June 30,
Numerator:2026202520262025
Net income (loss)$55$6$58$(9)
Denominator:
Denominator for basic earnings per share — weighted-average outstanding shares404.1419.6408.5415.1
Effect of dilutive securities:
Stock options, RSAs, and RSUs0.34.70.6—
Denominator for diluted earnings per share — weighted-average outstanding shares404.4424.3409.1415.1
Earnings per share - basic$0.14$0.01$0.14$(0.02)
Earnings per share - diluted$0.14$0.01$0.14$(0.02)

The Company’s potentially dilutive securities include outstanding stock options and unvested stock-based awards, which include RSAs, RSUs, and Matching RSUs awarded under the MSPP. Shares underlying unvested RSAs and RSUs that vest based on a performance condition and a market condition that have not been achieved as of the end of the period are not included in the computation of basic or diluted earnings per share. Diluted earnings per share considers the impact of potentially dilutive securities except when the inclusion of the potentially dilutive securities would have an anti-dilutive effect.

The following table summarizes the shares underlying the unvested performance-based RSAs and RSUs and anti-dilutive securities excluded from the basic and diluted earnings per share calculations (in millions):

Three Months Ended June 30,Six Months Ended June 30,
2026202520262025
Performance-based RSAs and RSUs1.71.41.71.4
Anti-dilutive securities6.02.35.02.2

Stock-Based Compensation

Equity instruments issued in exchange for services performed by officers, employees, and directors of the Company are accounted for using a fair value-based method and the fair value of such equity instruments is recognized as expense in the condensed consolidated statements of operations.

For stock-based awards that vest over a specific service period, compensation expense is measured based on the fair value of the awards at the grant date and is recognized on a straight-line basis over the service period of the awards, net of an estimated forfeiture rate. For equity instruments that vest based on achievement of both a performance and a market condition, stock-based compensation expense is recognized over the service period of the awards based on the expected achievement of the related performance conditions at the end of each reporting period. If the Company's initial estimates of the achievement of the performance conditions change, the related stock-based compensation expense may fluctuate from period to period based on those estimates. If the performance conditions are not met, no stock-based compensation expense will be recognized and any previously recognized stock-based compensation expense will be reversed. For awards with both a performance and a market condition, the Company estimates the fair value of each equity instrument granted on the date of grant using a Monte-Carlo simulation model. This pricing model uses multiple simulations to evaluate the probability of achieving the market condition to

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited)

calculate the fair value of the awards which includes the recent market price and volatility of the Company's shares. When determining the grant date fair value of all stock-based awards, the Company considers whether it is in possession of any material, non-public information that upon its release would have a material effect on its share price, and if so, whether the observable share price or expected volatility assumptions used in determining the fair value of the awards should be adjusted.

Stock-based compensation expense for stock options, RSAs, and RSUs issued under equity incentive plans, stock purchases under the ESPP, and DSUs and Matching RSUs awarded under the MSPP included in the Company’s condensed consolidated statements of operations were as follows (in millions):

Three Months Ended June 30,Six Months Ended June 30,
2026202520262025
Cost of revenue$7$6$13$10
Selling and marketing (excluding customer base amortization)591013
Software development9122220
General and administrative17253539
Total stock-based compensation expense$38$52$80$82

Loss Contingencies and Litigation Expense

The Company is subject to the possibility of losses from various contingencies, including certain legal proceedings. Significant judgment is necessary to estimate the probability and amount of a loss, if any, from such contingencies. An accrual is made when it is probable that a liability has been incurred or an asset has been impaired, and the amount of loss can be reasonably estimated. In accounting for the resolution of contingencies, significant judgment may be necessary to estimate amounts pertaining to periods prior to the resolution that are charged to operations in the period of resolution and amounts related to future periods. If only a range of estimated losses can be determined, the Company records an amount within the range that, in its judgment, reflects the most likely outcome; if none of the estimates within that range are a better estimate than any other amount, the Company records the low end of the range. Any such accrual would be charged to expense in the appropriate period.

Deal-Contingent Foreign Currency Forward Contracts

On May 9, 2025, the Company entered into deal-contingent foreign currency forward contracts to manage the risk of appreciation of the Australian dollar-denominated purchase price related to the Domain Acquisition. Deal-contingent foreign currency forward contracts had an aggregate notional amount of A$2.4 billion ($1.5 billion). These derivative instruments were entered into as economic hedges and do not qualify for hedge accounting. The change in fair value of the deal-contingent forward contracts was $13 million for the three and six months ended June 30, 2025 and was recognized in other income (expense), net in the condensed consolidated statements of operations. See Note 4 for further discussion regarding the Company's acquisitions.

Cash, Cash Equivalents, and Restricted Cash

The Company considers all highly liquid investments with an original maturity of three months or less when purchased to be cash equivalents. Restricted cash consisted of cash deposited as collateral related to a litigation bond in a third-party insured account, which was liquidated in June 2026 with the resolution of the Brown Judgment. See Note 11 for further discussion regarding the Company's litigation.

Cash, cash equivalents, and restricted cash are included in the following line items in the condensed consolidated balance sheets and condensed consolidated statements of cash flows (in millions):

June 30, 2026December 31, 2025
Cash and cash equivalents$1,266$1,633
Restricted cash—100
Total cash, cash equivalents, and restricted cash$1,266$1,733

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited)

Allowance for Credit Losses

The Company maintains an allowance for credit losses to cover its current expected credit losses on its trade receivables and contract assets arising from the failure of customers to make contractual payments. The Company estimates credit losses expected over the life of its trade receivables and contract assets based on historical information combined with current conditions that may affect a customer’s ability to pay. While the Company uses various credit quality metrics, it primarily monitors collectability by reviewing the duration of collection pursuits on its delinquent trade receivables and historical write-off trends. Based on the Company’s experience, the customer's delinquency status is the strongest indicator of the credit quality of the underlying trade receivables. The Company’s policy is to write-off trade receivables when they are deemed uncollectible.

The following table details the activity related to the allowance for credit losses for trade receivables (in millions):

Six Months Ended June 30,
20262025
Beginning balance$29$23
Current-period provision for expected credit losses1717
Write-offs charged against the allowance(10)(13)
Ending balance$36$27

Inventories

Inventories consist primarily of finished goods, assemblies, and raw materials. Assemblies are generally purchased from contract manufacturers. Inventories are valued at the lower of cost or net realizable value. Costs are determined using standard cost, which approximates actual cost on a first-in, first-out basis. The Company assesses the valuation of inventory and periodically adjusts the value for estimated excess and obsolete inventory based upon estimates of future demand and market conditions, as well as damaged or otherwise impaired goods.

Inventories of Matterport cameras and accessories consisted of the following (in millions):

June 30, 2026December 31, 2025
Finished goods$12$4
Purchased parts and raw materials82
Total inventories$20$6

Leases

The determination of whether an arrangement contains a lease and the classification of a lease, if applicable, is made at the commencement of the arrangement, at which time the Company also measures and recognizes a ROU asset, representing the Company’s right to use the underlying asset, and a lease liability, representing the Company’s obligation to make lease payments under the terms of the arrangement. For the purposes of recognizing ROU assets and lease liabilities associated with the Company’s leases, the Company has elected the practical expedient to not recognize a ROU asset or lease liability for short-term leases, which are leases with a term of one year or less. The lease term is defined as the noncancelable portion of the lease term, plus any periods covered by an option to extend the lease if it is reasonably certain that the option will be exercised.

In determining the amount of lease payments used in measuring ROU assets and lease liabilities, the Company has elected the practical expedient not to separate non-lease components from lease components for all classes of underlying assets. Consideration deemed part of the lease payments used to measure ROU assets and lease liabilities generally includes fixed payments and variable payments based on either an index or a rate, offset by lease incentives. Upon commencement, the initial ROU asset also includes any lease prepayments. ROU assets and liabilities are recognized at the lease commencement date based on the present value of lease payments over the lease term. The rates implicit within the Company's leases are generally not determinable. Therefore, the Company's incremental borrowing rate is used to determine the present value of lease

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited)

payments. The determination of the Company’s incremental borrowing rate requires judgment and is determined at lease commencement and is subsequently reassessed upon a modification to the lease arrangement.

Lease costs related to the Company's operating leases are generally recognized as a single ratable lease cost over the lease term.

See Note 6 for further discussion of the Company’s accounting for leases.

Property and Equipment, Net

Property and equipment, net are stated at cost, net of accumulated depreciation and amortization. All repairs and maintenance costs are expensed as incurred. Construction in progress includes expenditures for construction and improvements to the Company's campuses and are stated at cost. Depreciation and amortization are calculated on a straight-line basis over the estimated useful lives of the assets. The Company capitalizes interest costs during the construction phase. Capitalized interest is included in the cost of the underlying asset and amortized over the estimated useful life of the asset.

Construction of the Richmond, Virginia campus was substantially completed and the building was operational in June 2026 in advance of the grand opening in July 2026. During the three months ended June 30, 2026, construction in progress was placed into service as shown below (in millions):

Estimated Useful Life (in years)Amount
Buildings39$649
Building improvements15159
Furniture and office equipment5-1033
Total$841

The total cost of the assets placed in service includes $31 million of interest capitalized over the course of construction.

Long-Lived Assets, Intangible Assets, and Goodwill

Long-lived assets, such as property and equipment and purchased intangibles subject to depreciation or amortization, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to the estimated undiscounted future cash flows expected to be generated by the asset or asset group. If the carrying amount of an asset exceeds its estimated undiscounted future cash flows, an impairment charge is recognized in the amount by which the carrying amount of the asset exceeds the fair value of the asset.

Acquired technology and data, customer base assets, trade names, and other intangible assets are related to the Company’s acquisitions. The Company removes fully amortized intangible assets from the cost and accumulated amortization amounts disclosed.

Goodwill is tested for impairment at least annually, on October 1, or more frequently if an event or other circumstance indicates that the fair value of a reporting unit may be below its carrying amount. The Company may first assess qualitative factors to evaluate whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount or elect to bypass the qualitative assessment. If it is determined that it is more likely than not that the fair value of a reporting unit is less than its carrying value, or the Company elects to bypass the qualitative assessment, the Company then performs a quantitative assessment by determining the fair value of each reporting unit. The estimate of the fair value of each reporting unit is based on a projected discounted cash flow model that includes significant assumptions and estimates, including the discount rate, growth rate, and future financial performance. Assumptions about the discount rate are based on a weighted-average cost of capital for comparable companies. Assumptions about the growth rate and future financial performance of a reporting unit are based on the Company’s forecasts, business plans, economic projections, and anticipated future cash flows. The fair value of each reporting unit is compared to the carrying amount of the reporting unit. If the carrying value of the reporting unit exceeds the fair value, then an impairment loss is recognized for the difference.

See Notes 4, 7, and 8 for further discussion of the Company's acquisitions, goodwill, and intangible assets, respectively.

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited)

Leasing Operations and Other Income (Expense), Net

In February 2024, the Company closed on the purchase of an office tower and the land on which it rests in Arlington, Virginia. In January 2025, the Company relocated its headquarters from Washington, D.C. to Arlington, VA, initially occupying approximately 30% of the building. The Company continues to build out further space in this building to support anticipated growth and expansion of its operations in the coming years. Maintenance, physical facilities, leasing, property management, and other key responsibilities related to property ownership are outsourced to professional real-estate managers. The office tower measures approximately 550,000 rentable square feet.

The Company records the third-party rental activity from this building's operations and leases, including building depreciation and operating expenses for space occupied by tenants, as other income (expense), net in the condensed consolidated statements of operations.

Deferred lease income as of June 30, 2026 and December 31, 2025 was as follows (in millions):

BalanceBalance Sheet CaptionJune 30, 2026December 31, 2025
Current portionOther current liabilities$6$6
Non-current portionLease and other long-term liabilities3235
Total deferred lease income$38$41

Lease income includes base rent each tenant pays in accordance with the terms of its respective lease and is reported on a straight-line basis over the non-cancellable term of the lease, which includes the effects of periodic step-ups in rent and rent abatements under the lease. When a renewal option is included within the lease, the Company assesses whether the option is reasonably certain of being exercised against relevant economic factors to determine whether the option period should be included as part of the lease term. Further, lease income includes tenant reimbursement amounts for the recovery of the operating expenses and real estate taxes. Tenant reimbursements, which vary each period, are non-lease components that are not the predominant activity within the contract. The Company has elected the practical expedient that allows it to combine certain lease and non-lease components of operating leases. Non-lease components are recognized together with fixed base rent in “lease income” as variable lease income in the same period as the related expenses are incurred. For the three and six months ended June 30, 2026 and 2025, variable lease income was not material. Components of other income (expense), net related to leasing operations for the three and six months ended June 30, 2026 and 2025 were as follows (in millions):

Three Months Ended June 30,Six Months Ended June 30,
2026202520262025
Lease income(1)$3$5$7$9
Less:
Property operating expenses1223
Depreciation and amortization expense28511
Other expense from leasing operations$—$(5)$—$(5)
__________________________
(1) Includes $1 million of amortization expense of above-market leases for both the three months ended June 30, 2026 and 2025, and $3 million and $2 million for the six months ended June 30, 2026 and 2025, respectively.

Building depreciation and operating expenses for space occupied by the Company are allocated among cost of revenue, selling and marketing (excluding customer base amortization), software development, and general and administrative expenses in the condensed consolidated statements of operations based on the headcount of the respective departments occupying the building. As of June 30, 2026, the Company occupied approximately 60% of the property with the remainder leased or available to be leased to third parties.

Debt Issuance Costs

Costs incurred in connection with the issuance of long-term debt are deferred and amortized as interest expense over the term of the related debt using the effective interest method for term debt and on a straight-line basis for revolving debt. The Company made a policy election to classify deferred issuance costs on the revolving credit facility as a long-term asset on its

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited)

condensed consolidated balance sheets. Upon a refinancing or amendment, previously capitalized debt issuance costs are expensed and included in loss on extinguishment of debt if the Company determines that there has been a substantial modification of the related debt. If the Company determines that there has not been a substantial modification of the related debt, any previously capitalized debt issuance costs are amortized as interest expense over the term of the new debt instrument.

See Note 9 for further discussion of the Company's accounting for its outstanding debt, revolving credit facility, and related issuance costs.

Business Combinations

The Company includes the results of operations of the businesses that it acquires from the date of acquisition. The Company generally allocates the purchase consideration to the tangible assets acquired and liabilities assumed and intangible assets acquired based on their estimated fair values on the date of the acquisition. The purchase price is generally determined based on the fair value of the assets transferred, liabilities assumed, and equity interests issued, after considering any transactions that are separate from the business combination. The excess of the fair value of purchase consideration, the fair value of any NCI in the acquiree, and the fair value of any previous equity interest in the acquiree over the fair values of these identifiable assets and liabilities is recorded as goodwill. In a business combination achieved in stages, the Company shall remeasure its previously held equity interest in the acquiree at its acquisition-date fair value and recognize the resulting gain or loss, if any, in results of operations. The Company applies significant assumptions, estimates, and judgments in determining the fair value of assets acquired and liabilities assumed on the acquisition date, especially with respect to intangible assets and contingent liabilities. Significant estimates in valuing certain intangible assets include, but are not limited to, future expected cash flows from acquired customer bases, acquired technology, acquired trade names, useful lives, royalty rates, and discount rates. Estimates of fair value are based on assumptions believed to be reasonable, but which are inherently uncertain and unpredictable and, as a result, actual results may differ from estimates. Any adjustments to provisional amounts that are identified during the measurement period, not to exceed one year from the date of acquisition, are recorded in the reporting period in which the adjustment amounts are determined. Upon the conclusion of the measurement period, any subsequent adjustments are recorded to earnings.

The Company has elected the practical expedient provided under ASC 805, Business Combinations, which allows for contract assets and liabilities acquired or assumed in an acquisition to be measured in accordance with the accounting framework for revenue from contracts with customers as if the Company had originated the acquired contract. This is an exception to the general requirement to measure assets acquired and liabilities assumed at their fair value on the acquisition date.

For a given acquisition, the Company may identify certain pre-acquisition contingencies as of the acquisition date and may extend its review and evaluation of these pre-acquisition contingencies throughout the measurement period in order to obtain sufficient information to assess whether the Company includes these contingencies as part of the fair value estimates of assets acquired and liabilities assumed and, if so, to determine their estimated amounts.

If the Company cannot reasonably determine the fair value of a pre-acquisition contingency (non-income tax-related) by the end of the measurement period, which is generally the case given the nature of such matters, the Company will recognize an asset or a liability for such pre-acquisition contingency if: (i) it is probable that an asset existed or a liability had been assumed at the acquisition date and (ii) the amount of the asset or liability can be reasonably estimated. Subsequent to the measurement period, changes in the Company's estimates of such contingencies will affect earnings and could have a material effect on its results of operations and financial position.

In addition, uncertain tax positions and tax-related valuation allowances assumed in connection with a business combination are initially estimated as of the acquisition date. The Company reevaluates these items based upon facts and circumstances that existed as of the acquisition date with any adjustments to its preliminary estimates being recorded to goodwill, provided that the Company is within the measurement period. Subsequent to the measurement period, changes to these uncertain tax positions and tax-related valuation allowances will affect the Company's provision for income taxes in its condensed consolidated statements of operations and comprehensive income and could have a material impact on its results of operations and financial position.

Transaction costs associated with business combinations are expensed as incurred and are included in general and administrative expenses in the condensed consolidated statements of operations.

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited)

Recent Accounting Pronouncements

Recently Adopted Accounting Pronouncements

The Company adopted ASU No. 2025-05, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets effective January 1, 2026. This ASU provides a practical expedient for estimating expected credit losses on current accounts receivable and current contract assets arising from transactions accounted for under ASC 606. Under the expedient, entities may assume that current conditions as of the balance sheet date do not change for the remaining life of the asset when developing reasonable and supportable forecasts as part of estimating expected credit losses. The Company adopted the ASU effective January 1, 2026 on a prospective basis and elected the practical expedient for the calculation of current expected credit losses. The adoption did not result in a material impact on the Company's condensed consolidated financial statements and related disclosures.

Recent Accounting Pronouncements Not Yet Adopted

In November 2024, the FASB issued ASU No. 2024-03, Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses. The ASU requires incremental disclosures about specific expense categories, including but not limited to, purchases of inventory, employee compensation, depreciation, amortization, and selling expenses. The amendments are effective for fiscal years beginning after December 15, 2026 and for interim periods within fiscal years beginning after December 15, 2027. Early adoption is permitted and the amendments may be applied either prospectively or retrospectively. Management is currently evaluating this ASU to determine its impact on the Company's disclosures.

In May 2025, the FASB issued ASU No. 2025-03, Business Combinations (Topic 805) and Consolidation (Topic 810): Determining the Accounting Acquirer in the Acquisition of a Variable Interest Entity. The ASU revises current guidance for determining the accounting acquirer for a transaction effected primarily by exchanging equity interests in which the legal acquiree is a VIE that meets the definition of a business. The amendments differ from current GAAP because, for certain transactions, they replace the requirement that the primary beneficiary of a VIE is always the acquirer with an assessment that requires an entity to consider the factors to determine which entity is the accounting acquirer. Under the amendments, acquisition transactions in which the legal acquiree is a VIE will, in more instances, result in the same accounting outcomes as economically similar transactions in which the legal acquiree is a voting interest entity. The ASU does not change the accounting for a transaction determined to be a reverse acquisition or a transaction in which the legal acquirer is not a business and is determined to be the accounting acquiree. The new guidance will become effective for interim and annual reporting periods beginning on January 1, 2027, will require a prospective transition method for business combinations that occur after the initial adoption date, and early adoption is permitted. Management is currently evaluating this ASU to determine its impact on the Company's disclosures.

In September 2025, the FASB issued ASU No. 2025-06, Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software. The ASU eliminates all references to prescriptive and sequential software project stages throughout Subtopic 350-40. An entity is required to begin capitalizing software costs when both of the following occur: (1) management has authorized and committed to funding the software project and (2) it is probable that the project will be completed and the software will be used to perform the function intended (referred to as the “probable-to-complete recognition threshold”). The ASU is effective for annual reporting periods beginning after December 15, 2027 and interim reporting periods within those annual reporting periods. Entities may adopt the new guidance using a prospective transition approach, a modified transition approach that is based on the status of the project and whether software costs were capitalized before the date of adoption, or a retrospective transition approach. Early adoption is permitted as of the beginning of an annual reporting period. The Company is currently evaluating the impact this ASU will have on its consolidated financial statements and related disclosures.

In December 2025, the FASB issued ASU No. 2025‑12, Codification Improvements. The ASU provides technical corrections and clarifications to various topics, including diluted earnings per share, the transfer of receivables from contracts with customers, among other improvements. The ASU is effective for annual reporting periods beginning after December 15, 2026, and interim reporting periods within those annual periods. Early adoption is permitted in an interim or annual period in which financial statements have not yet been issued or made available for issuance. The Company is currently evaluating the impact this ASU will have on its consolidated financial statements and related disclosures.

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited)

3. REVENUE FROM CONTRACTS WITH CUSTOMERS

Disaggregated Revenue

Revenue by operating segment and type of service consists of the following (in millions):

Three Months Ended June 30,Six Months Ended June 30,
2026202520262025
Commercial Real Estate
CoStar$337$310$668$615
LoopNet8776172149
Other Commercial Real Estate576011391
Total Commercial Real Estate481446953855
Residential Real Estate444335869658
Total revenue$925$781$1,822$1,513

The Company has recast certain prior period disclosures to align with the way it internally manages the business. See Note 2 for additional information.

The Company is domiciled in the U.S. Revenue earned outside the U.S. was $150 million and $61 million for the three months ended June 30, 2026 and 2025, respectively, and $287 million and $109 million for the six months ended June 30, 2026 and 2025, respectively.

Deferred Revenue

Deferred revenue as of June 30, 2026 and December 31, 2025 was as follows (in millions):

BalanceBalance Sheet CaptionJune 30, 2026December 31, 2025
Current portionDeferred revenue$233$205
Non-current portionLease and other long-term liabilities11
Total deferred revenue$234$206

Changes in deferred revenue for the period were as follows (in millions):

Balance at December 31, 2025$206
Revenue recognized in the current period from the amounts in the beginning balance(150)
New deferrals, net of amounts recognized in the current period178
Balance at June 30, 2026$234

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited)

Contract Assets

Contract assets are generated when contractual billing schedules differ from revenue recognition timing and represent a conditional right to consideration for satisfied performance obligations that becomes a receivable when the conditions are satisfied. Contract assets as of June 30, 2026 and December 31, 2025 were as follows (in millions):

BalanceBalance Sheet CaptionJune 30, 2026December 31, 2025
Current portionPrepaid expenses and other current assets$5$7
Non-current portionDeposits and other assets33
Total contract assets$8$10

Unsatisfied Performance Obligations

Remaining contract consideration for which revenue had not been recognized due to unsatisfied performance obligations was approximately $599 million at June 30, 2026, which the Company expects to recognize over the next five years. This amount does not include contract consideration for contracts with a duration of one year or less.

Commissions

Commissions expense is included in selling and marketing (excluding customer base amortization) expense in the Company's condensed consolidated statements of operations. Commissions expense activity for the three and six months ended June 30, 2026 and 2025 was as follows (in millions):

Three Months Ended June 30,Six Months Ended June 30,
2026202520262025
Commissions incurred$51$63$103$109
Commissions capitalized in the current period(33)(46)(67)(78)
Amortization of deferred commissions costs30366067
Total commissions expense$48$53$96$98

For the six months ended June 30, 2026 and 2025, the Company did not recognize any impairment losses on commissions.

4. ACQUISITIONS

Zonda

In May, 2026, the Company entered into the Zonda Agreement, pursuant to which the Company agreed to acquire all of the outstanding equity interests in Zonda for $800 million in cash, subject to customary working capital and other post-closing adjustments. Zonda owns a proprietary, lot-level database covering new home communities, land development activity, construction status, home sales, and builder operations. This data and the software built around it are embedded in builder workflows and are used to support underwriting, land strategy, capital allocation, development planning, forecasting, and sales operations across the industry. Zonda also operates NewHomeSource and Livabl, leading online new home marketplaces in the U.S. and Canada respectively. The Zonda Agreement is subject to customary closing conditions and regulatory review. The Company currently expects to close the acquisition in the second half of 2026.

Domain

In February 2025, in connection with the Domain Proposal, the Company acquired approximately 17% of the ordinary shares of Domain, one of Australia's leading property marketplaces, at A$4.20 per share for a total purchase price of A$452 million ($285 million). In May 2025, the Company entered into an agreement to acquire the remaining issued capital of Domain not previously held by CoStar Group by way of scheme of arrangement. In August 2025, the Company completed the Domain Acquisition pursuant to which (i) the Company spent A$2.5 billion ($1.6 billion) to acquire the remaining 83% of Domain's ordinary shares; and (ii) Domain shareholders received total cash consideration of A$4.43 per Domain ordinary share,

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited)

less a one-time special dividend of A$0.088 per share declared and paid by Domain prior to closing. The Domain Acquisition positions the Company to leverage Domain's portfolio of property brands in Australia and CoStar's technology, scale, and innovation to improve customer experience, value, and access to CoStar's brands and product offerings.

As of the closing of the Domain Acquisition, the fair value of the Company's 17% investment was approximately A$465 million ($300 million), measured based on the fair value implied by the consideration transferred. The acquisition was completed as a step-acquisition.

The total purchase consideration for the Domain Acquisition was $1.6 billion, which consisted of the following (in millions):

Amount
Cash$1,472
Settlement of existing debt139
Fair value of cash settled equity awards related to pre-combination services1
Total purchase consideration1,612
Fair value of previously held equity interests300
$1,912

The following table summarizes the amounts recorded for acquired assets and assumed liabilities recorded at their fair value as of the closing date of the Domain Acquisition (in millions):

Updated Preliminary: August 27, 2025
Cash and cash equivalents$15
Accounts receivable35
Intangible assets931
Accrued expenses(27)
Deferred revenue(14)
Deferred tax liability(231)
Other assets and (liabilities), net(2)
Fair value of identifiable net assets acquired707
Fair value of NCI in Domain’s partially-owned subsidiaries(39)
Goodwill1,244
$1,912

Generally, the net assets of Domain were recorded at their estimated fair values upon initial consolidation. In valuing the acquired assets, assumed liabilities and NCI, fair value estimates were based primarily on future expected cash flows, market rate assumptions for contractual obligations, and appropriate discount rates. The key assumptions used in the valuation include discount rates, royalty rates, projected revenue growth rates, customer attrition rates, and profit margins.

The purchase price allocation is preliminary and subject to change during the measurement period as additional information is obtained about the facts and circumstances that existed at closing. Any material adjustments to provisional amounts identified during the measurement period will be recognized and disclosed in the reporting period in which the adjustment amounts are determined. The primary areas that remain subject to additional information include certain tax matters and contingencies.

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited)

The following table summarizes the fair values (in millions) of the identifiable intangible assets acquired in the Domain Acquisition, their related estimated useful lives (in years), and their respective amortization methods:

Estimated Fair ValueEstimated Useful LifeAmortization Method
Customer relationships$62520Accelerated
Brand and trade names1905-15Straight-line
Software1162-5Straight-line
Total intangible assets$931

Goodwill is calculated as the excess of the consideration transferred over the net assets recognized and represents the future economic benefits arising from other assets acquired that could not be individually identified and separately recognized. Specifically, the goodwill recorded as part of the Domain Acquisition includes, but is not limited to: (i) the expected synergies and other benefits that the Company believes will result from combining Domain's operations with the Company's operations and (ii) any intangible assets that do not qualify for separate recognition, such as the assembled workforce. Of the $1.2 billion of goodwill recorded as part of the Domain Acquisition, $994 million was allocated to the Residential Real Estate segment and $250 million to the Commercial Real Estate segment, of which none is expected to be deductible for income tax purposes. Transaction costs associated with the Domain Acquisition were $20 million for the year ended December 31, 2025 and consisted primarily of advisory, legal, accounting, and other professional service costs.

Matterport

On February 28, 2025, the Company completed the Matterport Acquisition. Matterport is a leader in the digitization and datafication of the built world. Matterport’s pioneering technology has set the standard for digitizing, accessing, and managing buildings, spaces, and places online. Matterport’s platform, composed of innovative software, spatial data-driven data science, and 3D capture technology, has broken down the barriers that have kept the largest asset class in the world, buildings and physical spaces, offline and underutilized for so long. The Company is integrating Matterport's 3D digital twin technology with its information service products and online marketplaces to allow buyers, sellers, and renters to explore properties with greater depth and insight.

Pursuant to the terms and conditions of the Matterport Merger Agreement, the Company acquired Matterport, with each share of Matterport Common Stock outstanding immediately prior to the closing of the Matterport Acquisition exchanged for (i) 0.03552 of a CoStar Group Share, the Matterport Merger Exchange Ratio, and (ii) $2.75 in cash, with fractional shares of CoStar Group Shares paid in cash.

As part of the Matterport Acquisition, the Company issued certain rollover equity awards to the employees of Matterport, which included approximately 2.3 million shares of restricted stock units and approximately 1.8 million stock option awards. The total fair value of the rollover equity awards was $273 million, of which the portion attributable to services performed prior to the acquisition date was allocated to purchase consideration. The remaining fair value was allocated to future services and will be expensed over the remaining service periods as stock-based compensation.

The total purchase consideration for the Matterport Acquisition was $1.9 billion, which consisted of the following (in millions):

Amount
Cash$902
CoStar Group Shares (11.7 million shares)881
Fair value of rollover awards144
Total$1,927

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited)

The following table summarizes the amounts recorded for acquired assets and assumed liabilities recorded at their fair value as of the closing date of the Matterport Acquisition (in millions):

Final: February 28, 2025
Cash and cash equivalents$55
Restricted cash97
Accounts receivable13
Available for sale investments204
Deferred tax assets, net of valuation allowance69
Goodwill1,105
Intangible assets527
Deferred revenue(32)
Litigation accrual(99)
Other assets and (liabilities), net(12)
Fair value of identifiable net assets acquired$1,927

Generally, the net assets of Matterport were recorded at their estimated fair values. In valuing the acquired assets and assumed liabilities, fair value estimates were based primarily on future expected cash flows, market rate assumptions for contractual obligations, and appropriate discount rates. The key assumptions used in the valuation include discount rates, royalty rates, projected revenue growth rates, customer attrition rates, and profit margins.

The following table summarizes the fair values (in millions) of the identifiable intangible assets acquired in the Matterport Acquisition, their related estimated useful lives (in years), and their respective amortization methods:

Estimated Fair ValueEstimated Useful LifeAmortization Method
Developed technology$2959Straight-line
Customer relationships1405Accelerated
Trade names9215Straight-line
Total intangible assets$527

Goodwill is calculated as the excess of the consideration transferred over the net assets recognized and represents the future economic benefits arising from other assets acquired that could not be individually identified and separately recognized. Specifically, the goodwill recorded as part of the Matterport Acquisition includes, but is not limited to: (i) the expected synergies and other benefits that the Company believes will result from combining Matterport's operations with the Company's operations and (ii) any intangible assets that do not qualify for separate recognition, such as the assembled workforce. The $1.1 billion of goodwill recorded as part of the Matterport Acquisition was associated with the Company's North America operating segment prior to the reallocation described in Note 2, of which none is expected to be deductible for income tax purposes. Transaction costs associated with Matterport Acquisition were $18 million during the six months ended June 30, 2025, and consist primarily of legal, accounting, and other professional service costs.

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited)

Pro Forma Financial Information (unaudited)

The unaudited pro forma financial information presented below reflects the condensed consolidated results of operations of the Company assuming both the Domain Acquisition and Matterport Acquisition had taken place on January 1, 2024. The unaudited pro forma financial information, as presented below, is for informational purposes only and is not necessarily indicative of the results of operations that would have been achieved if the acquisitions had not taken place on the dates listed above.

The unaudited pro forma financial information, in the aggregate, was as follows (in millions):

Three Months Ended June 30, 2025Six Months Ended June 30, 2025
Revenue$854$1,675
Net income (loss)$20$(52)

The material pro forma adjustments primarily consist of incremental amortization expense based on the preliminary fair value of the intangible assets acquired, increased compensation expense relating to the issuance of certain equity plans in connection with the acquisitions, accounting policy alignment adjustments, and the income tax impact of the aforementioned pro forma adjustments. The impact of the Matterport Acquisition on the Company's revenue was $44 million and $60 million for the three and six months ended June 30, 2025, respectively. The impact of the Matterport Acquisition on the Company's net income (loss) in the condensed consolidated statements of operations was a loss of $38 million and $51 million for the three and six months ended June 30, 2025, respectively.

5. INVESTMENTS AND FAIR VALUE MEASUREMENTS

The Company categorizes assets and liabilities recorded or disclosed at fair value on the condensed consolidated balance sheets based upon the level of judgment associated with inputs used to measure their fair value. The categories are as follows:

Level 1 - Observable inputs such as quoted prices in active markets for identical assets or liabilities.

Level 2 - Inputs other than quoted prices in active markets that are either directly or indirectly observable.

Level 3 - Unobservable inputs for which little or no market data exists, therefore requiring an entity to develop its own assumptions.

The Company's financial assets comprised Level 1 cash equivalents with original maturities of three months or less in the amount of $1.1 billion and $1.4 billion as of June 30, 2026 and December 31, 2025, respectively. As of June 30, 2026 and December 31, 2025, the Company had no Level 2 or Level 3 financial assets measured at fair value.

Available-for-Sale Debt Securities

In connection with the Matterport Acquisition, the Company acquired $204 million of available-for-sale debt securities, inclusive of $2 million of accrued interest. These securities were sold for net proceeds of $203 million, resulting in a negligible realized loss in the three months ended June 30, 2025.

Other Financial Instruments

The Company holds other financial instruments, including cash deposits, accounts receivable, accounts payable, accrued expenses, and Senior Notes. The carrying value for such financial instruments, other than the Senior Notes, each approximated their fair values as of both June 30, 2026 and December 31, 2025. The estimated fair value of the Company's outstanding Senior Notes using quoted prices from the over-the-counter markets, which are considered Level 2 inputs, was $900 million as of both June 30, 2026 and December 31, 2025.

6. LEASES

The Company has operating and finance leases for its office facilities, data centers, and certain vehicles. The Company's leases have remaining terms up to eight years. The leases contain various renewal and termination options. The period that is subject to an option to extend the lease is included in the lease term if it is reasonably certain that the option will be exercised.

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited)

The period that is subject to an option to terminate the lease is included if it is reasonably certain that the option will not be exercised.

Lease costs related to the Company's operating and finance leases included in the condensed consolidated statements of operations were as follows (in millions):

Three Months Ended June 30,Six Months Ended June 30,
Operating lease costs:2026202520262025
Cost of revenue$3$2$5$5
Selling and marketing (excluding customer base amortization)53107
Software development2143
General and administrative1233
Total operating lease costs1182218
Finance lease costs:
Amortization of ROU assets1222
Interest on lease liabilities———1
Total finance lease costs1223
Total lease costs$12$10$24$21

Finance lease costs primarily relate to vehicles used by the Company's research teams, and the amortization of the ROU assets is recorded to cost of revenue in the condensed consolidated statements of operations. For the three and six months ended June 30, 2026 and 2025, the impact of lease costs related to short-term leases was not material.

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited)

Supplemental balance sheet information related to operating leases was as follows (in millions):

BalanceBalance Sheet LocationJune 30, 2026December 31, 2025
Operating lease liabilities$175$161
Less: imputed interest2321
Present value of lease liabilities152140
Less: current portion of lease liabilitiesLease liabilities2423
Long-term lease liabilitiesLease and other long-term liabilities$128$117
Weighted-average remaining lease term in years55
Weighted-average discount rate4.7%4.7%
ROU assetsLease right-of-use assets$128$123
Finance lease liabilities$9$12
Less: imputed interest—1
Present value of lease liabilities911
Less: current portion of lease liabilitiesLease liabilities65
Long-term lease liabilitiesLease and other long-term liabilities$3$6
Weighted-average remaining lease term in years22
Weighted-average discount rate6.1%6.3%
ROU assetsProperty and equipment, net$12$13

Supplemental cash flow information related to leases was as follows (in millions):

Six Months Ended June 30,
20262025
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows used in operating leases$12$21
Operating cash flows used in finance leases$—$1
Financing cash flows used in finance leases$3$2
ROU assets obtained in exchange for new lease obligations:
Operating leases$21$3
Finance leases$1$—

7. GOODWILL

The changes in the carrying amount of goodwill by operating segment consist of the following (in millions):

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited)

Commercial Real EstateResidential Real EstateTotal
Goodwill, December 31, 2025$1,955$2,989$4,944
Acquisitions, including measurement period adjustments———
Effect of foreign currency translation53237
Goodwill, June 30, 2026$1,960$3,021$4,981

For the six months ended June 30, 2026 and 2025, the Company did not recognize any impairment losses on goodwill.

8. INTANGIBLE ASSETS

Intangible assets consist of the following (in millions, except amortization period data):

June 30, 2026December 31, 2025Weighted- Average Amortization Period (in years)
Acquired technology and data$474$4718
Accumulated amortization(89)(55)
Acquired technology and data, net385416
Acquired customer base1,3021,33015
Accumulated amortization(428)(403)
Acquired customer base, net874927
Acquired trade names and other intangible assets52552414
Accumulated amortization(161)(146)
Acquired trade names and other intangible assets, net364378
Acquired above-market leases42429
Accumulated amortization(16)(14)
Acquired above-market leases, net2628
Acquired in-place leases31319
Accumulated amortization(11)(9)
Acquired in-place leases, net2022
Intangible assets, net$1,669$1,771

Intangible assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying value of such assets may not be recoverable. For the six months ended June 30, 2026 and 2025, the Company did not recognize any impairment losses on intangible assets.

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited)

9. LONG-TERM DEBT

The table below presents the components of outstanding debt (in millions):

June 30, 2026December 31, 2025
2.800% Senior Notes due July 15, 2030$1,000$1,000
Senior Notes unamortized discount and issuance costs(6)(7)
Long-term debt, net$994$993

Senior Notes

On July 1, 2020, the Company issued $1.0 billion aggregate principal amount of 2.800% Senior Notes due July 15, 2030. The Senior Notes were sold to a group of financial institutions as initial purchasers who subsequently resold the Senior Notes to non-U.S. persons pursuant to Regulation S under the Securities Act, and to persons reasonably believed to be qualified institutional buyers pursuant to Rule 144A under the Securities Act at a purchase price equal to 99.921% of their principal amount. Interest on the Senior Notes is payable semi-annually in arrears on January 15 and July 15. The Senior Notes may be redeemed in whole or in part by the Company (a) at any time prior to April 15, 2030 at a redemption price equal to 100% of the principal amount of the Senior Notes, plus the Applicable Premium (as calculated in accordance with the indenture governing the Senior Notes), and any accrued and unpaid interest, if any, on the principal amount of Senior Notes being redeemed to, but excluding, the redemption date, and (b) on or after April 15, 2030 at a redemption price equal to 100% of the principal amount of the Senior Notes, plus any accrued and unpaid interest, if any, on the principal amount of Senior Notes being redeemed to, but excluding, the redemption date. The Company’s obligations under the Senior Notes are guaranteed on a senior, unsecured basis by the Company’s domestic wholly-owned subsidiaries, and the indenture governing the Senior Notes contains covenants, events of default, and other customary provisions with which the Company was in compliance as of June 30, 2026.

Revolving Credit Facility

On May 24, 2024, the Company entered into the 2024 Credit Agreement, which provides for a $1.1 billion revolving credit facility with a term of five years (maturing May 24, 2029) and a letter of credit sublimit of $20 million from a syndicate of financial institutions and issuing banks.

Borrowings bear interest at a floating rate, which can be, at the Company’s option, either (a) an alternate base rate plus an applicable rate ranging from 0.125% to 0.750% or (b) a Term SOFR, SONIA rate, or EURIBOR for the specified interest period plus an applicable rate ranging from 1.125% to 1.750%, in each case depending on the Company’s Debt Rating (as defined in the 2024 Credit Agreement).

The 2024 Credit Agreement contains customary affirmative covenants for transactions of this type, including, among others, the provision of financial and other information to the administrative agent, notice to the administrative agent upon the occurrence of certain material events, preservation of existence, maintenance of properties, and compliance with laws, including environmental laws, subject to certain exceptions. The 2024 Credit Agreement contains customary negative covenants, including, among others, restrictions on the ability of the Company and its subsidiaries to merge and consolidate with other companies, restrictions on the ability of certain subsidiaries to incur indebtedness, and restrictions on the ability of the Company and certain subsidiaries to grant liens or security interests on assets, subject to certain exceptions. The 2024 Credit Agreement contains a financial maintenance covenant that requires the Company to maintain a Total Leverage Ratio (as defined in the 2024 Credit Agreement) of less than or equal to 4.50 to 1.00, tested at the end of each fiscal quarter. The 2024 Credit Agreement also provides for a number of customary events of default, including, among others: payment defaults to the lenders, voluntary and involuntary bankruptcy proceedings, covenant defaults, material inaccuracies of representations and warranties, cross-acceleration to other material indebtedness, certain change of control events, material money judgments, and other customary events of default. The occurrence of an event of default could result in the acceleration of obligations and the termination of lending commitments under the 2024 Credit Agreement. As of June 30, 2026, the Company was in compliance with the covenants in the 2024 Credit Agreement. As of June 30, 2026, the Company had no amounts drawn under this facility.

The Company had $2 million and $3 million of deferred debt issuance costs related to the revolving credit facility as of June 30, 2026 and December 31, 2025, respectively. These amounts are included in deposits and other assets on the Company's condensed consolidated balance sheets.

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited)

The Company recognized interest expense as follows (in millions):

Three Months Ended June 30,Six Months Ended June 30,
2026202520262025
Interest on outstanding borrowings$7$7$14$14
Amortization of Senior Notes discount and issuance costs——11
Interest capitalized for construction in process(5)(2)(10)(5)
Commitment fees and other10—111
Total interest expense$12$5$16$11

10. INCOME TAXES

The income tax provision reflects an effective tax rate of approximately 26% and 73% for the three months ended June 30, 2026 and 2025, respectively, and 33% and 160% for the six months ended June 30, 2026 and 2025, respectively. The decreases in the effective tax rate for the three and six months ended June 30, 2026 were primarily due to losses in the U.K. in 2025 subject to a full valuation allowance.

11. COMMITMENTS AND CONTINGENCIES

The following summarizes the Company's significant contractual obligations, including related payments due by period, as of June 30, 2026 (in millions):

Year Ending December 31,Operating lease obligationsFinance lease obligationsLong-term debt principal paymentsLong-term debt interest payments
Remainder of 2026$2$3$—$14
2027425—28
2028411—28
202933——28
203028—1,00028
Thereafter29———
Total$175$9$1,000$126

The Company leases office facilities under various non-cancelable operating leases, as well as data centers and vehicles under finance lease arrangements. The leases contain various renewal options.

See Note 6 for further discussion of the Company's lease commitments.

Litigation

Currently, and from time to time, the Company is involved in litigation incidental to the conduct of its business. The Company monitors developments in these legal matters and records a provision for probable losses at management's best estimate of a loss, or when a best estimate cannot be made, a minimum loss contingency amount within a probable range is recorded. While it is reasonably possible that an unfavorable outcome may occur as a result of one or more of the Company’s current legal matters, at this time, management has concluded that the resolutions of these matters are not expected to have a material effect on the Company's condensed consolidated financial position, future results of operations, or liquidity. Legal defense costs are expensed as incurred.

Matterport-Related Matters

On July 23, 2021, plaintiff William J. Brown, a former employee and a stockholder of Matterport, sued the Brown Defendants in the Chancery Court. Brown claimed that the Brown Defendants imposed invalid Transfer Restrictions on his shares of Matterport stock, and that Matterport’s board of directors violated their fiduciary duties in connection with a

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited)

purportedly misleading letter of transmittal. On January 11, 2022, the court issued a ruling that the Transfer Restrictions did not apply to Brown. On May 28, 2024, the court awarded Brown $79 million due to the invalid Transfer Restrictions plus pre- and post-judgment interest. On April 22, 2025, the Delaware Supreme Court substantially affirmed the Chancery Court’s damages award but reversed and remanded for additional proceedings on the manner in which post-judgment interest was calculated. On remand, the Chancery Court determined that post‑judgment interest will accrue at a variable rate until the judgment is paid in full. During the three months ended June 30, 2026, the Company paid a total of $109 million for the Brown Judgment. The Company recognized $9 million of additional interest expense related to the matter, which was recorded within interest income (expense), net in the condensed consolidated statements of operations. In addition, the Company realized net recoveries related to this matter of $17 million in the second quarter of 2026, which were recorded as a reduction to general and administrative expenses in the condensed consolidated statements of operations.

Since the Brown Judgment in May 2024, several lawsuits have been filed alleging similar claims: on July 19, 2024 by Damien Leostic and William Schmitt; on August 16, 2024 by Greg Coombe; on September 19, 2024 by Build Legacy LLC, Build the Future Trust under agreement dated November 16, 2023, Penchant Capital LLC, Penchant Trust, and iRobot Corporation. On September 16, 2024, Kimberly Burdi-Dumas, a former Matterport employee, filed a putative class action complaint on behalf of all persons or entities who were stockholders of Matterport as of July 21, 2021, and who, pursuant to the Gores Transaction, were thereafter issued and held Matterport shares that were improperly restricted from being sold until January 18, 2022. On November 26, 2024, Schmitt amended his complaint to bring a class action on behalf of former members of Matterport who did not receive their shares immediately following the closing of the Gores Transaction. On December 6, 2024, the Burdi-Dumas complaint was amended to include a second plaintiff, Janet Day, and additional claims. These cases have now been consolidated and coordinated into a single action, with discovery and briefing on the proposed class action.

As of June 30, 2026, there were no amounts accrued for these matters. Further, the range of reasonably possible losses cannot be reasonably estimated.

12. SEGMENT REPORTING

Segment Information

The Company manages its business by product portfolios in two operating segments and two reportable segments, with the primary areas of measurement and decision-making being Commercial Real Estate and Residential Real Estate. Segment reporting is aligned with the internal reporting used by the CODM, which is the Company’s Chief Executive Officer. The CODM relies on a management reporting process that provides operating segment revenue, EBITDA, and Adjusted EBITDA for making decisions and assessing performance as the source of the Company’s reportable segments. EBITDA and Adjusted EBITDA are used by management internally to measure operating and management performance and to evaluate the business. The CODM does not review any information regarding total assets by operating segment.

Operating results by segment include items that are directly attributable to each segment and shared expenses such as IT; corporate infrastructure, including facilities; finance; and legal expenses. Shared expenses are allocated based on revenue and headcount. There are no intersegment transactions. The impact of certain items that are not normal, recurring, and cash operating expenses necessary to run the operating segment are removed to determine Adjusted EBITDA and include stock-based compensation, acquisition and integration costs, restructuring and related costs, and settlements and impairments.

The Company has recast certain prior period disclosures to align with its reportable segments. See Note 2 for additional information.

Summarized EBITDA and Adjusted EBITDA information by operating segment consists of the following (in millions):

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited)

Three Months Ended June 30,
20262025
Commercial Real EstateResidential Real EstateTotalCommercial Real EstateResidential Real EstateTotal
Revenue(1)$481$444$925$446$335$781
Less:
Personnel218167385220162382
Marketing2119922020201221
General and administrative(2)80831638861149
EBITDA$162$(5)$157$118$(89)$29
Stock-based compensation expense(3)261238411152
Acquisition and integration related costs—55224
Restructuring and related costs112(1)—(1)
Settlements and impairments(17)(1)(18)1—1
Adjusted EBITDA$172$12$184$161$(76)$85
__________________________
(1) See Note 3 for details of revenue disaggregated by segment.
(2) Excludes personnel costs.
(3) Represents a significant non-cash item included in the personnel costs above
Six Months Ended June 30,
20262025
Commercial Real EstateResidential Real EstateTotalCommercial Real EstateResidential Real EstateTotal
Revenue(1)$953$869$1,822$855$658$1,513
Less:
Personnel450345795410314724
Marketing3940844737400437
General and administrative(2)175167342187137324
EBITDA$289$(51)$238$221$(193)$28
Stock-based compensation expense(3)552580631982
Acquisition and integration related costs481222426
Restructuring and related costs224426
Settlements and impairments(17)(1)(18)279
Adjusted EBITDA$333$(17)$316$312$(161)$151
__________________________
(1) See Note 3 for details of revenue disaggregated by segment.
(2) Excludes personnel costs.
(3) Represents a significant non-cash item included in the personnel costs above

The reconciliation of Adjusted EBITDA and EBITDA to income before income taxes consists of the following (in millions):

Three Months Ended June 30,Six Months Ended June 30,
2026202520262025
Adjusted EBITDA$184$85$316$151
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 impairments18(1)18(9)
EBITDA$157$29$238$28
Amortization of acquired intangible assets in cost of revenue(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)33871
Other income (expense), net(1)—16(1)14
Income before income taxes$74$22$86$15
__________________________
(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.

13. STOCKHOLDERS' EQUITY

Prior Stock Repurchase Program

In February 2025, the Board of Directors approved the Prior Stock Repurchase Program that authorized the repurchase of up to $500 million of CoStar Group Shares.

During the six months ended June 30, 2025, the Company repurchased 0.8 million CoStar Group Shares for an aggregate cost of $64 million. Subsequently, the Company completed the Prior Stock Repurchase Program, including the use of an accelerated share repurchase agreement entered into in November 2025. In total, the Company repurchased 7.1 million shares for an aggregate cost of $500 million during 2025. The aggregate purchase price of CoStar Group Shares is recorded as treasury stock and presented as a reduction to stockholders' equity.

New Stock Repurchase Program

In December 2025, the Board of Directors approved a Stock Repurchase Program which authorizes, but does not obligate, the repurchase of up to $1.5 billion of CoStar Group Shares. Stock repurchases may be effected through open market repurchases in compliance with Rule 10b-18 under the Exchange Act or through a trading plan adopted in accordance with Rule 10b5-1 of the Exchange Act. Repurchases may be made from time to time at management's discretion, and the timing and amount of any such repurchases will be determined based on share price, market conditions, legal requirements, and other relevant factors. The program has no time limit and can be discontinued at any time at the Company’s discretion.

On February 27, 2026, the Company entered into the 2026 ASR Agreement with a financial institution counterparty to repurchase $500 million of its outstanding common stock. The Company repurchased 11.2 million CoStar Group Shares during the term of the 2026 ASR Agreement based on the volume-weighted average price, net of discount, of $44.27 per share over the duration of the program, which was completed in March 2026.

During the six months ended June 30, 2026, the Company also repurchased $87 million of CoStar Group Shares pursuant to a 10b5-1 Plan, resulting in total repurchases of 13.8 million CoStar Group Shares for an aggregate cost of $589 million under

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited)

the Stock Repurchase Program, including pursuant to the 2026 ASR Agreement. Direct costs incurred to acquire the shares include estimated excise taxes, transaction fees, and other costs and are recorded in the aggregate cost for the treasury stock. Shares of common stock repurchased under the Stock Repurchase Program become treasury stock and are recorded as a reduction to stockholders' equity when the transaction is settled.

As of June 30, 2026, $913 million of fair value of the Company's shares remains available for repurchases under the Stock Repurchase Program.

Preferred Stock

The Company has 2.0 million shares of preferred stock, $0.01 par value, authorized for issuance. The Board of Directors may issue the preferred stock from time to time as shares of one or more classes or series.

Common Stock

The Company has 1.2 billion CoStar Group Shares authorized for issuance. Dividends may be declared and paid on the common stock, subject in all cases to the rights and preferences of the holders of preferred stock and authorization by the Board of Directors. In the event of liquidation or winding up of the Company and after the payment of all preferential amounts required to be paid to the holders of any series of preferred stock, any remaining funds shall be distributed among the holders of the issued and outstanding common stock.

14. EMPLOYEE BENEFIT PLANS

Stock Incentive Plans

All of the outstanding stock options, RSAs, and RSUs are covered under the 2025 Plan or legacy plans. Awards under the 2025 Plan may include one or more of the following types: (i) stock options, (ii) stock appreciation rights, (iii) RSAs, (iv) RSUs, and (v) performance RSAs and RSUs . For additional information regarding the share-based awards of the Company, see Note 16 in the Notes to the Consolidated Financial Statements in the 2025 Form 10-K. Approximately 7.8 million shares were available for future grant under the 2025 Plan as of June 30, 2026.

At June 30, 2026, there was approximately $264 million of unrecognized compensation cost related to stock incentive plans, net of estimated forfeitures, which the Company expects to recognize over a weighted-average-period of three years. See Note 2 for further discussion of stock-based compensation expense.

Stock Options

Option activity was as follows:

Number of SharesWeighted- Average Exercise PriceWeighted- Average Remaining Contract Life (in years)Aggregate Intrinsic Value (in millions)
Outstanding at December 31, 20253,203,725$38.324$102
Granted—
Exercised(907,426)$9.28$50
Canceled or expired(2,540)$9.86
Outstanding at June 30, 20262,293,759$49.844$6
Exercisable at June 30, 20262,100,991$47.133$6

The table below summarizes the resulting weighted average inputs used to calculate the estimated fair value of options awarded:

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited)

Six Months Ended June 30, 2025
Pricing ModelBlack-Scholes
Dividend yield0%
Expected volatility35.0%
Risk-free interest rate4.3%
Expected life (in years)5
Weighted-average grant date fair value$30.05

RSAs and RSUs

The Company grants RSAs and RSUs to certain executive officers, directors, and employees of the Company which vest over a specific service period. Certain grants for executive officers include performance conditions based on the achievement of operating goals over a three-year performance period. The number of shares ultimately vested under these PRSAs and PRSUs grants are determined based on a market condition measured by the Company's relative TSR compared to the S&P 500 Index over the same three-year period. The number of shares earned may be adjusted based on a TSR payout percentage, which ranges between 80% and 120% for PRSAs and between 50% and 250% for PRSUs. The vesting of RSAs and RSUs is subject to continuing employment requirements.

As of June 30, 2026, the Company determined that it was probable that at least the minimum performance goals associated with PRSAs and PRSUs granted would be met by their forfeiture dates. As of June 30, 2026, the Company expects to record aggregate stock-based compensation expense of approximately $16 million for performance-based RSAs over the remainder of 2026 and in 2027 and 2028. As of June 30, 2026, the Company expects to record aggregate stock-based compensation expense of approximately $17 million for performance-based RSUs over the remainder of 2026 and in 2027, 2028, and 2029.

The following table presents unvested RSAs activity for the six months ended June 30, 2026:

RSAsPRSAs
Number of SharesWeighted-Average Grant Date Fair Value per ShareNumber of SharesWeighted-Average Grant Date Fair Value per Share
Unvested restricted stock awards at December 31, 20253,643,210$78.32996,000$84.93
Granted63,132$31.03—$—
Vested(1,036,250)$75.10(69,364)$81.58
Canceled(157,210)$80.05(170,876)$81.58
Unvested restricted stock awards at June 30, 20262,512,882$78.50755,760$86.00

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited)

The following table presents unvested RSUs activity for the six months ended June 30, 2026:

RSUsPRSUs
Number of UnitsWeighted-Average Grant Date Fair Value per ShareNumber of UnitsWeighted-Average Grant Date Fair Value per Share
Unvested restricted stock units at December 31, 2025714,920$76.09—$—
Granted1,791,622$47.26642,603$41.02
Vested(190,932)$74.51—$—
Canceled(148,194)$64.60(26,888)$41.02
Unvested restricted stock units at June 30, 20262,167,416$53.14615,715$41.02

The assumptions used to estimate the fair value of PRSAs and PRSUs granted were as follows:

Six Months Ended June 30,
20262025
Pricing ModelMonte-Carlo simulationMonte-Carlo simulation
Dividend yield0%0%
Expected volatility33.0%31.0%
Risk-free interest rate3.4%4.2%
Expected life (in years)33
Weighted-average grant date fair value$30.19$85.29

15. SUBSEQUENT EVENTS

The Company has evaluated subsequent events and transactions that occurred after the balance sheet date up to the date that the condensed consolidated financial statements were issued. Based upon this review, the Company did not identify any material subsequent events that required adjustment or disclosure in the condensed consolidated financial statements.

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