UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

[X]   QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF

THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2014

OR

[  ]   TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from ______ to ______

Commission file number 0-24531

CoStar Group, Inc.

(Exact name of registrant as specified in its charter)

Delaware	52-2091509
(State or other jurisdiction ofincorporation or organization)	(I.R.S. EmployerIdentification No.)

1331 L Street, NW

Washington, DC 20005

(Address of principal executive offices) (zip code)

(202) 346-6500

(Registrant’s telephone number, including area code)

(877) 739-0486

(Registrant’s facsimile number, including area code)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.  Yes x  No o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).  Yes x  No o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company.  See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Securities Exchange Act of 1934.

Large accelerated filer  x	Accelerated filer  o
Non-accelerated filer  o (Do not check if a smaller reporting company)	Smaller reporting company  o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes o  No x

As of April 18, 2014, there were 28,768,360 shares of the registrant’s common stock outstanding.

COSTAR GROUP, INC.

TABLE OF CONTENTS

PART I	FINANCIAL INFORMATION
Item 1.	Financial Statements	3
	Condensed Consolidated Statements of Operations	3
	Condensed Consolidated Statements of Comprehensive (Loss)	4
	Condensed Consolidated Balance Sheets	5
	Condensed Consolidated Statements of Cash Flows	6
	Notes to Condensed Consolidated Financial Statements	7
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	24
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	39
Item 4.	Controls and Procedures	39
PART II	OTHER INFORMATION
Item 1.	Legal Proceedings	41
Item 1A.	Risk Factors	41
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	44
Item 3.	Defaults Upon Senior Securities	44
Item 4.	Mine Safety Disclosures	44
Item 5.	Other Information	44
Item 6.	Exhibits	44
Signatures		45

2

PART I — FINANCIAL INFORMATION

Item 1. Financial Statements

COSTAR GROUP, INC.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(in thousands, except per share data)

(unaudited)

	Three Months Ended March 31,
	2014			2013
Revenues	$	119,076		$	104,033
Cost of revenues	33,643			33,606
Gross margin	85,433			70,427
Operating expenses:
Selling and marketing	27,745			26,978
Software development	12,351			12,102
General and administrative	24,897			29,820
Purchase amortization	3,299			4,125
	68,292			73,025
Income (loss) from operations	17,141			(2,598		)
Interest and other income	137			104
Interest and other expense	(1,615		)	(1,755		)
Income (loss) before income taxes	15,663			(4,249		)
Income tax expense (benefit), net	5,923			(1,839		)
Net income (loss)	$	9,740		$	(2,410	)
Net income (loss) per share — basic	$	0.34		$	(0.09	)
Net income (loss) per share — diluted	$	0.34		$	(0.09	)
Weighted average outstanding shares — basic	28,273			27,428
Weighted average outstanding shares — diluted	28,840			27,428

See accompanying notes.

3

COSTAR GROUP, INC.

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

(in thousands)

(unaudited)

	Three Months Ended March 31,
	2014		2013
Net income (loss)	$	9,740	$	(2,410	)
Other comprehensive income (loss), net of tax
Foreign currency translation adjustment	259		(1,640		)
Net decrease in unrealized loss on investments	178		63
Total other comprehensive income (loss)	437		(1,577		)
Total comprehensive income (loss)	$	10,177	$	(3,987	)

See accompanying notes.

4

COSTAR GROUP, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

(in thousands)

	March 31, 2014		December 31, 2013
ASSETS	(unaudited)
Current assets:
Cash and cash equivalents	$	223,443	$	255,953
Accounts receivable, less allowance for doubtful accounts of approximately     $3,857 and $3,397 as of March 31, 2014 and December 31, 2013, respectively	32,286		20,761
Deferred and other income taxes, net	37,362		22,506
Prepaid expenses and other current assets	8,113		6,597
Debt issuance costs, net	2,547		2,649
Total current assets	303,751		308,466
Long-term investments	22,168		21,990
Property and equipment, net	57,338		57,719
Goodwill	718,824		718,587
Intangibles and other assets, net	137,168		144,472
Deposits and other assets	1,818		1,855
Debt issuance costs, net	3,729		3,893
Total assets	$	1,244,796	$	1,256,982
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Current portion of long-term debt	$	26,250	$	24,063
Accounts payable	3,943		4,939
Accrued wages and commissions	12,426		20,104
Accrued expenses	26,208		23,200
Deferred gain on the sale of building	2,523		2,523
Income taxes payable	—		2,362
Deferred revenue	35,926		34,362
Total current liabilities	107,276		111,553
Long-term debt, less current portion	122,500		129,062
Deferred gain on the sale of building	25,655		26,286
Deferred rent	23,353		22,828
Deferred income taxes, net	31,390		34,582
Income taxes payable	4,829		4,809
Total liabilities	315,003		329,120
Total stockholders’ equity	929,793		927,862
Total liabilities and stockholders’ equity	$	1,244,796	$	1,256,982

See accompanying notes.

5

COSTAR GROUP, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands)

(unaudited)

	Three Months Ended March 31,
	2014			2013
Operating activities:
Net income (loss)	$	9,740		$	(2,410	)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation	3,540			2,909
Amortization	6,311			7,257
Amortization of debt issuance costs	710			747
Impairment loss	1,053			—
Excess tax benefit from stock-based compensation	(23,429		)	(7,305		)
Stock-based compensation expense	7,879			17,326
Deferred income tax expense (benefit), net	5,090			(7,657		)
Provision for losses on accounts receivable	986			321
Changes in operating assets and liabilities:
Accounts receivable	(12,499		)	(8,380		)
Prepaid expenses and other current assets	(1,509		)	(325		)
Deposits and other assets	39			322
Accounts payable and other liabilities	(5,991		)	3,587
Deferred revenue	1,525			4,316
Net cash provided by (used in) operating activities	(6,555		)	10,708
Investing activities:
Proceeds from sale and settlement of investments	—			83
Purchases of property and equipment and other assets	(4,149		)	(4,643		)
Net cash used in investing activities	(4,149		)	(4,560		)
Financing activities:
Payments of long-term debt	(4,375		)	(4,375		)
Payments of deferred consideration	(1,344		)	(1,344		)
Excess tax benefit from stock-based compensation	23,429			7,305
Repurchase of restricted stock to satisfy tax withholding obligations	(42,555		)	(3,144		)
Proceeds from exercise of stock options and employee stock purchase plan	3,001			6,807
Net cash provided by (used in) financing activities	(21,844		)	5,249
Effect of foreign currency exchange rates on cash and cash equivalents	38			(30		)
Net increase (decrease) in cash and cash equivalents	(32,510		)	11,367
Cash and cash equivalents at the beginning of period	255,953			156,027
Cash and cash equivalents at the end of period	$	223,443		$	167,394

See accompanying notes.

6

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited)

1. ORGANIZATION

CoStar Group, Inc. (the “Company” or “CoStar”) provides information, analytics and marketing services to the commercial real estate and related business community through its comprehensive, proprietary database of commercial real estate information covering the United States (“U.S.”) and parts of the United Kingdom (“U.K.”) and France, as well as its complementary online marketplace of commercial real estate listings. The Company operates within two operating segments, U.S. and International, and its services are typically distributed to its clients under subscription-based license agreements that renew automatically, a majority of which have a term of one year.

2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation

The condensed consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation. Accounting policies are consistent for each operating segment.

Interim Financial Statements

The accompanying unaudited condensed consolidated financial statements of the Company have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information. In the opinion of the Company’s management, the financial statements reflect all adjustments necessary to present fairly the Company’s financial position at March 31, 2014, the results of its operations for the three months ended March 31, 2014 and 2013, its comprehensive income for the three months ended March 31, 2014 and 2013, and its cash flows for the three months ended March 31, 2014 and 2013. These adjustments are of a normal recurring nature.

Certain notes and other information have been condensed or omitted from the interim financial statements presented in this Quarterly Report on Form 10-Q. Therefore, these financial statements should be read in conjunction with the Company’s Annual Report on Form 10-K for the year ended December 31, 2013.

The results of operations for the three months ended March 31, 2014 are not necessarily indicative of future financial results.

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. Actual results could differ from those estimates.

Foreign Currency Translation

The Company’s functional currency in its foreign locations is the local currency. Assets and liabilities are translated into U.S. dollars as of the balance sheet dates. Revenues, expenses, gains and losses are translated at the average exchange rates in effect during each period. Gains and losses resulting from translation are included in accumulated other comprehensive income (loss). Net gains or losses resulting from foreign currency exchange transactions are included in the condensed consolidated statements of operations. There were no material gains or losses from foreign currency exchange transactions for the three months ended March 31, 2014 and 2013.

7

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) — (CONTINUED)

2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES — (CONTINUED)

Accumulated Other Comprehensive Loss

The components of accumulated other comprehensive loss were as follows (in thousands):

	March 31, 2014			December 31, 2013
Foreign currency translation adjustment	$	(3,744	)	$	(4,003	)
Accumulated net unrealized loss on investments, net of tax	(1,349		)	(1,527		)
Total accumulated other comprehensive loss	$	(5,093	)	$	(5,530	)

There were no amounts reclassified out of accumulated other comprehensive loss to the condensed consolidated statements of operations for the three months ended March 31, 2014 and 2013.

Net Income (Loss) Per Share

Net income (loss) 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 Company’s potentially dilutive securities include stock options and restricted stock. Diluted net income (loss) per share considers the impact of potentially dilutive securities except in periods in which there is a net loss, as the inclusion of the potentially dilutive common shares would have an anti-dilutive effect.

The following table sets forth the calculation of basic and diluted net income (loss) per share (in thousands, except per share data):

	Three Months Ended March 31,
Numerator:	2014		2013
Net income (loss)	$	9,740	$	(2,410	)
Denominator:
Denominator for basic net income (loss) per share — weighted-average outstanding shares	28,273		27,428
Effect of dilutive securities:
Stock options and restricted stock	567		—
Denominator for diluted net income (loss) per share — weighted-average outstanding shares	28,840		27,428
Net income (loss) per share — basic	$	0.34	$	(0.09	)
Net income (loss) per share — diluted	$	0.34	$	(0.09	)

Employee stock options with exercise prices greater than the average market price of the Company’s common stock for the period are excluded from the calculation of diluted net income (loss) per share as their inclusion would be anti-dilutive. Stock options to purchase approximately 88,000 shares that were outstanding for the three months ended March 31, 2014 were not included in the computation of diluted net income per share because the exercise price of the stock options was greater than the average market share price of the common stock during the period. The Company did not consider the impact of potentially dilutive securities for the three months ended March 31, 2013 when calculating the diluted net loss per share because the inclusion of the potentially dilutive common shares would have an anti-dilutive effect. Additionally, shares of restricted common stock that vest based on Company performance conditions 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.

Stock-Based Compensation

Equity instruments issued in exchange for employee services 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.

8

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) — (CONTINUED)

2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES — (CONTINUED)

Stock-Based Compensation — (Continued)

Stock-based compensation expense is measured at the grant date of the stock-based awards that vest over set time periods based on their fair values, and is recognized on a straight line basis as expense over the vesting periods of the awards, net of an estimated forfeiture rate. For equity instruments that vest based on performance, the Company assesses the probability of the achievement of the performance conditions at the end of each reporting period, or more frequently based upon the occurrence of events that may change the probability of whether the performance conditions would be met. If the Company's initial estimates of the achievement of the performance conditions change, the related stock-based compensation expense and timing of recognition 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.

In 2012, the Company granted performance-based restricted common stock awards that vest upon the Company's achievement of $90.0 million of cumulative net income before interest, income taxes, depreciation and amortization ("EBITDA") over a period of four consecutive calendar quarters if such performance is achieved by March 31, 2017, subject to certain approvals under the CoStar Group, Inc. 2007 Stock Incentive Plan. As of March 31, 2014, the Company had satisfied all performance and service conditions, and as a result, the restricted common stock granted under these awards vested. The Company recorded approximately $2.2 million and $11.3 million of stock-based compensation expense related to the performance-based restricted common stock for the three months ended March 31, 2014 and 2013, respectively.

Cash flows resulting from excess tax benefits are classified as part of cash flows from operating and financing activities. Excess tax benefits represent tax benefits related to stock-based compensation in excess of the associated deferred tax asset for such equity compensation. Net cash proceeds from the exercise of stock options and the purchase of shares under the Employee Stock Purchase Plan (“ESPP”) were approximately $3.0 million and $6.8 million for the three months ended March 31, 2014 and 2013, respectively. There were approximately $23.4 million and $7.3 million of excess tax benefits realized from stock options exercised and restricted stock awards vested for the three months ended March 31, 2014 and 2013, respectively. The effect of the excess tax benefit as of March 31, 2014 was primarily recorded in deferred and other income taxes, net and additional paid-in capital included within total stockholders' equity in the condensed consolidated balance sheets. The effect of the excess tax benefit as of December 31, 2013 was recorded in current income taxes payable and additional paid-in capital included within total stockholders' equity in the condensed consolidated balance sheets.

Stock-based compensation expense for stock options and restricted stock issued under equity incentive plans and stock purchases under the ESPP included in the Company’s results of operations were as follows (in thousands):

	Three Months Ended March 31,
	2014		2013
Cost of revenues	$	1,208	$	1,401
Selling and marketing	1,101		1,808
Software development	1,447		2,431
General and administrative	4,123		11,686
Total stock-based compensation	$	7,879	$	17,326

Options to purchase 43,416 and 146,530 shares were exercised during the three months ended March 31, 2014 and 2013, respectively.

9

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) — (CONTINUED)

2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES — (CONTINUED)

Capitalized Product Development Costs

Product development costs are expensed as incurred until technological feasibility has been established, at which time such costs are capitalized. Costs are capitalized, to the extent that the capitalizable costs do not exceed the realizable value of such costs, until the product is available for general release to customers. The Company defines the establishment of technological feasibility as the completion of all planning, designing, coding and testing activities that are necessary to establish products that meet design specifications including functions, features and technical performance requirements. The Company's capitalized product development costs had a total net book value of approximately $64,000 and $111,000 as of March 31, 2014 and December 31, 2013, respectively. These capitalized product development costs are included in intangible and other assets in the Company’s condensed consolidated balance sheets. Amortization is computed using a straight-line method over the remaining estimated economic life of the product, typically three to five years after the software is ready for its intended use. The Company amortized capitalized product development costs of approximately $47,000 for each of the three months ended March 31, 2014 and 2013.   

Debt Issuance Costs

Costs incurred in connection with the issuance of long-term debt are capitalized and amortized as interest expense over the term of the related debt using the effective interest method. Upon a refinancing, 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 using the effective interest method. The Company had capitalized debt issuance costs of approximately $6.3 million and $6.5 million as of March 31, 2014 and December 31, 2013, respectively. The debt issuance costs are associated with the financing commitment received from JPMorgan Chase Bank, N.A. (“J.P. Morgan Bank”) on April 27, 2011 and the subsequent term loan facility and revolving credit facility established under a credit agreement dated February 16, 2012 (the “2012 Credit Agreement”). See Notes 7, 11 and 12 for additional information regarding the financing commitment with J.P. Morgan Bank and the term loan facility and revolving credit facility. The Company amortized debt issuance costs of approximately $710,000 and $747,000 for the three months ended March 31, 2014 and 2013, respectively.

Recent Accounting Pronouncements

There have been no developments to the Recent Accounting Pronouncements discussion included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2013, including the expected dates of adoption and estimated effects on the Company’s condensed consolidated financial statements.

3. INVESTMENTS

The Company determines the appropriate classification of debt and equity investments at the time of purchase and re-evaluates such designation as of each balance sheet date. The Company considers all of its investments to be available-for-sale. The Company's investments consist of long-term variable rate debt instruments with an auction reset feature, referred to as auction rate securities (“ARS”). Investments are carried at fair market value.

Scheduled maturities of investments classified as available-for-sale as of March 31, 2014 are as follows (in thousands):

Maturity	Fair Value
Due:
April 1, 2014 — March 31, 2015	$	—
April 1, 2015 — March 31, 2019	851
April 1, 2019 — March 31, 2024	—
After March 31, 2024	21,317
Available-for-sale investments	$	22,168

10

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) — (CONTINUED)

3. INVESTMENTS — (CONTINUED)

The Company had no realized gains on its investments for each of the three months ended March 31, 2014 and 2013. The Company had no realized losses on its investments for each of the three months ended March 31, 2014 and 2013. Realized gains and losses from the sale of available-for-sale securities are determined on a specific-identification basis. 

Changes in unrealized holding gains and losses, net of the related tax effect, on available-for-sale securities are excluded from earnings and are reported as a separate component of accumulated other comprehensive income (loss) in stockholders’ equity until realized. A decline in market value of any available-for-sale security below cost that is deemed to be other-than-temporary results in a reduction in carrying amount to fair value. The impairment is charged to earnings and a new cost basis for the security is established. Dividend and interest income are recognized when earned.

As of March 31, 2014, the amortized cost basis and fair value of investments classified as available-for-sale were as follows (in thousands):

	Amortized Cost		Gross Unrealized Gains		Gross  Unrealized Losses			Fair Value
Auction rate securities	$	23,517	$	409	$	(1,758	)	$	22,168
Available-for-sale investments	$	23,517	$	409	$	(1,758	)	$	22,168

As of December 31, 2013, the amortized cost basis and fair value of investments classified as available-for-sale were as follows (in thousands):

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Auction rate securities	$	23,517	$	411	$	(1,938	)	$	21,990
Available-for-sale investments	$	23,517	$	411	$	(1,938	)	$	21,990

The unrealized losses on the Company’s investments as of March 31, 2014 and December 31, 2013 were generated primarily from changes in interest rates. The losses are considered temporary, as the contractual terms of these investments do not permit the issuer to settle the security at a price less than the amortized cost of the investment. Because the Company does not intend to sell these instruments and it is more likely than not that the Company will not be required to sell these instruments prior to anticipated recovery, which may be at maturity, the Company does not consider these investments to be other-than-temporarily impaired as of March 31, 2014 and December 31, 2013. See Note 4 for further discussion of the fair value of the Company’s financial assets.

The components of the Company’s investments in an unrealized loss position for twelve months or longer were as follows (in thousands):

	March 31, 2014					December 31, 2013
	Aggregate Fair  Value		Gross Unrealized Losses			Aggregate Fair  Value		Gross Unrealized Losses
Auction rate securities	$	21,317	$	(1,758	)	$	21,137	$	(1,938	)
Investments in an unrealized loss position	$	21,317	$	(1,758	)	$	21,137	$	(1,938	)

The Company did not have any investments in an unrealized loss position for less than twelve months as of March 31, 2014 and December 31, 2013, respectively.

11

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) — (CONTINUED)

4. FAIR VALUE

Fair value is defined as the price that would be received in the sale of an asset or paid to transfer a liability in an orderly transaction between market participants. There is a three-tier fair value hierarchy, which categorizes the inputs used in measuring fair value. These tiers include: Level 1, defined as observable inputs such as quoted prices in active markets for identical assets or liabilities; Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable; and Level 3, defined as unobservable inputs for which little or no market data exists, therefore requiring an entity to develop its own assumptions.

The following table represents the Company's fair value hierarchy for its financial assets (cash, cash equivalents and investments) measured at fair value on a recurring basis as of March 31, 2014 (in thousands):

	Level 1		Level 2		Level 3		Total
Assets:
Cash	$	20,358	$	—	$	—	$	20,358
Money market funds	263		—		—		263
Commercial paper	202,822		—		—		202,822
Auction rate securities	—		—		22,168		22,168
Total assets measured at fair value	$	223,443	$	—	$	22,168	$	245,611

The following table represents the Company's fair value hierarchy for its financial assets (cash, cash equivalents and investments) and liabilities measured at fair value on a recurring basis as of December 31, 2013 (in thousands):

	Level 1		Level 2		Level 3		Total
Assets:
Cash	$	134,989	$	—	$	—	$	134,989
Money market funds	50,593		—		—		50,593
Commercial paper	70,371		—		—		70,371
Auction rate securities	—		—		21,990		21,990
Total assets measured at fair value	$	255,953	$	—	$	21,990	$	277,943
Liabilities:
Deferred consideration	$	—	$	—	$	1,344	$	1,344
Total liabilities measured at fair value	$	—	$	—	$	1,344	$	1,344

The Company’s Level 3 assets consist of ARS, whose underlying assets are primarily student loan securities supported by guarantees from the Federal Family Education Loan Program (“FFELP”) of the U.S. Department of Education.

The following tables summarize changes in fair value of the Company’s Level 3 assets for the three months ended March 31, 2014 and 2013 (in thousands):

	Three Months Ended March 31,
	2014		2013
Balance at beginning of period	$	21,990	$	21,662
Decrease in unrealized loss included in accumulated other comprehensive loss	178		63
Settlements	—		(50		)
Balance at end of period	$	22,168	$	21,675

12

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) — (CONTINUED)

4. FAIR VALUE — (CONTINUED)

The following table summarizes changes in fair value of the Company’s Level 3 assets from December 31, 2007 to March 31, 2014 (in thousands):

	Auction Rate Securities
Balance at December 31, 2007	$	53,975
Increase in unrealized loss included in accumulated other comprehensive loss	(3,710		)
Settlements	(20,925		)
Balance at December 31, 2008	29,340
Decrease in unrealized loss included in accumulated other comprehensive loss	684
Settlements	(300		)
Balance at December 31, 2009	29,724
Decrease in unrealized loss included in accumulated other comprehensive loss	40
Settlements	(575		)
Balance at December 31, 2010	29,189
Decrease in unrealized loss included in accumulated other comprehensive loss	245
Settlements	(4,850		)
Balance at December 31, 2011	24,584
Auction rate securities upon acquisition	442
Decrease in unrealized loss included in accumulated other comprehensive loss	836
Settlements	(4,200		)
Balance at December 31, 2012	21,662
Decrease in unrealized loss included in accumulated other comprehensive loss	378
Settlements	(50		)
Balance at December 31, 2013	21,990
Decrease in unrealized loss included in accumulated other comprehensive loss	178
Settlements	—
Balance at March 31, 2014	$	22,168

ARS are variable rate debt instruments whose interest rates are reset approximately every 28 days. The majority of the underlying securities have contractual maturities greater than twenty years. The ARS are recorded at fair value.

As of March 31, 2014, the Company held ARS with $24.3 million par value, all of which failed to settle at auction. The majority of these investments are of high credit quality with AAA credit ratings and are primarily student loan securities supported by guarantees from the FFELP of the U.S. Department of Education. The Company may not be able to liquidate and fully recover the carrying value of the ARS in the near term. As a result, these securities are classified as long-term investments in the Company’s condensed consolidated balance sheet as of March 31, 2014.  

While the Company continues to earn interest on its ARS investments at the contractual rate, these investments are not currently actively trading and therefore do not currently have a readily determinable market value. The estimated fair value of the ARS no longer approximates par value. The Company used a discounted cash flow model to determine the estimated fair value of its investment in ARS as of March 31, 2014. The assumptions used in preparing the discounted cash flow model include estimates for interest rates, credit spreads, timing and amount of contractual cash flows, liquidity risk premiums, expected holding periods and default risk. The Company updates the discounted cash flow model on a quarterly basis to reflect any changes in the assumptions used in the model and settlements of ARS investments that occurred during the period.

13

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) — (CONTINUED)

4. FAIR VALUE — (CONTINUED)

The only significant unobservable input in the discounted cash flow model is the discount rate. The discount rate used represents the Company's estimate of the yield expected by a market participant from the ARS investments. The weighted average discount rate used in the discounted cash flow model as of March 31, 2014 and December 31, 2013 was approximately 4.9%. Selecting another discount rate within the range used in the discounted cash flow model would not result in a significant change to the fair value of the ARS.

Based on this assessment of fair value, as of March 31, 2014, the Company determined there was a decline in the fair value of its ARS investments of approximately $1.3 million. The decline was deemed to be a temporary impairment and recorded as an unrealized loss in accumulated other comprehensive loss in stockholders’ equity. In addition, while a majority of the ARS are currently rated AAA, if the issuers are unable to successfully close future auctions and/or their credit ratings deteriorate, the Company may be required to record additional unrealized losses in accumulated other comprehensive loss or an other-than-temporary impairment charge to earnings on these investments.

As of March 31, 2014, the Company had no Level 3 liabilities. As of March 31, 2013, the Company held Level 3 liabilities for deferred consideration that it acquired as a result of the April 30, 2012 acquisition of LoopNet. The deferred consideration totaled $1.3 million as of December 31, 2013 and included potential deferred cash payments in connection with acquisitions LoopNet completed in 2010 including: (i) potential deferred cash payments due to the sellers of LandsofAmerica.com, LLC ("LandsofAmerica") on March 31, 2014 based on LandsofAmerica's achievement of financial and operational milestones, resulting in undiscounted deferred consideration as of December 31, 2013 of approximately $1.0 million; and (ii) potential deferred cash payments due to the sellers of Reaction Corp. ("Reaction Web") on March 31, 2014 based on Reaction Web's achievement of revenue milestones, resulting in undiscounted deferred consideration as of December 31, 2013 of approximately $344,000. On March 28, 2013, the Company paid $1.0 million to the sellers of LandsofAmerica for the achievement of financial and operational milestones in 2012 and paid approximately $344,000 to the sellers of Reaction Web for the achievement of revenue milestones in 2012. On March 31, 2014, the Company paid $1.0 million to the sellers of LandsofAmerica for the achievement of financial and operational milestones in 2013 and paid approximately $344,000 to the sellers of Reaction Web for the achievement of revenue milestones in 2013.

The following tables summarize changes in fair value of the Company’s Level 3 liabilities for the three months ended March 31, 2014 and 2013 (in thousands):

	Three Months Ended March 31,
	2014			2013
Balance at beginning of period	$	1,344		$	2,304
Accretion for period	—			126
Payments made during period	(1,344		)	(1,344		)
Balance at end of period	$	—		$	1,086

The following table summarizes changes in fair value of the Company’s Level 3 liabilities from December 31, 2012 to March 31, 2014 (in thousands):

	Deferred Consideration
Balance at December 31, 2012	$	2,304
Accretion for 2013	384
Payments made in 2013	(1,344		)
Balance at December 31, 2013	1,344
Payments made from January 1, 2014 – March 31, 2014	(1,344		)
Balance at March 31, 2014	$	—

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COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) — (CONTINUED)

4. FAIR VALUE — (CONTINUED)

Prior to December 31, 2013, the Company used a discounted cash flow model to determine the estimated fair value of its Level 3 liabilities. The assumptions used in preparing the discounted cash flow model included the discount rate and probabilities for completion of financial and operational milestones. The only significant unobservable input in the discounted cash flow model used to determine the estimated fair value of the Company's Level 3 liabilities was the discount rate. The discount rate used represented LoopNet's cost of equity at the time of each acquisition plus a margin for counterparty risk. As of December 31, 2013, the Company recorded a liability for the entire amount of undiscounted deferred consideration paid on March 31, 2014.

Concentration of Credit Risk and Financial Instruments

The Company performs ongoing credit evaluations of its customers’ financial condition and generally does not require that its customers’ obligations to the Company be secured. The Company maintains reserves for estimated inherent credit losses, and such losses have been within management’s expectations. The large size and widespread nature of the Company’s customer base and the Company’s lack of dependence on any individual customer mitigates the risk of nonpayment of the Company’s accounts receivable. The carrying amount of the accounts receivable approximates the net realizable value. The carrying value of accounts receivable, accounts payable, accrued expenses, and long-term debt approximates fair value.

5. GOODWILL

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

	United States		International		Total
Goodwill, December 31, 2012	$	692,639	$	25,439	$	718,078
Effect of foreign currency translation	—		509		509
Goodwill, December 31, 2013	692,639		25,948		718,587
Effect of foreign currency translation	—		237		237
Goodwill, March 31, 2014	$	692,639	$	26,185	$	718,824

15

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) — (CONTINUED)

6. INTANGIBLES AND OTHER ASSETS

Intangibles and other assets consist of the following (in thousands, except amortization period data):

	March 31, 2014			December 31, 2013			Weighted- Average Amortization Period (in years)
Capitalized product development cost	$	2,140		$	2,140		4
Accumulated amortization	(2,076		)	(2,029		)
Capitalized product development cost, net	64			111
Building photography	13,804			13,743			5
Accumulated amortization	(12,154		)	(12,005		)
Building photography, net	1,650			1,738
Acquired database technology	77,386			77,368			5
Accumulated amortization	(43,823		)	(41,073		)
Acquired database technology, net	33,563			36,295
Acquired customer base	131,089			130,960			10
Accumulated amortization	(78,167		)	(74,734		)
Acquired customer base, net	52,922			56,226
Acquired trade names and other (1)	57,552			59,336			7
Accumulated amortization	(8,583		)	(9,234		)
Acquired trade names and other, net	48,969			50,102
Intangibles and other assets, net	$	137,168		$	144,472

⁽¹⁾ The weighted-average amortization period for acquired trade names excludes $48.7 million for acquired trade names recorded in connection with the LoopNet acquisition on April 30, 2012, which amount is not amortized, but is subject to annual impairment tests.

The Company recently finalized a branding initiative plan that includes, among other things, re-branding some of the services provided by its wholly owned subsidiaries, in order to better organize, update, streamline and optimize the Company’s branding strategy. The Company expects to launch the branding initiative externally in the second quarter of 2014. Following the external launch of the branding initiative, the Company intends to cease using certain of its trade names. The Company evaluated the assets for impairment and determined that the carrying value of certain trade names exceeded the fair value. The Company recorded an impairment charge of approximately $1.1 million in cost of revenues in the condensed consolidated statements of operations within the Company's U.S. operating segment. The adjusted carrying value of the Company's trade name intangible assets associated with the branding initiative will be amortized through the date of the external launch of the branding initiative.

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COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) — (CONTINUED)

7. LONG-TERM DEBT 

On February 16, 2012, the Company entered into a term loan facility and revolving credit facility pursuant to the 2012 Credit Agreement dated February 16, 2012, by and among the Company, as borrower, CoStar Realty Information, Inc. ("CoStar Realty"), as co-borrower, J.P. Morgan Bank, as administrative agent, and the other lenders thereto. The 2012 Credit Agreement provides for a $175.0 million term loan facility and a $50.0 million revolving credit facility, each with a term of five years. On April 30, 2012, the Company borrowed $175.0 million under the term loan facility and used those proceeds, together with net proceeds from the Company's equity offering conducted in June 2011, to pay a portion of the merger consideration and transaction costs related to the LoopNet merger. The carrying value of the term loan facility approximates fair value and can be estimated through Level 3 unobservable inputs using an expected present value technique based on expected cash flows discounted using the current credit-adjusted risk-free rate, which approximates the rate of interest on the term loan facility at the origination.

The revolving credit facility includes a subfacility for swingline loans of up to $5.0 million and up to $10.0 million of the revolving credit facility is available for the issuances of letters of credit. The term loan facility amortizes in quarterly installments in amounts resulting in an annual amortization of 5% during the first year, 10% during the second year, 15% during the third year, 20% during the fourth year and 50% during the fifth year after the closing date. The loans under the 2012 Credit Agreement bear interest, at the Company's option, either (i) during any interest period selected by the Company, at the London interbank offered rate for deposits in U.S. dollars with a maturity comparable to such interest period, adjusted for statutory reserves (“LIBOR”), plus a spread of 2.00% per annum, or (ii) at the greatest of (x) the prime rate from time to time announced by J.P. Morgan Bank, (y) the federal funds effective rate plus ½ of 1.00% and (z) LIBOR for a one-month interest period plus 1.00%, plus a spread of 1.00% per annum. If an event of default occurs under the 2012 Credit Agreement, the interest rate on overdue amounts will increase by 2.00% per annum. The obligations under the 2012 Credit Agreement are guaranteed by all material subsidiaries of the Company and secured by a lien on substantially all of the assets of the Company and its material subsidiaries, in each case subject to certain exceptions.

The 2012 Credit Agreement requires the Company to maintain a Debt Service Coverage Ratio (as defined in the 2012 Credit Agreement) of at least 1.5 to 1.0 and a Total Leverage Ratio (as defined in the 2012 Credit Agreement) that does not exceed 2.75 to 1.00 during each of the three months ending March 31, 2014 and June 30, 2014; and 2.50 to 1.00 thereafter. The 2012 Credit Agreement also includes other covenants that were effective as of April 30, 2012, including covenants that, subject to certain exceptions, restrict the ability of the Company and its subsidiaries to (i) incur additional indebtedness, (ii) create, incur, assume or permit to exist any liens, (iii) enter into mergers, consolidations or similar transactions, (iv) make investments and acquisitions, (v) make certain dispositions of assets, (vi) make dividends, distributions and prepayments of certain indebtedness, and (vii) enter into certain transactions with affiliates. The Company was in compliance with the covenants in the 2012 Credit Agreement as of March 31, 2014.

Commencing with the fiscal year ended December 31, 2012, the 2012 Credit Agreement requires the Company to make an annual prepayment of the term loan facility equal to a percentage of Excess Cash Flow (as defined in the 2012 Credit Agreement) to reduce the principal amount outstanding under the term loan facility. The prepayment percentage is 50% when the Total Leverage Ratio exceeds 3.00 to 1.00; 25% when the Total Leverage Ratio is greater than 2.50 to 1.00 but equal to or less than 3.00 to 1.00; and 0% when the Total Leverage Ratio is equal to or less than 2.50 to 1.00. This prepayment requirement is reduced by the amount of prior voluntary prepayments during the respective fiscal year, subject to certain exceptions set forth in the 2012 Credit Agreement. The Excess Cash Flow payment, if required, is due within ten business days of the date on which the annual financial statements are delivered or required to be delivered to the lenders pursuant to the 2012 Credit Agreement. For the fiscal year ended December 31, 2013, the Company was not required to make an Excess Cash Flow payment.

In connection with obtaining the term loan facility and revolving credit facility, the Company incurred approximately $11.5 million in debt issuance costs, which were capitalized and are being amortized as interest expense over the term of the 2012 Credit Agreement using the effective interest method. The debt issuance costs are comprised of approximately $9.2 million in underwriting fees and approximately $2.3 million primarily related to legal fees associated with the debt issuance. 

As of March 31, 2014 and December 31, 2013, no amounts were outstanding under the revolving credit facility. Total interest expense for the term loan facility was approximately $1.6 million and $1.8 million for the three months ended March 31, 2014 and 2013, respectively. Interest expense included amortized debt issuance costs of approximately $710,000 and $747,000 for the three months ended March 31, 2014 and 2013, respectively. Total interest paid for the term loan facility was approximately $905,000 and $1.4 million for the three months ended March 31, 2014 and 2013, respectively. See Note 11 for details on the February 2014 financing commitment letter from JPMorgan Chase Bank, N.A., Bank of America, N.A., SunTrust Bank and Wells Fargo Bank, National Association and see Note 12 for details on the related term loan facility and revolving credit facility provided to the Company in April 2014.

17

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) — (CONTINUED)

8. INCOME TAXES

The income tax provision for the three months ended March 31, 2014 and 2013 reflects an effective tax rate of approximately 38% and 43%, respectively.

The Company is subject to taxation in the U.S. and various states and foreign jurisdictions. The Company is currently under Internal Revenue Service ("IRS") audit in the U.S. for tax year 2010 and its subsidiary LoopNet is under IRS audit for tax years 2009, 2010, 2011 and the four months ended April 30, 2012. While no formal assessments have been received, the Company believes it has provided adequate reserves related to all matters in the tax periods open to examination. Although the timing of income tax audit resolutions and negotiations with taxing authorities is highly uncertain, the Company does not anticipate a significant change to the total amount of unrecognized income tax benefits within the next 12 months.

9. COMMITMENTS AND CONTINGENCIES

The Company leases office facilities and office equipment under various non-cancelable operating leases. The leases contain various renewal options.

On February 16, 2012, the Company entered into the 2012 Credit Agreement. The 2012 Credit Agreement provides for a $175.0 million term loan facility and a $50.0 million revolving credit facility, each with a term of five years. See Note 7 for additional information regarding the 2012 Credit Agreement. See Note 11 for details on the February 2014 financing commitment letter from JPMorgan Chase Bank, N.A., Bank of America, N.A., SunTrust Bank and Wells Fargo Bank, National Association and see Note 12 for details on the repayment and termination of the 2012 Credit Agreement and the term loan facility and revolving credit facility provided to the Company in April 2014.

In May 2011, LoopNet, the Board of Directors of LoopNet (“the LoopNet Board”) and/or the Company were named as defendants in three purported class action lawsuits brought by alleged LoopNet stockholders challenging LoopNet's proposed merger with the Company. The stockholder actions alleged, among other things, that (i) each member of the LoopNet Board breached his fiduciary duties to LoopNet and its stockholders in authorizing the sale of LoopNet to the Company, (ii) the merger did not maximize value to LoopNet stockholders, (iii) LoopNet and the Company made incomplete or materially misleading disclosures about the transaction and (iv) LoopNet and the Company aided and abetted the breaches of fiduciary duty allegedly committed by the members of the LoopNet Board. The stockholder actions sought class action certification and equitable relief, including an injunction against consummation of the merger. The parties stipulated to the consolidation of the actions, and to permit the filing of a consolidated complaint. In June 2011, counsel for the parties entered into a memorandum of understanding in which they agreed on the terms of a settlement of this litigation, which could result in a loss to the Company of approximately $200,000. On March 20, 2013, the California Superior Court declined to grant preliminary approval to the proposed settlement and issued an order scheduling a hearing on June 11, 2013 to show good cause why the case should not be dismissed. Shortly before the hearing, the plaintiffs filed a third supplemental submission in support of their motion for preliminary approval of the proposed settlement. The show cause hearing is scheduled for May 13, 2014.  

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COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) — (CONTINUED)

9. COMMITMENTS AND CONTINGENCIES — (CONTINUED)

On January 3, 2012, LoopNet, the Company’s wholly owned subsidiary, was sued by CIVIX-DDI, LLC (“Civix”) in the U.S. District Court for the Eastern District of Virginia for alleged infringement of U.S. Patent Nos. 6,385,622 and 6,415,291. The complaint seeks unspecified damages, attorneys' fees and costs. On February 16, 2012, LoopNet filed an answer to Civix’s complaint and filed counterclaims against Civix seeking, among other things, declaratory relief that the asserted patents are invalid, not infringed, and that Civix committed inequitable conduct during the prosecution and re-examination of the asserted patents. On or about May 14, 2012, Civix filed a motion for leave to amend its complaint against LoopNet in the U.S. District Court for the Eastern District of Virginia seeking to add the Company as a defendant, alleging that the Company's products also infringe Civix’s patents. The Company filed a motion opposing Civix’s motion, and on June 21, 2012, the district court denied Civix's motion to amend its complaint. On June 21, 2012, the Company filed an action in the U.S. District Court for the Northern District of Illinois seeking a declaratory judgment of non-infringement and invalidity against Civix. On August 14, 2012, the Company amended its complaint against Civix to assert an affirmative claim against Civix for breach of contract, alleging Civix violated its license agreement and covenant not to sue with one of the Company's technology licensors. On August 30, 2012, the Eastern District of Virginia transferred Civix’s case against LoopNet to the Northern District of Illinois, where both cases are now pending. On October 29, 2012, Civix filed a separate action against LoopNet in the Northern District of Illinois alleging infringement of U.S. Patent No. 8,296,335. That case was later consolidated with Civix’s original lawsuit against LoopNet. Civix amended its complaint against the Company on November 8, 2012 to add claims under Patent No. 8,296,335 as well. On November 15, 2012, LoopNet filed an amended answer and counterclaim against Civix, asserting an affirmative claim against Civix for breach of contract, alleging Civix violated its license agreement and covenant not to sue with one of LoopNet's technology licensors. The U.S. District Court for the Northern District of Illinois construed the language of the patent on September 23, 2013, and has issued a schedule providing for expert discovery and dispositive motions in this case through April 2014, but no trial date has been set. On November 25, 2013, Civix submitted its expert’s report of damages, which estimated the payment it deemed appropriate in the event that the Company is found liable of infringement. The Company believes that Civix’s calculation of damages is based on improper assumptions and miscalculations, and is otherwise unsupported. The Company submitted its own expert’s report of damages, which concluded that the appropriate payment to be made in the event that the Company is found liable of infringement is significantly less than Civix’s estimate of appropriate damages. Moreover, the Company’s expert’s report of damages concluded that while Civix’s calculation of damages was fundamentally flawed and should not be used to determine damages, simply applying certain necessary adjustments to Civix’s calculation as outlined in the Company’s report resulted in a significant reduction in Civix’s calculation of damages to approximately $3.7 million. On November 5, 2013 the Company offered to settle all outstanding litigation with Civix for $600,000. On April 9, 2014 the Company offered to settle all outstanding litigation with Civix for $1.2 million. At this time the Company cannot predict the outcome of its litigation with Civix, but the Company intends to vigorously defend itself against Civix’s claims.  While the Company believes it has meritorious defenses against Civix’s claims, the Company estimates that, based on the Company’s adjusted calculation of Civix’s alleged damages, the matter could result in a loss of up to $2.5 million in excess of the amount accrued.

Currently, and from time to time, the Company is involved in litigation incidental to the conduct of its business. In accordance with GAAP, the Company records a provision for a liability when it is both probable that a liability has been incurred and the amount can be reasonably estimated. At the present time, while it is reasonably possible that an unfavorable outcome may occur as a result of one or more of the Company’s current litigation matters, management has concluded that it is not probable that a loss has been incurred in connection with the Company’s current litigation other than as described above. In addition, other than as described above, the Company is unable to estimate the possible loss or range of loss that could result from an unfavorable outcome in the Company’s current litigation and accordingly, the Company has not recognized any liability in the condensed consolidated financial statements for unfavorable results, if any, other than described above. Legal defense costs are expensed as incurred.

19

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) — (CONTINUED)

10. SEGMENT REPORTING

The Company manages its business geographically in two operating segments, with the primary areas of measurement and decision-making being the U.S. and International, which includes the U.K. and France. The Company’s subscription-based information services consist primarily of CoStar Suite^TM and FOCUS^TM services. CoStar Suite is sold as a platform of service offerings consisting of CoStar Property Professional®, CoStar COMPS Professional®and CoStar Tenant® and through the Company's mobile application, CoStarGo®. CoStar Suite is the Company's primary service offering in the U.S. operating segment. FOCUS is the Company's primary service offering in the International operating segment. Additionally, the Company introduced CoStar Suite in the U.K. in the fourth quarter of 2012 and no longer offered FOCUS to new clients beginning in 2013. CoStar's and its subsidiaries' subscription-based services consist primarily of similar services offered over the Internet to commercial real estate industry and related professionals. Management relies on an internal management reporting process that provides revenue and operating segment EBITDA, which is the Company's net income (loss) before interest, income taxes, depreciation and amortization. Management believes that operating segment EBITDA is an appropriate measure for evaluating the operational performance of the Company's operating segments. EBITDA is used by management to internally measure operating and management performance and to evaluate the performance of the business. However, this measure should be considered in addition to, not as a substitute for or superior to, income from operations or other measures of financial performance prepared in accordance with GAAP.

Summarized information by operating segment consists of the following (in thousands):

	Three Months Ended March 31,
	2014		2013
Revenues
United States	$	113,326	$	99,296
International
External customers	5,750		4,737
Intersegment revenue	—		116
Total international revenue	5,750		4,853
Intersegment eliminations	—		(116		)
Total revenues	$	119,076	$	104,033
EBITDA
United States	$	26,368	$	9,286
International	624		(1,718		)
Total EBITDA	$	26,992	$	7,568

Reconciliation of EBITDA to net income (loss)
EBITDA	$	26,992		$	7,568
Purchase amortization in cost of revenues	(2,877		)	(3,027		)
Purchase amortization in operating expenses	(3,299		)	(4,125		)
Depreciation and other amortization	(3,675		)	(3,014		)
Interest income	137			104
Interest expense	(1,615		)	(1,755		)
Income tax expense, net	(5,923		)	1,839
Net income (loss)	$	9,740		$	(2,410	)

Intersegment revenue is attributable to services performed for the Company’s wholly owned subsidiary, Property and Portfolio Research (“PPR”) by Property and Portfolio Research Ltd., a wholly owned subsidiary of PPR. Intersegment revenue is recorded at an amount the Company believes approximates fair value. U.S. EBITDA includes a corresponding cost for the services performed by Property and Portfolio Research Ltd. for PPR.

20

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) — (CONTINUED)

10. SEGMENT REPORTING — (CONTINUED)

U.S. EBITDA includes an allocation of approximately $400,000 for the three months ended March 31, 2014. This allocation represents costs incurred for International employees involved in development activities of the Company's U.S. operating segment. There were no costs allocated to U.S. EBITDA for the three months ended March 31, 2013.

International EBITDA includes a corporate allocation of approximately $100,000 for each of the three months ended March 31, 2014 and 2013. This allocation represents costs incurred for U.S. employees involved in management and expansion activities of the Company's International operating segment.

Summarized information by operating segment consists of the following (in thousands):

	March 31, 2014			December 31, 2013
Property and equipment, net
United States	$	53,670		$	53,733
International	3,668			3,986
Total property and equipment, net	$	57,338		$	57,719
Goodwill
United States	$	692,639		$	692,639
International	26,185			25,948
Total goodwill	$	718,824		$	718,587
Assets
United States	$	1,298,378		$	1,311,292
International	44,163			43,464
Total operating segment assets	$	1,342,541		$	1,354,756
Reconciliation of operating segment assets to total assets
Total operating segment assets	$	1,342,541		$	1,354,756
Investment in subsidiaries	(18,344		)	(18,344		)
Intersegment receivables	(79,401		)	(79,430		)
Total assets	$	1,244,796		$	1,256,982
Liabilities
United States	$	310,048		$	324,626
International	80,289			79,266
Total operating segment liabilities	$	390,337		$	403,892
Reconciliation of operating segment liabilities to total liabilities
Total operating segment liabilities	$	390,337		$	403,892
Intersegment payables	(75,334		)	(74,772		)
Total liabilities	$	315,003		$	329,120

21

COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) — (CONTINUED)

11. PENDING ACQUISITION

On February 28, 2014, the Company and Classified Ventures, LLC (“CV”) entered into an Asset Purchase Agreement (the “Asset Purchase Agreement”). Pursuant to the Asset Purchase Agreement, the Company agreed to purchase from CV certain assets and assume certain liabilities, in each case, related to the Apartments.com business for $585.0 million in cash, subject to a customary working capital adjustment. The boards of directors of both companies unanimously approved the transaction.

The completion of the acquisition is subject to customary conditions, including, among others, the expiration or termination of any applicable waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended. The transaction is not subject to a financing condition.

The Asset Purchase Agreement may be terminated by both the Company and CV under certain circumstances, including if the acquisition is not consummated by August 28, 2014. The Asset Purchase Agreement contains certain termination rights for both the Company and CV, and further provides that, upon the termination of the Asset Purchase Agreement under specified circumstances in which certain antitrust approvals are not obtained or a governmental order related to antitrust or competition matters prohibits the consummation of the acquisition, the Company will be required to pay to CV a cash termination fee of $17.6 million.

In connection with the acquisition, JPMorgan Chase Bank, N.A., Bank of America, N.A., SunTrust Bank and Wells Fargo Bank, National Association committed to provide the Company with a $400.0 million senior secured term loan facility (the “Initial Term Facility”) and a $225.0 million senior secured revolving credit facility (the “Revolving Facility” and, collectively with the Initial Term Facility, the “Credit Facilities”), on the terms and subject to the conditions set forth in a debt commitment letter dated February 28, 2014. The proceeds of the Credit Facilities, together with cash on hand, will be used to finance the consideration due to CV under the Asset Purchase Agreement, to pay all principal, accrued and unpaid interest, fees, premiums, if any, and other amounts due under the 2012 Credit Agreement, to fund any original issue discount or upfront fees to the extent permitted and, in the case of the Revolving Facility, for working capital and other general corporate purposes. The Initial Term Facility will mature on the date that is five years after the completion of the acquisition and will amortize in quarterly installments equal to 5% of the original principal amount of the Initial Term Facility during each of the first, second and third years, 10% during the fourth year, and 15% during the fifth year, with the remainder payable at final maturity. The Revolving Facility will mature and terminate five years after the completion of the acquisition. The Company’s obligations under the Credit Facilities will be guaranteed (subject to certain exceptions) on a senior basis by each existing and subsequently acquired or organized direct or indirect wholly-owned restricted subsidiary of the Company (the “Subsidiary Guarantors”) and will be secured (subject to permitted liens and other agreed upon exceptions) on a first priority basis by a security interest in substantially all of the assets of CoStar and the Subsidiary Guarantors and a pledge of 100% (subject to certain exceptions) of the equity interests in each direct restricted subsidiary of Costar and each Subsidiary Guarantor.

As a result of the pending acquisition of the Apartments.com business, the Company recorded approximately $1.1 million in acquisition-related costs for the three months ended March 31, 2014. The Company is not in a position yet to estimate with certainty the financial impact the proposed acquisition will have on its operations. See Note 12 for further details regarding the closing of the acquisition of the Apartments.com business on April 1, 2014 as well as the repayment and termination of the 2012 Credit Agreement and the term loan facility and revolving credit facility provided to the Company on April 1, 2014.

12. SUBSEQUENT EVENTS

As discussed in Note 11, on February 28, 2014, the Company and CV entered into the Asset Purchase Agreement. Pursuant to the Asset Purchase Agreement, on April 1, 2014 (the “Closing Date”), the Company purchased from CV certain assets and assumed certain liabilities, in each case, related to the Apartments.com business (collectively, the “Business”) for $585.0 million in cash, subject to a customary working capital adjustment. The purchase price paid at closing was $587.1 million, which reflected an estimated $2.1 million increase in net working capital of the Business as of the closing date over the threshold net working capital amount; this amount is subject to further adjustment once the final net working capital of the Business as of the closing date is determined. The Company is not in a position yet to estimate with certainty the financial impact the acquisition will have on its operations.

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COSTAR GROUP, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) — (CONTINUED)

12. SUBSEQUENT EVENTS — (CONTINUED)

On the Closing Date, the Company entered into a Credit Agreement (the “2014 Credit Agreement”) by and among CoStar, as Borrower, CoStar Realty Information, Inc., as Co-Borrower, the Lenders from time to time party thereto and JPMorgan Chase Bank, N.A., as Administrative Agent. The 2014 Credit Agreement provides for a $400.0 million term loan facility and a $225.0 million revolving credit facility, each with a term of five years. The proceeds of the term loan facility and the initial borrowing under the revolving credit facility on the Closing Date in an amount of $150.0 million were used to refinance the 2012 Credit Agreement, including related fees and expenses, and pay a portion of the consideration and transaction costs related to the acquisition. The undrawn proceeds of the revolving credit facility will be available for working capital and other general corporate purposes of CoStar and its subsidiaries.

Effective April 1, 2014, the Company terminated the 2012 Credit Agreement and repaid all amounts outstanding thereunder. The Company evaluated the debt modification and determined that the modification did not qualify as an extinguishment of debt because the change in the present value of future cash flows between the initial term loan facility and the new term loan facility was not considered a substantial modification.

The revolving credit facility includes a subfacility for swingline loans of up to $10.0 million, and up to $10.0 million of the revolving credit facility is available for the issuance of letters of credit. The term loan facility will amortize in quarterly installments in amounts resulting in an annual amortization of 5% during each of the first, second and third years, 10% during the fourth year and 15% during the fifth year after the Closing Date, with the remainder payable at final maturity. The loans under the 2014 Credit Agreement bear interest, at the option of CoStar, either (i) during any interest period selected by CoStar, at the London interbank offered rate for deposits in U.S. dollars with a maturity comparable to such interest period, adjusted for statutory reserves (“LIBOR”), plus an initial spread of 2.00% per annum, subject to adjustment based on the First Lien Secured Leverage Ratio (as defined in the 2014 Credit Agreement) of the Company, or (ii) at the greatest of (x) the prime rate from time to time announced by JPMorgan Chase Bank, N.A., (y) the federal funds effective rate plus ½ of 1% and (z) LIBOR for a one-month interest period plus 1.00%, plus an initial spread of 1.00% per annum, subject to adjustment based on the First Lien Secured Leverage Ratio of the Company. If an event of default occurs under the 2014 Credit Agreement, the interest rate on overdue amounts will increase by 2.00% per annum. The obligations under the 2014 Credit Agreement are guaranteed by all material subsidiaries of CoStar and are secured by a lien on substantially all of the assets of CoStar and its material subsidiaries, in each case subject to certain exceptions, pursuant to security and guarantee documents entered into on the Closing Date.

The 2014 Credit Agreement requires the Company to maintain (i) a First Lien Secured Leverage Ratio not exceeding 4.00 to 1.00 during the first eight full fiscal quarters after the Closing Date, and 3.50 to 1.00 thereafter and (ii) after the incurrence of additional indebtedness under certain specified exceptions in the 2014 Credit Agreement, a Total Leverage Ratio (as defined in the 2014 Credit Agreement) not exceeding 5.00 to 1.00 during the first eight full fiscal quarters after the Closing Date, and 4.50 to 1.00 thereafter. The 2014 Credit Agreement also includes other covenants, including covenants that, subject to certain exceptions, restrict the ability of the Company and its subsidiaries to (i) incur additional indebtedness, (ii) create, incur, assume or permit to exist any liens, (iii) enter into mergers, consolidations or similar transactions, (iv) make investments and acquisitions, (v) make certain dispositions of assets, (vi) make dividends, distributions and prepayments of certain indebtedness, and (vii) enter into certain transactions with affiliates.

In connection with obtaining the term loan facility and revolving credit facility pursuant to the 2014 Credit Agreement, the Company incurred approximately $10.4 million in debt issuance costs as of April 1, 2014. The debt issuance costs were comprised of approximately $9.7 million in underwriting fees and approximately $700,000 primarily related to legal fees associated with the debt issuance. Approximately $10.2 million of the fees associated with the refinancing, along with the unamortized debt issuance cost from the 2012 Credit Agreement are capitalized and amortized as interest expense over the term of the 2014 Credit Agreement using the effective interest method. 

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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following Management's Discussion and Analysis of Financial Condition and Results of Operations contains “forward-looking statements,” including statements about our beliefs and expectations. See “Cautionary Statement Concerning Forward-Looking Statements” at the end of this Item 2. for additional factors relating to such statements, and see “Risk Factors” in Item 1A. of Part II of this Quarterly Report on Form 10-Q for a discussion of certain risk factors applicable to our business, financial condition and results of operations.

All forward-looking statements are based on information available to us on the date of this filing and we assume no obligation to update such statements, whether as a result of new information, future events or otherwise. The following discussion should be read in conjunction with our Annual Report on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and other filings with the Securities and Exchange Commission and the condensed consolidated financial statements and related notes included in this Quarterly Report on Form 10-Q.

Overview

CoStar Group, Inc. (the “Company” or “CoStar”) is the number one provider of information, analytics and marketing services to the commercial real estate industry in the United States ("U.S.") and the United Kingdom ("U.K.") based on the fact that we offer the most comprehensive commercial real estate database available; have the largest research department in the industry; own and operate the leading online marketplace for commercial real estate in the U.S. based on the number of unique visitors per month; provide more information, analytics and marketing services than any of our competitors and believe that we generate more revenues than any of our competitors. We have created and compiled our standardized information, analytics and marketing platform where members of the commercial real estate and related business community can continuously interact and facilitate transactions by efficiently exchanging accurate and standardized commercial real estate information. Our integrated suite of online service offerings includes information about space available for lease, comparable sales information, information about properties for sale, tenant information, internet marketing services, analytical capabilities, information for clients' websites, information about industry professionals and their business relationships, data integration and industry news.

LoopNet, our subsidiary, operates an online marketplace that enables commercial property owners, landlords, and real estate agents working on their behalf to list properties for sale or for lease and to submit detailed information about property listings. Commercial real estate agents, buyers and tenants also use LoopNet's online marketplace to search for available property listings that meet their criteria.

We also provide market research and analysis for commercial real estate investors and lenders via our Property and Portfolio Research (“PPR”) service offerings, portfolio and debt management and reporting capabilities through our Resolve Technology service offerings, and real estate and lease management solutions, including lease administration and abstraction services, through our Virtual Premise service offerings.

Our service offerings span all commercial property types, including office, industrial, retail, land, mixed-use, hospitality and multifamily.

Subscription-Based Services

Our subscription-based information services consist primarily of CoStar Suite^TM and FOCUS^TM services. CoStar Suite is sold as a platform of service offerings consisting of CoStar Property Professional®, CoStar COMPS Professional®and CoStar Tenant® and through our mobile application, CoStarGo®. CoStar Suite is our primary service offering in our U.S. operating segment. FOCUS is our primary service offering in our International operating segment. Additionally, we introduced CoStar Suite in the U.K. in the fourth quarter of 2012 and no longer offered FOCUS to new clients beginning in 2013.

Our subscription-based services consist primarily of similar services offered over the Internet to commercial real estate industry and related professionals. Our services are typically distributed to our clients under subscription-based license agreements that renew automatically, a majority of which have a term of one year. Upon renewal, many of the subscription contract rates may change in accordance with contract provisions or as a result of contract renegotiations. To encourage clients to use our services regularly, we generally charge a fixed monthly amount for our subscription-based information services rather than charging fees based on actual system usage. Contract rates are generally based on the number of sites, number of users, organization size, the client's business focus, geography and the number of services to which a client subscribes. Our subscription clients generally pay contract fees on a monthly basis, but in some cases may pay us on a quarterly or annual basis.

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As of March 31, 2014 and 2013, our annualized net new sales of subscription-based services on annual contracts were approximately $14.7 million and $14.8 million, respectively, calculated based on the annualized amount of change in our sales resulting from new annual subscription-based contracts or upsales on existing annual subscription-based contracts, less write downs and cancellations, for the period reported. We recognize subscription revenue on a straight-line basis over the life of the contract. Annual and quarterly advance payments result in deferred revenue, substantially reducing the working capital requirements generated by accounts receivable.

For the twelve months ended March 31, 2014 and 2013, our contract renewal rate for existing CoStar subscription-based services was approximately 93% and 94%, respectively, and therefore our cancellation rate for those services was approximately 7% and 6%, respectively, for the same time periods. Our contract renewal rate is a quantitative measurement that is typically closely correlated with our revenue results. As a result, management also believes that the rate may be a reliable indicator of short-term and long-term performance. Our trailing twelve-month contract renewal rate may decline if, among other reasons, negative economic conditions lead to greater business failures and/or consolidations among our clients, reductions in customer spending, or decreases in our customer base.

Expansion and Development

We expect to continue software development to improve existing services, introduce new services, integrate products and services, cross-sell existing services, and expand and develop supporting technologies for our research, sales and marketing organizations. We are committed to supporting and improving our existing core information, news, analytic and marketing services.

In October 2013, we introduced technology enhancements to CoStar Suite, our platform of service offerings consisting of CoStar Property Professional, CoStar COMPS Professionaland CoStar Tenant. The enhancements improve CoStar Suite's user interface, search functionality and analytic capabilities. The CoStar Multifamily^TM information search included in the technology enhancements allows access to our extensive multifamily property database. In addition, CoStar Lease Analysis^TM, an integrated workflow tool, provides users a simple way to produce understandable cash flows for any proposed or existing lease. We will continue software development on our new Lease Analysis workflow tool throughout 2014. We believe this greater functionality will make our services valuable to an even broader audience and help us increase sales of our services to brokers, banks, owners and institutional investors. Further, these technology enhancements are expected to drive continued revenue growth during the remainder of 2014 and for the foreseeable future. We expect additional selling and marketing activities to promote our new service enhancements will result in increased expenses during the remainder of 2014.

In October 2013, we also released CoStarGo® 2.0, the next generation of our mobile application, which was launched in the U.S. on August 15, 2011 and introduced in the U.K. on November 5, 2012. CoStarGo is our iPad application that integrates and provides CoStar Suite subscribers mobile access to our comprehensive property, tenant and comparable sales information. CoStarGo 2.0 adds powerful analytic capabilities to our comprehensive mobile solution.

We have introduced enhancements to our flagship marketing platform, LoopNet.com. For example, we added a broker advertising service that allows brokers to purchase advertisements based on geographic and property type criteria. Additionally, we introduced ProVideo, a service that enables owners and brokers to enhance their listings with high quality videos of interior spaces, amenities and exterior features. We expect to continue software development to improve the LoopNet marketing platform during the remainder of 2014.

We continue to integrate, develop and cross-sell the services offered by the companies we acquired, including LoopNet, Virtual Premise, Resolve Technology and PPR. In some cases, when integrating and coordinating our services and assessing industry needs, we may decide, or may have previously decided, to combine, shift focus from, de-emphasize, phase out, or eliminate a service that overlaps or is redundant with other services we offer.

Our sales and marketing efforts have focused and will continue to focus on cross-selling and marketing our services. Our goal is to upsell clients to the services that best meet their needs and to create further cross-selling revenue synergies.

Our revenues have increased as a result of the LoopNet merger and prior acquisitions, due to revenue from the acquired businesses and from cross-selling opportunities among the customers of CoStar and the acquired companies. As a result of cross selling CoStar's and LoopNet's complementary services, we began to achieve increased revenue synergies in 2013. We also incurred increased expenses associated with the related marketing and sales campaign in 2012 and during the first half of 2013. These initiatives resulted in revenue growth, and we expect they will continue to position the company for revenue growth during the remainder of 2014 and for the foreseeable future.

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We continue to integrate our international operations more fully with those in the U.S. We intend to continue to upgrade the platform of services and expand the coverage of our service offerings within our International segment. To further develop those initiatives, we introduced CoStar Suite in the U.K. during the fourth quarter of 2012 and no longer offered FOCUS to new clients beginning in 2013. CoStar Suite is sold as a consistent international platform of service offerings consisting of CoStar Property Professional, CoStar COMPS Professionaland CoStar Tenant and through the Company's mobile application, CoStarGo. CoStarGo 2.0 was released in the U.K. in October 2013 simultaneous with the release in the U.S. Additionally, we have upgraded our back-end research operations, fulfillment and Customer Relationship Management (“CRM”) systems to support these new U.K. services. The International operating segment continues to experience improved financial performance. During the three months ended December 31, 2013, International EBITDA increased to a positive amount and remained a positive amount for the three months ended March 31, 2014 as a result of increased revenue and decreased operating expenses.

In 2014, we began offering our services in Toronto, Canada. We believe that our integration efforts and continued investments in our services, including expansion of our existing service offerings internationally, have created a platform for long-term revenue growth. We expect these investments to result in further penetration of our international subscription-based information services and the successful cross-selling of our services to customers in existing markets.

We intend to continue to assess the need for additional investments in our business, in addition to the investments discussed above in order to develop and distribute new services within our current platform. Any future product development or expansion of services, combination and coordination of services or elimination of services could reduce our profitability and increase our capital expenditures. Therefore, while we expect current service offerings to remain profitable, driving overall earnings in 2014 and providing substantial cash flow for our business, it is possible that any new investments, changes to our service offerings or other unforeseen events could cause us to generate losses and negative cash flow from operations in the future. Further, our credit facilities contain restrictive covenants that restrict our operations and use of our cash flow, which may prevent us from taking certain actions that we believe could increase our profitability or otherwise enhance our business.

Recent Acquisition

Most recently, we decided to increase our presence in the multi-family vertical by acquiring the Apartments.com business, a national online apartment rentals resource for renters, property managers and owners. Apartments.com offers renters a database of apartment listings and provides professional property management companies and landlords with an advertising destination. Renters can conduct personalized searches of apartment listings and view video demonstrations and community reviews through the Apartments.com website and mobile applications. The Apartments.com network of rental websites also includes ApartmentHomeLiving.com, another, national online apartment rentals resource, and RentalHomesPlus.com, a national online rental homes guide.

On April 1, 2014 (the “Closing Date”), we purchased from Classified Ventures, LLC certain assets and assumed certain liabilities, in each case, related to the Apartments.com business (collectively, the “Business”) for $585.0 million in cash, subject to a customary working capital adjustment. The purchase price paid at closing was $587.1 million, which reflected an estimated $2.1 million increase in net working capital of the Business as of the closing date over the threshold net working capital amount; this amount is subject to further adjustment once the final net working capital of the Business as of the closing date is determined.

On the Closing Date, we also entered into a Credit Agreement (the “2014 Credit Agreement”) by and among CoStar, as Borrower, CoStar Realty Information, Inc., as Co-Borrower, the Lenders from time to time party thereto and JPMorgan Chase Bank, N.A., as Administrative Agent. The 2014 Credit Agreement provides for a $400.0 million term loan facility and a $225.0 million revolving credit facility, each with a term of five years. The proceeds of the term loan facility and the initial borrowing under the revolving credit facility on the Closing Date in an amount of $150.0 million were used to refinance the term loan facility and revolving credit facility established under a credit agreement dated February 16, 2012 (the “2012 Credit Agreement”), including related fees and expenses, and pay a portion of the consideration and transaction costs related to the acquisition. The undrawn proceeds of the revolving credit facility will be available for our working capital and other general corporate purposes. The obligations under the 2014 Credit Agreement are guaranteed by all of our material subsidiaries and are secured by a lien on substantially all of our assets and our material subsidiaries, in each case subject to certain exceptions, pursuant to security and guarantee documents entered into on the Closing Date.

Similar to past acquisitions, we plan to integrate, further develop and cross-sell the services offered by Apartments.com and the other services we offer. We also plan to incur product development costs to improve the online Apartments.com platform, as well as increase our sales and marketing expenses in order to support the Apartments.com business and to increase brand awareness.

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Market Conditions

In general, the current economic recovery has been slower than past economic recoveries. Job growth, in particular, has recovered more slowly than in past economic recoveries, and as a result, the improvement in the commercial real estate industry has been slower, especially with respect to the rental rate growth.  Continuing near-term risks related to lower-than-expected job growth, government fiscal challenges, and uncertainty over U.S. and global economic issues may impede the ability and willingness of clients to purchase services from us or result in reductions of services purchased. Additionally, since many of our clients use debt to finance a portion of their real estate purchases, material changes in interest rates and risk premiums could harm their ability to complete transactions, especially if the change was relatively rapid and unexpected.

As is typical of this point in the economic cycle, business consolidations, and in some circumstances, business failures, continue to occur. If cancellations, reductions of services, and failures to pay increase, and we are unable to offset the resulting decrease in revenue by increasing sales to new or existing customers, our revenues may decline or grow at lower rates. We compete against many other commercial real estate information, analytics, and marketing service providers for business, including competitors that offer rapidly changing methods of delivering real estate information. If customers choose to cancel our services because of cost cutting, desire to access real estate information through other delivery methods, or other reasons, our revenue could decline.

Financial Matters

Our financial reporting currency is the U.S. dollar. Changes in exchange rates can significantly affect our reported results and consolidated trends. We believe that our increasing diversification beyond the U.S. economy through our international businesses benefits our stockholders over the long term. We also believe it is important to evaluate our operating results before and after the effect of currency changes, as it may provide a more accurate comparison of our results of operations over historical periods. Currency exchange rate volatility may continue, which may impact (either positively or negatively) our reported financial results and consolidated trends and period-to-period comparisons of our consolidated operations.

We currently issue stock options and/or restricted stock to our officers, directors and employees, and as a result we record compensation expense in our consolidated statements of operations. The amount and timing of the compensation expense that we record depends on the amount and types of equity grants made. We plan to continue to use stock-based compensation for our officers, directors and employees, which may include, among other things, restricted stock, restricted stock units or stock option grants that typically will require us to record additional compensation expense in our consolidated statements of operations and reduce our net income. Grants of equity awards may vest over time or based on achievement of pre-approved performance conditions.

In February 2012, the Compensation Committee (the “Committee”) of the Board of Directors approved grants of restricted common stock to our executive officers that vest based on the achievement of CoStar performance conditions. These shares of performance-based restricted common stock granted in February 2012 were subject to vesting based upon our achievement of $90.0 million of cumulative net income before interest, income taxes, depreciation and amortization ("EBITDA") over a period of four consecutive calendar quarters, and were subject to forfeiture in the event the foregoing performance condition was not met by March 31, 2017. In May and December of 2012, we granted additional shares of restricted common stock that vest based on the achievement of the same performance conditions as the February 2012 grants to other key employees, subject to certain approvals under the CoStar Group, Inc. 2007 Stock Incentive Plan. We granted a total of 399,413 shares of performance-based restricted common stock during the year ended December 31, 2012. All of the awards were made under the CoStar Group, Inc. 2007 Stock Incentive Plan and pursuant to our standard form of restricted stock grant agreement. As of March 31, 2014, the Company had satisfied all performance and service conditions and as a result, the restricted common stock granted under these awards vested. We recorded approximately $2.2 million and $11.3 million of stock-based compensation expense related to the performance-based restricted common stock for the three months ended March 31, 2014 and 2013, respectively.

The Committee expects to grant other performance-based equity awards in the future under the Company’s 2007 Stock Incentive Plan.

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Application of Critical Accounting Policies and Estimates

The preparation of financial statements and related disclosures in conformity with U.S. generally accepted accounting principles (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and revenues and expenses during the period reported. The following accounting policies involve a “critical accounting estimate” because they are particularly dependent on estimates and assumptions made by management about matters that are highly uncertain at the time the accounting estimates are made. In addition, while we have used our best estimates based on facts and circumstances available to us at the time, different acceptable assumptions would yield different results. Changes in the accounting estimates are reasonably likely to occur from period to period, which may have a material impact on the presentation of our financial condition and results of operations. We review these estimates and assumptions periodically and reflect the effects of revisions in the period that they are determined to be necessary.

Fair Value of Auction Rate Securities

Fair value is defined as the price that would be received in the sale of an asset or paid to transfer a liability in an orderly transaction between market participants. There is a three-tier fair value hierarchy, which categorizes assets and liabilities by the inputs used in measuring fair value. These tiers include: Level 1, defined as observable inputs such as quoted prices in active markets; Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable; and Level 3, defined as unobservable inputs for which little or no market data exists, therefore requiring an entity to develop its own assumptions. Our Level 3 assets consist of auction rate securities (“ARS”), whose underlying assets are primarily student loan securities supported by guarantees from the Federal Family Education Loan Program (“FFELP”) of the U.S. Department of Education.

Our ARS investments are not currently actively trading and therefore do not currently have a readily determinable market value. The estimated fair value of the ARS no longer approximates par value. We have used a discounted cash flow model to determine the estimated fair value of our investment in ARS as of March 31, 2014. The assumptions used in preparing the discounted cash flow model include estimates for interest rates, credit spreads, timing and amount of contractual cash flows, liquidity risk premiums, expected holding periods and default risk of the ARS. We update the discounted cash flow model on a quarterly basis to reflect any changes in the assumptions used in the model and settlements of ARS investments that occurred during the period.

The only significant unobservable input in the discounted cash flow model is the discount rate. The discount rate used represents our estimate of the yield expected by a market participant from the ARS investments. The weighted average discount rate used in the discounted cash flow model as of March 31, 2014 and December 31, 2013 was approximately 4.9%. Selecting another discount rate within the range used in the discounted cash flow model would not result in a significant change to the fair value of the ARS.

Based on this assessment of fair value, as of March 31, 2014, we determined there was a decline in the fair value of our ARS investments of approximately $1.3 million. The decline was deemed to be a temporary impairment and recorded as an unrealized loss in accumulated other comprehensive loss in stockholders' equity. If the issuers of these ARS are unable to successfully close future auctions and/or their credit ratings deteriorate, we may be required to record additional unrealized losses in accumulated other comprehensive loss or an other-than-temporary impairment charge to earnings on these investments, which would reduce our profitability and adversely affect our financial position.

We have not made any material changes in the accounting methodology used to determine the fair value of the ARS. We do not expect any material changes in the near term to the underlying assumptions used to determine the unobservable inputs used to calculate the fair value of the ARS as of March 31, 2014. However, if changes in these assumptions occur, and, should those changes be significant, we may be exposed to additional unrealized losses in accumulated other comprehensive loss or an other-than-temporary impairment charge to earnings on these investments.

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Stock-Based Compensation

We account for equity instruments issued in exchange for employee services using a fair-value based method, and we recognize the fair value of such equity instruments as an expense in the consolidated statements of operations. We estimated the fair value of each option granted on the date of grant using the Black-Scholes option-pricing model, which requires us to estimate the dividend yield, expected volatility, risk-free interest rate and expected life of the stock option. For equity instruments that vest based on a market condition, we estimate the fair value of each equity instruments granted on the date of grant using a Monte-Carlo simulation model, which also requires us to estimate the dividend yield, expected volatility, risk-free interest rate and expected life of the equity instruments. These assumptions and the estimation of expected forfeitures are based on multiple factors, including historical employee behavior patterns of exercising options and post-employment termination behavior, expected future employee option exercise patterns, and the historical volatility of our stock price. For equity instruments that vest based on performance, we assess the probability of the achievement of the performance conditions at the end of each reporting period, or more frequently based upon the occurrence of events that may change the probability of whether the performance conditions would be met. If our initial estimates of the achievement of the performance conditions change, the related stock-based compensation expense and timing of recognition 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.

We do not expect any material changes in the near term to the underlying assumptions used to calculate stock-based compensation expense for the three months ended March 31, 2014. However, if changes in these assumptions occur, and, should those changes be significant, they could have a material impact on our stock-based compensation expense.

Valuation of Long-Lived and Intangible Assets and Goodwill

We assess the impairment of long-lived assets, identifiable intangibles and goodwill whenever events or changes in circumstances indicate that the carrying value may not be recoverable. Judgments made by management relate to the expected useful lives of long-lived assets and our ability to realize any undiscounted cash flows of the carrying amounts of such assets. The accuracy of these judgments may be adversely affected by several factors, including the factors listed below:

•     Significant underperformance relative to historical or projected future operating results;

•     Significant changes in the manner of our use of the acquired assets or the strategy for our overall business;

•     Significant negative industry or economic trends; or

•     Significant decline in our market capitalization relative to net book value for a sustained period.

When we determine that the carrying value of long-lived and identifiable intangible assets may not be recovered based upon the existence of one or more of the above indicators, we test for impairment.

Goodwill and identifiable intangible assets that are not subject to amortization are tested annually for impairment by each reporting unit on October 1 of each year and are also tested for impairment more frequently based upon the existence of one or more of the above indicators. We consider our operating segments, U.S. and International, as our reporting units under Financial Accounting Standards Board (“FASB”) authoritative guidance for consideration of potential impairment of goodwill.

To determine whether it is necessary to perform the two-step goodwill impairment test, we 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. If we conclude that it is more likely than not that the fair value of a reporting unit is less than its carrying amount or if we elect not to assess qualitative factors, then we perform the two-step process. The first step is to determine the fair value of each reporting unit. We estimate the fair value of each reporting unit based on a projected discounted cash flow model that includes significant assumptions and estimates including our 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 our forecasts, business plans, economic projections and anticipated future cash flows. Our assumptions regarding the future financial performance of the International reporting unit reflect our expectation as of October 1, 2013, that revenues will increase as a result of further penetration of our international subscription-based information services and the successful cross-selling of our services to our customers in existing markets due to the release of our upgraded international platform and expansion of coverage of our international service offerings. These assumptions are subject to change from period to period and could be adversely impacted by the uncertainty surrounding global market conditions, commercial real estate conditions, and the competitive environment in which we operate. Changes in these or other factors could negatively affect our reporting units' fair value and potentially result in impairment charges. Such impairment charges could have an adverse effect on our results of operations.

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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 the second step of the process is performed to measure the impairment loss. We measure impairment loss based on a projected discounted cash flow method using a discount rate determined by our management to be commensurate with the risk in our current business model. As of October 1, 2013, the date of our most recent impairment analysis, the estimated fair value of each of our reporting units substantially exceeded the carrying value of our reporting units. There have been no events or changes in circumstances since the date of our impairment analysis on October 1, 2013 that would indicate that the carrying value of each reporting unit may not be recoverable.

To determine whether it is necessary to perform the quantitative impairment test for indefinite-lived intangible assets, we may first assess qualitative factors to evaluate whether it is more likely than not that the fair value of the indefinite-lived intangible assets is less than the carrying amount. If we conclude that it is more likely than not that the fair value of the indefinite-lived intangible assets is less than the carrying amount or if we elect not to assess qualitative factors, then we perform the quantitative impairment test similar to the test performed on goodwill discussed above.

As of October 1, 2013, the date of our most recent impairment analysis, the estimated fair value of our indefinite-lived intangible assets substantially exceeded the carrying value. There have been no events or changes in circumstances since the date of our impairment analysis on October 1, 2013 that would indicate that the carrying value of the indefinite-lived intangible asset may not be recoverable.

We recently finalized a branding initiative plan that includes, among other things, re-branding some of the services provided by our wholly owned subsidiaries, in order to better organize, update, streamline and optimize our branding strategy. We expect to launch the branding initiative externally in the second quarter of 2014. Following the external launch of the branding initiative, we intend to cease using certain of our trade names. We evaluated the assets for impairment and determined that the carrying value of certain trade names exceeded the fair value. We recorded an impairment charge of approximately $1.1 million in cost of revenues in the condensed consolidated statements of operations within our operating segment. The adjusted carrying value of our trade name intangible assets associated with the branding initiative will be amortized through the date of the external launch of the branding initiative.

Accounting for Income Taxes

As part of the process of preparing our condensed consolidated financial statements, we are required to estimate our income taxes in each of the jurisdictions in which we operate. This process requires us to estimate our actual current tax exposure and assess the temporary differences resulting from differing treatment of items, such as deferred revenue or deductibility of certain intangible assets, for tax and accounting purposes. These differences result in deferred tax assets and liabilities, which are included within our condensed consolidated balance sheets. We must then also assess the likelihood that our deferred tax assets will be recovered from future taxable income, and, to the extent we believe that it is more-likely-than not that some portion or all of our deferred tax assets will not be realized, we must establish a valuation allowance. To the extent we establish a valuation allowance or change the allowance in a period, we must reflect the corresponding increase or decrease within the tax provision in the condensed consolidated statements of operations.

Non-GAAP Financial Measures

We prepare and publicly release quarterly unaudited financial statements prepared in accordance with GAAP. We also disclose and discuss certain non-GAAP financial measures in our public releases, investor conference calls and filings with the Securities and Exchange Commission. The non-GAAP financial measures that we may disclose include EBITDA, adjusted EBITDA, non-GAAP net income and non-GAAP net income per diluted share (also referred to as "non-GAAP EPS"). EBITDA is our net income (loss) before interest, income taxes, depreciation and amortization. We typically disclose EBITDA on a consolidated and an operating segment basis in our earnings releases, investor conference calls and filings with the Securities and Exchange Commission. Adjusted EBITDA is different from EBITDA because we further adjust EBITDA for stock-based compensation expense, acquisition- and integration-related costs, restructuring costs and settlements and impairments incurred outside our ordinary course of business. Non-GAAP net income and non-GAAP net income per diluted share are similarly adjusted for stock-based compensation expense, acquisition- and integration-related costs, restructuring costs, settlement and impairment costs incurred outside our ordinary course of business as well as purchase amortization and other related costs. We may disclose adjusted EBITDA, non-GAAP net income and non-GAAP net income per diluted share on a consolidated basis in our earnings releases, investor conference calls and filings with the Securities and Exchange Commission. The non-GAAP financial measures that we use may not be comparable to similarly titled measures reported by other companies. Also, in the future, we may disclose different non-GAAP financial measures in order to help our investors more meaningfully evaluate and compare our results of operations to our previously reported results of operations or to those of other companies in our industry.

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We view EBITDA, adjusted EBITDA, non-GAAP net income and non-GAAP net income per diluted share as operating performance measures and as such we believe that the most directly comparable GAAP financial measure is net income (loss). In calculating EBITDA, adjusted EBITDA, non-GAAP net income and non-GAAP net income per diluted share, we exclude from net income (loss) the financial items that we believe should be separately identified to provide additional analysis of the financial components of the day-to-day operation of our business. We have outlined below the type and scope of these exclusions and the material limitations on the use of these non-GAAP financial measures as a result of these exclusions. EBITDA, adjusted EBITDA, non-GAAP net income and non-GAAP net income per diluted share are not measurements of financial performance under GAAP and should not be considered as a measure of liquidity, as an alternative to net income (loss) or as an indicator of any other measure of performance derived in accordance with GAAP. Investors and potential investors in our securities should not rely on EBITDA, adjusted EBITDA, non-GAAP net income and non-GAAP net income per diluted share as a substitute for any GAAP financial measure, including net income (loss). In addition, we urge investors and potential investors in our securities to carefully review the GAAP financial information included as part of our Annual Reports on Form 10-K and Quarterly Reports on Form 10-Q that are filed with the Securities and Exchange Commission, as well as our quarterly earnings releases, and compare the GAAP financial information with our EBITDA, adjusted EBITDA, non-GAAP net income and non-GAAP net income per diluted share.

EBITDA, adjusted EBITDA, non-GAAP net income and non-GAAP net income per diluted share may be used by management to internally measure our operating and management performance and may be used by investors as supplemental financial measures to evaluate the performance of our business. We believe that these non-GAAP measures, when viewed with our GAAP results and the accompanying reconciliation, provide additional information that is useful to understand the factors and trends affecting our business. We have spent more than 26 years building our database of commercial real estate information and expanding our markets and services partially through acquisitions of complementary businesses. Due to the expansion of our information, analytics and marketing services, which has included acquisitions, our net income (loss) has included significant charges for purchase amortization, depreciation and other amortization, acquisition- and integration-related costs and restructuring costs. Adjusted EBITDA, non-GAAP net income and non-GAAP net income per diluted share exclude these charges and provide meaningful information about the operating performance of our business, apart from charges for purchase amortization, depreciation and other amortization, acquisition- and integration-related costs, restructuring costs and settlement and impairment costs incurred outside our ordinary course of business. We believe the disclosure of non-GAAP measures can help investors meaningfully evaluate and compare our performance from quarter to quarter and from year to year. We also believe the non-GAAP measures we disclose are measures of our ongoing operating performance because the isolation of non-cash charges, such as amortization and depreciation, and other items, such as interest, income taxes, stock-based compensation expenses, acquisition- and integration-related costs, restructuring costs and settlement and impairment costs incurred outside our ordinary course of business, provides additional information about our cost structure, and, over time, helps track our operating progress. In addition, investors, securities analysts and others have regularly relied on EBITDA and may rely on adjusted EBITDA, non-GAAP net income or non-GAAP net income per diluted share to provide a financial measure by which to compare our operating performance against that of other companies in our industry.

Set forth below are descriptions of the financial items that have been excluded from our net income (loss) to calculate EBITDA and the material limitations associated with using this non-GAAP financial measure as compared to net income (loss):

• Purchase amortization in cost of revenues may be useful for investors to consider because it represents the use of our acquired database technology, which is one of the sources of information for our database of commercial real estate information. We do not believe these charges necessarily reflect the current and ongoing cash charges related to our operating cost structure.

• Purchase amortization in operating expenses may be useful for investors to consider because it represents the estimated attrition of our acquired customer base and the diminishing value of any acquired trade names. We do not believe these charges necessarily reflect the current and ongoing cash charges related to our operating cost structure.

• Depreciation and other amortization may be useful for investors to consider because they generally represent the wear and tear on our property and equipment used in our operations. We do not believe these charges necessarily reflect the current and ongoing cash charges related to our operating cost structure.

• The amount of interest income we generate may be useful for investors to consider and may result in current cash inflows. However, we do not consider the amount of interest income to be a representative component of the day-to-day operating performance of our business.

• The amount of interest expense we incur may be useful for investors to consider and may result in current cash outflows. However, we do not consider the amount of interest expense to be a representative component of the day-to-day operating performance of our business.

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• Income tax expense may be useful for investors to consider because it generally represents the taxes which may be payable for the period and the change in deferred income taxes during the period and may reduce the amount of funds otherwise available for use in our business. However, we do not consider the amount of income tax expense to be a representative component of the day-to-day operating performance of our business.

Set forth below are descriptions of the financial items that have been excluded from our net income (loss) to calculate adjusted EBITDA and the material limitations associated with using this non-GAAP financial measure as compared to net income (loss):

• Purchase amortization in cost of revenues, purchase amortization in operating expenses, depreciation and other amortization, interest income, interest expense, and income tax expense as previously described above with respect to the calculation of EBITDA.

• Stock-based compensation expense may be useful for investors to consider because it represents a portion of the compensation of our employees and executives. Determining the fair value of the stock-based instruments involves a high degree of judgment and estimation and the expenses recorded may bear little resemblance to the actual value realized upon the future exercise or termination of the related stock-based awards. Therefore, we believe it is useful to exclude stock-based compensation in order to better understand the long-term performance of our core business.

• The amount of acquisition- and integration-related costs incurred may be useful for investors to consider because they generally represent professional service fees and direct expenses related to the acquisition. Because we do not acquire businesses on a predictable cycle we do not consider the amount of acquisition- and integration-related costs to be a representative component of the day-to-day operating performance of our business.

• The amount of restructuring costs incurred may be useful for investors to consider because they generally represent costs incurred in connection with a change in the makeup of our properties or personnel. We do not consider the amount of restructuring related costs to be a representative component of the day-to-day operating performance of our business.

• The amount of material settlement and impairment costs incurred outside of our ordinary course of business may be useful for investors to consider because they generally represent gains or losses from the settlement of litigation matters. We do not believe these charges necessarily reflect the current and ongoing cash charges related to our operating cost structure.

The financial items that have been excluded from our net income (loss) to calculate non-GAAP net income and non-GAAP net income per diluted share are purchase amortization and other related costs, stock-based compensation, acquisition- and integration-related costs, restructuring costs and settlement and impairment costs incurred outside our ordinary course of business. These items are discussed above with respect to the calculation of adjusted EBITDA together with the material limitations associated with using this non-GAAP financial measure as compared to net income (loss). We subtract an assumed provision for income taxes to calculate non-GAAP net income. In 2013 and 2014, we assumed a 38% tax rate in order to approximate our long-term effective corporate tax rate.

Non-GAAP net income per diluted share is a non-GAAP financial measure that represents non-GAAP net income divided by the number of diluted shares outstanding for the period used in the calculation of GAAP net income (loss) per diluted share.

Management compensates for the above-described limitations of using non-GAAP measures by using a non-GAAP measure only to supplement our GAAP results and to provide additional information that is useful to understand the factors and trends affecting our business.

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The following table shows our EBITDA reconciled to our net income (loss) and our net cash flows from operating, investing and financing activities for the indicated periods (in thousands):

	Three Months Ended March 31,
	2014			2013
Net income (loss)	$	9,740		$	(2,410	)
Purchase amortization in cost of revenues	2,877			3,027
Purchase amortization in operating expenses	3,299			4,125
Depreciation and other amortization	3,675			3,014
Interest income	(137		)	(104		)
Interest expense	1,615			1,755
Income tax expense, net	5,923			(1,839		)
EBITDA	$	26,992		$	7,568
Net cash flows provided by (used in)
Operating activities	$	(6,555	)	$	10,708
Investing activities	(4,149		)	(4,560		)
Financing activities	(21,844		)	5,249

Comparison of Three Months Ended March 31, 2014 and Three Months Ended March 31, 2013

Revenues. Revenues increased to $119.1 million for the three months ended March 31, 2014, from $104.0 million for the three months ended March 31, 2013. The $15.1 millionincrease was primarily attributable to the further penetration of our subscription-based information services and successful cross-selling of our services to our customers in existing markets, combined with continued high renewal rates.

Gross Margin. Gross margin increased to $85.4 million for the three months ended March 31, 2014, from $70.4 million for the three months ended March 31, 2013. The gross margin percentage increased to 71.7% for the three months ended March 31, 2014, from 67.7% for the three months ended March 31, 2013. The increase in the gross margin amount and percentage was primarily due to an increase in revenue.

Selling and Marketing Expenses. Selling and marketing expenses increased to $27.7 million for the three months ended March 31, 2014, from $27.0 million for the three months ended March 31, 2013, and decreased as a percentage of revenues to 23.3% for the three months ended March 31, 2014, compared to 25.9% for the three months ended March 31, 2013. The increase in the amount of selling and marketing expenses was primarily due to efforts to increase the size of our field sales force.

Software Development Expenses. Software development expenses increased to $12.4 million for the three months ended March 31, 2014, from $12.1 million for the three months ended March 31, 2013, and decreased as a percentage of revenues to 10.4% for the three months ended March 31, 2014, compared to 11.6% for the three months ended March 31, 2013. The increase in the amount of software development expenses was primarily due to an increase in operating costs to support new development efforts.

General and Administrative Expenses. General and administrative expenses decreased to $24.9 million for the three months ended March 31, 2014, from $29.8 million for the three months ended March 31, 2013, and decreased as a percentage of revenues to 20.9% for the three months ended March 31, 2014, compared to 28.7% for the three months ended March 31, 2013. The decrease in the amount and percentage of general and administrative expenses was primarily due to a decrease of stock-based compensation expense of approximately $7.6 million, partially offset by an increase in acquisition-related costs of approximately $1.1 million and an increase in loss contingencies related to outstanding litigation of approximately $600,000 during the three months ended March 31, 2014 that did not occur during the three months ended March 31, 2013.

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Purchase Amortization. Purchase amortization decreased to $3.3 million for the three months ended March 31, 2014, compared to $4.1 million for the three months ended March 31, 2013, and decreased as a percentage of revenues to 2.8% for the three months ended March 31, 2014, compared to 4.0% for the three months ended and March 31, 2013. The decrease in the amount and percentage of purchase amortization expense was due to the accelerated amortization of the acquired customer base from our April 30, 2012 acquisition of LoopNet.

Interest and Other Income. Interest and other income remained relatively consistent at approximately $137,000 for the three months ended March 31, 2014 compared to approximately $104,000 for the three months ended March 31, 2013.

Interest and Other Expense. Interest and other expense decreased to $1.6 million for the three months ended March 31, 2014 compared to $1.8 million for the three months ended March 31, 2013. The decrease was due to the reduction of interest expense resulting from a lower outstanding long-term debt balance during the three months ended March 31, 2014, compared to the three months ended March 31, 2013.

Income Tax Expense, net. Income tax expense, net increased to $5.9 million for the three months ended March 31, 2014, compared to an income tax benefit of approximately $1.8 million for the three months ended March 31, 2013. This increase was primarily due to higher income before income taxes for the three months ended March 31, 2014 as a result of our increased profitability.

Comparison of Business Segment Results for Three Months Ended March 31, 2014 and Three Months Ended March 31, 2013

We manage our business geographically in two operating segments, with our primary areas of measurement and decision-making being the U.S. and International, which includes the U.K. and France. Management relies on an internal management reporting process that provides revenue and operating segment EBITDA, which is our net income (loss) before interest, income taxes, depreciation and amortization. Management believes that operating segment EBITDA is an appropriate measure for evaluating the operational performance of our operating segments. EBITDA is used by management to internally measure our operating and management performance and to evaluate the performance of our business. However, this measure should be considered in addition to, not as a substitute for or superior to, income from operations or other measures of financial performance prepared in accordance with GAAP.

Segment Revenues. CoStar Suite is sold as a platform of service offerings consisting of CoStar Property Professional, CoStar COMPS Professionaland CoStar Tenantand through our mobile application, CoStarGo, and is our primary service offering in our U.S. operating segment. U.S. revenues increased to $113.3 million for the three months ended March 31, 2014, from $99.3 million for the three months ended March 31, 2013. This increase in U.S. revenue was primarily due to the further penetration of our subscription-based information services and successful cross-selling of our services to our customers in existing markets, combined with continued high renewal rates. FOCUS is our primary service offering in our International operating segment. Additionally, we introduced CoStar Suite in the U.K. in the fourth quarter of 2012 and no longer offered FOCUS to new clients beginning in 2013. International revenues increased to $5.8 million for the three months ended March 31, 2014, compared to $4.7 million for the three months ended March 31, 2013. This increase was primarily due to further penetration of our subscription-based information services resulting from sales of CoStar Suite. Intersegment revenue was approximately $116,000 for the three months ended March 31, 2013. Intersegment revenue is attributable to services performed for our wholly owned subsidiary, PPR, by Property and Portfolio Research Ltd., a wholly owned subsidiary of PPR. There was no intersegment revenue for the three months ended March 31, 2014. Intersegment revenue is recorded at an amount we believe approximates fair value. Intersegment revenue is eliminated from total revenues.

Segment EBITDA. U.S. EBITDA increased to $26.4 million for the three months ended March 31, 2014, from $9.3 million for the three months ended March 31, 2013. The increase in U.S. EBITDA resulted primarily from an increase in revenues and a decrease in personnel costs, including the stock-based compensation expense for the three months ended March 31, 2014, compared to the three months ended March 31, 2013. International EBITDA increased to $624,000 for the three months ended March 31, 2014, from a loss of $1.7 million for the three months ended March 31, 2013. This increase was primarily due to a decrease in personnel costs and an increase in revenue. U.S. EBITDA includes an allocation of approximately $400,000 and $0 for the three months ended March 31, 2014 and 2013, respectively. This allocation represents costs incurred for International employees involved in development activities of the Company's U.S. operating segment. International EBITDA includes a corporate allocation of approximately $100,000 for each of the three months ended March 31, 2014 and 2013, respectively. The corporate allocation represents costs incurred for U.S. employees involved in management and expansion activities of the Company's International operating segment.

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Liquidity and Capital Resources

Our principal sources of liquidity are cash, cash equivalents and debt from our term loan and revolving credit facility. Total cash and cash equivalents decreased to $223.4 million as of March 31, 2014 compared to cash and cash equivalents of $256.0 million as of December 31, 2013. The decrease in cash and cash equivalents for the three months ended March 31, 2014 was primarily due to net cash used in financing activities of $21.8 million.

Changes in cash, cash equivalents and short-term investments are dependent upon changes in, among other things, working capital items such as accounts receivable, accounts payable, various accrued expenses and deferred revenues, as well as changes in our capital structure due to stock option exercises, purchases and sales of short-term investments and similar events.

Net cash used in operating activities for the three months ended March 31, 2014 was approximately $6.6 million compared to net cash provided by operating activities of approximately $10.7 million for the three months ended March 31, 2013. This $17.3 million change was primarily due to a net decrease of approximately $18.0 million in changes in operating assets and liabilities, partially offset by an increase of $692,000 in net income plus non-cash items. The $18.0 millionnet decrease in changes in operating assets and liabilities was primarily due to differences in timing of collection of receipts and payments of disbursements.

Net cash used in investing activities for the three months ended March 31, 2014 was approximately $4.1 million compared to approximately $4.6 million for the three months ended March 31, 2013. This $411,000decrease in net cash used in investing activities was primarily due to a $494,000 decrease in purchases of property and equipment and other assets.

Net cash used in financing activities was approximately $21.8 million for the three months ended March 31, 2014 compared to net cash provided by financing activities of approximately $5.2 million for the three months ended March 31, 2013. This $27.0 million change was primarily due to the increase of approximately $39.4 million in repurchases of restricted stock to satisfy tax withholding obligations, partially offset by an increase in excess tax benefits from stock-based compensation of approximately $16.1 million in connection with the exercise of stock options and vesting of restricted stock.

Our future capital requirements will depend on many factors, including, among others, our operating results, expansion and integration efforts, and our level of acquisition activity or other strategic transactions.

During the three months ended March 31, 2014, we incurred capital expenditures of approximately $4.1 million. After considering the acquisition of certain assets and assumed liabilities related to the Apartments.com business, we expect to make aggregate capital expenditures in 2014 of approximately $25.0 million to $30.0 million, primarily related to information technology equipment and the build out of leased office space.

To date, we have grown in part by acquiring other companies and we may continue to make acquisitions. Our acquisitions may vary in size and could be material to our current operations. We may use cash, stock, debt or other means of funding to make these acquisitions.  

We funded the cash portion of the consideration payable to LoopNet stockholders in the merger through a combination of cash on hand, including the net proceeds of approximately $247.9 million from an equity offering we completed in June 2011, and $175.0 million in proceeds from a term loan facility pursuant to the 2012 Credit Agreement, dated February 16, 2012, by and among CoStar, as borrower, CoStar Realty, as co-borrower, J.P. Morgan Bank, as administrative agent, and the other lenders thereto. We made principal payments of approximately $4.4 million for each of the three months ended March 31, 2014 and 2013. As of March 31, 2014, maturities of our borrowings under the 2012 Credit Agreement for each of the next four years ended March 31, 2015 to 2018 before considering the impact of the April 1, 2014 refinancing, were expected to be $26.3 million, $35.0 million, $70.0 million and $17.5 million, respectively.

The 2012 Credit Agreement requires us to maintain a Debt Service Coverage Ratio (as defined in the 2012 Credit Agreement) of at least 1.5 to 1.0 and a Total Leverage Ratio (as defined in the 2012 Credit Agreement) that does not exceed 2.75 to 1.00 during each of the three months ending September 30, 2013, December 31, 2013, March 31, 2014 and June 30, 2014; and 2.50 to 1.00 thereafter. The 2012 Credit Agreement also includes other covenants that were effective as of April 30, 2012, including covenants that, subject to certain exceptions, restrict our ability and the ability of our subsidiaries to (i) incur additional indebtedness, (ii) create, incur, assume or permit to exist any liens, (iii) enter into mergers, consolidations or similar transactions, (iv) make investments and acquisitions, (v) make certain dispositions of assets, (vi) make dividends, distributions and prepayments of certain indebtedness, and (vii) enter into certain transactions with affiliates. We were in compliance with the covenants in the 2012 Credit Agreement as of March 31, 2014.

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Commencing with the fiscal year ending December 31, 2012, the 2012 Credit Agreement requires us to make an annual prepayment of the term loan facility equal to a percentage of Excess Cash Flow (as defined in the 2012 Credit Agreement) to reduce the principal amount outstanding under the term loan facility. The prepayment percentage is 50% when the Total Leverage Ratio exceeds 3.00 to 1.00; 25% when the Total Leverage Ratio is greater than 2.50 to 1.00 but equal to or less than 3.00 to 1.00; and 0% when the Total Leverage Ratio is equal to or less than 2.50 to 1.00. This prepayment requirement is reduced by the amount of prior voluntary prepayments during the respective fiscal year, subject to certain exceptions set forth in the 2012 Credit Agreement. The Excess Cash Flow payment, if required, is due within ten business days of the date on which the annual financial statements are delivered or required to be delivered to the lenders pursuant to the 2012 Credit Agreement. For the fiscal year ended December 31, 2013, we were not required to make an Excess Cash Flow payment.

In connection with obtaining the term loan facility, we incurred approximately $11.5 million in debt issuance costs, which were capitalized and are being amortized as interest expense over the term of the 2012 Credit Agreement using the effective interest method. The debt issuance costs are comprised of approximately $9.2 million in underwriting fees and approximately $2.3 million primarily related to legal fees associated with the debt issuance. 

As of March 31, 2014 and December 31, 2013, no amounts were outstanding under the revolving credit facility. Total interest expense for the term loan facility was approximately $1.6 million and $1.8 million for the three months ended March 31, 2014 and 2013, respectively. Interest expense included amortized debt issuance costs of approximately $710,000 and $747,000 for the three months ended March 31, 2014 and 2013, respectively. Pursuant to the terms of the 2012 Credit Agreement, we are required to make interest payments on the term loan facility at a variable rate of interest and during interest periods selected by us as described in Note 7 of the Notes to Condensed Consolidated Financial Statements included in Part I of this Quarterly Report on Form 10-Q. Total interest paid for the term loan facility was approximately $905,000 and $1.4 million for the three months ended March 31, 2014 and 2013, respectively.

On February 28, 2014, we entered into an Asset Purchase Agreement (the “Asset Purchase Agreement”) with Classified Ventures, LLC (“CV”). Pursuant to the Asset Purchase Agreement, on April 1, 2014 (the “Closing Date”), we purchased from CV certain assets and assumed certain liabilities, in each case, related to the Apartments.com business (collectively, the “Business”) for $585.0 million in cash, subject to a customary working capital adjustment. The purchase price paid at closing was $587.1 million, which reflected an estimated $2.1 million increase in net working capital of the Business as of the closing date over the threshold net working capital amount; this amount is subject to further adjustment once the final net working capital of the Business as of the closing date is determined.

On the Closing Date, we entered into a Credit Agreement (the “2014 Credit Agreement”) by and among CoStar, as Borrower, CoStar Realty Information, Inc., as Co-Borrower, the Lenders from time to time party thereto and JPMorgan Chase Bank, N.A., as Administrative Agent. We funded the purchase price for the Business at closing through a combination of cash on hand and the proceeds of the term loan facility and the initial borrowing under the revolving credit facility under the 2014 Credit Agreement. The 2014 Credit Agreement provides for a $400.0 million term loan facility and a $225.0 million revolving credit facility, each with a term of five years. The proceeds of the term loan facility and the initial borrowing under the revolving credit facility on the Closing Date in an amount of $150.0 million were used to refinance the term loan facility and revolving credit facility established under a credit agreement dated February 16, 2012 (the “2012 Credit Agreement”), including related fees and expenses, and pay a portion of the consideration and transaction costs related to the acquisition. The undrawn proceeds of the revolving credit facility will be available for our working capital and other general corporate purposes. As of March 31, 2014, maturities of our borrowings under the 2014 Credit Agreement for each of the next five years ended March 31, 2015 to 2019, are expected to be $20.0 million, $20.0 million, $20.0 million, $40.0 million and $300.0 million, respectively.

The revolving credit facility includes a subfacility for swingline loans of up to $10.0 million, and up to $10.0 million of the revolving credit facility is available for the issuance of letters of credit. The term loan facility will amortize in quarterly installments in amounts resulting in an annual amortization of 5% during each of the first, second and third years, 10% during the fourth year and 15% during the fifth year after the Closing Date, with the remainder payable at final maturity. The loans under the 2014 Credit Agreement bear interest, at our option, either (i) during any interest period selected by us, at the London interbank offered rate for deposits in U.S. dollars with a maturity comparable to such interest period, adjusted for statutory reserves (“LIBOR”), plus an initial spread of 2.00% per annum, subject to adjustment based on our First Lien Secured Leverage Ratio (as defined in the 2014 Credit Agreement), or (ii) at the greatest of (x) the prime rate from time to time announced by JPMorgan Chase Bank, N.A., (y) the federal funds effective rate plus ½ of 1% and (z) LIBOR for a one-month interest period plus 1.00%, plus an initial spread of 1.00% per annum, subject to adjustment based on our First Lien Secured Leverage Ratio. If an event of default occurs under the 2014 Credit Agreement, the interest rate on overdue amounts will increase by 2.00% per annum. The obligations under the 2014 Credit Agreement are guaranteed by all of our material subsidiaries and are secured by a lien on substantially all of our assets and our material subsidiaries, in each case subject to certain exceptions, pursuant to security and guarantee documents entered into on the Closing Date.

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The 2014 Credit Agreement requires us to maintain (i) a First Lien Secured Leverage Ratio not exceeding 4.00 to 1.00 during the first eight full fiscal quarters after the Closing Date, and 3.50 to 1.00 thereafter and (ii) after the incurrence of additional indebtedness under certain specified exceptions in the 2014 Credit Agreement, a Total Leverage Ratio (as defined in the 2014 Credit Agreement) not exceeding 5.00 to 1.00 during the first eight full fiscal quarters after the Closing Date, and 4.50 to 1.00 thereafter. The 2014 Credit Agreement also includes other covenants, including covenants that, subject to certain exceptions, restrict our ability to (i) incur additional indebtedness, (ii) create, incur, assume or permit to exist any liens, (iii) enter into mergers, consolidations or similar transactions, (iv) make investments and acquisitions, (v) make certain dispositions of assets, (vi) make dividends, distributions and prepayments of certain indebtedness, and (vii) enter into certain transactions with affiliates.

In connection with obtaining the term loan facility and revolving credit facility pursuant to the 2014 Credit Agreement, we incurred approximately $10.4 million in debt issuance costs as of April 1, 2014. The debt issuance costs were comprised of approximately $9.7 million in underwriting fees and approximately $700,000 primarily related to legal fees associated with the debt issuance. Approximately $10.2 million of the fees associated with the refinancing, along with the unamortized debt issuance cost from the 2012 Credit Agreement are capitalized and amortized as interest expense over the term of the 2014 Credit Agreement using the effective interest method. 

In 2012, we granted a total of 399,413 shares pursuant to performance-based restricted common stock awards with a forfeiture date of March 31, 2017. Upon vesting of these awards, consistent with tax minimum withholding requirements, a portion of the shares subject to the awards were remitted by the employees for payment of their individual income tax obligations. The shares remitted were canceled and we made a cash tax payment equivalent to the fair market value of the canceled shares of approximately $31.9 million.

Based on current plans, we believe that our available cash combined with positive cash flow provided by operating activities should be sufficient to fund our operations for at least the next 12 months.

As of March 31, 2014, we had $24.3 million par value of long-term investments in student loan ARS, which failed to settle at auctions. The majority of these investments are of high credit quality with AAA credit ratings and are primarily securities supported by guarantees from the FFELP of the U.S. Department of Education. While we continue to earn interest on these investments, the investments are not liquid in the short-term. In the event we need to immediately access these funds, we may have to sell these securities at an amount below par value. Based on our ability to access our cash and cash equivalents, and our expected operating cash flows, we do not anticipate having to sell these investments below par value in order to operate our business in the foreseeable future.

As more fully described in Note 9 of the Notes to Condensed Consolidated Financial Statements included in Part I of this Quarterly Report on Form 10-Q, on January 3, 2012, LoopNet, our wholly owned subsidiary, was sued by CIVIX-DDI, LLC (“Civix”) for alleged patent infringement, and on or about May 14, 2012, Civix filed a motion for leave to amend its complaint against LoopNet seeking to add CoStar as a defendant, alleging that our products also infringe Civix’s patents. The complaint seeks unspecified damages, attorneys' fees and costs. On June 21, 2012, we filed an action seeking a declaratory judgment of non-infringement and invalidity against Civix; we amended this complaint on August 14, 2012 to assert an affirmative claim against Civix for breach of contract, alleging Civix violated its license agreement and covenant not to sue with one of our technology licensors. On November 25, 2013, Civix submitted its expert’s report of damages, which estimated the payment it deemed appropriate in the event that we are found liable of infringement. We believe that Civix’s calculation of damages is based on improper assumptions and miscalculations, and is otherwise unsupported. We submitted our own expert’s report of damages, which concluded that the appropriate payment to be made in the event that we are found liable of infringement is significantly less than Civix’s estimate of appropriate damages. Moreover, our expert’s report of damages concluded that while Civix’s calculation of damages was fundamentally flawed and should not be used to determine damages, simply applying certain necessary adjustments to Civix’s calculation as outlined in our expert's report resulted in a significant reduction in Civix’s calculation of damages to approximately $3.7 million. On November 5, 2013 we offered to settle all outstanding litigation with Civix for $600,000. On April 9, 2014 the Company offered to settle all outstanding litigation with Civix for $1.2 million. At this time we cannot predict the outcome of the litigation with Civix, but we intend to vigorously defend against Civix’s claims. While we believe we have meritorious defenses against Civix’s claims, we estimate that, based on our adjusted calculation of Civix’s alleged damages, the matter could result in a loss of up to $2.5 million in excess of the amount accrued.

Recent Accounting Pronouncements

There have been no developments to the Recent Accounting Pronouncements discussion included in our Annual Report on Form 10-K for the year ended December 31, 2013, including the expected dates of adoption and estimated effects on our consolidated financial statements.

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Cautionary Statement Concerning Forward-Looking Statements

We have made forward-looking statements in this Report and make forward-looking statements in our press releases and conference calls that are subject to risks and uncertainties. Forward-looking statements include information that is not purely historic fact and include, without limitation, statements concerning our financial outlook for 2014 and beyond, our possible or assumed future results of operations generally, and other statements and information regarding assumptions about our revenues, EBITDA, adjusted EBITDA, non-GAAP net income, non-GAAP net income per share, net income per share, fully diluted net income per share, weighted-average outstanding shares, taxable income, cash flow from operating activities, available cash, operating costs, amortization expense, intangible asset recovery, capital and other expenditures, effective tax rate, equity compensation charges, future taxable income, purchase amortization, the anticipated benefits of completed acquisitions, the anticipated benefits of cross-selling efforts, the timing of future payments of principal pursuant to existing credit agreements, expectations regarding our compliance with financial and restrictive covenants in our existing credit agreements, acquisitions, financing plans, geographic expansion, product development and release, sales and marketing campaigns, product integrations, elimination and de-emphasizing of services, contract renewal rate, capital structure, contractual obligations, legal proceedings and claims, our database, database growth, services and facilities, employee relations, future economic performance, our ability to liquidate or realize our long-term investments, management's plans, goals and objectives for future operations, and growth and markets for our stock. Sections of this Report which contain forward-looking statements include the Financial Statements and related Notes, “Management's Discussion and Analysis of Financial Condition and Results of Operations,” “Quantitative and Qualitative Disclosures About Market Risk,” “Legal Proceedings” and “Risk Factors.”

Our forward-looking statements are also identified by words such as “hope,” “anticipate,” “may,” “believe,” “expect,” “intend,” “will,” “should,” “plan,” “estimate,” “predict,” “continue” and “potential” or the negative of these terms or other comparable terminology. You should understand that these forward-looking statements are estimates reflecting our judgment, beliefs and expectations, not guarantees of future performance. They are subject to a number of assumptions, risks and uncertainties that could cause actual results to differ materially from those expressed or implied in the forward-looking statements. The following important factors, in addition to those discussed or referred to under the heading “Risk Factors,” and other unforeseen events or circumstances, could affect our future results and could cause those results or other outcomes to differ materially from those expressed or implied in our forward-looking statements: commercial real estate market conditions; the pace of recovery in the commercial real estate market; general economic conditions; our ability to identify, acquire and integrate acquisition candidates; our ability to realize the expected benefits, cost savings or other synergies from acquisitions on a timely basis or at all; our ability to combine the acquired businesses successfully or in a timely and cost-efficient manner; business disruption relating to integration of acquired businesses; the amount of investment for sales and marketing; the time and resources required to develop upgraded services and expansion of service offerings; changes or consolidations within the commercial real estate industry; customer retention; our ability to attract new clients; our ability to sell additional services to existing clients; our ability to integrate our U.S. and international product offerings; our ability to successfully introduce new products or upgraded services in U.S. and foreign markets; our ability to attract consumers to our online marketplaces; our ability to effectively and strategically combine, eliminate or de-emphasize service offerings; competition; foreign currency fluctuations; global credit market conditions affecting investments; our ability to continue to expand successfully, timely and in a cost-efficient manner, including internationally; our ability to effectively penetrate the market for retail real estate information and gain acceptance in that market; our ability to control costs; litigation; changes in accounting policies or practices; release of new and upgraded services or entry into new markets by us or our competitors; data quality; expansion, growth, development and reorganization of our sales force; employee retention; technical problems with our services; managerial execution; changes in relationships with real estate brokers and other strategic partners; legal and regulatory issues; and successful adoption of and training on our services. 

Accordingly, you should not place undue reliance on forward-looking statements, which speak only as of, and are based on information available to us on, the date of this Report. All subsequent written and oral forward-looking statements attributable to us or any person acting on our behalf are expressly qualified in their entirety by the cautionary statements contained or referred to in this section. We do not undertake any obligation to update any such statements or release publicly any revisions to these forward-looking statements to reflect new information or events or circumstances after the date of this Report or to reflect the occurrence of unanticipated events.

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Item 3. Quantitative and Qualitative Disclosures About Market Risk

We provide information, analytics and marketing services to the commercial real estate and related business community in the U.S., U.K. and France. Our functional currency for our operations in the U.K. and France is the local currency. As such, fluctuations in the British Pound and Euro may have an impact on our business, results of operations and financial position. We currently do not use financial instruments to hedge our exposure to exchange rate fluctuations with respect to our foreign subsidiaries. We may seek to enter hedging transactions in the future to reduce our exposure to exchange rate fluctuations, but we may be unable to enter into hedging transactions successfully, on acceptable terms or at all. As of March 31, 2014, accumulated other comprehensive loss included a loss from foreign currency translation adjustments of approximately $3.7 million.

We do not have material exposure to market risks associated with changes in interest rates related to cash equivalent securities held as of March 31, 2014. As of March 31, 2014, we had $223.4 million of cash and cash equivalents. If there is an increase or decrease in interest rates, there will be a corresponding increase or decrease in the amount of interest earned on our cash and cash equivalents.

As of March 31, 2014, we had $148.8 million of long-term debt bearing interest at a variable rate of LIBOR plus 2.00%. If there is an increase or decrease in interest rates, there will be a corresponding increase or decrease in the amount of interest expense on our long-term debt. Based on our outstanding borrowings as of March 31, 2014, an increase in the interest rate by 25 basis points would result in an increase of approximately $400,000 in interest expense annually. Based on our outstanding borrowings as of March 31, 2014, a decrease in the interest rate by 25 basis points would result in a decrease of approximately $400,000 in interest expense annually. Based on our ability to access our cash and cash equivalents, and our expected operating cash flows, we do not believe that increases or decreases in interest rates will impact our ability to operate our business in the foreseeable future.

Included within our long-term investments are investments in mostly AAA-rated student loan ARS. These securities are primarily securities supported by guarantees from the FFELP of the U.S. Department of Education. As of March 31, 2014, auctions for $24.3 million of our investments in auction rate securities failed. As a result, we may not be able to sell these investments at par value until a future auction on these investments is successful. In the event we need to immediately liquidate these investments, we may have to locate a buyer outside the auction process, who may be unwilling to purchase the investments at par, resulting in a loss. Based on an assessment of fair value of these investments in ARS as of March 31, 2014, we determined that there was a decline in the fair value of our ARS investments of approximately $1.3 million, which was deemed to be a temporary impairment and recorded as an unrealized loss in accumulated other comprehensive loss in stockholders' equity. If the issuers are unable to successfully close future auctions and/or their credit ratings deteriorate, we may be required to adjust the carrying value of these investments as a temporary impairment and recognize a greater unrealized loss in accumulated other comprehensive loss or as an other-than-temporary impairment charge to earnings. Based on our ability to access our cash and cash equivalents, and our expected operating cash flows, we do not anticipate having to sell these securities below par value in order to operate our business in the foreseeable future. See Notes 3 and 4 to the Notes to Condensed Consolidated Financial Statements included in Part I of this Quarterly Report on Form 10-Q for further discussion.

We have approximately $856.0 million in intangible assets as of March 31, 2014. As of March 31, 2014, we believe our intangible assets will be recoverable, however, changes in the economy, the business in which we operate and our own relative performance could change the assumptions used to evaluate intangible asset recoverability. In the event that we determine that an asset has been impaired, we would recognize an impairment charge equal to the amount by which the carrying amount of the assets exceeds the fair value of the asset. We continue to monitor these assumptions and their effect on the estimated recoverability of our intangible assets.

Item 4. Controls and Procedures

We maintain disclosure controls and procedures that are designed to ensure that information required to be disclosed in our reports filed or submitted under the Exchange Act is recorded, processed, summarized and reported, within the time periods specified in the Securities and Exchange Commission's rules and forms, and that such information is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate, to allow for timely decisions regarding required disclosure. In designing and evaluating the disclosure controls and procedures, management recognized that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives, and management is required to apply its judgment in evaluating the cost-benefit relationship of possible controls and procedures.

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As of March 31, 2014, we carried out an evaluation, under the supervision and with the participation of our management, including our Chief Executive Officer and our Chief Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures. Based on the foregoing, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures were effective and were operating at the reasonable assurance level.

There have been no changes in our internal control over financial reporting during our most recent fiscal quarter that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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PART II — OTHER INFORMATION

Item 1. Legal Proceedings

 Currently, and from time to time, we are involved in litigation incidental to the conduct of our business. Certain pending legal proceedings are discussed in Note 9 of the Notes to Condensed Consolidated Financial Statements included in Part I of this Quarterly Report on Form 10-Q. We are not a party to any lawsuit or proceeding that, in the opinion of our management based on consultations with legal counsel, is likely to have a material adverse effect on our financial position or results of operations.

Item 1A. Risk Factors

In addition to the other information set forth in this Quarterly Report on Form 10-Q, you should carefully consider the factors discussed in Part I, “Item 1A. Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2013 (the “2013 Form 10-K”), which could materially affect our business, financial condition or future results. The risks described in our 2013 Form 10-K are not the only risks facing our company. Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial also may materially adversely affect our business, financial condition and/or results of operations. Other than the risk factors discussed below which are related to the acquisition of the Apartments.com business on April 1, 2014, there have been no material changes to the Risk Factors as previously disclosed in Part I, “Item 1A. Risk Factors” in our 2013 Form 10-K.

Risks Related to our Acquisition of Apartments.com

The failure to successfully integrate the Apartments.com business and/or fully realize expected synergies from the acquisition in the expected time frame or at all may adversely affect our future results and our business. The success of the Apartments.com acquisition will depend, in part, on our ability to successfully integrate the Apartments.com business and realize the benefits and synergies we anticipate to result from the combination of our business and the Apartments.com business, including anticipated growth opportunities and cost savings. We may not be able to achieve these objectives in whole or in part. Any failure to timely realize these anticipated benefits could have a material adverse effect on our revenues, expenses and operating results.

The success of the acquisition will also depend in part on our ability to minimize or eliminate any difficulties that may occur in connection with the integration of our business and the Apartments.com business. The integration process could result in the loss of key employees, loss of key clients, loss of key vendors and other business partners, increases in operating costs, increases in taxes, or the disruption of each company's ongoing businesses, any or all of which could adversely affect our ability to achieve the anticipated benefits and synergies of the acquisition. Our efforts to integrate the two businesses will divert management's attention and other resources from uses that could otherwise have been beneficial to the Company. In addition, management may decide to combine or eliminate products or services currently offered by Apartments.com, which could also result in the loss of revenues, key employees, key clients, key vendors or other business partners.

During the integration process, we will depend on CV to provide certain services to us during a transitional period, including, among others, services to ensure the continued operation of the Apartments.com websites. If these services are not provided to us, we may incur additional expense to replicate or procure these services from other third parties. In addition, if our Apartments.com websites are not available to users, our reputation may be damaged and the organic search rankings of our Apartments.com websites may decline, either of which could adversely affect user traffic to our Apartments.com websites and impair our ability to market our Apartments.com services or to attract and retain advertisers for our Apartments.com webpages. Such a result could damage our competitive position, slow the adoption of our Apartments.com services and adversely affect our revenues, business, results of operations and financial condition.

We have incurred and will continue to incur acquisition-related costs.We have incurred and continue to expect to incur acquisition-related costs, including legal and accounting fees and expenses, and other related charges. We expect to incur additional costs to integrate the two companies' businesses, such as IT integration expenses, costs related to the renegotiation or transfer of vendor agreements, retention costs and severance costs. Costs in connection with the integration may be higher than expected, and we may also incur unanticipated integration-related costs. These costs could adversely affect our financial condition, results of operation or prospects of the combined business.

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We have indebtedness following the completion of the acquisition, which could adversely affect us, including by decreasing our business flexibility and increasing our costs.On April 1, 2014, we entered into a Credit Agreement (the “2014 Credit Agreement”) by and among CoStar, as borrower, CoStar Realty Information, Inc., as co-borrower, the lenders from time to time party thereto and JPMorgan Chase Bank, N.A., as administrative agent. The 2014 Credit Agreement provides for a $400.0 million term loan facility and a $225.0 million revolving credit facility, each with a term of five years. The proceeds of the term loan facility and the initial borrowing under the revolving credit facility on the Closing Date in an amount of $150.0 million were used to refinance the 2012 Credit Agreement, including related fees and expenses, and pay a portion of the consideration and transaction costs related to the acquisition. The 2014 Credit Agreement contains customary restrictive covenants imposing operating and financial restrictions on us, including restrictions that may limit our ability to engage in acts that we believe may be in our long-term best interests. These covenants restrict our ability and the ability of our subsidiaries to (i) incur additional indebtedness, (ii) create, incur, assume or permit to exist any liens, (iii) enter into mergers, consolidations or similar transactions, (iv) make investments and acquisitions, (v) make certain dispositions of assets, (vi) make dividends, distributions and prepayments of certain indebtedness, and (vii) enter into certain transactions with affiliates.

The operating restrictions and financial covenants in the 2014 Credit Agreement and any future financing agreements may limit our ability to finance future operations or capital needs, to engage in other business activities or to respond to changes in market conditions. Our ability to comply with any financial covenants could be affected materially by events beyond our control, and we may be unable to satisfy any such requirements. If we fail to comply with these covenants, we may need to seek waivers or amendments of such covenants, seek alternative or additional sources of financing or reduce our expenditures. We may be unable to obtain such waivers, amendments or alternative or additional financing on a timely basis or at all, or on favorable terms.

We are required to make periodic principal and interest payments pursuant to the terms of the 2014 Credit Agreement. If an event of default occurs, the interest rate on overdue amounts will increase and the lenders under the 2014 Credit Agreement may declare all outstanding borrowings, together with accrued interest and other fees, to be immediately due and payable and may exercise remedies in respect of the collateral. We may not be able to repay all amounts due under the 2014 Credit Agreement in the event these amounts are declared due upon an event of default.

We may have difficulty attracting, motivating and retaining executives and other key employees in light of the acquisition.Uncertainty about the effect of the acquisition on our employees and Apartments.com employees may have an adverse effect on the combined business. This uncertainty may impair our ability to attract, retain and motivate key personnel. If our key employees or Apartments.com key employees depart, we may incur costs in identifying, hiring, training and retaining replacements for departing employees, which could reduce our ability to realize the anticipated benefits of the acquisition.

Additional Risks Related to Our Business

We may be unable to increase awareness of the CoStar, LoopNet or Apartments.com brands, which could adversely affect our business. We rely heavily on our brands, which we believe are key assets of our Company. Awareness and differentiation of our brands are important for attracting and expanding the number of users of, and subscribers to, our online marketplaces, such as Apartments.com and LoopNet.com. In 2014, we expect to increase our investment in sales and marketing activities to increase brand awareness and grow traffic. Further, we expect that sales and marketing expenses will continue to increase as we seek to grow the number of subscribers or advertisers to our marketplaces. Increased advertising may not be successful in increasing brand awareness or, ultimately, be cost-effective. If we are unable to maintain or enhance user and advertiser awareness of our brands, or if we are unable to recover our additional marketing and advertising costs through increased usage of our services, our business, results of operations and financial condition could be adversely affected.

We rely on Internet search engines to drive traffic to our websites. If search results do not feature our websites prominently, traffic to our websites would decrease and our business could be adversely affected. Google, Bing, Yahoo! and other Internet search websites drive traffic to our websites, including Apartments.com and LoopNet.com. For example, when a user types an apartment building address into an Internet search engine, organic search ranking of our Apartments.com webpages will determine how prominently such webpages are displayed in the search results. However, our ability to maintain high organic search result rankings is not entirely within our control. Our competitors’ search engine optimization, or SEO, efforts may result in their websites receiving a higher search result page ranking than do ours, or Internet search engines could revise their methodologies in a way that would adversely affect our search result rankings, each of which could slow the growth of our user base. Further, search engine providers could align with our competitors, which could adversely affect traffic to our websites. Our websites have experienced fluctuations in search result rankings in the past, and we anticipate similar fluctuations in the future; however, if we experience a material reduction in the number of users directed to our websites through Internet search engines, our business, results of operations and financial condition could be adversely affected.

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If we are unable to maintain or increase traffic to our marketplaces, our business and operating results could be adversely affected. Our ability to generate revenue from our marketplace businesses depends, in part, on our ability to attract users to our websites. If we fail to maintain or increase traffic to our marketplaces, our ability to acquire additional subscribers or advertisers and deliver leads to existing subscribers and advertisers could be adversely affected. We expect that our marketing expenses may increase in connection with our efforts to maintain or increase traffic to our websites. Our efforts to maintain or generate additional traffic to our marketplaces may not be successful. Even if we are able to attract additional users, increases in our operating expenses could negatively impact our operating results if we are unable to generate more revenue through increased sales of subscriptions to our marketplace products. We also face competition to attract users to our marketplace websites. Our existing and potential competitors include companies that could devote greater technical and other resources than we have available to provide services that users might view as superior to our offerings. Any of our future or existing competitors may introduce different solutions that attract users away from our services or provide solutions similar to our own that have the advantage of better branding or marketing resources. If we are unable to increase traffic to our marketplaces, or if we are unable to generate enough additional revenue to offset increases in expenses related to increasing traffic to our marketplaces, our business and operating results could be adversely affected.

If real estate professionals or other advertisers reduce or cancel their advertising spending with us and we are unable to attract new advertisers, our operating results would be harmed. Our marketplace businesses, including the Apartments.com business and LoopNet.com, depend on advertising revenue generated primarily through sales to persons in the real estate industry, including property managers and owners, and other advertisers. Our ability to attract and retain advertisers, and ultimately to generate advertising revenue, depends on a number of factors, including:

• increasing the number of unique visitors to, and users of, our websites and mobile applications;

• the quantity and quality of the leads that we provide to our advertisers;

• the success of any increased marketing and product development efforts directed at attracting additional users and advertisers to our marketplaces;

• keeping pace with changes in technology and with our competitors; and

• offering an attractive return on investment to our advertisers for their advertising spending with us.

Further, with respect to the Apartments.com marketplace, our ability to attract and retain advertisers also depends on the current apartment rental market and apartment vacancy rates. If vacancy rates are too high or too low, advertisers may not need to utilize our marketplace services.

We do not have long-term contracts with most of the advertisers who advertise on our marketplaces. These advertisers could choose to modify or discontinue their relationships with us with little or no advance notice. In addition, as existing subscriptions for advertising expire, we may not be successful in renewing these subscriptions or securing new subscriptions. We may not succeed in retaining existing advertisers’ spending or capturing a greater share of such spending if we are unable to convince advertisers of the effectiveness of our services as compared to alternatives. In addition, future changes to our pricing methodology for advertising services may cause advertisers to reduce or discontinue their advertising with us. If current advertisers reduce or end their advertising spending with us and we are unable to attract new advertisers, our advertising revenue and business, results of operations and financial condition could be adversely affected.

If we do not invest in product development and provide services that are attractive to our users and to our advertisers, our business could be adversely affected. Our success depends on our continued improvements to provide services that make our marketplaces useful for users, and attractive to our advertisers. As a result, we must continually invest resources in research and development to improve the appeal and comprehensiveness of our services and effectively incorporate new technologies. If we are unable to provide services that users want to use, then users may become dissatisfied and use competitors’ websites. If we are unable to continue offering innovative services, we may be unable to attract additional users and advertisers or retain our current users and advertisers, which could harm our business, results of operations and financial condition.

We may not be able to compete successfully against existing or future competitors in attracting advertisers, which could harm our business, results of operations and financial condition. We compete to attract advertisers. Large companies with significant brand recognition have large numbers of direct sales personnel and web traffic, which may provide a competitive advantage. To compete successfully for advertisers against future and existing competitors, we must continue to invest resources in developing our advertising platform and proving the effectiveness and relevance of our advertising services. Pressure from competitors seeking to acquire a greater share of our advertisers’ overall marketing budget could adversely affect our pricing and margins, lower our revenue, and increase our research and development and marketing expenses. If we are unable to compete successfully against our existing or future competitors, our business, results of operations or financial condition could be adversely affected.

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Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

The following table is a summary of our repurchases of common stock during each of the three months in the quarter ended March 31, 2014:

ISSUER PURCHASES OF EQUITY SECURITIES

Month, 2014	Total Number of Shares Purchased		Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs	Maximum Number of Shares that May Yet Be Purchased Under the Plans or Programs
January 1 through January 31	1,979		$	174.37	—	—
February 1 through February 28	189,561		200.85		—	—
March 1 through March 31	19,693		209.96		—	—
Total	211,233	(1)	$	201.45	—	—

⁽¹⁾ The number of shares purchased consists of shares of common stock tendered by employees to the Company to satisfy the employees' minimum tax withholding obligations arising as a result of vesting of restricted stock grants under the Company's 2007 Stock Incentive Plan, as amended, which shares were purchased by the Company based on their fair market value on the vesting date. None of these share purchases were part of a publicly announced program to purchase common stock of the Company.

Item 3. Defaults Upon Senior Securities

None.

Item 4. Mine Safety Disclosures

Not applicable.

Item 5. Other Information

None.

Item 6. Exhibits

See exhibits listed under the Exhibit Index below.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

		COSTAR GROUP, INC.
Date:	April 24, 2014	By:	/s/ Brian J. Radecki
			Brian J. Radecki Chief Financial Officer (Principal Financial and Accounting Officer and Duly Authorized Officer)

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INDEX TO EXHIBITS

Exhibit No.	Description
2.1	Agreement and Plan of Merger, dated as of April 27, 2011, by and among CoStar Group, Inc., Lonestar Acquisition Sub, Inc. and LoopNet, Inc. (Incorporated by reference to Exhibit 2.1 to the Registrant's Current Report on Form 8-K filed with the Commission on April 28, 2011).
2.2	Amendment No. 1 to the Agreement and Plan of Merger, dated as of May 20, 2011, among LoopNet, Inc., the Registrant and Lonestar Acquisition Sub, Inc. (Incorporated by reference to Exhibit 2.1 to the Registrant's Current Report on Form 8-K filed with the Commission on May 23, 2011).
3.1	Third Amended and Restated Certificate of Incorporation (Incorporated by reference to Exhibit 3.1 to the Registrant's Current Report on Form 8-K filed with the Commission on June 6, 2013).
3.2	Third Amended and Restated By-Laws (Incorporated by reference to Exhibit 3.1 to the Registrant's Current Report on Form 8-K filed with the Commission on September 24, 2013).
10.1	Asset Purchase Agreement, dated as of February 28, 2014, by and between Classified Ventures, LLC and CoStar Group, Inc. (Incorporated by reference to Exhibit 10.1 to CoStar’s Current Report on Form 8-K, filed March 3, 2014).
10.2	Credit Agreement, dated as of April 1, 2014, by and among CoStar Group, Inc., as Borrower, CoStar Realty Information, Inc., as Co-Borrower, the Lenders from time to time party thereto and JPMorgan Chase Bank, N.A., as Administrative Agent (Incorporated by reference to Exhibit 10.1 to CoStar’s Current Report on Form 8-K, filed April 4, 2014).
31.1	Certification of Principal Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 (filed herewith).
31.2	Certification of Principal Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 (filed herewith).
32.1	Certification of Principal Executive Officer pursuant to 18 U.S.C. Sec. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (filed herewith).
32.2	Certification of Principal Financial Officer pursuant to 18 U.S.C. Sec. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (filed herewith).
101	The following materials from CoStar Group, Inc.'s Quarterly Report on Form 10-Q for the quarter ended March 31, 2014, formatted in XBRL (eXtensible Business Reporting Language): (i) Unaudited Condensed Consolidated Statement of Operations for the three months ended March 31, 2014 and 2013, respectively; (ii) Unaudited Condensed Consolidated Statements of Comprehensive Income (Loss) for the three months ended March 31, 2014 and 2013, respectively; (iii) Unaudited Condensed Consolidated Balance Sheets at March 31, 2014 and December 31, 2013, respectively; (iv) Unaudited Condensed Consolidated Statements of Cash Flows for the three months ended March 31, 2014 and 2013, respectively; and (v) Notes to the Unaudited Condensed Consolidated Financial Statements that have been detail tagged.

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