10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

______________________________________________________________________________________________________

Form 10-Q

______________________________________________________________________________________________________

☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 

For the Quarterly Period Ended June 30, 2021

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: 001-35444

_____________________________________________________________________________________________________

YELP INC.

(Exact Name of Registrant as Specified in Its Charter)

______________________________________________________________________________________________________

Delaware	20-1854266
(State or Other Jurisdiction of Incorporation or Organization)	(I.R.S. Employer Identification No.)

140 New Montgomery Street, 9th Floor

San Francisco, California 94105

(Address of principal executive offices) (Zip Code)

(415) 908-3801

(Registrant’s Telephone Number, Including Area Code)

_________________________________________

Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class	Trading Symbol(s)	Name of Each Exchange on Which Registered
Common Stock, par value $0.000001 per share	YELP	New York Stock Exchange LLC

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  ☑  No  ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted 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 such files). Yes  ☑  No ☐

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

Large accelerated filer	☑	Accelerated filer	☐
Non-accelerated filer	☐	Smaller reporting company	☐
		Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

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

As of August 3, 2021, there were 73,564,964 shares outstanding of the registrant’s common stock, par value $0.000001 per share.

YELP INC.

QUARTERLY REPORT ON FORM 10-Q

TABLE OF CONTENTS

		Page
Part I.	Financial Information
Item 1.	Financial Statements (Unaudited)
	Condensed Consolidated Balance Sheets	4
	Condensed Consolidated Statements of Operations	5
	Condensed Consolidated Statements of Comprehensive Income (Loss)	6
	Condensed Consolidated Statements of Stockholders' Equity	7
	Condensed Consolidated Statements of Cash Flows	9
	Notes to Condensed Consolidated Financial Statements	10
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	25
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	35
Item 4.	Controls and Procedures	35
Part II.	Other Information
Item 1.	Legal Proceedings	36
Item 1A.	Risk Factors	36
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	36
Item 3.	Defaults Upon Senior Securities	36
Item 4.	Mine Safety Disclosures	36
Item 5.	Other Information	36
Item 6.	Exhibits	37
Signatures

___________________________________

Unless the context suggests otherwise, references in this Quarterly Report on Form 10-Q (the “Quarterly Report”) to “Yelp,” the “Company,” “we,” “us” and “our” refer to Yelp Inc. and, where appropriate, its subsidiaries.

Unless the context otherwise indicates, where we refer in this Quarterly Report to our “mobile application” or “mobile app,” we refer to all of our applications for mobile-enabled devices; references to our “mobile platform” refer to both our mobile app and the versions of our website that are optimized for mobile-based browsers. Similarly, references to our “website” refer to versions of our website dedicated to both desktop- and mobile-based browsers, as well as the U.S. and international versions of our website.

1

SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

This Quarterly Report contains forward-looking statements that involve risks, uncertainties and assumptions that, if they never materialize or prove incorrect, could cause our results to differ materially from those expressed or implied by such forward-looking statements. All statements contained in this Quarterly Report that are not purely historical, including statements regarding our future results of operations or financial condition, business strategy and plans, and objectives of management for future operations, are forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Forward-looking statements may include, but are not limited to, statements about:

•our financial performance, including our revenue, operating expenses and margins, as well as our ability to sustain profitability;

•our ability to maintain and expand our advertiser base;

•our strategic initiatives to support revenue growth and margin expansion;

•our investment plans and priorities, including planned investments in product development, marketing and our sales channels, as well as our ability to execute against those priorities and the results thereof;

•our plans to operate with a primarily distributed workforce as well as the benefits and costs thereof;

•trends and expectations regarding customer and revenue retention;

•trends and expectations regarding our key metrics, including consumer traffic and engagement and the opportunity they present for growth;

•our liquidity and working capital requirements; and

•our plans with respect to our stock repurchase program.

Forward-looking statements are often identified by the use of words such as, but not limited to, “anticipate,” “believe,” “can,” “continue,” “could,” “estimate,” “expect,” “intend,” “may,” “might,” “plan,” “project,” “seek,” “should,” “target,” “will,” “would” and similar expressions or variations intended to identify forward-looking statements.

These statements are based on the beliefs and assumptions of our management, which are in turn based on information currently available to management. Such forward-looking statements are subject to risks, uncertainties and other important factors that could cause actual results and the timing of certain events to differ materially from future results expressed or implied by such forward-looking statements. Moreover, we operate in a very competitive and rapidly changing environment. New risks emerge from time to time. It is not possible for our management to predict all risks, nor can we assess the impact of all factors on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statements we may make. In light of these risks, uncertainties and assumptions, the forward-looking events and circumstances discussed in this Quarterly Report may not occur and actual results could differ materially and adversely from those anticipated or implied in the forward-looking statements.

Factors that could cause or contribute to such differences include, but are not limited to, those discussed in the section titled “Risk Factors” included under Part I, Item 1A in our Annual Report on Form 10-K for the year ended December 31, 2020 (the "Annual Report"), such as:

•fluctuations in the number of COVID-19 cases, vaccination rates in the United States, the timeframe for lifting of pandemic-related business and travel restrictions as well as the potential re-imposition thereof, the emergence of COVID-19 variants and related public health and consumer responses, and the pace of economic recovery in local economies and the United States generally;

•our ability to maintain and expand our advertiser base, particularly as many businesses continue to be subject to operating restrictions in connection with the COVID-19 pandemic;

•our ability to execute on our strategic initiatives and the effectiveness thereof;

•our ability to hire, retain, motivate and effectively manage well-qualified employees in a primarily remote work environment;

•our ability to maintain and increase user engagement on our platform, including our ability to generate, maintain and recommend sufficient content that consumers find relevant, helpful and reliable;

2

•our reliance on third-party service providers and strategic partners;

•our reliance on search engines and application marketplaces, certain providers of which offer products and services that compete directly with our products;

•our ability to maintain the uninterrupted and proper operation of our technology and network infrastructure;

•actual or perceived security breaches as well as errors, vulnerabilities or defects in our software or in products of third-party providers;

•our ability to generate sufficient revenue to regain profitability, particularly in light of our limited operating history in an evolving industry, significant ongoing investments in our strategic initiatives, and the ongoing impact of the COVID-19 pandemic and our relief initiatives;

•our ability to accurately forecast revenue and appropriately plan expenses;

•our ability to operate effectively on mobile devices and other platforms beyond desktop computers;

•our actual or perceived failure to comply with laws and regulations applicable to our business;

•our ability to maintain, protect and enhance the Yelp brand and manage negative publicity that may arise; and

•our ability to successfully manage any strategic opportunities, including the acquisition and integration of any new businesses, solutions or technologies, as well as our ability to monetize the acquired products.

Furthermore, such forward-looking statements speak only as of the date of this report. Except as required by law, we undertake no obligation to update any forward-looking statements to reflect events or circumstances after the date of such statements.

NOTE REGARDING METRICS

We review a number of performance metrics to evaluate our business, measure our performance, identify trends in our business, prepare financial projections and make strategic decisions. Please see the section titled “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Key Metrics” in this Quarterly Report and in our Annual Report for information on how we define our key metrics. Unless otherwise stated, these metrics do not include metrics from Yelp Reservations, Yelp Waitlist or our business-owner products.

While our metrics are based on what we believe to be reasonable calculations, there are inherent challenges in measuring usage across our large user base. Certain of our performance metrics, including the number of unique devices accessing our mobile app, are tracked with internal company tools, which are not independently verified by any third party and have a number of limitations. For example, our metrics may be affected by mobile applications that automatically contact our servers for regular updates with no discernible user action involved; this activity can cause our system to count the device associated with the app as an app unique device in a given period. Although we take steps to exclude such activity and, as a result, do not believe it has had a material impact on our reported metrics, our efforts may not successfully account for all such activity.

Our metrics that are calculated based on data from third parties — the number of desktop and mobile website unique visitors — are subject to similar limitations. Our third-party providers periodically encounter difficulties in providing accurate data for such metrics as a result of a variety of factors, including human and software errors. In addition, because these traffic metrics are tracked based on unique cookie identifiers, an individual who accesses our website from multiple devices with different cookies may be counted as multiple unique visitors, and multiple individuals who access our website from a shared device with a single cookie may be counted as a single unique visitor. As a result, the calculations of our unique visitors may not accurately reflect the number of people actually visiting our website.

Our measures of traffic and other key metrics may also differ from estimates published by third parties (other than those whose data we use to calculate such metrics) or from similar metrics of our competitors. We are continually seeking to improve our ability to measure these key metrics, and regularly review our processes to assess potential improvements to their accuracy. From time to time, we may discover inaccuracies in our metrics or make adjustments to improve their accuracy, including adjustments that may result in the recalculation of our historical metrics. We believe that any such inaccuracies or adjustments are immaterial unless otherwise stated.

3

PART I. FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS

YELP INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

(In thousands, except share data)

(Unaudited)

	June 30, 2021		December 31, 2020
Assets
Current assets:
Cash and cash equivalents	$	558,227	$	595,875
Accounts receivable (net of allowance for doubtful accounts of $9,289 and $11,559 at June 30, 2021 and December 31, 2020, respectively)	101,542		88,400
Prepaid expenses and other current assets	29,413		28,450
Total current assets	689,182		712,725
Property, equipment and software, net	92,627		101,718
Operating lease right-of-use assets	143,617		168,209
Goodwill	107,630		109,261
Intangibles, net	12,095		13,521
Restricted cash	1,027		665
Other non-current assets	59,066		48,848
Total assets	$	1,105,244	$	1,154,947
Liabilities and Stockholders' Equity
Current liabilities:
Accounts payable and accrued liabilities	$	106,190	$	87,760
Operating lease liabilities — current	47,858		51,161
Deferred revenue	5,175		4,109
Total current liabilities	159,223		143,030
Operating lease liabilities — long-term	134,448		148,935
Other long-term liabilities	8,109		8,448
Total liabilities	301,780		300,413
Commitments and contingencies (Note 12)
Stockholders' equity:
Common stock, $0.000001 par value — 200,000,000 shares authorized, 74,589,907 shares issued and 74,486,037 shares outstanding at June 30, 2021, and 75,371,368 shares issued and 75,272,350 shares outstanding at December 31, 2020	—		—
Additional paid-in capital	1,464,490		1,398,248
Treasury stock	(4,250)		(2,964)
Accumulated other comprehensive loss	(8,378)		(6,807)
Accumulated deficit	(648,398)		(533,943)
Total stockholders' equity	803,464		854,534
Total liabilities and stockholders' equity	$	1,105,244	$	1,154,947

See Notes to Condensed Consolidated Financial Statements.

4

YELP INC.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(In thousands, except per share data)

(Unaudited)

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Net revenue	$	257,188	$	169,030	$	489,284	$	418,931
Costs and expenses:
Cost of revenue (exclusive of depreciation and amortization shown separately below)	17,993		11,825		32,867		28,672
Sales and marketing	113,641		96,289		226,550		233,586
Product development	68,695		53,969		136,687		121,082
General and administrative	45,095		26,402		76,956		69,938
Depreciation and amortization	12,833		12,582		25,916		24,940
Restructuring	12		3,312		32		3,312
Total costs and expenses	258,269		204,379		499,008		481,530
Loss from operations	(1,081)		(35,349)		(9,724)		(62,599)
Other income, net	542		495		1,247		2,878
Loss before income taxes	(539)		(34,854)		(8,477)		(59,721)
Benefit from income taxes	(4,751)		(10,864)		(6,893)		(20,228)
Net income (loss) attributable to common stockholders	$	4,212	$	(23,990)	$	(1,584)	$	(39,493)
Net income (loss) per share attributable to common stockholders
Basic	$	0.06	$	(0.33)	$	(0.02)	$	(0.55)
Diluted	$	0.05	$	(0.33)	$	(0.02)	$	(0.55)
Weighted-average shares used to compute net income (loss) per share attributable to common stockholders
Basic	74,807		72,413		75,025		71,980
Diluted	78,983		72,413		75,025		71,980

See Notes to Condensed Consolidated Financial Statements.

5

YELP INC.

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

(In thousands)

(Unaudited)

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Net income (loss)	$	4,212	$	(23,990)	$	(1,584)	$	(39,493)
Other comprehensive income (loss):
Foreign currency translation adjustments, net of tax	1,181		1,018		(1,571)		(86)
Other comprehensive income (loss)	1,181		1,018		(1,571)		(86)
Comprehensive income (loss)	$	5,393	$	(22,972)	$	(3,155)	$	(39,579)

See Notes to Condensed Consolidated Financial Statements.

6

YELP INC.

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY

(In thousands, except share data)

(Unaudited)

	Common Stock			Additional Paid-In Capital		Treasury Stock		Accumulated Other Comprehensive Loss		Accumulated Deficit		Total Stockholders' Equity
	Shares	Amount
Balance as of March 31, 2020	71,887,846	$	—	$	1,283,885	$	—	$	(12,863)	$	(508,590)	$	762,432
Issuance of common stock upon exercises of employee stock options	21,510	—		209		—		—		—		209
Issuance of common stock upon vesting of restricted stock units ("RSUs")	778,176	—		—		—		—		—		—
Issuance of common stock for employee stock purchase plan	433,697	—		8,014		—		—		—		8,014
Stock-based compensation (inclusive of capitalized stock-based compensation)	—	—		33,637		—		—		—		33,637
Foreign currency adjustments, net of tax	—	—		—		—		1,018		—		1,018
Net loss	—	—		—		—		—		(23,990)		(23,990)
Balance as of June 30, 2020	73,121,229	$	—	$	1,325,745	$	—	$	(11,845)	$	(532,580)	$	781,320
Balance as of March 31, 2021	75,153,089	$	—	$	1,428,890	$	(3,313)	$	(9,559)	$	(588,918)	$	827,100
Issuance of common stock upon exercises of employee stock options	40,979	—		863		—		—		—		863
Issuance of common stock upon vesting of RSUs	744,337	—		—		—		—		—		—
Issuance of common stock for employee stock purchase plan	254,449	—		8,675		—		—		—		8,675
Stock-based compensation (inclusive of capitalized stock-based compensation)	—	—		44,174		—		—		—		44,174
Shares withheld related to net share settlement of equity awards	—	—		(18,112)		—		—		—		(18,112)
Repurchases of common stock	—	—		—		(64,629)		—		—		(64,629)
Retirement of common stock	(1,602,947)	—		—		63,692		—		(63,692)		—
Foreign currency adjustments, net of tax	—	—		—		—		1,181		—		1,181
Net income	—	—		—		—		—		4,212		4,212
Balance as of June 30, 2021	74,589,907	$	—	$	1,464,490	$	(4,250)	$	(8,378)	$	(648,398)	$	803,464

See Notes to Condensed Consolidated Financial Statements.

7

YELP INC.

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (CONTINUED)

(In thousands, except share data)

(Unaudited)

	Common Stock			Additional Paid-In Capital		Treasury Stock		Accumulated Other Comprehensive Loss		Accumulated Deficit		Total Stockholders' Equity
	Shares	Amount
Balance as of December 31, 2019	71,185,468	$	—	$	1,259,803	$	—	$	(11,759)	$	(493,053)	$	754,991
Cumulative effect adjustment upon adoption of ASU 2016-13	—	—		—		—		—		(34)		(34)
Issuance of common stock upon exercises of employee stock options	222,357	—		2,794		—		—		—		2,794
Issuance of common stock upon vesting of RSUs	1,279,707	—		—		—		—		—		—
Issuance of common stock for employee stock purchase plan	433,697	—		8,014		—		—		—		8,014
Stock-based compensation (inclusive of capitalized stock-based compensation)	—	—		66,886		—		—		—		66,886
Shares withheld related to net share settlement of equity awards	—	—		(11,752)		—		—		—		(11,752)
Foreign currency adjustments, net of tax	—	—		—		—		(86)		—		(86)
Net loss	—	—		—		—		—		(39,493)		(39,493)
Balance as of June 30, 2020	73,121,229	$	—	$	1,325,745	$	—	$	(11,845)	$	(532,580)	$	781,320
Balance as of December 31, 2020	75,371,368	$	—	$	1,398,248	$	(2,964)	$	(6,807)	$	(533,943)	$	854,534
Issuance of common stock upon exercises of employee stock options	564,923	—		6,912		—		—		—		6,912
Issuance of common stock upon vesting of RSUs	1,414,302	—		—		—		—		—		—
Issuance of common stock for employee stock purchase plan	254,449	—		8,675		—		—		—		8,675
Stock-based compensation (inclusive of capitalized stock-based compensation)	—	—		85,693		—		—		—		85,693
Shares withheld related to net share settlement of equity awards	—	—		(35,038)		—		—		—		(35,038)
Repurchases of common stock	—	—		—		(114,157)		—		—		(114,157)
Retirement of common stock	(3,015,135)	—		—		112,871		—		(112,871)		—
Foreign currency adjustments, net of tax	—	—		—		—		(1,571)		—		(1,571)
Net loss	—	—		—		—		—		(1,584)		(1,584)
Balance as of June 30, 2021	74,589,907	$	—	$	1,464,490	$	(4,250)	$	(8,378)	$	(648,398)	$	803,464

See Notes to Condensed Consolidated Financial Statements.

8

YELP INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(In thousands)

(Unaudited)

	Six Months Ended June 30,
	2021		2020
Operating Activities
Net loss	$	(1,584)	$	(39,493)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	25,916		24,940
Provision for doubtful accounts	7,240		21,897
Stock-based compensation	80,104		62,335
Noncash lease cost	20,712		20,984
Deferred income taxes	(7,755)		(14,263)
Asset impairment	11,164		—
Other adjustments, net	386		876
Changes in operating assets and liabilities:
Accounts receivable	(20,382)		12,910
Prepaid expenses and other assets	88		604
Operating lease liabilities	(22,489)		(22,520)
Accounts payable, accrued liabilities and other liabilities	15,707		(11,021)
Net cash provided by operating activities	109,107		57,249
Investing Activities
Sales and maturities of marketable securities — available-for-sale	—		290,395
Purchases of marketable securities — held-to-maturity	—		(87,438)
Maturities of marketable securities — held-to-maturity	—		93,200
Purchases of property, equipment and software	(13,286)		(17,004)
Other investing activities	90		328
Net cash (used in) provided by investing activities	(13,196)		279,481
Financing Activities
Proceeds from issuance of common stock for employee stock-based plans	15,587		10,808
Taxes paid related to the net share settlement of equity awards	(34,824)		(12,557)
Repurchases of common stock	(114,157)		—
Other financing activities	—		(356)
Net cash used in financing activities	(133,394)		(2,105)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	197		(340)
Change in cash, cash equivalents and restricted cash	(37,286)		334,285
Cash, cash equivalents and restricted cash — Beginning of period	596,540		192,318
Cash, cash equivalents and restricted cash — End of period	$	559,254	$	526,603
Supplemental Disclosures of Other Cash Flow Information
Refunds received for income taxes, net	$	(586)	$	(298)
Supplemental Disclosures of Noncash Investing and Financing Activities
Purchases of property, equipment and software recorded in accounts payable and accrued liabilities	$	1,295	$	615
Tax liabilities related to equity awards included in accounts payable and accrued liabilities	$	21	$	—
Operating lease right-of-use assets obtained in exchange for new operating lease liabilities	$	4,497	$	11,833
Repurchases of common stock recorded in accounts payable and accrued liabilities	$	3,444	$	—

See Notes to Condensed Consolidated Financial Statements.

9

YELP INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

1. DESCRIPTION OF BUSINESS AND BASIS FOR PRESENTATION

Yelp Inc. was incorporated in Delaware on September 3, 2004. Except where specifically noted or the context otherwise requires, the use of terms such as the "Company" and "Yelp" in these Notes to Condensed Consolidated Financial Statements refers to Yelp Inc. and its subsidiaries.

Yelp is a trusted local resource for consumers and a partner in success for businesses of all sizes. Consumers trust Yelp for its extensive ratings and reviews of businesses across a broad range of categories, while businesses advertise on Yelp to reach its large audience of purchase-oriented and generally affluent consumers.

Basis of Presentation

The accompanying interim condensed consolidated financial statements are unaudited. These unaudited interim condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") and the applicable rules and regulations of the U.S. Securities and Exchange Commission ("SEC") regarding interim financial reporting. Certain information and note disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. Accordingly, these unaudited interim condensed consolidated financial statements should be read in conjunction with the consolidated financial statements contained in the Annual Report.

The unaudited condensed consolidated balance sheet as of December 31, 2020 included herein was derived from the audited consolidated financial statements as of that date, but does not include all disclosures required by GAAP, including certain notes to the financial statements. The unaudited interim condensed consolidated financial statements have been prepared on the same basis as the audited consolidated financial statements, except as set forth under "Recently Adopted Accounting Pronouncements" below.

In the opinion of management, the accompanying unaudited condensed consolidated financial statements include all adjustments of a normally recurring nature necessary for the fair presentation of the interim periods presented.

Principles of Consolidation

These unaudited interim condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany accounts and transactions have been eliminated upon consolidation.

Use of Estimates

The preparation of the Company’s unaudited interim condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of income and expenses during the reporting period. These estimates are based on information available as of the date of the condensed consolidated financial statements; therefore, actual results could differ from management’s estimates.

In early March 2020, COVID-19 was declared a global pandemic by the World Health Organization. Governments around the world, including in the United States, have implemented extensive measures in an effort to control the spread of COVID-19, including travel restrictions, limitations on business activity, quarantines and shelter-in-place orders. Due to the COVID-19 pandemic and the uncertainty of the extent of the impacts, certain estimates and assumptions have required and may continue to require increased judgment and carry a higher degree of variability and volatility than they did prior to the pandemic. As events continue to evolve and additional information becomes available, these estimates may materially change in future periods.

Significant Accounting Policies

There have been no material changes to the Company's significant accounting policies from those described in the Annual Report.

10

Recently Adopted Accounting Pronouncements

In December 2019, the Financial Accounting Standards Board issued Accounting Standards Update No. 2019-12, "Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes" ("ASU 2019-12"), which simplifies the accounting for income taxes by removing certain exceptions to the general principles for recording income taxes, while also simplifying certain recognition and allocation approaches to accounting for income taxes. The Company adopted ASU 2019-12 on January 1, 2021, and the adoption did not have a material impact on its consolidated financial statements.

2. CASH, CASH EQUIVALENTS AND RESTRICTED CASH

Cash, cash equivalents and restricted cash as of June 30, 2021 and December 31, 2020 consisted of the following (in thousands):

	June 30, 2021		December 31, 2020
Cash	$	47,911	$	85,750
Cash equivalents	510,316		510,125
Total cash and cash equivalents	$	558,227	$	595,875
Restricted cash	1,027		665
Total cash, cash equivalents and restricted cash	$	559,254	$	596,540

3. FAIR VALUE MEASUREMENTS

The Company’s investments in money market accounts are recorded as cash equivalents at fair value on the condensed consolidated balance sheets.

The accounting guidance for fair value measurements prioritizes the inputs used in measuring fair value in the following hierarchy:

Level 1—Observable inputs, such as quoted prices in active markets,

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

Level 3—Unobservable inputs in which there are little or no market data, which require the Company to develop its own assumptions.

This hierarchy requires the Company to use observable market data, when available, to minimize the use of unobservable inputs when determining fair value. The Company’s money market funds are classified within Level 1 of the fair value hierarchy because they are valued using quoted prices in active markets. The Company's certificates of deposit are classified within Level 2 of the fair value hierarchy because they have been valued using inputs other than quoted prices in active markets that are observable directly or indirectly.

The following table represents the fair value of the Company’s financial instruments, including those measured at fair value on a recurring basis, as of June 30, 2021 and December 31, 2020 (in thousands):

	June 30, 2021								December 31, 2020
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds	$	510,316	$	—	$	—	$	510,316	$	510,125	$	—	$	—	$	510,125
Other investments:
Certificates of deposit	—		10,000		—		10,000		—		10,933		—		10,933
Total cash equivalents and other investments	$	510,316	$	10,000	$	—	$	520,316	$	510,125	$	10,933	$	—	$	521,058

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The certificates of deposit are reflected in prepaid expenses and other current assets on the condensed consolidated balance sheets as of June 30, 2021 and December 31, 2020.

The Company's long- and indefinite-lived assets, such as property, equipment and software, goodwill and other intangible assets, are measured at fair value on a non-recurring basis if the assets are determined to be impaired. The Company recognized an impairment charge related to right-of-use ("ROU") assets and leasehold improvements associated with certain of its operating leases that it subleased during the three months ended June 30, 2021. See Note 8, "Leases," for further details. The Company estimated the fair value of these assets as of the effective dates of the agreements using an income approach based on expected future cash flows from the subleased properties, which relied on certain assumptions made by management based on both internal and external data, such as the incremental borrowing rates used to discount these cash flows to its present values. As a result, these assets are classified within Level 3 of the fair value hierarchy.

4. MARKETABLE SECURITIES

In March 2020, the Company changed its investment strategy in response to uncertainties resulting from the COVID-19 pandemic to allow for more flexibility in preserving liquidity, which led to the transfer of $300.2 million of amortized cost of its investment portfolio from a held-to-maturity classification to available-for-sale. As a result of this transfer, in March 2020, the Company reversed the allowance for credit loss that had been previously recorded upon adoption of Accounting Standards Update No. 2016-13, "Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments," and measured the securities at fair value as of the transfer date by recording an immaterial allowance for credit loss to other income, net and the remaining adjustment as an immaterial unrealized loss recorded to other comprehensive income.

Following this transfer, during the six months ended June 30, 2020, the Company liquidated its investment portfolio, which consisted of available-for-sale short- and long-term marketable securities, for proceeds of $253.4 million. The Company recorded an immaterial net realized gain to other income, net and reinvested the proceeds from the sales, along with $73.0 million from maturities and redemptions of marketable securities, into money market funds.

As of June 30, 2021 and December 31, 2020, the Company did not have any marketable securities and a majority of the Company's investments were in highly liquid money market funds.

5. PREPAID EXPENSES AND OTHER CURRENT ASSETS

Prepaid expenses and other current assets as of June 30, 2021 and December 31, 2020 consisted of the following (in thousands):

	June 30, 2021		December 31, 2020
Prepaid expenses	$	12,026	$	10,438
Certificates of deposit	10,000		10,930
Other current assets	7,387		7,082
Total prepaid expenses and other current assets	$	29,413	$	28,450

Prepaid expenses included $0.8 million of capitalized implementation costs incurred related to cloud computing arrangements that are service contracts. The Company recorded an immaterial amount of amortization expense during the three and six months ended June 30, 2021 related to these capitalized implementation costs. As of June 30, 2021, other current assets primarily consisted of deferred costs related to unsettled share repurchases, short-term deposits and non-trade receivables.

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6. PROPERTY, EQUIPMENT AND SOFTWARE, NET

Property, equipment and software, net as of June 30, 2021 and December 31, 2020 consisted of the following (in thousands):

	June 30, 2021		December 31, 2020
Capitalized website and internal-use software development costs	$	187,418	$	171,831
Leasehold improvements(1)	81,776		88,687
Computer equipment	46,223		46,581
Furniture and fixtures	16,466		18,339
Telecommunication	4,965		4,951
Software	1,718		1,717
Total	338,566		332,106
Less accumulated depreciation	(245,939)		(230,388)
Property, equipment and software, net	$	92,627	$	101,718

(1) The cost basis was reduced to reflect an impairment of $2.7 million recorded during the three months ended June 30, 2021. For more information, see Note 8, "Leases."

Depreciation expense was $12.1 million and $12.0 million for the three months ended June 30, 2021 and 2020, respectively, and $24.5 million and $23.7 million for the six months ended June 30, 2021 and 2020, respectively.

7. GOODWILL AND INTANGIBLE ASSETS

The Company’s goodwill is the result of its acquisitions of other businesses, and represents the excess of purchase consideration over the fair value of assets acquired and liabilities assumed. The Company performed its annual goodwill impairment analysis as of August 31, 2020 and concluded that goodwill was not impaired, as the fair value of the reporting unit exceeded its carrying value.

The changes in carrying amount of goodwill during the six months ended June 30, 2021 were as follows (in thousands):

Balance as of December 31, 2020	$	109,261
Effect of currency translation	(1,631)
Balance as of June 30, 2021	$	107,630

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Intangible assets that were not fully amortized as of June 30, 2021 and December 31, 2020 consisted of the following (dollars in thousands):

	June 30, 2021
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Weighted Average Remaining Life
Business relationships	$	9,918	$	(4,299)	$	5,619	7.4	years
Developed technology	7,709		(6,846)		863		0.7	years
Licensing agreements	6,129		(538)		5,591		8.7	years
Domains and data licenses	2,869		(2,847)		22		2.0	years
Total	$	26,625	$	(14,530)	$	12,095

	December 31, 2020
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Weighted Average Remaining Life
Business relationships	$	9,918	$	(3,814)	$	6,104	7.8	years
Developed technology	7,709		(6,238)		1,471		1.2	years
Licensing agreements	6,129		(215)		5,914		9.2	years
Domain and data licenses	2,869		(2,837)		32		2.2	years
Total	$	26,625	$	(13,104)	$	13,521

Amortization expense was $0.7 million and $0.6 million for the three months ended June 30, 2021 and 2020, respectively, and $1.4 million and $1.2 million for the six months ended June 30, 2021 and 2020, respectively.

As of June 30, 2021, estimated future amortization expenses were as follows (in thousands):

Remainder of 2021	$	1,422
2022	1,676
2023	1,359
2024	1,353
2025	1,353
2026	1,353
Thereafter	3,579
Total amortization	$	12,095

8. LEASES

The components of lease cost, net for the three and six months ended June 30, 2021 and 2020 were as follows (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Operating lease cost	$	12,631	$	13,987	$	26,394	$	27,798
Short-term lease cost (12 months or less)	136		341		273		701
Sublease income	(1,778)		(1,954)		(3,406)		(3,914)
Total lease cost, net	$	10,989	$	12,374	$	23,261	$	24,585

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The Company's leases and subleases do not include any variable lease payments, residual value guarantees, related-party leases, or restrictions or covenants that would limit or prevent the Company from exercising its right to obtain substantially all of the economic benefits from use of the respective assets during the lease term.

Supplemental cash flow information related to leases for the six months ended June 30, 2021 and 2020 was as follows (in thousands):

	Six Months Ended June 30,
	2021		2020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	27,784	$	29,749

As of June 30, 2021, maturities of lease liabilities were as follows (in thousands):

Remainder of 2021	$	24,602
2022	48,688
2023	45,801
2024	43,028
2025	22,459
2026	7,502
Thereafter	17,075
Total minimum lease payments	209,155
Less imputed interest	(26,849)
Present value of lease liabilities	$	182,306

As of June 30, 2021 and December 31, 2020, the weighted-average remaining lease terms and weighted-average discount rates were as follows:

	June 30, 2021	December 31, 2020
Weighted-average remaining lease term (years) — operating leases	4.8	5.1
Weighted-average discount rate — operating leases	5.9 %	6.0	%

In October 2020, the Company entered into a lease agreement for an office facility in Toronto, Canada for which the lease term is expected to commence in August 2021 and expire in 2031. The Company expects to classify this as an operating lease and, as of June 30, 2021, expected to recognize operating lease cost of approximately $9.7 million over the life of the lease.

During the three months ended June 30, 2021, the Company entered into sublease agreements for portions of its office space in San Francisco and New York. The Company evaluated the associated ROU assets and leasehold improvements for impairment as a result of the subleases in accordance with Accounting Standards Codification Topic 360, "Property, Plant, and Equipment" because the change in circumstances indicated that the carrying amount of such assets may not be recoverable. The Company compared the future undiscounted cash flows under the sublease agreements to the carrying amounts of the respective ROU assets and leasehold improvements and determined that an impairment existed.

The Company compared the carrying values of the impacted assets to the fair values to determine the impairment amount. The Company recognized an impairment charge of $11.2 million during the three months ended June 30, 2021, which is included in general and administrative expenses on its condensed consolidated statement of operations, and reduced the carrying amount of the ROU assets and leasehold improvements by $8.5 million and $2.7 million, respectively. For more information on the fair values of the ROU assets and leasehold improvements used in the impairment analysis, see Note 3, "Fair Value Measurements."

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9. OTHER NON-CURRENT ASSETS

Other non-current assets as of June 30, 2021 and December 31, 2020 consisted of the following (in thousands):

	June 30, 2021		December 31, 2020
Deferred tax assets	$	39,013	$	31,163
Deferred contract costs	15,413		14,522
Other non-current assets	4,640		3,163
Total other non-current assets	$	59,066	$	48,848

Deferred contract costs as of June 30, 2021 and December 31, 2020, and changes in deferred contract costs during the six months ended June 30, 2021, were as follows (in thousands):

	Six Months Ended June 30, 2021
Balance, beginning of period	$	14,522
Add: costs deferred on new contracts	7,721
Less: amortization recorded in sales and marketing expenses	(6,830)
Balance, end of period	$	15,413

10. CONTRACT BALANCES

The changes in the allowance for doubtful accounts during the six months ended June 30, 2021 and 2020 were as follows (in thousands):

	Six Months Ended June 30,
	2021		2020
Balance, beginning of period	$	11,559	$	7,686
Add: provision for doubtful accounts	7,240		21,897
Less: write-offs, net of recoveries	(9,510)		(17,876)
Balance, end of period	$	9,289	$	11,707

The net decrease in the allowance for doubtful accounts in the six months ended June 30, 2021 was primarily a result of a reduction in expected customer delinquencies compared to June 30, 2020, as collection rates continued to improve. The net increase in the allowance for doubtful accounts in the six months ended June 30, 2020 primarily related to an anticipated increase in customer delinquencies due to the COVID-19 pandemic. In calculating the allowance for doubtful accounts as of June 30, 2021 and 2020, the Company considered expectations of probable credit losses, including probable credit losses associated with the COVID-19 pandemic, based on observed trends in cancellations, observed changes in the credit risk of specific customers, the impact of anticipated closures and bankruptcies using forecasted economic indicators in addition to historical experience and loss patterns during periods of macroeconomic uncertainty.

Contract liabilities consist of deferred revenue, which is recorded on the condensed consolidated balance sheets when the Company has received consideration, or has the right to receive consideration, in advance of transferring the performance obligations under the contract to the customer.

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The changes in deferred revenue during the six months ended June 30, 2021 were as follows (in thousands):

	Six Months Ended June 30, 2021
Balance, beginning of period	$	4,109
Less: recognition of deferred revenue from beginning balance	(2,759)
Add: net increase in current period contract liabilities	3,825
Balance, end of period	$	5,175

The majority of the deferred revenue balance as of June 30, 2021 is expected to be recognized as revenue in the subsequent three-month period ending September 30, 2021. No other contract assets or liabilities were recorded on the Company's condensed consolidated balance sheets as of June 30, 2021 and December 31, 2020.

11. ACCOUNTS PAYABLE AND ACCRUED LIABILITIES

Accounts payable and accrued liabilities as of June 30, 2021 and December 31, 2020 consisted of the following (in thousands):

	June 30, 2021		December 31, 2020
Accounts payable	$	14,373	$	8,853
Employee-related liabilities	66,225		57,684
Accrued sales and marketing expenses	8,042		2,137
Accrued cost of revenue	5,381		8,269
Other accrued liabilities	12,169		10,817
Total accounts payable and accrued liabilities	$	106,190	$	87,760

12. COMMITMENTS AND CONTINGENCIES

Legal Proceedings—In January 2018, a putative class action lawsuit alleging violations of the federal securities laws was filed in the U.S. District Court for the Northern District of California, naming as defendants the Company and certain of its officers. The complaint, which the plaintiff amended on June 25, 2018, alleges violations of the Exchange Act by the Company and its officers for allegedly making materially false and misleading statements regarding its business and operations on February 9, 2017. The plaintiff seeks unspecified monetary damages and other relief. On August 2, 2018, the Company and the other defendants filed a motion to dismiss the amended complaint, which the court granted in part and denied in part on November 27, 2018. On October 22, 2019, the Court approved a stipulation to certify a class in this action. The case remains pending. The Company is unable to reasonably estimate either the probability of incurring a loss or an estimated range of such loss, if any, from the lawsuit.

The Company is subject to other legal proceedings arising in the ordinary course of business. Although the results of litigation and claims cannot be predicted with certainty, the Company currently does not believe that the final outcome of any of these other matters will have a material effect on the Company’s business, financial position, results of operations or cash flows.

Indemnification Agreements—In the ordinary course of business, the Company may provide indemnifications of varying scope and terms to customers, vendors, lessors, business partners and other parties with respect to certain matters, including, but not limited to, losses arising out of breach of such agreements, services to be provided by the Company or from intellectual property infringement claims made by third parties.

In addition, the Company has entered into indemnification agreements with directors and certain officers and employees that will require the Company to, among other things, indemnify them against certain liabilities that may arise by reason of their status or service as directors, officers or employees.

While the outcome of claims cannot be predicted with certainty, the Company does not believe that the outcome of any claims under the indemnification arrangements will have a material effect on the Company’s business, financial position, results of operations or cash flows.

Revolving Credit Facility—The Company is a party to a Credit Agreement with Wells Fargo Bank, National Association (the "Credit Agreement"), which provides for a three-year, $75.0 million senior unsecured revolving credit facility including a

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letter of credit sub-limit of $25.0 million. As of June 30, 2021, the Company had $21.5 million of letters of credit under the sub-limit related to lease agreements for certain office locations, which are required to be maintained and issued to the landlords of each facility, and $53.5 million remained available under the revolving credit facility as of this date. The Company was in compliance with all covenants associated with the credit facility and there were no loans outstanding under the Credit Agreement as of June 30, 2021. For additional information on the terms of the Credit Agreement, including fees payable by the Company, financial covenants, events of default and other limitations, see "Management's Discussion and Analysis of Financial Condition and Results of Operations—Liquidity and Capital Resources" included under Part II, Item 7 in our Annual Report.

13. STOCKHOLDERS’ EQUITY

The following table presents the number of shares authorized and issued as of the dates indicated:

	June 30, 2021		December 31, 2020
	Shares Authorized	Shares Issued	Shares Authorized	Shares Issued
Stockholders’ equity:
Common stock, $0.000001 par value	200,000,000	74,589,907	200,000,000	75,371,368
Undesignated preferred stock	10,000,000	—	10,000,000	—

Stock Repurchase Program

In July 2017, the Company’s board of directors authorized a stock repurchase program under which the Company was authorized to repurchase up to $200.0 million of its outstanding common stock. The Company's board of directors authorized the Company to repurchase up to an additional $250.0 million of its outstanding common stock in each of November 2018, February 2019, and January 2020, bringing the total amount of authorized repurchases to $950.0 million as of June 30, 2021, $130.4 million of which remained available as of June 30, 2021. The Company may purchase shares at management’s discretion in the open market, in privately negotiated transactions, in transactions structured through investment banking institutions, or a combination of the foregoing.

During the six months ended June 30, 2021, the Company repurchased on the open market 3,019,987 shares for an aggregate purchase price of $114.2 million and retired 3,015,135 shares. As of June 30, 2021, the Company had a treasury stock balance of 103,870 shares, which were excluded from its outstanding share count as of such date and subsequently retired in July 2021.

The Company did not repurchase any shares during the six months ended June 30, 2020.

Equity Incentive Plans

Stock Options

Stock options are granted at a price per share not less than the fair value of a share of the Company’s common stock on the grant date. Options generally vest over a four-year period, on one of two schedules: (a) 25% vesting at the end of one year and the remaining shares vesting monthly thereafter or (b) ratably on a monthly basis. Options granted are generally exercisable for contractual terms of up to 10 years. The Company issues new shares when stock options are exercised.

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A summary of stock option activity for the six months ended June 30, 2021 is as follows:

	Number of Shares	Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Term (in years)	Aggregate Intrinsic Value (in thousands)
Outstanding at December 31, 2020	4,622,828	$	29.89	4.7	$	30,451
Granted	80,000	39.17
Exercised	(564,923)	12.24
Canceled	(29,275)	49.09
Outstanding at June 30, 2021	4,108,630	$	32.36	4.8	$	38,326
Options vested and exercisable at June 30, 2021	3,632,114	$	31.80	4.4	$	36,462

Aggregate intrinsic value represents the difference between the closing price of the Company’s common stock as quoted on the New York Stock Exchange on a given date and the exercise price of outstanding, in-the-money options. The total intrinsic value of options exercised was approximately $0.7 million and $0.2 million for the three months ended June 30, 2021 and 2020, respectively, and $11.8 million and $4.4 million for the six months ended June 30, 2021 and 2020, respectively.

The weighted-average grant date fair value of options granted during the three and six months ended June 30, 2021 was $18.55 per share. There were no options granted during the three months ended June 30, 2020. The weighted-average grant date fair value of options granted during the six months ended June 30, 2020 was $11.13 per share.

As of June 30, 2021, total unrecognized compensation costs related to nonvested stock options were approximately $7.5 million, which the Company expects to recognize over a weighted-average time period of 2.0 years.

RSUs

RSUs generally vest over a four-year period, on one of two schedules: (a) 25% vesting at the end of one year and the remaining vesting quarterly thereafter or (b) ratably on a quarterly basis.

RSUs also include performance-based restricted stock units ("PRSUs"), which are subject to both a time-based vesting schedule and either (a) a market condition or (b) the achievement of performance goals. The time-based vesting schedule is quarterly over four years (the "Time-Based Vesting Schedule"). For PRSUs subject to a market condition, the Company recognizes expense from the date of grant. For PRSUs subject to performance goals, the Company recognizes expense when it is probable that the performance condition will be achieved.

The shares underlying each PRSU award subject to a market condition will be eligible to vest only if the average closing price of the Company's common stock equals or exceeds $45.3125 over any 60-day trading period during the four years following the grant date of February 7, 2019. If this market condition is met, the shares underlying each PRSU award will vest according to the Time-Based Vesting Schedule. Any shares subject to the PRSUs that have met the Time-Based Vesting Schedule at the time the market condition is achieved will fully vest as of such date; thereafter, any remaining nonvested shares subject to the PRSUs will continue vesting solely according to the Time-Based Vesting Schedule, subject to the applicable employee's continued service as of each such vesting date.

For PRSUs subject to performance goals, a percentage of the target number of shares, ranging from zero to 200%, will become eligible to vest based on the Company's level of achievement of certain financial targets, subject to the Time-Based Vesting Schedule. The shares subject to performance goals become eligible to vest once the achievement against the financial targets is known, which will be no later than March of the following year. On the quarterly vest date immediately following such determination (or a vest date otherwise specified in the agreement), the eligible shares, if any, will vest to the extent that the employee has met the Time-Based Vesting Schedule as of such date. Thereafter, the eligible shares will continue to vest in accordance with the Time-Based Vesting Schedule, subject to the applicable employee's continued service as of each such vesting date. The Company performed an analysis as of June 30, 2021 to assess the probability of achievement of the PRSU financial targets and, as a result, recorded compensation costs in the three and six months ended June 30, 2021 for the PRSUs that it expected to vest.

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As the PRSU activity during the six months ended June 30, 2021 was not material, it is presented together with the RSU activity in the table below. A summary of RSU and PRSU activity for the six months ended June 30, 2021 is as follows:

	Number of Shares	Weighted-Average Grant Date Fair Value
Nonvested at December 31, 2020	9,757,787	$	29.22
Granted	4,909,615	36.10
Vested(1)	(2,337,449)	31.84
Canceled	(1,331,918)	31.62
Nonvested at June 30, 2021	10,998,035	$	31.44

(1) Includes 923,147 shares that vested but were not issued due to net share settlement for payment of employee taxes.

The aggregate fair value as of the vest date of RSUs and PRSUs that vested during the six months ended June 30, 2021 and 2020 was $88.7 million and $46.1 million, respectively. As of June 30, 2021, the Company had approximately $336.6 million of unrecognized stock-based compensation expense related to RSUs and PRUSs, which it expects to recognize over the remaining weighted-average vesting period of approximately 2.8 years.

Employee Stock Purchase Plan

The Employee Stock Purchase Plan ("ESPP") allows eligible employees to purchase shares of the Company’s common stock at a discount through payroll deductions of up to 15% of their eligible compensation, subject to any plan limitations, during designated offering periods. At the end of each offering period, employees are able to purchase shares at 85% of the fair market value of the Company’s common stock on the last day of the offering period, based on the closing sales price of the Company's common stock as quoted on the New York Stock Exchange on such date.

There were 254,449 shares purchased by employees under the ESPP at a weighted-average price of $34.09 in the three and six months ended June 30, 2021. There were 433,697 shares purchased by employees under the ESPP at a weighted-average price of $18.48 in the three and six months ended June 30, 2020. The Company recognized stock-based compensation expense related to the ESPP of $0.7 million and $0.5 million in the three months ended June 30, 2021 and 2020, respectively, and $1.5 million and $1.3 million for the six months ended June 30, 2021 and 2020, respectively.

Stock-Based Compensation

The following table summarizes the effects of stock-based compensation expense related to stock-based awards in the condensed consolidated statements of operations during the periods presented (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Cost of revenue	$	1,094	$	943	$	2,202	$	1,986
Sales and marketing	8,441		7,302		16,838		14,998
Product development	20,674		16,827		41,427		34,582
General and administrative	10,650		5,513		19,637		10,769
Total stock-based compensation recorded to loss before income taxes	40,859		30,585		80,104		62,335
Benefit from income taxes	(9,501)		(11,652)		(19,566)		(24,209)
Total stock-based compensation recorded to net income (loss)	$	31,358	$	18,933	$	60,538	$	38,126

The Company capitalized $2.8 million and $2.2 million of stock-based compensation expense as website development costs in the three months ended June 30, 2021 and 2020, respectively, and $5.5 million and $4.5 million in the six months ended June 30, 2021 and 2020, respectively.

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14. OTHER INCOME, NET

Other income, net for the three and six months ended June 30, 2021 and 2020 consisted of the following (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Interest (expense) income, net	$	(34)	$	191	$	(51)	$	2,297
Transaction gain (loss) on foreign exchange	11		8		268		(60)
Other non-operating income, net	565		296		1,030		641
Other income, net	$	542	$	495	$	1,247	$	2,878

15. INCOME TAXES

The Company is subject to income tax in the United States as well as other tax jurisdictions in which it conducts business. Earnings from non-U.S. activities are subject to local country income tax. The benefit from income taxes for the six months ended June 30, 2021 was $6.9 million, which was due to $1.5 million of U.S. federal, state and foreign income tax benefit and $5.4 million of net discrete tax benefit primarily related to stock-based compensation. The benefit from income taxes for the six months ended June 30, 2020 was $20.2 million, which was due to $24.3 million of U.S. federal, state and foreign income tax benefit, offset by $4.1 million of net discrete tax expense.

On March 27, 2020, the Coronavirus Aid, Relief, and Economic Security Act (the "CARES Act") was signed into law. The CARES Act includes, among other items, provisions relating to refundable payroll tax credits, deferral of the employer portion of certain payroll taxes, net operating loss carryback periods, alternative minimum tax credit refunds, modifications to the net interest deduction limitations and technical corrections to tax depreciation methods for qualified improvement property.

The CARES Act allows losses incurred in 2018, 2019 and 2020 to be carried back to each of the five preceding tax years and to offset 100% of regular taxable income. Additionally, the CARES Act accelerates the Company’s ability to receive refunds of alternative minimum tax credits generated in prior tax years.

Accounting for income taxes for interim periods generally requires the provision for income taxes to be determined by applying an estimate of the annual effective tax rate for the full fiscal year to income or loss before income taxes, excluding unusual or infrequently occurring discrete items ("Ordinary" income), for the reporting period. For the three and six months ended June 30, 2021, the difference between the effective tax rate and the federal statutory tax rate primarily related to tax credits, offset by non-deductible expenses. For the three and six months ended June 30, 2020, the difference between the effective tax rate and the federal statutory tax rate primarily related to net operating loss provisions adopted under the CARES Act and tax credits.

As of June 30, 2021, the total amount of gross unrecognized tax benefits was $52.4 million, $22.8 million of which was subject to a full valuation allowance and would not affect the Company’s effective tax rate if recognized. In the three and six months ended June 30, 2021, the Company recorded an immaterial amount of interest and penalties.

As of June 30, 2021, the Company estimated that it had accumulated undistributed earnings generated by its foreign subsidiaries of approximately $8.0 million. Any taxes due with respect to such earnings or the excess of the amount for financial reporting over the tax basis of the Company's foreign investments would generally be limited to foreign and state taxes. The Company has not recognized a deferred tax liability related to un-remitted foreign earnings, as it intends to indefinitely reinvest these earnings, and expects future U.S. cash generation to be sufficient to meet future U.S. cash needs.

In addition, the Company is subject to the continuous examination of its income tax returns by the Internal Revenue Service and other tax authorities. The Company’s federal and state income tax returns for tax years subsequent to 2003 remain open to examination. In the Company’s foreign jurisdictions — Canada, Germany, Ireland and the United Kingdom — the tax years subsequent to 2015 remain open to examination. The Company regularly assesses the likelihood of adverse outcomes resulting from examinations to determine the adequacy of its provision for income taxes and monitors the progress of ongoing discussions with tax authorities and the impact, if any, of the expected expiration of the statute of limitations in various taxing jurisdictions. The Company believes that an adequate provision has been made for any adjustments that may result from tax examinations. However, the outcome of tax audits cannot be predicted with certainty. If any issues addressed in the Company’s tax audits are resolved in a manner not consistent with management’s expectations, the Company could be required to adjust its provision for income taxes in the period such resolution occurs. As of June 30, 2021, although the timing of the resolution or closure of audits is not certain, the Company believes it is reasonably possible that its unrecognized tax benefits could be reduced by $6.3 million over the next 12 months.

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16. NET INCOME (LOSS) PER SHARE

Basic net income (loss) per share is computed using the weighted-average number of outstanding shares of common stock during the period. Diluted net income (loss) per share is computed using the weighted-average number of outstanding shares of common stock and, when dilutive, potential shares of common stock outstanding during the period. Potential common shares consist of the incremental shares of common stock issuable upon the exercise of stock options, shares issuable upon the vesting of RSUs (including PRSUs) and, to a lesser extent, purchase rights related to the ESPP.

The following table presents the calculation of basic and diluted net income (loss) per share for the periods presented (in thousands, except per share data):

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Basic net income (loss) per share:
Net income (loss)	$	4,212	$	(23,990)	$	(1,584)	$	(39,493)
Shares used in computation:
Weighted-average common shares outstanding	74,807		72,413		75,025		71,980
Basic net income (loss) per share attributable to common stockholders	$	0.06	$	(0.33)	$	(0.02)	$	(0.55)

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Diluted net income (loss) per share:
Net income (loss)	$	4,212	$	(23,990)	$	(1,584)	$	(39,493)
Shares used in computation:
Weighted-average common shares outstanding	74,807		72,413		75,025		71,980
Stock options	877		—		—		—
RSUs	3,291		—		—		—
ESPP	8		—		—		—
Number of shares used in diluted calculation	78,983		72,413		75,025		71,980
Diluted net income (loss) per share attributable to common stockholders	$	0.05	$	(0.33)	$	(0.02)	$	(0.55)

The following stock-based instruments were excluded from the calculation of diluted net income (loss) per share because their effect would have been anti-dilutive for the periods presented (in thousands):

	Three Months Ended June 30,		Six Months Ended June 30,
	2021	2020	2021	2020
Stock options	1,497	5,947	4,109	5,947
RSUs	145	7,876	10,998	7,876
ESPP	—	48	41	48

17. INFORMATION ABOUT REVENUE AND GEOGRAPHIC AREAS

The Company considers operating segments to be components of the Company for which separate financial information is available and evaluated regularly by the Company’s chief operating decision maker in deciding how to allocate resources and in assessing performance. The chief operating decision maker for the Company is the chief executive officer. The chief executive officer reviews financial information presented on a consolidated basis, accompanied by information about revenue by product line and geographic region for purposes of allocating resources and evaluating financial performance.

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The Company has determined that it has a single operating and reporting segment. When the Company communicates results externally, it disaggregates net revenue into major product lines and primary geographical markets, which is based on the billing address of the customer. The disaggregation of net revenue by major product lines is based on the type of service provided and also aligns with the timing of revenue recognition for each. To reflect the Company's strategic focus on creating differentiated experiences for its Services categories and Restaurants, Retail & Other categories, the Company further disaggregates advertising revenue to reflect these two high-level category groupings. The Services categories consist of the following businesses: home, local, auto, professional, pets, events, real estate and financial services. The Restaurants, Retail & Other categories consist of the following businesses: restaurants, shopping, beauty & fitness, health and other.

Net Revenue

The following table presents the Company’s net revenue by major product line (and by category for advertising revenue) for the periods presented (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Net revenue by product:
Advertising revenue by category:
Services	$	152,522	$	109,583	$	293,209	$	242,665
Restaurants, Retail & Other	92,439		52,650		173,739		159,661
Advertising	244,961		162,233		466,948		402,326
Transactions	3,525		3,968		7,329		6,607
Other	8,702		2,829		15,007		9,998
Total net revenue	$	257,188	$	169,030	$	489,284	$	418,931

During the three and six months ended June 30, 2021 and 2020, no individual customer accounted for 10% or more of consolidated net revenue.

As a result of the COVID-19 pandemic, the Company considered whether there was any impact to the manner in which revenue is recognized, in particular with respect to the collectability criteria for recognizing revenue from contracts with customers. The Company did not change the manner in which it recognizes revenue as a result of that assessment.

The Company offered a number of relief incentives to advertising and other revenue customers most impacted by the COVID-19 pandemic totaling $0.7 million and $13.3 million during the three months ended June 30, 2021 and 2020, respectively, and $2.9 million and $17.9 million during the six months ended June 30, 2021 and 2020, respectively. These incentives were primarily in the form of waived advertising fees and waived subscription fees. The Company accounted for these incentives as price concessions and reduced net revenue recognized in the three and six months ended June 30, 2021 and 2020 accordingly. During the three months ended June 30, 2020, the Company also paused certain advertising campaigns that were scheduled to run from April to May 2020 and offered certain free advertising products during those months with a total value of $14.5 million. All paused advertising campaigns that were not cancelled by customers resumed by the end of May 2020.

The following table presents the Company’s net revenue by major geographic region for the periods presented (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
United States	$	254,954	$	167,270	$	484,949	$	413,797
All other countries	2,234		1,760		4,335		5,134
Total net revenue	$	257,188	$	169,030	$	489,284	$	418,931

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Long-Lived Assets

The following table presents the Company’s long-lived assets by major geographic region for the periods presented (in thousands):

	June 30, 2021		December 31, 2020
United States	$	88,688	$	97,548
All other countries	3,939		4,170
Total long-lived assets	$	92,627	$	101,718

18. RESTRUCTURING

In April 2020, the Company announced a restructuring plan to help manage the near-term financial impacts of the COVID-19 pandemic (the "Restructuring Plan"). In addition to reductions and deferrals in spending, the Restructuring Plan’s cost-cutting measures included workforce reductions affecting approximately 1,000 employees and furloughs affecting approximately 1,100 additional employees, as well as salary reductions and reduced-hour work weeks. In July 2020, the Company announced an additional workforce reduction (separate from the Restructuring Plan) affecting approximately 60 employees.

During the three months ended September 30, 2020, the Company restored reduced salaries and returned many of its furloughed employees.

The Company incurred an immaterial amount of restructuring costs during the three and six months ended June 30, 2021 and does not expect to incur any material additional restructuring costs. The Company incurred $3.3 million in restructuring costs during the three and six months ended June 30, 2020 in connection with terminations under the Restructuring Plan, which represent expenditures for severance, payroll taxes and related benefits costs. These costs were recorded as restructuring expenses on the Company's condensed consolidated statements of operations.

19. SUBSEQUENT EVENTS

On August 3, 2021, the Company's board of directors authorized a $250.0 million increase to its stock repurchase program, bringing the total amount of repurchases authorized under our stock repurchase program since its inception in 2017 to $1.2 billion. The Company repurchased $35.8 million of shares subsequent to June 30, 2021, resulting in approximately $344.6 million remaining available for future repurchases following the increase on August 3, 2021.

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ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion and analysis of our financial condition and results of operations should be read in conjunction with our condensed consolidated financial statements and related notes appearing elsewhere in this Quarterly Report. This discussion contains forward-looking statements that reflect our plans, estimates and beliefs, and involve risks and uncertainties. Our actual results and the timing of certain events could differ materially from those anticipated in these forward-looking statements as a result of several factors, including those discussed in the section titled “Risk Factors” included under Part I, Item 1A in our Annual Report. See “Special Note Regarding Forward-Looking Statements” in this Quarterly Report.

Overview

As one of the best known internet brands in the United States, Yelp is a trusted local resource for consumers and a partner in success for businesses of all sizes. Consumers trust us for our more than 200 million ratings and reviews of businesses across a broad range of categories, while businesses advertise with us to reach our large audience of purchase-oriented and generally affluent consumers. We believe our ability to provide value to both consumers and businesses not only fulfills our mission to connect consumers with great local businesses, but also positions us well in the local, digital advertising market in the United States.

We generate substantially all of our revenue from the sale of performance-based advertising products, which our advertising platform matches to individual consumers through auctions priced on a cost-per-click ("CPC") basis. In the three months ended June 30, 2021, our net revenue was $257.2 million, up 52% from the three months ended June 30, 2020, and we recorded net income of $4.2 million and adjusted EBITDA of $63.8 million. In the six months ended June 30, 2021, our net revenue was $489.3 million, which represented an increase of 17% from the six months ended June 30, 2020, and we recorded a net loss of $1.6 million and adjusted EBITDA of $107.5 million. For information on how we define and calculate adjusted EBITDA, and a reconciliation of this non-GAAP financial measure to net income (loss), see "Non-GAAP Financial Measures" below.

As a result of our investments in product, marketing and our Multi-location sales team, we made further progress on our revenue growth initiatives in the second quarter of 2021:

•Improve monetization of our Services categories. Our investments in the product experience for businesses and consumers in our Services categories drove both sequential and year-over-year increases in the percentage of monetized leads in our Services categories in the second quarter. These efforts contributed to increases in advertising revenue from Services businesses in the second quarter of 39% year over year and of more than 8% compared to the first quarter of 2021.

•Expand our Self-serve and Multi-location sales channels. Our continued investments in expanding our Multi-location product portfolio and attribution capabilities during the COVID-19 pandemic positioned us well to benefit from the return of Multi-location advertisers — particularly Restaurants, Retail & Other businesses — as local economies reopened in the second quarter. In the second quarter, advertising revenue from Multi-location customers increased by nearly 90% compared to the second quarter of 2020 and by more than 20% from the first quarter of 2021. Our product and marketing investments continued to drive strong performance in our Self-serve channel in the second quarter, with revenue attributable to that channel up nearly 100% year over year and nearly 70% compared to the second quarter of 2019.

•Deliver more value to advertisers. Increasing our value proposition to advertisers by delivering more ad clicks at a lower average price is an important part of our strategy to drive long-term growth and has been a focus of our product investment in recent years. In the second quarter, improvements to our ad system and matching technology, together with further recovery in our consumer traffic, drove more ad clicks to advertisers at a lower average CPC than in both the second quarter of 2020 and the first quarter of 2021. Ad clicks returned to a year-over-year increase in the second quarter, up 87% from the second quarter of 2020, and average CPC declined 20% over the same period.

In connection with plans to maintain a primarily remote workforce, we entered into sublease agreements for portions of our leased office space in San Francisco and New York. While these subleases resulted in non-cash impairment charges totaling $11.2 million in the second quarter related to right-of-use assets and leasehold improvements associated with the underlying operating leases, we expect the subleases, together with our decision not to renew the lease for a portion of our Phoenix office space, to collectively result in annual expense savings of approximately $10.0 million to $12.0 million.

Our continued expense management, our more efficient go-to-market approach and recovery in local economies drove a 52% increase in net revenue, a return to positive net income of $4 million and a 473% increase in adjusted EBITDA in the second quarter of 2021 compared to the year-ago quarter. These factors also contributed to certain of our financial results

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surpassing pre-COVID-19 pandemic levels in the second quarter: net revenue increased 4% from the second quarter of 2019. While net income margin decreased slightly compared to the second quarter of 2019, from 5% to 2% due to the impairment charges in the second quarter of 2021, adjusted EBITDA margin improved by three percentage points over the same period. We plan to both continue exploring opportunities to reduce expenses associated with our leased office space and further invest in our growth initiatives in the third quarter.

Key Metrics

We regularly review a number of metrics, including the key metrics set forth below, to evaluate our business, measure our performance, identify trends in our business, prepare financial projections and make strategic decisions.

Ad Clicks

Ad clicks represent user interactions with our pay-for-performance advertising products, including clicks on advertisements on our website and mobile app, clicks on syndicated advertisements on third-party platforms and Request-A-Quote submissions. Ad clicks include only user interactions that we are able to track directly, and therefore do not include user interactions with ads sold through our advertising partnerships. We do not expect the exclusion of such user interactions to materially affect this metric.

Because we generate revenue primarily from the sale of performance-based ads, our ability to increase our revenue depends largely on our ability to increase ad clicks. We report the year-over-year percentage change in ad clicks on a quarterly basis as a measure of our success in monetizing more of our consumer traffic and delivering more value to advertisers.

The following table presents year-over-year changes in our ad clicks for the periods indicated (expressed as a percentage):

	Three Months Ended June 30,
	2021	2020
Ad Clicks	87%	(51)%

Average CPC

We define average CPC as revenue from our performance-based ad products — excluding certain revenue adjustments that do not impact the outcome of an auction for an individual ad click, such as refunds, as well as revenue from our advertising partnerships — divided by the total number of ad clicks for a given three-month period.

Average CPC, when viewed together with ad clicks, provides important insight into the value we deliver to advertisers, which we believe is a significant factor in our ability to retain both revenue and customers. For example, a negative change in average CPC for a given three-month period combined with a positive change in ad clicks over the same period would indicate that we delivered more ad clicks at lower prices, thereby delivering more value to our advertisers; we would expect this to have a positive impact on retention. We believe that average CPC and ad clicks together reflect one of the largest dynamics affecting our advertising revenue performance.

The following table presents year-over-year changes in our average CPC for the periods indicated (expressed as a percentage):

	Three Months Ended June 30,
	2021	2020
Average CPC	(20)%	35%

Advertising Revenue by Category

Our advertising revenue comprises revenue from the sale of our advertising products, including the resale of our advertising products by partners and syndicated ads appearing on third-party platforms.

To reflect our strategic focus on creating two differentiated experiences on Yelp, we provide a quarterly breakdown of our advertising revenue attributable to businesses in two high-level category groupings: Services and Restaurants, Retail & Other. Our Services categories consist of home, local, auto, professional, pets, events, real estate and financial services. Our Restaurants, Retail & Other categories consist of restaurants, shopping, beauty & fitness, health and other.

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The following table presents our advertising revenue by category for the periods indicated (in thousands, except percentages):

	Three Months Ended June 30,				% Change	Six Months Ended June 30,				% Change
	2021		2020			2021		2020
Services	$	152,522	$	109,583	39%	$	293,209	$	242,665	21%
Restaurants, Retail & Other	92,439		52,650		76%	173,739		159,661		9%
Total Advertising Revenue	$	244,961	$	162,233	51%	$	466,948	$	402,326	16%

Paying Advertising Locations By Category

Paying advertising locations comprise all business locations associated with a business account from which we recognized advertising revenue in a given month, excluding business accounts that purchased advertising through partner programs other than Yelp Ads Certified Partners, averaged over a given three-month period.

The following table presents the number of paying advertising locations by category during the periods presented (in thousands, except percentages):

	Three Months Ended June 30,		% Change
	2021	2020
Services	234	204	15%
Restaurants, Retail & Other	294	174	69%
Total Paying Advertising Locations	528	378	40%

Critical Accounting Policies and Estimates

Our condensed consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States ("GAAP"). The preparation of these consolidated financial statements requires us to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenue, expenses and related disclosures. We evaluate our estimates and assumptions on an ongoing basis. Our estimates and assumptions are based on historical experience and various other assumptions that we believe to be reasonable under the circumstances. Our actual results could differ from those estimates. Due to the COVID-19 pandemic and the uncertainty regarding the extent and duration of its impacts, certain estimates and assumptions have required and may continue to require increased judgment and carry a higher degree of variability and volatility. As events continue to evolve and additional information becomes available, these estimates may materially change in future periods.

We believe that the assumptions and estimates associated with revenue recognition, website and internal-use software development costs, the incremental borrowing rate used with respect to leases, business combinations, allowance for doubtful accounts, income taxes and stock-based compensation expense have the greatest potential impact on our consolidated financial statements. There have been no material changes to our critical accounting policies and estimates from those disclosed in our Annual Report.

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Results of Operations

The following table sets forth our results of operations for the periods indicated (in thousands, except percentages). The period-to-period comparison of financial results is not necessarily indicative of the results of operations to be anticipated for the full year 2021 or any future period.

	Three Months Ended June 30,								Six Months Ended June 30,
	2021		2020		$ Change		% Change(1)		2021		2020		$ Change		% Change(1)
Consolidated Statements of Operations Data:
Net revenue by product:
Advertising revenue by category:
Services	$	152,522	$	109,583	$	42,939	39	%	$	293,209	$	242,665	$	50,544	21	%
Restaurants, Retail & Other	92,439		52,650		39,789		76	%	173,739		159,661		14,078		9	%
Advertising	244,961		162,233		82,728		51	%	466,948		402,326		64,622		16	%
Transactions	3,525		3,968		(443)		(11)	%	7,329		6,607		722		11	%
Other	8,702		2,829		5,873		208	%	15,007		9,998		5,009		50	%
Total net revenue	257,188		169,030		88,158		52	%	489,284		418,931		70,353		17	%
Costs and expenses:
Cost of revenue (exclusive of depreciation and amortization shown separately below)	17,993		11,825		6,168		52	%	32,867		28,672		4,195		15	%
Sales and marketing	113,641		96,289		17,352		18	%	226,550		233,586		(7,036)		(3)	%
Product development	68,695		53,969		14,726		27	%	136,687		121,082		15,605		13	%
General and administrative	45,095		26,402		18,693		71	%	76,956		69,938		7,018		10	%
Depreciation and amortization	12,833		12,582		251		2	%	25,916		24,940		976		4	%
Restructuring	12		3,312		(3,300)		(100)	%	32		3,312		(3,280)		(99)	%
Total costs and expenses	258,269		204,379		53,890		26	%	499,008		481,530		17,478		4	%
Loss from operations	(1,081)		(35,349)		34,268		(97)	%	(9,724)		(62,599)		52,875		(84)	%
Other income, net	542		495		47		9	%	1,247		2,878		(1,631)		(57)	%
Loss before income taxes	(539)		(34,854)		34,315		(98)	%	(8,477)		(59,721)		51,244		(86)	%
Benefit from income taxes	(4,751)		(10,864)		6,113		(56)	%	(6,893)		(20,228)		13,335		(66)	%
Net income (loss)	$	4,212	$	(23,990)	$	28,202	(118)	%	$	(1,584)	$	(39,493)	$	37,909	(96)	%

(1) Percentage changes are calculated based on rounded numbers and may not recalculate exactly due to rounding.

Three and Six Months Ended June 30, 2021 and 2020

Net Revenue

Advertising. We generate advertising revenue from the sale of our advertising products — including enhanced listing pages and performance and impression-based advertising in search results and elsewhere on our platform — to businesses of all sizes, from single-location local businesses to multi-location national businesses. Advertising revenue also includes revenue generated from the resale of our advertising products by certain partners and monetization of remnant advertising inventory through third-party ad networks. We present advertising revenue on a disaggregated basis for our high-level category groupings, Services and Restaurants, Retail & Other.

Advertising revenue for the three and six months ended June 30, 2021 increased compared to the prior-year periods. Revenue from businesses in our Services categories, particularly Home Services businesses, increased due to an improved retention rate of non-term advertisers' budgets, an increase in paying advertising locations and higher customer spend. Revenue from businesses in our Restaurants, Retail & Other categories increased due to growth in the number of paying advertising locations, reflecting our reduction of relief incentives as COVID-19 pandemic-related operating restrictions eased in the second quarter and businesses in these categories were able to operate at greater capacity.

Transactions. We generate revenue from various transactions with consumers, primarily through our partnership integrations, which are mainly revenue-sharing arrangements that provide consumers with the ability to complete food ordering and delivery transactions through third parties directly on Yelp. We earn a fee for acting as an agent for transactions placed through these integrations, which we record on a net basis and include in revenue upon completion of a transaction.

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Transactions revenue for the three months ended June 30, 2021 decreased compared to the prior-year period due to a lower volume of food takeout and delivery orders as many restaurants resumed or increased the capacity of their dine-in operations during the quarter. Transactions revenue for the six months ended June 30, 2021 increased compared to the prior-year period due to an overall increase in the volume of food takeout and delivery orders due to the COVID-19 pandemic, which limited dine-in operations of many restaurants.

Other. We generate revenue through our subscription services, including our Yelp Reservations and Yelp Waitlist products. We also generate revenue through our Yelp Knowledge and Yelp Fusion programs, which provide access to Yelp data for a fee, as well as other non-advertising partnerships.

Other revenue for the three and six months ended June 30, 2021 increased compared to the prior-year periods primarily due to a reduction in the relief incentives that we provided to our customers impacted by the COVID-19 pandemic during the three and six months ended June 30, 2020, mainly in the form of waived subscription fees. Other revenue also reflected increased revenue from our Yelp Fusion program, which we introduced in May 2020.

Trends and Uncertainties of Net Revenue. Net revenue increased in the three months ended June 30, 2021 from the three months ended March 31, 2021 due to increased advertiser demand, as well as from the three months ended June 30, 2020, reflecting recovery from the impact of the COVID-19 pandemic and progress on our strategic initiatives. Net revenue also increased compared to the three months ended June 30, 2019, particularly revenue from Services categories, which increased by 23%. While the pace of recovery in our Restaurants, Retail & Other categories remains subject to the evolution of the COVID-19 pandemic and related public health restrictions, we expect our initiatives will continue to drive momentum in the third quarter. As such, we anticipate net revenue in the three months ending September 30, 2021 will remain relatively consistent with or slightly increase from the second quarter of 2021.

Costs and Expenses

Cost of Revenue (exclusive of depreciation and amortization). Our cost of revenue consists primarily of credit card processing fees and website infrastructure expense, which includes website hosting costs and employee costs (including stock-based compensation expense) for the infrastructure teams responsible for operating our website and mobile app, and excludes depreciation and amortization expense. Cost of revenue also includes third-party advertising fulfillment costs.

Cost of revenue for the three and six months ended June 30, 2021 increased compared to the prior-year periods, primarily due to:

•increases in website infrastructure expense of $2.6 million and $1.4 million, respectively, as a result of higher traffic;

•increases in advertising fulfillment costs of $2.3 million and $2.4 million, respectively, driven by expanded efforts to syndicate advertising budgets on third-party sites; and

•increases in merchant credit card fees of $1.3 million and $0.7 million, respectively, due to a higher volume of transactions associated with the increase in advertising revenue.

Sales and Marketing. Our sales and marketing expenses primarily consist of employee costs (including sales commission and stock-based compensation expenses) for our sales and marketing employees. Sales and marketing expenses also include business and consumer acquisition marketing, community management, as well as allocated workplace and other supporting overhead costs.

Sales and marketing expenses for the three months ended June 30, 2021 increased compared to the prior-year periods due to:

•an increase in marketing and advertising costs of $13.4 million, reflecting our investment in targeted business owner acquisition and regional consumer campaigns; and

•an increase of $5.3 million in employee costs due to higher sales headcount as compared with the prior-year period. The increase in sales headcount was due to the impact of the restructuring plan we announced on April 9, 2020 ("Restructuring Plan") on sales headcount in the prior-year period, as well as increased hiring efforts in the second half of 2020.

These increases were partially offset by a decrease in allocated workplace operating costs of $1.3 million due to reductions in our amount of leased office space, which began in the first quarter of 2021.

Sales and marketing expenses for the six months ended June 30, 2021 decreased compared to the prior-year period due to:

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•a decrease of $20.4 million in employee costs, which was primarily due to lower sales headcount following the terminations associated with the Restructuring Plan; and

•a decrease in allocated workplace operating costs of $4.9 million as a result of our office closures, which began at the end of the first quarter 2020, and the reduction of our office space in 2021.

These decreases were largely offset by an increase in marketing and advertising costs of $18.3 million.

Product Development. Our product development expenses primarily consist of employee costs (including stock-based compensation expense, net of capitalized employee costs associated with capitalized website and internal-use software development) for our engineers, product management and corporate infrastructure employees. In addition, product development expenses include allocated workplace and other supporting overhead costs.

Product development expenses for the three and six months ended June 30, 2021 increased compared to the prior-year periods due to increases in employee costs of $13.0 million and $14.2 million, respectively, primarily reflecting lower costs in the prior-year periods due to the reduced-hour work weeks implemented in the second quarter of 2020 under the Restructuring Plan, which ended during the third quarter of 2020. The increase in employee costs also reflected higher stock-based compensation expenses in 2021.

General and Administrative. Our general and administrative expenses primarily consist of employee costs (including stock-based compensation expense) for our executive, finance, user operations, legal, people operations and other administrative employees. Our general and administrative expenses also include our provision for doubtful accounts, consulting costs, as well as workplace and other supporting overhead costs.

General and administrative expenses for the three and six months ended June 30, 2021 increased compared to the prior-year periods due to:

•an impairment charge of $11.2 million related to the right-of-use assets and leasehold improvements for office space that was subleased during the three months ended June 30, 2021 (see Note 8, "Leases," of the Notes to Condensed Consolidated Financial Statements included under Part I, Item 1 in this Quarterly Report for further detail); and

•increases in employee costs of $9.5 million and $10.8 million, respectively, which were primarily the result of our determination that the performance conditions for performance-based restricted stock units had either been met or were expected to be met.

These increases were partially offset by decreases in our provision for doubtful accounts of $2.0 million and $14.7 million, respectively, due to our release of a portion of our COVID-19-related bad debt reserves following a decline in the rate of customer delinquencies.

Depreciation and Amortization. Depreciation and amortization expense primarily consists of depreciation on computer equipment, software, leasehold improvements, capitalized website and software development costs, and amortization of purchased intangible assets.

Depreciation and amortization expense for the three and six months ended June 30, 2021 slightly increased, primarily due to increases in depreciation associated with capitalized website and internal use software development costs as we invested in new and enhanced products for business owners and consumers.

Restructuring. In April 2020, we announced the Restructuring Plan to help manage the near-term financial impacts of the COVID-19 pandemic. We incurred $3.3 million in restructuring costs during the three and six months ended June 30, 2020, which consisted of severance, payroll taxes and related benefits costs for terminated employees. See Note 18, "Restructuring," of the Notes to Condensed Consolidated Financial Statements included under Part I, Item 1 in this Quarterly Report for further detail.

Trends and Uncertainties of Costs and Expenses. A majority of our expenses increased during the three months ended June 30, 2021 compared to the three months ended March 31, 2021, primarily reflecting the impairment charge we recorded in the second quarter, as well as higher cost of revenue. We expect costs and expenses to further increase in the three months ending September 30, 2021 as we seek further opportunities to sublease portions of our leased office space, which may result in additional impairment charges, and continue to make strategic investments in our product development, marketing and sales teams to support the growth of our business.

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Other Income, Net

Other income, net consists primarily of the interest income earned on our cash, cash equivalents and previously held marketable securities, the portion of our sublease income in excess of our lease cost, amortization of debt issuance costs, credit facility fees and foreign exchange gains and losses.

Other income, net for the six months ended June 30, 2021 decreased compared to the prior-year period, primarily driven by lower interest income as a result of the change in our investment strategy in the first quarter of 2020 to reduce our holdings of marketable securities in favor of holdings that are more liquid, mainly money market funds, which offer lower interest rates. For more information on this change, see Note 4, "Marketable Securities," of the Notes to Condensed Consolidated Financial Statements.

Benefit from Income Taxes

Benefit from income taxes consists of: federal and state income taxes in the United States and income taxes in certain foreign jurisdictions; deferred income taxes reflecting the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes; and the realization of net operating loss carryforwards.

The decreases in benefit from income taxes during the three and six months ended June 30, 2021 compared to the prior-year periods were primarily due to a decrease in quarter-to-date and year-to-date pre-tax losses in 2021 as well as net operating loss benefits in the prior-year periods under the Coronavirus Aid, Relief and Economic Security Act (the “CARES Act”) that did not recur in 2021. The CARES Act, which was enacted on March 27, 2020 in response to the COVID-19 pandemic, allowed for net operating losses incurred in 2018, 2019 and 2020 to be carried back to tax years with a 35.0% tax rate. See Note 15, "Income Taxes," of the Notes to Condensed Consolidated Financial Statements included under Part I, Item 1 in this Quarterly Report for further detail.

As of December 31, 2020, we had approximately $31.2 million in net deferred tax assets ("DTAs"). As of June 30, 2021, we consider it more likely than not that we will have sufficient taxable income in the future that will allow us to realize these DTAs. However, it is possible that some or all of these DTAs will not be realized. Therefore, unless we are able to generate sufficient taxable income from our operations, a substantial valuation allowance may be required to reduce our DTAs, which would materially increase our expenses in the period in which we recognize the allowance and have a materially adverse impact on our consolidated financial statements. The exact timing and amount of the valuation allowance recognition are subject to change on the basis of the net income that we are able to actually achieve. We will continue to evaluate the possible recognition of a valuation allowance on a quarterly basis.

Beginning in 2022, we expect additional changes under the U.S. Tax Cuts and Jobs Act (the "Tax Act") to come into effect that could adversely impact our effective tax rate and cash flows in future years. The Tax Act, which was enacted on December 22, 2017, made broad and complex changes to the U.S. tax code, including, among other things, reducing the federal corporate tax rate. We will continue to evaluate the impacts and monitor the issuance of additional regulatory or accounting guidance in addition to any executive or legislative updates.

Non-GAAP Financial Measures

Our condensed consolidated financial statements are prepared in accordance with GAAP. However, we have also disclosed below adjusted EBITDA and adjusted EBITDA margin, each of which is a non-GAAP financial measure.

Adjusted EBITDA has limitations as an analytical tool, and you should not consider it in isolation or as a substitute for analysis of our results as reported under GAAP. In particular, adjusted EBITDA should not be viewed as a substitute for, or superior to, net income (loss) prepared in accordance with GAAP as a measure of profitability or liquidity. Some of these limitations are:

•although depreciation and amortization are non-cash charges, the assets being depreciated and amortized may have to be replaced in the future, and adjusted EBITDA does not reflect all cash capital expenditure requirements for such replacements or for new capital expenditure requirements;

•adjusted EBITDA does not reflect changes in, or cash requirements for, our working capital needs;

•adjusted EBITDA does not reflect the impact of the recording or release of valuation allowances or tax payments that may represent a reduction in cash available to us;

•adjusted EBITDA does not consider the potentially dilutive impact of equity-based compensation;

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•adjusted EBITDA does not take into account any income or costs that management determines are not indicative of ongoing operating performance, such as restructuring costs and impairment charges; and

•other companies, including those in our industry, may calculate adjusted EBITDA differently, which reduces its usefulness as a comparative measure.

Because of these limitations, you should consider adjusted EBITDA and adjusted EBITDA margin alongside other financial performance measures, net income (loss) and our other GAAP results.

Adjusted EBITDA. Adjusted EBITDA is a non-GAAP financial measure that we calculate as net income (loss), adjusted to exclude: provision for (benefit from) income taxes; other income, net; depreciation and amortization; stock-based compensation expense; and, in certain periods, certain other income and expense items, such as restructuring costs and impairment charges.

Adjusted EBITDA margin. Adjusted EBITDA margin is a non-GAAP financial measure that we calculate as Adjusted EBITDA divided by net revenue.

The following is a reconciliation of net income (loss) to adjusted EBITDA, as well as the calculation of net income (loss) margin and adjusted EBITDA margin, for each of the periods indicated (in thousands, except percentages):

	Three Months Ended June 30,									Six Months Ended June 30,
	2021			2020			2019			2021			2020
Reconciliation of Net Income (Loss) to Adjusted EBITDA:
Net income (loss)	$	4,212		$	(23,990)		$	12,303		$	(1,584)		$	(39,493)
(Benefit from) provision for income taxes	(4,751)			(10,864)			3,785			(6,893)			(20,228)
Other income, net	(542)			(495)			(3,891)			(1,247)			(2,878)
Depreciation and amortization	12,833			12,582			12,240			25,916			24,940
Stock-based compensation	40,859			30,585			30,452			80,104			62,335
Restructuring	12			3,312			—			32			3,312
Asset impairment(1)	11,164			—			—			11,164			—
Adjusted EBITDA	$	63,787		$	11,130		$	54,889		$	107,492		$	27,988
Net revenue	$	257,188		$	169,030		$	246,955		$	489,284		$	418,931
Net income (loss) margin	2		%	(14)		%	5		%	—		%	(9)		%
Adjusted EBITDA margin	25		%	7		%	22		%	22		%	7		%

(1) Recorded within general and administrative expenses on our Condensed Consolidated Statements of Operations.

Liquidity and Capital Resources

As of June 30, 2021, we had cash and cash equivalents of $558.2 million, which consisted of cash and money market funds. Our cash held internationally as of June 30, 2021 was $11.2 million.

To date, we have been able to finance our operations and our acquisitions through proceeds from private and public financings, including our initial public offering in March 2012 and our follow-on offering in October 2013, cash generated from operations, and, to a lesser extent, cash provided by the exercise of employee stock options and purchases under the Employee Stock Purchase Plan, as well as proceeds from our sale of Eat24 to Grubhub in October 2017.

We continue to hold the majority of our investments in highly liquid money market funds following the liquidation of our portfolio of marketable securities in the first half of 2020, which we undertook as a result of our change in investment strategy to preserve liquidity in response to the COVID-19 pandemic. Our remaining investments that were not held in money market funds as of June 30, 2021 were held in certificates of deposit. See Note 4, "Marketable Securities," of the Notes to Condensed Consolidated Financial Statements included under Part I, Item 1 in this Quarterly Report for further details about the liquidation of our portfolio of marketable securities.

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We have the ability to access backup liquidity to fund working capital and for other capital requirements, as needed, through a three-year, $75.0 million senior unsecured revolving credit facility (including a $25.0 million letter of credit sub-limit) as part of our Credit Agreement with Wells Fargo Bank, National Association which we entered into in May 2020 (the "Credit Agreement"). As of June 30, 2021, we had $21.5 million of letters of credit under the sub-limit related to lease agreements for certain office locations, which are required to be maintained and issued to the landlords of each facility, and $53.5 million remained available under the revolving credit facility as of that date. The cost of capital associated with this credit facility was not significantly more than the cost of capital that we would have expected prior to the onset of the COVID-19 pandemic. As of June 30, 2021, we were in compliance with all covenants and there were no loans outstanding under the Credit Agreement. For more information about the terms of the Credit Agreement, including financial covenants, events of default and other limitations, see "Management's Discussion and Analysis of Financial Condition and Results of Operations—Liquidity and Capital Resources" included under Part II, Item 7 in our Annual Report.

Our future capital requirements and the adequacy of available funds will depend on many factors, including those set forth under "Risk Factors" included under Part I, Item 1A in our Annual Report. We believe that, as a result of the steps we have taken in response to the COVID-19 pandemic, our existing cash and cash equivalents, together with any cash generated from operations, will be sufficient to meet our material cash commitments, including: working capital requirements; our anticipated repurchases of common stock pursuant to our stock repurchase program; payment of taxes related to the net share settlement of equity awards; payment of lease costs related to our operating leases; and purchases of property, equipment and software and website hosting services for at least the next 12 months. However, this estimate is based on a number of assumptions that may prove to be materially different and we could exhaust our available cash and cash equivalents earlier than presently anticipated. We may be required to draw down funds from our revolving credit facility or seek additional funds through equity or debt financings in the next 12 months to respond to business challenges associated with the COVID-19 pandemic or other challenges, including the need to develop new features and products or enhance existing services, improve our operating infrastructure or acquire complementary businesses and technologies. The cost of capital associated with any additional funds sought in the future might be adversely impacted by the extent and duration of the impact of the COVID-19 pandemic on our business.

Amounts deposited with third-party financial institutions exceed the Federal Deposit Insurance Corporation and Securities Investor Protection Corporation insurance limits, as applicable. These cash and cash equivalents could be impacted if the underlying financial institutions fail or are subjected to other adverse conditions in the financial markets. To date, we have experienced no loss or lack of access to our cash and cash equivalents; however, we can provide no assurances that access to our invested cash and cash equivalents will not be impacted by adverse conditions in the financial markets.

Cash Flows

The following table summarizes our cash flows for the periods indicated (in thousands):

	Six Months Ended June 30,
	2021		2020
Condensed Consolidated Statements of Cash Flows Data:
Net cash provided by operating activities	$	109,107	$	57,249
Net cash (used in) provided by investing activities	$	(13,196)	$	279,481
Net cash used in financing activities	$	(133,394)	$	(2,105)

Operating Activities. Net cash provided by operating activities during the six months ended June 30, 2021 increased compared to the prior-year period primarily as a result of an increase in cash inflows from customers due to higher revenue and a decrease in cash outflows due to the timing of payments to our vendors and employees.

Investing Activities. Net cash used in investing activities during the six months ended June 30, 2021 primarily reflects purchases of property, equipment and software. Net cash provided by investing activities during the prior-year period primarily reflects the sale of our marketable securities portfolio following the change in our investment strategy to preserve liquidity.

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Financing Activities. Net cash used in financing activities during the six months ended June 30, 2021 increased compared to the prior-year period primarily due to repurchases of common stock pursuant to our stock repurchase program and, to a lesser extent, an increase in the amount of taxes paid in connection with the settlement of employee tax liabilities upon the vesting of restricted stock units ("RSUs"). The increase in taxes paid primarily resulted from our use of the net share withholding method of settling employee tax liabilities for RSUs in the current year, compared to the sell-to-cover method, which we used during a portion of the year-ago period. Increases in both the number of shares released upon the vesting of RSUs and the average stock price upon release in 2021 also contributed to this increase in taxes paid.

Stock Repurchase Program

As of June 30, 2021, our board of directors had authorized us to repurchase up to an aggregate of $950.0 million of our outstanding common stock since it initially authorized our stock repurchase program in July 2017. During the six months ended June 30, 2021, we repurchased on the open market 3,019,987 shares for an aggregate purchase price of $114.2 million. We did not repurchase any shares during the six months ended June 30, 2020.

On August 3, 2021, our board of directors authorized a $250.0 million increase to our stock repurchase program, bringing the total amount of repurchases authorized under our stock repurchase program since its inception to $1.2 billion. We repurchased $35.8 million of shares subsequent to June 30, 2021, resulting in approximately $344.6 million remaining available for future repurchases following the increase on August 3, 2021.

We may repurchase shares at our discretion in the open market, privately negotiated transactions, in transactions structured through investment banking institutions, or a combination of the foregoing. The program is not subject to any time limit and may be modified, suspended or discontinued at any time. The amount and timing of repurchases are subject to a variety of factors, including liquidity, cash flow and market conditions.

We have funded all repurchases to date and expect to fund any future repurchases with cash available on our balance sheet.

Off-Balance Sheet Arrangements

We do not have any off-balance sheet arrangements as defined in Item 303(a)(4)(ii) of Regulation S-K promulgated by the U.S. Securities and Exchange Commission ("SEC") under the Securities Act.

Contractual Obligations

There have been no material changes to our contractual obligations and other commitments as disclosed in our Annual Report.

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ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

We have operations both within the United States and internationally, and we are exposed to market risks in the ordinary course of business. These risks primarily include interest rate, foreign exchange risks and inflation, and have not changed materially from the market risks we were exposed to in the year ended December 31, 2020.

ITEM 4. CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

We maintain "disclosure controls and procedures," as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act, that are designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the SEC's rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is accumulated and communicated to the company’s management, including its principal executive and principal financial officers, as appropriate to allow timely decisions regarding required disclosure.

Our management, with the participation of our Chief Executive Officer and Chief Financial Officer, evaluated the effectiveness of our disclosure controls and procedures as of June 30, 2021. Based on this evaluation, our Chief Executive Officer and Chief Financial Officer concluded that, as of June 30, 2021, our disclosure controls and procedures were effective at the reasonable assurance level.

Changes in Internal Control Over Financial Reporting

There was no change in our internal control over financial reporting identified in connection with the evaluation required by Rule 13a-15(d) and 15d-15(d) of the Exchange Act that occurred during the three months ended June 30, 2021 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

Inherent Limitations on Effectiveness of Controls

Our management, including our Chief Executive Officer and our Chief Financial Officer, believes that our disclosure controls and procedures and internal control over financial reporting are designed to provide reasonable assurance of achieving their objectives and are effective at the reasonable assurance level. However, our management does not expect that our disclosure controls and procedures or our internal control over financial reporting will prevent all errors and all fraud. A control system, no matter how well conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the control system are met. Further, the design of a control system must reflect the fact that there are resource constraints, and the benefits of controls must be considered relative to their costs. Because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that all control issues and instances of fraud, if any, have been detected. These inherent limitations include the realities that judgments in decision making can be faulty, and that breakdowns can occur because of a simple error or mistake. Additionally, controls can be circumvented by the individual acts of some persons, by the collusion of two or more people or by management override of controls. The design of any system of controls is also based in part upon certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions; over time, controls may become inadequate because of changes in conditions, or the degree of compliance with policies or procedures may deteriorate. Because of the inherent limitations in a cost-effective control system, misstatements due to error or fraud may occur and not be detected.

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PART II. OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

For information regarding material legal proceedings in which we are involved, see "Legal Proceedings" in Note 12, "Commitments and Contingencies," of the Notes to Condensed Consolidated Financial Statements included in this Quarterly Report, which is incorporated herein by reference. We are also subject to legal proceedings arising in the ordinary course of business. Although the results of litigation and claims cannot be predicted with certainty, we currently do not believe that the final outcome of any of these other matters will have a material effect on our business, financial position, results of operations or cash flows.

ITEM 1A. RISK FACTORS

There have been no material changes to the risks factors set forth in the section titled "Risk Factors" included under Part I, Item 1A of our Annual Report, which describes various risks and uncertainties that could adversely affect our business, financial condition, results of operations, cash flows and the trading price of our common stock. You should carefully consider the risks and uncertainties described in the Annual Report before making an investment decision.

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

Issuer Purchases of Equity Securities

The following table summarizes our stock repurchase activity for the three months ended June 30, 2021 (in thousands except for price per share):

Period	Total Number of Shares Purchased(1)	Average Price Paid per Share(2)		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs	Approximate Dollar Value of Shares that May Yet Be Purchased Under the Plans or Program
April 1 – April 30, 2021	570	$	40.02	570	$	172,262
May 1 – May 31, 2021	215	$	38.97	215	$	163,879
June 1 – June 30, 2021	834	$	40.09	834	$	130,436

(1)    Between July 2017 and June 2021, our board of directors authorized us to repurchase up to $950.0 million of our outstanding common stock, $130.4 million of which remained available as of June 30, 2021.

On August 3, 2021, our board of directors authorized a $250.0 million increase to our stock repurchase program, bringing the total amount of repurchases authorized under our stock repurchase program since its inception to $1.2 billion. We repurchased $35.8 million of shares subsequent to June 30, 2021, resulting in approximately $344.6 million remaining available for future repurchases following the increase on August 3, 2021. The actual timing and amount of repurchases depend on a variety of factors, including liquidity, cash flow and market conditions. See "Management's Discussion and Analysis of Financial Condition and Results of Operations—Liquidity and Capital Resources—Stock Repurchase Program" included under Part I, Item 2 in this Quarterly Report.

(2)    Average price paid per share includes costs associated with the repurchases.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES

None.

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

ITEM 5. OTHER INFORMATION

Diane Irvine, chairperson of our board of directors and chairperson of the audit committee of the board of directors (the "Audit Committee"), currently serves on the audit committees of more than three public companies. Our board of directors has affirmatively determined that Ms. Irvine's simultaneous service on the audit committees of more than three public companies does not impair her ability to effectively serve on our Audit Committee, as disclosed on our Investor Relations website at www.yelp-ir.com under the section entitled "Board Composition" within the "Governance" menu.

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ITEM 6. EXHIBITS.

Exhibit		Incorporated by Reference				Filed Herewith
Number	Exhibit Description	Form	File No.	Exhibit	Filing Date
3.1	Amended and Restated Certificate of Incorporation of Yelp Inc., as Amended.	8-K	001-35444	3.1	7/8/2020
3.2	Amended and Restated Bylaws of Yelp Inc.	8-K	001-35444	3.2	7/8/2020
4.1	Reference is made to Exhibits 3.1 and 3.2.
4.2	Form of Common Stock Certificate.	8-A/A	001-35444	4.1	9/23/2016
31.1	Certification pursuant to Rule 13a-14(a)/15d-14(a).					X
31.2	Certification pursuant to Rule 13a-14(a)/15d-14(a).					X
32.1†	Certifications of Chief Executive Officer and Chief Financial Officer.					X
101.INS	Inline XBRL Instance Document (embedded within the Inline XBRL document).
101.SCH	Inline XBRL Taxonomy Extension Schema Document.					X
101.CAL	Inline XBRL Taxonomy Extension Calculation Linkbase Document.					X
101.DEF	Inline XBRL Taxonomy Extension Definition Linkbase Document.					X
101.LAB	Inline XBRL Taxonomy Extension Labels Linkbase Document.					X
101.PRE	Inline XBRL Taxonomy Extension Presentation Linkbase Document.					X
104	Cover Page Interactive Data File (embedded within the Inline XBRL document).
†	The certifications attached as Exhibit 32.1 accompany this Quarterly Report on Form 10-Q, are not deemed filed with the SEC and are not to be incorporated by reference into any filing of Yelp Inc. under the Securities Act or the Exchange Act, whether made before or after the date of this Quarterly Report, irrespective of any general incorporation language contained in such filing.

37

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.

		YELP INC.
Date:	August 6, 2021	/s/ David Schwarzbach
		David Schwarzbach
		Chief Financial Officer
		(Principal Financial and Accounting Officer and Duly Authorized Signatory)

EX-31.1

EXHIBIT31.1

CERTIFICATION

I, Jeremy Stoppelman, certify that:

1.	I have reviewed this Quarterly Report on Form 10-Q of Yelp Inc.;
2.	Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3.	Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;
4.	The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:
	a)	Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;
	b)	Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
	c)	Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
	d)	Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an Annual Report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and
5.	The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):
	a)	All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and
	b)	Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	August 6, 2021
/s/ Jeremy Stoppelman
Jeremy Stoppelman
Chief Executive Officer

EX-31.2

EXHIBIT31.2

CERTIFICATION

I, David Schwarzbach, certify that:

1.	I have reviewed this Quarterly Report on Form 10-Q of Yelp Inc.;
2.	Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3.	Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;
4.	The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:
	a)	Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;
	b)	Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
	c)	Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
	d)	Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an Annual Report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and
5.	The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):
	a)	All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and
	b)	Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	August 6, 2021
/s/ David Schwarzbach
David Schwarzbach
Chief Financial Officer

EX-32.1

EXHIBIT32.1

CERTIFICATION

Pursuant to the requirement set forth in Rule 13a-14(b) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and Section 1350 of Chapter 63 of Title 18 of the United States Code (18 U.S.C. § 1350), Jeremy Stoppelman, Chief Executive Officer of Yelp Inc. (the “Company”), and David Schwarzbach, Chief Financial Officer of the Company, each hereby certifies that, to the best of his knowledge:

1.	The Company’s Quarterly Report on Form 10-Q for the period ended June 30, 2021, to which this Certification is attached as Exhibit 32.1 (the “Quarterly Report”), fully complies with the requirements of Section 13(a) or Section 15(d) of the Exchange Act; and
2.	The information contained in the Quarterly Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

In Witness Whereof, the undersigned have set their hands hereto as of the 6th day of August, 2021.

/s/ Jeremy Stoppelman	/s/ David Schwarzbach
Jeremy Stoppelman	David Schwarzbach
Chief Executive Officer	Chief Financial Officer

This certification accompanies the Quarterly Report on Form 10-Q to which it relates, is not deemed filed with the Securities and Exchange Commission and is not to be incorporated by reference into any filing of Yelp Inc. under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended (whether made before or after the date of the Quarterly Report on Form 10-Q), irrespective of any general incorporation language contained in such filing.

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City Area Code	(415)
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Document Fiscal Period Focus	Q2

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CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 558,227	$ 595,875
Accounts receivable (net of allowance for doubtful accounts of $9,289 and $11,559 at June 30, 2021 and December 31, 2020, respectively)	101,542	88,400
Prepaid expenses and other current assets	29,413	28,450
Total current assets	689,182	712,725
Property, equipment and software, net	92,627	101,718
Operating lease right-of-use assets	143,617	168,209
Goodwill	107,630	109,261
Intangibles, net	12,095	13,521
Restricted cash	1,027	665
Other non-current assets	59,066	48,848
Total assets	1,105,244	1,154,947
Current liabilities:
Accounts payable and accrued liabilities	106,190	87,760
Operating lease liabilities — current	47,858	51,161
Deferred revenue	5,175	4,109
Total current liabilities	159,223	143,030
Operating lease liabilities — long-term	134,448	148,935
Other long-term liabilities	8,109	8,448
Total liabilities	301,780	300,413
Commitments and contingencies (Note 12)
Stockholders' equity:
Common stock, $0.000001 par value — 200,000,000 shares authorized, 74,589,907 shares issued and 74,486,037 shares outstanding at June 30, 2021, and 75,371,368 shares issued and 75,272,350 shares outstanding at December 31, 2020	0	0
Additional paid-in capital	1,464,490	1,398,248
Treasury stock	(4,250)	(2,964)
Accumulated other comprehensive loss	(8,378)	(6,807)
Accumulated deficit	(648,398)	(533,943)
Total stockholders' equity	803,464	854,534
Total liabilities and stockholders' equity	$ 1,105,244	$ 1,154,947

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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Allowance for credit loss	$ 9,289	$ 11,559	$ 11,707	$ 7,686
Common stock, par value (in USD per share)	$ 0.000001	$ 0.000001
Common stock, shares authorized (in shares)	200,000,000	200,000,000
Common stock, shares issued (in shares)	74,589,907	75,371,368
Common stock, shares outstanding (in shares)	74,486,037	75,272,350

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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Statement [Abstract]
Net revenue	$ 257,188	$ 169,030	$ 489,284	$ 418,931
Costs and expenses:
Cost of revenue (exclusive of depreciation and amortization shown separately below)	17,993	11,825	32,867	28,672
Sales and marketing	113,641	96,289	226,550	233,586
Product development	68,695	53,969	136,687	121,082
General and administrative	45,095	26,402	76,956	69,938
Depreciation and amortization	12,833	12,582	25,916	24,940
Restructuring	12	3,312	32	3,312
Total costs and expenses	258,269	204,379	499,008	481,530
Loss from operations	(1,081)	(35,349)	(9,724)	(62,599)
Other income, net	542	495	1,247	2,878
Loss before income taxes	(539)	(34,854)	(8,477)	(59,721)
Benefit from income taxes	(4,751)	(10,864)	(6,893)	(20,228)
Net income (loss) attributable to common stockholders	$ 4,212	$ (23,990)	$ (1,584)	$ (39,493)
Net income (loss) per share attributable to common stockholders
Basic (in USD per share)	$ 0.06	$ (0.33)	$ (0.02)	$ (0.55)
Diluted (in USD per share)	$ 0.05	$ (0.33)	$ (0.02)	$ (0.55)
Weighted-average shares used to compute net income (loss) per share attributable to common stockholders
Basic (in shares)	74,807	72,413	75,025	71,980
Diluted (in shares)	78,983	72,413	75,025	71,980

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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 4,212	$ (23,990)	$ (1,584)	$ (39,493)
Other comprehensive income (loss):
Foreign currency translation adjustments, net of tax	1,181	1,018	(1,571)	(86)
Other comprehensive income (loss)	1,181	1,018	(1,571)	(86)
Comprehensive income (loss)	$ 5,393	$ (22,972)	$ (3,155)	$ (39,579)

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CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Additional Paid-In Capital	Treasury Stock	Accumulated Other Comprehensive Loss	Accumulated Deficit	Accumulated Deficit Cumulative Effect, Period of Adoption, Adjustment
Balance (in shares) at Dec. 31, 2019			71,185,468
Balance at beginning at Dec. 31, 2019	$ 754,991	$ (34)	$ 0	$ 1,259,803	$ 0	$ (11,759)	$ (493,053)	$ (34)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercises of employee stock options (in shares)			222,357
Issuance of common stock upon exercises of employee stock options	2,794			2,794
Issuance of common stock upon vesting of RSUs (in shares)			1,279,707
Issuance of common stock for employee stock purchase plan (in shares)			433,697
Issuance of common stock for employee stock purchase plan	8,014			8,014
Stock-based compensation (inclusive of capitalized stock-based compensation)	66,886			66,886
Shares withheld related to net share settlement of equity awards	(11,752)			(11,752)
Foreign currency adjustments, net of tax	(86)					(86)
Net income (loss)	(39,493)						(39,493)
Balance (in shares) at Jun. 30, 2020			73,121,229
Balance at end at Jun. 30, 2020	781,320		$ 0	1,325,745	0	(11,845)	(532,580)
Balance (in shares) at Mar. 31, 2020			71,887,846
Balance at beginning at Mar. 31, 2020	762,432		$ 0	1,283,885	0	(12,863)	(508,590)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercises of employee stock options (in shares)			21,510
Issuance of common stock upon exercises of employee stock options	209			209
Issuance of common stock upon vesting of RSUs (in shares)			778,176
Issuance of common stock for employee stock purchase plan (in shares)			433,697
Issuance of common stock for employee stock purchase plan	8,014			8,014
Stock-based compensation (inclusive of capitalized stock-based compensation)	33,637			33,637
Foreign currency adjustments, net of tax	1,018					1,018
Net income (loss)	(23,990)						(23,990)
Balance (in shares) at Jun. 30, 2020			73,121,229
Balance at end at Jun. 30, 2020	$ 781,320		$ 0	1,325,745	0	(11,845)	(532,580)
Balance (in shares) at Dec. 31, 2020	75,272,350		75,371,368
Balance at beginning at Dec. 31, 2020	$ 854,534		$ 0	1,398,248	(2,964)	(6,807)	(533,943)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercises of employee stock options (in shares)	564,923		564,923
Issuance of common stock upon exercises of employee stock options	$ 6,912			6,912
Issuance of common stock upon vesting of RSUs (in shares)			1,414,302
Issuance of common stock for employee stock purchase plan (in shares)			254,449
Issuance of common stock for employee stock purchase plan	8,675			8,675
Stock-based compensation (inclusive of capitalized stock-based compensation)	85,693			85,693
Shares withheld related to net share settlement of equity awards	(35,038)			(35,038)
Repurchases of common stock	$ (114,157)				(114,157)
Retirement of common stock (in shares)	(3,015,135)		(3,015,135)
Retirement of common stock	$ 0				112,871		(112,871)
Foreign currency adjustments, net of tax	(1,571)					(1,571)
Net income (loss)	$ (1,584)						(1,584)
Balance (in shares) at Jun. 30, 2021	74,486,037		74,589,907
Balance at end at Jun. 30, 2021	$ 803,464		$ 0	1,464,490	(4,250)	(8,378)	(648,398)
Balance (in shares) at Mar. 31, 2021			75,153,089
Balance at beginning at Mar. 31, 2021	827,100		$ 0	1,428,890	(3,313)	(9,559)	(588,918)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercises of employee stock options (in shares)			40,979
Issuance of common stock upon exercises of employee stock options	863			863
Issuance of common stock upon vesting of RSUs (in shares)			744,337
Issuance of common stock for employee stock purchase plan (in shares)			254,449
Issuance of common stock for employee stock purchase plan	8,675			8,675
Stock-based compensation (inclusive of capitalized stock-based compensation)	44,174			44,174
Shares withheld related to net share settlement of equity awards	(18,112)			(18,112)
Repurchases of common stock	(64,629)				(64,629)
Retirement of common stock (in shares)			(1,602,947)
Retirement of common stock	0				63,692		(63,692)
Foreign currency adjustments, net of tax	1,181					1,181
Net income (loss)	$ 4,212						4,212
Balance (in shares) at Jun. 30, 2021	74,486,037		74,589,907
Balance at end at Jun. 30, 2021	$ 803,464		$ 0	$ 1,464,490	$ (4,250)	$ (8,378)	$ (648,398)

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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Operating Activities
Net income (loss)	$ (1,584)	$ (39,493)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	25,916	24,940
Provision for doubtful accounts	7,240	21,897
Stock-based compensation	80,104	62,335
Noncash lease cost	20,712	20,984
Deferred income taxes	(7,755)	(14,263)
Asset impairment	11,164	0
Other adjustments, net	386	876
Changes in operating assets and liabilities:
Accounts receivable	(20,382)	12,910
Prepaid expenses and other assets	88	604
Operating lease liabilities	(22,489)	(22,520)
Accounts payable, accrued liabilities and other liabilities	15,707	(11,021)
Net cash provided by operating activities	109,107	57,249
Investing Activities
Sales and maturities of marketable securities — available-for-sale	0	290,395
Purchases of marketable securities — held-to-maturity	0	(87,438)
Maturities of marketable securities — held-to-maturity	0	93,200
Purchases of property, equipment and software	(13,286)	(17,004)
Other investing activities	90	328
Net cash (used in) provided by investing activities	(13,196)	279,481
Financing Activities
Proceeds from issuance of common stock for employee stock-based plans	15,587	10,808
Taxes paid related to the net share settlement of equity awards	(34,824)	(12,557)
Repurchases of common stock	(114,157)	0
Other financing activities	0	(356)
Net cash used in financing activities	(133,394)	(2,105)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	197	(340)
Change in cash, cash equivalents and restricted cash	(37,286)	334,285
Cash, cash equivalents and restricted cash — Beginning of period	596,540	192,318
Cash, cash equivalents and restricted cash — End of period	559,254	526,603
Supplemental Disclosures of Other Cash Flow Information
Refunds received for income taxes, net	(586)	(298)
Supplemental Disclosures of Noncash Investing and Financing Activities
Purchases of property, equipment and software recorded in accounts payable and accrued liabilities	1,295	615
Tax liabilities related to equity awards included in accounts payable and accrued liabilities	21	0
Operating lease right-of-use assets obtained in exchange for new operating lease liabilities	4,497	11,833
Repurchases of common stock recorded in accounts payable and accrued liabilities	$ 3,444	$ 0

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DESCRIPTION OF BUSINESS AND BASIS FOR PRESENTATION

6 Months Ended

Jun. 30, 2021

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Description of Business and Basis for Presentation

DESCRIPTION OF BUSINESS AND BASIS FOR PRESENTATION

Yelp Inc. was incorporated in Delaware on September 3, 2004. Except where specifically noted or the context otherwise requires, the use of terms such as the "Company" and "Yelp" in these Notes to Condensed Consolidated Financial Statements refers to Yelp Inc. and its subsidiaries.

Yelp is a trusted local resource for consumers and a partner in success for businesses of all sizes. Consumers trust Yelp for its extensive ratings and reviews of businesses across a broad range of categories, while businesses advertise on Yelp to reach its large audience of purchase-oriented and generally affluent consumers.

Basis of Presentation

The accompanying interim condensed consolidated financial statements are unaudited. These unaudited interim condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") and the applicable rules and regulations of the U.S. Securities and Exchange Commission ("SEC") regarding interim financial reporting. Certain information and note disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. Accordingly, these unaudited interim condensed consolidated financial statements should be read in conjunction with the consolidated financial statements contained in the Annual Report.

The unaudited condensed consolidated balance sheet as of December 31, 2020 included herein was derived from the audited consolidated financial statements as of that date, but does not include all disclosures required by GAAP, including certain notes to the financial statements. The unaudited interim condensed consolidated financial statements have been prepared on the same basis as the audited consolidated financial statements, except as set forth under "Recently Adopted Accounting Pronouncements" below.

In the opinion of management, the accompanying unaudited condensed consolidated financial statements include all adjustments of a normally recurring nature necessary for the fair presentation of the interim periods presented.

Principles of Consolidation

These unaudited interim condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany accounts and transactions have been eliminated upon consolidation.

Use of Estimates

The preparation of the Company’s unaudited interim condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of income and expenses during the reporting period. These estimates are based on information available as of the date of the condensed consolidated financial statements; therefore, actual results could differ from management’s estimates.

In early March 2020, COVID-19 was declared a global pandemic by the World Health Organization. Governments around the world, including in the United States, have implemented extensive measures in an effort to control the spread of COVID-19, including travel restrictions, limitations on business activity, quarantines and shelter-in-place orders. Due to the COVID-19 pandemic and the uncertainty of the extent of the impacts, certain estimates and assumptions have required and may continue to require increased judgment and carry a higher degree of variability and volatility than they did prior to the pandemic. As events continue to evolve and additional information becomes available, these estimates may materially change in future periods.

Significant Accounting Policies

There have been no material changes to the Company's significant accounting policies from those described in the Annual Report.

Recently Adopted Accounting Pronouncements

In December 2019, the Financial Accounting Standards Board issued Accounting Standards Update No. 2019-12, "Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes" ("ASU 2019-12"), which simplifies the accounting for income taxes by removing certain exceptions to the general principles for recording income taxes, while also simplifying certain recognition and allocation approaches to accounting for income taxes. The Company adopted ASU 2019-12 on January 1, 2021, and the adoption did not have a material impact on its consolidated financial statements.

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CASH, CASH EQUIVALENTS AND RESTRICTED CASH

6 Months Ended

Jun. 30, 2021

Cash and Cash Equivalents [Abstract]

Cash, Cash Equivalents and Restricted Cash

CASH, CASH EQUIVALENTS AND RESTRICTED CASH

Cash, cash equivalents and restricted cash as of June 30, 2021 and December 31, 2020 consisted of the following (in thousands):

	June 30, 2021		December 31, 2020
Cash	$	47,911	$	85,750
Cash equivalents	510,316		510,125
Total cash and cash equivalents	$	558,227	$	595,875
Restricted cash	1,027		665
Total cash, cash equivalents and restricted cash	$	559,254	$	596,540

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FAIR VALUE MEASUREMENTS

6 Months Ended

Jun. 30, 2021

Fair Value Disclosures [Abstract]

Fair Value Measurements

FAIR VALUE MEASUREMENTS

The Company’s investments in money market accounts are recorded as cash equivalents at fair value on the condensed consolidated balance sheets.

The accounting guidance for fair value measurements prioritizes the inputs used in measuring fair value in the following hierarchy:

Level 1—Observable inputs, such as quoted prices in active markets,

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

Level 3—Unobservable inputs in which there are little or no market data, which require the Company to develop its own assumptions.

This hierarchy requires the Company to use observable market data, when available, to minimize the use of unobservable inputs when determining fair value. The Company’s money market funds are classified within Level 1 of the fair value hierarchy because they are valued using quoted prices in active markets. The Company's certificates of deposit are classified within Level 2 of the fair value hierarchy because they have been valued using inputs other than quoted prices in active markets that are observable directly or indirectly.

The following table represents the fair value of the Company’s financial instruments, including those measured at fair value on a recurring basis, as of June 30, 2021 and December 31, 2020 (in thousands):

	June 30, 2021								December 31, 2020
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds	$	510,316	$	—	$	—	$	510,316	$	510,125	$	—	$	—	$	510,125
Other investments:
Certificates of deposit	—		10,000		—		10,000		—		10,933		—		10,933
Total cash equivalents and other investments	$	510,316	$	10,000	$	—	$	520,316	$	510,125	$	10,933	$	—	$	521,058

The certificates of deposit are reflected in prepaid expenses and other current assets on the condensed consolidated balance sheets as of June 30, 2021 and December 31, 2020.

The Company's long- and indefinite-lived assets, such as property, equipment and software, goodwill and other intangible assets, are measured at fair value on a non-recurring basis if the assets are determined to be impaired. The Company recognized an impairment charge related to right-of-use ("ROU") assets and leasehold improvements associated with certain of its operating leases that it subleased during the three months ended June 30, 2021. See Note 8, "Leases," for further details. The Company estimated the fair value of these assets as of the effective dates of the agreements using an income approach based on expected future cash flows from the subleased properties, which relied on certain assumptions made by management based on both internal and external data, such as the incremental borrowing rates used to discount these cash flows to its present values. As a result, these assets are classified within Level 3 of the fair value hierarchy.

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MARKETABLE SECURITIES

6 Months Ended

Jun. 30, 2021

Investments, Debt and Equity Securities [Abstract]

Marketable Securities

MARKETABLE SECURITIES

In March 2020, the Company changed its investment strategy in response to uncertainties resulting from the COVID-19 pandemic to allow for more flexibility in preserving liquidity, which led to the transfer of $300.2 million of amortized cost of its investment portfolio from a held-to-maturity classification to available-for-sale. As a result of this transfer, in March 2020, the Company reversed the allowance for credit loss that had been previously recorded upon adoption of Accounting Standards Update No. 2016-13, "Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments," and measured the securities at fair value as of the transfer date by recording an immaterial allowance for credit loss to other income, net and the remaining adjustment as an immaterial unrealized loss recorded to other comprehensive income.

Following this transfer, during the six months ended June 30, 2020, the Company liquidated its investment portfolio, which consisted of available-for-sale short- and long-term marketable securities, for proceeds of $253.4 million. The Company recorded an immaterial net realized gain to other income, net and reinvested the proceeds from the sales, along with $73.0 million from maturities and redemptions of marketable securities, into money market funds.

As of June 30, 2021 and December 31, 2020, the Company did not have any marketable securities and a majority of the Company's investments were in highly liquid money market funds.

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PREPAID EXPENSES AND OTHER CURRENT ASSETS

6 Months Ended

Jun. 30, 2021

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Prepaid Expenses and Other Current Assets

PREPAID EXPENSES AND OTHER CURRENT ASSETS

Prepaid expenses and other current assets as of June 30, 2021 and December 31, 2020 consisted of the following (in thousands):

	June 30, 2021		December 31, 2020
Prepaid expenses	$	12,026	$	10,438
Certificates of deposit	10,000		10,930
Other current assets	7,387		7,082
Total prepaid expenses and other current assets	$	29,413	$	28,450

Prepaid expenses included $0.8 million of capitalized implementation costs incurred related to cloud computing arrangements that are service contracts. The Company recorded an immaterial amount of amortization expense during the three and six months ended June 30, 2021 related to these capitalized implementation costs. As of June 30, 2021, other current assets primarily consisted of deferred costs related to unsettled share repurchases, short-term deposits and non-trade receivables.

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PROPERTY, EQUIPMENT AND SOFTWARE, NET

6 Months Ended

Jun. 30, 2021

Property, Plant and Equipment [Abstract]

Property, Equipment and Software, Net

PROPERTY, EQUIPMENT AND SOFTWARE, NET

Property, equipment and software, net as of June 30, 2021 and December 31, 2020 consisted of the following (in thousands):

	June 30, 2021		December 31, 2020
Capitalized website and internal-use software development costs	$	187,418	$	171,831
Leasehold improvements(1)	81,776		88,687
Computer equipment	46,223		46,581
Furniture and fixtures	16,466		18,339
Telecommunication	4,965		4,951
Software	1,718		1,717
Total	338,566		332,106
Less accumulated depreciation	(245,939)		(230,388)
Property, equipment and software, net	$	92,627	$	101,718

(1) The cost basis was reduced to reflect an impairment of $2.7 million recorded during the three months ended June 30, 2021. For more information, see Note 8, "Leases."

Depreciation expense was $12.1 million and $12.0 million for the three months ended June 30, 2021 and 2020, respectively, and $24.5 million and $23.7 million for the six months ended June 30, 2021 and 2020, respectively.

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GOODWILL AND INTANGIBLE ASSETS

6 Months Ended

Jun. 30, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

GOODWILL AND INTANGIBLE ASSETS

The Company’s goodwill is the result of its acquisitions of other businesses, and represents the excess of purchase consideration over the fair value of assets acquired and liabilities assumed. The Company performed its annual goodwill impairment analysis as of August 31, 2020 and concluded that goodwill was not impaired, as the fair value of the reporting unit exceeded its carrying value.

The changes in carrying amount of goodwill during the six months ended June 30, 2021 were as follows (in thousands):

Balance as of December 31, 2020	$	109,261
Effect of currency translation	(1,631)
Balance as of June 30, 2021	$	107,630

Intangible assets that were not fully amortized as of June 30, 2021 and December 31, 2020 consisted of the following (dollars in thousands):

	June 30, 2021
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Weighted Average Remaining Life
Business relationships	$	9,918	$	(4,299)	$	5,619	7.4	years
Developed technology	7,709		(6,846)		863		0.7	years
Licensing agreements	6,129		(538)		5,591		8.7	years
Domains and data licenses	2,869		(2,847)		22		2.0	years
Total	$	26,625	$	(14,530)	$	12,095

	December 31, 2020
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Weighted Average Remaining Life
Business relationships	$	9,918	$	(3,814)	$	6,104	7.8	years
Developed technology	7,709		(6,238)		1,471		1.2	years
Licensing agreements	6,129		(215)		5,914		9.2	years
Domain and data licenses	2,869		(2,837)		32		2.2	years
Total	$	26,625	$	(13,104)	$	13,521

Amortization expense was $0.7 million and $0.6 million for the three months ended June 30, 2021 and 2020, respectively, and $1.4 million and $1.2 million for the six months ended June 30, 2021 and 2020, respectively.

As of June 30, 2021, estimated future amortization expenses were as follows (in thousands):

Remainder of 2021	$	1,422
2022	1,676
2023	1,359
2024	1,353
2025	1,353
2026	1,353
Thereafter	3,579
Total amortization	$	12,095

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LEASES

6 Months Ended

Jun. 30, 2021

Leases [Abstract]

Leases

LEASES

The components of lease cost, net for the three and six months ended June 30, 2021 and 2020 were as follows (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Operating lease cost	$	12,631	$	13,987	$	26,394	$	27,798
Short-term lease cost (12 months or less)	136		341		273		701
Sublease income	(1,778)		(1,954)		(3,406)		(3,914)
Total lease cost, net	$	10,989	$	12,374	$	23,261	$	24,585

The Company's leases and subleases do not include any variable lease payments, residual value guarantees, related-party leases, or restrictions or covenants that would limit or prevent the Company from exercising its right to obtain substantially all of the economic benefits from use of the respective assets during the lease term.

Supplemental cash flow information related to leases for the six months ended June 30, 2021 and 2020 was as follows (in thousands):

	Six Months Ended June 30,
	2021		2020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	27,784	$	29,749

As of June 30, 2021, maturities of lease liabilities were as follows (in thousands):

Remainder of 2021	$	24,602
2022	48,688
2023	45,801
2024	43,028
2025	22,459
2026	7,502
Thereafter	17,075
Total minimum lease payments	209,155
Less imputed interest	(26,849)
Present value of lease liabilities	$	182,306

As of June 30, 2021 and December 31, 2020, the weighted-average remaining lease terms and weighted-average discount rates were as follows:

	June 30, 2021	December 31, 2020
Weighted-average remaining lease term (years) — operating leases	4.8	5.1
Weighted-average discount rate — operating leases	5.9 %	6.0	%

In October 2020, the Company entered into a lease agreement for an office facility in Toronto, Canada for which the lease term is expected to commence in August 2021 and expire in 2031. The Company expects to classify this as an operating lease and, as of June 30, 2021, expected to recognize operating lease cost of approximately $9.7 million over the life of the lease.

During the three months ended June 30, 2021, the Company entered into sublease agreements for portions of its office space in San Francisco and New York. The Company evaluated the associated ROU assets and leasehold improvements for impairment as a result of the subleases in accordance with Accounting Standards Codification Topic 360, "Property, Plant, and Equipment" because the change in circumstances indicated that the carrying amount of such assets may not be recoverable. The Company compared the future undiscounted cash flows under the sublease agreements to the carrying amounts of the respective ROU assets and leasehold improvements and determined that an impairment existed.

The Company compared the carrying values of the impacted assets to the fair values to determine the impairment amount. The Company recognized an impairment charge of $11.2 million during the three months ended June 30, 2021, which is included in general and administrative expenses on its condensed consolidated statement of operations, and reduced the carrying amount of the ROU assets and leasehold improvements by $8.5 million and $2.7 million, respectively.

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OTHER NON-CURRENT ASSETS

6 Months Ended

Jun. 30, 2021

Other Assets, Noncurrent Disclosure [Abstract]

Other Non-Current Assets

OTHER NON-CURRENT ASSETS

Other non-current assets as of June 30, 2021 and December 31, 2020 consisted of the following (in thousands):

	June 30, 2021		December 31, 2020
Deferred tax assets	$	39,013	$	31,163
Deferred contract costs	15,413		14,522
Other non-current assets	4,640		3,163
Total other non-current assets	$	59,066	$	48,848

Deferred contract costs as of June 30, 2021 and December 31, 2020, and changes in deferred contract costs during the six months ended June 30, 2021, were as follows (in thousands):

	Six Months Ended June 30, 2021
Balance, beginning of period	$	14,522
Add: costs deferred on new contracts	7,721
Less: amortization recorded in sales and marketing expenses	(6,830)
Balance, end of period	$	15,413

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CONTRACT BALANCES

6 Months Ended

Jun. 30, 2021

Revenue from Contract with Customer [Abstract]

Contract Balances

CONTRACT BALANCES

The changes in the allowance for doubtful accounts during the six months ended June 30, 2021 and 2020 were as follows (in thousands):

	Six Months Ended June 30,
	2021		2020
Balance, beginning of period	$	11,559	$	7,686
Add: provision for doubtful accounts	7,240		21,897
Less: write-offs, net of recoveries	(9,510)		(17,876)
Balance, end of period	$	9,289	$	11,707

The net decrease in the allowance for doubtful accounts in the six months ended June 30, 2021 was primarily a result of a reduction in expected customer delinquencies compared to June 30, 2020, as collection rates continued to improve. The net increase in the allowance for doubtful accounts in the six months ended June 30, 2020 primarily related to an anticipated increase in customer delinquencies due to the COVID-19 pandemic. In calculating the allowance for doubtful accounts as of June 30, 2021 and 2020, the Company considered expectations of probable credit losses, including probable credit losses associated with the COVID-19 pandemic, based on observed trends in cancellations, observed changes in the credit risk of specific customers, the impact of anticipated closures and bankruptcies using forecasted economic indicators in addition to historical experience and loss patterns during periods of macroeconomic uncertainty.

Contract liabilities consist of deferred revenue, which is recorded on the condensed consolidated balance sheets when the Company has received consideration, or has the right to receive consideration, in advance of transferring the performance obligations under the contract to the customer.

The changes in deferred revenue during the six months ended June 30, 2021 were as follows (in thousands):

	Six Months Ended June 30, 2021
Balance, beginning of period	$	4,109
Less: recognition of deferred revenue from beginning balance	(2,759)
Add: net increase in current period contract liabilities	3,825
Balance, end of period	$	5,175

The majority of the deferred revenue balance as of June 30, 2021 is expected to be recognized as revenue in the subsequent three-month period ending September 30, 2021. No other contract assets or liabilities were recorded on the Company's condensed consolidated balance sheets as of June 30, 2021 and December 31, 2020.

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ACCOUNTS PAYABLE AND ACCRUED LIABILITIES

6 Months Ended

Jun. 30, 2021

Payables and Accruals [Abstract]

Accounts Payable and Accrued Liabilities

ACCOUNTS PAYABLE AND ACCRUED LIABILITIES

Accounts payable and accrued liabilities as of June 30, 2021 and December 31, 2020 consisted of the following (in thousands):

	June 30, 2021		December 31, 2020
Accounts payable	$	14,373	$	8,853
Employee-related liabilities	66,225		57,684
Accrued sales and marketing expenses	8,042		2,137
Accrued cost of revenue	5,381		8,269
Other accrued liabilities	12,169		10,817
Total accounts payable and accrued liabilities	$	106,190	$	87,760

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COMMITMENTS AND CONTINGENCIES

6 Months Ended

Jun. 30, 2021

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

COMMITMENTS AND CONTINGENCIES

Legal Proceedings—In January 2018, a putative class action lawsuit alleging violations of the federal securities laws was filed in the U.S. District Court for the Northern District of California, naming as defendants the Company and certain of its officers. The complaint, which the plaintiff amended on June 25, 2018, alleges violations of the Exchange Act by the Company and its officers for allegedly making materially false and misleading statements regarding its business and operations on February 9, 2017. The plaintiff seeks unspecified monetary damages and other relief. On August 2, 2018, the Company and the other defendants filed a motion to dismiss the amended complaint, which the court granted in part and denied in part on November 27, 2018. On October 22, 2019, the Court approved a stipulation to certify a class in this action. The case remains pending. The Company is unable to reasonably estimate either the probability of incurring a loss or an estimated range of such loss, if any, from the lawsuit.

The Company is subject to other legal proceedings arising in the ordinary course of business. Although the results of litigation and claims cannot be predicted with certainty, the Company currently does not believe that the final outcome of any of these other matters will have a material effect on the Company’s business, financial position, results of operations or cash flows.

Indemnification Agreements—In the ordinary course of business, the Company may provide indemnifications of varying scope and terms to customers, vendors, lessors, business partners and other parties with respect to certain matters, including, but not limited to, losses arising out of breach of such agreements, services to be provided by the Company or from intellectual property infringement claims made by third parties.

In addition, the Company has entered into indemnification agreements with directors and certain officers and employees that will require the Company to, among other things, indemnify them against certain liabilities that may arise by reason of their status or service as directors, officers or employees.

While the outcome of claims cannot be predicted with certainty, the Company does not believe that the outcome of any claims under the indemnification arrangements will have a material effect on the Company’s business, financial position, results of operations or cash flows.

Revolving Credit Facility—The Company is a party to a Credit Agreement with Wells Fargo Bank, National Association (the "Credit Agreement"), which provides for a three-year, $75.0 million senior unsecured revolving credit facility including a

letter of credit sub-limit of $25.0 million. As of June 30, 2021, the Company had $21.5 million of letters of credit under the sub-limit related to lease agreements for certain office locations, which are required to be maintained and issued to the landlords of each facility, and $53.5 million remained available under the revolving credit facility as of this date. The Company was in compliance with all covenants associated with the credit facility and there were no loans outstanding under the Credit Agreement as of June 30, 2021. For additional information on the terms of the Credit Agreement, including fees payable by the Company, financial covenants, events of default and other limitations, see "Management's Discussion and Analysis of Financial Condition and Results of Operations—Liquidity and Capital Resources" included under Part II, Item 7 in our Annual Report.

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STOCKHOLDERS' EQUITY

6 Months Ended

Jun. 30, 2021

Stockholders' Equity Note [Abstract]

Stockholders' Equity

STOCKHOLDERS’ EQUITY

The following table presents the number of shares authorized and issued as of the dates indicated:

	June 30, 2021		December 31, 2020
	Shares Authorized	Shares Issued	Shares Authorized	Shares Issued
Stockholders’ equity:
Common stock, $0.000001 par value	200,000,000	74,589,907	200,000,000	75,371,368
Undesignated preferred stock	10,000,000	—	10,000,000	—

Stock Repurchase Program

In July 2017, the Company’s board of directors authorized a stock repurchase program under which the Company was authorized to repurchase up to $200.0 million of its outstanding common stock. The Company's board of directors authorized the Company to repurchase up to an additional $250.0 million of its outstanding common stock in each of November 2018, February 2019, and January 2020, bringing the total amount of authorized repurchases to $950.0 million as of June 30, 2021, $130.4 million of which remained available as of June 30, 2021. The Company may purchase shares at management’s discretion in the open market, in privately negotiated transactions, in transactions structured through investment banking institutions, or a combination of the foregoing.

During the six months ended June 30, 2021, the Company repurchased on the open market 3,019,987 shares for an aggregate purchase price of $114.2 million and retired 3,015,135 shares. As of June 30, 2021, the Company had a treasury stock balance of 103,870 shares, which were excluded from its outstanding share count as of such date and subsequently retired in July 2021.

The Company did not repurchase any shares during the six months ended June 30, 2020.

Equity Incentive Plans

Stock Options

Stock options are granted at a price per share not less than the fair value of a share of the Company’s common stock on the grant date. Options generally vest over a four-year period, on one of two schedules: (a) 25% vesting at the end of one year and the remaining shares vesting monthly thereafter or (b) ratably on a monthly basis. Options granted are generally exercisable for contractual terms of up to 10 years. The Company issues new shares when stock options are exercised.

A summary of stock option activity for the six months ended June 30, 2021 is as follows:

	Number of Shares	Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Term (in years)	Aggregate Intrinsic Value (in thousands)
Outstanding at December 31, 2020	4,622,828	$	29.89	4.7	$	30,451
Granted	80,000	39.17
Exercised	(564,923)	12.24
Canceled	(29,275)	49.09
Outstanding at June 30, 2021	4,108,630	$	32.36	4.8	$	38,326
Options vested and exercisable at June 30, 2021	3,632,114	$	31.80	4.4	$	36,462

Aggregate intrinsic value represents the difference between the closing price of the Company’s common stock as quoted on the New York Stock Exchange on a given date and the exercise price of outstanding, in-the-money options. The total intrinsic value of options exercised was approximately $0.7 million and $0.2 million for the three months ended June 30, 2021 and 2020, respectively, and $11.8 million and $4.4 million for the six months ended June 30, 2021 and 2020, respectively.

The weighted-average grant date fair value of options granted during the three and six months ended June 30, 2021 was $18.55 per share. There were no options granted during the three months ended June 30, 2020. The weighted-average grant date fair value of options granted during the six months ended June 30, 2020 was $11.13 per share.

As of June 30, 2021, total unrecognized compensation costs related to nonvested stock options were approximately $7.5 million, which the Company expects to recognize over a weighted-average time period of 2.0 years.

RSUs

RSUs generally vest over a four-year period, on one of two schedules: (a) 25% vesting at the end of one year and the remaining vesting quarterly thereafter or (b) ratably on a quarterly basis.

RSUs also include performance-based restricted stock units ("PRSUs"), which are subject to both a time-based vesting schedule and either (a) a market condition or (b) the achievement of performance goals. The time-based vesting schedule is quarterly over four years (the "Time-Based Vesting Schedule"). For PRSUs subject to a market condition, the Company recognizes expense from the date of grant. For PRSUs subject to performance goals, the Company recognizes expense when it is probable that the performance condition will be achieved.

The shares underlying each PRSU award subject to a market condition will be eligible to vest only if the average closing price of the Company's common stock equals or exceeds $45.3125 over any 60-day trading period during the four years following the grant date of February 7, 2019. If this market condition is met, the shares underlying each PRSU award will vest according to the Time-Based Vesting Schedule. Any shares subject to the PRSUs that have met the Time-Based Vesting Schedule at the time the market condition is achieved will fully vest as of such date; thereafter, any remaining nonvested shares subject to the PRSUs will continue vesting solely according to the Time-Based Vesting Schedule, subject to the applicable employee's continued service as of each such vesting date.

For PRSUs subject to performance goals, a percentage of the target number of shares, ranging from zero to 200%, will become eligible to vest based on the Company's level of achievement of certain financial targets, subject to the Time-Based Vesting Schedule. The shares subject to performance goals become eligible to vest once the achievement against the financial targets is known, which will be no later than March of the following year. On the quarterly vest date immediately following such determination (or a vest date otherwise specified in the agreement), the eligible shares, if any, will vest to the extent that the employee has met the Time-Based Vesting Schedule as of such date. Thereafter, the eligible shares will continue to vest in accordance with the Time-Based Vesting Schedule, subject to the applicable employee's continued service as of each such vesting date. The Company performed an analysis as of June 30, 2021 to assess the probability of achievement of the PRSU financial targets and, as a result, recorded compensation costs in the three and six months ended June 30, 2021 for the PRSUs that it expected to vest.

As the PRSU activity during the six months ended June 30, 2021 was not material, it is presented together with the RSU activity in the table below. A summary of RSU and PRSU activity for the six months ended June 30, 2021 is as follows:

	Number of Shares	Weighted-Average Grant Date Fair Value
Nonvested at December 31, 2020	9,757,787	$	29.22
Granted	4,909,615	36.10
Vested(1)	(2,337,449)	31.84
Canceled	(1,331,918)	31.62
Nonvested at June 30, 2021	10,998,035	$	31.44

(1) Includes 923,147 shares that vested but were not issued due to net share settlement for payment of employee taxes.

The aggregate fair value as of the vest date of RSUs and PRSUs that vested during the six months ended June 30, 2021 and 2020 was $88.7 million and $46.1 million, respectively. As of June 30, 2021, the Company had approximately $336.6 million of unrecognized stock-based compensation expense related to RSUs and PRUSs, which it expects to recognize over the remaining weighted-average vesting period of approximately 2.8 years.

Employee Stock Purchase Plan

The Employee Stock Purchase Plan ("ESPP") allows eligible employees to purchase shares of the Company’s common stock at a discount through payroll deductions of up to 15% of their eligible compensation, subject to any plan limitations, during designated offering periods. At the end of each offering period, employees are able to purchase shares at 85% of the fair market value of the Company’s common stock on the last day of the offering period, based on the closing sales price of the Company's common stock as quoted on the New York Stock Exchange on such date.

There were 254,449 shares purchased by employees under the ESPP at a weighted-average price of $34.09 in the three and six months ended June 30, 2021. There were 433,697 shares purchased by employees under the ESPP at a weighted-average price of $18.48 in the three and six months ended June 30, 2020. The Company recognized stock-based compensation expense related to the ESPP of $0.7 million and $0.5 million in the three months ended June 30, 2021 and 2020, respectively, and $1.5 million and $1.3 million for the six months ended June 30, 2021 and 2020, respectively.

Stock-Based Compensation

The following table summarizes the effects of stock-based compensation expense related to stock-based awards in the condensed consolidated statements of operations during the periods presented (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Cost of revenue	$	1,094	$	943	$	2,202	$	1,986
Sales and marketing	8,441		7,302		16,838		14,998
Product development	20,674		16,827		41,427		34,582
General and administrative	10,650		5,513		19,637		10,769
Total stock-based compensation recorded to loss before income taxes	40,859		30,585		80,104		62,335
Benefit from income taxes	(9,501)		(11,652)		(19,566)		(24,209)
Total stock-based compensation recorded to net income (loss)	$	31,358	$	18,933	$	60,538	$	38,126

The Company capitalized $2.8 million and $2.2 million of stock-based compensation expense as website development costs in the three months ended June 30, 2021 and 2020, respectively, and $5.5 million and $4.5 million in the six months ended June 30, 2021 and 2020, respectively.

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OTHER INCOME, NET

6 Months Ended

Jun. 30, 2021

Other Income and Expenses [Abstract]

Other Income, Net

OTHER INCOME, NET

Other income, net for the three and six months ended June 30, 2021 and 2020 consisted of the following (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Interest (expense) income, net	$	(34)	$	191	$	(51)	$	2,297
Transaction gain (loss) on foreign exchange	11		8		268		(60)
Other non-operating income, net	565		296		1,030		641
Other income, net	$	542	$	495	$	1,247	$	2,878

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INCOME TAXES

6 Months Ended

Jun. 30, 2021

Income Tax Disclosure [Abstract]

Income Taxes

INCOME TAXES

The Company is subject to income tax in the United States as well as other tax jurisdictions in which it conducts business. Earnings from non-U.S. activities are subject to local country income tax. The benefit from income taxes for the six months ended June 30, 2021 was $6.9 million, which was due to $1.5 million of U.S. federal, state and foreign income tax benefit and $5.4 million of net discrete tax benefit primarily related to stock-based compensation. The benefit from income taxes for the six months ended June 30, 2020 was $20.2 million, which was due to $24.3 million of U.S. federal, state and foreign income tax benefit, offset by $4.1 million of net discrete tax expense.

On March 27, 2020, the Coronavirus Aid, Relief, and Economic Security Act (the "CARES Act") was signed into law. The CARES Act includes, among other items, provisions relating to refundable payroll tax credits, deferral of the employer portion of certain payroll taxes, net operating loss carryback periods, alternative minimum tax credit refunds, modifications to the net interest deduction limitations and technical corrections to tax depreciation methods for qualified improvement property.

The CARES Act allows losses incurred in 2018, 2019 and 2020 to be carried back to each of the five preceding tax years and to offset 100% of regular taxable income. Additionally, the CARES Act accelerates the Company’s ability to receive refunds of alternative minimum tax credits generated in prior tax years.

Accounting for income taxes for interim periods generally requires the provision for income taxes to be determined by applying an estimate of the annual effective tax rate for the full fiscal year to income or loss before income taxes, excluding unusual or infrequently occurring discrete items ("Ordinary" income), for the reporting period. For the three and six months ended June 30, 2021, the difference between the effective tax rate and the federal statutory tax rate primarily related to tax credits, offset by non-deductible expenses. For the three and six months ended June 30, 2020, the difference between the effective tax rate and the federal statutory tax rate primarily related to net operating loss provisions adopted under the CARES Act and tax credits.

As of June 30, 2021, the total amount of gross unrecognized tax benefits was $52.4 million, $22.8 million of which was subject to a full valuation allowance and would not affect the Company’s effective tax rate if recognized. In the three and six months ended June 30, 2021, the Company recorded an immaterial amount of interest and penalties.

As of June 30, 2021, the Company estimated that it had accumulated undistributed earnings generated by its foreign subsidiaries of approximately $8.0 million. Any taxes due with respect to such earnings or the excess of the amount for financial reporting over the tax basis of the Company's foreign investments would generally be limited to foreign and state taxes. The Company has not recognized a deferred tax liability related to un-remitted foreign earnings, as it intends to indefinitely reinvest these earnings, and expects future U.S. cash generation to be sufficient to meet future U.S. cash needs.

In addition, the Company is subject to the continuous examination of its income tax returns by the Internal Revenue Service and other tax authorities. The Company’s federal and state income tax returns for tax years subsequent to 2003 remain open to examination. In the Company’s foreign jurisdictions — Canada, Germany, Ireland and the United Kingdom — the tax years subsequent to 2015 remain open to examination. The Company regularly assesses the likelihood of adverse outcomes resulting from examinations to determine the adequacy of its provision for income taxes and monitors the progress of ongoing discussions with tax authorities and the impact, if any, of the expected expiration of the statute of limitations in various taxing jurisdictions. The Company believes that an adequate provision has been made for any adjustments that may result from tax examinations. However, the outcome of tax audits cannot be predicted with certainty. If any issues addressed in the Company’s tax audits are resolved in a manner not consistent with management’s expectations, the Company could be required to adjust its provision for income taxes in the period such resolution occurs. As of June 30, 2021, although the timing of the resolution or closure of audits is not certain, the Company believes it is reasonably possible that its unrecognized tax benefits could be reduced by $6.3 million over the next 12 months.

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NET INCOME (LOSS) PER SHARE

6 Months Ended

Jun. 30, 2021

Earnings Per Share [Abstract]

Net Income (Loss) Per Share

NET INCOME (LOSS) PER SHARE

Basic net income (loss) per share is computed using the weighted-average number of outstanding shares of common stock during the period. Diluted net income (loss) per share is computed using the weighted-average number of outstanding shares of common stock and, when dilutive, potential shares of common stock outstanding during the period. Potential common shares consist of the incremental shares of common stock issuable upon the exercise of stock options, shares issuable upon the vesting of RSUs (including PRSUs) and, to a lesser extent, purchase rights related to the ESPP.

The following table presents the calculation of basic and diluted net income (loss) per share for the periods presented (in thousands, except per share data):

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Basic net income (loss) per share:
Net income (loss)	$	4,212	$	(23,990)	$	(1,584)	$	(39,493)
Shares used in computation:
Weighted-average common shares outstanding	74,807		72,413		75,025		71,980
Basic net income (loss) per share attributable to common stockholders	$	0.06	$	(0.33)	$	(0.02)	$	(0.55)

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Diluted net income (loss) per share:
Net income (loss)	$	4,212	$	(23,990)	$	(1,584)	$	(39,493)
Shares used in computation:
Weighted-average common shares outstanding	74,807		72,413		75,025		71,980
Stock options	877		—		—		—
RSUs	3,291		—		—		—
ESPP	8		—		—		—
Number of shares used in diluted calculation	78,983		72,413		75,025		71,980
Diluted net income (loss) per share attributable to common stockholders	$	0.05	$	(0.33)	$	(0.02)	$	(0.55)

The following stock-based instruments were excluded from the calculation of diluted net income (loss) per share because their effect would have been anti-dilutive for the periods presented (in thousands):

	Three Months Ended June 30,		Six Months Ended June 30,
	2021	2020	2021	2020
Stock options	1,497	5,947	4,109	5,947
RSUs	145	7,876	10,998	7,876
ESPP	—	48	41	48

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INFORMATION ABOUT REVENUE AND GEOGRAPHIC AREAS

6 Months Ended

Jun. 30, 2021

Segment Reporting [Abstract]

Information About Revenue and Geographic Areas

INFORMATION ABOUT REVENUE AND GEOGRAPHIC AREASThe Company considers operating segments to be components of the Company for which separate financial information is available and evaluated regularly by the Company’s chief operating decision maker in deciding how to allocate resources and in assessing performance. The chief operating decision maker for the Company is the chief executive officer. The chief executive officer reviews financial information presented on a consolidated basis, accompanied by information about revenue by product line and geographic region for purposes of allocating resources and evaluating financial performance.

The Company has determined that it has a single operating and reporting segment. When the Company communicates results externally, it disaggregates net revenue into major product lines and primary geographical markets, which is based on the billing address of the customer. The disaggregation of net revenue by major product lines is based on the type of service provided and also aligns with the timing of revenue recognition for each. To reflect the Company's strategic focus on creating differentiated experiences for its Services categories and Restaurants, Retail & Other categories, the Company further disaggregates advertising revenue to reflect these two high-level category groupings. The Services categories consist of the following businesses: home, local, auto, professional, pets, events, real estate and financial services. The Restaurants, Retail & Other categories consist of the following businesses: restaurants, shopping, beauty & fitness, health and other.

Net Revenue

The following table presents the Company’s net revenue by major product line (and by category for advertising revenue) for the periods presented (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Net revenue by product:
Advertising revenue by category:
Services	$	152,522	$	109,583	$	293,209	$	242,665
Restaurants, Retail & Other	92,439		52,650		173,739		159,661
Advertising	244,961		162,233		466,948		402,326
Transactions	3,525		3,968		7,329		6,607
Other	8,702		2,829		15,007		9,998
Total net revenue	$	257,188	$	169,030	$	489,284	$	418,931

During the three and six months ended June 30, 2021 and 2020, no individual customer accounted for 10% or more of consolidated net revenue.

As a result of the COVID-19 pandemic, the Company considered whether there was any impact to the manner in which revenue is recognized, in particular with respect to the collectability criteria for recognizing revenue from contracts with customers. The Company did not change the manner in which it recognizes revenue as a result of that assessment.

The Company offered a number of relief incentives to advertising and other revenue customers most impacted by the COVID-19 pandemic totaling $0.7 million and $13.3 million during the three months ended June 30, 2021 and 2020, respectively, and $2.9 million and $17.9 million during the six months ended June 30, 2021 and 2020, respectively. These incentives were primarily in the form of waived advertising fees and waived subscription fees. The Company accounted for these incentives as price concessions and reduced net revenue recognized in the three and six months ended June 30, 2021 and 2020 accordingly. During the three months ended June 30, 2020, the Company also paused certain advertising campaigns that were scheduled to run from April to May 2020 and offered certain free advertising products during those months with a total value of $14.5 million. All paused advertising campaigns that were not cancelled by customers resumed by the end of May 2020.

The following table presents the Company’s net revenue by major geographic region for the periods presented (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
United States	$	254,954	$	167,270	$	484,949	$	413,797
All other countries	2,234		1,760		4,335		5,134
Total net revenue	$	257,188	$	169,030	$	489,284	$	418,931

Long-Lived Assets

The following table presents the Company’s long-lived assets by major geographic region for the periods presented (in thousands):

	June 30, 2021		December 31, 2020
United States	$	88,688	$	97,548
All other countries	3,939		4,170
Total long-lived assets	$	92,627	$	101,718

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RESTRUCTURING

6 Months Ended

Jun. 30, 2021

Restructuring and Related Activities [Abstract]

Restructuring

RESTRUCTURING

In April 2020, the Company announced a restructuring plan to help manage the near-term financial impacts of the COVID-19 pandemic (the "Restructuring Plan"). In addition to reductions and deferrals in spending, the Restructuring Plan’s cost-cutting measures included workforce reductions affecting approximately 1,000 employees and furloughs affecting approximately 1,100 additional employees, as well as salary reductions and reduced-hour work weeks. In July 2020, the Company announced an additional workforce reduction (separate from the Restructuring Plan) affecting approximately 60 employees.

During the three months ended September 30, 2020, the Company restored reduced salaries and returned many of its furloughed employees.

The Company incurred an immaterial amount of restructuring costs during the three and six months ended June 30, 2021 and does not expect to incur any material additional restructuring costs. The Company incurred $3.3 million in restructuring costs during the three and six months ended June 30, 2020 in connection with terminations under the Restructuring Plan, which represent expenditures for severance, payroll taxes and related benefits costs. These costs were recorded as restructuring expenses on the Company's condensed consolidated statements of operations.

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SUBSEQUENT EVENTS	6 Months Ended
	Jun. 30, 2021
Subsequent Events [Abstract]
Subsequent Events	SUBSEQUENT EVENTSOn August 3, 2021, the Company's board of directors authorized a $250.0 million increase to its stock repurchase program, bringing the total amount of repurchases authorized under our stock repurchase program since its inception in 2017 to $1.2 billion. The Company repurchased $35.8 million of shares subsequent to June 30, 2021, resulting in approximately $344.6 million remaining available for future repurchases following the increase on August 3, 2021.

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DESCRIPTION OF BUSINESS AND BASIS FOR PRESENTATION (Policies)

6 Months Ended

Jun. 30, 2021

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

Basis of Presentation

The accompanying interim condensed consolidated financial statements are unaudited. These unaudited interim condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") and the applicable rules and regulations of the U.S. Securities and Exchange Commission ("SEC") regarding interim financial reporting. Certain information and note disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. Accordingly, these unaudited interim condensed consolidated financial statements should be read in conjunction with the consolidated financial statements contained in the Annual Report.

The unaudited condensed consolidated balance sheet as of December 31, 2020 included herein was derived from the audited consolidated financial statements as of that date, but does not include all disclosures required by GAAP, including certain notes to the financial statements. The unaudited interim condensed consolidated financial statements have been prepared on the same basis as the audited consolidated financial statements, except as set forth under "Recently Adopted Accounting Pronouncements" below.

In the opinion of management, the accompanying unaudited condensed consolidated financial statements include all adjustments of a normally recurring nature necessary for the fair presentation of the interim periods presented.

Principles of Consolidation

Principles of Consolidation

These unaudited interim condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany accounts and transactions have been eliminated upon consolidation.

Use of Estimates

Use of Estimates

The preparation of the Company’s unaudited interim condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of income and expenses during the reporting period. These estimates are based on information available as of the date of the condensed consolidated financial statements; therefore, actual results could differ from management’s estimates.

In early March 2020, COVID-19 was declared a global pandemic by the World Health Organization. Governments around the world, including in the United States, have implemented extensive measures in an effort to control the spread of COVID-19, including travel restrictions, limitations on business activity, quarantines and shelter-in-place orders. Due to the COVID-19 pandemic and the uncertainty of the extent of the impacts, certain estimates and assumptions have required and may continue to require increased judgment and carry a higher degree of variability and volatility than they did prior to the pandemic. As events continue to evolve and additional information becomes available, these estimates may materially change in future periods.

Recently Adopted Accounting Pronouncements

Recently Adopted Accounting Pronouncements

In December 2019, the Financial Accounting Standards Board issued Accounting Standards Update No. 2019-12, "Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes" ("ASU 2019-12"), which simplifies the accounting for income taxes by removing certain exceptions to the general principles for recording income taxes, while also simplifying certain recognition and allocation approaches to accounting for income taxes. The Company adopted ASU 2019-12 on January 1, 2021, and the adoption did not have a material impact on its consolidated financial statements.

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CASH, CASH EQUIVALENTS AND RESTRICTED CASH (Tables)

6 Months Ended

Jun. 30, 2021

Cash and Cash Equivalents [Abstract]

Schedule of Cash and Cash Equivalents

Cash, cash equivalents and restricted cash as of June 30, 2021 and December 31, 2020 consisted of the following (in thousands):

	June 30, 2021		December 31, 2020
Cash	$	47,911	$	85,750
Cash equivalents	510,316		510,125
Total cash and cash equivalents	$	558,227	$	595,875
Restricted cash	1,027		665
Total cash, cash equivalents and restricted cash	$	559,254	$	596,540

Restrictions on Cash and Cash Equivalents

Cash, cash equivalents and restricted cash as of June 30, 2021 and December 31, 2020 consisted of the following (in thousands):

	June 30, 2021		December 31, 2020
Cash	$	47,911	$	85,750
Cash equivalents	510,316		510,125
Total cash and cash equivalents	$	558,227	$	595,875
Restricted cash	1,027		665
Total cash, cash equivalents and restricted cash	$	559,254	$	596,540

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FAIR VALUE MEASUREMENTS (Tables)

6 Months Ended

Jun. 30, 2021

Fair Value Disclosures [Abstract]

Schedule of Financial Instruments Measured at Fair Value

The following table represents the fair value of the Company’s financial instruments, including those measured at fair value on a recurring basis, as of June 30, 2021 and December 31, 2020 (in thousands):

	June 30, 2021								December 31, 2020
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds	$	510,316	$	—	$	—	$	510,316	$	510,125	$	—	$	—	$	510,125
Other investments:
Certificates of deposit	—		10,000		—		10,000		—		10,933		—		10,933
Total cash equivalents and other investments	$	510,316	$	10,000	$	—	$	520,316	$	510,125	$	10,933	$	—	$	521,058

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PREPAID EXPENSES AND OTHER CURRENT ASSETS (Tables)

6 Months Ended

Jun. 30, 2021

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Schedule of Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets as of June 30, 2021 and December 31, 2020 consisted of the following (in thousands):

	June 30, 2021		December 31, 2020
Prepaid expenses	$	12,026	$	10,438
Certificates of deposit	10,000		10,930
Other current assets	7,387		7,082
Total prepaid expenses and other current assets	$	29,413	$	28,450

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PROPERTY, EQUIPMENT, AND SOFTWARE, NET (Tables)

6 Months Ended

Jun. 30, 2021

Property, Plant and Equipment [Abstract]

Schedule of Property, Equipment and Software, Net

Property, equipment and software, net as of June 30, 2021 and December 31, 2020 consisted of the following (in thousands):

	June 30, 2021		December 31, 2020
Capitalized website and internal-use software development costs	$	187,418	$	171,831
Leasehold improvements(1)	81,776		88,687
Computer equipment	46,223		46,581
Furniture and fixtures	16,466		18,339
Telecommunication	4,965		4,951
Software	1,718		1,717
Total	338,566		332,106
Less accumulated depreciation	(245,939)		(230,388)
Property, equipment and software, net	$	92,627	$	101,718

(1) The cost basis was reduced to reflect an impairment of $2.7 million recorded during the three months ended June 30, 2021. For more information, see Note 8, "Leases."

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GOODWILL AND INTANGIBLE ASSETS (Tables)

6 Months Ended

Jun. 30, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The changes in carrying amount of goodwill during the six months ended June 30, 2021 were as follows (in thousands):

Balance as of December 31, 2020	$	109,261
Effect of currency translation	(1,631)
Balance as of June 30, 2021	$	107,630

Schedule of Intangible Assets

Intangible assets that were not fully amortized as of June 30, 2021 and December 31, 2020 consisted of the following (dollars in thousands):

	June 30, 2021
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Weighted Average Remaining Life
Business relationships	$	9,918	$	(4,299)	$	5,619	7.4	years
Developed technology	7,709		(6,846)		863		0.7	years
Licensing agreements	6,129		(538)		5,591		8.7	years
Domains and data licenses	2,869		(2,847)		22		2.0	years
Total	$	26,625	$	(14,530)	$	12,095

	December 31, 2020
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Weighted Average Remaining Life
Business relationships	$	9,918	$	(3,814)	$	6,104	7.8	years
Developed technology	7,709		(6,238)		1,471		1.2	years
Licensing agreements	6,129		(215)		5,914		9.2	years
Domain and data licenses	2,869		(2,837)		32		2.2	years
Total	$	26,625	$	(13,104)	$	13,521

Schedule of Future Amortization Expense

As of June 30, 2021, estimated future amortization expenses were as follows (in thousands):

Remainder of 2021	$	1,422
2022	1,676
2023	1,359
2024	1,353
2025	1,353
2026	1,353
Thereafter	3,579
Total amortization	$	12,095

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LEASES (Tables)

6 Months Ended

Jun. 30, 2021

Leases [Abstract]

Lease Cost and Supplemental Cash Flow Information

The components of lease cost, net for the three and six months ended June 30, 2021 and 2020 were as follows (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Operating lease cost	$	12,631	$	13,987	$	26,394	$	27,798
Short-term lease cost (12 months or less)	136		341		273		701
Sublease income	(1,778)		(1,954)		(3,406)		(3,914)
Total lease cost, net	$	10,989	$	12,374	$	23,261	$	24,585

Supplemental cash flow information related to leases for the six months ended June 30, 2021 and 2020 was as follows (in thousands):

	Six Months Ended June 30,
	2021		2020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	27,784	$	29,749

Lessee, Operating Lease, Liability, Maturity

As of June 30, 2021, maturities of lease liabilities were as follows (in thousands):

Remainder of 2021	$	24,602
2022	48,688
2023	45,801
2024	43,028
2025	22,459
2026	7,502
Thereafter	17,075
Total minimum lease payments	209,155
Less imputed interest	(26,849)
Present value of lease liabilities	$	182,306

Assets And Liabilities, Lessee Information

As of June 30, 2021 and December 31, 2020, the weighted-average remaining lease terms and weighted-average discount rates were as follows:

	June 30, 2021	December 31, 2020
Weighted-average remaining lease term (years) — operating leases	4.8	5.1
Weighted-average discount rate — operating leases	5.9 %	6.0	%

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OTHER NON-CURRENT ASSETS (Tables)

6 Months Ended

Jun. 30, 2021

Other Assets, Noncurrent Disclosure [Abstract]

Schedule of Other Non-Current Assets

Other non-current assets as of June 30, 2021 and December 31, 2020 consisted of the following (in thousands):

	June 30, 2021		December 31, 2020
Deferred tax assets	$	39,013	$	31,163
Deferred contract costs	15,413		14,522
Other non-current assets	4,640		3,163
Total other non-current assets	$	59,066	$	48,848

Capitalized Contract Cost

Deferred contract costs as of June 30, 2021 and December 31, 2020, and changes in deferred contract costs during the six months ended June 30, 2021, were as follows (in thousands):

	Six Months Ended June 30, 2021
Balance, beginning of period	$	14,522
Add: costs deferred on new contracts	7,721
Less: amortization recorded in sales and marketing expenses	(6,830)
Balance, end of period	$	15,413

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CONTRACT BALANCES (Tables)

6 Months Ended

Jun. 30, 2021

Revenue from Contract with Customer [Abstract]

Schedule of Allowance for Doubtful Accounts Receivable

The changes in the allowance for doubtful accounts during the six months ended June 30, 2021 and 2020 were as follows (in thousands):

	Six Months Ended June 30,
	2021		2020
Balance, beginning of period	$	11,559	$	7,686
Add: provision for doubtful accounts	7,240		21,897
Less: write-offs, net of recoveries	(9,510)		(17,876)
Balance, end of period	$	9,289	$	11,707

Contract with Customer, Liability

The changes in deferred revenue during the six months ended June 30, 2021 were as follows (in thousands):

	Six Months Ended June 30, 2021
Balance, beginning of period	$	4,109
Less: recognition of deferred revenue from beginning balance	(2,759)
Add: net increase in current period contract liabilities	3,825
Balance, end of period	$	5,175

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ACCOUNTS PAYABLE AND ACCRUED LIABILITIES (Tables)

6 Months Ended

Jun. 30, 2021

Payables and Accruals [Abstract]

Schedule of Accrued Liabilities

Accounts payable and accrued liabilities as of June 30, 2021 and December 31, 2020 consisted of the following (in thousands):

	June 30, 2021		December 31, 2020
Accounts payable	$	14,373	$	8,853
Employee-related liabilities	66,225		57,684
Accrued sales and marketing expenses	8,042		2,137
Accrued cost of revenue	5,381		8,269
Other accrued liabilities	12,169		10,817
Total accounts payable and accrued liabilities	$	106,190	$	87,760

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STOCKHOLDERS' EQUITY (Tables)

6 Months Ended

Jun. 30, 2021

Stockholders' Equity Note [Abstract]

Schedule of Stock by Class

The following table presents the number of shares authorized and issued as of the dates indicated:

	June 30, 2021		December 31, 2020
	Shares Authorized	Shares Issued	Shares Authorized	Shares Issued
Stockholders’ equity:
Common stock, $0.000001 par value	200,000,000	74,589,907	200,000,000	75,371,368
Undesignated preferred stock	10,000,000	—	10,000,000	—

Schedule of Stock Option Activity

A summary of stock option activity for the six months ended June 30, 2021 is as follows:

	Number of Shares	Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Term (in years)	Aggregate Intrinsic Value (in thousands)
Outstanding at December 31, 2020	4,622,828	$	29.89	4.7	$	30,451
Granted	80,000	39.17
Exercised	(564,923)	12.24
Canceled	(29,275)	49.09
Outstanding at June 30, 2021	4,108,630	$	32.36	4.8	$	38,326
Options vested and exercisable at June 30, 2021	3,632,114	$	31.80	4.4	$	36,462

Schedule of RSU Activity

A summary of RSU and PRSU activity for the six months ended June 30, 2021 is as follows:

	Number of Shares	Weighted-Average Grant Date Fair Value
Nonvested at December 31, 2020	9,757,787	$	29.22
Granted	4,909,615	36.10
Vested(1)	(2,337,449)	31.84
Canceled	(1,331,918)	31.62
Nonvested at June 30, 2021	10,998,035	$	31.44

(1) Includes 923,147 shares that vested but were not issued due to net share settlement for payment of employee taxes.

Schedule of Stock-Based Compensation Expense

The following table summarizes the effects of stock-based compensation expense related to stock-based awards in the condensed consolidated statements of operations during the periods presented (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Cost of revenue	$	1,094	$	943	$	2,202	$	1,986
Sales and marketing	8,441		7,302		16,838		14,998
Product development	20,674		16,827		41,427		34,582
General and administrative	10,650		5,513		19,637		10,769
Total stock-based compensation recorded to loss before income taxes	40,859		30,585		80,104		62,335
Benefit from income taxes	(9,501)		(11,652)		(19,566)		(24,209)
Total stock-based compensation recorded to net income (loss)	$	31,358	$	18,933	$	60,538	$	38,126

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OTHER INCOME, NET (Tables)

6 Months Ended

Jun. 30, 2021

Other Income and Expenses [Abstract]

Schedule of Other Income, Net

Other income, net for the three and six months ended June 30, 2021 and 2020 consisted of the following (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Interest (expense) income, net	$	(34)	$	191	$	(51)	$	2,297
Transaction gain (loss) on foreign exchange	11		8		268		(60)
Other non-operating income, net	565		296		1,030		641
Other income, net	$	542	$	495	$	1,247	$	2,878

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NET INCOME (LOSS) PER SHARE (Tables)

6 Months Ended

Jun. 30, 2021

Earnings Per Share [Abstract]

Schedule of Calculation of Basic and Diluted Net Income (Loss) Per Share

The following table presents the calculation of basic and diluted net income (loss) per share for the periods presented (in thousands, except per share data):

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Basic net income (loss) per share:
Net income (loss)	$	4,212	$	(23,990)	$	(1,584)	$	(39,493)
Shares used in computation:
Weighted-average common shares outstanding	74,807		72,413		75,025		71,980
Basic net income (loss) per share attributable to common stockholders	$	0.06	$	(0.33)	$	(0.02)	$	(0.55)

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Diluted net income (loss) per share:
Net income (loss)	$	4,212	$	(23,990)	$	(1,584)	$	(39,493)
Shares used in computation:
Weighted-average common shares outstanding	74,807		72,413		75,025		71,980
Stock options	877		—		—		—
RSUs	3,291		—		—		—
ESPP	8		—		—		—
Number of shares used in diluted calculation	78,983		72,413		75,025		71,980
Diluted net income (loss) per share attributable to common stockholders	$	0.05	$	(0.33)	$	(0.02)	$	(0.55)

Schedule of Anti-dilutive Securities

The following stock-based instruments were excluded from the calculation of diluted net income (loss) per share because their effect would have been anti-dilutive for the periods presented (in thousands):

	Three Months Ended June 30,		Six Months Ended June 30,
	2021	2020	2021	2020
Stock options	1,497	5,947	4,109	5,947
RSUs	145	7,876	10,998	7,876
ESPP	—	48	41	48

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INFORMATION ABOUT REVENUE AND GEOGRAPHIC AREAS (Tables)

6 Months Ended

Jun. 30, 2021

Segment Reporting [Abstract]

Schedule of Revenue by Product Line

The following table presents the Company’s net revenue by major product line (and by category for advertising revenue) for the periods presented (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Net revenue by product:
Advertising revenue by category:
Services	$	152,522	$	109,583	$	293,209	$	242,665
Restaurants, Retail & Other	92,439		52,650		173,739		159,661
Advertising	244,961		162,233		466,948		402,326
Transactions	3,525		3,968		7,329		6,607
Other	8,702		2,829		15,007		9,998
Total net revenue	$	257,188	$	169,030	$	489,284	$	418,931

Schedule of Net Revenue by Geographic Region

The following table presents the Company’s net revenue by major geographic region for the periods presented (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
United States	$	254,954	$	167,270	$	484,949	$	413,797
All other countries	2,234		1,760		4,335		5,134
Total net revenue	$	257,188	$	169,030	$	489,284	$	418,931

Schedule of Long-Lived Assets by Geographic Location

The following table presents the Company’s long-lived assets by major geographic region for the periods presented (in thousands):

	June 30, 2021		December 31, 2020
United States	$	88,688	$	97,548
All other countries	3,939		4,170
Total long-lived assets	$	92,627	$	101,718

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CASH, CASH EQUIVALENTS AND RESTRICTED CASH (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
Cash and Cash Equivalents [Abstract]
Cash	$ 47,911	$ 85,750
Cash equivalents	510,316	510,125
Total cash and cash equivalents	558,227	595,875
Restricted cash	1,027	665
Total cash, cash equivalents and restricted cash	$ 559,254	$ 596,540	$ 526,603	$ 192,318

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FAIR VALUE MEASUREMENTS (Details) - Recurring - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and other investments	$ 520,316	$ 521,058
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and other investments	510,316	510,125
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and other investments	10,000	10,933
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and other investments	0	0
Certificates of deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other investments:	10,000	10,933
Certificates of deposit | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other investments:	0	0
Certificates of deposit | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other investments:	10,000	10,933
Certificates of deposit | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other investments:	0	0
Money market funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents:	510,316	510,125
Money market funds | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents:	510,316	510,125
Money market funds | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents:	0	0
Money market funds | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents:	$ 0	$ 0

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MARKETABLE SECURITIES - Narrative (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Mar. 30, 2020
Statement of Financial Position [Abstract]
Debt securities, available-for-sale, amortized cost		$ 300.2
Proceeds from sale of debt securities, available-for-sale	$ 253.4
Proceeds from maturities reinvested	$ 73.0

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PREPAID EXPENSES AND OTHER CURRENT ASSETS (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Prepaid expenses	$ 12,026	$ 10,438
Certificates of deposit	10,000	10,930
Other current assets	7,387	7,082
Total prepaid expenses and other current assets	$ 29,413	$ 28,450

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PREPAID EXPENSES AND OTHER CURRENT ASSETS (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Prepaid Expenses and Other Current Assets [Line Items]
Amortization expense	$ 0.7	$ 0.6	$ 1.4	$ 1.2
Cloud Computing Implementation Cost
Prepaid Expenses and Other Current Assets [Line Items]
Amortization expense	$ 0.8		$ 0.8

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PROPERTY, EQUIPMENT AND SOFTWARE, NET (Schedule of Property, Equipment and Software) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Property, equipment and software, gross	$ 338,566	$ 332,106
Less accumulated depreciation	(245,939)	(230,388)
Property, equipment and software, net	92,627	101,718
Impairment of leasehold	2,700
Capitalized website and internal-use software development costs
Property, Plant and Equipment [Line Items]
Property, equipment and software, gross	187,418	171,831
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, equipment and software, gross	81,776	88,687
Computer equipment
Property, Plant and Equipment [Line Items]
Property, equipment and software, gross	46,223	46,581
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, equipment and software, gross	16,466	18,339
Telecommunication
Property, Plant and Equipment [Line Items]
Property, equipment and software, gross	4,965	4,951
Software
Property, Plant and Equipment [Line Items]
Property, equipment and software, gross	$ 1,718	$ 1,717

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PROPERTY, EQUIPMENT, AND SOFTWARE, NET (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Property, Plant and Equipment [Abstract]
Depreciation expense	$ 12.1	$ 12.0	$ 24.5	$ 23.7

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GOODWILL AND INTANGIBLE ASSETS (Schedule of Goodwill) (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2021 USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 109,261
Effect of currency translation	(1,631)
Ending balance	$ 107,630

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GOODWILL AND INTANGIBLE ASSETS (Schedule of Intangible Assets) (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 26,625	$ 26,625
Accumulated Amortization	(14,530)	(13,104)
Total amortization	12,095	13,521
Business relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	9,918	9,918
Accumulated Amortization	(4,299)	(3,814)
Total amortization	$ 5,619	$ 6,104
Weighted Average Remaining Life	7 years 4 months 24 days	7 years 9 months 18 days
Developed technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 7,709	$ 7,709
Accumulated Amortization	(6,846)	(6,238)
Total amortization	$ 863	$ 1,471
Weighted Average Remaining Life	8 months 12 days	1 year 2 months 12 days
Licensing agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 6,129	$ 6,129
Accumulated Amortization	(538)	(215)
Total amortization	$ 5,591	$ 5,914
Weighted Average Remaining Life	8 years 8 months 12 days	9 years 2 months 12 days
Domains and data licenses
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 2,869	$ 2,869
Accumulated Amortization	(2,847)	(2,837)
Total amortization	$ 22	$ 32
Weighted Average Remaining Life	2 years	2 years 2 months 12 days

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GOODWILL AND INTANGIBLE ASSETS (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense	$ 0.7	$ 0.6	$ 1.4	$ 1.2

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GOODWILL AND INTANGIBLE ASSETS (Schedule of Future Amortization Expense) (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Year Ending December 31,
Remainder of 2021	$ 1,422
2022	1,676
2023	1,359
2024	1,353
2025	1,353
2026	1,353
Thereafter	3,579
Total amortization	$ 12,095	$ 13,521

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LEASES (Lease Cost) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Leases [Abstract]
Operating lease cost	$ 12,631	$ 13,987	$ 26,394	$ 27,798
Short-term lease cost (12 months or less)	136	341	273	701
Sublease income	(1,778)	(1,954)	(3,406)	(3,914)
Total lease cost, net	$ 10,989	$ 12,374	$ 23,261	$ 24,585

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LEASES (Supplemental Cash Flow Information) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 27,784	$ 29,749

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LEASES (Operating Lease Maturities) (Details) $ in Thousands	Jun. 30, 2021 USD ($)
Leases [Abstract]
Remainder of 2021	$ 24,602
2022	48,688
2023	45,801
2024	43,028
2025	22,459
2026	7,502
Thereafter	17,075
Total minimum lease payments	209,155
Less imputed interest	(26,849)
Present value of lease liabilities	$ 182,306

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LEASES (Additional Information) (Details)	Jun. 30, 2021	Dec. 31, 2020
Leases [Abstract]
Weighted-average remaining lease term (years) — operating leases	4 years 9 months 18 days	5 years 1 month 6 days
Weighted-average discount rate — operating leases	5.90%	6.00%

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LEASES (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2021	Jun. 30, 2020
Leases [Abstract]
Lease not yet commenced	$ 9,700	$ 9,700
Asset impairment	11,200	$ 11,164	$ 0
Reduction to Right-of-use assets	8,500
Reduction to leasehold improvements	$ 2,700

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OTHER NON-CURRENT ASSETS (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Other Assets, Noncurrent Disclosure [Abstract]
Deferred tax assets	$ 39,013	$ 31,163
Deferred contract costs	15,413	14,522
Other non-current assets	4,640	3,163
Total other non-current assets	$ 59,066	$ 48,848

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OTHER NON-CURRENT ASSETS (Changes in Deferred Contract Costs) (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2021 USD ($)
Changes In Capitalized Contract Costs [Roll Forward]
Balance, beginning of period	$ 14,522
Add: costs deferred on new contracts	7,721
Less: amortization recorded in sales and marketing expenses	(6,830)
Balance, end of period	$ 15,413

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CONTRACT BALANCES (Schedule of Changes in Allowance for Doubtful Accounts) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	$ 11,559	$ 7,686
Add: provision for doubtful accounts	7,240	21,897
Less: write-offs, net of recoveries	(9,510)	(17,876)
Balance, end of period	$ 9,289	$ 11,707

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CONTRACT BALANCES (Changes in Deferred Revenue) (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2021 USD ($)
Change in Contract with Customer, Liability [Roll Forward]
Balance, beginning of period	$ 4,109
Less: recognition of deferred revenue from beginning balance	(2,759)
Add: net increase in current period contract liabilities	3,825
Balance, end of period	$ 5,175

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ACCOUNTS PAYABLE AND ACCRUED LIABILITIES (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Payables and Accruals [Abstract]
Accounts payable	$ 14,373	$ 8,853
Employee-related liabilities	66,225	57,684
Accrued sales and marketing expenses	8,042	2,137
Accrued cost of revenue	5,381	8,269
Other accrued liabilities	12,169	10,817
Total accounts payable and accrued liabilities	$ 106,190	$ 87,760

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COMMITMENTS AND CONTINGENCIES (Details) - USD ($)	1 Months Ended
	May 31, 2020	Jun. 30, 2021
Revolving Credit Facility
Line of Credit Facility [Line Items]
Line of credit facility term	3 years
Line of credit facility, maximum borrowing capacity	$ 75,000,000.0
Remaining borrowing capacity		$ 53,500,000
Long-term line of credit		0
Letter of Credit
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	$ 25,000,000.0
Credit Agreement Sublimit
Line of Credit Facility [Line Items]
Letters of credit outstanding		$ 21,500,000

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STOCKHOLDERS' EQUITY (Schedule of Stock by Class) (Details) - $ / shares	Jun. 30, 2021	Dec. 31, 2020
Stockholders’ equity:
Common stock, shares authorized (in shares)	200,000,000	200,000,000
Common stock, shares issued (in shares)	74,589,907	75,371,368
Undesignated preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Undesignated preferred stock, shares issued (in shares)	0	0
Common stock, par value (in USD per share)	$ 0.000001	$ 0.000001

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STOCKHOLDERS' EQUITY (Narrative) (Details) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021 USD ($) $ / shares shares	Jun. 30, 2020 USD ($) $ / shares shares	Jun. 30, 2021 USD ($) schedule $ / shares shares	Jun. 30, 2020 USD ($) $ / shares shares	Jan. 31, 2020 USD ($)	Feb. 28, 2019 USD ($)	Nov. 30, 2018 USD ($)	Jul. 31, 2017 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Repurchase of common stock			$ 114,157	$ 0
Shares retired (in shares) | shares			3,015,135
Treasury shares (in shares) | shares	103,870		103,870
Granted (in shares) | shares			80,000
Number of vesting schedules | schedule			2
Fair value as of vest date of RSUs			$ 88,700	$ 46,100
Number of shares purchased (in shares) | shares		433,697		433,697
Stock-based compensation	$ 40,859	$ 30,585	80,104	$ 62,335
Capitalized stock-based compensation expense	$ 2,800	2,200	$ 5,500	4,500
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Target vesting range	0.00%		0.00%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Target vesting range	200.00%		200.00%
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercisable period			10 years
Intrinsic value of options exercised	$ 700	$ 200	$ 11,800	$ 4,400
Weighted average grant date fair value (in USD per share) | $ / shares	$ 18.55		$ 18.55	$ 11.13
Granted (in shares) | shares		0
Unrecognized compensation costs	$ 7,500		$ 7,500
Unrecognized compensation costs, period for recognition			2 years
Number of vesting schedules | schedule			2
Stock options | End of year one
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rate			25.00%
Stock options | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			4 years
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			4 years
Unrecognized compensation costs	$ 336,600		$ 336,600
Unrecognized compensation costs, period for recognition			2 years 9 months 18 days
RSUs | End of year one
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rate			25.00%
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			4 years
Performance goal stock price at which Performance Restricted Stock Unit awards would vest (usd per share) | $ / shares	$ 45.3125		$ 45.3125
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant date fair value (in USD per share) | $ / shares	$ 34.09	$ 18.48	$ 34.09	$ 18.48
Subscription rate of eligible compensation	15.00%		15.00%
Purchase price, percentage of fair market value			85.00%
Number of shares purchased (in shares) | shares	254,449		254,449
Stock-based compensation	$ 700	$ 500	$ 1,500	$ 1,300
July 2017 Share Repurchase Program
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock repurchase program, authorized amount	950,000		950,000		$ 250,000	$ 250,000	$ 250,000	$ 200,000
Remaining authorized repurchase amount	$ 130,400		$ 130,400
Stock repurchased and retired (in shares) | shares			3,019,987
Repurchase of common stock			$ 114,200
Stock repurchased (in shares) | shares				0

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STOCKHOLDERS' EQUITY (Schedule of Stock Option Activity) (Details) $ / shares in Units, $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2021 USD ($) $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares
Number of Shares
Outstanding, beginning balance (in shares) | shares	4,622,828
Granted (in shares) | shares	80,000
Exercised (in shares) | shares	(564,923)
Canceled (in shares) | shares	(29,275)
Outstanding, ending balance (in shares) | shares	4,108,630	4,622,828
Options vested and exercisable (in shares) | shares	3,632,114
Weighted-Average Exercise Price
Outstanding, beginning balance (in USD per share) | $ / shares	$ 29.89
Granted (in USD per share) | $ / shares	39.17
Exercised (in USD per share) | $ / shares	12.24
Canceled (in USD per share) | $ / shares	49.09
Outstanding, ending balance (in USD per share) | $ / shares	32.36	$ 29.89
Options vested and exercisable (in USD per share) | $ / shares	$ 31.80
Weighted- Average Remaining Contractual Term
Outstanding (in years)	4 years 9 months 18 days	4 years 8 months 12 days
Options vested and exercisable (in years)	4 years 4 months 24 days
Aggregate Intrinsic Value
Outstanding | $	$ 38,326	$ 30,451
Options vested and exercisable | $	$ 36,462

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STOCKHOLDERS' EQUITY (Schedule of Restricted Stock Units Activity) (Details) - RSUs	6 Months Ended
	Jun. 30, 2021 $ / shares shares
Number of Shares
Nonvested, beginning balance (in shares)	9,757,787
Granted (in shares)	4,909,615
Vested (in shares)	(2,337,449)
Canceled (in shares)	(1,331,918)
Nonvested, ending balance (in shares)	10,998,035
Weighted-Average Grant Date Fair Value
Nonvested, beginning balance (in USD per share) | $ / shares	$ 29.22
Granted (in USD per share) | $ / shares	36.10
Released (in USD per share) | $ / shares	31.84
Canceled (in USD per share) | $ / shares	31.62
Nonvested, ending balance (in USD per share) | $ / shares	$ 31.44
Shares withheld for taxes (in shares)	923,147

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STOCKHOLDERS' EQUITY (Schedule of Stock-Based Compensation Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation recorded to loss before income taxes	$ 40,859	$ 30,585	$ 80,104	$ 62,335
Benefit from income taxes	(9,501)	(11,652)	(19,566)	(24,209)
Total stock-based compensation recorded to net income (loss)	31,358	18,933	60,538	38,126
Cost of revenue
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation recorded to loss before income taxes	1,094	943	2,202	1,986
Sales and marketing
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation recorded to loss before income taxes	8,441	7,302	16,838	14,998
Product development
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation recorded to loss before income taxes	20,674	16,827	41,427	34,582
General and administrative
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation recorded to loss before income taxes	$ 10,650	$ 5,513	$ 19,637	$ 10,769

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OTHER INCOME, NET (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Other Income and Expenses [Abstract]
Interest (expense) income, net	$ (34)	$ 191	$ (51)	$ 2,297
Transaction gain (loss) on foreign exchange	11	8	268	(60)
Other non-operating income, net	565	296	1,030	641
Other income, net	$ 542	$ 495	$ 1,247	$ 2,878

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INCOME TAXES - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Tax Disclosure [Abstract]
Benefit from income taxes	$ (4,751)	$ (10,864)	$ (6,893)	$ (20,228)
Income tax provision due to U.S. federal and state income taxes and foreign income taxes			1,500	24,300
Net discrete tax (benefit) expense			(5,400)	$ 4,100
Unrecognized tax benefits	52,400		52,400
Unrecognized tax benefits that would not impact the effective tax rate	22,800		22,800
Earnings of foreign subsidiaries to be reinvested indefinitely	8,000		8,000
Decrease in unrecognized tax benefits is reasonably possible	$ 6,300		$ 6,300

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NET INCOME (LOSS) PER SHARE (Schedule of Basic and Diluted Net Income Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Basic net income (loss) per share:
Net income (loss)	$ 4,212	$ (23,990)	$ (1,584)	$ (39,493)
Weighted-average common shares outstanding (in shares)	74,807	72,413	75,025	71,980
Basic net income (loss) per share attributable to common stockholders (in USD per share)	$ 0.06	$ (0.33)	$ (0.02)	$ (0.55)
Diluted net income (loss) per share:
Net income (loss)	$ 4,212	$ (23,990)	$ (1,584)	$ (39,493)
Weighted-average common shares outstanding (in shares)	74,807	72,413	75,025	71,980
Number of shares used in diluted calculation (in shares)	78,983	72,413	75,025	71,980
Diluted net income (loss) per share attributable to common stockholders (in USD per share)	$ 0.05	$ (0.33)	$ (0.02)	$ (0.55)
Stock options
Diluted net income (loss) per share:
Incremental common shares (in shares)	877	0	0	0
RSUs
Diluted net income (loss) per share:
Incremental common shares (in shares)	3,291	0	0	0
ESPP
Diluted net income (loss) per share:
Incremental common shares (in shares)	8	0	0	0

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NET INCOME (LOSS) PER SHARE (Schedule of Anti-Dilutive Employee Stock Awards) (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive awards (in shares)	1,497	5,947	4,109	5,947
RSUs
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive awards (in shares)	145	7,876	10,998	7,876
ESPP
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive awards (in shares)	0	48	41	48

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INFORMATION ABOUT REVENUE AND GEOGRAPHIC AREAS (Net Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net revenue	$ 257,188	$ 169,030	$ 489,284	$ 418,931
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net revenue	254,954	167,270	484,949	413,797
All other countries
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net revenue	2,234	1,760	4,335	5,134
Services
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net revenue	152,522	109,583	293,209	242,665
Restaurants, Retail & Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net revenue	92,439	52,650	173,739	159,661
Advertising
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net revenue	244,961	162,233	466,948	402,326
Transactions
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net revenue	3,525	3,968	7,329	6,607
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net revenue	$ 8,702	$ 2,829	$ 15,007	$ 9,998

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INFORMATION ABOUT REVENUE AND GEOGRAPHIC AREAS - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Statement [Abstract]
Customer incentives	$ 0.7	$ 13.3	$ 2.9	$ 17.9
Free advertising for customers		$ 14.5

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INFORMATION ABOUT REVENUE AND GEOGRAPHIC AREAS (Long-Lived Assets) (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 92,627	$ 101,718
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	88,688	97,548
All other countries
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 3,939	$ 4,170

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RESTRUCTURING (Details) $ in Thousands	1 Months Ended		3 Months Ended		6 Months Ended
	Jul. 31, 2020 employee	Apr. 30, 2020 employee	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)
Restructuring and Related Activities [Abstract]
Number of positions eliminated	60	1,000
Number of positions furloughed		1,100
Restructuring | $			$ 12	$ 3,312	$ 32	$ 3,312

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SUBSEQUENT EVENTS (Details) - Subsequent Event - July2021 Share Repurchase Program	1 Months Ended
	Aug. 03, 2021 USD ($)
Subsequent Event [Line Items]
Stock repurchase program, additional authorized amount	$ 250,000,000.0
Stock repurchase program, authorized amount	1,200,000,000
Stock repurchased amount	35,800,000
Remaining authorized repurchase amount	$ 344,600,000

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Label	Element	Value
Accounting Standards Update [Extensible Enumeration]	us-gaap_AccountingStandardsUpdateExtensibleList	Accounting Standards Update 2016-13 [Member]