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 001-32887 

VONAGE HOLDINGS CORP.

(Exact name of registrant as specified in its charter)

Delaware					11-3547680
(State or other jurisdiction of incorporation or organization)					(IRS Employer Identification No.)
23 Main Street	Holmdel	,	NJ	,	07733
(Address of principal executive offices)					(Zip Code)

Registrant’s telephone number, including area code: (732) 528-2600

(Former name, former address and former fiscal year, if changed since last report): Not Applicable

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 $0.001	VG	Nasdaq Global Select Market

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

Indicate by check mark whether the registrant has submitted electronically 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  x    No  o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, 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	x	Accelerated filer	o
Non-accelerated filer	o
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  x

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date.

Class	Outstanding at		July 30, 2021
Common Stock, par value $0.001		251,854,581		shares

VONAGE HOLDINGS CORP.

INDEX

Part 1 - Financial Information
		Page
Item 1.	Condensed Consolidated Financial Statements and Notes	4
	Condensed Consolidated Balance Sheets as of June 30, 2021 and December 31, 2020	4
	Condensed Consolidated Statements of Operations for the Three and Six Months Ended June 30, 2021 and 2020	5
	Condensed Consolidated Statements of Comprehensive Income / (Loss) for the Three and Six Months Ended June 30, 2021 and 2020	6
	Condensed Consolidated Statements of Cash Flows for the Six Months Ended June 30, 2021 and 2020	7
	Condensed Consolidated Statements of Stockholders’ Equity for the Three and Six Months Ended June 30, 2021 and 2020	8
	Notes to Unaudited Condensed Consolidated Financial Statements	10
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	26
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	43
Item 4	Controls and Procedures	43
Part II. Other Information
Item 1.	Legal Proceedings	44
Item 1A.	Risk Factors	44
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	44
Item 3.	Defaults Upon Senior Securities	44
Item 4.	Mine Safety Disclosures	44
Item 5.	Other Information	44
Item 6.	Exhibits	44
	Signature	45

Financial Information Presentation

For the financial information discussed in this Quarterly Report on Form 10-Q, other than per share and per line amounts, dollar amounts are presented in thousands, except where noted.

2

GLOSSARY OF TERMS

When the following terms and abbreviations appear in the text of this report, they have the meanings indicated below:

2018 Credit Facility	$100 million senior secured term loan and $500 million revolving facility due 2023
Convertible Senior Notes	$345 million aggregate principal amount of 1.75% convertible notes due 2024
API	Application Program Interfaces
ASC	The FASB Accounting Standards Codification, which the FASB established as the source of authoritative GAAP
ASU	Accounting Standards Updates - updates to the ASC
CCaaS	Contact Center as a Service
CPaaS	Communications Platform as a Service
CRM	Customer Relationship Management
Exchange Act	The Securities Exchange Act of 1934, as amended
EPS	Earnings Per Share
FASB	Financial Accounting Standards Board
FCC	Federal Communications Commission
IP	Internet Protocol
LIBOR	London Inter-Bank Offered Rate
MPLS	Multi-Protocol Label Switching
NOLs	Net Operating Losses
SaaS	Software as a Service
SAB	Staff Accounting Bulletin
SD-WAN	Software-Defined Wide Area Network
SEC	U.S. Securities and Exchange Commission
SIP	Session Initiation Protocol
SMB	Small to medium-sized business
UCaaS	Unified Communications as a Service
USF	Federal Universal Service Fund
VCP	Vonage Communications Platform
VoIP	Voice over Internet Protocol

3

PART 1 - FINANCIAL INFORMATION

ITEM 1 - CONDENSED CONSOLIDATED FINANCIAL STATEMENTS AND NOTES

VONAGE HOLDINGS CORP.

CONDENSED CONSOLIDATED BALANCE SHEETS

(In thousands, except par value) 

	June 30, 2021		December 31, 2020
Assets	(Unaudited)
Current assets:
Cash and cash equivalents	$	39,977	$	43,078
Accounts receivable, net of allowance of $6,894 and $8,878, respectively	124,426		116,304
Deferred customer acquisition costs, current portion	20,631		18,161
Prepaid expenses	34,081		32,131
Other current assets	3,969		6,230
Total current assets	223,084		215,904
Property and equipment, net of accumulated depreciation of $123,290 and $117,761, respectively	28,244		31,621
Operating lease right-of-use assets	34,320		29,330
Goodwill	622,423		624,328
Software, net of accumulated amortization of $124,190 and $111,642, respectively	94,515		80,638
Deferred customer acquisition costs	70,719		67,529
Restricted cash	2,097		1,919
Intangible assets, net of accumulated amortization of $295,727 and $275,346, respectively	182,993		204,267
Deferred tax assets	104,752		106,374
Other assets	34,481		33,926
Total assets	$	1,397,628	$	1,395,836
Liabilities and Stockholders’ Equity
Current liabilities:
Accounts payable	$	40,857	$	17,464
Accrued expenses	158,076		158,080
Deferred revenue, current portion	61,721		65,506
Operating lease liabilities, current portion	10,286		11,554
Total current liabilities	270,940		252,604
Indebtedness under revolving credit facility	170,500		215,500
Convertible senior notes, net	298,060		290,784
Operating lease liabilities	36,692		31,019
Other liabilities	3,379		3,155
Total liabilities	779,571		793,062
Commitments and Contingencies (Note 9)
Stockholders’ Equity:
Common stock, par value 0.001 per share; 596,950 shares authorized at June 30, 2021, and December 31, 2020	328		324
Additional paid-in capital	1,588,222		1,554,574
Accumulated deficit	(667,535)		(667,221)
Treasury stock, at cost	(339,024)		(320,891)
Accumulated other comprehensive income	36,066		35,988
Total stockholders’ equity	618,057		602,774
Total liabilities and stockholders’ equity	$	1,397,628	$	1,395,836

See accompanying notes to condensed consolidated financial statements.

4

VONAGE HOLDINGS CORP.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(In thousands, except per share amounts)

(Unaudited)

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2021		2020		2021		2020
Revenues:
Service, access and product revenues	$	332,559	$	296,516	$	647,352	$	579,593
USF revenues	18,910		14,017		37,017		28,397
Total revenues	351,469		310,533		684,369		607,990
Operating Expenses:
Service, access and product cost of revenues (excluding depreciation and amortization)	149,887		119,971		288,567		233,009
USF cost of revenues	18,910		14,017		37,017		28,397
Sales and marketing	86,215		90,827		167,689		176,448
Engineering and development	22,710		19,784		43,070		38,987
General and administrative	43,301		42,820		88,234		83,702
Depreciation and amortization	22,284		20,692		42,701		41,177
Total operating expenses	343,307		308,111		667,278		601,720
Income from operations	8,162		2,422		17,091		6,270
Other Income (Expense):
Interest expense	(7,081)		(9,321)		(14,379)		(17,403)
Other income (expense), net	(288)		(38)		(114)		191
Total other expense, net	(7,369)		(9,359)		(14,493)		(17,212)
Income (Loss) before income tax benefit	793		(6,937)		2,598		(10,942)
Income tax expense	(731)		(1,493)		(2,912)		(1,243)
Net income (loss)	$	62	$	(8,430)	$	(314)	$	(12,185)
Income (Loss) per common share:
Basic	$	—	$	(0.03)	$	—	$	(0.05)
Diluted	$	—	$	(0.03)	$	—	$	(0.05)
Weighted-average common shares outstanding:
Basic	251,430		245,385		250,539		244,506
Diluted	259,962		245,385		250,539		244,506

See accompanying notes to condensed consolidated financial statements.

5

VONAGE HOLDINGS CORP.

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME / (LOSS)

(In thousands)

(Unaudited)

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2021		2020		2021		2020
Net income (loss)	$	62	$	(8,430)	$	(314)	$	(12,185)
Other comprehensive income (loss):
Foreign currency translation adjustment, net of tax expense (benefit) of $(462), $281, $831, and $(189), respectively	3,024		4,069		78		(19,558)
Unrealized loss on derivatives, net of tax expense (benefit) of $—, $46, —, and $(4), respectively	—		1,419		—		1,001
Total other comprehensive income (loss)	3,024		5,488		78		(18,557)
Comprehensive income (loss)	$	3,086	$	(2,942)	$	(236)	$	(30,742)

See accompanying notes to condensed consolidated financial statements.

6

VONAGE HOLDINGS CORP.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(In thousands)

(Unaudited) 

	Six Months Ended
	June 30,
	2021		2020
Cash flows from operating activities:
Net loss	$	(314)	$	(12,185)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	21,098		12,967
Amortization of intangibles	21,603		28,210
Deferred income taxes	2,447		(1,952)
Amortization of deferred customer acquisition costs	9,808		7,567
Allowances for doubtful accounts	839		3,509
Amortization of financing costs and debt discount	7,682		7,367
(Gain) loss on disposal of property and equipment	(8)		740
Share-based expense	30,328		22,442
Changes in derivatives	—		1,055
Changes in operating assets and liabilities:
Accounts receivable	(10,920)		(16,927)
Prepaid expenses and other current assets	366		1,413
Deferred customer acquisition costs	(15,425)		(15,389)
Accounts payable and accrued expenses	26,758		(4,318)
Deferred revenue	(3,407)		6,533
Other assets - deferred cloud computing implementation costs	(1,946)		(3,013)
Other assets and liabilities	612		784
Net cash provided by operating activities	89,521		38,803
Cash flows used in investing activities:
Capital expenditures	(4,724)		(4,855)
Purchase of intangible assets	(113)		(190)
Acquisition and development of software assets	(24,379)		(20,199)
Net cash used in investing activities	(29,216)		(25,244)
Cash flows provided by (used in) financing activities:
Payments for short and long-term debt	(45,000)		(50,000)
Proceeds from issuance of long-term debt	—		75,000
Employee taxes paid on withholding shares	(18,133)		(13,179)
Proceeds from exercise of stock options	892		243
Net cash (used in) provided by financing activities	(62,241)		12,064
Effect of exchange rate changes on cash	(987)		(1,647)
Net (decrease) increase in cash, cash equivalents, and restricted cash	(2,923)		23,976
Cash, cash equivalents, and restricted cash, beginning of period	44,997		25,635
Cash, cash equivalents, and restricted cash, end of period	$	42,074	$	49,611
Supplemental disclosures of cash flow information:
Cash paid (received) during the periods for:
Interest	$	6,661	$	8,856
Income taxes	$	(1,677)	$	(2,766)
Non-cash investing activities:
Acquisition of long-term assets included in accounts payable and accrued expenses	$	2,526	$	1,980
Share-based compensation capitalized in internally developed software costs	$	2,432	$	1,905

See accompanying notes to condensed consolidated financial statements.

7

VONAGE HOLDINGS CORP.

CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS’ EQUITY

(In thousands)

(Unaudited)

	Common Stock		Additional Paid-in Capital		Accumulated Deficit		Treasury Stock		Accumulated Other Comprehensive Income		Total
Balance at March 31, 2020	$	320	$	1,506,664	$	(634,764)	$	(318,791)	$	(14,716)	$	538,713
Stock option exercises			88								88
Share-based expense			12,303								12,303
Employee taxes paid on   withholding shares							(523)				(523)
Foreign currency translation   adjustment									4,069		4,069
Unrealized gain on derivatives									1,419		1,419
Net loss					(8,430)						(8,430)
Balance at June 30, 2020	$	320	$	1,519,055	$	(643,194)	$	(319,314)	$	(9,228)	$	547,639
	Common Stock		Additional Paid-in Capital		Accumulated Deficit		Treasury Stock		Accumulated Other Comprehensive Income		Total
Balance at March 31, 2021	$	327	$	1,571,025	$	(667,597)	$	(337,532)	$	33,042	$	599,265
Stock option exercises	1		269								270
Share-based expense			16,928								16,928
Employee taxes paid on withholding   shares							(1,492)				(1,492)
Foreign currency translation   adjustment									3,024		3,024
Net income					62						62
Balance at June 30, 2021	$	328	$	1,588,222	$	(667,535)	$	(339,024)	$	36,066	$	618,057
See accompanying notes to condensed consolidated financial statements.

8

VONAGE HOLDINGS CORP.
CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY
(In thousands)
(Unaudited)
	Common Stock		Additional Paid-in Capital		Accumulated Deficit		Treasury Stock		Accumulated Other Comprehensive Income		Total
Balance at December 31, 2019	$	316	$	1,494,469	$	(631,009)	$	(306,043)	$	9,329	$	567,062
Stock option exercises	4		239								243
Share-based expense			24,347								24,347
Employee taxes paid on   withholding shares							(13,271)				(13,271)
Foreign currency translation   adjustment									(19,558)		(19,558)
Unrealized gain on derivatives									1,001		1,001
Net loss					(12,185)						(12,185)
Balance at June 30, 2020	$	320	$	1,519,055	$	(643,194)	$	(319,314)	$	(9,228)	$	547,639
	Common Stock		Additional Paid-in Capital		Accumulated Deficit		Treasury Stock		Accumulated Other Comprehensive Income		Total
Balance at December 31, 2020	$	324	$	1,554,574	$	(667,221)	$	(320,891)	$	35,988	$	602,774
Stock option exercises	4		888								892
Share-based expense			32,760								32,760
Employee taxes paid on withholding   shares							(18,133)				(18,133)
Foreign currency translation   adjustment									78		78
Net loss					(314)						(314)
Balance at June 30, 2021	$	328	$	1,588,222	$	(667,535)	$	(339,024)	$	36,066	$	618,057

See accompanying notes to condensed consolidated financial statements.

9

VONAGE HOLDINGS CORP.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(In thousands, except per share amounts)

(Unaudited)

Note 1.    Nature of Business

Nature of Operations

Vonage Holdings Corp. (“Vonage”, “Company”, “we”, “our”, “us”) is incorporated as a Delaware corporation. At Vonage, our vision is to accelerate the world's ability to connect. We are observing a secular change in the way business is done, with a fundamental shift in how communications technologies are being leveraged in almost every industry. Through the Vonage Communications Platform, our strategy is to deliver a single leading cloud communications platform that powers our customers' and partners' global engagement solutions using our APIs, Unified Communications, and Contact Center innovations. We believe that the Vonage Communications Platform's products and services are well positioned to take advantage of emerging trends with sizable, growing total addressable markets as companies look to cloud-based communications solutions and API programming architectures as part of their digital transformation.

Our strategic business is the Vonage Communications Platform which delivers a single leading cloud communications platform that powers our customers' and partners' global engagement solutions using our APIs, Unified Communications, and Contact Center innovations. The Vonage Communications Platform brings unique value to businesses by providing multiple communications channels - including video, voice, messaging, email, verification, and artificial intelligence - that integrate into the applications, products and workflows that our customers are already using. We believe this delivers both the power and the flexibility to our customers to address the growing need to transform their communications, connections and experiences for customers and enables the type of business continuity, remote work, and remote delivery of services that are now essential for team members.

For our Consumer customers, we enable users to access and utilize our services and features, via their existing internet connections, including over 3G/4G, LTE, Cable, or DSL broadband networks. This technology enables us to offer our Consumer customers attractively priced voice and messaging services and other features around the world on a variety of devices. Our Consumer strategy is focused on the continued penetration of our core North American markets, which provide value in international long distance and target under-served segments.

Customers in the United States represented 64% and 68% of our consolidated revenues for the three months ended June 30, 2021 and 2020 65% and 69% for the six months ended June 30, 2021 and 2020, respectively, with the balance in Canada, the United Kingdom, China, Singapore, Netherlands, and other countries around the world.

Unaudited Interim Financial Information

The accompanying unaudited interim condensed consolidated financial statements and information have been prepared in accordance with accounting principles generally accepted in the United States and in accordance with the SEC's regulations for interim financial information and with the instructions for Form 10-Q. Accordingly, they do not include all of the information and disclosures required by accounting principles generally accepted in the United States for complete financial statements. In the opinion of management, these financial statements contain all normal and recurring adjustments considered necessary to present fairly the Company's financial position, results of operations, comprehensive income, cash flows, and stockholders’ equity for the periods presented. The results for the six months ended June 30, 2021 are not necessarily indicative of the results to be expected for the full year.

These unaudited interim condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and related notes included in our Annual Report on Form 10-K for the year ended December 31, 2020 filed with the Securities and Exchange Commission on February 19, 2021.

Use of Estimates

Our condensed consolidated financial statements and notes thereof are prepared in conformity with accounting principles generally accepted in the United States, which require management to make estimates and assumptions that affect the amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates, including uncertainty in the economic environment due to the ongoing outbreak of the novel coronavirus COVID-19.

10

VONAGE HOLDINGS CORP.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(In thousands, except per share amounts)

(Unaudited)

We base our estimates on historical experience, available market information, appropriate valuation methodologies, and on various other assumptions that we believe to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities. Estimates are used for such items as depreciable lives for long-lived assets including intangible assets, tax provisions, uncollectible accounts, and assets and liabilities assumed in business combinations, among others. In addition, estimates are used to test long-lived assets and goodwill for impairment.

COVID-19 has created and may continue to create uncertainty in customer payments, reduced usage, and issuance of customer credits to distressed customers served by certain product lines. As of the date of our condensed consolidated financial statements, we are not aware of any specific event or circumstance that would require us to materially update our estimates or judgments. However, these estimates may change as new events occur and additional information is obtained, which may result in changes being recognized in our condensed consolidated financial statements in future periods. In particular and in light of the COVID-19 pandemic, the assumptions and estimates associated with collectability assessment of revenue and credit losses of accounts receivable may have a material impact our consolidated financial statements in future periods, depending on the continued duration or degree of the impact of the COVID-19 pandemic on the global economy.

Reclassifications

Reclassifications have been made to our condensed consolidated financial statements for the prior year periods to conform to classifications used in the current year periods. The reclassifications did not affect results of operations, net assets or cash flows.

Note 2.    Summary of Significant Accounting Policies

This footnote should be read in conjunction with the complete description of our significant accounting policies under Note 2, Summary of Significant Accounting Policies to the consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2020.

Service, Access, and Product Cost of Revenues

Service, access, and product cost of revenues excludes depreciation and amortization expense of $15,515 and $11,148 for the three months ended June 30, 2021 and 2020 and $29,162 and $22,304 for the six months ended June 30, 2021 and 2020, respectively. In addition, costs of goods sold included service, access, and product cost of revenues during the three months ended June 30, 2021 and 2020 were $4,306 and $2,419 and during the six months ended June 30, 2021 and 2020 were $6,885 and $6,095, respectively.

Sales and Marketing Expenses

We incurred advertising costs, which are included in sales and marketing of $12,809 and $14,290 for the three months ended June 30, 2021 and 2020 and $22,466 and $23,750 for the six months ended June 30, 2021 and 2020, respectively.

Fair Value of Financial Instruments

Certain of the Company's other financial instruments, which include cash and cash equivalents, restricted cash, accounts receivable and accounts payable, approximate fair value due to their short-term nature and as such are classified as Level 1. We believe the fair value of our 2018 Credit Facility at June 30, 2021 and December 31, 2020 was approximately the same as its carrying amount as the facility bears interest at a variable rate indexed to current market conditions and is classified as Level 2 within the fair value hierarchy.

As of June 30, 2021 and December 31, 2020, the fair value of the 1.75% convertible senior notes due 2024 (the “Convertible Senior Notes”) was approximately $385,538 and $373,373, respectively. The fair value was determined based on the quoted price for the Convertible Senior Notes in an inactive market on the last trading day of the reporting period and is classified as Level 2 in the fair value hierarchy.

11

VONAGE HOLDINGS CORP.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(In thousands, except per share amounts)

(Unaudited)

We account for financial assets using a framework that establishes a hierarchy that ranks the quality and reliability of the inputs, or assumptions, we use in the determination of fair value, and we classify financial assets and liabilities carried at fair value in one of the following three categories:

•Level 1 - quoted prices (unadjusted) in active markets that are accessible at the measurement date for identical assets and liabilities. The fair value hierarchy gives the highest priority to Level 1 inputs.

•Level 2 - observable prices that are based on inputs not quoted on active markets but corroborated by market data; and

•Level 3 - unobservable inputs when there is little or no market data available, thereby requiring an entity to develop its own assumptions. The fair value hierarchy gives the lowest priority to Level 3 inputs.

Supplemental Balance Sheet Information

The following table provides a reconciliation of cash and cash equivalents and restricted cash reported within the consolidated balance sheets to amounts included in the consolidated statements of cash flows:

	As of June 30,				As of December 31,
	2021		2020		2020		2019
Cash and cash equivalents	$	39,977	$	47,565	$	43,078	$	23,620
Restricted cash	2,097		2,046		1,919		2,015
Total cash, cash equivalents and restricted cash	$	42,074	$	49,611	$	44,997	$	25,635

The following tables provides supplemental information of intangible assets and accrued expenses within the consolidated balance sheets:

Intangible assets, net

	June 30, 2021						December 31, 2020
	Gross Carrying Value		Accumulated Amortization		Net Carrying Value		Gross Carrying Value		Accumulated Amortization		Net Carrying Value
Customer relationships	$	283,102	$	(160,231)	$	122,871	$	284,692	$	(150,094)	$	134,598
Developed technology	174,132		(114,663)		59,469		173,572		(104,468)		69,104
Patents and patent licenses	20,967		(20,314)		653		20,849		(20,284)		565
Trade names	519		(519)		—		500		(500)		—
Total intangible assets	$	478,720	$	(295,727)	$	182,993	$	479,613	$	(275,346)	$	204,267

12

VONAGE HOLDINGS CORP.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(In thousands, except per share amounts)

(Unaudited)

Accrued expenses

	June 30, 2021		December 31, 2020
Compensation and related taxes and temporary labor	$	42,052	$	43,580
Marketing	20,499		15,319
Taxes and fees	24,313		25,977
Telecommunications	55,165		52,975
Severance	671		3,594
Interest	857		847
Customer credits	3,273		4,738
Professional fees	3,003		1,953
Inventory	1,104		659
Other accruals	7,139		8,438
Accrued expenses	$	158,076	$	158,080

In the second half of 2020, the Company initiated a business-wide optimization and alignment project to focus the Company's resources and drive stronger operational execution. In connection with this project, the Company incurred severance costs of $2,655 during the six months ended June 30, 2021, related to further employee exits, which was included in general and administrative expense.

Goodwill

The Company's goodwill is derived primarily from the acquisitions of Vocalocity, Telesphere, iCore, Simple Signal, Nexmo, TokBox, and NewVoiceMedia which are included in the Company's Vonage Communications Platform segment. The following table provides a summary of the changes in the carrying amounts of goodwill:

Balance at December 31, 2020	$	624,328
Foreign currency translation adjustment	(1,905)
Balance at June 30, 2021	$	622,423

Recent Accounting Pronouncements

In August 2020, the FASB issued ASU 2020-06, "Debt - Debt with Conversion Options (Subtopic 470-20) and Derivatives and Hedging - Contracts in Entity's Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity's Own Equity". This ASU simplifies the accounting for certain convertible instruments such that the embedded conversion features are no longer separated from the host contract for convertible instruments with conversion features that are not required to be accounted for as derivatives under ASC 815, or that do not result in substantial premiums accounted for as paid-in-capital. As a result, more convertible debt instruments will be accounted for as a single liability measured at its amortized cost. In addition, the ASU requires the use of the if-converted method to be applied to convertible instruments when calculating earnings per share. The ASU is effective for fiscal years beginning after December 15, 2021, including interim periods within those fiscal years, using either a modified retrospective or a full retrospective approach. Early adoption is permitted for fiscal years beginning after December 15, 2020. The Company is currently evaluating the impact of this standard on our consolidated financial statements.

13

VONAGE HOLDINGS CORP.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(In thousands, except per share amounts)

(Unaudited)

Note 3.  Revenue Recognition

The Company recognizes revenue in accordance with ASC Topic 606, Revenue from Contracts with Customers which is further described in Note 2, Summary of Significant Accounting Policies and Note 3, Revenue Recognition to the consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2020.

Disaggregation of Revenue

The following tables detail our revenue from customers disaggregated by primary geographical market and source of revenue. The tables also include a reconciliation of the disaggregated revenue for our Vonage Communications Platform, or VCP, and Consumer segments.

	Three Months Ended						Three Months Ended
	June 30, 2021						June 30, 2020
	VCP		Consumer		Total		VCP		Consumer		Total
Primary geographical markets
Americas	$	155,524	$	72,588	$	228,112	$	136,346	$	81,859	$	218,205
EMEA	68,526		2,468		70,994		53,051		2,425		55,476
APAC	52,363		—		52,363		36,852		—		36,852
	$	276,413	$	75,056	$	351,469	$	226,249	$	84,284	$	310,533
Major Sources of Revenue
Service revenues	$	260,452	$	63,289	$	323,741	$	212,310	$	75,045	$	287,355
Access and product revenues	8,765		53		8,818		9,109		52		9,161
USF revenues	7,196		11,714		18,910		4,830		9,187		14,017
	$	276,413	$	75,056	$	351,469	$	226,249	$	84,284	$	310,533
	Six Months Ended						Six Months Ended
	June 30, 2021						June 30, 2020
	VCP		Consumer		Total		VCP		Consumer		Total
Primary geographical markets
Americas	$	305,596	$	147,520	$	453,116	$	265,725	$	166,432	$	432,157
EMEA	131,361		4,982		136,343		102,268		5,056		$	107,324
APAC	94,910		—		94,910		68,509		—		$	68,509
	$	531,867	$	152,502	$	684,369	$	436,502	$	171,488	$	607,990
Major Sources of Revenue
Service revenues	$	500,894	$	128,986	$	629,880	$	407,959	$	152,288	$	560,247
Access and product revenues	17,363		109		17,472		19,231		115		19,346
USF revenues	13,610		23,407		37,017		9,312		19,085		28,397
	$	531,867	$	152,502	$	684,369	$	436,502	$	171,488	$	607,990

In addition, the Company recognizes service revenues from its customers through subscription services provided or through usage or pay-per-use type arrangements. During the three and six months ended June 30, 2021, the Company recognized $149,237 and $299,690 related to subscription services, $149,996 and $283,648 related to usage, and $52,236 and $101,031 related to other revenues such as USF, other regulatory fees, and credits. During the three and six months ended June 30, 2020, the Company recognized $154,127 and $310,582 related to subscription services, $111,379 and $204,426 related to usage, and $45,027 and $92,982 related to other revenues such as USF, other regulatory fees, and credits.

14

VONAGE HOLDINGS CORP.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(In thousands, except per share amounts)

(Unaudited)

Contract Assets and Liabilities

The following table provides information about receivables and contract liabilities from contracts with customers:

	June 30, 2021		December 31, 2020
Receivables (1)	$	124,426	$	116,304
Contract liabilities (2)	61,721		65,506

(1) Amounts included in accounts receivables on our condensed consolidated balance sheets.

(2) Amounts included in deferred revenues on our condensed consolidated balance sheet.

Our deferred revenue represents the advance consideration received from customers for subscription services and is predominantly recognized over the following month as transfer of control occurs. During the three and six months ended June 30, 2021, the Company recognized revenue of $105,659 and $211,696, respectively. During the three and six months ended June 30, 2020, the Company recognized revenue of $109,511 and $218,386, respectively, related to its contract liabilities. We expect to recognize $61,721 into revenue over the next twelve months related to our deferred revenue as of June 30, 2021.

Remaining Performance Obligation

Transaction price allocated to the remaining performance obligation represents contracted revenue that has not yet been recognized. The typical subscription term may range from 1 month to 3 years. Contracted revenue as of June 30, 2021 that has not yet been recognized was approximately $0.4 billion. This excludes contracts with an original expected length of less than one year. The Company expects to recognize the majority of its remaining performance obligation over the next 18 months.

Contract Acquisition Costs

We have various commission programs for internal sales personnel and channel partners that are incremental to the acquisition of customer contracts. These costs are recorded as deferred contract acquisition costs on the consolidated balance sheets which eligible employees and third parties may earn a commission on sales of services and products to customers. We expect that these commission fees are recoverable and, therefore, we have capitalized $91,350 and $85,690 as contract costs, net of accumulated amortization, as of June 30, 2021 and December 31, 2020, respectively, included within deferred customer acquisitions costs, current portion and deferred customer acquisition costs on our condensed consolidated balance sheets. Capitalized commission fees are amortized to sales and marketing expense over estimated customer life, which is 7 years for Vonage Communications Platform customers. The amounts amortized to sales and marketing expense were $5,046 and $9,808 for the three and six months ended June 30, 2021and $3,906 and $7,567 for the three and six months ended June 30, 2020, respectively. There were no impairment losses recognized in relation to the costs capitalized during the six months ended June 30, 2021 and 2020. In addition, the Company expenses sales commissions for commission plans related to customer arrangements deemed less than a year and for residuals and renewals.

15

VONAGE HOLDINGS CORP.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(In thousands, except per share amounts)

(Unaudited)

Note 4.    Earnings Per Share

The following table sets forth the computation for basic and diluted loss per share for the three and six months ended June 30, 2021 and 2020:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2021		2020		2021		2020
Numerator
Net income (loss)	$	62	$	(8,430)	$	(314)	$	(12,185)
Denominator
Weighted average common shares outstanding for basic and diluted net loss per share	251,430		245,385		250,539		244,506
Dilutive effect of stock options and restricted stock units	8,532		—		—		—
Diluted weighted average common shares outstanding	259,962		245,385		250,539		244,506
Basic income (loss) per share
Basic income (loss) per share	$	—	$	(0.03)	$	—	$	(0.05)
Diluted income (loss) per share
Diluted income (loss) per share	$	—	$	(0.03)	$	—	$	(0.05)

For the three and six months ended June 30, 2021 and 2020, the following were excluded from the calculation of diluted loss per common share because of their anti-dilutive effects: 

	Three Months Ended		Six Months Ended
	June 30,		June 30,
	2021	2020	2021	2020
Restricted stock units	7,456	12,409	15,129	12,409
Stock options	449	4,777	1,308	4,777
	7,905	17,186	16,437	17,186

As the Company expects to settle the principal amount of its outstanding convertible senior notes in cash and any excess in cash or shares of the Company’s common stock, the Company uses the treasury stock method for calculating any potential dilutive effect of the conversion spread on diluted net income per share, if applicable. The conversion spread will have a dilutive impact on diluted net income per share of common stock when the average market price of the Company’s common stock for a given period exceeds the conversion price of $16.72 per share. The Company's Convertible Senior Notes are further described in Note 6, Long-Term Debt.

16

VONAGE HOLDINGS CORP.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(In thousands, except per share amounts)

(Unaudited)

Note 5. Income Taxes

The income tax consisted of the following:

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2021			2020			2021			2020
Income (loss) before income taxes	$	793		$	(6,937)		$	2,598		$	(10,942)
Income tax expense	(731)			(1,493)			(2,912)			(1,243)
Effective tax rate	92.2		%	21.5		%	112.1		%	11.4		%

Generally, provisions for income taxes during interim reporting periods apply an estimate of the annual effective tax rate for the full year. The provision for income taxes will vary with levels of pre-tax income (loss) and non-deductible expenses, NOL valuation allowances and other permanent non-deductible charges which can cause the rate to fluctuate from quarter to quarter. An alternative approach may be recorded under a discrete method which applies actual adjustments for the period including specific permanent adjustments and geographic distribution of our pre-tax income (loss). The discrete method was determined to be the appropriate method for calculating the interim tax provision as using the estimated annual effective tax rate method would have produced an unreliable rate stemming from an estimated annual marginal loss and large permanent adjustments.

During the current quarter, the UK government enacted a tax rate increase from 19% to 25% effective April 1, 2023. As such, the Company has updated its deferred tax asset to reflect the increase in rate and recorded a benefit of $253 during the three months ended June 30, 2021.

For the three and six months ended June 30, 2021, our effective tax rate was different than the statutory rate primarily due to an increase in permanent items related to limitations on executive compensation, the inclusion of foreign income in the U.S. due to foreign disregarded entities, and limitation on foreign losses.

For the three and six months ended June 30, 2020, our effective tax rate was different than the statutory rate primarily due to a discrete period tax benefit of $2,019 during the first half of the year which was recognized related to excess tax benefits on equity compensation. In addition, the Company’s actual effective tax rate for the current year has been impacted due to limitations on executive compensation and inclusion of income in the U.S. due to foreign disregarded entities compared to the overall pretax loss for the quarter.

Uncertain Tax Positions

The Company had uncertain tax benefits of $778 and $632 as of June 30, 2021 and December 31, 2020, respectively. The Company recognizes interest and penalties related to uncertain tax benefits in income tax expense. The Company incurred interest expense and penalties of $65 and $67 during the three and six months ended June 30, 2021. The Company did not incur any interest and penalties during both the three and six months ended June 30, 2020, respectively. The following table reconciles the total amounts of uncertain tax benefits:

	June 30, 2021		December 31, 2020
Balance as of January 1	$	632	$	914
Increase due to current year positions	375		114
Increase due to prior year positions	6		—
Decrease due to settlements and payments	(241)		(173)
Decrease due to lapse of applicable statute of limitations	—		(238)
(Decrease) increase due to foreign currency fluctuation	6		15
Uncertain tax benefits as of the end of the period	$	778	$	632

17

VONAGE HOLDINGS CORP.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(In thousands, except per share amounts)

(Unaudited)

Net Operating Loss Carry Forwards

As of June 30, 2021, the Company has U.S. Federal and state NOL carryforwards of $410,731 and $207,769, respectively, which expire at various times through 2037. We have non-US NOLs of $159,152 primarily related to the United Kingdom which has no expiration date.

Note 6.    Long-Term Debt

This footnote should be read in conjunction with the complete description of our financing arrangements under Note 8, Long-Term Debt, to the consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2020.

The following table summarizes the Company's long-term debt as of June 30, 2021 and December 31, 2020:

	June 30, 2021		December 31, 2020
Revolving credit facility - due 2023	170,500		215,500
Convertible senior notes - due 2024	345,000		345,000
Long-term debt including current maturities	515,500		560,500
Less unamortized discount	42,224		48,702
Less debt issuance costs	4,716		5,514
Total long-term debt	$	468,560	$	506,284

Convertible Senior Notes

In June 2019, the Company issued $300.0 million aggregate principal amount of 1.75% convertible senior notes due 2024 in a private placement and an additional $45.0 million aggregate principal amount of such notes pursuant to the exercise in full of the over-allotment option of the initial purchasers (collectively, "Convertible Senior Notes"). The Convertible Senior Notes are the Company's senior unsecured obligations. The Convertible Senior Notes will mature on June 1, 2024, unless earlier redeemed, repurchased or converted. We may not redeem the notes prior to June 5, 2022.

Each $1,000 principal amount of the Convertible Senior Notes is initially convertible into 59.8256 shares of the Company's common stock, which is equivalent to an initial conversion price of approximately $16.72 per share. The conversion rate is subject to adjustment upon the occurrence of certain specified events but will not be adjusted for any accrued and unpaid interest. In addition, upon the occurrence of a make-whole fundamental change or a redemption period, each as defined in the indenture setting forth the terms of the Convertible Senior Notes, the Company will, in certain circumstances, increase the conversion rate by a number of additional shares for a holder that elects to convert its Convertible Senior Notes in connection with such make-whole fundamental change or during the relevant redemption period.

Prior to December 1, 2023, the notes will be convertible only upon satisfaction of certain conditions and during certain periods, and thereafter, at any time until the close of business on the second scheduled trading day immediately preceding the maturity date. We will satisfy any conversion election by paying or delivering, as the case may be, cash, shares of common stock or a combination of cash and shares of common stock. During the six months ended June 30, 2021, the conditions allowing holders of the Convertible Senior Notes to convert were not met.

The net carrying amount of the liability component of the Convertible Senior Notes was as follows:

	June 30, 2021
Principal	$	345,000
Unamortized discount	(42,224)
Unamortized issuance cost	(4,716)
Net carrying amount	$	298,060

18

VONAGE HOLDINGS CORP.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(In thousands, except per share amounts)

(Unaudited)

The following table sets forth the interest expense recognized related to the Convertible Senior Notes:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2021		2020		2021		2020
Contractual interest expense	$	1,510	$	1,509	$	3,019	$	3,018
Amortization of debt discount	3,217		3,109		6,478		6,163
Amortization of debt issuance costs	399		399		798		798
Total interest expense related to the Convertible Senior Notes	$	5,126	$	5,017	$	10,295	$	9,979

In connection with the pricing of the Convertible Senior Notes and subsequently in connection with the exercise of the initial purchaser's option to purchase additional notes, the Company entered into privately negotiated capped call transactions with certain counterparties (the "Capped Calls"). The Capped Calls each have a strike price of $16.72 per share, subject to certain adjustments, which corresponds to the initial conversion price of the Convertible Senior Notes. The Capped Calls have initial cap prices of $23.46 per share, subject to certain adjustments. The Capped Calls are expected generally to reduce potential dilution to the Company's common stock upon any conversion of notes and/or offset any cash payments the Company is required to make in excess of the aggregate principal amount of converted notes, as the case may be, with such reduction and/or offset subject to a cap. The initial cap price of the Capped Call transactions was $23.46.

2018 Term Note and Revolving Credit Facility

On July 31, 2018, the Company entered into the 2018 Credit Facility consisting of a $100 million senior secured term loan and a $500 million revolving credit facility. The co-borrowers under the 2018 Credit Facility are the Company and Vonage America Inc., the Company’s wholly owned subsidiary. Obligations under the 2018 Credit Facility are guaranteed, fully and unconditionally, by the Company’s other United States subsidiaries and are secured by substantially all of the assets of each borrower and each guarantor.

During the six months ended June 30, 2021, we repaid $45 million under the revolving facility. In addition, the effective interest rate was 2.88% as of June 30, 2021. During the six months ended June 30, 2020, we borrowed $75 million under the revolving credit facility and repaid $50 million under the revolving facility. As of June 30, 2021, we were in compliance with all covenants, including financial covenants, for the 2018 Credit Facility.

Note 7.  Leases

The Company entered into various non-cancelable operating lease arrangements for certain of our existing office and telecommunications co-location space as well as operating leases for certain equipment. The operating leases expire at various times through 2028, some of which provide the Company options to extend the lease for terms up to 5 years beyond the original term. We are committed to pay a portion of the buildings’ operating expenses as required under the arrangements which we will separate as a non-lease component when readily determinable. The Company did not have any finance leases as of June 30, 2021 and December 31, 2020.

The Company incurred operating lease expense of $2,487 and $5,045, respectively, during the three and six months ended June 30, 2021 and $2,900 and $5,865, respectively, during the three and six months ended June 30, 2020, related to its operating leases. In addition, the Company received sub-lease income of $301 and $585, respectively, during the three and six months ended June 30, 2021 and $292 and $611, respectively, during the three and six months ended June 30, 2020. Additionally, the remaining weighted average lease term for our operating leases was 4.89 years and the weighted average discount rate utilized to measure the Company's operating leases was 4.32% as of June 30, 2021.

19

VONAGE HOLDINGS CORP.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(In thousands, except per share amounts)

(Unaudited)

Supplemental cash flow related to the Company's operating leases is as follows:

	Six Months Ended
	June 30, 2021		June 30, 2020
Cash paid for amounts included in the measurement of lease liabilities	$	5,782	$	8,199
Right-of-use assets obtained in exchange for lease obligations	$	8,431	$	1,261

Maturities of operating lease liabilities as of June 30, 2021 and December 31, 2020 are as follows:

	June 30, 2021		December 31, 2020
2021 (1)	$	5,925	13,134
2022	11,725		9,645
2023	10,876		8,401
2024	6,837		4,148
2025	6,937		4,248
Thereafter	9,539		7,522
Total lease payments	51,839		47,098
Less imputed interest	(4,861)		(4,525)
Total	$	46,978	$	42,573

(1) Excluding six months ended June 30, 2021 for the period ended June 30, 2021.

During the first quarter of 2020, the Company amended one of its office leases to remove a renewal period of 5 years beyond the initial lease term.  In the Company's adoption of ASC 842, the Company had included the available renewal term within the transition asset and liability as the renewal was highly probable at the time of adoption.  As a result, the Company's operating lease liability was reduced by $15,825 with a corresponding reduction in the Company's operating lease right-of-use assets as of March 31, 2020. During the third and fourth quarters of 2020, the Company abandoned a few of its office leases and as such, the Company reduced its operating lease right-of-use asset by $9,503 as of December 31, 2020 by accelerating the amortization of the right-of-use asset through the cease use date which is included in general and administrative expense.

20

VONAGE HOLDINGS CORP.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(In thousands, except per share amounts)

(Unaudited)

Note 8.    Common Stock

As of June 30, 2021 and December 31, 2020, the Company had 596,950 shares of common stock authorized and had 10,388 shares available for grants under our share-based compensation programs as of June 30, 2021. For a detailed description of our share-based compensation programs refer to Note 11, Employee Stock Benefit Plans in the consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2020. The following table reflects the changes in the Company's common stock issued and outstanding:

For the Three Months Ended
(in thousands)	Issued	Treasury	Outstanding
Balance at March 31, 2020	319,880	(74,634)	245,246
Shares issued under the 2015 Equity Incentive Plan	275	—	275
Employee taxes paid on withholding shares	—	(66)	(66)
Balance at June 30, 2020	320,155	(74,700)	245,455
Balance at March 31, 2021	327,427	(76,157)	251,270
Shares issued under the 2015 Equity Incentive Plan	386	—	386
Employee taxes paid on withholding shares	—	(115)	(115)
Balance at June 30, 2021	327,813	(76,272)	251,541
For the Six Months Ended
(in thousands)	Issued	Treasury	Outstanding
Balance at December 31, 2019	315,808	(72,959)	242,849
Shares issued under the 2015 Equity Incentive Plan	4,347		4,347
Employee taxes paid on withholding shares		(1,741)	(1,741)
Balance at June 30, 2020	320,155	(74,700)	245,455
Balance at December 31, 2020	323,815	(74,841)	248,974
Shares issued under the 2015 Equity Incentive Plan	3,998		3,998
Employee taxes paid on withholding shares		(1,431)	(1,431)
Balance at June 30, 2021	327,813	(76,272)	251,541

21

VONAGE HOLDINGS CORP.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(In thousands, except per share amounts)

(Unaudited)

Note 9.    Commitments and Contingencies

Litigation

From time to time we are subject to legal proceedings, claims and investigations relating to our business, including claims of alleged infringement of commercial, employment, intellectual property rights, and other matters. From time to time, we receive letters or other communications from third parties inviting us to obtain patent licenses that might be relevant to our business or alleging that our services infringe upon third-party patents or other intellectual property. In accordance with generally accepted accounting principles, we make a provision for a liability when it is both probable that a liability has been incurred and the amount of the loss or range of loss can be reasonably estimated. These provisions, if any, are reviewed at least quarterly and adjusted to reflect the impacts of negotiations, settlements, rulings, advice of legal counsel, and other information and events pertaining to a particular case. Litigation is inherently unpredictable. We believe that we have valid defenses with respect to the legal matters pending against us and are vigorously defending these matters. Given the uncertainty surrounding litigation and our inability to assess the likelihood of a favorable or unfavorable outcome in such matters and our inability to reasonably estimate the amount of loss or range of loss, it is possible that the resolution of one or more of these matters could have a material adverse effect on our condensed consolidated financial position, cash flows or results of operations.

Regulation

Telephony services are subject to a broad spectrum of state, federal and foreign regulations. Because of the uncertainty over whether VoIP should be treated as a telecommunications or information service, we have been involved in a substantial amount of state and federal regulatory activity. Implementation and interpretation of the existing laws and regulations is ongoing and is subject to litigation by various federal and state agencies and courts. Due to the uncertainty over the regulatory classification of VoIP service, there can be no assurance that we will not be subject to new regulations or existing regulations under new interpretations, and that such change would not introduce material additional costs to our business. The Company continues to monitor federal regulations relating to net neutrality, rural call completion issues, number slamming, 911 access, access to telecommunication equipment and services by persons with disabilities, caller ID services, number portability, unwanted calls to reassigned numbers, and robocalling. As we continue to expand globally, these types of regulations are likely to be similarly enacted and enforced by the local regulatory authorities.  

State and Municipal Taxes

In accordance with generally accepted accounting principles, we make a provision for a liability for taxes when it is both probable that a liability has been incurred and the amount of the liability or range of liability can be reasonably estimated. These provisions are reviewed at least quarterly and adjusted to reflect the impacts of negotiations, settlements, rulings, advice of legal counsel, and other information and events pertaining to a particular case. From time to time, we have received inquiries from a number of states and local taxing agencies with respect to the remittance of sales, use, telecommunications, and excise taxes. Several jurisdictions are currently conducting tax audits of the Company's records. While the Company collects or has accrued for taxes that it believes are required to be remitted, it has reviewed its positions in those various jurisdictions as well as other regulatory fees and has established appropriate reserves. As such, we have established reserves of $9,601 and $8,560 as of June 30, 2021 and December 31, 2020, respectively, as our best estimate of the potential tax exposure for any retroactive assessment.

22

VONAGE HOLDINGS CORP.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(In thousands, except per share amounts)

(Unaudited)

Note 10.  Industry Segment and Geographic Information

ASC 280, Segment Reporting, establishes reporting standards for an enterprise's business segments and related disclosures about its products, services, geographic areas and major customers. Under ASC 280, the method for determining what information to report is based upon the way management organizes the reportable operating segments within the Company for making operating decisions and assessing financial performance. Our chief operating decision-maker reviews revenue and Adjusted EBITDA for each of our reportable operating segments. Beginning as of December 31, 2020, the Company includes Adjusted EBITDA as this is the measure management uses to evaluate the profitability of our reportable operating segments. The items excluded from Adjusted EBITDA are not separately evaluated for each reportable operating segment. The Company has recast data from prior years to reflect the change how the Company evaluates the profitability of its reportable operating segments to conform to the current year presentation. In addition, with the exception of goodwill and intangible assets, we do not identify or allocate our assets by the reportable operating segments as this information is not utilized by management to allocate resources or capital.

Vonage Communications Platform

The Vonage Communications Platform is our single enterprise cloud communications platform, offering our wide range of enterprise communications services and solutions including Communications APIs, Unified Communications, and Contact Center Communications. The Vonage Communications Platform brings unique value to businesses by providing multiple communications channels - video, voice, messaging, email and verification - that integrate into applications, products and workflows. This delivers both the power and the flexibility our customers need to disrupt their industries, and enables the type of business continuity, remote work, and remote delivery of services that are now essential for companies to work and serve customers from anywhere. Vonage products and services enable our business customers to fundamentally change how they engage with their customers and team members. We have a robust set of solutions and services that meet the needs of businesses of all sizes, from micro, to SMB through mid-market and enterprise. We provide customers with multiple deployment options designed to provide the reliability and quality of service they demand. Vonage solutions also integrate with today's leading business applications, CRM and productivity tools,, including Google’s G Suite, Zendesk, Salesforce’s Sales and Service Clouds, Microsoft Dynamics, ServiceNow, Oracle, and Clio among others, to drive internal communications and collaboration among team members and external engagement with customers.

Consumer

For our Consumer customers, we enable users to access and utilize our UCaaS services and features, via a single “identity,” either a number or user name, regardless of how they are connected to the Internet, including over 3G/4G, LTE, Cable, or DSL broadband networks. This technology enables us to offer our Consumer customers attractively priced voice and messaging services and other features around the world on a variety of devices.

23

VONAGE HOLDINGS CORP.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(In thousands, except per share amounts)

(Unaudited)

Information about our segment results for the six months ended June 30, 2021 and June 30, 2020 were as follows:

Three Months Ended	Service Revenue		Revenue		Adjusted EBITDA		Depreciation and Amortization
June 30, 2021
Vonage Communications Platform	$	260,452	$	276,413	$	1,098	$	22,055
Consumer	63,289		75,056		47,707		229
Total Vonage	$	323,741	$	351,469	$	48,805	$	22,284
June 30, 2020
Vonage Communications Platform	$	212,310	$	226,249	$	(17,513)	$	19,650
Consumer	75,045		84,284		59,057		1,042
Total Vonage	$	287,355	$	310,533	$	41,544	$	20,692
Six Months Ended	Service Revenue		Revenue		Adjusted EBITDA		Depreciation and Amortization
June 30, 2021
Vonage Communications Platform	$	500,894	$	531,867	$	(748)	$	42,135
Consumer	128,986		152,502		97,720		566
Total Vonage	$	629,880	$	684,369	$	96,972	$	42,701
June 30, 2020
Vonage Communications Platform	$	407,959	$	436,502	$	(38,601)	$	38,848
Consumer	152,288		171,488		118,982		2,329
Total Vonage	$	560,247	$	607,990	$	80,381	$	41,177

The Company uses Adjusted EBITDA as the measure of profit or loss for the evaluation of performance and allocation of resources of our reportable operating segments. Adjusted EBITDA is defined as net income or net loss attributable to Vonage before income tax expense or benefit, interest expense, depreciation and amortization, stock-based expense, amortization of costs to implement cloud computing arrangements, organizational transformation costs, restructuring activities, and other non-recurring items. Organizational transformation includes employee related exits including CEO succession, system change management, facility exit costs, and rebranding. Restructuring activities relate to the Company's business-wide optimization and alignment project initiated in 2020 which included employee related exits and further facility exit costs executed upon as part of the overall project. Other non-recurring items principally include certain litigation charges including defense costs and other non-recurring project costs such as the review of the Consumer business review and the business optimization project, both of which were initiated in 2020. This is also consistent with the measure used under our bank credit assessment. Our reconciliation of the aggregate amount of Adjusted EBITDA for our reportable segments to consolidated income before taxes is presented below:

24

VONAGE HOLDINGS CORP.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(In thousands, except per share amounts)

(Unaudited)

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2021		2020		2021		2020
Adjusted EBITDA	$	48,805	$	41,544	$	96,972	$	80,381
Interest expense	(7,081)		(9,321)		(14,379)		(17,403)
Depreciation and amortization	(22,284)		(20,692)		(42,701)		(41,177)
Amortization of costs to implement cloud computing arrangements	(961)		(668)		(1,857)		(1,277)
Share-based expense	(15,762)		(11,326)		(30,328)		(22,442)
Organizational transformation	—		(3,925)		—		(5,119)
Restructuring activities	(1,361)		—		(2,655)		—
Other non-recurring items	(563)		(2,549)		(2,454)		(3,905)
Income (Loss) before taxes	$	793	$	(6,937)	$	2,598	$	(10,942)

Information about our operations by geographic location is as follows:

	June 30, 2021		December 31, 2020
Long-lived assets:
United States	$	635,174	$	646,072
United Kingdom	291,929		293,457
Israel	1,072		1,325
	$	928,175	$	940,854

25

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

You should read the following discussion together with our condensed consolidated financial statements and the related notes included elsewhere in this Form 10-Q and our audited financial statements included in our Annual Report on Form 10-K. This discussion contains forward-looking statements. These forward-looking statements are based on information available at the time the statements are made and/or management’s belief as of that time with respect to future events and involve risks and uncertainties that could cause actual results and outcomes to be materially different. Important factors that could cause such differences include but are not limited to: realizing the benefits of optimization and cost-saving initiatives; the impact of the COVID-19 pandemic; the competition we face; the expansion of competition in the cloud communications market; risks related to the acquisition or integration of businesses we have acquired; our ability to adapt to rapid changes in the cloud communications market; the nascent state of the cloud communications for business market; our ability to retain customers and attract new customers cost-effectively; the risk associated with developing and maintaining effective internal sales teams and effective distribution channels; security breaches and other compromises of information security; risks associated with sales of our services to medium-sized and enterprise customers; our reliance on third-party hardware and software; our dependence on third-party facilities, equipment, systems and services; system disruptions or flaws in our technology and systems; our ability to comply with data privacy and related regulatory matters; our ability to scale our business and grow efficiently; our dependence on third party vendors; the impact of fluctuations in economic conditions, particularly on our small and medium business customers; our ability to obtain or maintain relevant intellectual property licenses or to protect our trademarks and internally developed software; restrictions in our debt agreements that may limit our operating flexibility; our ability to obtain additional financing if required; our ability to raise funds necessary to settle conversion of the 2024 convertible senior notes; conditional conversion features of the convertible senior notes; the cash settlement of the convertible senior notes; the effects of the capped call transactions in connection with the convertible senior notes; fraudulent use of our name or services; intellectual property and other litigation that have been and may be brought against us; reliance on third parties for our 911 services; uncertainties relating to regulation of business services; risks associated with legislative, regulatory or judicial actions regarding our business products; risks associated with operating abroad; risks associated with the taxation of our business; governmental regulation and taxes in our international operations; liability under anti-corruption laws or from governmental export controls or economic sanctions; our dependence on our customers' unimpeded access to broadband connections; foreign currency exchange risk; our history of net losses and ability to achieve consistent profitability in the future; our ability to fully realize the benefits of our net operating loss carry-forwards if an ownership change occurs; certain provisions of our charter documents; and other factors that are set forth under “Risk Factors” in Item 1A of our Annual Report on Form 10-K for the fiscal year ended December 31, 2020. While we may elect to update forward-looking statements at some point in the future, we specifically disclaim any obligation to do so, and therefore, you should not rely on these forward-looking statements as representing our views as of any date subsequent to the date this Form 10-Q is filed with the Securities and Exchange Commission.

Financial Information Presentation

Management's discussion and analysis of financial condition and results of operations is provided as a supplement to, and should be read in connection with, the consolidated financial statements and related notes thereof. For the financial information discussed in this Quarterly Report on Form 10-Q, other than per share and per line amounts, dollar amounts are presented in thousands, except where noted. All trademarks are the property of their owners.

Overview

At Vonage, our vision is to accelerate the world's ability to connect. We are observing a secular change in the way business is done, with a fundamental shift in how communications technologies are being leveraged in almost every industry. Through the Vonage Communications Platform, our strategy is to deliver a single leading cloud communications platform that powers our customers' and partners' global engagement solutions using our APIs, Unified Communications, and Contact Center innovations. We believe that the Vonage Communications Platform's products and services are well positioned to take advantage of emerging trends with sizable, growing total addressable markets as companies look to cloud-based communications solutions and API programming architectures as part of their digital transformation.

Our business is organized under two reportable operating segments: Vonage Communications Platform and Consumer. The Vonage Communications Platform includes our Unified Communications, Contact Center Communications, and APIs service offerings and represents the Company’s strategic business as the source of future growth. Our Consumer segment includes our communications solutions for residential customers based on our roots in providing VoIP communication services.

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Vonage Communications Platform

Our strategic business is the Vonage Communications Platform which delivers a single leading cloud communications platform that powers our customers' and partners' global engagement solutions using our APIs, Unified Communications, and Contact Center innovations. The Vonage Communications Platform brings unique value to businesses by providing multiple communications channels - including video, voice, messaging, email, verification, and artificial intelligence - that integrate into the applications, products and workflows that our customers are already using. We believe this delivers both the power and the flexibility to our customers to address the growing need to transform their communications, connections and experiences for customers and enables the type of business continuity, remote work, and remote delivery of services that are now essential for team members.

Consumer

For our Consumer customers, we enable users to access and utilize our services and features, via their existing internet connections, including over 3G/4G, LTE, Cable, or DSL broadband networks. This technology enables us to offer our Consumer customers attractively priced voice and messaging services and other features around the world on a variety of devices. Our Consumer strategy is focused on the continued penetration of our core North American markets, which provide value in international long distance and target under-served segments.

Services Outside of the United States

We have operations in the United States, United Kingdom, Canada, Israel, Hong Kong, and Singapore, and provide a wide range of communications solutions to our customers located in many countries around the world.

Impact of COVID-19

A novel strain of coronavirus, or COVID-19, was first identified in China in December 2019 and subsequently declared a pandemic on March 11, 2020, by the World Health Organization. To date, COVID-19 has impacted nearly all regions around the world and resulted in travel restrictions and business slowdowns worldwide. The full impact of the pandemic on our business, operations and financial results has and will depend on various factors that continue to evolve, which we may not accurately predict. In response to the COVID-19 pandemic, governments across the world have enacted measures aimed at containing the spread of the virus, including the practice of social distancing when engaging in authorized activities. While some of these restrictions have been lifted on a global scale, many regions, including the United States where Vonage is headquartered, are experiencing a resurgence of COVID-19 variants. As a result of the ongoing COVID-19 pandemic, typical business travel remains at reduced levels to protect the health of our employees and to comply with local guidelines, and we have also continued modified usage of Vonage offices worldwide to comply with social distancing (including our corporate headquarters), all of which disrupt how we typically operate our business.

COVID-19 has impacted some of our customers more than others, including customers in the travel, hospitality, retail, and other industries where physical interaction is critical. We have experienced and expect that we will continue to experience slowdowns in bookings and customer payments, customer churn and reduced usage, and issuance of customer credits to distressed customers served by certain product lines in the Vonage Communications Platform. In addition, COVID-19 may have impacts on many additional aspects of our operations, directly and indirectly, including with respect to its impacts on customer behaviors, our business and our employees, and the market generally, and the scope and nature of these impacts continue to evolve each day.

Trends in Our Industry

A number of trends in our industry have a significant effect on our results of operations and are important to an understanding of our financial statements.

Competitive landscape. The business cloud communications markets and consumer services market in which we participate are highly competitive. We face competition from a broad set of companies, including (i) SaaS companies, CCaaS companies, other alternative communication providers, other providers of cloud communication services and (ii) traditional telephone, wireless service providers, cable companies, and alternative communications providers with consumer offerings. As the cloud communications market evolves, and the convergence of voice, video, messaging, mobility and data networking technologies accelerates, we may face competition in the future from companies that do not currently compete in the market, including companies that currently compete in other sectors, companies that serve consumers rather than business customers, or companies which expand their market presence to include cloud communications. Moreover, as businesses and educational institutions are quickly pivoting to cloud-based communications in light the increased need for remote work and remote learning due to the COVID-19 pandemic, we are experiencing intense competition from our existing competitors, and also emerging competitors, seeking to capitalize on the growing needs for businesses and educators to transform their operations.

Regulation. Our business has developed in a relatively lightly regulated environment. See the discussion under "Regulation" in Note 9 to our condensed consolidated financial statements for a discussion of regulatory issues that impact us.

27

Key Operating Data

The table below includes key operating data that our management uses to measure the growth and operating performance of the Vonage Communications Platform segment:

Vonage Communications Platform	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2021			2020			2021		2020
Service revenue per customer	$	632		$	509		$	607	$	492
Vonage Communications Platform service revenue churn	1.0		%	0.9		%	0.7%.		0.9		%

Service Revenue per Customer. Service revenues per customer for a particular period is calculated by dividing the average monthly service revenues for the period by the average number of customers over the number of months in the period. The average number of customers is the number of customers on the first day of the period, plus the number of customers on the last day of the period, divided by two. Service revenues excludes revenues from trading and auction customers. Service revenue per customer increased from $509 for the three months ended June 30, 2020 to $632 for the three months ended June 30, 2021 primarily driven by the Company's successful efforts to attract larger VCP customers and to expand services provided to our existing VCP customers. Service revenue per customer increased from $492 for the six months ended June 30, 2020 to $607 for the six months ended June 30, 2021 primarily driven by growth in API services.

Vonage Communications Platform Service Revenue Churn. Vonage Communications Platform service revenue churn is calculated by dividing the service revenue from customers or customer locations that have been confirmed to be foregone during a period by the simple average of the total service revenue from all customers in that period. Service revenue for purposes of determining VCP revenue churn is service revenue excluding revenue from our trading and auction customers, and usage in excess of a customer’s contracted service plan, regulatory fees charged to customers, and credits. The simple average of total service revenue from all customers during the period is the total service revenue as defined herein on the first day of the period, plus the total service revenue as defined herein on the last day of the period, divided by two. Terminations, as used in the calculation of churn statistics, do not include customers terminated during the period if termination occurred within the first month after activation. Other companies may calculate service revenue churn differently, and their service revenue churn data may not be directly comparable to ours. Vonage Communications Platform revenue churn increased from 0.9% for the three months ended June 30, 2020 to 1.0% for the three months ended June 30, 2021.  Vonage Communications Platform revenue churn decreased from 0.9% for the six months ended June 30, 2020 to 0.7%. for the six months ended June 30, 2021. Our service revenue churn may fluctuate over time due to economic conditions, seasonality in certain customer's operations, loss of customers who are acquired, and competitive pressures including promotional pricing. We are continuing to invest in our overall quality of service which includes customer care headcount and systems, billing systems, on-boarding processes and self-service options to ensure we scale our processes to our growth and continue to improve the overall customer experience.

The table below includes key operating data that our management uses to measure the growth and operating performance of the Consumer segment:

Consumer	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2021			2020			2021			2020
Average monthly revenues per subscriber line	$	29.37		$	27.59		$	29.11		$	27.40
Subscriber lines (at period end)	836,243			998,475			836,243			998,475
Customer churn	1.5		%	1.5		%	1.7		%	1.6		%

Average Monthly Revenues per Subscriber Line. Average monthly revenues per subscriber line for a particular period is calculated by dividing our revenues for that period by the simple average number of subscriber lines for the period, and dividing the result by the number of months in the period. The simple average number of subscriber lines for the period is the number of subscriber lines on the first day of the period, plus the number of subscriber lines on the last day of the period, divided by two. Our average monthly revenues per subscriber line increased from $27.59 for the three months ended June 30, 2020 to $29.37 for the three months ended June 30, 2021 due primarily to the Company's ability to retain its more tenured customers. Our average monthly revenues per subscriber line increased from $27.40 for the six months ended June 30, 2020 to $29.11 for the six months ended June 30, 2021 due primarily to the Company's ability to retain its more tenured customers.

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Subscriber Lines. Our subscriber lines include, as of a particular date, all paid subscriber lines from which a customer can make an outbound telephone call on that date. Our subscriber lines include fax lines, including fax lines bundled with subscriber lines in our small office home office calling plans and soft phones, but do not include our virtual phone numbers and toll free numbers, which only allow inbound telephone calls to customers. Subscriber lines decreased from 998,475 as of June 30, 2020 to 836,243 as of June 30, 2021, reflecting planned actions to enhance the profitability of the assisted sales channel by eliminating lower performing locations and restructuring the pricing offers, and to shift investment to our business market.

Customer Churn. Customer churn is calculated by dividing the number of customers that have terminated during a period by the simple average of number of customers in a given period. The simple average number of customers during the period is the number of customers on the first day of the period, plus the number of customers on the last day of the period, divided by two. Terminations, as used in the calculation of churn statistics, do not include customers terminated during the period if termination occurred within the first month after activation. Other companies may calculate customer churn differently, and their customer churn data may not be directly comparable to ours. Customer churn was flat at 1.5% for the three months ended June 30, 2021 and 2020, respectively. Customer churn increased to 1.7% for the six months ended June 30, 2021 from 1.6% for the six months ended June 30, 2020, respectively. We maximize customer value by focusing marketing spend on higher return channels and away from assisted selling channels which had higher early life churn. We monitor customer churn on a daily basis and use it as an indicator of the level of customer satisfaction. Customers who have been with us for a year or more tend to have a lower churn rate than customers who have not. In addition, our customers who are international callers generally churn at a lower rate than customers who are domestic callers. Our customer churn will fluctuate over time due to economic conditions, competitive pressures including promotional pricing targeting international long distance callers, marketplace perception of our services, and our ability to provide high quality customer care and network quality and add future innovative products and services. See the discussion above for detail regarding churn impacting our business customers.

REVENUE

Revenues consist of services revenue and customer equipment and shipping fee revenue. Substantially all of our revenues are services revenue. For Consumer customers in the United States, we offer domestic and international rate plans, including a variety of residential plans and mobile plans. For our VCP customers, we offer micro, SMB, mid-market, and enterprise customers several service plans with different pricing structures and contractual requirements ranging in duration from month-to-month to three years. In addition, we provide managed equipment to VCP customers for which the customers pay a monthly fee. Customers also have the opportunity to purchase premium features for additional fees. In addition, we derive revenue from usage-based fees earned from customers using our cloud-based software products. These usage-based software products include our messaging, voice, Verify and chat APIs. Usage-based fees include number of text messages sent or received using our messaging APIs, minutes of call duration activity for our voice APIs, and number of converted authentications for our Verify API. Services revenue is offset by the cost of certain customer acquisition activities, such as rebates and promotions. In addition, in certain instances, we charge disconnect fees which are recognized as revenue at the time the disconnect fees are collected from our customer.

In the United States, we charge regulatory, compliance and intellectual property, and E-911 recovery fees on a monthly basis to defray costs, and to cover taxes that we are charged by the suppliers of telecommunications services. In addition, we recognize revenue on a gross basis for contributions to the USF and related fees. All other taxes are recorded on a net basis.

Revenues are generated from sales of customer equipment directly to customers for replacement devices, or for upgrading their device at the time of customer sign-up for which we charge an additional fee. In addition, customer equipment and shipping revenues include revenues from the sale of VoIP telephones in order to access our small and medium business services. Customer equipment and shipping revenues also include the fees that customers are charged for shipping their customer equipment to them.

OPERATING EXPENSES

Operating expenses consist of cost of revenues, sales and marketing expense, engineering and development expense, general and administrative expense, and depreciation and amortization.

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Results of Operations

The following table sets forth our condensed consolidated statements of operations for the periods indicated:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2021		2020		2021		2020
Total revenues	$	351,469	$	310,533	$	684,369	$	607,990
Operating Expenses:
Cost of revenues (exclusive of depreciation and amortization)	168,797		133,988		325,584		261,406
Sales and marketing	86,215		90,827		167,689		176,448
Engineering and development	22,710		19,784		43,070		38,987
General and administrative	43,301		42,820		88,234		83,702
Depreciation and amortization	22,284		20,692		42,701		41,177
Total operating expenses	343,307		308,111		667,278		601,720
Income from operations	8,162		2,422		17,091		6,270
Other Income (Expense):
Interest expense	(7,081)		(9,321)		(14,379)		(17,403)
Other income (expense), net	(288)		(38)		(114)		191
Total other income (expense), net	(7,369)		(9,359)		(14,493)		(17,212)
Income (Loss) before income tax benefit	793		(6,937)		2,598		(10,942)
Income tax expense	(731)		(1,493)		(2,912)		(1,243)
Net income (loss)	$	62	$	(8,430)	$	(314)	$	(12,185)

Management's Discussion of the Results of Operations for the Three and Six Months Ended June 30, 2021 and 2020

The Company reported income before income taxes of $793 and loss before income taxes of $6,937 for the three months ended June 30, 2021 and June 30, 2020, respectively. The income before income taxes for the three months ended June 30, 2021 was primarily due to higher gross margin dollars of $6,127 driven by increased sales within the VCP platform primarily associated with the 40% growth in API services as compared to the prior year quarter.

The Company reported income before income taxes of $2,598 and loss before income taxes of $10,942 for the six months ended June 30, 2021 and June 30, 2020, respectively. The income before income taxes for the six months ended June 30, 2021 was primarily due to higher gross margin dollars of $12,201 driven by increased sales within the VCP platform primarily associated with the 43% growth in API services as compared to the six months ended June 30, 2020. This was slightly offset by higher operating expenses of $1,380.

The Company reported net income of $62 and net loss of $8,430 for the three months ended June 30, 2021 and June 30, 2020, respectively. The Company reported net loss of $314 and $12,185 for the six months ended June 30, 2021 and June 30, 2020, respectively. The increase in net income for the three months ended June 30, 2021 and net loss for six months ended June 30, 2021 compared to net loss for the three and six months ended June 30, 2020 was due to the income before income taxes for the three and six months ended June 30, 2021 and loss before income taxes for the three and six months ended June 30, 2020 as discussed above. While the Company reported income before income tax for the three and six months ended June 30, 2021 and loss before income tax for the three and six months ended June 30, 2020, the Company recognized tax expense of $731, $1,493, $2,912 and $1,243, respectively, during the three months ended June 30, 2021 and 2020 and the six months ended June 30, 2021 and 2020. The tax expense during the three and six months ended June 30, 2021 was driven by an increase in permanent items related to limitations on executive compensation and the inclusion of foreign income in the U.S. due to foreign disregarded entities.

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Segment Adjusted EBITDA

The following graphs illustrate the composition of our Adjusted EBITDA with respect to each of our reportable segments for the three and six months ended June 30, 2021 and June 30, 2020.

The Adjusted EBITDA for Vonage Communications Platform has improved from loss of $17,513 and $38,601 for the three and six months ended June 30, 2020 to income of $1,098 and loss of $748 for the three and six months ended June 30, 2021, respectively. This improvement in Vonage Communications Platform Adjusted EBITDA is primarily due to an increase in Vonage Communications Platform gross margin dollars of $17,723 and $35,302, respectively, for the three and six months ended June 30, 2021, as the Company experience growth in API services as compared to the prior year. Adjusted EBITDA for Vonage Communications Platform was also positively impacted in the three and six months ended June 30, 2021 due to cost saving initiatives executed in the second half of 2020. The decline of Consumer Adjusted EBITDA for the three and six months ended June 30, 2021 as compared to the three and six months ended June 30, 2020 is primarily driven by the decrease in subscriber lines year over year as further described below.

Consolidated Gross Margin for the Three and Six Months Ended June 30, 2021 and June 30, 2020

We calculate gross margin as total revenues less cost of revenues, which primarily consists of fees that we pay to third parties on an ongoing basis in order to provide our services and costs incurred when a customer first subscribes to our service. The following table presents consolidated revenues, cost of revenues and the composition of gross margin for the three months ended June 30, 2021 and 2020:

(in thousands, except percentages)	Three Months Ended								Six Months Ended
	June 30,								June 30,
	2021		2020		Dollar Change		Percent Change		2021		2020		Dollar Change		Percent Change
Service, access and product revenues	$	332,559	$	296,516	$	36,043	12	%	$	647,352	$	579,593	$	67,759	12	%
USF revenues	18,910		14,017		4,893		35	%	$	37,017	$	28,397	$	8,620	30	%
Total revenues	351,469		310,533		40,936		13	%	$	684,369	$	607,990	$	76,379	13	%
Service, access and product cost of revenues	149,887		119,971		29,916		25	%	288,567		233,009		55,558		24	%
USF cost of revenues	18,910		14,017		4,893		35	%	37,017		28,397		8,620		30	%
Total cost of revenues (1)	168,797		133,988		34,809		26	%	325,584		261,406		64,178		25	%
Gross margin	$	182,672	$	176,545	$	6,127	3	%	$	358,785	$	346,584	$	12,201	4	%

(1) Excludes depreciation and amortization of $15,515 and $11,148 for the three months ended June 30, 2021 and 2020, respectively and $29,162 and $22,304 for the six months ended June 30, 2021 and 2020, respectively.

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Total revenues and cost of revenues were impacted by the following trends and uncertainties:

Three Months Ended June 30, 2021 Compared to Three Months Ended June 30, 2020

Total revenues increased 13% for the three months ended June 30, 2021 as compared to the prior year period. The increase was primarily due to the VCP customer growth driving an increase in revenues of $50,164 as a result of increased usage on the Company's API Platform in the current year. Due to the increase in the USF rate, USF revenues increased as well. The increase in total revenues was partially offset by declining Consumer revenues of $9,228 in connection with the continued decline of Consumer subscriber lines. The Company continues to expect that the Consumer portion of the Company's overall business will become less significant. The Company will focus its resources in an effort to increase market share in its VCP communications platforms.

Total cost of revenues increased 26% for the three months ended June 30, 2021 as compared to the prior year period driven by increased costs incurred in servicing our VCP customers of $32,441 due to the 40% growth in API services. There was also an increase in costs in Consumer of $2,368 mainly due to the increase in USF costs offset by the decline in subscriber lines resulting in lower international and long-distance termination costs.

Six Months Ended June 30, 2021 Compared to Six Months Ended June 30, 2020

Total revenues increased 13% for the six months ended June 30, 2021 as compared to the prior year period. The increase was primarily due to the VCP customer growth driving an increase in revenues of $95,365 as a result of increased usage on the Company's API Platform in the current year. Due to the increase in the USF rate, USF revenues increased as well. The increase in total revenues was partially offset by declining Consumer revenues of $18,986 in connection with the continued decline of Consumer subscriber lines.

Total cost of revenues increased 25% for the six months ended June 30, 2021 as compared to the prior year period driven by increased costs incurred in servicing our VCP customers of $60,063 due to the 43% growth in API services as compared to the six months ended June 30, 2020. There was also an increase in costs in Consumer of $4,115 mainly due to the increase in USF costs offset by the decline in subscriber lines resulting in lower international and long-distance termination costs.

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Vonage Communications Platform Gross Margin for the Three and Six Months Ended June 30, 2021 and 2020

	Three Months Ended								Six Months Ended
	June 30,								June 30,
(in thousands, except percentages)	2021		2020		Dollar Change		Percent Change		2021		2020		Dollar Change		Percent Change
Revenues
Service revenues	$	260,452	$	212,310	$	48,142	23	%	$	500,894	$	407,959	$	92,935	23	%
Access and product revenues(1)	8,765		9,109		(344)		(4)	%	17,363		19,231		(1,868)		(10)	%
Service, access and product revenues excluding USF	269,217		221,419		47,798		22	%	518,257		427,190		91,067		21	%
USF revenues	7,196		4,830		2,366		49	%	13,610		9,312		4,298		46	%
Total revenues	276,413		226,249		50,164		22	%	531,867		436,502		95,365		22	%
Cost of revenues
Service cost of revenues (2)	130,351		100,638		29,713		30	%	250,368		192,995		57,373		30	%
Access and product cost of revenues (1)	10,628		10,266		362		4	%	20,254		21,862		(1,608)		(7)	%
Service, access and product cost of revenues excluding USF	140,979		110,904		30,075		27	%	270,622		214,857		55,765		26	%
USF cost of revenues	7,196		4,830		2,366		49	%	13,610		9,312		4,298		46	%
Total cost of revenues	148,175		115,734		32,441		28	%	284,232		224,169		60,063		27	%
Segment gross margin
Service margin	130,101		111,672		18,429		17	%	250,526		214,964		35,562		17	%
Gross margin excluding USF (Service, access and product margin)	128,238		110,515		17,723		16	%	247,635		212,333		35,302		17	%
Segment gross margin	$	128,238	$	110,515	$	17,723	16	%	$	247,635	$	212,333	$	35,302	17	%

Segment gross Margin %
Service margin %	50.0	%	52.6	%	50.0	%	52.7	%
Gross margin excluding USF (Service, access and product margin) %	47.6	%	49.9	%	47.8	%	49.7	%
Segment gross margin %	46.4	%	48.8	%	46.6	%	48.6	%

(1) Includes customer premise equipment, access, and shipping and handling.

(2) Excludes depreciation and amortization of $15,286 and $9,891 for the three months ended June 30, 2021 and 2020 and $28,596 and $19,679 for the six months ended June 30, 2021 and 2020, respectively.

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Three Months Ended June 30, 2021 compared to Three Months Ended June 30, 2020

The following table describes the increase in VCP gross margin dollars for the three months ended June 30, 2021 as compared to the three months ended June 30, 2020:

	(in thousands)
Service gross margin increase is primarily due to increased usage of the Company's API services primarily in APAC	$	18,429
Access and product gross margin decreased due to higher costs providing access services to VCP customers during the current quarter	(706)
Increase in segment gross margin	$	17,723

Vonage Communications Platform service gross margin percentage decreased to 50.0% for the three months ended June 30, 2021 from 52.6% for the three months ended June 30, 2020. The decrease in business service gross margin percentage is a result of greater proportion of lower margin services across our VCP segment during the quarter ended June 30, 2021 as compared to the same period in the prior year quarter. Revenues from API services have grown to 55% of VCP revenues for the three months ended June 30, 2021 from 49% of VCP revenues during the prior year quarter driven by growth in part of API services. Our gross margin percentage may continue to be impacted by changes in the mix of service offerings provided to our customers across our VCP segment.

Six Months Ended June 30, 2021 Compared to Six Months Ended June 30, 2020

The following table describes the increase in VCP gross margin dollars for the six months ended June 30, 2021 as compared to the three months ended June 30, 2020:

	(in thousands)
Service gross margin increase is primarily due to increased usage of the Company's API services primarily in APAC	$	35,562
Access and product gross margin decreased due to higher costs providing access services to VCP customers during the current quarter	(260)
Increase in segment gross margin	$	35,302

Vonage Communications Platform service gross margin percentage decreased to 50.0% for the six months ended June 30, 2021 from 52.7% for the six months ended June 30, 2020. The decrease in business service gross margin percentage is a result of greater proportion of lower margin services across our VCP segment during the six months ended June 30, 2021 as compared to the same period in the prior year. Revenues from API services have grown to 54% of VCP revenues for the six months ended June 30, 2021 from 46% of VCP revenues during the prior year driven by growth in part of API services. Our gross margin percentage may continue to be impacted by changes in the mix of service offerings provided to our customers across our VCP segment.

34

Consumer Gross Margin for the Three and Six Months Ended June 30, 2021 and 2020

	Three Months Ended								Six Months Ended
	June 30,								June 30,
(in thousands, except percentages)	2021		2020		Dollar Change		Percent Change		2021		2020		Dollar Change		Percent Change
Revenues
Service revenues	$	63,289	$	75,045	$	(11,756)	(16)	%	$	128,986	$	152,288	$	(23,302)	(15)	%
Access and product revenues(1)	53		52		1		2	%	109		115		(6)		(5)	%
Service, access and product revenues excluding USF	63,342		75,097		(11,755)		(16)	%	129,095		152,403		(23,308)		(15)	%
USF revenues	11,714		9,187		2,527		28	%	23,407		19,085		4,322		23	%
Total revenues	75,056		84,284		(9,228)		(11)	%	152,502		171,488		(18,986)		(11)	%
Cost of revenues
Service cost of revenues (2)	8,412		8,671		(259)		(3)	%	16,925		17,183		(258)		(2)	%
Access and product cost of revenues (1)	496		396		100		25	%	1,020		969		51		5	%
Service, access and product cost of revenues excluding USF	8,908		9,067		(159)		(2)	%	17,945		18,152		(207)		(1)	%
USF cost of revenues	11,714		9,187		2,527		28	%	23,407		19,085		4,322		23	%
Total cost of revenues	20,622		18,254		2,368		13	%	41,352		37,237		4,115		11	%
Segment gross margin
Service margin	54,877		66,374		(11,497)		(17)	%	112,061		135,105		(23,044)		(17)	%
Gross margin excluding USF (Service, access and product margin)	54,434		66,030		(11,596)		(18)	%	111,150		134,251		(23,101)		(17)	%
Segment gross margin	$	54,434	$	66,030	$	(11,596)	(18)	%	$	111,150	$	134,251	$	(23,101)	(17)	%

Segment gross Margin %
Service margin %	86.7	%	88.4	%	86.9	%	88.7%
Gross margin excluding USF (Service, access and product margin) %	85.9	%	87.9	%	86.1	%	88.1%
Segment gross margin %	72.5	%	78.3	%	72.9	%	78.3%

(1) Includes customer premise equipment and shipping and handling.

(2) Excludes depreciation and amortization of $229 and $1,257 for the three months ended June 30, 2021 and 2020 and $566 and $2,625 for the six months ended June 30, 2021 and 2020, respectively.

35

Three Months Ended June 30, 2021 Compared to Three Months Ended June 30, 2020

The following table describes the decrease in consumer gross margin dollars for the three months ended June 30, 2021 as compared to the three months ended June 30, 2020:

	(in thousands)
Service gross margin decreased primarily due to a decrease in subscriber lines of 16% resulting in lower gross margin of $11,284 which has been declining over recent years	$	(11,497)
Access and product gross margin decreased 29% primarily due to sales to customers during the current quarter	(99)
Decrease in segment gross margin	$	(11,596)

Consumer service gross margin percentage decreased to 86.7% for the three months ended June 30, 2021 from 88.4% for the three months ended June 30, 2020 due to slightly higher international and domestic termination rates.

Six Months Ended June 30, 2021 Compared to Six Months Ended June 30, 2020

The following table describes the decrease in consumer gross margin dollars for the six months ended June 30, 2021 as compared to the six months ended June 30, 2020:

	(in thousands)
Service gross margin decreased primarily due to a decrease in subscriber lines of 16% resulting in lower gross margin of $22,902, which has been declining over recent years	$	(23,044)
Access and product gross margin decreased 7% primarily due to sales to customers for the six months ended June 30, 2021	(57)
Decrease in segment gross margin	$	(23,101)

Consumer service gross margin percentage decreased to 86.9% for the six months ended June 30, 2021 from 88.7% for the six months ended June 30, 2020 due to slightly higher international and domestic termination rates.

36

Other Operating Expenses 

The following table presents our other operating costs during the six months ended June 30, 2021 and 2020, respectively:

	Three Months Ended								Six Months Ended
	June 30,								June 30,
(in thousands, except percentages)	2021		2020		Dollar Change		Percent Change		2021		2020		Dollar Change		Percent Change
Sales and marketing	$	86,215	$	90,827	$	(4,612)	(5)	%	$	167,689	$	176,448	$	(8,759)	(5)	%
Engineering and development	22,710		19,784		2,926		15	%	43,070		38,987		4,083		10	%
General and administrative	43,301		42,820		481		1	%	88,234		83,702		4,532		5	%
Depreciation and amortization	22,284		20,692		1,592		8	%	42,701		41,177		1,524		4	%
Total other operating expenses	$	174,510	$	174,123	$	387	—	%	$	341,694	$	340,314	$	1,380	—	%

Three Months Ended June 30, 2021 Compared to Three Months Ended June 30, 2020

Total other operating expenses increased by $387 as compared to the three months ended June 30, 2020 due to the following:

•Sales and marketing expense decreased by $4,612, primarily due to the realization of cost savings related to initiatives executed during the second half of the prior year.

•Engineering and development expense increased by $2,926, in connection with the Company's increased employee related costs as there is continued focus on innovation and developing further functionality related to its proprietary platform in order to support customers through the mid-market and enterprise sector.

Six Months Ended June 30, 2021 Compared to Six Months Ended June 30, 2020

Total other operating expenses increased by $1,380 as compared to the six months ended June 30, 2020 due to the following:

•Sales and marketing expense decreased by $8,759, primarily due to the realization of cost savings related to initiatives executed during the second half of the prior year along with lower travel related costs in the current year as travel continues to be limited due to the ongoing pandemic.

•Engineering and development expense increased by $4,083, in connection with the Company's increased employee related costs as there is continued focus on innovation and developing further functionality related to its proprietary platform in order to support customers through the mid-market and enterprise sector.

•General and administrative expense increased by $4,532, primarily due to an increase in stock compensation expense to employees and a $2 million donation to the Company's foundation in the current year. This was slightly offset by decreased employee costs as the Company has begun to realize cost savings associated with the initiatives executed upon in the prior year.

37

Other Income (Expense)

(in thousands, except percentages)	Three Months Ended								Six Months Ended
	June 30,								June 30,
	2021		2020		Dollar Change		Percent Change		2021		2020		Dollar Change		Percent Change
Interest expense	$	(7,081)	$	(9,321)	$	2,240	24	%	$	(14,379)	$	(17,403)	$	3,024	17	%
Other income (expense), net	(288)		(38)		(250)		658	%	(114)		191		(305)		160	%
	$	(7,369)	$	(9,359)	$	1,990			$	(14,493)	$	(17,212)	$	2,719

Three Months Ended June 30, 2021 Compared to Three Months Ended June 30, 2020

Interest expense. The decrease in interest expense of $2,240, or 24%, was mainly due to lower interest expense due to lower principal balances on our 2018 Credit Facility.

Six Months Ended June 30, 2021 Compared to Six Months Ended June 30, 2020

Interest expense. The decrease in interest expense of $3,024, or 17%, was mainly due to lower interest expense due to lower principal balances on our 2018 Credit Facility.

Income Taxes

(in thousands, except percentages)	Three Months Ended										Six Months Ended
	June 30,										June 30,
	2021			2020			Dollar Change		Percent Change		2021			2020			Dollar Change		Percent Change
Income tax (expense) benefit	$	(731)		$	(1,493)		$	762	51	%	$	(2,912)		$	(1,243)		$	(1,669)	(134)	%
Effective tax rate	(92)		%	22		%					(112)		%	11		%

Three Months Ended June 30, 2021 Compared to Three Months Ended June 30, 2020

The tax expense recorded for the three months ended June 30, 2021 compared to the three months ended June 30, 2020 is primarily due to an increase in permanent items related to limitations on executive compensation, the inclusion of foreign income in the U.S. due to foreign disregarded entities, and limitation on foreign losses as compared to the three months ended June 30, 2020. For the three months ended June 30, 2021, the actual discrete was determined to be the appropriate method for calculating the interim tax provision as using the estimated annual effective tax rate method would have produced an unreliable rate stemming from a marginal loss and large permanent adjustments.

Six Months Ended June 30, 2021 Compared to Six Months Ended June 30, 2020

The tax expense recorded for the six months ended June 30, 2021 compared to the six months ended ended June 30, 2020 is primarily due to an increase in permanent items related to limitations on executive compensation, the inclusion of foreign income in the U.S. due to foreign disregarded entities, and limitation on foreign losses as compared to the six months ended June 30, 2020. For the six months ended June 30, 2021, the actual discrete was determined to be the appropriate method for calculating the interim tax provision as using the estimated annual effective tax rate method would have produced an unreliable rate stemming from a marginal loss and large permanent adjustments.

38

Non-GAAP Metrics

Adjusted EBITDA is a non-GAAP financial measure and is the primary basis used as the measure of profit or loss for our businesses. Adjusted EBITDA is defined as net income or net loss attributable to Vonage before income tax expense or benefit, interest expense, depreciation and amortization, stock-based expense, amortization of costs to implement cloud computing arrangements, organizational transformation costs, restructuring activities, and other non-recurring items. Organizational transformation in the prior year included employee related exits including CEO succession, system change management, facility exit costs, and rebranding. Restructuring activities relate to the Company's business-wide optimization and alignment project initiated in 2020 which included employee related exits and facility exit costs executed upon as part of the overall project. Other non-recurring items principally include certain litigation charges including defense costs and other non-recurring project costs such as the review of the Consumer business review and the business optimization project, both of which were initiated in 2020. This is also consistent with the measure used under our bank credit assessment. Our management and our Board of Directors utilize Adjusted EBITDA to evaluate our consolidated operating performance and the performance of our operating segments and to allocate resources and capital to our segments. It is also a significant performance measure in our annual incentive compensation programs. We believe that Adjusted EBITDA is useful to our investors as a basis for comparing our operating performance with that of other companies in our industries, although our measure of Adjusted EBITDA may not be directly comparable to that of other companies.

Our reconciliation of the aggregate amount of Adjusted EBITDA to consolidated income before taxes is presented below:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2021		2020		2021		2020
Net income (loss)	$	62	$	(8,430)	$	(314)	$	(12,185)
Income tax expense	731		1,493		2,912		1,243
Interest expense	7,081		9,321		14,379		17,403
Depreciation and amortization	22,284		20,692		42,701		41,177
Amortization of costs to implement cloud computing arrangements	961		668		1,857		1,277
Share-based expense	15,762		11,326		30,328		22,442
Organizational transformation	—		3,925		—		5,119
Restructuring activities	1,361		—		2,655		—
Other non-recurring items	563		2,549		2,454		3,905
Adjusted EBITDA	$	48,805	$	41,544	$	96,972	$	80,381

39

Liquidity and Capital Resources

Overview

For the six months ended June 30, 2021, we had higher net cash from operations compared to the prior year due to higher gross profit dollars during the current year. We expect to continue to balance efforts to grow our revenue with seeking to consistently achieve operating profitability. To grow our revenue, we continue to make investments in growth initiatives, marketing, applications development, network quality and expansion, and customer care. We believe that cash flow from operations and cash on hand will fund our operations for at least the next twelve months.

The following table sets forth a summary of our cash flows for the periods indicated:

	Six Months Ended
	June 30,
(in thousands)	2021		2020		Dollar Change
Net cash provided by operating activities	$	89,521	$	38,803	$	50,718
Net cash used in investing activities	(29,216)		(25,244)		(3,972)
Net cash (used in) provided by financing activities	(62,241)		12,064		(74,305)
Effect of exchange rate changes on cash and cash equivalents	(987)		(1,647)		660

Operating Activities

The following table describes the changes in cash provided by operating activities for the six months ended June 30, 2021 as compared to the six months ended June 30, 2020:

	(in thousands)
Increase in operating income adjusted for non-cash items primarily due to increased gross margin driven by growth within VCP during the quarter	$	23,763
Increase in working capital driven primarily by timing of vendor payments, prepayments for annual licenses and improvement in operating cash flows as a result of benefits under the CARES Act.	26,955
Increase in cash provided by operating activities	$	50,718

Investing Activities

The following table describes the changes in cash used in investing activities for the six months ended June 30, 2021 as compared to the six months ended June 30, 2020:

	(in thousands)
Increase in payments to acquire and develop software assets	(4,180)
Decrease in payments related to capital expenditures	131
Decrease in payments to acquire new patents on our developed technology	77
Increase in cash used in investing activities	$	(3,972)

Financing Activities

The following table describes the changes in cash (used in) provided by financing activities for the six months ended June 30, 2021 as compared to the six months ended June 30, 2020:

	(in thousands)
Decreased borrowings net of repayments during the current year	$	(70,000)
Increase in payments associated with taxes on share based compensation due to higher vesting and stock price in 2021	(4,954)
Increase in proceeds received from exercise of stock options due to fewer exercises in 2020	649
Decrease in cash (used in) provided by financing activities	$	(74,305)

40

Sources of Liquidity

The principal sources of liquidity are derived from available borrowings under our existing financing arrangements, existing cash on hand, and cash flows from operations. As described in Note 6, Long-Term Debt, to the Condensed Consolidated Financial Statements, the Company's financing arrangements consist of its Convertible Senior Notes and the 2018 Credit Facility comprised of a $100,000 term note and a $500,000 revolving credit facility. The COVID-19 pandemic has caused disruption in global capital markets. This could result in future financing becoming more difficult or expensive to obtain or the Company may not be able to obtain financing on acceptable terms or at all.

We maintain significant availability under our lines of credit to meet our short-term liquidity requirements. As of June 30, 2021, amounts available under the 2018 Credit Facility totaled $329.5 million.

Uses of Liquidity

The Company's requirements for liquidity and capital resources are generally for the purposes of operating activities, debt service obligations, restructuring initiatives, and capital expenditures. For the six months ended June 30, 2021, capital expenditures were primarily for the implementation of software solutions and purchase of network equipment as we continue to expand our network. Our capital expenditures for the six months ended June 30, 2021, were $29,216, of which $24,379 was for software acquisition and development. The majority of these expenditures are comprised of investments in information technology and systems infrastructure, including an electronic data warehouse, online customer service, and customer management platforms. For full year 2021, we estimate our capital and software expenditures will be approximately $65 million.

State and Local Sales Taxes

We have contingent liabilities for state and local sales taxes. As of June 30, 2021, we had a reserve of $9,601. If our ultimate liability exceeds this amount, it could affect our liquidity unfavorably. However, we do not believe it will significantly impair our liquidity.

Off-Balance Sheet Arrangements

Obligations under Certain Guarantee Contracts

We enter guarantee arrangements in the normal course of business to facilitate transactions with third parties. These arrangements include financial and performance guarantees, stand-by letters of credit, debt guarantees and indemnifications. As of June 30, 2021 and December 31, 2020 we had stand-by letters of credit of $1,502, respectively.

Contractual Obligations and Commitments

Except as set forth below and in Note 9. Commitments and Contingencies included in Part 1, Item 1 of this Form 10-Q, there were no significant changes in our commitments under contractual obligations as disclosed in the Company's Annual Report on Form 10-K for the year ended December 31, 2020.

Contingencies

From time to time we are subject to legal proceedings, claims and investigations relating to our business, including claims of alleged infringement of commercial, employment, intellectual property rights, and other matters. From time to time, we receive letters or other communications from third parties inviting us to obtain patent licenses that might be relevant to our business or alleging that our services infringe upon third-party patents or other intellectual property. In accordance with generally accepted accounting principles, we make a provision for a loss when it is both probable that a liability has been incurred and the amount of the loss or range of loss can be reasonably estimated. Such legal proceedings are inherently unpredictable and subject to further uncertainties. Should any of these estimates and assumptions change it is possible that the resolution of the matters described in Note 9, Commitments and Contingencies included in Part 1, Item 1 of this Form 10-Q could have a material adverse effect on our condensed consolidated financial position, cash flows or results of operations.

41

Critical Accounting Policies

Our consolidated financial statements and accompanying notes are prepared in accordance with U.S. GAAP. Our significant accounting policies are described in Note 2, Summary of Significant Accounting Policies to the consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2020. The preparation of financial statements and related disclosures in compliance with GAAP requires management to make estimates and assumptions that affect the reported amount of assets, liabilities, revenues and expenses as well as the disclosure of contingent assets and liabilities. The application of these policies involves judgment regarding future events and these judgments could materially affect the financial statements and disclosures based on varying assumptions.

We identify our most critical accounting policies as those that are the most pervasive and important to the portrayal of our financial position and results of operations, and those that require the most difficult, subjective or complex judgments by management regarding estimates. Our critical accounting policies include revenue recognition, valuation of goodwill and intangible assets, income taxes and capitalized software. As of June 30, 2021, our goodwill is attributable to our VCP operating segment. We perform our annual test of goodwill on October 1st. Additionally, we will assess our goodwill for impairment between annual tests when specific circumstances dictate.

COVID-19 has created and may continue to create uncertainty in bookings and customer payments, reduced usage, and issuance of customer credits to distressed customers served by certain product lines. As of the date of our condensed consolidated financial statements, we are not aware of any specific event or circumstance that would require us to update our estimates or judgments. However, these estimates may change as new events occur and additional information is obtained, which may result in changes being recognized in our condensed consolidated financial statements in future periods. In particular and in light of the COVID-19 pandemic, the assumptions and estimates associated with collectability assessment of revenue and credit losses of accounts receivable may have a material impact our consolidated financial statements in future periods, depending on the duration or degree of the impact of the COVID-19 pandemic on the global economy.

42

Item 3. Quantitative and Qualitative Disclosures about Market Risk

We are exposed to financial market risks, including changes in currency exchange rates and interest rates.

Foreign Exchange Risk

We sell our products and services primarily in the United States, Canada, the European Union, and Asia. A portion of our sales denominated in Euros, the Canadian Dollar, and the British Pound Sterling, which are affected by changes in currency exchange rates. Our financial results could be affected by changes in foreign currency exchange rates, although foreign exchange risks have not been material to our financial position or results of operations to date.

On January 31, 2020, the United Kingdom officially withdrew from the European Union or , "EU". The 11-month transition period ended on. December 31, 2020. As of January 1, 2021, the UK is no longer inside the EU's Single Market and Customs Union and is free to implement trade deals struck with third countries. Uncertainty and currency volatility in the British Pound Sterling exchange rate is expected to continue.

Interest Rate and Debt Risk

Our exposure to market risk for changes in interest rates primarily relates to our long-term debt.

As of June 30, 2021, if the interest rate on our variable rate debt changed by 1% on our 2018 Revolving Credit Facility, our annual debt service payment would change by approximately $1,705.

As of June 30, 2021, we had $345.0 million outstanding on our 1.75% convertible senior notes due 2024. The Notes have 1.75% percent fixed annual interest rates and, therefore, our economic interest rate exposure on our convertible senior notes is fixed. However, the values of the convertible senior notes are exposed to interest rate risk. Generally, the fair market value of our fixed interest rate convertible senior notes will increase as interest rates fall and decrease as interest rates rise. In addition, the fair values of the convertible senior notes are affected by our stock price. The fair value of the convertible senior notes will generally increase as our common stock price increases and will generally decrease as our common stock price declines in value. Additionally, we carry the convertible senior notes at face value less unamortized discount on our balance sheet, and we present the fair value for required disclosure purposes only.

Item 4. Controls and Procedures

Evaluation of Disclosure Controls and Procedures. Based on the evaluation of our disclosure controls and procedures (as defined in Securities Exchange Act of 1934 Rules 13a-15(e) and 15d-15(e)) required by Securities Exchange Act Rules 13a-15(b) or 15d-15(b), our Chief Executive Officer and our Chief Financial Officer have concluded that, as of the end of the period covered by this report, our disclosure controls and procedures were effective.

Changes in Internal Controls. There were no changes in our internal control over financial reporting that occurred during our most recent fiscal quarter that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting. In response to COVID-19, we have undertaken measures to protect our employees, partners, and clients, including encouraging employees to work remotely. These measures have compelled us to modify some of our control procedures, however, those modifications have so far not been material. We are continually monitoring and assessing the COVID-19 situation in order to minimize the impact on the design, implementation, and operating effectiveness of our internal controls.

43

Part II—Other Information

Item 1. Legal Proceedings

We are subject to a number of lawsuits, government investigations and claims arising out of the conduct of our business. See a discussion of our litigation matters in Note 9 of Notes to our Condensed Consolidated Financial Statements, which is incorporated herein by reference.

Item 1A. Risk Factors

Other than the risk factor set forth below, there have been no material changes from the risk factors previously disclosed in Item 1A of our Annual Report on Form 10-K for the fiscal year ended December 31, 2020 and our Quarterly Report on Form 10-Q for the quarter ended June 30, 2021.

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

Not applicable.

Item 3. Defaults Upon Senior Securities

None.

Item 4. Mine Safety Disclosures

Not applicable. 

Item 5. Other Information

None.

Item 6. Exhibits

See accompanying Exhibit Index for a list of the exhibits filed or furnished with this Quarterly Report on Form 10-Q.

EXHIBIT INDEX

31.1	Certification of the Company’s Chief Executive Officer pursuant to Securities Exchange Act Rules 13a-14(a) and 15d-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002*
31.2	Certification of the Company’s Chief Financial Officer pursuant to Securities Exchange Act Rules 13a-14(a) and 15d-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002*
32.1	Certification of the Company’s Chief Executive Officer and Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002*
101	The following financial information from Vonage Holdings Corp.'s Quarterly Report on Form 10-Q for the quarter ended June 30, 2021 formatted in Inline XBRL (Extensible Business Reporting Language) includes: (i) the Condensed Consolidated Balance Sheets, (ii) the Condensed Consolidated Statements of Operations, (iii) the Condensed Consolidated Statements of Comprehensive (Loss) Income, (iv) the Condensed Consolidated Statements of Cash Flows, (v) the Condensed Consolidated Statements of Stockholders Equity, and (vi) Notes to the Condensed Consolidated Financial Statements.
104	Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)

* Filed herewith.

44

SIGNATURE

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

		VONAGE HOLDINGS CORP.
Dated:	August 5, 2021	By:	/s/ Stephen Lasher
			Stephen Lasher Chief Financial Officer (Principal Financial Officer and Duly Authorized Officer)

45

EX-31.1

EXHIBIT 31.1

CERTIFICATION

PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Rory Read, certify that:

1.     I have reviewed this quarterly report on Form 10-Q of Vonage Holdings Corp.;

2.     Based on my knowledge, this report does not contain any untrue statement of 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 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 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 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 5, 2021	/s/    Rory Read
		Rory Read
		Chief Executive Officer

EX-31.2

EXHIBIT 31.2

CERTIFICATION

PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Stephen Lasher, certify that:

1.    I have reviewed this quarterly report on Form 10-Q of Vonage Holdings Corp.;

2.    Based on my knowledge, this report does not contain any untrue statement of 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 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 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 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 5, 2021	/s/ Stephen Lasher
		Stephen Lasher Chief Financial Officer (Principal Financial Officer and Duly Authorized Officer)

EX-32.1

EXHIBIT 32.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER

PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I, Rory Read, certify to my knowledge pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Quarterly Report of Vonage Holdings Corp. on Form 10-Q for the quarterly period ended June 30, 2021 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that information contained in such Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of Vonage Holdings Corp.

Date:	August 5, 2021	/s/    Rory Read
		Rory Read
		Chief Executive Officer

I, Stephen Lasher, certify to my knowledge pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Quarterly Report of Vonage Holdings Corp. on Form 10-Q for the quarterly period ended June 30, 2021 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that information contained in such Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of Vonage Holdings Corp.

Date:	August 5, 2021	/s/ Stephen Lasher
		Stephen Lasher Chief Financial Officer (Principal Financial Officer and Duly Authorized Officer)

XML

Cover Page - shares	6 Months Ended
	Jun. 30, 2021	Jul. 30, 2021
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2021
Document Transition Report	false
Entity File Number	001-32887
Entity Registrant Name	VONAGE HOLDINGS CORP
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	11-3547680
Entity Address, Address Line One	23 Main Street
Entity Address, City or Town	Holmdel
Entity Address, State or Province	NJ
Entity Address, Postal Zip Code	07733
City Area Code	732
Local Phone Number	528-2600
Title of 12(b) Security	Common Stock, par value $0.001
Trading Symbol	VG
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		251,854,581
Amendment Flag	false
Entity Central Index Key	0001272830
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q2

XML

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 39,977	$ 43,078
Accounts receivable, net of allowance of $6,894 and $8,878, respectively	124,426	116,304
Deferred customer acquisition costs, current portion	20,631	18,161
Prepaid expenses	34,081	32,131
Other current assets	3,969	6,230
Total current assets	223,084	215,904
Property and equipment, net of accumulated depreciation of $123,290 and $117,761, respectively	28,244	31,621
Operating lease right-of-use assets	34,320	29,330
Goodwill	622,423	624,328
Software, net of accumulated amortization of $124,190 and $111,642, respectively	94,515	80,638
Deferred customer acquisition costs	70,719	67,529
Restricted cash	2,097	1,919
Intangible assets, net of accumulated amortization of $295,727 and $275,346, respectively	182,993	204,267
Deferred tax assets	104,752	106,374
Other assets	34,481	33,926
Total assets	1,397,628	1,395,836
Current liabilities:
Accounts payable	40,857	17,464
Accrued expenses	158,076	158,080
Deferred revenue, current portion	61,721	65,506
Operating lease liabilities, current portion	10,286	11,554
Total current liabilities	270,940	252,604
Indebtedness under revolving credit facility	170,500	215,500
Convertible senior notes, net	298,060	290,784
Operating lease liabilities	36,692	31,019
Other liabilities	3,379	3,155
Total liabilities	779,571	793,062
Commitments and Contingencies (Note 9)
Stockholders’ Equity:
Common stock, par value 0.001 per share; 596,950 shares authorized at June 30, 2021, and December 31, 2020	328	324
Additional paid-in capital	1,588,222	1,554,574
Accumulated deficit	(667,535)	(667,221)
Treasury stock, at cost	(339,024)	(320,891)
Accumulated other comprehensive income	36,066	35,988
Total stockholders’ equity	618,057	602,774
Total liabilities and stockholders’ equity	$ 1,397,628	$ 1,395,836

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Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Accounts Receivable, Allowance for Credit Loss	$ 6,894	$ 8,878
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	123,290	117,761
Capitalized Computer Software, Accumulated Amortization	124,190	111,642
Finite-Lived Intangible Assets, Accumulated Amortization	$ 295,727	$ 275,346
Common stock, par value (usd per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	596,950,000	596,950,000

XML

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]
Service, access and product revenues	$ 332,559	$ 296,516	$ 647,352	$ 579,593
USF revenues	18,910	14,017	37,017	28,397
Total revenues	351,469	310,533	684,369	607,990
Operating Expenses:
Service, access and product cost of revenues (excluding depreciation and amortization)	149,887	119,971	288,567	233,009
USF cost of revenues	18,910	14,017	37,017	28,397
Sales and marketing	86,215	90,827	167,689	176,448
Engineering and development	22,710	19,784	43,070	38,987
General and administrative	43,301	42,820	88,234	83,702
Depreciation and amortization	22,284	20,692	42,701	41,177
Total operating expenses	343,307	308,111	667,278	601,720
Income from operations	8,162	2,422	17,091	6,270
Other Income (Expense):
Interest expense	(7,081)	(9,321)	(14,379)	(17,403)
Other income (expense), net	(288)	(38)	(114)	191
Total other expense, net	(7,369)	(9,359)	(14,493)	(17,212)
Income (loss) before income taxes	793	(6,937)	2,598	(10,942)
Income tax expense	(731)	(1,493)	(2,912)	(1,243)
Net income (loss)	$ 62	$ (8,430)	$ (314)	$ (12,185)
Basic	$ 0	$ (0.03)	$ 0	$ (0.05)
Weighted-average common shares outstanding:
Basic	251,430	245,385	250,539	244,506
Diluted	$ 0	$ (0.03)	$ 0	$ (0.05)
Diluted	259,962	245,385	250,539	244,506

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Condensed Consolidated Statements of Comprehensive (Loss) / Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Other comprehensive income (loss):
Net income (loss)	$ 62	$ (8,430)	$ (314)	$ (12,185)
Foreign currency translation adjustment, net of tax expense (benefit) of $(462), $281, $831, and $(189), respectively	3,024	4,069	78	(19,558)
Unrealized loss on derivatives, net of tax expense (benefit) of $—, $46, —, and $(4), respectively	0	1,419	0	1,001
Total other comprehensive income (loss)	3,024	5,488	78	(18,557)
Comprehensive income (loss)	$ 3,086	$ (2,942)	$ (236)	$ (30,742)

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Condensed Consolidated Statements of Comprehensive (Loss) / Income Condensed Consolidated Statements of Comprehensive (Loss) / Income (Parenthetical) - 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]
Foreign currency translation adjustment, net of tax expense/(benefit)	$ (462)	$ 281	$ 831	$ (189)
Unrealized gain on derivatives, net of tax expense/(benefit)	$ 0	$ 46	$ 0	$ (4)

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Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash flows from operating activities:
Net loss	$ (314)	$ (12,185)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	21,098	12,967
Amortization of intangibles	21,603	28,210
Deferred income taxes	2,447	(1,952)
Amortization of deferred customer acquisition costs	9,808	7,567
Allowances for doubtful accounts	839	3,509
Amortization of financing costs and debt discount	7,682	7,367
(Gain) loss on disposal of property and equipment	(8)	740
Share-based expense	30,328	22,442
Changes in derivatives	0	1,055
Changes in operating assets and liabilities:
Accounts receivable	(10,920)	(16,927)
Prepaid expenses and other current assets	366	1,413
Deferred customer acquisition costs	(15,425)	(15,389)
Accounts payable and accrued expenses	26,758	(4,318)
Deferred revenue	(3,407)	6,533
Other assets - deferred cloud computing implementation costs	(1,946)	(3,013)
Other assets and liabilities	612	784
Net cash provided by operating activities	89,521	38,803
Cash flows used in investing activities:
Capital expenditures	4,724	4,855
Purchase of intangible assets	113	190
Acquisition and development of software assets	24,379	20,199
Net cash used in investing activities	(29,216)	(25,244)
Cash flows provided by (used in) financing activities:
Payments for short and long-term debt	(45,000)	(50,000)
Proceeds from issuance of long-term debt	0	75,000
Employee taxes paid on withholding shares	(18,133)	(13,179)
Proceeds from exercise of stock options	892	243
Net cash (used in) provided by financing activities	(62,241)	12,064
Effect of exchange rate changes on cash	(987)	(1,647)
Net (decrease) increase in cash, cash equivalents, and restricted cash	(2,923)	23,976
Cash, cash equivalents, and restricted cash, beginning of period	44,997	25,635
Cash, cash equivalents, and restricted cash, end of period	42,074	49,611
Interest	6,661	8,856
Income taxes	(1,677)	(2,766)
Acquisition of long-term assets included in accounts payable and accrued expenses	2,526	1,980
Share-based compensation capitalized in internally developed software costs	$ 2,432	$ 1,905

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Condensed Consolidated Statement of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Treasury Stock	Accumulated Other Comprehensive Income
Beginning Balance at Dec. 31, 2019	$ 567,062	$ 316	$ 1,494,469	$ (631,009)	$ (306,043)	$ 9,329
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock option exercises	243	4	239
Share-based expense	24,347		24,347
Employee taxes paid on withholding shares	(13,271)				(13,271)
Foreign currency translation adjustment	(19,558)					(19,558)
Unrealized (loss) gain on derivatives	1,001					1,001
Net income (loss)	(12,185)			(12,185)
Ending Balance at Jun. 30, 2020	547,639	320	1,519,055	(643,194)	(319,314)	(9,228)
Beginning Balance at Mar. 31, 2020	538,713	320	1,506,664	(634,764)	(318,791)	(14,716)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock option exercises	88		88
Share-based expense	12,303		12,303
Employee taxes paid on withholding shares	(523)				(523)
Foreign currency translation adjustment	4,069					4,069
Unrealized (loss) gain on derivatives	1,419					1,419
Net income (loss)	(8,430)			(8,430)
Ending Balance at Jun. 30, 2020	547,639	320	1,519,055	(643,194)	(319,314)	(9,228)
Beginning Balance at Dec. 31, 2020	602,774	324	1,554,574	(667,221)	(320,891)	35,988
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock option exercises	892	4	888
Share-based expense	32,760		32,760
Employee taxes paid on withholding shares	(18,133)				(18,133)
Foreign currency translation adjustment	78					78
Unrealized (loss) gain on derivatives	0
Net income (loss)	(314)			(314)
Ending Balance at Jun. 30, 2021	618,057	328	1,588,222	(667,535)	(339,024)	36,066
Beginning Balance at Mar. 31, 2021	599,265	327	1,571,025	(667,597)	(337,532)	33,042
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock option exercises	270	1	269
Share-based expense	16,928		16,928
Employee taxes paid on withholding shares	(1,492)				(1,492)
Foreign currency translation adjustment	3,024					3,024
Unrealized (loss) gain on derivatives	0
Net income (loss)	62			62
Ending Balance at Jun. 30, 2021	$ 618,057	$ 328	$ 1,588,222	$ (667,535)	$ (339,024)	$ 36,066

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Nature of Business

6 Months Ended

Jun. 30, 2021

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Nature of Business

Nature of Business

Nature of Operations

Vonage Holdings Corp. (“Vonage”, “Company”, “we”, “our”, “us”) is incorporated as a Delaware corporation. At Vonage, our vision is to accelerate the world's ability to connect. We are observing a secular change in the way business is done, with a fundamental shift in how communications technologies are being leveraged in almost every industry. Through the Vonage Communications Platform, our strategy is to deliver a single leading cloud communications platform that powers our customers' and partners' global engagement solutions using our APIs, Unified Communications, and Contact Center innovations. We believe that the Vonage Communications Platform's products and services are well positioned to take advantage of emerging trends with sizable, growing total addressable markets as companies look to cloud-based communications solutions and API programming architectures as part of their digital transformation.

Our strategic business is the Vonage Communications Platform which delivers a single leading cloud communications platform that powers our customers' and partners' global engagement solutions using our APIs, Unified Communications, and Contact Center innovations. The Vonage Communications Platform brings unique value to businesses by providing multiple communications channels - including video, voice, messaging, email, verification, and artificial intelligence - that integrate into the applications, products and workflows that our customers are already using. We believe this delivers both the power and the flexibility to our customers to address the growing need to transform their communications, connections and experiences for customers and enables the type of business continuity, remote work, and remote delivery of services that are now essential for team members.

For our Consumer customers, we enable users to access and utilize our services and features, via their existing internet connections, including over 3G/4G, LTE, Cable, or DSL broadband networks. This technology enables us to offer our Consumer customers attractively priced voice and messaging services and other features around the world on a variety of devices. Our Consumer strategy is focused on the continued penetration of our core North American markets, which provide value in international long distance and target under-served segments.

Customers in the United States represented 64% and 68% of our consolidated revenues for the three months ended June 30, 2021 and 2020 65% and 69% for the six months ended June 30, 2021 and 2020, respectively, with the balance in Canada, the United Kingdom, China, Singapore, Netherlands, and other countries around the world.

Unaudited Interim Financial Information

The accompanying unaudited interim condensed consolidated financial statements and information have been prepared in accordance with accounting principles generally accepted in the United States and in accordance with the SEC's regulations for interim financial information and with the instructions for Form 10-Q. Accordingly, they do not include all of the information and disclosures required by accounting principles generally accepted in the United States for complete financial statements. In the opinion of management, these financial statements contain all normal and recurring adjustments considered necessary to present fairly the Company's financial position, results of operations, comprehensive income, cash flows, and stockholders’ equity for the periods presented. The results for the six months ended June 30, 2021 are not necessarily indicative of the results to be expected for the full year.

These unaudited interim condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and related notes included in our Annual Report on Form 10-K for the year ended December 31, 2020 filed with the Securities and Exchange Commission on February 19, 2021.

Use of Estimates

Our condensed consolidated financial statements and notes thereof are prepared in conformity with accounting principles generally accepted in the United States, which require management to make estimates and assumptions that affect the amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates, including uncertainty in the economic environment due to the ongoing outbreak of the novel coronavirus COVID-19.

We base our estimates on historical experience, available market information, appropriate valuation methodologies, and on various other assumptions that we believe to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities. Estimates are used for such items as depreciable lives for long-lived assets including intangible assets, tax provisions, uncollectible accounts, and assets and liabilities assumed in business combinations, among others. In addition, estimates are used to test long-lived assets and goodwill for impairment.

COVID-19 has created and may continue to create uncertainty in customer payments, reduced usage, and issuance of customer credits to distressed customers served by certain product lines. As of the date of our condensed consolidated financial statements, we are not aware of any specific event or circumstance that would require us to materially update our estimates or judgments. However, these estimates may change as new events occur and additional information is obtained, which may result in changes being recognized in our condensed consolidated financial statements in future periods. In particular and in light of the COVID-19 pandemic, the assumptions and estimates associated with collectability assessment of revenue and credit losses of accounts receivable may have a material impact our consolidated financial statements in future periods, depending on the continued duration or degree of the impact of the COVID-19 pandemic on the global economy.

Reclassifications

Reclassifications have been made to our condensed consolidated financial statements for the prior year periods to conform to classifications used in the current year periods. The reclassifications did not affect results of operations, net assets or cash flows.

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Summary of Significant Accounting Policies

6 Months Ended

Jun. 30, 2021

Accounting Policies [Abstract]

Significant Accounting Policies

Summary of Significant Accounting Policies

This footnote should be read in conjunction with the complete description of our significant accounting policies under Note 2, Summary of Significant Accounting Policies to the consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2020.

Service, Access, and Product Cost of Revenues

Service, access, and product cost of revenues excludes depreciation and amortization expense of $15,515 and $11,148 for the three months ended June 30, 2021 and 2020 and $29,162 and $22,304 for the six months ended June 30, 2021 and 2020, respectively. In addition, costs of goods sold included service, access, and product cost of revenues during the three months ended June 30, 2021 and 2020 were $4,306 and $2,419 and during the six months ended June 30, 2021 and 2020 were $6,885 and $6,095, respectively.

Sales and Marketing Expenses

We incurred advertising costs, which are included in sales and marketing of $12,809 and $14,290 for the three months ended June 30, 2021 and 2020 and $22,466 and $23,750 for the six months ended June 30, 2021 and 2020, respectively.

Fair Value of Financial Instruments

Certain of the Company's other financial instruments, which include cash and cash equivalents, restricted cash, accounts receivable and accounts payable, approximate fair value due to their short-term nature and as such are classified as Level 1. We believe the fair value of our 2018 Credit Facility at June 30, 2021 and December 31, 2020 was approximately the same as its carrying amount as the facility bears interest at a variable rate indexed to current market conditions and is classified as Level 2 within the fair value hierarchy.

As of June 30, 2021 and December 31, 2020, the fair value of the 1.75% convertible senior notes due 2024 (the “Convertible Senior Notes”) was approximately $385,538 and $373,373, respectively. The fair value was determined based on the quoted price for the Convertible Senior Notes in an inactive market on the last trading day of the reporting period and is classified as Level 2 in the fair value hierarchy.

We account for financial assets using a framework that establishes a hierarchy that ranks the quality and reliability of the inputs, or assumptions, we use in the determination of fair value, and we classify financial assets and liabilities carried at fair value in one of the following three categories:

•Level 1 - quoted prices (unadjusted) in active markets that are accessible at the measurement date for identical assets and liabilities. The fair value hierarchy gives the highest priority to Level 1 inputs.

•Level 2 - observable prices that are based on inputs not quoted on active markets but corroborated by market data; and

•Level 3 - unobservable inputs when there is little or no market data available, thereby requiring an entity to develop its own assumptions. The fair value hierarchy gives the lowest priority to Level 3 inputs.

Supplemental Balance Sheet Information

The following table provides a reconciliation of cash and cash equivalents and restricted cash reported within the consolidated balance sheets to amounts included in the consolidated statements of cash flows:

	As of June 30,				As of December 31,
	2021		2020		2020		2019
Cash and cash equivalents	$	39,977	$	47,565	$	43,078	$	23,620
Restricted cash	2,097		2,046		1,919		2,015
Total cash, cash equivalents and restricted cash	$	42,074	$	49,611	$	44,997	$	25,635

The following tables provides supplemental information of intangible assets and accrued expenses within the consolidated balance sheets:

Intangible assets, net

	June 30, 2021						December 31, 2020
	Gross Carrying Value		Accumulated Amortization		Net Carrying Value		Gross Carrying Value		Accumulated Amortization		Net Carrying Value
Customer relationships	$	283,102	$	(160,231)	$	122,871	$	284,692	$	(150,094)	$	134,598
Developed technology	174,132		(114,663)		59,469		173,572		(104,468)		69,104
Patents and patent licenses	20,967		(20,314)		653		20,849		(20,284)		565
Trade names	519		(519)		—		500		(500)		—
Total intangible assets	$	478,720	$	(295,727)	$	182,993	$	479,613	$	(275,346)	$	204,267

Accrued expenses

	June 30, 2021		December 31, 2020
Compensation and related taxes and temporary labor	$	42,052	$	43,580
Marketing	20,499		15,319
Taxes and fees	24,313		25,977
Telecommunications	55,165		52,975
Severance	671		3,594
Interest	857		847
Customer credits	3,273		4,738
Professional fees	3,003		1,953
Inventory	1,104		659
Other accruals	7,139		8,438
Accrued expenses	$	158,076	$	158,080

In the second half of 2020, the Company initiated a business-wide optimization and alignment project to focus the Company's resources and drive stronger operational execution. In connection with this project, the Company incurred severance costs of $2,655 during the six months ended June 30, 2021, related to further employee exits, which was included in general and administrative expense.

Goodwill

The Company's goodwill is derived primarily from the acquisitions of Vocalocity, Telesphere, iCore, Simple Signal, Nexmo, TokBox, and NewVoiceMedia which are included in the Company's Vonage Communications Platform segment. The following table provides a summary of the changes in the carrying amounts of goodwill:

Balance at December 31, 2020	$	624,328
Foreign currency translation adjustment	(1,905)
Balance at June 30, 2021	$	622,423

Recent Accounting Pronouncements

In August 2020, the FASB issued ASU 2020-06, "Debt - Debt with Conversion Options (Subtopic 470-20) and Derivatives and Hedging - Contracts in Entity's Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity's Own Equity". This ASU simplifies the accounting for certain convertible instruments such that the embedded conversion features are no longer separated from the host contract for convertible instruments with conversion features that are not required to be accounted for as derivatives under ASC 815, or that do not result in substantial premiums accounted for as paid-in-capital. As a result, more convertible debt instruments will be accounted for as a single liability measured at its amortized cost. In addition, the ASU requires the use of the if-converted method to be applied to convertible instruments when calculating earnings per share. The ASU is effective for fiscal years beginning after December 15, 2021, including interim periods within those fiscal years, using either a modified retrospective or a full retrospective approach. Early adoption is permitted for fiscal years beginning after December 15, 2020. The Company is currently evaluating the impact of this standard on our consolidated financial statements.

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Revenue Recognition

6 Months Ended

Jun. 30, 2021

Revenue from Contract with Customer [Abstract]

Revenue Recognition

Revenue Recognition

The Company recognizes revenue in accordance with ASC Topic 606, Revenue from Contracts with Customers which is further described in Note 2, Summary of Significant Accounting Policies and Note 3, Revenue Recognition to the consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2020.

Disaggregation of Revenue

The following tables detail our revenue from customers disaggregated by primary geographical market and source of revenue. The tables also include a reconciliation of the disaggregated revenue for our Vonage Communications Platform, or VCP, and Consumer segments.

	Three Months Ended						Three Months Ended
	June 30, 2021						June 30, 2020
	VCP		Consumer		Total		VCP		Consumer		Total
Primary geographical markets
Americas	$	155,524	$	72,588	$	228,112	$	136,346	$	81,859	$	218,205
EMEA	68,526		2,468		70,994		53,051		2,425		55,476
APAC	52,363		—		52,363		36,852		—		36,852
	$	276,413	$	75,056	$	351,469	$	226,249	$	84,284	$	310,533
Major Sources of Revenue
Service revenues	$	260,452	$	63,289	$	323,741	$	212,310	$	75,045	$	287,355
Access and product revenues	8,765		53		8,818		9,109		52		9,161
USF revenues	7,196		11,714		18,910		4,830		9,187		14,017
	$	276,413	$	75,056	$	351,469	$	226,249	$	84,284	$	310,533
	Six Months Ended						Six Months Ended
	June 30, 2021						June 30, 2020
	VCP		Consumer		Total		VCP		Consumer		Total
Primary geographical markets
Americas	$	305,596	$	147,520	$	453,116	$	265,725	$	166,432	$	432,157
EMEA	131,361		4,982		136,343		102,268		5,056		$	107,324
APAC	94,910		—		94,910		68,509		—		$	68,509
	$	531,867	$	152,502	$	684,369	$	436,502	$	171,488	$	607,990
Major Sources of Revenue
Service revenues	$	500,894	$	128,986	$	629,880	$	407,959	$	152,288	$	560,247
Access and product revenues	17,363		109		17,472		19,231		115		19,346
USF revenues	13,610		23,407		37,017		9,312		19,085		28,397
	$	531,867	$	152,502	$	684,369	$	436,502	$	171,488	$	607,990

In addition, the Company recognizes service revenues from its customers through subscription services provided or through usage or pay-per-use type arrangements. During the three and six months ended June 30, 2021, the Company recognized $149,237 and $299,690 related to subscription services, $149,996 and $283,648 related to usage, and $52,236 and $101,031 related to other revenues such as USF, other regulatory fees, and credits. During the three and six months ended June 30, 2020, the Company recognized $154,127 and $310,582 related to subscription services, $111,379 and $204,426 related to usage, and $45,027 and $92,982 related to other revenues such as USF, other regulatory fees, and credits.

Contract Assets and Liabilities

The following table provides information about receivables and contract liabilities from contracts with customers:

	June 30, 2021		December 31, 2020
Receivables (1)	$	124,426	$	116,304
Contract liabilities (2)	61,721		65,506

(1) Amounts included in accounts receivables on our condensed consolidated balance sheets.

(2) Amounts included in deferred revenues on our condensed consolidated balance sheet.

Our deferred revenue represents the advance consideration received from customers for subscription services and is predominantly recognized over the following month as transfer of control occurs. During the three and six months ended June 30, 2021, the Company recognized revenue of $105,659 and $211,696, respectively. During the three and six months ended June 30, 2020, the Company recognized revenue of $109,511 and $218,386, respectively, related to its contract liabilities. We expect to recognize $61,721 into revenue over the next twelve months related to our deferred revenue as of June 30, 2021.

Remaining Performance Obligation

Transaction price allocated to the remaining performance obligation represents contracted revenue that has not yet been recognized. The typical subscription term may range from 1 month to 3 years. Contracted revenue as of June 30, 2021 that has not yet been recognized was approximately $0.4 billion. This excludes contracts with an original expected length of less than one year. The Company expects to recognize the majority of its remaining performance obligation over the next 18 months.

Contract Acquisition Costs

We have various commission programs for internal sales personnel and channel partners that are incremental to the acquisition of customer contracts. These costs are recorded as deferred contract acquisition costs on the consolidated balance sheets which eligible employees and third parties may earn a commission on sales of services and products to customers. We expect that these commission fees are recoverable and, therefore, we have capitalized $91,350 and $85,690 as contract costs, net of accumulated amortization, as of June 30, 2021 and December 31, 2020, respectively, included within deferred customer acquisitions costs, current portion and deferred customer acquisition costs on our condensed consolidated balance sheets. Capitalized commission fees are amortized to sales and marketing expense over estimated customer life, which is 7 years for Vonage Communications Platform customers. The amounts amortized to sales and marketing expense were $5,046 and $9,808 for the three and six months ended June 30, 2021and $3,906 and $7,567 for the three and six months ended June 30, 2020, respectively. There were no impairment losses recognized in relation to the costs capitalized during the six months ended June 30, 2021 and 2020. In addition, the Company expenses sales commissions for commission plans related to customer arrangements deemed less than a year and for residuals and renewals.

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Earnings Per Share

6 Months Ended

Jun. 30, 2021

Earnings Per Share [Abstract]

Earnings Per Share

Earnings Per Share

The following table sets forth the computation for basic and diluted loss per share for the three and six months ended June 30, 2021 and 2020:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2021		2020		2021		2020
Numerator
Net income (loss)	$	62	$	(8,430)	$	(314)	$	(12,185)
Denominator
Weighted average common shares outstanding for basic and diluted net loss per share	251,430		245,385		250,539		244,506
Dilutive effect of stock options and restricted stock units	8,532		—		—		—
Diluted weighted average common shares outstanding	259,962		245,385		250,539		244,506
Basic income (loss) per share
Basic income (loss) per share	$	—	$	(0.03)	$	—	$	(0.05)
Diluted income (loss) per share
Diluted income (loss) per share	$	—	$	(0.03)	$	—	$	(0.05)

For the three and six months ended June 30, 2021 and 2020, the following were excluded from the calculation of diluted loss per common share because of their anti-dilutive effects: 

	Three Months Ended		Six Months Ended
	June 30,		June 30,
	2021	2020	2021	2020
Restricted stock units	7,456	12,409	15,129	12,409
Stock options	449	4,777	1,308	4,777
	7,905	17,186	16,437	17,186

As the Company expects to settle the principal amount of its outstanding convertible senior notes in cash and any excess in cash or shares of the Company’s common stock, the Company uses the treasury stock method for calculating any potential dilutive effect of the conversion spread on diluted net income per share, if applicable. The conversion spread will have a dilutive impact on diluted net income per share of common stock when the average market price of the Company’s common stock for a given period exceeds the conversion price of $16.72 per share. The Company's Convertible Senior Notes are further described in Note 6, Long-Term Debt.

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Incomes Taxes

6 Months Ended

Jun. 30, 2021

Income Tax Disclosure [Abstract]

Income Tax Disclosure

Income Taxes

The income tax consisted of the following:

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2021			2020			2021			2020
Income (loss) before income taxes	$	793		$	(6,937)		$	2,598		$	(10,942)
Income tax expense	(731)			(1,493)			(2,912)			(1,243)
Effective tax rate	92.2		%	21.5		%	112.1		%	11.4		%

Generally, provisions for income taxes during interim reporting periods apply an estimate of the annual effective tax rate for the full year. The provision for income taxes will vary with levels of pre-tax income (loss) and non-deductible expenses, NOL valuation allowances and other permanent non-deductible charges which can cause the rate to fluctuate from quarter to quarter. An alternative approach may be recorded under a discrete method which applies actual adjustments for the period including specific permanent adjustments and geographic distribution of our pre-tax income (loss). The discrete method was determined to be the appropriate method for calculating the interim tax provision as using the estimated annual effective tax rate method would have produced an unreliable rate stemming from an estimated annual marginal loss and large permanent adjustments.

During the current quarter, the UK government enacted a tax rate increase from 19% to 25% effective April 1, 2023. As such, the Company has updated its deferred tax asset to reflect the increase in rate and recorded a benefit of $253 during the three months ended June 30, 2021.

For the three and six months ended June 30, 2021, our effective tax rate was different than the statutory rate primarily due to an increase in permanent items related to limitations on executive compensation, the inclusion of foreign income in the U.S. due to foreign disregarded entities, and limitation on foreign losses.

For the three and six months ended June 30, 2020, our effective tax rate was different than the statutory rate primarily due to a discrete period tax benefit of $2,019 during the first half of the year which was recognized related to excess tax benefits on equity compensation. In addition, the Company’s actual effective tax rate for the current year has been impacted due to limitations on executive compensation and inclusion of income in the U.S. due to foreign disregarded entities compared to the overall pretax loss for the quarter.

Uncertain Tax Positions

The Company had uncertain tax benefits of $778 and $632 as of June 30, 2021 and December 31, 2020, respectively. The Company recognizes interest and penalties related to uncertain tax benefits in income tax expense. The Company incurred interest expense and penalties of $65 and $67 during the three and six months ended June 30, 2021. The Company did not incur any interest and penalties during both the three and six months ended June 30, 2020, respectively. The following table reconciles the total amounts of uncertain tax benefits:

	June 30, 2021		December 31, 2020
Balance as of January 1	$	632	$	914
Increase due to current year positions	375		114
Increase due to prior year positions	6		—
Decrease due to settlements and payments	(241)		(173)
Decrease due to lapse of applicable statute of limitations	—		(238)
(Decrease) increase due to foreign currency fluctuation	6		15
Uncertain tax benefits as of the end of the period	$	778	$	632

Net Operating Loss Carry Forwards As of June 30, 2021, the Company has U.S. Federal and state NOL carryforwards of $410,731 and $207,769, respectively, which expire at various times through 2037. We have non-US NOLs of $159,152 primarily related to the United Kingdom which has no expiration date.

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Long-Term Debt

6 Months Ended

Jun. 30, 2021

Debt Disclosure [Abstract]

Long-Term Debt

Long-Term Debt

This footnote should be read in conjunction with the complete description of our financing arrangements under Note 8, Long-Term Debt, to the consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2020.

The following table summarizes the Company's long-term debt as of June 30, 2021 and December 31, 2020:

	June 30, 2021		December 31, 2020
Revolving credit facility - due 2023	170,500		215,500
Convertible senior notes - due 2024	345,000		345,000
Long-term debt including current maturities	515,500		560,500
Less unamortized discount	42,224		48,702
Less debt issuance costs	4,716		5,514
Total long-term debt	$	468,560	$	506,284

Convertible Senior Notes

In June 2019, the Company issued $300.0 million aggregate principal amount of 1.75% convertible senior notes due 2024 in a private placement and an additional $45.0 million aggregate principal amount of such notes pursuant to the exercise in full of the over-allotment option of the initial purchasers (collectively, "Convertible Senior Notes"). The Convertible Senior Notes are the Company's senior unsecured obligations. The Convertible Senior Notes will mature on June 1, 2024, unless earlier redeemed, repurchased or converted. We may not redeem the notes prior to June 5, 2022.

Each $1,000 principal amount of the Convertible Senior Notes is initially convertible into 59.8256 shares of the Company's common stock, which is equivalent to an initial conversion price of approximately $16.72 per share. The conversion rate is subject to adjustment upon the occurrence of certain specified events but will not be adjusted for any accrued and unpaid interest. In addition, upon the occurrence of a make-whole fundamental change or a redemption period, each as defined in the indenture setting forth the terms of the Convertible Senior Notes, the Company will, in certain circumstances, increase the conversion rate by a number of additional shares for a holder that elects to convert its Convertible Senior Notes in connection with such make-whole fundamental change or during the relevant redemption period.

Prior to December 1, 2023, the notes will be convertible only upon satisfaction of certain conditions and during certain periods, and thereafter, at any time until the close of business on the second scheduled trading day immediately preceding the maturity date. We will satisfy any conversion election by paying or delivering, as the case may be, cash, shares of common stock or a combination of cash and shares of common stock. During the six months ended June 30, 2021, the conditions allowing holders of the Convertible Senior Notes to convert were not met.

The net carrying amount of the liability component of the Convertible Senior Notes was as follows:

	June 30, 2021
Principal	$	345,000
Unamortized discount	(42,224)
Unamortized issuance cost	(4,716)
Net carrying amount	$	298,060

The following table sets forth the interest expense recognized related to the Convertible Senior Notes:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2021		2020		2021		2020
Contractual interest expense	$	1,510	$	1,509	$	3,019	$	3,018
Amortization of debt discount	3,217		3,109		6,478		6,163
Amortization of debt issuance costs	399		399		798		798
Total interest expense related to the Convertible Senior Notes	$	5,126	$	5,017	$	10,295	$	9,979

In connection with the pricing of the Convertible Senior Notes and subsequently in connection with the exercise of the initial purchaser's option to purchase additional notes, the Company entered into privately negotiated capped call transactions with certain counterparties (the "Capped Calls"). The Capped Calls each have a strike price of $16.72 per share, subject to certain adjustments, which corresponds to the initial conversion price of the Convertible Senior Notes. The Capped Calls have initial cap prices of $23.46 per share, subject to certain adjustments. The Capped Calls are expected generally to reduce potential dilution to the Company's common stock upon any conversion of notes and/or offset any cash payments the Company is required to make in excess of the aggregate principal amount of converted notes, as the case may be, with such reduction and/or offset subject to a cap. The initial cap price of the Capped Call transactions was $23.46.

2018 Term Note and Revolving Credit Facility

On July 31, 2018, the Company entered into the 2018 Credit Facility consisting of a $100 million senior secured term loan and a $500 million revolving credit facility. The co-borrowers under the 2018 Credit Facility are the Company and Vonage America Inc., the Company’s wholly owned subsidiary. Obligations under the 2018 Credit Facility are guaranteed, fully and unconditionally, by the Company’s other United States subsidiaries and are secured by substantially all of the assets of each borrower and each guarantor.

During the six months ended June 30, 2021, we repaid $45 million under the revolving facility. In addition, the effective interest rate was 2.88% as of June 30, 2021. During the six months ended June 30, 2020, we borrowed $75 million under the revolving credit facility and repaid $50 million under the revolving facility. As of June 30, 2021, we were in compliance with all covenants, including financial covenants, for the 2018 Credit Facility.

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Leases

6 Months Ended

Jun. 30, 2021

Leases [Abstract]

Lessee, Operating Leases

Leases

The Company entered into various non-cancelable operating lease arrangements for certain of our existing office and telecommunications co-location space as well as operating leases for certain equipment. The operating leases expire at various times through 2028, some of which provide the Company options to extend the lease for terms up to 5 years beyond the original term. We are committed to pay a portion of the buildings’ operating expenses as required under the arrangements which we will separate as a non-lease component when readily determinable. The Company did not have any finance leases as of June 30, 2021 and December 31, 2020.

The Company incurred operating lease expense of $2,487 and $5,045, respectively, during the three and six months ended June 30, 2021 and $2,900 and $5,865, respectively, during the three and six months ended June 30, 2020, related to its operating leases. In addition, the Company received sub-lease income of $301 and $585, respectively, during the three and six months ended June 30, 2021 and $292 and $611, respectively, during the three and six months ended June 30, 2020. Additionally, the remaining weighted average lease term for our operating leases was 4.89 years and the weighted average discount rate utilized to measure the Company's operating leases was 4.32% as of June 30, 2021.

Supplemental cash flow related to the Company's operating leases is as follows:

	Six Months Ended
	June 30, 2021		June 30, 2020
Cash paid for amounts included in the measurement of lease liabilities	$	5,782	$	8,199
Right-of-use assets obtained in exchange for lease obligations	$	8,431	$	1,261

Maturities of operating lease liabilities as of June 30, 2021 and December 31, 2020 are as follows:

	June 30, 2021		December 31, 2020
2021 (1)	$	5,925	13,134
2022	11,725		9,645
2023	10,876		8,401
2024	6,837		4,148
2025	6,937		4,248
Thereafter	9,539		7,522
Total lease payments	51,839		47,098
Less imputed interest	(4,861)		(4,525)
Total	$	46,978	$	42,573

(1) Excluding six months ended June 30, 2021 for the period ended June 30, 2021.

During the first quarter of 2020, the Company amended one of its office leases to remove a renewal period of 5 years beyond the initial lease term.  In the Company's adoption of ASC 842, the Company had included the available renewal term within the transition asset and liability as the renewal was highly probable at the time of adoption.  As a result, the Company's operating lease liability was reduced by $15,825 with a corresponding reduction in the Company's operating lease right-of-use assets as of March 31, 2020. During the third and fourth quarters of 2020, the Company abandoned a few of its office leases and as such, the Company reduced its operating lease right-of-use asset by $9,503 as of December 31, 2020 by accelerating the amortization of the right-of-use asset through the cease use date which is included in general and administrative expense.

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Common Stock

6 Months Ended

Jun. 30, 2021

Equity [Abstract]

Stockholders' Equity Note Disclosure

Common Stock

As of June 30, 2021 and December 31, 2020, the Company had 596,950 shares of common stock authorized and had 10,388 shares available for grants under our share-based compensation programs as of June 30, 2021. For a detailed description of our share-based compensation programs refer to Note 11, Employee Stock Benefit Plans in the consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2020. The following table reflects the changes in the Company's common stock issued and outstanding:

For the Three Months Ended
(in thousands)	Issued	Treasury	Outstanding
Balance at March 31, 2020	319,880	(74,634)	245,246
Shares issued under the 2015 Equity Incentive Plan	275	—	275
Employee taxes paid on withholding shares	—	(66)	(66)
Balance at June 30, 2020	320,155	(74,700)	245,455
Balance at March 31, 2021	327,427	(76,157)	251,270
Shares issued under the 2015 Equity Incentive Plan	386	—	386
Employee taxes paid on withholding shares	—	(115)	(115)
Balance at June 30, 2021	327,813	(76,272)	251,541
For the Six Months Ended
(in thousands)	Issued	Treasury	Outstanding
Balance at December 31, 2019	315,808	(72,959)	242,849
Shares issued under the 2015 Equity Incentive Plan	4,347		4,347
Employee taxes paid on withholding shares		(1,741)	(1,741)
Balance at June 30, 2020	320,155	(74,700)	245,455
Balance at December 31, 2020	323,815	(74,841)	248,974
Shares issued under the 2015 Equity Incentive Plan	3,998		3,998
Employee taxes paid on withholding shares		(1,431)	(1,431)
Balance at June 30, 2021	327,813	(76,272)	251,541

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Commitments and Contingencies

6 Months Ended

Jun. 30, 2021

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

Litigation

From time to time we are subject to legal proceedings, claims and investigations relating to our business, including claims of alleged infringement of commercial, employment, intellectual property rights, and other matters. From time to time, we receive letters or other communications from third parties inviting us to obtain patent licenses that might be relevant to our business or alleging that our services infringe upon third-party patents or other intellectual property. In accordance with generally accepted accounting principles, we make a provision for a liability when it is both probable that a liability has been incurred and the amount of the loss or range of loss can be reasonably estimated. These provisions, if any, are reviewed at least quarterly and adjusted to reflect the impacts of negotiations, settlements, rulings, advice of legal counsel, and other information and events pertaining to a particular case. Litigation is inherently unpredictable. We believe that we have valid defenses with respect to the legal matters pending against us and are vigorously defending these matters. Given the uncertainty surrounding litigation and our inability to assess the likelihood of a favorable or unfavorable outcome in such matters and our inability to reasonably estimate the amount of loss or range of loss, it is possible that the resolution of one or more of these matters could have a material adverse effect on our condensed consolidated financial position, cash flows or results of operations.

Regulation

Telephony services are subject to a broad spectrum of state, federal and foreign regulations. Because of the uncertainty over whether VoIP should be treated as a telecommunications or information service, we have been involved in a substantial amount of state and federal regulatory activity. Implementation and interpretation of the existing laws and regulations is ongoing and is subject to litigation by various federal and state agencies and courts. Due to the uncertainty over the regulatory classification of VoIP service, there can be no assurance that we will not be subject to new regulations or existing regulations under new interpretations, and that such change would not introduce material additional costs to our business. The Company continues to monitor federal regulations relating to net neutrality, rural call completion issues, number slamming, 911 access, access to telecommunication equipment and services by persons with disabilities, caller ID services, number portability, unwanted calls to reassigned numbers, and robocalling. As we continue to expand globally, these types of regulations are likely to be similarly enacted and enforced by the local regulatory authorities.  

State and Municipal Taxes

In accordance with generally accepted accounting principles, we make a provision for a liability for taxes when it is both probable that a liability has been incurred and the amount of the liability or range of liability can be reasonably estimated. These provisions are reviewed at least quarterly and adjusted to reflect the impacts of negotiations, settlements, rulings, advice of legal counsel, and other information and events pertaining to a particular case. From time to time, we have received inquiries from a number of states and local taxing agencies with respect to the remittance of sales, use, telecommunications, and excise taxes. Several jurisdictions are currently conducting tax audits of the Company's records. While the Company collects or has accrued for taxes that it believes are required to be remitted, it has reviewed its positions in those various jurisdictions as well as other regulatory fees and has established appropriate reserves. As such, we have established reserves of $9,601 and $8,560 as of June 30, 2021 and December 31, 2020, respectively, as our best estimate of the potential tax exposure for any retroactive assessment.

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Industry Segment and Geographic Information

6 Months Ended

Jun. 30, 2021

Segment Reporting [Abstract]

Segment Reporting Disclosure

Industry Segment and Geographic Information

ASC 280, Segment Reporting, establishes reporting standards for an enterprise's business segments and related disclosures about its products, services, geographic areas and major customers. Under ASC 280, the method for determining what information to report is based upon the way management organizes the reportable operating segments within the Company for making operating decisions and assessing financial performance. Our chief operating decision-maker reviews revenue and Adjusted EBITDA for each of our reportable operating segments. Beginning as of December 31, 2020, the Company includes Adjusted EBITDA as this is the measure management uses to evaluate the profitability of our reportable operating segments. The items excluded from Adjusted EBITDA are not separately evaluated for each reportable operating segment. The Company has recast data from prior years to reflect the change how the Company evaluates the profitability of its reportable operating segments to conform to the current year presentation. In addition, with the exception of goodwill and intangible assets, we do not identify or allocate our assets by the reportable operating segments as this information is not utilized by management to allocate resources or capital.

Vonage Communications Platform

The Vonage Communications Platform is our single enterprise cloud communications platform, offering our wide range of enterprise communications services and solutions including Communications APIs, Unified Communications, and Contact Center Communications. The Vonage Communications Platform brings unique value to businesses by providing multiple communications channels - video, voice, messaging, email and verification - that integrate into applications, products and workflows. This delivers both the power and the flexibility our customers need to disrupt their industries, and enables the type of business continuity, remote work, and remote delivery of services that are now essential for companies to work and serve customers from anywhere. Vonage products and services enable our business customers to fundamentally change how they engage with their customers and team members. We have a robust set of solutions and services that meet the needs of businesses of all sizes, from micro, to SMB through mid-market and enterprise. We provide customers with multiple deployment options designed to provide the reliability and quality of service they demand. Vonage solutions also integrate with today's leading business applications, CRM and productivity tools,, including Google’s G Suite, Zendesk, Salesforce’s Sales and Service Clouds, Microsoft Dynamics, ServiceNow, Oracle, and Clio among others, to drive internal communications and collaboration among team members and external engagement with customers.

Consumer

For our Consumer customers, we enable users to access and utilize our UCaaS services and features, via a single “identity,” either a number or user name, regardless of how they are connected to the Internet, including over 3G/4G, LTE, Cable, or DSL broadband networks. This technology enables us to offer our Consumer customers attractively priced voice and messaging services and other features around the world on a variety of devices.

Information about our segment results for the six months ended June 30, 2021 and June 30, 2020 were as follows:

Three Months Ended	Service Revenue		Revenue		Adjusted EBITDA		Depreciation and Amortization
June 30, 2021
Vonage Communications Platform	$	260,452	$	276,413	$	1,098	$	22,055
Consumer	63,289		75,056		47,707		229
Total Vonage	$	323,741	$	351,469	$	48,805	$	22,284
June 30, 2020
Vonage Communications Platform	$	212,310	$	226,249	$	(17,513)	$	19,650
Consumer	75,045		84,284		59,057		1,042
Total Vonage	$	287,355	$	310,533	$	41,544	$	20,692
Six Months Ended	Service Revenue		Revenue		Adjusted EBITDA		Depreciation and Amortization
June 30, 2021
Vonage Communications Platform	$	500,894	$	531,867	$	(748)	$	42,135
Consumer	128,986		152,502		97,720		566
Total Vonage	$	629,880	$	684,369	$	96,972	$	42,701
June 30, 2020
Vonage Communications Platform	$	407,959	$	436,502	$	(38,601)	$	38,848
Consumer	152,288		171,488		118,982		2,329
Total Vonage	$	560,247	$	607,990	$	80,381	$	41,177

The Company uses Adjusted EBITDA as the measure of profit or loss for the evaluation of performance and allocation of resources of our reportable operating segments. Adjusted EBITDA is defined as net income or net loss attributable to Vonage before income tax expense or benefit, interest expense, depreciation and amortization, stock-based expense, amortization of costs to implement cloud computing arrangements, organizational transformation costs, restructuring activities, and other non-recurring items. Organizational transformation includes employee related exits including CEO succession, system change management, facility exit costs, and rebranding. Restructuring activities relate to the Company's business-wide optimization and alignment project initiated in 2020 which included employee related exits and further facility exit costs executed upon as part of the overall project. Other non-recurring items principally include certain litigation charges including defense costs and other non-recurring project costs such as the review of the Consumer business review and the business optimization project, both of which were initiated in 2020. This is also consistent with the measure used under our bank credit assessment. Our reconciliation of the aggregate amount of Adjusted EBITDA for our reportable segments to consolidated income before taxes is presented below:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2021		2020		2021		2020
Adjusted EBITDA	$	48,805	$	41,544	$	96,972	$	80,381
Interest expense	(7,081)		(9,321)		(14,379)		(17,403)
Depreciation and amortization	(22,284)		(20,692)		(42,701)		(41,177)
Amortization of costs to implement cloud computing arrangements	(961)		(668)		(1,857)		(1,277)
Share-based expense	(15,762)		(11,326)		(30,328)		(22,442)
Organizational transformation	—		(3,925)		—		(5,119)
Restructuring activities	(1,361)		—		(2,655)		—
Other non-recurring items	(563)		(2,549)		(2,454)		(3,905)
Income (Loss) before taxes	$	793	$	(6,937)	$	2,598	$	(10,942)

Information about our operations by geographic location is as follows:

	June 30, 2021		December 31, 2020
Long-lived assets:
United States	$	635,174	$	646,072
United Kingdom	291,929		293,457
Israel	1,072		1,325
	$	928,175	$	940,854

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- Summary of Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2021

Accounting Policies [Abstract]

Unaudited Interim Financial Information

Unaudited Interim Financial Information

The accompanying unaudited interim condensed consolidated financial statements and information have been prepared in accordance with accounting principles generally accepted in the United States and in accordance with the SEC's regulations for interim financial information and with the instructions for Form 10-Q. Accordingly, they do not include all of the information and disclosures required by accounting principles generally accepted in the United States for complete financial statements. In the opinion of management, these financial statements contain all normal and recurring adjustments considered necessary to present fairly the Company's financial position, results of operations, comprehensive income, cash flows, and stockholders’ equity for the periods presented. The results for the six months ended June 30, 2021 are not necessarily indicative of the results to be expected for the full year.

These unaudited interim condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and related notes included in our Annual Report on Form 10-K for the year ended December 31, 2020 filed with the Securities and Exchange Commission on February 19, 2021.

Use of Estimates

Use of Estimates

Our condensed consolidated financial statements and notes thereof are prepared in conformity with accounting principles generally accepted in the United States, which require management to make estimates and assumptions that affect the amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates, including uncertainty in the economic environment due to the ongoing outbreak of the novel coronavirus COVID-19.

We base our estimates on historical experience, available market information, appropriate valuation methodologies, and on various other assumptions that we believe to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities. Estimates are used for such items as depreciable lives for long-lived assets including intangible assets, tax provisions, uncollectible accounts, and assets and liabilities assumed in business combinations, among others. In addition, estimates are used to test long-lived assets and goodwill for impairment.COVID-19 has created and may continue to create uncertainty in customer payments, reduced usage, and issuance of customer credits to distressed customers served by certain product lines. As of the date of our condensed consolidated financial statements, we are not aware of any specific event or circumstance that would require us to materially update our estimates or judgments. However, these estimates may change as new events occur and additional information is obtained, which may result in changes being recognized in our condensed consolidated financial statements in future periods. In particular and in light of the COVID-19 pandemic, the assumptions and estimates associated with collectability assessment of revenue and credit losses of accounts receivable may have a material impact our consolidated financial statements in future periods, depending on the continued duration or degree of the impact of the COVID-19 pandemic on the global economy.

Reclassifications

Reclassifications

Reclassifications have been made to our condensed consolidated financial statements for the prior year periods to conform to classifications used in the current year periods. The reclassifications did not affect results of operations, net assets or cash flows.

Cost of Revenues

Service, Access, and Product Cost of Revenues

Service, access, and product cost of revenues excludes depreciation and amortization expense of $15,515 and $11,148 for the three months ended June 30, 2021 and 2020 and $29,162 and $22,304 for the six months ended June 30, 2021 and 2020, respectively. In addition, costs of goods sold included service, access, and product cost of revenues during the three months ended June 30, 2021 and 2020 were $4,306 and $2,419 and during the six months ended June 30, 2021 and 2020 were $6,885 and $6,095, respectively.

Sales and Marketing Expenses

Sales and Marketing Expenses

We incurred advertising costs, which are included in sales and marketing of $12,809 and $14,290 for the three months ended June 30, 2021 and 2020 and $22,466 and $23,750 for the six months ended June 30, 2021 and 2020, respectively.

Fair Value of Financial Instruments

Fair Value of Financial Instruments

Certain of the Company's other financial instruments, which include cash and cash equivalents, restricted cash, accounts receivable and accounts payable, approximate fair value due to their short-term nature and as such are classified as Level 1. We believe the fair value of our 2018 Credit Facility at June 30, 2021 and December 31, 2020 was approximately the same as its carrying amount as the facility bears interest at a variable rate indexed to current market conditions and is classified as Level 2 within the fair value hierarchy.

As of June 30, 2021 and December 31, 2020, the fair value of the 1.75% convertible senior notes due 2024 (the “Convertible Senior Notes”) was approximately $385,538 and $373,373, respectively. The fair value was determined based on the quoted price for the Convertible Senior Notes in an inactive market on the last trading day of the reporting period and is classified as Level 2 in the fair value hierarchy.

We account for financial assets using a framework that establishes a hierarchy that ranks the quality and reliability of the inputs, or assumptions, we use in the determination of fair value, and we classify financial assets and liabilities carried at fair value in one of the following three categories:

•Level 1 - quoted prices (unadjusted) in active markets that are accessible at the measurement date for identical assets and liabilities. The fair value hierarchy gives the highest priority to Level 1 inputs.

•Level 2 - observable prices that are based on inputs not quoted on active markets but corroborated by market data; and

•Level 3 - unobservable inputs when there is little or no market data available, thereby requiring an entity to develop its own assumptions. The fair value hierarchy gives the lowest priority to Level 3 inputs.

Recent Accounting Pronouncements

Recent Accounting Pronouncements

In August 2020, the FASB issued ASU 2020-06, "Debt - Debt with Conversion Options (Subtopic 470-20) and Derivatives and Hedging - Contracts in Entity's Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity's Own Equity". This ASU simplifies the accounting for certain convertible instruments such that the embedded conversion features are no longer separated from the host contract for convertible instruments with conversion features that are not required to be accounted for as derivatives under ASC 815, or that do not result in substantial premiums accounted for as paid-in-capital. As a result, more convertible debt instruments will be accounted for as a single liability measured at its amortized cost. In addition, the ASU requires the use of the if-converted method to be applied to convertible instruments when calculating earnings per share. The ASU is effective for fiscal years beginning after December 15, 2021, including interim periods within those fiscal years, using either a modified retrospective or a full retrospective approach. Early adoption is permitted for fiscal years beginning after December 15, 2020. The Company is currently evaluating the impact of this standard on our consolidated financial statements.

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Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2021

Accounting Policies [Abstract]

Restrictions on Cash and Cash Equivalents

The following table provides a reconciliation of cash and cash equivalents and restricted cash reported within the consolidated balance sheets to amounts included in the consolidated statements of cash flows:

	As of June 30,				As of December 31,
	2021		2020		2020		2019
Cash and cash equivalents	$	39,977	$	47,565	$	43,078	$	23,620
Restricted cash	2,097		2,046		1,919		2,015
Total cash, cash equivalents and restricted cash	$	42,074	$	49,611	$	44,997	$	25,635

Schedule of Finite-Lived Intangible Assets

Intangible assets, net

	June 30, 2021						December 31, 2020
	Gross Carrying Value		Accumulated Amortization		Net Carrying Value		Gross Carrying Value		Accumulated Amortization		Net Carrying Value
Customer relationships	$	283,102	$	(160,231)	$	122,871	$	284,692	$	(150,094)	$	134,598
Developed technology	174,132		(114,663)		59,469		173,572		(104,468)		69,104
Patents and patent licenses	20,967		(20,314)		653		20,849		(20,284)		565
Trade names	519		(519)		—		500		(500)		—
Total intangible assets	$	478,720	$	(295,727)	$	182,993	$	479,613	$	(275,346)	$	204,267

Schedule of Accrued Liabilities

Accrued expenses

	June 30, 2021		December 31, 2020
Compensation and related taxes and temporary labor	$	42,052	$	43,580
Marketing	20,499		15,319
Taxes and fees	24,313		25,977
Telecommunications	55,165		52,975
Severance	671		3,594
Interest	857		847
Customer credits	3,273		4,738
Professional fees	3,003		1,953
Inventory	1,104		659
Other accruals	7,139		8,438
Accrued expenses	$	158,076	$	158,080

Schedule of Goodwill

The following table provides a summary of the changes in the carrying amounts of goodwill:

Balance at December 31, 2020	$	624,328
Foreign currency translation adjustment	(1,905)
Balance at June 30, 2021	$	622,423

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Revenue Recognition (Tables)

6 Months Ended

Jun. 30, 2021

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following tables detail our revenue from customers disaggregated by primary geographical market and source of revenue. The tables also include a reconciliation of the disaggregated revenue for our Vonage Communications Platform, or VCP, and Consumer segments.

	Three Months Ended						Three Months Ended
	June 30, 2021						June 30, 2020
	VCP		Consumer		Total		VCP		Consumer		Total
Primary geographical markets
Americas	$	155,524	$	72,588	$	228,112	$	136,346	$	81,859	$	218,205
EMEA	68,526		2,468		70,994		53,051		2,425		55,476
APAC	52,363		—		52,363		36,852		—		36,852
	$	276,413	$	75,056	$	351,469	$	226,249	$	84,284	$	310,533
Major Sources of Revenue
Service revenues	$	260,452	$	63,289	$	323,741	$	212,310	$	75,045	$	287,355
Access and product revenues	8,765		53		8,818		9,109		52		9,161
USF revenues	7,196		11,714		18,910		4,830		9,187		14,017
	$	276,413	$	75,056	$	351,469	$	226,249	$	84,284	$	310,533
	Six Months Ended						Six Months Ended
	June 30, 2021						June 30, 2020
	VCP		Consumer		Total		VCP		Consumer		Total
Primary geographical markets
Americas	$	305,596	$	147,520	$	453,116	$	265,725	$	166,432	$	432,157
EMEA	131,361		4,982		136,343		102,268		5,056		$	107,324
APAC	94,910		—		94,910		68,509		—		$	68,509
	$	531,867	$	152,502	$	684,369	$	436,502	$	171,488	$	607,990
Major Sources of Revenue
Service revenues	$	500,894	$	128,986	$	629,880	$	407,959	$	152,288	$	560,247
Access and product revenues	17,363		109		17,472		19,231		115		19,346
USF revenues	13,610		23,407		37,017		9,312		19,085		28,397
	$	531,867	$	152,502	$	684,369	$	436,502	$	171,488	$	607,990

Contract with Customer, Asset and Liability

The following table provides information about receivables and contract liabilities from contracts with customers:

	June 30, 2021		December 31, 2020
Receivables (1)	$	124,426	$	116,304
Contract liabilities (2)	61,721		65,506

(1) Amounts included in accounts receivables on our condensed consolidated balance sheets.

(2) Amounts included in deferred revenues on our condensed consolidated balance sheet.

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Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2021

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

The following table sets forth the computation for basic and diluted loss per share for the three and six months ended June 30, 2021 and 2020:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2021		2020		2021		2020
Numerator
Net income (loss)	$	62	$	(8,430)	$	(314)	$	(12,185)
Denominator
Weighted average common shares outstanding for basic and diluted net loss per share	251,430		245,385		250,539		244,506
Dilutive effect of stock options and restricted stock units	8,532		—		—		—
Diluted weighted average common shares outstanding	259,962		245,385		250,539		244,506
Basic income (loss) per share
Basic income (loss) per share	$	—	$	(0.03)	$	—	$	(0.05)
Diluted income (loss) per share
Diluted income (loss) per share	$	—	$	(0.03)	$	—	$	(0.05)

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

For the three and six months ended June 30, 2021 and 2020, the following were excluded from the calculation of diluted loss per common share because of their anti-dilutive effects: 

	Three Months Ended		Six Months Ended
	June 30,		June 30,
	2021	2020	2021	2020
Restricted stock units	7,456	12,409	15,129	12,409
Stock options	449	4,777	1,308	4,777
	7,905	17,186	16,437	17,186

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Incomes Taxes (Tables)

6 Months Ended

Jun. 30, 2021

Income Tax Disclosure [Abstract]

Schedule of Effective Income Tax Rate Reconciliation

The income tax consisted of the following:

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2021			2020			2021			2020
Income (loss) before income taxes	$	793		$	(6,937)		$	2,598		$	(10,942)
Income tax expense	(731)			(1,493)			(2,912)			(1,243)
Effective tax rate	92.2		%	21.5		%	112.1		%	11.4		%

Schedule of Unrecognized Tax Benefits Roll Forward

The following table reconciles the total amounts of uncertain tax benefits:

	June 30, 2021		December 31, 2020
Balance as of January 1	$	632	$	914
Increase due to current year positions	375		114
Increase due to prior year positions	6		—
Decrease due to settlements and payments	(241)		(173)
Decrease due to lapse of applicable statute of limitations	—		(238)
(Decrease) increase due to foreign currency fluctuation	6		15
Uncertain tax benefits as of the end of the period	$	778	$	632

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- Long-Term Debt (Tables)

6 Months Ended

Jun. 30, 2021

Debt Disclosure [Abstract]

Schedule of Long-Term Debt

The following table summarizes the Company's long-term debt as of June 30, 2021 and December 31, 2020:

	June 30, 2021		December 31, 2020
Revolving credit facility - due 2023	170,500		215,500
Convertible senior notes - due 2024	345,000		345,000
Long-term debt including current maturities	515,500		560,500
Less unamortized discount	42,224		48,702
Less debt issuance costs	4,716		5,514
Total long-term debt	$	468,560	$	506,284

Schedule of Net Carrying Amount of Liability and Equity Components of Notes

The net carrying amount of the liability component of the Convertible Senior Notes was as follows:

	June 30, 2021
Principal	$	345,000
Unamortized discount	(42,224)
Unamortized issuance cost	(4,716)
Net carrying amount	$	298,060

Schedule of Interest Expense Recognized Related to Notes

The following table sets forth the interest expense recognized related to the Convertible Senior Notes:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2021		2020		2021		2020
Contractual interest expense	$	1,510	$	1,509	$	3,019	$	3,018
Amortization of debt discount	3,217		3,109		6,478		6,163
Amortization of debt issuance costs	399		399		798		798
Total interest expense related to the Convertible Senior Notes	$	5,126	$	5,017	$	10,295	$	9,979

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Leases - Leases (Tables)

6 Months Ended

Jun. 30, 2021

Leases [Abstract]

Supplemental Cash Flow - Operating Leases

Supplemental cash flow related to the Company's operating leases is as follows:

	Six Months Ended
	June 30, 2021		June 30, 2020
Cash paid for amounts included in the measurement of lease liabilities	$	5,782	$	8,199
Right-of-use assets obtained in exchange for lease obligations	$	8,431	$	1,261

Maturity of Lease Liabilities

Maturities of operating lease liabilities as of June 30, 2021 and December 31, 2020 are as follows:

	June 30, 2021		December 31, 2020
2021 (1)	$	5,925	13,134
2022	11,725		9,645
2023	10,876		8,401
2024	6,837		4,148
2025	6,937		4,248
Thereafter	9,539		7,522
Total lease payments	51,839		47,098
Less imputed interest	(4,861)		(4,525)
Total	$	46,978	$	42,573

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Common Stock (Tables)

6 Months Ended

Jun. 30, 2021

Equity [Abstract]

Schedule of Stock by Class

The following table reflects the changes in the Company's common stock issued and outstanding:

For the Three Months Ended
(in thousands)	Issued	Treasury	Outstanding
Balance at March 31, 2020	319,880	(74,634)	245,246
Shares issued under the 2015 Equity Incentive Plan	275	—	275
Employee taxes paid on withholding shares	—	(66)	(66)
Balance at June 30, 2020	320,155	(74,700)	245,455
Balance at March 31, 2021	327,427	(76,157)	251,270
Shares issued under the 2015 Equity Incentive Plan	386	—	386
Employee taxes paid on withholding shares	—	(115)	(115)
Balance at June 30, 2021	327,813	(76,272)	251,541
For the Six Months Ended
(in thousands)	Issued	Treasury	Outstanding
Balance at December 31, 2019	315,808	(72,959)	242,849
Shares issued under the 2015 Equity Incentive Plan	4,347		4,347
Employee taxes paid on withholding shares		(1,741)	(1,741)
Balance at June 30, 2020	320,155	(74,700)	245,455
Balance at December 31, 2020	323,815	(74,841)	248,974
Shares issued under the 2015 Equity Incentive Plan	3,998		3,998
Employee taxes paid on withholding shares		(1,431)	(1,431)
Balance at June 30, 2021	327,813	(76,272)	251,541

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Industry Segment and Geographic Information (Tables)

6 Months Ended

Jun. 30, 2021

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

Information about our segment results for the six months ended June 30, 2021 and June 30, 2020 were as follows:

Three Months Ended	Service Revenue		Revenue		Adjusted EBITDA		Depreciation and Amortization
June 30, 2021
Vonage Communications Platform	$	260,452	$	276,413	$	1,098	$	22,055
Consumer	63,289		75,056		47,707		229
Total Vonage	$	323,741	$	351,469	$	48,805	$	22,284
June 30, 2020
Vonage Communications Platform	$	212,310	$	226,249	$	(17,513)	$	19,650
Consumer	75,045		84,284		59,057		1,042
Total Vonage	$	287,355	$	310,533	$	41,544	$	20,692
Six Months Ended	Service Revenue		Revenue		Adjusted EBITDA		Depreciation and Amortization
June 30, 2021
Vonage Communications Platform	$	500,894	$	531,867	$	(748)	$	42,135
Consumer	128,986		152,502		97,720		566
Total Vonage	$	629,880	$	684,369	$	96,972	$	42,701
June 30, 2020
Vonage Communications Platform	$	407,959	$	436,502	$	(38,601)	$	38,848
Consumer	152,288		171,488		118,982		2,329
Total Vonage	$	560,247	$	607,990	$	80,381	$	41,177

Reconciliation of Operating Profit (Loss) from Segments to Consolidated

Our reconciliation of the aggregate amount of Adjusted EBITDA for our reportable segments to consolidated income before taxes is presented below:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2021		2020		2021		2020
Adjusted EBITDA	$	48,805	$	41,544	$	96,972	$	80,381
Interest expense	(7,081)		(9,321)		(14,379)		(17,403)
Depreciation and amortization	(22,284)		(20,692)		(42,701)		(41,177)
Amortization of costs to implement cloud computing arrangements	(961)		(668)		(1,857)		(1,277)
Share-based expense	(15,762)		(11,326)		(30,328)		(22,442)
Organizational transformation	—		(3,925)		—		(5,119)
Restructuring activities	(1,361)		—		(2,655)		—
Other non-recurring items	(563)		(2,549)		(2,454)		(3,905)
Income (Loss) before taxes	$	793	$	(6,937)	$	2,598	$	(10,942)

Long-lived Assets by Geographic Areas

Information about our operations by geographic location is as follows:

	June 30, 2021		December 31, 2020
Long-lived assets:
United States	$	635,174	$	646,072
United Kingdom	291,929		293,457
Israel	1,072		1,325
	$	928,175	$	940,854

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Nature of Business (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
United States
Concentration Risk [Line Items]
Customer representation of revenue, percentage	64.00%	68.00%	65.00%	69.00%

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Summary of Significant Accounting Policies - Cost of Revenues (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Accounting Policies [Abstract]
Depreciation and amortization	$ 15,515	$ 11,148	$ 29,162	$ 22,304
Cost of Goods and Services Sold	$ 4,306	$ 2,419	$ 6,885	$ 6,095

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Summary of Significant Accounting Policies - Sales and Marketing Expenses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Accounting Policies [Abstract]
Advertising costs	$ 12,809	$ 14,290	$ 22,466	$ 23,750

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Summary of Significant Accounting Policies - Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Fair Value, Inputs, Level 2 | Fair value, measurements, recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Convertible debt, fair value disclosures	$ 385,538	$ 373,373

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Summary of Significant Accounting Policies - Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
Accounting Policies [Abstract]
Cash and cash equivalents	$ 39,977	$ 43,078	$ 47,565	$ 23,620
Restricted cash	2,097	1,919	2,046	2,015
Cash, cash equivalents, and restricted cash	$ 42,074	$ 44,997	$ 49,611	$ 25,635

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Summary of Significant Accounting Policies - Intangible Assets, Net (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 478,720	$ 479,613
Finite-Lived Intangible Assets, Accumulated Amortization	(295,727)	(275,346)
Total intangible assets	182,993	204,267
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	283,102	284,692
Finite-Lived Intangible Assets, Accumulated Amortization	(160,231)	(150,094)
Total intangible assets	122,871	134,598
Developed technology
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	174,132	173,572
Finite-Lived Intangible Assets, Accumulated Amortization	(114,663)	(104,468)
Total intangible assets	59,469	69,104
Patents and patent licenses
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	20,967	20,849
Finite-Lived Intangible Assets, Accumulated Amortization	(20,314)	(20,284)
Total intangible assets	653	565
Trade names
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	519	500
Finite-Lived Intangible Assets, Accumulated Amortization	(519)	(500)
Total intangible assets	$ 0	$ 0

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Summary of Significant Accounting Policies - Accrued Expenses (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Accounting Policies [Abstract]
Compensation and related taxes and temporary labor	$ 42,052	$ 43,580
Marketing	20,499	15,319
Taxes and fees	24,313	25,977
Telecommunications	55,165	52,975
Severance	671	3,594
Interest	857	847
Customer credits	3,273	4,738
Professional fees	3,003	1,953
Inventory	1,104	659
Other accruals	7,139	8,438
Accrued expenses	$ 158,076	$ 158,080

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Summary of Significant Accounting Policies - Goodwill (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
- Schedule of Goodwill [Abstract]
Goodwill	$ 622,423	$ 624,328
Goodwill, Foreign Currency Translation Gain (Loss)	$ 1,905

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Summary of Significant Accounting Policies - Narratives (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Sep. 30, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost, Depreciation and Amortization	$ 15,515	$ 11,148	$ 29,162	$ 22,304
Cost of Goods and Services Sold	$ 4,306	$ 2,419	$ 6,885	$ 6,095
Interest rate, stated percentage	1.75%		1.75%			1.75%
Severance Costs			$ 2,655
Fair value, measurements, recurring | Fair Value, Inputs, Level 2
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Convertible debt, fair value disclosures	$ 385,538		$ 385,538		$ 373,373

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Revenue Recognition Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation of Revenue [Line Items]
Total revenues	$ 351,469	$ 310,533	$ 684,369	$ 607,990
Vonage Communications Platform
Disaggregation of Revenue [Line Items]
Total revenues	276,413	226,249	531,867	436,502
Consumer Services
Disaggregation of Revenue [Line Items]
Total revenues	75,056	84,284	152,502	171,488
Service
Disaggregation of Revenue [Line Items]
Total revenues	323,741	287,355	629,880	560,247
Service | Vonage Communications Platform
Disaggregation of Revenue [Line Items]
Total revenues	260,452	212,310	500,894	407,959
Service | Consumer Services
Disaggregation of Revenue [Line Items]
Total revenues	63,289	75,045	128,986	152,288
Access and product revenues
Disaggregation of Revenue [Line Items]
Total revenues	8,818	9,161	17,472	19,346
Access and product revenues | Vonage Communications Platform
Disaggregation of Revenue [Line Items]
Total revenues	8,765	9,109	17,363	19,231
Access and product revenues | Consumer Services
Disaggregation of Revenue [Line Items]
Total revenues	53	52	109	115
USF [Member]
Disaggregation of Revenue [Line Items]
Total revenues	18,910	14,017	37,017	28,397
USF [Member] | Vonage Communications Platform
Disaggregation of Revenue [Line Items]
Total revenues	7,196	4,830	13,610	9,312
USF [Member] | Consumer Services
Disaggregation of Revenue [Line Items]
Total revenues	11,714	9,187	23,407	19,085
Americas
Disaggregation of Revenue [Line Items]
Total revenues	228,112	218,205	453,116	432,157
Americas | Vonage Communications Platform
Disaggregation of Revenue [Line Items]
Total revenues	155,524	136,346	305,596	265,725
Americas | Consumer Services
Disaggregation of Revenue [Line Items]
Total revenues	72,588	81,859	147,520	166,432
EMEA
Disaggregation of Revenue [Line Items]
Total revenues	70,994	55,476	136,343	107,324
EMEA | Vonage Communications Platform
Disaggregation of Revenue [Line Items]
Total revenues	68,526	53,051	131,361	102,268
EMEA | Consumer Services
Disaggregation of Revenue [Line Items]
Total revenues	2,468	2,425	4,982	5,056
Asia Pacific
Disaggregation of Revenue [Line Items]
Total revenues	52,363	36,852	94,910	68,509
Asia Pacific | Vonage Communications Platform
Disaggregation of Revenue [Line Items]
Total revenues	52,363	36,852	94,910	68,509
Asia Pacific | Consumer Services
Disaggregation of Revenue [Line Items]
Total revenues	$ 0	$ 0	$ 0	$ 0

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Revenue Recognition - Contract with Customer, Asset and Liability (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2021	Dec. 31, 2020
Revenue from Contract with Customer [Abstract]
Receivables		$ 124,426	$ 116,304
Contract liabilities		$ 61,721	$ 65,506
Recognized revenue, contract liabilities	$ 218,386

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Revenue Recognition - Performance Obligation (Details) - Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01 $ in Billions	Jun. 30, 2021 USD ($)
Revenue from Contract with Customer [Abstract]
Revenue, Remaining Performance Obligation, Amount	$ 0.4
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	18 months

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Revenue Recognition - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2022	Dec. 31, 2020
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total revenues	$ 351,469	$ 310,533	$ 684,369	$ 607,990
Contract With Customer, Liability, Including New Contract Revenue, Recognized	105,659	109,511	211,696
Recognized revenue, contract liabilities				218,386
Amortization of deferred customer acquisition costs	5,046	3,906	9,808	7,567
Scenario, Forecast
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Recognized revenue, contract liabilities					$ 61,721
Subscription services
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total revenues	149,237	154,127	299,690	310,582
Usage
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total revenues	149,996	111,379	283,648	204,426
USF and others
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total revenues	52,236	45,027	101,031	92,982
Current and Non-Current Portion
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Customer acquisition cost	91,350		91,350			$ 85,690
Vonage Communications Platform
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total revenues	$ 276,413	$ 226,249	$ 531,867	$ 436,502
Typical life of a customer			7 years
Maximum
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue, Performance Obligation, Description of Timing	3
Minimum
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue, Performance Obligation, Description of Timing	1

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Earnings Per Share - Schedule of Earnings Per Share Basic and Diluted (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
Numerator
Net income (loss)	$ 62	$ (8,430)	$ (314)	$ (12,185)
Basic and diluted earnings per share [Abstract]
Basic	251,430	245,385	250,539	244,506
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	8,532	0	0	0
Basic	$ 0	$ (0.03)	$ 0	$ (0.05)
Diluted	$ 0	$ (0.03)	$ 0	$ (0.05)
Diluted	259,962	245,385	250,539	244,506

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Earnings Per Share - Schedule of Antidilutive Securities (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Earnings per share, antidilutive securities:
Antidilutive securities excluded from earnings per common share (in shares)	7,905	17,186	16,437	17,186
Restricted stock units
Earnings per share, antidilutive securities:
Antidilutive securities excluded from earnings per common share (in shares)	7,456	12,409	15,129	12,409
Stock options
Earnings per share, antidilutive securities:
Antidilutive securities excluded from earnings per common share (in shares)	449	4,777	1,308	4,777

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Earnings Per Share - Narrative (Details) - $ / shares	Jun. 30, 2021	Sep. 30, 2019
Earnings Per Share [Abstract]
Debt instrument, conversion price (in dollar per share)	$ 16.72	$ 16.72

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Income Taxes - Effective Tax Rate (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]
Income (loss) before income taxes	$ 793	$ (6,937)	$ 2,598	$ (10,942)
Income tax expense	$ (731)	$ (1,493)	$ (2,912)	$ (1,243)
Effective tax rate	92.20%	21.50%	112.10%	11.40%

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Income Taxes - Schedule of Unrecognized Tax Benefit Roll Forward (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance as of January 1	$ 632	$ 914
Increase due to current year positions	375	114
Increase due to prior year positions	(6)	0
Decrease due to settlements and payments	(241)	(173)
Decrease due to lapse of applicable statute of limitations	0	(238)
(Decrease) increase due to foreign currency fluctuation	6	$ 15
Uncertain tax benefits as of the end of the period	$ 778

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Income Taxes - Narrative (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Apr. 01, 2023	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Operating Loss Carryforwards [Line Items]
Discrete period tax benefit			$ 2,019		$ 2,019
Uncertain tax position		$ 778		$ 778		$ 632	$ 914
Incurred penalties and interest expense		65	$ 0	67	$ 0
United Kingdom
Operating Loss Carryforwards [Line Items]
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount		$ 253
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent		19.00%
United Kingdom | Scenario, Forecast
Operating Loss Carryforwards [Line Items]
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent	25.00%
Domestic Tax Authority
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards		$ 410,731		410,731
State and Local Jurisdiction
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards		207,769		207,769
Foreign Tax Authority | Her Majesty's Revenue and Customs (HMRC)
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards		$ 159,152		$ 159,152

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Long-Term Debt - Schedule of Long-Term Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Revolving credit facility - due 2023	$ 170,500	$ 215,500
Convertible senior notes - due 2024	345,000	345,000
Long-term debt including current maturities	515,500	560,500
Less unamortized discount	42,224	48,702
Less debt issuance costs	4,716	5,514
Total long-term debt	$ 468,560	$ 506,284

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Long-Term Debt - Schedule of Net Carrying Amount of Liability Component of Notes (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020	Sep. 30, 2019	Jul. 31, 2018
Debt Disclosure [Abstract]
Principal	$ 345,000		$ 300,000	$ 100,000
Unamortized discount	(42,224)
Unamortized issuance cost	(4,716)	$ (5,514)
Net carrying amount	$ 298,060

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Long-Term Debt - Schedule of Interest Expense Recognized Related to Notes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Debt Disclosure [Abstract]
Contractual interest expense	$ 1,510	$ 1,509	$ 3,019	$ 3,018
Amortization of debt discount	3,217	3,109	6,478	6,163
Amortization of debt issuance costs	399	399	798	798
Total interest expense related to the Convertible Senior Notes	$ 5,126	$ 5,017	$ 10,295	$ 9,979

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Long-Term Debt - Narrative (Details) $ / shares in Units, $ in Thousands	1 Months Ended	6 Months Ended
	Jun. 30, 2019 USD ($) shares	Jun. 30, 2021 USD ($) $ / shares	Jun. 30, 2020 USD ($)	Sep. 30, 2019 USD ($) $ / shares $ / unit	Jul. 31, 2018 USD ($)
Debt Instrument [Line Items]
Principal		$ 345,000		$ 300,000	$ 100,000
Interest rate, stated percentage		1.75%		1.75%
Additional principal amount				$ 45,000
Converted instrument, amount	$ 1,000
Converted shares issued (in shares) | shares	59.8256
Debt instrument, conversion price (in dollar per share) | $ / shares		$ 16.72		$ 16.72
Derivative, cap price (in dollars per share) | $ / unit				23.46
Line of credit, maximum borrowing capacity					$ 500,000
Principal payments on notes and revolving credit facility		$ 45,000	$ 50,000
Proceeds from issuance of long-term debt		$ 0	75,000
Line of credit facility, interest rate at period end		2.88%
Line of credit
Debt Instrument [Line Items]
Principal payments on notes and revolving credit facility		$ 45,000	50,000
Proceeds from issuance of long-term debt			$ 75,000

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Leases - Supplemental Cash Flow - Operating Leases (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Leases [Abstract]
Cash paid for amounts included in the measurement of lease liabilities	$ 5,782	$ 8,199
Right-of-use assets obtained in exchange for operating lease liability	$ 8,431	$ 1,261

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Leases - Lessee, Operating Lease, Liability, Maturity (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Leases [Abstract]
2021 (1)	$ 5,925	$ 13,134
2022	11,725	9,645
2023	10,876	8,401
2024	6,837	4,148
2025	6,937	4,248
Thereafter	9,539	7,522
Total lease payments	51,839	47,098
Less imputed interest	(4,861)	(4,525)
Total	$ 46,978	$ 42,573

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Leases - Narratives (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended		12 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Leases [Abstract]
Modificationofoperatingleaseliability		$ 15,825
Operating lease, expense	$ 2,487		$ 2,900	$ 5,045	$ 5,865
Operating Leases, Income Statement, Sublease Revenue	$ 301		$ 292	$ 585	$ 611
Operating lease, weighted average remaining lease term	4 years 10 months 20 days			4 years 10 months 20 days
Operating lease, discount rate	4.32%			4.32%
Operating Lease, Right-of-Use Asset, Amortization Expense						$ 9,503

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Common Stock Schedule of Stock by Class (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Outstanding, Balance at beginning of period (in shares)	251,270	245,246	248,974	242,849
Shares issued under the 2015 Equity Incentive Plan (in shares)	386	275	3,998	4,347
Employee taxes paid on withholding shares (in shares)	115	66	1,431	1,741
Outstanding, Balance at end of period (in shares)	251,541	245,455	251,541	245,455
Common Stock Issued
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issued, Balance at beginning of period (in shares)	327,427	319,880	323,815	315,808
Shares issued under the 2015 Equity Incentive Plan (in shares)	386	275	3,998	4,347
Employee taxes paid on withholding shares (in shares)	0	0
Issued, Balance at end of period (in shares)	327,813	320,155	327,813	320,155
Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury, Balance at beginning of period (in shares)	76,157	74,634	74,841	72,959
Shares issued under the 2015 Equity Incentive Plan (in shares)	0	0
Employee taxes paid on withholding shares (in shares)	115	66	1,431	1,741
Treasury, Balance at end of period (in shares)	76,272	74,700	76,272	74,700

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Common Stock - Narrative (Details) - shares	Jun. 30, 2021	Dec. 31, 2020
Class of Stock [Line Items]
Common stock, shares authorized (in shares)	596,950,000	596,950,000
Shares available for grant (in shares)	10,388

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Commitments and Contingencies - Narrative (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Reserve for potential tax liability pending new requirements from state or municipal agencies	$ 9,601	$ 8,560

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Industry Segment and Geographic Information - Schedule of Segment Results (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting Information [Line Items]
Total revenues	$ 351,469	$ 310,533	$ 684,369	$ 607,990
Adjusted EBITDA	48,805	41,544	96,972	80,381
Depreciation, Depletion And Amortization Including Impairment Charges	22,284	20,692	42,701	41,177
Vonage Communications Platform
Segment Reporting Information [Line Items]
Total revenues	276,413	226,249	531,867	436,502
Adjusted EBITDA	1,098	(17,513)	(748)	(38,601)
Depreciation, Depletion And Amortization Including Impairment Charges	22,055	19,650	42,135	38,848
Consumer Services
Segment Reporting Information [Line Items]
Total revenues	75,056	84,284	152,502	171,488
Adjusted EBITDA	47,707	59,057	97,720	118,982
Depreciation, Depletion And Amortization Including Impairment Charges	229	1,042	566	2,329
Service
Segment Reporting Information [Line Items]
Total revenues	323,741	287,355	629,880	560,247
Service | Vonage Communications Platform
Segment Reporting Information [Line Items]
Total revenues	260,452	212,310	500,894	407,959
Service | Consumer Services
Segment Reporting Information [Line Items]
Total revenues	$ 63,289	$ 75,045	$ 128,986	$ 152,288

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Industry Segment and Geographic Information - Reconciliation of the Reportable Segments' Gross Margin (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting [Abstract]
Adjusted EBITDA	$ 48,805	$ 41,544	$ 96,972	$ 80,381
Interest expense	(7,081)	(9,321)	(14,379)	(17,403)
Depreciation and amortization	(22,284)	(20,692)	(42,701)	(41,177)
Amortization of costs to implement cloud computing arrangements	(961)	(668)	(1,857)	(1,277)
Share-based expense	(15,762)	(11,326)	(30,328)	(22,442)
Organizational transformation	0	(3,925)	0	(5,119)
Restructuring activities	(1,361)	0	(2,655)	0
Other non-recurring items	(563)	(2,549)	(2,454)	(3,905)
Income (loss) before income taxes	$ 793	$ (6,937)	$ 2,598	$ (10,942)

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Industry Segment and Geographic Information - Schedule of Long Lived Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Long-lived assets	$ 928,175	$ 940,854
United States
Segment Reporting Information [Line Items]
Long-lived assets	635,174	646,072
United Kingdom
Segment Reporting Information [Line Items]
Long-lived assets	291,929	293,457
Israel
Segment Reporting Information [Line Items]
Long-lived assets	$ 1,072	$ 1,325