NETSCOUT SYSTEMS INC (Form: 10-Q, Received: 02/06/2020 16:52:20)

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 10-Q

(Mark One)



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

For the quarterly period ended December 31, 2019



☐	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 000-26251

NETSCOUT SYSTEMS, INC.

(Exact Name of Registrant as Specified in Its Charter)



Delaware		04-2837575
(State or Other Jurisdiction of Incorporation or Organization)		(IRS Employer Identification No.)

310 Littleton Road, Westford, MA 01886

(978) 614-4000

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, $0.001 par value per share	NTCT	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 ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒ No ☐

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

Large accelerated filer ☒ Accelerated filer ☐

Non-accelerated filer ☐ Smaller reporting company ☐

Emerging growth company ☐

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

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

The number of shares outstanding of the registrant's common stock, par value $0.001 per share, as of January 30, 2020 was 73,855,221.

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NETSCOUT SYSTEMS, INC.

FORM 10-Q

FOR THE QUARTER ENDED DECEMBER 31, 2019

TABLE OF CONTENTS




CAUTIONARY STATEMENT CONCERNING FORWARD-LOOKING STATEMENTS		1

PART I: FINANCIAL INFORMATION

Item 1.	Unaudited Financial Statements:

	Consolidated Balance Sheets: At December 31, 2019 and March 31, 2019	2

	Consolidated Statements of Operations: For the three and nine months ended December 31, 2019 and 2018	3

	Consolidated Statements of Comprehensive Income (Loss): For the three and nine months ended December 31, 2019 and 2018	4

	Consolidated Statements of Stockholder's Equity: For the three and nine months ended December 31, 2019 and 2018	5

	Consolidated Statements of Cash Flows: For the nine months ended December 31, 2019 and 2018	7

	Notes to Consolidated Financial Statements	8

Item 2.	Management's Discussion and Analysis of Financial Condition and Results of Operations	28

Item 3.	Quantitative and Qualitative Disclosures About Market Risk	44

Item 4.	Controls and Procedures	44

PART II: OTHER INFORMATION

Item 1.	Legal Proceedings	45

Item 1A.	Risk Factors	45

Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	45

Item 3.	Defaults Upon Senior Securities	46

Item 4.	Mine Safety Disclosures	46

Item 5.	Other Information	46

Item 6.	Exhibits	47

SIGNATURES		48

Unless the context suggests otherwise, references in this Quarterly Report on Form 10-Q, or Quarterly Report, to "NetScout," the "Company," "we," "us," and "our" refer to NetScout Systems, Inc. and, where appropriate, our consolidated subsidiaries.

NetScout, the NetScout logo, Adaptive Service Intelligence and other trademarks or service marks of NetScout appearing in this Quarterly Report are the property of NetScout Systems, Inc. and/or its subsidiaries and/or affiliates in the United States and/or other countries. Any third-party trade names, trademarks and service marks appearing in this Quarterly Report are the property of their respective holders.

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Cautionary Statement Concerning Forward-Looking Statements

In addition to historical information, the following discussion and other parts of this Quarterly Report contain forward-looking statements under Section 21E of the Securities Exchange Act of 1934, as amended, and other federal securities laws. These forward-looking statements involve risks and uncertainties. These statements relate to future events or our future financial performance and are identified by terminology such as "may," "will," "could," "should," "expects," "plans," "intends," "seeks," "anticipates," "believes," "estimates," "potential" or "continue," or the negative of such terms or other comparable terminology. These statements are only predictions. You should not place undue reliance on these forward-looking statements. The outcome of the events described in these forward-looking statements is subject to risks, uncertainties, and other factors, including those described in Part I, Item 1A. Risk Factors in our Annual Report on Form 10-K for our fiscal year ended March 31, 2019, filed with the Securities and Exchange Commission, and elsewhere in this Quarterly Report. These factors may cause our actual results to differ materially from any forward-looking statement. Moreover, we operate in a very competitive and rapidly changing environment. New risks and uncertainties emerge from time to time, and it is not possible for us to predict all risks and uncertainties that could have an impact on the forward-looking statements contained in this Quarterly Report on Form 10-Q. We cannot assure you that the results, events, and circumstances reflected in the forward-looking statements will be achieved or occur, and actual results, events, or circumstances could differ materially from those described in the forward-looking statements.

The forward-looking statements made in this Quarterly Report on Form 10-Q relate only to events as of the date on which the statements are made. We undertake no obligation to update any forward-looking statements made in this Quarterly Report on Form 10-Q to reflect events or circumstances after the date of this Quarterly Report on Form 10-Q or to reflect new information or the occurrence of unanticipated events, except as required by law. We may not actually achieve the plans, intentions, or expectations disclosed in our forward-looking statements and you should not place undue reliance on our forward-looking statements. Our forward-looking statements do not reflect the potential impact of any future acquisitions, mergers, dispositions, joint ventures, or investments we may make.

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PART I: FINANCIAL INFORMATION

Item 1. Unaudited Financial Statements

NetScout Systems, Inc.

Consolidated Balance Sheets

(In thousands, except share data)



	December 31, 2019			March 31, 2019
	(Unaudited)
Assets
Current assets:
Cash and cash equivalents	$	287,660		$	409,632
Marketable securities	56,274			76,344
Accounts receivable and unbilled costs, net of allowance for doubtful accounts of $1,728 and $1,583 at December 31, 2019 and March 31, 2019, respectively	244,877			235,318
Inventories and deferred costs	24,977			26,270
Prepaid income taxes	14,454			18,000
Prepaid expenses and other current assets	25,807			35,658
Total current assets	654,049			801,222
Fixed assets, net	58,700			58,951
Operating lease right-of-use assets	65,738			—
Goodwill	1,718,496			1,715,485
Intangible assets, net	602,856			669,118
Deferred income taxes	7,034			7,218
Long-term marketable securities	2,561			1,012
Other assets	17,905			16,988
Total assets	$	3,127,339		$	3,269,994
Liabilities and Stockholders' Equity
Current liabilities:
Accounts payable	$	19,756		$	24,582
Accrued compensation	70,430			58,501
Accrued other	20,159			23,027
Income taxes payable	1,517			1,318
Deferred revenue and customer deposits	261,151			272,508
Current portion of operating lease liabilities	11,091			—
Total current liabilities	384,104			379,936
Other long-term liabilities	6,997			19,493
Deferred tax liability	115,470			124,229
Accrued long-term retirement benefits	35,808			36,284
Long-term deferred revenue and customer deposits	104,339			94,619
Operating lease liabilities, net of current portion	67,814			—
Long-term debt	450,000			550,000
Total liabilities	1,164,532			1,204,561
Commitments and contingencies (Note 14)
Stockholders' equity:
Preferred stock, $0.001 par value:
5,000,000 shares authorized; no shares issued or outstanding at December 31, 2019 and March 31, 2019	—			—
Common stock, $0.001 par value:
300,000,000 shares authorized; 121,679,117 and 119,760,132 shares issued and 73,855,221 and 77,610,361 shares outstanding at December 31, 2019 and March 31, 2019, respectively	122			120
Additional paid-in capital	2,873,702			2,828,922
Accumulated other comprehensive loss	(3,345		)	(2,639		)
Treasury stock at cost, 47,823,896 and 42,149,771 shares at December 31, 2019 and March 31, 2019, respectively	(1,255,675		)	(1,119,063		)
Retained earnings	348,003			358,093
Total stockholders' equity	1,962,807			2,065,433
Total liabilities and stockholders' equity	$	3,127,339		$	3,269,994

The accompanying notes are an integral part of these consolidated financial statements.

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NetScout Systems, Inc.

Consolidated Statements of Operations

(In thousands, except per share data)

(Unaudited)



	Three Months Ended						Nine Months Ended
	December 31,						December 31,
	2019			2018			2019			2018
Revenue:
Product	$	143,309		$	134,135		$	321,803		$	341,815
Service	116,715			111,873			340,666			333,101
Total revenue	260,024			246,008			662,469			674,916
Cost of revenue:
Product	34,197			40,517			90,500			107,974
Service	31,388			29,067			88,960			87,617
Total cost of revenue	65,585			69,584			179,460			195,591
Gross profit	194,439			176,424			483,009			479,325
Operating expenses:
Research and development	48,606			49,925			142,391			161,347
Sales and marketing	67,653			74,024			214,245			224,207
General and administrative	25,048			22,788			72,436			74,141
Amortization of acquired intangible assets	16,120			16,433			48,395			57,879
Restructuring charges	193			13,895			466			17,514
Impairment of intangible assets	—			—			—			35,871
Loss on divestiture of business	—			—			—			9,177
Total operating expenses	157,620			177,065			477,933			580,136
Income (loss) from operations	36,819			(641		)	5,076			(100,811		)
Interest and other expense, net:
Interest income	826			1,455			3,699			3,688
Interest expense	(4,629		)	(7,005		)	(16,167		)	(19,320		)
Other income (expense), net	(112		)	986			538			429
Total interest and other expense, net	(3,915		)	(4,564		)	(11,930		)	(15,203		)
Income (loss) before income tax expense (benefit)	32,904			(5,205		)	(6,854		)	(116,014		)
Income tax expense (benefit)	(3,821		)	(1,602		)	3,236			(23,479		)
Net income (loss)	$	36,725		$	(3,603	)	$	(10,090	)	$	(92,535	)
Basic net income (loss) per share	$	0.49		$	(0.05	)	$	(0.13	)	$	(1.17	)
Diluted net income (loss) per share	$	0.49		$	(0.05	)	$	(0.13	)	$	(1.17	)
Weighted average common shares outstanding used in computing:
Net income (loss) per share - basic	74,367			77,774			75,780			78,916
Net income (loss) per share - diluted	74,700			77,774			75,780			78,916

The accompanying notes are an integral part of these consolidated financial statements.

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NetScout Systems, Inc.

Consolidated Statements of Comprehensive Income (Loss)

(In thousands)

(Unaudited)



	Three Months Ended						Nine Months Ended
	December 31,						December 31,
	2019			2018			2019			2018
Net income (loss)	$	36,725		$	(3,603	)	$	(10,090	)	$	(92,535	)
Other comprehensive income (loss):
Cumulative translation adjustments	297			(1,170		)	(789		)	(3,319		)
Changes in market value of investments:
Changes in unrealized gains, net of taxes of $1, $12, $12 and $21, respectively	3			12			40			35
Total net change in market value of investments	3			12			40			35
Changes in market value of derivatives:
Changes in market value of derivatives, net of taxes (benefit) of $40, ($53), $6 and ($193), respectively	84			(162		)	18			(601		)
Reclassification adjustment for net (losses) gains included in net income (loss), net of (benefit) taxes of ($7), $51, $8 and $122, respectively	(30		)	157			25			382
Total net change in market value of derivatives	54			(5		)	43			(219		)
Other comprehensive income (loss)	354			(1,163		)	(706		)	(3,503		)
Total comprehensive income (loss)	$	37,079		$	(4,766	)	$	(10,796	)	$	(96,038	)

The accompanying notes are an integral part of these consolidated financial statements.

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NetScout Systems, Inc.

Consolidated Statements of Stockholders' Equity

(In thousands, except share data)

(Unaudited)



	Three Months Ended December 31, 2019
	Common Stock Voting			Additional Paid In Capital		Accumulated Other Comprehensive Income (Loss)			Treasury Stock				Retained Earnings			Total Stockholders' Equity

	Shares	Par Value							Shares	Stated Value
Balance, September 30, 2019	121,648,747	$	122	$	2,863,003	$	(3,699	)	46,810,700	$	(1,230,440	)	$	311,278		$	1,940,264
Net income													36,725			36,725
Unrealized net investment gains						3										3
Unrealized net gains on derivative financial instruments						54										54
Cumulative translation adjustments						297										297
Issuance of common stock pursuant to vesting of restricted stock units	30,370	—														—
Stock-based compensation expense for restricted stock units granted to employees				10,699												10,699
Repurchase of treasury stock									1,013,196	(25,235		)				(25,235		)
Balance, December 31, 2019	121,679,117	$	122	$	2,873,702	$	(3,345	)	47,823,896	$	(1,255,675	)	$	348,003		$	1,962,807

	Nine Months Ended December 31, 2019
	Common Stock Voting			Additional Paid In Capital		Accumulated Other Comprehensive Income (Loss)			Treasury Stock				Retained Earnings			Total Stockholders' Equity

	Shares	Par Value							Shares	Stated Value
Balance, March 31, 2019	119,760,132	$	120	$	2,828,922	$	(2,639	)	42,149,771	$	(1,119,063	)	$	358,093		$	2,065,433
Net loss													(10,090		)	(10,090		)
Unrealized net investment gains						40										40
Unrealized net gains on derivative financial instruments						43										43
Cumulative translation adjustments						(789		)								(789		)
Issuance of common stock pursuant to vesting of restricted stock units	1,621,350	2														2
Stock-based compensation expense for restricted stock units granted to employees				38,187												38,187
Issuance of common stock under employee stock purchase plan	297,635			6,593												6,593
Repurchase of treasury stock									5,674,125	(136,612		)				(136,612		)
Balance, December 31, 2019	121,679,117	$	122	$	2,873,702	$	(3,345	)	47,823,896	$	(1,255,675	)	$	348,003		$	1,962,807

The accompanying notes are an integral part of these consolidated financial statements.

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NetScout Systems, Inc.

Consolidated Statements of Stockholders' Equity

(In thousands, except share data)

(Unaudited)



	Three Months Ended December 31, 2018
	Common Stock Voting			Additional Paid In Capital		Accumulated Other Comprehensive Income (Loss)			Treasury Stock				Retained Earnings			Total Stockholders’ Equity
	Common Stock Voting								Treasury Stock
	Shares	Par Value							Shares	Stated Value
Balance, September 30, 2018	119,231,287	$	119	$	2,796,695	$	555		41,526,563	$	(1,102,481	)	$	341,710		$	2,036,598
Net loss													(3,603		)	(3,603		)
Unrealized net investment gains						12										12
Unrealized net losses on derivative financial instruments						(5		)								(5		)
Cumulative translation adjustments						(1,170		)								(1,170		)
Issuance of common stock pursuant to vesting of restricted stock units	185,742	—														—
Stock-based compensation expense for restricted stock units granted to employees				13,206												13,206
Repurchase of treasury stock				—					58,680	(1,561		)				(1,561		)
Balance, December 31, 2018	119,417,029	$	119	$	2,809,901	$	(608	)	41,585,243	$	(1,104,042	)	$	338,107		$	2,043,477

	Nine Months Ended December 31, 2018
	Common Stock Voting			Additional Paid In Capital		Accumulated Other Comprehensive Income (Loss)			Treasury Stock				Retained Earnings			Total Stockholders’ Equity
	Common Stock Voting								Treasury Stock
	Shares	Par Value							Shares	Stated Value
Balance, March 31, 2018	117,744,913	$	117	$	2,665,120	$	2,895		37,474,890	$	(995,843	)	$	396,493		$	2,068,782
Net loss													(92,535		)	(92,535		)
Unrealized net investment gains						35										35
Unrealized net losses on derivative financial instruments						(219		)								(219		)
Cumulative translation adjustments						(3,319		)								(3,319		)
Issuance of common stock pursuant to vesting of restricted stock units	1,369,122	2														2
Stock-based compensation expense for restricted stock units granted to employees				40,423												40,423
Issuance of common stock under employee stock purchase plan	302,994			7,575												7,575
Repurchase of treasury stock				96,783					4,110,353	(108,199		)				(11,416		)
Cumulative effect of adoption of ASU 2014-09													34,149			34,149
Balance, December 31, 2018	119,417,029	$	119	$	2,809,901	$	(608	)	41,585,243	$	(1,104,042	)	$	338,107		$	2,043,477

The accompanying notes are an integral part of these consolidated financial statements.

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NetScout Systems, Inc.

Consolidated Statements of Cash Flows

(In thousands)

(Unaudited)



	Nine Months Ended
	December 31,
	2019			2018
Cash flows from operating activities:
Net loss	$	(10,090	)	$	(92,535	)
Adjustments to reconcile net loss to cash provided by operating activities, net of the effects of acquisitions:
Depreciation and amortization	87,397			106,509
Operating lease right-of-use assets	7,872			—
Loss on divestiture of business	—			7,390
Loss on disposal of fixed assets	16			181
Deal-related compensation expense and accretion charges	—			102
Share-based compensation expense	39,961			44,142
Net change in fair value of contingent and contractual liabilities	541			—
Accretion of contingent consideration	(24		)	(64		)
Impairment of intangible assets	—			35,871
Deferred income taxes	(8,480		)	(27,667		)
Other losses (gains)	35			(206		)
Changes in assets and liabilities
Accounts receivable and unbilled costs	(9,554		)	(33,928		)
Due from related party	—			171
Inventories	(1,233		)	2,683
Prepaid expenses and other assets	10,957			5,582
Accounts payable	(4,647		)	582
Accrued compensation and other expenses	16,009			28,385
Operating lease liabilities	(9,690		)	—
Due to related party	—			232
Income taxes payable	24			(1,754		)
Deferred revenue	(1,304		)	(6,162		)
Net cash provided by operating activities	117,790			69,514
Cash flows from investing activities:
Purchase of marketable securities	(89,840		)	(184,104		)
Proceeds from sales and maturity of marketable securities	108,413			155,346
Purchase of fixed assets	(15,207		)	(19,462		)
Payments related to the divestiture of business	—			(2,911		)
Increase in deposits	(29		)	(97		)
Acquisition of businesses	(4,154		)	—
Capitalized software development costs	—			(132		)
Net cash used in investing activities	(817		)	(51,360		)
Cash flows from financing activities:
Issuance of common stock under stock plans	2			2
Payment of contingent consideration	—			(2,851		)
Repayment of long-term debt	(100,000		)	—
Treasury stock repurchases	(125,000		)	—
Tax withholding on restricted stock units	(11,612		)	(11,415		)
Net cash used in financing activities	(236,610		)	(14,264		)
Effect of exchange rate changes on cash and cash equivalents	(1,523		)	(5,380		)
Net decrease in cash and cash equivalents and restricted cash	(121,160		)	(1,490		)
Cash and cash equivalents and restricted cash, beginning of period	409,820			370,731
Cash and cash equivalents and restricted cash, end of period	$	288,660		$	369,241
Supplemental disclosures:
Cash paid for interest	$	14,019		$	17,410
Cash paid for income taxes	$	10,494		$	9,150
Non-cash transactions:
Transfers of inventory to fixed assets	$	2,290		$	2,152
Additions to property, plant and equipment included in accounts payable	$	119		$	1,190
Tenant improvement allowance	$	—		$	10,171
Issuance of common stock under employee stock plans	$	6,593		$	7,575
Contingent consideration related to acquisition, included in accrued other	$	1,000		$	—
Fair value of contingent consideration received as partial consideration for divestiture of business	$	—		$	2,257

The accompanying notes are an integral part of these consolidated financial statements.

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NetScout Systems, Inc.

Notes to Consolidated Financial Statements

(Unaudited)

NOTE 1 – BASIS OF PRESENTATION

The accompanying unaudited interim consolidated financial statements have been prepared by NetScout Systems, Inc. (NetScout or the Company). Certain information and footnote disclosures normally included in financial statements prepared under United States generally accepted accounting principles (GAAP) have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission (SEC). In the opinion of management, the unaudited interim consolidated financial statements include all adjustments, consisting of normal recurring adjustments, necessary for a fair statement of the Company's financial position and stockholders' equity, results of operations and cash flows. The year-end consolidated balance sheet data and statement of stockholders' equity were derived from the Company's audited financial statements, but do not include all disclosures required by GAAP. The results reported in these unaudited interim consolidated financial statements are not necessarily indicative of results that may be expected for the entire year. All significant intercompany accounts and transactions are eliminated in consolidation.

These unaudited interim consolidated financial statements should be read in conjunction with the audited consolidated financial statements, including the notes thereto, included in the Company’s Annual Report on Form 10-K for the fiscal year ended March 31, 2019 filed with the Securities and Exchange Commission on May 28, 2019.

Recent Accounting Pronouncements

In December 2019, the FASB issued ASU 2019-12, Simplifying the Accounting for Income Taxes. ASU 2019-12 simplifies the accounting for income taxes, eliminates certain exceptions within ASC 740, Income Taxes, and clarifies certain aspects of the current guidance to promote consistency among reporting entities. ASU 2019-12 is effective for fiscal years beginning after December 15, 2021. ASU 2019-12 is effective for NetScout beginning April 1, 2022. Most amendments within the standard are required to be applied on a prospective basis, while certain amendments must be applied on a retrospective or modified retrospective basis. The Company is currently assessing the effect that ASU 2019-12 will have on its financial position, results of operations, and disclosures.

In August 2018, the FASB issued ASU 2018-14, Compensation – Retirement Benefits – Defined Benefit Plans – General (Subtopic 715-20): Disclosure Framework—Changes to the Disclosure Requirements for Defined Benefit Plans. This ASU adds, modifies and clarifies several disclosure requirements for employers that sponsor defined benefit pension or other postretirement plans. This guidance is effective for fiscal years ending after December 15, 2020. ASU 2018-14 is effective for NetScout beginning April 1, 2021. Early adoption is permitted. The Company is currently assessing the effect that ASU 2018-14 will have on its financial position, results of operations, and disclosures.

In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement. ASU 2018-13 adds, modifies and removes several disclosure requirements relative to the three levels of inputs used to measure fair value in accordance with Topic 820, Fair Value Measurement. This guidance is effective for fiscal years beginning after December 15, 2019, including interim periods within that fiscal year. ASU 2018-13 is effective for NetScout beginning April 1, 2020. Early adoption is permitted. The Company is currently assessing the effect that ASU 2018-13 will have on its financial position, results of operations, and disclosures.

In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging (Topic 815), Targeted Improvements to Accounting for Hedging Activities (ASU 2017-12). ASU 2017-12 provides guidance to better align an entity's risk management activities and financial reporting for hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships and the presentation of hedge results. The amendments expand and refine hedge accounting for both non-financial and financial risk components and align the recognition and presentation of the effects of the hedging instrument and the hedged item in the financial statements. This standard is effective for financial statements issued for fiscal years beginning after December 15, 2018. The Company adopted ASU 2017-12 effective April 1, 2019. The adoption has had an immaterial impact on the Company's consolidated financial statements.

In June 2016, the FASB issued ASU 2016-13, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (ASU 2016-13) and also issued subsequent amendments to the initial guidance: ASU 2018-19, ASU 2019-04, ASU 2019-05 and ASU 2019-11 (collectively, Topic 326). Topic 326 requires measurement and recognition of expected credit losses for financial assets held. Topic 326 is effective for annual periods beginning after December 15, 2019, and interim periods therein. Topic 326 is effective for NetScout beginning April 1, 2020, and earlier adoption is permitted. The Company is currently assessing the effect that Topic 326 will have on its financial position, results of operations, and disclosures.

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) Section A - Leases: Amendments to the FASB Accounting Standards Codification (ASU 2016-02) and issued subsequent amendments to initial guidance in July 2018 within

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ASU 2018-10, Codification Improvements to Topic 842, Leases and ASU 2018-11, Leases (Topic 842): Targeted Improvements (collectively, ASC 842). ASC 842 aims to increase transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. The Company adopted the guidance as of April 1, 2019 using the modified retrospective method. Please refer to Note 13, "Leases" for further details.

NOTE 2 – REVENUE RECOGNITION

Revenue Recognition Policy

The Company exercises judgment and uses estimates in connection with determining the amounts of product and service revenues to be recognized in each accounting period.

The Company derives revenues primarily from the sale of network management tools and security solutions for service provider and enterprise customers, which include hardware, software and service offerings. The majority of the Company's product sales consist of hardware products with embedded software that are essential to providing customers the intended functionality of the solutions. The Company also sells software offerings decoupled from the underlying hardware and software solutions to provide customers with enhanced functionality.

The Company accounts for revenue once a legally enforceable contract with a customer has been approved by the parties and the related promises to transfer products or services have been identified. A contract is defined by the Company as an arrangement with commercial substance identifying payment terms, each party’s rights and obligations regarding the products or services to be transferred and the amount the Company deems probable of collection. Customer contracts may include promises to transfer multiple products and services to a customer. Determining whether the products and services are considered distinct performance obligations that should be accounted for separately or as one combined performance obligation may require significant judgment. Revenue is recognized when control of the products or services are transferred to the Company's customers, in an amount that reflects the consideration the Company expects to be entitled to in exchange for products and services.

Product revenue is typically recognized upon shipment, provided a legally enforceable contract exists, control has passed to the customer, and in the case of software products, when the customer has the rights and ability to access the software; and collection of the related receivable is probable. If any significant obligations to the customer remain post-delivery, typically involving obligations relating to installation and acceptance by the customer, revenue recognition is deferred until such obligations have been fulfilled. The Company's service offerings include installation, integration, extended warranty and maintenance services, post-contract customer support, stand-ready software-as-a-service (SAAS) and other professional services including consulting and training. The Company generally provides software and/or hardware support as part of product sales. Revenue related to the initial bundled software and hardware support is recognized ratably over the support period. In addition, customers can elect to purchase extended support agreements for periods after the initial software/hardware warranty expiration. Support services generally include rights to unspecified upgrades (when and if available), telephone and internet-based support, updates, bug fixes and hardware repair and replacement. Consulting services are recognized upon delivery or completion of performance depending on the terms of the underlying contract. Reimbursements of out-of-pocket expenditures incurred in connection with providing consulting services are included in services revenue, with the offsetting expense recorded in cost of service revenue. Training services include on-site and classroom training. Training revenues are recognized upon delivery of the training.

Generally, the Company's contracts are accounted for individually. However, when contracts are closely interrelated and dependent on each other, it may be necessary to account for two or more contracts as one to reflect the substance of the group of contracts.

Bundled arrangements are concurrent customer purchases of a combination of the Company's product and service offerings that may be delivered at various points in time. The Company allocates the transaction price among the performance obligations in an amount that depicts the relative standalone selling prices (SSP) of each obligation. Judgment is required to determine the SSP for each distinct performance obligation. The Company uses a range of amounts to estimate SSP when it sells each of the products and services separately based on the element’s historical pricing. The Company also considers its overall pricing objectives and practices across different sales channels and geographies, and market conditions. Generally, the Company has established SSP for a majority of its service elements based on historical standalone sales. In certain instances, the Company has established SSP for services based upon an estimate of profitability and the underlying cost to fulfill those services. Further, for certain service engagements, the Company considers quoted prices as part of multi-element arrangements of those engagements as a basis for establishing SSP. SSP has been established for product elements as the average or median selling price the element was recently sold for, whether sold alone or sold as part of a multiple element transaction. The Company reviews sales of the product elements on a quarterly basis and updates, when appropriate, its SSP for such elements to ensure that it reflects recent pricing experience. The Company's products are distributed through its direct sales force and

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indirect distribution channels through alliances with resellers and distributors. Revenue arrangements with resellers and distributors are recognized on a sell-in basis; that is, when control of the product transfers to the reseller or distributor. The Company records consideration given to a reseller or distributor as a reduction of revenue to the extent they have recorded revenue from the reseller or distributor. With limited exceptions, the Company's return policy does not allow product returns for a refund. Returns have been insignificant to date. In addition, the Company has a history of successfully collecting receivables from its resellers and distributors.

During the nine months ended December 31, 2019, the Company recognized revenue of $240.5 million related to the Company's deferred revenue balance reported at March 31, 2019.

Performance Obligations

Customer contracts may include promises to transfer multiple products and services to a customer. Determining whether the products and services are considered distinct performance obligations that should be accounted for separately or as one combined performance obligation may require significant judgment. The transaction price is allocated among performance obligations in bundled contracts in an amount that depicts the relative standalone selling prices of each obligation.

For contracts involving distinct hardware and software licenses, the performance obligations are satisfied at a point in time when control is transferred to the customer. For standalone maintenance and post-contract support (PCS) the performance obligation is satisfied ratably over the contract term as a stand-ready obligation. For consulting and training services, the performance obligation may be satisfied over the contract term as a stand-ready obligation, satisfied over a period of time as those services are delivered, or satisfied at the completion of the service when control has transferred, or the services have expired unused.

Payments for hardware, software licenses, one-year maintenance, PCS and consulting services, are typically due up front with payment terms of 30 to 90 days. However, the Company does have contracts pursuant to which billings occur ratably over a period of years following the transfer of control for the contracted performance obligations. Payments on multi-year maintenance, PCS and consulting services are typically due in annual installments over the contract term. The Company did not have any material variable consideration such as obligations for returns or refunds at December 31, 2019.

At December 31, 2019, the Company had total deferred revenue of $365.5 million, which represents the aggregate total contract price allocated to undelivered performance obligations. The Company expects to recognize $261.2 million, or 71%, of this revenue during the next 12 months, and expects to recognize the remaining $104.3 million, or 29%, of this revenue thereafter.

Because of NetScout's revenue recognition policies, there are circumstances for which the Company does not recognize revenue relating to sales transactions that have been billed, and the related account receivable has not been collected. While the receivable represents an enforceable obligation, for balance sheet presentation purposes, the Company has not recognized the deferred revenue, or the related account receivable and no amounts appear in the consolidated balance sheets for such transactions because control of the underlying deliverable has not transferred. The aggregate amount of unrecognized accounts receivable and deferred revenue was $4.9 million and $23.3 million at December 31, 2019 and March 31, 2019, respectively.

NetScout expects that the amount of billed and unbilled deferred revenue will change from quarter to quarter for several reasons, including the specific timing, duration and size of large customer support and service agreements, varying billing cycles of such agreements, the specific timing of customer renewals, and foreign currency fluctuations. The Company did not have any significant financing components, or variable consideration or performance obligations satisfied in a prior period recognized during the nine months ended December 31, 2019.

Contract Balances

The Company may receive payments from customers based on a billing schedule as established by the Company’s contracts. Contract assets relate to performance obligations where control has transferred to the customer in advance of scheduled billings. The Company records unbilled accounts receivable representing the right to consideration in exchange for goods or services that have been transferred to a customer conditional on the passage of time. Deferred revenue relates to payments received in advance of performance under the contract.

Costs to Obtain Contracts

The Company has determined that the only significant incremental costs incurred to obtain contracts with customers within the scope of Topic 606 are sales commissions paid to its employees. Sales commissions are recorded as an asset and amortized to expense ratably over the remaining performance periods of the related contracts with remaining performance obligations. The Company expenses costs as incurred for sales commissions when the amortization period would have been one year or less.

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At December 31, 2019, the consolidated balance sheet included $6.8 million in assets related to sales commissions to be expensed in future periods. A balance of $3.8 million was included in prepaid expenses and other current assets, and a balance of $3.0 million was included in other assets in the Company's consolidated balance sheet at December 31, 2019. At March 31, 2019, the consolidated balance sheet included $6.4 million in assets related to sales commissions to be expensed in future periods. A balance of $3.8 million was included in prepaid expenses and other current assets, and a balance of $2.6 million was included in other assets in the Company's consolidated balance sheet at March 31, 2019.

During the three and nine months ended December 31, 2019 and 2018, respectively, the Company recognized $1.6 million, $1.5 million, $4.8 million, and $4.8 million of amortization related to this sales commission asset, which is included in the sales and marketing expense line in the Company's consolidated statements of operations.

NOTE 3 – CONCENTRATION OF CREDIT RISK AND SIGNIFICANT CUSTOMERS

Financial instruments that potentially subject the Company to concentration of credit risk consist primarily of investments, trade accounts receivable and accounts payable. The Company's cash, cash equivalents, and marketable securities are placed with financial institutions with high credit standings.

At December 31, 2019 and March 31, 2019, the Company had no direct customers or indirect channel partners which accounted for more than 10% of the accounts receivable balance.

During the three and nine months ended December 31, 2019, no direct customers or indirect channel partners accounted for more than 10% of the Company's total revenue. During the three months ended December 31, 2018, one direct customer, Verizon, accounted for more than 10% of the Company's total revenue, while no indirect channel partners accounted for more than 10% of total revenue. During the nine months ended December 31, 2018, no direct customers or indirect channel partners accounted for more than 10% of total revenue.

Historically, the Company has not experienced any significant failure of its customers' ability to meet their payment obligations nor does the Company anticipate material non-performance by its customers in the future; accordingly, the Company does not require collateral from its customers. However, if the Company's assumptions are incorrect, there could be an adverse impact on its allowance for doubtful accounts.

NOTE 4 – SHARE-BASED COMPENSATION

The following is a summary of share-based compensation expense including restricted stock units granted pursuant to the Company's 2007 Equity Incentive Plan, as amended (Amended 2007 Plan), and employee stock purchases made under the Company's 2011 Employee Stock Purchase Plan, as amended, (ESPP), based on estimated fair values within the applicable cost and expense lines identified below (in thousands):



	Three Months Ended				Nine Months Ended
	December 31,				December 31,
	2019		2018		2019		2018
Cost of product revenue	$	231	$	375	$	843	$	1,188
Cost of service revenue	1,275		1,519		4,584		4,694
Research and development	3,437		3,979		12,076		13,544
Sales and marketing	3,910		4,649		13,333		15,051
General and administrative	2,508		3,237		9,125		9,665
	$	11,361	$	13,759	$	39,961	$	44,142

On September 12, 2019, the Company’s stockholders approved the 2019 Equity Incentive Plan (2019 Plan), which replaced the Company’s Amended 2007 Plan. The 2019 Plan permits the granting of incentive and nonstatutory stock options, stock appreciation rights, restricted stock awards, restricted stock unit awards, and other stock awards, collectively referred to as "share-based awards." Periodically, the Company grants share-based awards to employees and officers of the Company and its subsidiaries. The Company accounts for these share-based awards in accordance with GAAP, which requires the measurement and recognition of compensation expense based on estimated fair values for all share-based payment awards made to its employees and directors. Share-based award grants are generally measured at fair value on the date of grant based on the number of shares granted and the quoted price of the Company’s common stock. Such value is recognized as a cost of revenue or an operating expense over the corresponding vesting period. At September 12, 2019, there was a total of 6,794,651 shares reserved for issuance under the 2019 Plan, which consisted of 5,500,000 new shares plus 1,294,651 shares that remained available for grant under the Amended 2007 Plan as of September 12, 2019, the effective date of the 2019 Plan.

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The aggregate number of shares available for issuance under the 2019 Plan will increase by 2.76 shares for each share: (i) subject to an award granted under the Amended 2007 Plan or 2019 Plan that are not issued because such award expires or otherwise terminates without all of the shares covered by such award having been issued; (ii) any shares subject to an award under the Amended 2007 Plan or 2019 Plan that are not issued because such award is settled in cash; (iii) any shares issued pursuant to an award granted under the Amended 2007 Plan or 2019 Plan that are forfeited back to or repurchased by the Company because of failure to vest; and (iv) any shares that are reacquired or withheld by the Company to satisfy tax withholding obligations in connection with common stock issued pursuant to restricted stock, restricted stock units, performance stock awards, or other stock awards granted under the Amended 2007 Plan and 2019 Plan. Furthermore, the share reserve under the 2019 Plan is reduced by one share for each share of common stock issued pursuant to a stock option or stock appreciation right and 2.76 shares for each share of common stock issued pursuant to restricted stock, restricted stock units, performance stock awards, or other stock awards granted under the 2019 Plan on or after September 12, 2019. At December 31, 2019, there were 6,902,159 shares of common stock available for grant under the 2019 Plan.

The 2019 Plan is administered by the Compensation Committee of the Board of Directors. The Compensation Committee operates under guidelines established by the Board of Directors. The Compensation Committee has the authority to select the employees and consultants to whom awards are granted (except for directors and executive officers) and determine the terms of each award, including the number of shares of common stock subject to the award.

Share-based awards generally vest over four years. The exercise price of stock options shall not be less than 100% of the fair market value of the common stock at the date of grant (110% for incentive stock options granted to holders of more than 10% of the voting stock of NetScout). The term of stock options granted cannot exceed seven years (five years for incentive stock options granted to holders of more than 10% of the voting stock of NetScout).

Employee Stock Purchase Plan – The Company maintains the ESPP for all eligible employees as described in the Company's Annual Report on Form 10-K for the year ended March 31, 2019. Under the ESPP, shares of the Company's common stock may be purchased on the last day of each bi-annual offering period at 85% of the fair value on the last day of such offering period. The offering periods run from March 1st through August 31st and from September 1st through the last day of February each year. During the nine months ended December 31, 2019, employees purchased 297,635 shares under the ESPP and the value per share was $22.15.

NOTE 5 – CASH, CASH EQUIVALENTS, RESTRICTED CASH AND MARKETABLE SECURITIES

The Company considers all highly liquid investments purchased with an original maturity of three months or less to be cash equivalents and those investments with original maturities greater than three months to be marketable securities. Cash and cash equivalents consisted of U.S. government and municipal obligations, commercial paper, money market instruments and cash maintained with various financial institutions at December 31, 2019 and March 31, 2019.

Cash, Cash Equivalents and Restricted Cash

The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the consolidated balance sheets that sum to the total of the same such amounts shown in the consolidated statements of cash flows (in thousands):



	December 31, 2019		March 31, 2019		December 31, 2018		March 31, 2018
Cash and cash equivalents	$	287,660	$	409,632	$	369,054	$	369,821
Restricted cash	1,000		188		187		910
Total cash, cash equivalents and restricted cash	$	288,660	$	409,820	$	369,241	$	370,731

The Company's restricted cash includes cash balances which are legally or contractually restricted. The Company's restricted cash is included within prepaid and other current assets and consists of amounts related to holdbacks associated with prior acquisitions.

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Marketable Securities

The following is a summary of marketable securities held by NetScout at December 31, 2019, classified as short-term and long-term (in thousands):



	Amortized Cost		Unrealized Gains		Fair Value
Type of security:
U.S. government and municipal obligations	$	27,139	$	48	$	27,187
Commercial paper	24,911		—		24,911
Corporate bonds	4,167		9		4,176
Total short-term marketable securities	56,217		57		56,274
U.S. government and municipal obligations	2,549		12		2,561
Total long-term marketable securities	2,549		12		2,561
Total marketable securities	$	58,766	$	69	$	58,835

The following is a summary of marketable securities held by NetScout at March 31, 2019, classified as short-term and long-term (in thousands):



	Amortized Cost		Unrealized Gains		Fair Value
Type of security:
U.S. government and municipal obligations	$	27,610	$	12	$	27,622
Commercial paper	48,722		—		48,722
Total short-term marketable securities	76,332		12		76,344
Corporate bonds	1,007		5		1,012
Total long-term marketable securities	1,007		5		1,012
Total marketable securities	$	77,339	$	17	$	77,356

Contractual maturities of the Company's marketable securities held at December 31, 2019 and March 31, 2019 were as follows (in thousands):



	December 31, 2019		March 31, 2019
Available-for-sale securities:
Due in 1 year or less	$	56,274	$	76,344
Due after 1 year through 5 years	2,561		1,012
	$	58,835	$	77,356

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NOTE 6 – FAIR VALUE MEASUREMENTS

The fair value hierarchy has three levels based on the reliability of the inputs used to determine fair value. Level 1 refers to fair values determined based on quoted prices in active markets for identical assets. Level 2 refers to fair values estimated using significant other observable inputs, and Level 3 includes fair values estimated using significant non-observable inputs. The following tables present the Company's financial assets and liabilities measured on a recurring basis using the fair value hierarchy at December 31, 2019 and March 31, 2019 (in thousands):



	Fair Value Measurements at
	December 31, 2019
	Level 1		Level 2			Level 3			Total
ASSETS:
Cash and cash equivalents	$	287,660	$	—		$	—		$	287,660
U.S. government and municipal obligations	29,748		—			—			29,748
Commercial paper	—		24,911			—			24,911
Corporate bonds	4,176		—			—			4,176
Derivative financial instruments	—		93			—			93
Contingent consideration	—		—			245			245
	$	321,584	$	25,004		$	245		$	346,833
LIABILITIES:
Contingent purchase consideration	$	—	$	—		$	(1,000	)	$	(1,000	)
Derivative financial instruments	—		(11		)	—			(11		)
	$	—	$	(11	)	$	(1,000	)	$	(1,011	)



	Fair Value Measurements at
	March 31, 2019
	Level 1		Level 2			Level 3		Total
ASSETS:
Cash and cash equivalents	$	409,632	$	—		$	—	$	409,632
U.S. government and municipal obligations	10,732		16,890			—		27,622
Commercial paper	—		48,722			—		48,722
Corporate bonds	1,012		—			—		1,012
Derivative financial instruments	—		58			—		58
Contingent consideration	—		—			762		762
	$	421,376	$	65,670		$	762	$	487,808
LIABILITIES:
Derivative financial instruments	$	—	$	(68	)	$	—	$	(68	)
	$	—	$	(68	)	$	—	$	(68	)

This hierarchy requires the Company to use observable market data, when available, and to minimize the use of unobservable inputs when determining fair value. On a recurring basis, the Company measures certain financial assets and liabilities at fair value, including marketable securities and derivative financial instruments.

The Company's Level 1 investments are classified as such because they are valued using quoted market prices or alternative pricing sources with reasonable levels of price transparency.

The Company's Level 2 investments are classified as such because fair value is calculated using market observable data for similar but not identical instruments, or a discounted cash flow model using the contractual interest rate as compared to the underlying interest yield curve. The Company classifies municipal obligations as Level 2 because the fair values are determined using quoted prices from markets the Company considers to be inactive. Commercial paper is classified as Level 2 because the Company uses market information from similar but not identical instruments and discounted cash flow models based on interest rate yield curves to determine fair value. The Company's derivative financial instruments consist of forward foreign exchange contracts and are classified as Level 2 because the fair values of these derivatives are determined using models based

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on market observable inputs, including spot prices for foreign currencies and credit derivatives, as well as an interest rate factor.

The Company's Level 3 assets consist of contingent consideration related to the divestiture of the Company's handheld network test (HNT) tools business in September 2018. The contingent consideration represents potential future earnout payments to the Company of up to $4.0 million over two years that are contingent on the HNT tools business achieving certain milestones. The Company recorded a $0.5 million change in the fair value of the contingent consideration for the nine months ended December 31, 2019, which is included in other income (expense), net within the Company's consolidated statement of operations for the nine months ended December 31, 2019. The fair value of the contingent consideration was $0.2 million and $0.8 million at December 31, 2019 and March 31, 2019 respectively. The contingent consideration is included in other assets within the Company’s consolidated balance sheet at December 31, 2019 and March 31, 2019.

The Company's Level 3 liability consists of contingent purchase consideration related to the acquisition of certain assets and liabilities of Eastwind Networks, Inc. (Eastwind) in April 2019. The contingent purchase consideration represents amounts deposited into an escrow account, which was established to cover damages NetScout may suffer related to any liabilities that NetScout did not agree to assume or as a result of the breach of representations and warranties of the seller as described in the acquisition agreement. The contingent purchase consideration is included as accrued other in the Company's consolidated balance sheet at December 31, 2019.

The following table sets forth a reconciliation of changes in the fair value of the Company's Level 3 financial assets and liabilities for the nine months ended December 31, 2019 (in thousands):



	Contingent Consideration			Contingent Purchase Consideration
Balance at March 31, 2019	$	762		$	—
Additions to Level 3	—			(1,000		)
Change in fair value of contingent consideration	(517		)	—
Balance at December 31, 2019	$	245		$	(1,000	)

Accretion income related to the contingent consideration received as partial consideration for the divestiture of the HNT tools business for the nine months ended December 31, 2019 was $24 thousand and was included within interest income.

NOTE 7 – INVENTORIES

Inventories are stated at the lower of actual cost or net realizable value. Cost is determined by using the first in, first out (FIFO) method. Inventories consist of the following (in thousands):



	December 31, 2019		March 31, 2019
Raw materials	$	14,980	$	14,432
Work in process	121		1,181
Finished goods	4,473		7,738
Deferred costs	5,403		2,919
	$	24,977	$	26,270

NOTE 8 - ACQUISITIONS & DIVESTITURES

Eastwind Acquisition

On April 3, 2019 (the Eastwind Closing Date), the Company completed the acquisition of certain assets and liabilities of Eastwind for $5.2 million. Eastwind's breach analytics cloud analyzes data to identify malicious activity, insider threats and data leakage.

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The Company completed the purchase accounting related to the Eastwind acquisition as of June 30, 2019. Goodwill and intangible assets recorded as part of the acquisition are deductible for tax purposes.



Initial cash payment	$	4,154
Estimated fair value of contingent purchase consideration	1,000
Estimated purchase price	$	5,154

The following table reflects the estimated fair value of assets acquired and liabilities assumed (in thousands):



Property, plant and equipment	$	17
Intangible assets	4,230
Accrued other liabilities	(96		)
Goodwill	$	1,003

Of the total consideration, $1.0 million was deposited into an escrow account. The escrow account was established to cover damages NetScout may suffer related to any liabilities that NetScout did not agree to assume or as a result of the breach of representations and warranties of the seller as described in the acquisition agreement. Generally, indemnification claims that Eastwind would be liable for are limited to the total amount of the escrow account, which shall be the sole source for the satisfaction of any damages to the Company for such claims, but such limitation does not apply with respect to the seller's breach of certain fundamental representations or related to other specified indemnity items, for which certain of Eastwind's shareholders may be liable for additional amounts in excess of the escrow amount. Except to the extent that valid indemnification claims are made prior to such time, the $1.0 million will be paid to the seller in April 2020.

In connection with the Eastwind acquisition, certain former employees of Eastwind received cash retention payments totaling $0.3 million on the Eastwind Closing Date. Because these employees were not required to provide future services to the Company, the cash retention payments were accounted for as part of the purchase price. These former Eastwind employees will also receive cash retention payments subject to such employee's continued employment with the Company through the next regularly scheduled payroll dates following each of the first and second anniversaries of the Eastwind Closing Date. The cash retention payment liability related to these future cash retention payments were accounted for separately from the business combination as the cash retention payment is automatically forfeited upon termination of employment. The Company will record the liability over the period it is earned as compensation expense for post-combination services.

The fair value of intangible assets was based on a valuation using a cost method approach. The underlying assumptions include estimates of cost to replace or reproduce the asset, less adjustments for physical deterioration and functional obsolescence, if relevant. This fair value measurement was based on significant inputs not observable in the market and thus represents Level 3 fair value measurements.

The following table reflects the fair value of the acquired identifiable intangible asset and related estimated useful life (in thousands):



	Fair Value		Useful Life (Years)
Developed technology	$	4,230	10

The average useful life of the developed technology acquired from Eastwind is 10 years.

HNT Tools Business Divestiture

On September 14, 2018 (the HNT Divestiture Date), the Company divested its HNT tools business. As part of the divestiture, the Company recorded contingent consideration which represents potential future earnout payments of up to $4.0 million over two years that are contingent on the HNT tools business achieving certain milestones. The Company recorded a $0.5 million change in the fair value of the contingent consideration, which is included in other income (expense), net within the Company’s consolidated statements of operations for the nine months ended December 31, 2019. The fair value of the contingent consideration was $0.2 million and $0.8 million at December 31, 2019 and March 31, 2019, respectively. The contingent consideration is included within other assets within the Company’s consolidated balance sheet.

In connection with the divestiture, the Company has entered into a transitional services agreement with the buyer to provide certain services for a period of up to eighteen months. Income (expense) associated with the transitional services agreement for the three and nine months ended December 31, 2019 and 2018 was $(25) thousand, $1.1 million, $1.2 million, and $1.3 million respectively. Transitional services agreement income is included within other income (expense), net in the Company's consolidated statements of operations.

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NOTE 9 – GOODWILL AND INTANGIBLE ASSETS

Goodwill

The Company assesses goodwill for impairment at the reporting unit level at least annually, or on an interim basis if an event occurs or circumstances change that would, more likely than not, reduce the fair value of the reporting unit below its carrying value. The Company completed its annual impairment test on January 31, 2019.

Reporting units are determined based on the components of a Company's operating segments that constitute a business for which financial information is available and for which operating results are regularly reviewed by segment management. Through the first half of fiscal year 2020, the Company had two reporting units: (1) Service Assurance and (2) Security. As part of its continued integration efforts, effective during the third quarter of fiscal year 2020, the Company reorganized its business units. As a result of this change, the Company reduced the number of reporting units from two reporting units to one reporting unit. The former Service Assurance and Security reporting units were combined as result of organizational changes made to fully integrate the resources and assets of the Service Assurance and Security business units.

The Company completed an assessment of any potential impairment for all reporting units immediately prior to and after the reporting unit change and determined that no impairment existed. As such, no impairment charges were recognized during the nine months ended December 31, 2019.

At December 31, 2019 and March 31, 2019, the carrying amount of goodwill was $1.7 billion. The change in the carrying amount of goodwill for the nine months ended December 31, 2019 is due to the acquisition of Eastwind and the impact of foreign currency translation adjustments related to asset balances that are recorded in currencies other than the U.S. Dollar.

The following table summarizes the changes in the carrying amount of goodwill for the nine months ended December 31, 2019 as follows (in thousands):



Balance at March 31, 2019	$	1,715,485
Goodwill attributed to the Eastwind acquisition	1,003
Foreign currency translation impact	2,008
Balance at December 31, 2019	$	1,718,496

Intangible Assets

The net carrying amounts of intangible assets were $602.9 million and $669.1 million at December 31, 2019 and March 31, 2019, respectively. Intangible assets acquired in a business combination are recorded under the acquisition method of accounting at their estimated fair values at the date of acquisition. The Company amortizes intangible assets over their estimated useful lives, except for the acquired trade name which resulted from the Network General acquisition, which has an indefinite life and thus is not amortized. The carrying value of the indefinite-lived trade name is evaluated for potential impairment annually, or more frequently if events or changes in circumstances indicate that the asset might be impaired. The Company completed its annual impairment test on January 31, 2019.

During the three months ended June 30, 2018, the Company performed a quantitative analysis on certain intangible assets related to the HNT tools business, which has since been divested. The fair value for the intangible assets related to the HNT tools business was calculated considering a range of potential transaction prices which the Company considers to be a Level 3 measurement. The fair value of these intangible assets was determined to be less than the carrying value, and as a result, the Company recognized an impairment charge of $35.9 million in the nine months ended December 31, 2018. The impairment charge was recorded within a separate operating expense line item in the Company's consolidated statements of operations during the nine months ended December 31, 2018.

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Intangible assets include the indefinite-lived trade name with a carrying value of $18.6 million and the following amortizable intangible assets at December 31, 2019 (in thousands):



	Cost		Accumulated Amortization			Net
Developed technology	$	245,850	$	(186,356	)	$	59,494
Customer relationships	770,696		(261,595		)	509,101
Distributor relationships and technology licenses	6,843		(6,104		)	739
Definite-lived trademark and trade name	39,205		(24,894		)	14,311
Core technology	7,192		(7,016		)	176
Net beneficial leases	336		(336		)	—
Non-compete agreements	292		(292		)	—
Leasehold interest	500		(500		)	—
Backlog	16,327		(16,327		)	—
Capitalized software	3,317		(3,152		)	165
Other	1,208		(938		)	270
	$	1,091,766	$	(507,510	)	$	584,256

Intangible assets include the indefinite-lived trade name with a carrying value of $18.6 million and the following amortizable intangible assets at March 31, 2019 (in thousands):



	Cost		Accumulated Amortization			Net
Developed technology	$	242,259	$	(168,289	)	$	73,970
Customer relationships	772,969		(218,043		)	554,926
Distributor relationships and technology licenses	6,882		(5,237		)	1,645
Definite-lived trademark and trade name	39,304		(20,586		)	18,718
Core technology	7,192		(6,845		)	347
Net beneficial leases	336		(336		)	—
Non-compete agreements	292		(292		)	—
Leasehold interest	500		(500		)	—
Backlog	16,397		(16,397		)	—
Capitalized software	3,317		(2,690		)	627
Other	1,208		(923		)	285
	$	1,090,656	$	(440,138	)	$	650,518

Amortization included as cost of product revenue consists of amortization of developed technology, distributor relationships and technology licenses, core technology and software. Amortization included as operating expense consists of all other intangible assets. The following table provides a summary of amortization expense for the three and nine months ended December 31, 2019 and 2018, respectively (in thousands):



	Three Months Ended				Nine Months Ended
	December 31,				December 31,
	2019		2018		2019		2018
Amortization of intangible assets included as:
Cost of product revenue	$	6,564	$	8,176	20,043		25,858
Operating expense	16,125		16,438		48,410		57,894
	$	22,689	$	24,614	$	68,453	$	83,752

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The following is the expected future amortization expense at December 31, 2019 for the fiscal years ending March 31 (in thousands):



2020 (remaining three months)	$	22,682
2021	79,857
2022	69,462
2023	61,758
2024	53,667
Thereafter	296,830
	$	584,256

The weighted-average amortization period of developed technology and core technology is 11.3 years. The weighted-average amortization period for customer and distributor relationships is 15.9 years. The weighted-average amortization period for trademarks and trade names is 8.6 years. The weighted-average amortization period for capitalized software is 3.0 years. The weighted-average amortization period for amortizing all intangible assets is 14.6 years.

NOTE 10 – DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES

NetScout operates internationally and, in the normal course of business, is exposed to fluctuations in foreign currency exchange rates. The exposures result from costs that are denominated in currencies other than the U.S. Dollar, primarily the Euro, British Pound, Canadian Dollar, and Indian Rupee. The Company manages its foreign cash flow risk by hedging forecasted cash flows for operating expenses denominated in foreign currencies for up to twelve months, within specified guidelines through the use of forward contracts. The Company enters into foreign currency exchange contracts to hedge cash flow exposures from costs that are denominated in currencies other than the U.S. Dollar. These hedges are designated as cash flow hedges at inception.

All of the Company's derivative instruments are utilized for risk management purposes, and the Company does not use derivatives for speculative trading purposes. These contracts will mature over the next twelve months and are expected to impact earnings on or before maturity.

The notional amounts and fair values of derivative instruments in the consolidated balance sheets at December 31, 2019 and March 31, 2019 were as follows (in thousands):



	Notional Amounts (a)				Prepaid Expenses and Other Current Assets				Accrued Other
	December 31, 2019		March 31, 2019		December 31, 2019		March 31, 2019		December 31, 2019		March 31, 2019
Derivatives Designated as Hedging Instruments:
Forward contracts	$	4,883	$	4,550	$	93	$	58	$	11	$	68


(a)	Notional amounts represent the gross contract/notional amount of the derivatives outstanding.

The following table provides the effect foreign exchange forward contracts had on other comprehensive income (loss) (OCI) and results of operations for the three months ended December 31, 2019 and 2018 (in thousands):



	Gain (Loss) Recognized in OCI on Derivative (a)					Gain (Loss) Reclassified from Accumulated OCI into Income (b)
	December 31, 2019		December 31, 2018			Location	December 31, 2019			December 31, 2018
Forward contracts	$	124	$	(215	)	Research and development	$	(8	)	$	60
						Sales and marketing	(29		)	148
	$	124	$	(215	)		$	(37	)	$	208


(a)	The amount represents the change in fair value of derivative contracts due to changes in spot rates.


(b)	The amount represents reclassification from other comprehensive income to earnings that occurs when the hedged item affects earnings.

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The following table provides the effect foreign exchange forward contracts had on other comprehensive income (loss) (OCI) and results of operations for the nine months ended December 31, 2019 and 2018 (in thousands):



	(Gain) Loss Recognized in OCI on Derivative (a)					Gain (Loss) Reclassified from Accumulated OCI into Income (b)
	December 31, 2019		December 31, 2018			Location	December 31, 2019			December 31, 2018
Forward contracts	$	24	$	(794	)	Research and development	$	(16	)	$	147
						Sales and marketing	49			357
	$	24	$	(794	)		$	33		$	504


(a)	The amount represents the change in fair value of derivative contracts due to changes in spot rates.


(b)	The amount represents reclassification from other comprehensive income to earnings that occurs when the hedged item affects earnings.

NOTE 11 – LONG-TERM DEBT

On January 16, 2018, the Company amended and expanded its existing credit agreement (Amended Credit Agreement) with a syndicate of lenders by and among: the Company; JPMorgan Chase Bank, N.A. (JPMorgan), as administrative agent and collateral agent; J.P. Morgan Securities LLC, KeyBanc Capital Markets, Merrill Lynch, Pierce, Fenner & Smith Incorporated, RBC Capital Markets and Wells Fargo Securities, LLC, as joint lead arrangers and joint bookrunners; Fifth Third Bank, Santander Bank, N.A., SunTrust Bank, N.A. and U.S. Bank National Association, as co-documentation agents; and the lenders party thereto.

The Amended Credit Agreement provides for a five-year, $1.0 billion senior secured revolving credit facility, including a letter of credit sub-facility of up to $75.0 million. The Company may elect to use the new credit facility for general corporate purposes or to finance the repurchase of up to twenty-five million shares of the Company's common stock under the Company's common stock repurchase plan. The commitments under the Amended Credit Agreement will expire on January 16, 2023, and any outstanding loans will be due on that date. During the nine months ended December 31, 2019, the Company repaid $100.0 million of borrowings under the Amended Credit Agreement. At December 31, 2019, $450 million was outstanding under the Amended Credit Agreement.

At the Company's election, revolving loans under the Amended Credit Agreement bear interest at either (a) an Alternate Base Rate per annum equal to the greatest of (1) JPMorgan's prime rate, (2) 0.50% in excess of the New York Federal Reserve Bank (NYFRB) rate, or (3) an adjusted one month LIBOR rate plus 1%; or (b) such adjusted LIBOR rate (for the interest period selected by the Company), in each case plus an applicable margin. For the period from the delivery of the Company's financial statements for the quarter ended September 30, 2019, until the Company has delivered financial statements for the quarter ended December 31, 2019, the applicable margin will be 1.50% per annum for LIBOR loans and 0.50% per annum for Alternate Base Rate loans, and thereafter the applicable margin will vary depending on the Company's leverage ratio, ranging from 1.00% per annum for Base Rate loans and 2.00% per annum for LIBOR loans if the Company's consolidated leverage ratio is greater than 3.50 to 1.00, down to 0.00% per annum for Alternate Base Rate loans and 1.00% per annum for LIBOR loans if the Company's consolidated leverage ratio is equal to or less than 1.50 to 1.00.

On July 27, 2017, the U.K. Financial Conduct Authority (FCA) announced that it will no longer require banks to submit rates for the calculation of LIBOR after 2021. The Company's Amended Credit Agreement provides for the Administrative Agent to determine if (i) adequate and reasonable means do not exist for ascertaining the LIBOR rate or (ii) the FCA or Government Authority having jurisdiction over the Administrative Agent has made a public statement identifying a specific date after which the LIBOR rate shall no longer be used for determining interest rates for loans and the Administrative Agent determines that (i) and (ii) above are unlikely to be temporary then the Administrative Agent and the Company would agree to transition to an Alternate Base Rate Borrowing or amend the Credit Agreement to establish an alternate rate of interest to LIBOR that gives due consideration to the then prevailing market convention for determining a rate of interest for syndicated loans in the United States at such time.

The Company's consolidated leverage ratio is the ratio of its total funded debt compared to its consolidated adjusted EBITDA. Consolidated adjusted EBITDA includes certain adjustments, including, without limitation, adjustments relating to extraordinary, unusual or non-recurring charges, certain restructuring charges, non-cash charges, certain transaction costs and expenses and certain pro forma adjustments in connection with material acquisitions and dispositions, all as set forth in detail in the definition of consolidated adjusted EBITDA in the Amended Credit Agreement.

Commitment fees will accrue on the daily unused amount of the credit facility. For the period from the delivery of the Company's financial statements for the quarter ended September 30, 2019 until the Company has delivered financial statements

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for the quarter ended December 31, 2019, the commitment fee will be 0.25% per annum, and thereafter the commitment fee will vary depending on the Company's consolidated leverage ratio, ranging from 0.30% per annum if the Company's consolidated leverage ratio is greater than 2.75 to 1.00, down to 0.15% per annum if the Company's consolidated leverage ratio is equal to or less than 1.50 to 1.00.

Letter of credit participation fees are payable to each lender on the amount of such lender’s letter of credit exposure, during the period from the closing date of the Amended Credit Agreement to but excluding the date which is the later of (i) the date on which such lender’s commitment terminates or (ii) the date on which such lender ceases to have any letter of credit exposure, at a rate per annum equal to the applicable margin for LIBOR loans. Additionally, the Company will pay a fronting fee to each issuing bank in amounts to be agreed to between the Company and the applicable issuing bank.

Interest on Alternate Base Rate loans is payable at the end of each calendar quarter. Interest on LIBOR loans is payable at the end of each interest rate period or at the end of each three-month interval within an interest rate period if the period is longer than three months. The Company may also prepay loans under the Amended Credit Agreement at any time, without penalty, subject to certain notice requirements.

Debt is recorded at the amount drawn on the revolving credit facility plus interest based on floating rates reflective of changes in the market which approximates fair value.

The loans and other obligations under the credit facility are (a) guaranteed by each of the Company's wholly owned material domestic restricted subsidiaries, subject to certain exceptions, and (b) are secured by substantially all of the assets of the Company and the subsidiary guarantors, including a pledge of all the capital stock of material subsidiaries held directly by the Company and the subsidiary guarantors (which pledge, in the case of any foreign subsidiary, is limited to 65% of the voting stock), subject to certain customary exceptions and limitations. The Amended Credit Agreement generally prohibits any other liens on the assets of the Company and its restricted subsidiaries, subject to certain exceptions as described in the Amended Credit Agreement.

The Amended Credit Agreement contains certain covenants applicable to the Company and its restricted subsidiaries, including, without limitation, limitations on additional indebtedness, liens, various fundamental changes, dividends and distributions, investments (including acquisitions), transactions with affiliates, asset sales, including sale-leaseback transactions, speculative hedge agreements, payment of junior financing, changes in business and other limitations customary in senior secured credit facilities. In addition, the Company is required to maintain certain consolidated leverage and interest coverage ratios. These covenants and limitations are more fully described in the Amended Credit Agreement. At December 31, 2019, the Company was in compliance with all of these covenants.

The Amended Credit Agreement provides that events of default will exist in certain circumstances, including failure to make payment of principal or interest on the loans when required, failure to perform certain obligations under the Amended Credit Agreement and related documents, defaults under certain other indebtedness, certain insolvency events, certain events arising under ERISA, a change of control and certain other events. Upon an event of default, the administrative agent with the consent of, or at the request of, the holders of more than 50% in principal amount of the loans and commitments may terminate the commitments and accelerate the maturity of the loans and enforce certain other remedies under the Amended Credit Agreement and the other loan documents.

In connection with the Company's Amended Credit Agreement described above, the Company terminated its previous term loan dated as of July 14, 2015, by and among the Company; JPMorgan Chase Bank, N.A. (JPMorgan), as administrative agent and collateral agent; J.P. Morgan Securities LLC, KeyBanc Capital Markets, Merrill Lynch, Pierce, Fenner & Smith Incorporated, RBC Capital Markets and Wells Fargo Securities, LLC, as joint lead arrangers and joint bookrunners; Santander Bank, N.A., SunTrust Bank, N.A. and U.S. Bank National Association, as co-documentation agents; and the lenders party thereto.

The Company has capitalized debt issuance costs totaling $12.2 million at December 31, 2019, which are being amortized over the life of the revolving credit facility. The unamortized balance was $5.3 million as of December 31, 2019. The balance of $1.7 million was included as prepaid expenses and other current assets and a balance of $3.6 million was included as other assets in the Company's consolidated balance sheet.

NOTE 12 – RESTRUCTURING CHARGES

During the third quarter of the fiscal year ended March 31, 2018, the Company restructured certain departments to better align functions. As a result of the workforce reduction, during the twelve months ended March 31, 2018, the Company recorded a restructuring charge totaling $5.1 million related to one-time termination benefits for the employees that were notified during the period. During the nine months ended December 31, 2018, the Company recorded an additional charge of $1.7 million for one-time termination benefits and facilities-related costs. The one-time termination benefits were paid in full during the fiscal year ended March 31, 2019.

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During the second quarter of the fiscal year ended March 31, 2019, the Company implemented a voluntary separation program (VSP) for employees who met certain age and service requirements to reduce overall headcount resulting in a total restructuring charge for the program of $17.3 million. As a result of the related workforce reduction, during the nine months ended December 31, 2019 and 2018, the Company recorded restructuring charges totaling $0.1 million and $16.1 million, respectively, related to one-time termination benefits employees who voluntarily terminated their employment with the Company during the period. The one-time termination benefits were paid in full by the end of the first quarter of the fiscal year ending March 31, 2020.

During the second quarter of the fiscal year ending March 31, 2020, the Company restructured certain departments to better align functions. As a result of the workforce reduction, during the nine months ended December 31, 2019, the Company recorded a restructuring charge totaling $0.3 million related to one-time termination benefits for the employees that were notified during the period. Additional one-time termination benefit charges of approximately $0.1 million in the aggregate are anticipated to be recorded in the next three months. The one-time termination benefits are expected to be paid in full by the first quarter of the fiscal year ending March 31, 2021.

The following table provides a summary of the activity related to the restructuring plan and the related restructuring liability (in thousands):



	Q2FY20 Plan			VSP
	Employee-Related			Employee-Related			Total
Balance at March 31, 2019	$	—		$	—		$	—
Restructuring charges to operations	329			123			452
Cash payments	(169		)	(123		)	(292		)
Other adjustments	14			—			14
Balance at December 31, 2019	$	174		$	—		$	174

NOTE 13 - LEASES

In February 2016, the FASB issued ASC 842 to increase transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. The Company adopted the guidance on April 1, 2019 using the modified retrospective method and as a result did not adjust comparative periods or modify disclosures in those comparative periods.

The new guidance provides a number of optional practical expedients in transition. The Company elected the package of practical expedients, which does not require the reassessment of prior conclusions about lease identification, lease classification and initial direct costs. Further, the Company elected the practical expedients to combine lease and non-lease components, and to not recognize right-of-use (ROU) assets and lease liabilities for short-term leases. Leases with an initial term of 12 months or less are classified as short-term leases. The Company did not elect the hindsight practical expedient to determine the lease term for existing leases.

The adoption of ASC 842 on April 1, 2019 resulted in the recognition of operating lease ROU assets of approximately $68.2 million, operating lease liabilities of approximately $83.2 million and the elimination of deferred rent of approximately $15.0 million. Operating leases are included in operating lease ROU assets and lease liabilities on the Company’s balance sheets. The adoption of ASC 842 did not have a material impact on the Company’s consolidated statement of operations, consolidated statement of stockholders' equity, consolidated statement of comprehensive income (loss) or consolidated statement of cash flows. The new standard had no material impact on liquidity and had no impact on the Company’s debt-covenant compliance under its current debt agreements.

The Company determines if an arrangement is a lease at inception. ROU assets represent the Company’s right to use an underlying asset for the duration of the lease term. Lease liabilities represent the Company’s contractual obligation to make lease payments over the lease term. ROU assets are recorded and recognized at commencement for the lease liability amount, plus initial direct costs incurred less lease incentives received. Lease liabilities are recorded at the present value of future lease payments over the lease term at commencement. The discount rate used is generally the Company’s estimated incremental borrowing rate unless the lessor’s implicit rate is readily determinable. Incremental borrowing rates are calculated periodically to estimate the rate the Company would pay to borrow the funds necessary to obtain an asset of similar value over a similar term. Lease expenses relating to operating leases are recognized on a straight-line basis over the lease term.

The Company has operating leases for administrative, research and development, sales and marketing and manufacturing facilities and equipment under various non-cancelable lease agreements. The Company’s leases have remaining lease terms ranging from 1 year to 11 years. The Company’s lease terms may include options to extend or terminate the lease where it is

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reasonably certain that the Company will exercise those options. The Company considers several economic factors when making this determination, including but not limited to, the significance of leasehold improvements incurred in the office space, the difficulty in replacing the asset, underlying contractual obligations, or specific characteristics unique to a particular lease. The Company’s lease agreements do not contain any material residual value guarantees or material restrictive covenants.

Most of the Company’s lease agreements contain variable payments, primarily for common area maintenance (CAM), which are expensed as incurred and not included in the measurement of the ROU assets and lease liabilities.

The components of operating lease cost for the three and nine months ended December 31, 2019 were as follows (in thousands):



	Three Months Ended		Nine Months Ended
	December 31, 2019		December 31, 2019
Lease cost under long-term operating leases	$	3,459	$	9,980
Lease cost under short-term operating leases	1,681		3,430
Variable lease cost under short-term and long-term operating leases	974		3,249
Total operating lease cost	$	6,114	$	16,659

The table below presents supplemental cash flow information related to leases during the nine months ended December 31, 2019 (in thousands):



Cash paid for amounts included in the measurement of lease liabilities	$	9,690

Right-of-use assets obtained in exchange for new operating lease liabilities	$	5,474

Weighted average remaining lease term in years and weighted average discount rate are as follows:



Weighted average remaining lease term in years - operating leases	8.80

Weighted average discount rate - operating leases	4.2	%

Future minimum payments under non-cancellable leases at December 31, 2019 are as follows (in thousands):



Year ending March 31:
2020 (remaining three months)	$	2,990
2021	13,523
2022	12,668
2023	10,475
2024	9,044
Thereafter	45,475
Total lease payments	$	94,175
Less imputed interest	(15,270		)
Present value of lease liabilities	$	78,905

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As previously disclosed in the Company’s fiscal year Form 10-K and under the previous lease accounting standard, ASC 840, Leases, the following table summarizes the future non-cancelable minimum lease commitments (including office space, copiers, and automobiles) at March 31, 2019 (in thousands):



Year ending March 31:
2020	$	16,102
2021	11,059
2022	9,804
2023	8,807
2024	8,500
Thereafter	43,997
Total	$	98,269

NOTE 14 – COMMITMENTS AND CONTINGENCIES

Acquisition and divestiture related – The Company has a contingent consideration asset related to the divestiture of its HNT tools business in September 2018. The contingent consideration asset represents potential future earnout payments to the Company of up to $4.0 million over two years that are contingent on the HNT tools business achieving certain milestones. The fair value of the contingent consideration asset at December 31, 2019 and March 31, 2019 was $0.2 million and $0.8 million, respectively.

The Company had a contingent liability at December 31, 2019 for $1.0 million related to the acquisition of Eastwind in April 2019 for which an escrow account was established to cover damages NetScout may suffer related to any liabilities that NetScout did not agree to assume or as a result of the breach of representations and warranties of the seller as described in the merger agreement. Except to the extent that valid indemnification claims are made prior to such time, the $1.0 million will be paid to the seller in April 2020.

Legal – From time to time, NetScout is subject to legal proceedings and claims in the ordinary course of business. In the opinion of management, the amount of ultimate expense with respect to any current legal proceedings and claims, if determined adversely, will not have a material adverse effect on the Company’s financial condition, results of operations or cash flows.

As previously disclosed, in March 2016, Packet Intelligence LLC (Packet Intelligence or Plaintiff) filed a Complaint against NetScout and two subsidiary entities in the United States District Court for the Eastern District of Texas asserting infringement of five United States patents. Plaintiff’s Complaint alleged that legacy Tektronix GeoProbe products, including the G10 and GeoBlade products, infringed these patents. NetScout filed an Answer denying Plaintiff’s allegations and asserting that Plaintiff’s patents were, among other things, invalid, not infringed, and unenforceable due to inequitable conduct. In October 2017, a jury trial was held to address the parties’ claims and counterclaims regarding infringement of three patents by the G10 and GeoBlade products, invalidity of these patents, and damages. On October 13, 2017, the jury rendered a verdict finding in favor of the Plaintiff and that Plaintiff was entitled to $3,500,000 for pre-suit damages and $2,250,000 for post-suit damages. The jury indicated that the awarded damages amounts were intended to reflect a running royalty. In September 2018, the Court entered judgment and "enhanced" the jury verdict in the amount of $2.8 million as a result of a jury finding. The judgment also awards pre- and post-judgment interest, and a running royalty on the G10 and GeoBlade products until the expiration of the patents at issue, the last date being June 2022. The Court denied the Plaintiff's motion for fees. Following additional motions for judgment as a matter of law, the court entered final judgment. On June 12, 2019, NetScout filed its Notice of Appeal of the judgment and all other adverse findings. NetScout has concluded that the risk of loss from this matter is currently neither remote nor probable, and therefore, under GAAP definitions, the risk of loss is termed "reasonably possible." Therefore, accounting rules require NetScout to provide an estimate for the range of potential liability. NetScout currently estimates that the estimated range of liability is between $0 and the aggregate amount awarded by the jury and the Court's award of enhanced damages, plus potential additional pre- and post-judgment interest amounts and costs and any royalties owed on post-trial sales of the accused G10 and GeoBlade products.

NOTE 15 – PENSION BENEFIT PLANS

Certain of the Company's non-U.S. employees participate in noncontributory defined benefit pension plans. None of the Company's employees in the U.S. participate in any noncontributory defined benefit pension plans. In general, these plans are funded based on considerations relating to legal requirements, underlying asset returns, the plan's funded status, the anticipated deductibility of the contribution, local practices, market conditions, interest rates and other factors.

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The following sets forth the components of the Company's net periodic pension cost of the noncontributory defined benefit pension plans for the three and nine months ended December 31, 2019 and 2018 (in thousands):



	Three Months Ended				Nine Months Ended
	December 31,				December 31,
	2019		2018		2019		2018
Service cost	$	45	$	61	$	131	$	187
Interest cost	105		118		307		362
Net periodic pension cost	$	150	$	179	$	438	$	549

Expected Contributions

During the nine months ended December 31, 2019, the Company made contributions of $0.3 million to its defined benefit pension plans. During the fiscal year ending March 31, 2020, the Company's cash contribution requirements for its defined benefit pension plans are expected to be less than $1.0 million. As a majority of the participants within the Company's plans are all active employees, the benefit payments are not expected to be material in the foreseeable future.

NOTE 16 – TREASURY STOCK

On May 19, 2015, the Company's board of directors approved a share repurchase program. This program enabled the Company to repurchase up to 20 million shares of its common stock. This plan became effective on July 14, 2015. The Company was not obligated to acquire any specific amount of common stock within any particular timeframe under this program. Through March 31, 2018, the Company had repurchased 20,000,000 shares totaling $607.6 million in the open market under this stock repurchase plan. At March 31, 2018, there were no shares of common stock that remained available to be purchased under the plan.

On October 24, 2017, the Company’s Board of Directors approved a new share repurchase program that enables the Company to repurchase up to twenty-five million shares of its common stock. This new program became effective when the Company’s previously disclosed twenty million share repurchase program was completed. The Company is not obligated to acquire any specific amount of common stock within any particular timeframe as a result of this new share repurchase program.

On February 1, 2018, the Company entered into accelerated share repurchase (ASR) agreements with two third-party financial institutions (the Dealers) to repurchase an aggregate of $300 million of the Company's common stock via accelerated stock repurchase transactions under the Company’s twenty million share repurchase program (until such program was completed) and the twenty-five million share repurchase program. The Company borrowed $300 million against its Amended Credit Facility to finance the payment of the initial purchase price to each of the Dealers. Under the terms of the ASR, the Company made a $150 million payment to each of the Dealers on February 2, 2018 and received an initial delivery of 3,693,931 shares from each of the Dealers, or 7,387,862 shares in the aggregate, which was approximately 70 percent of the total number of shares of the Company's common stock expected to be repurchased under the ASR. As part of this purchase, 970,650 shares for $27.6 million were deducted under the twenty million share repurchase program and 6,417,212 shares for $182.4 million were deducted from the twenty-five million share repurchase program during the fiscal year ended March 31, 2018. Final settlement of the ASR agreements was completed in August 2018. As a result, the Company received an additional 3,679,947 shares of its common stock for $96.8 million, which reduced the number of shares available to be purchased from the twenty-five million share repurchase program during the nine months ended December 31, 2018. In total, 11,067,809 shares of the Company's common stock were repurchased under the ASR at an average cost per share of $27.11.

Through December 31, 2019, the Company has repurchased 15,805,003 shares for $418.7 million in the open market under the twenty-five million share repurchase program. At December 31, 2019, 9,194,997 shares of common stock remained available to be purchased under the current repurchase program. The Company repurchased 5,164,593 shares for $125.0 million during the nine months ended December 31, 2019 under the twenty-five million share repurchase program.

In connection with the delivery of shares of the Company's common stock upon vesting of restricted stock units, the Company withheld 509,532 shares and 430,406 shares at a cost of $11.6 million and $11.4 million related to minimum statutory tax withholding requirements on these restricted stock units during the nine months ended December 31, 2019 and 2018, respectively. These withholding transactions do not fall under the repurchase program described above, and therefore do not reduce the number of shares that are available for repurchase under that program.

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NOTE 17 – NET INCOME (LOSS) PER SHARE

Calculations of the basic and diluted net income (loss) per share and potential common shares are as follows (in thousands, except for per share data):



	Three Months Ended					Nine Months Ended
	December 31,					December 31,
	2019		2018			2019			2018
Numerator:
Net income (loss)	$	36,725	$	(3,603	)	$	(10,090	)	$	(92,535	)
Denominator:
Denominator for basic net income (loss) per share - weighted average common shares outstanding	74,367		77,774			75,780			78,916
Dilutive common equivalent shares:
Weighted average restricted stock units	333		—			—			—
Denominator for diluted net income (loss) per share - weighted average shares outstanding	74,700		77,774			75,780			78,916
Net (income) loss per share:
Basic net income (loss) per share	$	0.49	$	(0.05	)	$	(0.13	)	$	(1.17	)
Diluted net income (loss) per share	$	0.49	$	(0.05	)	$	(0.13	)	$	(1.17	)

The following table sets forth restricted stock units excluded from the calculation of diluted net income (loss) per share, since their inclusion would be anti-dilutive (in thousands):



	Three Months Ended		Nine Months Ended
	December 31,		December 31,
	2019	2018	2019	2018
Restricted stock units	2,997	435	694	733

Basic net income (loss) per share is calculated by dividing net income (loss) by the weighted average number of shares outstanding during the period. Unvested restricted shares, although legally issued and outstanding, are not considered outstanding for purposes of calculating basic earnings per share. Diluted net income (loss) per share is calculated by dividing net income (loss) by the weighted average number of shares outstanding plus the dilutive effect, if any, of outstanding stock options, restricted shares and restricted stock units using the treasury stock method. The calculation of the dilutive effect of outstanding equity awards under the treasury stock method includes consideration of proceeds from the assumed exercise of stock options and unrecognized compensation expense as additional proceeds. As we incurred a net loss during the three months ended December 31, 2018 and the nine months ended December 31, 2019 and 2018, all outstanding restricted stock units have an anti-dilutive effect and are therefore excluded from the computation of diluted weighted average shares outstanding.

NOTE 18 – INCOME TAXES

Generally, the Company's effective tax rate differs from the statutory tax rate due to state income taxes and US taxation on foreign earnings, which are partially offset by research and development tax credits and the Foreign Derived Intangible Income deduction.

The Company's effective income tax rates were 11.6% and 30.8% for the three months ended December 31, 2019 and 2018, respectively. The effective tax rate for the three months ended December 31, 2019 was lower than the effective rate for the three months ended December 31, 2018, primarily due to a discrete benefit related to the issuance of US regulations in the quarter impacting the Company's estimate of the Base Erosion Anti-Abuse Tax (BEAT).

The Company's effective income tax rates were 47.2% and 20.2% for the nine months ended December 31, 2019 and 2018, respectively. The effective tax rate for the nine months ended December 31, 2019 was higher than the effective rate for the nine months ended December 31, 2018, primarily due to the establishment of U.S. deferred tax liabilities for certain of the Company's foreign subsidiaries making elections in the first quarter to be treated as U.S. branches for federal income tax purposes, stock-based compensation, and a significant reduction in pre-tax losses as compared to the prior year. These items were partially offset by a discrete benefit related to the issuance of US regulations in the quarter impacting the Company's estimate of BEAT.

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NOTE 19 – SEGMENT AND GEOGRAPHIC INFORMATION

The Company reports revenues and income under one reportable segment.

The Company manages its business in the following geographic areas: United States, Europe, Asia and the rest of the world. In accordance with United States export control regulations, the Company does not sell or do business with countries subject to economic sanctions or export controls.

Total revenue by geography is as follows (in thousands):



	Three Months Ended				Nine Months Ended
	December 31,				December 31,
	2019		2018		2019		2018
United States	$	163,605	$	148,379	$	410,252	$	412,377
Europe	45,049		45,058		110,259		109,529
Asia	15,957		18,187		41,647		54,285
Rest of the world	35,413		34,384		100,311		98,725
	$	260,024	$	246,008	$	662,469	$	674,916

The United States revenue includes sales to resellers in the United States. These resellers fulfill customer orders and may subsequently ship the Company’s products to international locations. Further, the Company determines the geography of its sales after considering where the contract originated. A majority of revenue attributable to locations outside of the United States is a result of export sales. Substantially all of the Company's identifiable assets are located in the United States.

NOTE 20 – SUBSEQUENT EVENTS

On February 5, 2020, the Company acquired 100% of the common stock of Gigavation Incorporated, a cybersecurity company for $8.0 million.

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

You should read the following discussion and analysis of our financial condition and results of operations in conjunction with the condensed consolidated financial statements and notes thereto included elsewhere in this Quarterly Report and in our Annual Report on Form 10-K for the fiscal year ended March 31, 2019, filed with the Securities and Exchange Commission. This discussion contains forward-looking statements that involve risks and uncertainties. When reviewing the discussion below, you should keep in mind the substantial risks and uncertainties that could impact our business. In particular, we encourage you to review the risks and uncertainties described in Part I, Item 1A "Risk Factors" in our Annual Report on Form 10-K for the fiscal year ended March 31, 2019. These risks and uncertainties could cause actual results to differ significantly from those projected in forward-looking statements contained in this report or implied by past results and trends. Forward-looking statements are statements that attempt to forecast or anticipate future developments in our business, financial condition or results of operations. See the section titled "Cautionary Statement Concerning Forward-Looking Statements" that appears at the beginning of this Quarterly Report. These statements, like all statements in this report, speak only as of the date of this Quarterly Report (unless another date is indicated), and, except as required by law, we undertake no obligation to update or revise these statements in light of future developments.

Overview

We are an industry leader in providing service assurance and security solutions that are used by customers worldwide to assure their digital business services against disruption. Service providers and enterprises, including local, state and federal government agencies, rely on our solutions to achieve the visibility necessary to optimize network performance, ensure the delivery of high-quality, mission-critical applications and services, gain timely insight into the end user experience and protect the network from attack. With our offerings, customers can quickly, efficiently and effectively identify and resolve issues that result in downtime, interruptions to services, poor service quality or compromised security, thereby driving compelling returns on their investments in their network and broader technology initiatives.

Our operating results are influenced by a number of factors, including, but not limited to, the mix and quantity of products and services sold, pricing, costs of materials used in our products, growth in employee-related costs, including commissions, and the expansion of our operations. Factors that affect our ability to maximize our operating results include, but are not limited to, our ability to introduce and enhance existing products, the marketplace acceptance of those new or enhanced products, continued expansion into international markets, development of strategic partnerships, competition, successful acquisition integration efforts, and our ability to achieve expense reductions and make improvements in a highly competitive industry.

Results Overview

Total revenue for the nine months ended December 31, 2019 was primarily impacted by the divestiture of the HNT tools business assets as that sale occurred in mid-September 2018.

Our gross profit percentage increased by two percentage points during the nine months ended December 31, 2019 as compared with the nine months ended December 31, 2018.

Net loss for the nine months ended December 31, 2019 was $10.1 million, as compared with a net loss for the nine months ended December 31, 2018 of $92.5 million, a decrease of $82.4 million, primarily due to a $35.9 million impairment charge of certain intangible assets related to the HNT tools business recorded in the nine months ended December 31, 2018, , a $25.4 million decrease in employee-related expenses, a $17.0 million decrease in restructuring charges, and a $9.2 million loss on the divestiture of the HNT tools business recorded in the nine months ended December 31, 2018. These decreases were partially offset by a $26.7 million increase in income tax expense.

At December 31, 2019, we had cash, cash equivalents and marketable securities (short-term and long-term) of $346.5 million. This represents a decrease of $140.5 million from $487.0 million at March 31, 2019. This decrease was primarily due to $125.0 million used to repurchase shares of our common stock, $100.0 million used to repay long-term debt, $15.2 million used for capital expenditures, $11.6 million used for tax withholdings on restricted stock units, and $4.2 million used for the acquisition of Eastwind partially offset by cash provided by operations of $117.8 million during the nine months ended December 31, 2019.

Use of Non-GAAP Financial Measures

We supplement the United States generally accepted accounting principles (GAAP) financial measures we report in

quarterly and annual earnings announcements, investor presentations and other investor communications by reporting the following non-GAAP measures: non-GAAP total revenue, non-GAAP product revenue, non-GAAP service revenue, non-GAAP gross profit, non-GAAP income from operations, non-GAAP operating margin, non-GAAP earnings before interest and other expense, income taxes, depreciation and amortization (EBITDA) from operations, non-GAAP net income, and non-GAAP net income per share (diluted). Non-GAAP revenue (total, product and service) eliminates the GAAP effects of

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acquisitions by adding back revenue related to deferred revenue revaluation. Non-GAAP gross profit includes the aforementioned revenue adjustments and also removes expenses related to the amortization of acquired intangible assets, share-based compensation, certain expenses relating to acquisitions including depreciation costs, and adds back transitional service agreement income. Non-GAAP income from operations includes the aforementioned adjustments and also removes business development and integration costs, compensation for post-combination services, restructuring charges, intangible asset impairment charges, loss on divestiture and costs related to new accounting standard implementation. Non-GAAP EBITDA from operations includes the aforementioned items related to non-GAAP income from operations and also removes non-acquisition-related depreciation expense. Non-GAAP net income includes the foregoing adjustments related to non-GAAP income from operations, net of related income tax effects, and changes in contingent consideration. Non-GAAP diluted net income per share also excludes these expenses as well as the related impact of all these adjustments on the provision for income taxes.

These non-GAAP measures are not in accordance with GAAP, should not be considered an alternative for measures prepared in accordance with GAAP (revenue, gross profit, operating profit, net income (loss) and diluted net income (loss) per share), and may have limitations in that they do not reflect all our results of operations as determined in accordance with GAAP. These non-GAAP measures should only be used to evaluate our results of operations in conjunction with the corresponding GAAP measures. The presentation of non-GAAP information is not meant to be considered superior to, in isolation from, or as a substitute for results prepared in accordance with GAAP.

Management believes these non-GAAP financial measures enhance the reader's overall understanding of our current financial performance and our prospects for the future by providing a higher degree of transparency for certain financial measures and providing a level of disclosure that helps investors understand how we plan and measure our business. We believe that providing these non-GAAP measures affords investors a view of our operating results that may be more easily compared with our peer companies and also enables investors to consider our operating results on both a GAAP and non-GAAP basis during and following the integration period of our acquisitions. Presenting the GAAP measures on their own may not be indicative of our core operating results. Furthermore, management believes that the presentation of non-GAAP measures when shown in conjunction with the corresponding GAAP measures provide useful information to management and investors regarding present and future business trends relating to our financial condition and results of operations.

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The following table reconciles revenue, gross profit, income (loss) from operations, net income (loss) and net income (loss) per share on a GAAP and non-GAAP basis for the three and nine months ended December 31, 2019 and 2018 (in thousands, except for per share amounts):



	Three Months Ended						Nine Months Ended
	December 31,						December 31,
	2019			2018			2019		2018
GAAP revenue	$	260,024		$	246,008		$	662,469	$	674,916
Product deferred revenue fair value adjustment	—			—			—		391
Service deferred revenue fair value adjustment	48			243			144		957
Non-GAAP revenue	$	260,072		$	246,251		$	662,613	$	676,264

GAAP gross profit	$	194,439		$	176,424		$	483,009	$	479,325
Product deferred revenue fair value adjustment	—			—			—		391
Service deferred revenue fair value adjustment	48			243			144		957
Share-based compensation expense	1,506			1,894			5,427		5,882
Amortization of acquired intangible assets	6,222			7,554			18,677		23,687
Acquisition related depreciation expense	7			13			26		63
Transitional service agreement income	—			—			—		2
Non-GAAP gross profit	$	202,222		$	186,128		$	507,283	$	510,307

GAAP income (loss) from operations	$	36,819		$	(641	)	$	5,076	$	(100,811	)
Product deferred revenue fair value adjustment	—			—			—		391
Service deferred revenue fair value adjustment	48			243			144		957
Share-based compensation expense	11,361			13,759			39,961		44,142
Amortization of acquired intangible assets	22,342			23,987			67,072		81,566
Business development and integration expense	20			1			38		386
New standard implementation expense	1			72			10		888
Compensation for post-combination services	125			99			453		717
Restructuring charges	193			13,895			466		17,514
Impairment of intangible assets	—			—			—		35,871
Acquisition related depreciation expense	61			122			251		784
Loss on divestiture	—			—			—		9,177
Transitional service agreement income (expense)	(25		)	1,055			1,159		1,274
Non-GAAP income from operations	$	70,945		$	52,592		$	114,630	$	92,856

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	Three Months Ended						Nine Months Ended
	December 31,						December 31,
	2019			2018			2019			2018
GAAP net income (loss)	$	36,725		$	(3,603	)	$	(10,090	)	$	(92,535	)
Product deferred revenue fair value adjustment	—			—			—			391
Service deferred revenue fair value adjustment	48			243			144			957
Share-based compensation expense	11,361			13,759			39,961			44,142
Amortization of acquired intangible assets	22,342			23,987			67,072			81,566
Business development and integration expense	20			1			38			386
New standard implementation expense	1			72			10			888
Compensation for post-combination services	125			99			453			717
Restructuring charges	193			13,895			466			17,514
Impairment of intangible assets	—			—			—			35,871
Acquisition-related depreciation expense	61			122			251			784
Loss on divestiture	—			—			—			9,177
Transitional service agreement expense	—			(45		)	—			(45		)
Change in contingent consideration	—			—			517			—
Income tax adjustments	(16,182		)	(13,334		)	(17,176		)	(42,563		)
Non-GAAP net income	$	54,694		$	35,196		$	81,646		$	57,250

GAAP diluted net income (loss) per share	$	0.49		$	(0.05	)	$	(0.13	)	$	(1.17	)
Per share impact of non-GAAP adjustments identified above	0.24			0.50			1.20			1.89
Non-GAAP diluted net income per share	$	0.73		$	0.45		$	1.07		$	0.72

GAAP income (loss) from operations	$	36,819		$	(641	)	$	5,076		$	(100,811	)
Previous adjustments to determine non-GAAP income from operations	34,126			53,233			109,554			193,667
Non-GAAP income from operations	70,945			52,592			114,630			92,856
Depreciation excluding acquisition related	6,339			7,842			20,085			24,159
Non-GAAP EBITDA from operations	$	77,284		$	60,434		$	134,715		$	117,015

Critical Accounting Policies

Our discussion and analysis of our financial condition and results of operations are based upon our consolidated financial statements, which have been prepared in accordance with GAAP consistently applied. The preparation of these consolidated financial statements requires us to make significant estimates and judgments that affect the amounts reported in our consolidated financial statements and the accompanying notes. These items are regularly monitored and analyzed by management for changes in facts and circumstances, and material changes in these estimates could occur in the future. Changes in estimates are recorded in the period in which they become known. We base our estimates on historical experience and various other assumptions that we believe to be reasonable under the circumstances. Actual results may differ from our estimates.

While all of our accounting policies impact the consolidated financial statements, certain policies are viewed to be critical. Critical accounting policies are those that are both most important to the portrayal of our financial condition and results of operations and that require management's most subjective or complex judgments and estimates. We consider the following accounting policies to be critical in fully understanding and evaluating our financial results:


•	marketable securities;


•	revenue recognition;


•	valuation of goodwill, intangible assets and other acquisition accounting items; and

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•	share-based compensation.

Please refer to the critical accounting policies set forth in our Annual Report on Form 10-K for the fiscal year ended March 31, 2019, filed with the Securities and Exchange Commission (SEC) on May 28, 2019, for a description of all of our critical accounting policies.

Three Months Ended December 31, 2019 and 2018

Revenue

Product revenue consists of sales of our hardware products and licensing of our software products. Service revenue consists of customer support agreements, consulting, training and stand-ready software as a service offering. During the three months ended December 31, 2019, no direct customer or indirect channel partner accounted for more than 10% of our total revenue. During the three months ended December 31, 2018, one direct customer, Verizon, accounted for more than 10% of total revenue, while no indirect channel partners accounted for more than 10% of total revenue.



	Three Months Ended								Change
	December 31,
	(Dollars in Thousands)
	2019				2018
			% of Revenue				% of Revenue		$		%
Revenue:
Product	$	143,309	55	%	$	134,135	55	%	$	9,174	7	%
Service	116,715		45		111,873		45		4,842		4	%
Total revenue	$	260,024	100	%	$	246,008	100	%	$	14,016	6	%

Product. The 7%, or $9.2 million, increase in product revenue compared with the same period last year was primarily due to an increase in revenue for network performance management offerings from enterprise and service provider customers, partially offset by a decrease in revenue from distributed denial of service (DDoS) offerings.

Service. The 4%, or $4.8 million, increase in service revenue compared to the same period last year was primarily driven by an increase in revenue from maintenance contracts due to an increase in new maintenance contracts and renewals from a growing support base.

Total revenue by geography is as follows:



	Three Months Ended								Change
	December 31,
	(Dollars in Thousands)
	2019				2018
			% of Revenue				% of Revenue		$			%
United States	$	163,605	63	%	$	148,379	60	%	$	15,226		10	%
International:
Europe	45,049		17		45,058		18		(9		)	—	%
Asia	15,957		6		18,187		8		(2,230		)	(12	)%
Rest of the world	35,413		14		34,384		14		1,029			3	%
Subtotal international	96,419		37		97,629		40		(1,210		)	(1	)%
Total revenue	$	260,024	100	%	$	246,008	100	%	$	14,016		6	%

United States revenue increased 10%, or $15.2 million, primarily due to an increase in revenue from network performance management offerings, partially offset by a decrease in revenue from DDoS offerings. The 1%, or $1.2 million, decrease in international revenue compared with the same period last year was primarily driven by lower revenue from DDoS offerings.

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Cost of Revenue and Gross Profit

Cost of product revenue consists primarily of material components, manufacturing personnel expenses, packaging materials, overhead and amortization of capitalized software, acquired developed technology and core technology. Cost of service revenue consists primarily of personnel, material, overhead and support costs.



	Three Months Ended										Change
	December 31,
	(Dollars in Thousands)
	2019					2018
				% of Revenue					% of Revenue		$			%
Cost of revenue
Product	$	34,197		13	%	$	40,517		16	%	$	(6,320	)	(16	)%
Service	31,388			12		29,067			12		2,321			8	%
Total cost of revenue	$	65,585		25	%	$	69,584		28	%	$	(3,999	)	(6	)%
Gross profit:
Product $	$	109,112		42	%	$	93,618		38	%	$	15,494		17	%
Product gross profit %	76		%			70		%
Service $	$	85,327		33	%	$	82,806		34	%	$	2,521		3	%
Service gross profit %	73		%			74		%
Total gross profit $	$	194,439				$	176,424				$	18,015		10	%
Total gross profit %	75		%			72		%

Product. The 16%, or $6.3 million, decrease in cost of product revenue was primarily due to a $3.3 million decrease in costs to deliver model calibration products, a $1.7 million decrease in the amortization of intangible assets, a $1.1 million decrease in overhead costs, and a $1.0 million decrease in employee-related expenses associated with the timing of certain projects as well as a reduction in headcount. These decreases were partially offset by a $0.6 million increase in inventory obsolescence charges. The product gross profit percentage increased by six percentage points to 76% during the three months ended December 31, 2019 as compared with the three months ended December 31, 2018. The 17%, or $15.5 million, increase in product gross profit corresponds with the 7%, or $9.2 million, increase in product revenue and the 16%, or $6.3 million, decrease in cost of product revenue. The increase in product gross profit was largely due to product mix. There was a higher percentage of software only sales during the three months ended December 31, 2019 as compared with the three months ended December 31, 2018.

Service. The 8%, or $2.3 million, increase in cost of service revenue during the three months ended December 31, 2019 when compared with the three months ended December 31, 2018 was primarily due to a $2.2 million increase in employee-related expenses associated with an increase in variable incentive compensation and the timing of certain projects, partially offset by a $1.1 million decrease in contractor fees. The service gross profit percentage decreased by one percentage point to 73% for the three months ended December 31, 2019 as compared with the three months ended December 31, 2018. The $2.5 million increase in service gross profit corresponds with the 4%, or $4.8 million, increase in service revenue, partially offset by the 8%, or $2.3 million, increase in cost of service revenue.

Gross profit. Our gross profit increased 10%, or $18.0 million, during the three months ended December 31, 2019 when compared with the three months ended December 31, 2018. This increase is attributable to the increase in revenue of 6%, or $14.0 million, and the 6%, or $4.0 million, decrease in cost of revenue. The gross profit percentage increased three percentage points to 75% for the three months ended December 31, 2019 as compared with the three months ended December 31, 2018.

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Operating Expenses



	Three Months Ended								Change
	December 31,
	(Dollars in Thousands)
	2019				2018
			% of Revenue				% of Revenue		$			%
Research and development	$	48,606	19	%	$	49,925	20	%	$	(1,319	)	(3	)%
Sales and marketing	67,653		26		74,024		30		(6,371		)	(9	)
General and administrative	25,048		10		22,788		9		2,260			10
Amortization of acquired intangible assets	16,120		6		16,433		7		(313		)	(2	)
Restructuring charges	193		—		13,895		6		(13,702		)	(99	)
Total operating expenses	$	157,620	61	%	$	177,065	72	%	$	(19,445	)	(11	)%

Research and development. Research and development expenses consist primarily of personnel expenses, fees for outside consultants, overhead and related expenses associated with the development of new products and the enhancement of existing products.

The 3%, or $1.3 million, decrease in research and development expenses was primarily due to a $0.6 million decrease in depreciation expense, and a $0.4 million decrease in employee-related expenses due to a reduction in headcount, partially offset by an increase in variable incentive compensation in the three months ended December 31, 2019 when compared with the three months ended December 31, 2018.

Sales and marketing. Sales and marketing expenses consist primarily of personnel expenses and commissions, overhead and other expenses associated with selling activities and marketing programs such as trade shows, seminars, advertising and new product launch activities.

The 9%, or $6.4 million, decrease in total sales and marketing expenses was primarily due to a $3.7 million decrease in advertising and other marketing related programs, a $2.1 million decrease in commissions expense, and a $1.2 million decrease in expenses related to trade shows and other events in the three months ended December 31, 2019 when compared with the three months ended December 31, 2018. These decreases were partially offset by a $0.8 million increase in employee-related expenses mainly due to an increase in variable incentive compensation.

General and administrative. General and administrative expenses consist primarily of personnel expenses for executive, financial, legal and human resource employees, overhead and other corporate expenditures.

The $2.3 million increase in general and administrative expenses was primarily due to a $0.9 million increase in contractor fees, a $0.6 million increase in legal expenses, and a $0.6 million increase in employee-related expenses mainly due to an increase in variable incentive compensation during the three months ended December 31, 2019. These increases were partially offset by a $0.7 million decrease in bad debt expense.

Amortization of acquired intangible assets. Amortization of acquired intangible assets consists primarily of amortization of customer relationships, definite-lived trademarks and tradenames, and leasehold interests; related to the acquisition of Danaher Corporation's Communications Business (Comms Transaction), ONPATH Technologies, Inc. (ONPATH), Simena, LLC (Simena), Psytechnics, Ltd (Psytechnics), Network General Corporation (Network General), Avvasi Inc. (Avvasi) and Efflux Systems, Inc. (Efflux).

The 2%, or $0.3 million, decrease in amortization of acquired intangible assets was largely due to a decrease in the amortization of intangible assets related to the Comms Transaction.

Restructuring. During the fiscal year ending March 31, 2020, we restructured certain departments to better align functions. As a result of the workforce reduction, during the three months ended December 31, 2019, we recorded a restructuring charge totaling $0.2 million related to one-time termination benefits for employees who were notified during the period. During the fiscal year ended March 31, 2019, we implemented a voluntary separation program for employees who met certain age and service requirements to reduce overall headcount. As a result of the related workforce reduction, during the three months ended December 31, 2018, we recorded restructuring expenses of $13.9 million for one-time termination benefits for employees who voluntarily terminated during the period.

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Interest and Other Expense, Net. Interest and other expense, net includes interest earned on our cash, cash equivalents and marketable securities, interest expense and other non-operating gains or losses.



	Three Months Ended										Change
	December 31,
	(Dollars in Thousands)
	2019					2018
				% of Revenue					% of Revenue		$		%
Interest and other expense, net	$	(3,915	)	(2	)%	$	(4,564	)	(2	)%	$	649	14	%

The 14%, or $0.6 million, decrease in interest and other expense, net was primarily due to a $2.4 million decrease in interest expense due to debt repayments on the credit facility. This decrease in expense was partially offset by a $1.2 million decrease in transitional services agreement income related to the HNT tools business divestiture and a $0.6 million decrease in interest income received on investments.

Income Taxes. Our effective income tax rates were 11.6% and 30.8% for the three months ended December 31, 2019 and 2018, respectively. The effective tax rate for the three months ended December 31, 2019 was lower than the effective rate for the three months ended December 31, 2018, primarily due to a discrete benefit related to the issuance of US regulations in the quarter impacting our estimate of the Base Erosion Anti-Abuse Tax (BEAT).



	Three Months Ended										Change
	December 31,
	(Dollars in Thousands)
	2019					2018
				% of Revenue					% of Revenue		$			%
Income tax expense (benefit)	$	(3,821	)	(1	)%	$	(1,602	)	(1	)%	$	(2,219	)	(139	)%

Nine Months Ended December 31, 2019 and 2018

Revenue

During the nine months ended December 31, 2019, and 2018, no direct customer or indirect channel partner accounted for more than 10% of our total revenue.



	Nine Months Ended								Change
	December 31,
	(Dollars in Thousands)
	2019				2018
			% of Revenue				% of Revenue		$			%
Revenue:
Product	$	321,803	49	%	$	341,815	51	%	$	(20,012	)	(6	)%
Service	340,666		51	%	333,101		49	%	7,565			2	%
Total revenue	$	662,469	100	%	$	674,916	100	%	$	(12,447	)	(2	)%

Product. The 6%, or $20.0 million, decrease in product revenue compared with the same period last year was primarily due to the divestiture of the HNT tools business in September 2018 as well as lower enterprise related product revenue for both network performance management and DDoS offerings.

Service. The 2%, or $7.6 million, increase in service revenue compared with the same period last year was primarily due to an increase in revenue from maintenance contracts due to an increase in new maintenance contracts and renewals from a growing support base.

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Total revenue by geography is as follows:



	Nine Months Ended								Change
	December 31,
	(Dollars in Thousands)
	2019				2018
			% of Revenue				% of Revenue		$			%
United States	$	410,252	62	%	$	412,377	61	%	$	(2,125	)	(1	)%
International:
Europe	110,259		17		109,529		16		730			1	%
Asia	41,647		6		54,285		8		(12,638		)	(23	)%
Rest of the world	100,311		15		98,725		15		1,586			2	%
Subtotal international	252,217		38		262,539		39		(10,322		)	(4	)%
Total revenue	$	662,469	100	%	$	674,916	100	%	$	(12,447	)	(2	)%

United States revenue decreased 1%, or $2.1 million, due to the divestiture of the HNT tools business in September 2018, and a decrease in revenue from both network performance management and DDoS offerings. International revenue decreased 4%, or $10.3 million, primarily due to lower enterprise-related product revenue for both network performance management and DDoS offerings, as well as the divestiture of the HNT tools business in September 2018.

Cost of Revenue and Gross Profit



	Nine Months Ended										Change
	December 31,
	(Dollars in Thousands)
	2019					2018
				% of Revenue					% of Revenue		$			%
Cost of revenue
Product	$	90,500		14	%	$	107,974		16	%	$	(17,474	)	(16	)%
Service	88,960			13		87,617			13		1,343			2	%
Total cost of revenue	$	179,460		27	%	$	195,591		29	%	$	(16,131	)	(8	)%
Gross profit:
Product $	$	231,303		35	%	$	233,841		35	%	$	(2,538	)	(1	)%
Product gross profit %	72		%			68		%
Service $	$	251,706		38	%	$	245,484		36	%	$	6,222		3	%
Service gross profit %	74		%			74		%
Total gross profit $	$	483,009				$	479,325				$	3,684		1	%
Total gross profit %	73		%			71		%

Product. The 16%, or $17.5 million, decrease in cost of product revenue compared to the same period last year was primarily due to a $6.1 million decrease in costs to deliver model calibration products, a $6.1 million decrease in the amortization of intangible assets, a $3.6 million decrease in direct material costs due to a decrease in product revenue, and a $3.5 million decrease in employee-related expenses largely due to a reduction in headcount. These decreases were partially offset by a $1.3 million increase in inventory obsolescence charges. The product gross profit percentage increased by four percentage points to 72% during the nine months ended December 31, 2019 when compared to the nine months ended December 31, 2018. The 1%, or $2.5 million, decrease in product gross profit corresponds with the 6%, or $20.0 million, decrease in product revenue, partially offset by the 16%, or $17.5 million, decrease in cost of product revenue.

Service. The 2%, or $1.3 million, increase in cost of service revenue compared to the same period last year was primarily due to a $2.1 million increase in employee-related expenses due to an increase in variable incentive compensation, and a $0.8 million increase in warranty expense. These increases were partially offset by a $2.0 million decrease in contractor fees. The service gross profit percentage remained flat at 74% for the nine months ended December 31, 2019 when compared to the nine

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months ended December 31, 2018. The 3%, or $6.2 million, increase in service gross profit corresponds with the 2%, or $7.6 million, increase in service revenue, partially offset by the 2%, or $1.3 million, increase in cost of service revenue.

Gross profit. Our gross profit for the nine months ended December 31, 2019 increased 1%, or $3.7 million, compared to the same period last year. This increase is primarily attributable to the decrease in cost of revenue of 8%, or $16.1 million partially offset by a decrease in revenue of 2%, or $12.4 million. The gross profit percentage increased by two percentage points to 73% for the nine months ended December 31, 2019 when compared to the nine months ended December 31, 2018.

Operating Expenses



	Nine Months Ended								Change
	December 31,
	(Dollars in Thousands)
	2019				2018
			% of Revenue				% of Revenue		$			%
Research and development	$	142,391	21	%	$	161,347	24	%	$	(18,956	)	(12	)%
Sales and marketing	214,245		32		224,207		33		(9,962		)	(4	)
General and administrative	72,436		11		74,141		11		(1,705		)	(2	)
Amortization of acquired intangible assets	48,395		7		57,879		9		(9,484		)	(16	)
Restructuring charges	466		—		17,514		3		(17,048		)	(97	)
Impairment of intangible assets	—		—		35,871		5		(35,871		)	(100	)
Loss on divestiture of business	—		—		9,177		1		(9,177		)	(100	)
Total operating expenses	$	477,933	71	%	$	580,136	86	%	$	(102,203	)	(18	)%

Research and development. The 12%, or $19.0 million, decrease in research and development expenses for the nine months ended December 31, 2019 compared to the same period last year was primarily due to a $16.6 million decrease in employee-related expenses due to a reduction in headcount partially offset by an increase in variable incentive compensation, and a $1.8 million decrease in depreciation expense. These decreases were partially offset by a $0.8 million increase in consulting fees.

Sales and marketing. The 4%, or $10.0 million, decrease in total sales and marketing expenses for the nine months ended December 31, 2019 compared to the same period last year was primarily due to a $5.4 million decrease in employee-related expenses due to a reduction in headcount partially offset by an increase in variable incentive compensation, a $2.3 million decrease in advertising and other marketing related programs, a $1.8 million decrease in travel expense, and a $1.1 million decrease in trade shows and other events.

General and administrative. The 2%, or $1.7 million, decrease in general and administrative expenses for the nine months ended December 31, 2019 compared to the same period last year was primarily due to a $1.9 million decrease in employee-related expenses due to a reduction in salaries as a result of a decrease in headcount as well as a decrease in share-based compensation expense, a $1.0 million decrease in rent and other facilities related expenses, a $0.9 million decrease in consulting fees related to the implementation of new accounting standards, and a $0.3 million decrease in bad debt expense. These decreases were partially offset by a $1.7 million increase in legal expenses and a $0.9 million increase in contractor fees.

Amortization of acquired intangible assets. Amortization of acquired intangible assets consists primarily of amortization of customer relationships, definite-lived trademark and tradenames, and leasehold interest related to the Comms Transaction and the acquisitions of ONPATH, Simena, Psytechnics, Network General, Avvasi and Efflux.

The 16%, or $9.5 million, decrease in amortization of acquired intangible assets for the nine months ended December 31, 2019 compared to the same period last year was largely due to a decrease in amortization of the intangible assets related to the divestiture of the HNT tools business in September 2018, with the remaining decrease due to a reduction in the amortization of intangible assets related to the Comms Transaction.

Restructuring. During the fiscal year ending March 31, 2020, we restructured certain departments to better align functions. As a result of the workforce reduction, during the nine months ended December 31, 2019, we recorded a restructuring charge totaling $0.3 million related to one-time termination benefits for employees who were notified during the period. During the fiscal year ended March 31, 2019, we implemented a voluntary separation program for employees who met certain age and service requirements to reduce overall headcount. As a result of the related workforce reduction, during the nine

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months ended December 31, 2019 and 2018, we recorded restructuring expenses of $0.1 million and $17.5 million, respectively, for one-time termination benefits for employees who voluntarily terminated during the period.

Impairment of intangible assets. During the first quarter of the fiscal year ended March 31, 2019, we performed a quantitative analysis on certain intangible assets related to the HNT tools business. The fair value of these intangible assets was determined to be less than the carrying value, and as a result, we recognized an impairment charge of $35.9 million during the nine months ended December 31, 2018.

Loss on Divestiture of Business. During the nine months ended December 31, 2018, we recorded a $9.2 million loss on the divestiture of the HNT tools business.

Interest and Other Expense, Net



	Nine Months Ended										Change
	December 31,
	(Dollars in Thousands)
	2019					2018
				% of Revenue					% of Revenue		$		%
Interest and other expense, net	$	(11,930	)	(2	)%	$	(15,203	)	(2	)%	$	3,273	22	%

The 22%, or $3.3 million, decrease in interest and other expense, net was primarily due to a $3.3 million decrease in interest expense due to debt repayments on the credit facility during the nine months ended December 31, 2019.

Income Taxes. Our effective income tax rates were 47.2% and 20.2% for the nine months ended December 31, 2019 and 2018, respectively. The effective tax rate for the nine months ended December 31, 2019 was higher than the effective rate for the nine months ended December 31, 2018, primarily due to the establishment of U.S. deferred tax liabilities for certain of our foreign subsidiaries making elections in the first quarter to be treated as U.S. branches for federal income tax purposes, stock-based compensation, and a significant reduction in pre-tax losses as compared to the prior year. These items were partially offset by a discrete benefit related to the issuance of US regulations in the quarter impacting our estimate of BEAT.



	Nine Months Ended									Change
	December 31,
	(Dollars in Thousands)
	2019				2018
			% of Revenue					% of Revenue		$		%
Income tax expense (benefit)	$	3,236	—	%	$	(23,479	)	(3	)%	$	26,715	114	%

Off-Balance Sheet Arrangements

At December 31, 2019 and 2018, we did not have any off-balance sheet arrangements as defined in Regulation S-K, Item 303(a)(4)(ii).

Commitments and Contingencies

We account for claims and contingencies in accordance with authoritative guidance that requires us to record an estimated loss from a claim or loss contingency when information available prior to issuance of our consolidated financial statements indicates that it is probable that a liability has been incurred at the date of the consolidated financial statements and the amount of the loss can be reasonably estimated. If we determine that it is reasonably possible but not probable that an asset has been impaired or a liability has been incurred, or if the amount of a probable loss cannot be reasonably estimated, then in accordance with the authoritative guidance, we disclose the amount or range of estimated loss if the amount or range of estimated loss is material. Accounting for claims and contingencies requires us to use our judgment. We consult with legal counsel on those issues related to litigation and seek input from other experts and advisors with respect to matters in the ordinary course of business.

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Acquisition and divestiture related – We have a contingent consideration asset related to the divestiture of our HNT tools business in September 2018. The contingent consideration asset represents potential future earnout payments to us of up to $4.0 million over two years that are contingent on the HNT tools business achieving certain milestones. The fair value of the contingent consideration asset at December 31, 2019 was $0.2 million.

We had a contingent liability at December 31, 2019 for $1.0 million related to the acquisition of Eastwind in April 2019 for which an escrow account was established to cover damages we may suffer related to any liabilities that we did not agree to assume or as a result of the breach of representations and warranties of the seller as described in the merger agreement. Except to the extent that valid indemnification claims are made prior to such time, the $1.0 million will be paid to the seller in April 2020.

Legal – From time to time, NetScout is subject to legal proceedings and claims in the ordinary course of business. In the opinion of management, the amount of ultimate expense with respect to any current legal proceedings and claims, if determined adversely, will not have a material adverse effect on our financial condition, results of operations or cash flows.

As previously disclosed, in March 2016, Packet Intelligence LLC (Packet Intelligence or Plaintiff) filed a Complaint against NetScout and two subsidiary entities in the United States District Court for the Eastern District of Texas asserting infringement of five United States patents. Plaintiff’s Complaint alleged that legacy Tektronix GeoProbe products, including the G10 and GeoBlade products, infringed these patents. NetScout filed an Answer denying Plaintiff’s allegations and asserting that Plaintiff’s patents were, among other things, invalid, not infringed, and unenforceable due to inequitable conduct. In October 2017, a jury trial was held to address the parties’ claims and counterclaims regarding infringement of three patents by the G10 and GeoBlade products, invalidity of these patents, and damages. On October 13, 2017, the jury rendered a verdict finding in favor of the Plaintiff and that Plaintiff was entitled to $3,500,000 for pre-suit damages and $2,250,000 for post-suit damages. The jury indicated that the awarded damages amounts were intended to reflect a running royalty. In September 2018, the Court entered judgment and "enhanced" the jury verdict in the amount of $2.8 million as a result of a jury finding. The judgment also awards pre- and post-judgment interest, and a running royalty on the G10 and GeoBlade products until the expiration of the patents at issue, the last date being June 2022. The Court denied the Plaintiff's motion for fees. Following additional motions for judgment as a matter of law, the court entered final judgment. On June 12, 2019, we filed our Notice of Appeal of the judgment and all other adverse findings. We have concluded that the risk of loss from this matter is currently neither remote nor probable, and therefore, under GAAP definitions, the risk of loss is termed "reasonably possible". Therefore, accounting rules require us to provide an estimate for the range of potential liability. We currently estimate that the estimated range of liability is between $0 and the aggregate amount awarded by the jury and the Court's award of enhanced damages, plus potential additional pre- and post-judgment interest amounts and costs and any royalties owed on post-trial sales of the accused G10 and GeoBlade products.

Liquidity and Capital Resources

Cash, cash equivalents and marketable securities consisted of the following (in thousands):



	December 31, 2019		March 31, 2019
Cash and cash equivalents	$	287,660	$	409,632
Short-term marketable securities	56,274		76,344
Long-term marketable securities	2,561		1,012
Cash, cash equivalents and marketable securities	$	346,495	$	486,988

Cash, cash equivalents and marketable securities

At December 31, 2019, cash, cash equivalents and marketable securities (current and non-current) totaled $346.5 million, a $140.5 million decrease from $487.0 million at March 31, 2019, due primarily to $125.0 million used to repurchase shares of our common stock, $100.0 million used to repay long-term debt, $15.2 million used for capital expenditures, $11.6 million used for tax withholdings on restricted stock units, and $4.2 million used for the acquisition of Eastwind, partially offset by cash provided by operations of $117.8 million during the nine months ended December 31, 2019.

At December 31, 2019, cash and short-term and long-term investments in the United States were $203.3 million, while cash held outside the United States was approximately $143.2 million.

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Cash and cash equivalents were impacted by the following:



	Nine Months Ended
	December 31,
	(in thousands)
	2019			2018
Net cash provided by operating activities	$	117,790		$	69,514
Net cash used in investing activities	$	(817	)	$	(51,360	)
Net cash used in financing activities	$	(236,610	)	$	(14,264	)

Net cash from operating activities

Cash provided by operating activities was $117.8 million during the nine months ended December 31, 2019, compared with $69.5 million of cash provided by operating activities during the nine months ended December 31, 2018. This $48.3 million increase was due in part to an $82.4 million increase from a smaller net loss, a $24.4 million increase from accounts receivable, a $19.2 million increase from deferred income taxes, a $7.9 million increase from operating lease right-of-use assets, a $5.4 million increase from prepaid expenses and other assets, a $4.9 million increase from deferred revenue, and a $1.8 million increase from income taxes payable. These increases were partially offset by a $35.9 million decrease due to the impairment of intangible assets, a $19.1 million decrease from depreciation and amortization expense, a $12.4 million decrease from accrued compensation and other expenses, a $9.7 million decrease from operating lease liabilities, a $7.4 million decrease in loss on divestiture of business, a $5.2 million decrease from accounts payable, a $4.2 million decrease from share-based compensation expense, and a $3.9 million decrease from inventories during the nine months ended December 31, 2019 as compared with the nine months ended December 31, 2018.

Net cash from investing activities



	Nine Months Ended
	December 31,
	(in thousands)
	2019			2018
Cash used in investing activities included the following:
Purchase of marketable securities	$	(89,840	)	$	(184,104	)
Proceeds from sales and maturity of marketable securities	108,413			155,346
Purchase of fixed assets	(15,207		)	(19,462		)
Payments related to the divestiture of business	—			(2,911		)
Increase in deposits	(29		)	(97		)
Acquisition of businesses	(4,154		)	—
Capitalized software development costs	—			(132		)
	$	(817	)	$	(51,360	)

Cash used in investing activities decreased by $50.6 million to $0.8 million during the nine months ended December 31, 2019, compared with $51.4 million of cash used in investing activities during the nine months ended December 31, 2018.

The overall increase in cash inflow from marketable securities was primarily related to a decrease of $94.3 million in the purchase of marketable securities offset by a $46.9 million decrease in proceeds from the maturity of marketable securities during the nine months ended December 31, 2019 when compared with the nine months ended December 31, 2018.

During the nine months ended December 31, 2019, there was a $4.2 million cash outflow related to the acquisition of Eastwind.

Our investments in property and equipment consist primarily of computer equipment, demonstration units, office equipment and facility improvements. We plan to continue to invest in capital expenditures to support our infrastructure through the remainder of fiscal year 2020.

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Net cash from financing activities



	Nine Months Ended
	December 31,
	(in thousands)
	2019			2018
Cash used in financing activities included the following:
Issuance of common stock under stock plans	$	2		$	2
Payment of contingent consideration	—			(2,851		)
Repayment of long-term debt	(100,000		)	—
Treasury stock repurchases	(125,000		)	—
Tax withholding on restricted stock units	(11,612		)	(11,415		)
	$	(236,610	)	$	(14,264	)

Cash used in financing activities increased by $222.3 million to $236.6 million during the nine months ended December 31, 2019, compared with $14.3 million of cash used in financing activities during the nine months ended December 31, 2018.

During the nine months ended December 31, 2019, we repaid $100.0 million of borrowings under the Amended Credit Agreement.

During the nine months ended December 31, 2019, we repurchased 5,164,593 shares of our common stock for $125.0 million under the twenty-five million share repurchase program.

In connection with the delivery of the Company's common stock upon vesting of restricted stock units, we withheld 509,532 and 430,406 shares at a cost of $11.6 million and $11.4 million related to minimum statutory tax withholding requirements on these restricted stock units during the nine months ended December 31, 2019 and 2018, respectively. These withholding transactions do not fall under the repurchase program described above, and therefore do not reduce the number of shares that are available for repurchase under that program.

Credit Facility

On January 16, 2018, we amended and expanded our existing credit agreement (Amended Credit Agreement) with a syndicate of lenders by and among: NetScout; JPMorgan Chase Bank, N.A. (JPMorgan), as administrative agent and collateral agent; J.P. Morgan Securities LLC, KeyBanc Capital Markets, Merrill Lynch, Pierce, Fenner & Smith Incorporated, RBC Capital Markets and Wells Fargo Securities, LLC, as joint lead arrangers and joint bookrunners; Fifth Third Bank, Santander Bank, N.A., SunTrust Bank, N.A. and U.S. Bank National Association, as co-documentation agents; and the lenders party thereto.

The Amended Credit Agreement provides for a five-year, $1.0 billion senior secured revolving credit facility, including a letter of credit sub-facility of up to $75.0 million. We may elect to use the new credit facility for general corporate purposes or to finance the repurchase of up to twenty-five million shares of common stock under our common stock repurchase plan. The commitments under the Amended Credit Agreement will expire on January 16, 2023, and any outstanding loans will be due on that date. During the nine months ended December 31, 2019, we repaid $100.0 million of borrowings under the Amended Credit Agreement. At December 31, 2019, $450 million was outstanding under the Amended Credit Agreement.

At our election, revolving loans under the Amended Credit Agreement bear interest at either (a) an Alternate Base Rate per annum equal to the greatest of (1) JPMorgan's prime rate, (2) 0.50% in excess of the New York Federal Reserve Bank (NYFRB) rate, or (3) an adjusted one month LIBOR rate plus 1%; or (b) such adjusted LIBOR rate (for the interest period selected by us), in each case plus an applicable margin. For the period from the delivery of our financial statements for the quarter ended September 30, 2019, until we have delivered financial statements for the quarter ended December 31, 2019, the applicable margin will be 1.50% per annum for LIBOR loans and 0.50% per annum for Alternate Base Rate loans, and thereafter the applicable margin will vary depending on our leverage ratio, ranging from 1.00% per annum for Base Rate loans and 2.00% per annum for LIBOR loans if our consolidated leverage ratio is greater than 3.50 to 1.00, down to 0.00% per annum for Alternate Base Rate loans and 1.00% per annum for LIBOR loans if our consolidated leverage ratio is equal to or less than 1.50 to 1.00.

On July 27, 2017, the U.K. Financial Conduct Authority (FCA) announced that it will no longer require banks to submit rates for the calculation of LIBOR after 2021. Our Amended Credit Agreement provides for the Administrative Agent to determine if (i) adequate and reasonable means do not exist for ascertaining the LIBOR rate or (ii) the FCA or Government Authority having jurisdiction over the Administrative Agent has made a public statement identifying a specific date after which the LIBOR rate shall no longer be used for determining interest rates for loans and the Administrative Agent determines that (i)

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and (ii) above are unlikely to be temporary then the Administrative Agent and NetScout would agree to transition to an Alternate Base Rate Borrowing or amend the Credit Agreement to establish an alternate rate of interest to LIBOR that gives due consideration to the then prevailing market convention for determining a rate of interest for syndicated loans in the United States at such time.

Our consolidated leverage ratio is the ratio of our total funded debt compared to our consolidated adjusted EBITDA. Consolidated adjusted EBITDA includes certain adjustments, including, without limitation, adjustments relating to extraordinary, unusual or non-recurring charges, certain restructuring charges, non-cash charges, certain transaction costs and expenses and certain pro forma adjustments in connection with material acquisitions and dispositions, all as set forth in detail in the definition of consolidated adjusted EBITDA in the Amended Credit Agreement.

Commitment fees will accrue on the daily unused amount of the credit facility. For the period from the delivery of our financial statements for the quarter ended September 30, 2019, until we have delivered financial statements for the quarter ended December 31, 2019, the commitment fee will be 0.25% per annum, and thereafter the commitment fee will vary depending on our consolidated leverage ratio, ranging from 0.30% per annum if our consolidated leverage ratio is greater than 2.75 to 1.00, down to 0.15% per annum if our consolidated leverage ratio is equal to or less than 1.50 to 1.00.

Letter of credit participation fees are payable to each lender on the amount of such lender’s letter of credit exposure, during the period from the closing date of the Amended Credit Agreement to but excluding the date which is the later of (i) the date on which such lender’s commitment terminates or (ii) the date on which such lender ceases to have any letter of credit exposure, at a rate per annum equal to the applicable margin for LIBOR loans. Additionally, we will pay a fronting fee to each issuing bank in amounts to be agreed to between us and the applicable issuing bank.

Interest on Alternate Base Rate loans is payable at the end of each calendar quarter. Interest on LIBOR loans is payable at the end of each interest rate period or at the end of each three-month interval within an interest rate period if the period is longer than three months. We may also prepay loans under the Amended Credit Agreement at any time, without penalty, subject to certain notice requirements.

Debt is recorded at the amount drawn on the revolving credit facility plus interest based on floating rates reflective of changes in the market which approximates fair value.

The loans and other obligations under the credit facility are (a) guaranteed by each of our wholly owned material domestic restricted subsidiaries, subject to certain exceptions, and (b) are secured by substantially all of the assets of us and the subsidiary guarantors, including a pledge of all the capital stock of material subsidiaries held directly by us and the subsidiary guarantors (which pledge, in the case of any foreign subsidiary, is limited to 65% of the voting stock), subject to certain customary exceptions and limitations. The Amended Credit Agreement generally prohibits any other liens on the assets of NetScout and its restricted subsidiaries, subject to certain exceptions as described in the Amended Credit Agreement.

The Amended Credit Agreement contains certain covenants applicable to us and our restricted subsidiaries, including, without limitation, limitations on additional indebtedness, liens, various fundamental changes, dividends and distributions, investments (including acquisitions), transactions with affiliates, asset sales, including sale-leaseback transactions, speculative hedge agreements, payment of junior financing, changes in business and other limitations customary in senior secured credit facilities. In addition, we are required to maintain certain consolidated leverage and interest coverage ratios. These covenants and limitations are more fully described in the Amended Credit Agreement. At December 31, 2019, we were in compliance with all of these covenants.

In connection with the Amended Credit Agreement described above, we terminated our previous term loan dated as of July 14, 2015, by and among NetScout; JPMorgan Chase Bank, N.A. (JPMorgan), as administrative agent and collateral agent; J.P. Morgan Securities LLC, KeyBanc Capital Markets, Merrill Lynch, Pierce, Fenner & Smith Incorporated, RBC Capital Markets and Wells Fargo Securities, LLC, as joint lead arrangers and joint bookrunners; Santander Bank, N.A., SunTrust Bank, N.A. and U.S. Bank National Association, as co-documentation agents; and the lenders party thereto.

We have capitalized debt issuance costs totaling $12.2 million at December 31, 2019, which are being amortized over the life of the revolving credit facility. The unamortized balance was $5.3 million as of December 31, 2019. The balance of $1.7 million was included as prepaid expenses and other current assets and a balance of $3.6 million was included as other assets in our consolidated balance sheet.

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Expectations for Fiscal Year 2020

We believe that our cash balances, available debt, short-term marketable securities classified as available-for-sale and future cash flows generated by operations will be sufficient to meet our anticipated cash needs for working capital and capital expenditures for at least the next 12 months.

Additionally, a portion of our cash may be used to acquire or invest in complementary businesses or products or to obtain the right to use complementary technologies. From time to time, in the ordinary course of business, we evaluate potential acquisitions of such businesses, products or technologies. If our existing sources of liquidity are insufficient to satisfy our liquidity requirements, we may seek to sell additional equity or debt securities. The sale of additional equity or debt securities could result in additional dilution to our stockholders.

Recent Accounting Pronouncements

For information with respect to recent accounting pronouncements on our consolidated financial statements, see Note 1 contained in the "Notes to Consolidated Financial Statements" included in Part I of this Quarterly Report on Form 10-Q.

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Item 3. Quantitative and Qualitative Disclosures About Market Risk

Interest Rate Risk. We hold our cash, cash equivalents and investments for working capital purposes. Some of the securities we invest in are subject to market risk. This means that a change in prevailing interest rates may cause the principal amount of the investment to fluctuate. To minimize this risk, we maintain our portfolio of cash, cash equivalents and investments in a variety of securities, including money market funds and government debt securities. The risk associated with fluctuating interest rates is limited to our investment portfolio. Due to the short-term nature of these instruments, we believe that we do not have any material exposure to changes in the fair value of our investment portfolio as a result of changes in interest rates. Declines in interest rates, however, would reduce future interest income. The effect of a hypothetical 10% increase or decrease in overall interest rates would not have had a material impact on our operating results or the total fair value of the portfolio.

We are exposed to market risks related to fluctuations in interest rates related to our credit facility. At December 31, 2019, we owed $450 million on this loan with an interest rate of 3.30%. A sensitivity analysis was performed on the outstanding portion of our debt obligation as of December 31, 2019. Should the current weighted-average interest rate increase or decrease by 10%, the resulting annual increase or decrease to interest expense would be approximately $1.5 million as of December 31, 2019.

Foreign Currency Exchange Risk. As a result of our foreign operations, we face exposure to movements in foreign currency exchange rates, primarily the Euro, British Pound, Canadian Dollar and Indian Rupee. The current exposures arise primarily from expenses denominated in foreign currencies. We currently engage in foreign currency hedging activities in order to limit these exposures. We do not use derivative financial instruments for speculative trading purposes.

At December 31, 2019, we had foreign currency forward contracts with notional amounts totaling $4.9 million. The valuation of outstanding foreign currency forward contracts at December 31, 2019 resulted in an asset balance of $93 thousand, reflecting favorable rates in comparison to current market rates and a liability balance of $11 thousand, reflecting unfavorable contract rates in comparison to current market rates at this date. At March 31, 2019, we had foreign currency forward contracts with notional amounts totaling $4.6 million. The valuation of outstanding foreign currency forward contracts at March 31, 2019 resulted in a liability balance of $68 thousand, reflecting unfavorable contract rates in comparison to current market rates at this date and an asset balance of $58 thousand reflecting favorable rates in comparison to current market rates. The effect of a hypothetical 10% change in foreign currency exchange rates applicable to our business would not have a material impact on our historical consolidated financial statements. As our international operations grow, we will continue to reassess our approach to manage our risk relating to fluctuations in currency rates.

Item 4. Controls and Procedures

At December 31, 2019, NetScout, under the supervision and with the participation of our management, including the Company's principal executive officer and principal financial officer, evaluated the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rule 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (Exchange Act)). Based upon that evaluation, our principal executive officer and principal financial officer concluded that, at December 31, 2019, our disclosure controls and procedures were effective at the reasonable assurance level in ensuring that material information relating to NetScout, including its consolidated subsidiaries, required to be disclosed by NetScout in the reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the SEC's rules and forms, including ensuring that such material information is accumulated and communicated to our management, including our principal executive officer and principal financial officer, as appropriate, to allow timely decisions regarding required disclosure.

There were no changes in our internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f) occurred during the period covered by this quarterly report that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

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PART II: OTHER INFORMATION

Item 1. Legal Proceedings

From time to time, NetScout is subject to legal proceedings and claims in the ordinary course of business. In the opinion of management, the amount of ultimate expense with respect to any current legal proceedings and claims, if determined adversely, will not be material to our financial condition, results of operations or cash flows.

As previously disclosed, in March 2016, Packet Intelligence LLC (Packet Intelligence or Plaintiff) filed a Complaint against NetScout and two subsidiary entities in the United States District Court for the Eastern District of Texas asserting infringement of five United States patents. Plaintiff’s Complaint alleged that legacy Tektronix GeoProbe products, including the G10 and GeoBlade products, infringed these patents. NetScout filed an Answer denying Plaintiff’s allegations and asserting that Plaintiff’s patents were, among other things, invalid, not infringed, and unenforceable due to inequitable conduct. In October 2017, a jury trial was held to address the parties’ claims and counterclaims regarding infringement of three patents by the G10 and GeoBlade products, invalidity of these patents, and damages. On October 13, 2017, the jury rendered a verdict finding in favor of the Plaintiff and that Plaintiff was entitled to $3,500,000 for pre-suit damages and $2,250,000 for post-suit damages. The jury indicated that the awarded damages amounts were intended to reflect a running royalty. In September 2018, the Court entered judgment and "enhanced" the jury verdict in the amount of $2.8 million as a result of a jury finding. The judgment also awards pre- and post-judgment interest, and a running royalty on the G10 and GeoBlade products until the expiration of the patents at issue, the last date being June 2022. The Court denied the Plaintiff's motion for fees. Following additional motions for judgment as a matter of law, the court entered final judgment. On June 12, 2019, we filed our Notice of Appeal of the judgment and all other adverse findings. We have concluded that the risk of loss from this matter is currently neither remote nor probable, and therefore, under GAAP definitions, the risk of loss is termed "reasonably possible". Therefore, accounting rules require us to provide an estimate for the range of potential liability. We currently estimate that the estimated range of liability is between $0 and the aggregate amount awarded by the jury and the Court's award of enhanced damages, plus potential additional pre- and post-judgment interest amounts and costs and any royalties owed on post-trial sales of the accused G10 and GeoBlade products.

Item 1A. Risk Factors

In addition to the other information set forth in this report, you should carefully consider the factors discussed in Part I, Item 1A. “Risk Factors” in our Annual Report on Form 10-K for our fiscal year ended March 31, 2019. The risks discussed in our Annual Report on Form 10-K could materially affect our business, financial condition and future results. There have been no material changes to those risk factors since we filed our Annual Report on Form 10-K. The risks described in our Annual Report on Form 10-K are not the only risks facing us. Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial also may materially and adversely affect our business, financial condition or operating results.

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

Sales of Unregistered Securities

None.

Issuer Purchase of Equity Securities

The following table provides information about purchases we made during the quarter ended December 31, 2019 of equity securities that are registered by us pursuant to Section 12 of the Exchange Act:



Period	Total Number of Shares Purchased (1)	Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs	Maximum Number of Shares That May Yet be Purchased Under the Program
10/1/2019-10/31/2019	—	$	—	—	10,198,754
11/1/2019-11/30/2019	947,866	24.95		938,644	9,260,110
12/1/2019-12/31/2019	65,330	24.29		65,113	9,194,997
Total	1,013,196	$	24.91	1,003,757	9,194,997

(1)

We purchased an aggregate of 9,439 shares during the three months ended December 31, 2019 transferred to us from employees in satisfaction of minimum tax withholding obligations associated with the vesting of restricted stock units during the period. Such purchases reflected in the table do not reduce the maximum number of shares that may be purchased under our previously announced stock repurchase program (our previously disclosed twenty-five million share repurchase program).

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Item 3. Defaults Upon Senior Securities

None.

Item 4. Mine Safety Disclosures

Not Applicable.

Item 5. Other Information

None.

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Item 6. Exhibits


(a)	Exhibits




3.1		Composite conformed copy of Third Amended and Restated Certificate of Incorporation of NetScout (as amended) (filed as Exhibit 3.2 to NetScout's current report on Form 8-K, SEC File No. 000-26251, filed on September 21, 2016, and incorporated herein by reference).

3.2		Amended and Restated By-laws of NetScout (filed as Exhibit 3.1 to NetScout's current report on Form 8-K, SEC File No. 000-26251, filed on October 30, 2017 and incorporated herein by reference).

10.1	+	Form of Restricted Stock Unit Agreement with respect to the NetScout Systems, Inc. 2019 Equity Incentive Plan.

31.1	+	Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

31.2	+	Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

32.1	++	Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

32.2	++	Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

101.INS	+	XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.

101.SCH	+	Inline XBRL Taxonomy Extension Schema Document.

101.CAL	+	Inline XBRL Taxonomy Extension Calculation Linkbase document.

101.DEF	+	Inline XBRL Taxonomy Extension Definition Linkbase document.

101.LAB	+	Inline XBRL Taxonomy Extension Label Linkbase document.

101.PRE	+	Inline XBRL Taxonomy Extension Presentation Linkbase document.

104		The cover page from the Company's Quarterly Report on Form 10-Q for the quarter ended September 30, 2019 formatted in Inline XBRL



+	Filed herewith.
++	Exhibit has been furnished, is not deemed filed and is not to be incorporated by reference into any of the Company's filings under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, irrespective of any general incorporation language contained in any such filing.

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SIGNATURES

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



		NETSCOUT SYSTEMS, INC.

Date: February 6, 2020		/s/ Anil K. Singhal
		Anil K. Singhal
		President, Chief Executive Officer and Chairman
		(Principal Executive Officer)

Date: February 6, 2020		/s/ Jean Bua
		Jean Bua
		Executive Vice President and Chief Financial Officer
		(Principal Financial Officer)
		(Principal Accounting Officer)

Exhibit 10.1

NETSCOUT SYSTEMS, INC.

2019 EQUITY INCENTIVE PLAN

FORM OF RESTRICTED STOCK UNIT AWARD AGREEMENT – TERMS AND CONDITIONS

NetScout Systems, Inc. (the “Company”) has granted to the recipient (as specified in the written notice provided by the Company to such recipient regarding such grant (the “Notice”)) (the “Recipient”), and the Recipient has accepted from the Company (by electronic acceptance or authentication in a form authorized by the Company), an award for the number of restricted stock units (the “RSUs”) specified in the Notice (the “Award”), which represents an equivalent number of shares of Common Stock subject to this Award (the “Underlying Shares”), on the following terms:

1.Grant under Plan. This Award and this Restricted Stock Unit Award Agreement (which includes the Notice and any appendix, exhibit or addendum hereto) (the “Agreement”), is made pursuant to and is governed by the Company’s 2019 Equity Incentive Plan, as amended and in effect from time to time (the “Plan”). Unless otherwise defined herein or required by the context, capitalized terms used herein shall have the same meanings as in the Plan.

2. Vesting.

(a) Vesting Schedule. Subject to the limitations contained herein, if the Recipient has maintained Continuous Service through each vesting date specified in the Notice, a portion of the RSUs shall vest on such date in such amounts as are set forth with respect to such date in the Notice.

(b) Termination of Continuous Service.

(i) If the Recipient’s Continuous Service is terminated by the Company or an Affiliate or by the Recipient for any reason (other than as a result of the Recipient’s death or Disability), whether voluntarily or involuntarily, no additional RSUs shall become vested RSUs under any circumstances with respect to the Recipient and any unvested RSUs shall be forfeited. Any determination under this Agreement as to Continuous Service status or other matters referred to above shall be made in good faith by the Board, whose decision shall be final and binding on all parties.

(ii) If the Recipient’s Continuous Service terminates as a result of the Recipient’s death or Disability, this Award will become fully vested as of the date of such termination, to the extent that this Award is outstanding and unvested as of the date of such termination.

(iii) For purposes hereof, Continuous Service shall not be considered as having terminated during any military leave, sick leave, or other leave of absence, in each case if approved in writing by the Company or an Affiliate and if such written approval, or applicable law, obligates the Company or an Affiliate (by contract or applicable law) to continue the Continuous Service of the Recipient after the approved period of absence (an “Approved Leave of Absence”). In the event of an Approved Leave of Absence, vesting of the RSUs shall be suspended (and all subsequent vesting dates shall be postponed by the length of the period of the Approved Leave of Absence) unless otherwise provided in the Company’s or Affiliate’s written approval of the leave of absence that specifically refers to this Agreement.

(iv) For purposes hereof, Continuous Service will be deemed terminated as of the date the Recipient is no longer actively providing services to the Company or any of its Affiliates (regardless of the reason for such termination and whether or not later found to be invalid or in breach of labor laws in the jurisdiction where the Recipient is employed or otherwise providing services or the terms of the Recipient’s employment or service agreement, if any), and unless otherwise determined by the Company, the Recipient’s right to vest in the Award, if any,

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will terminate as of such date and will not be extended by any notice period or any period of “garden leave” or similar period mandated under labor laws in the jurisdiction where the Recipient is employed or otherwise providing services or the terms of the Recipient’s employment or service agreement, if any).

(v) Notwithstanding anything in the Plan to the contrary, for purposes hereof, Continuous Service shall include service provided by the Recipient to the Company or an Affiliate as a Consultant pursuant to a consulting arrangement between the Recipient and the Company or Affiliate, provided that (x) any such period of service as a Consultant immediately follows the Recipient’s termination of employment with the Company or Affiliate or termination as a Director, in each case without any interruption, and (y) the terms of this Section 2(b)(v) are provided for in a written consulting agreement executed by the Company or Affiliate that specifically refers to this Agreement.

3. Issuance of Underlying Shares.

(a) With respect to any RSUs that become vested RSUs pursuant to Section 2, subject to Sections 5, 6 and 9, the Company shall issue to the Recipient, on or as soon as practicable following the applicable vesting date specified in the Notice, the number of Underlying Shares equal to the number of RSUs vesting on such vesting date.

(b) Notwithstanding the foregoing, if:

(i) this Award is otherwise subject to Tax Obligations (as described in Section 6) on such vesting date,

(ii) such vesting date occurs during either a regularly scheduled or special “blackout period” of the Company applicable to the Recipient or on any other date wherein Recipient is precluded from selling shares of Common Stock on an established stock exchange or stock market (any such blackout period or date, the “Blackout Period”), and

(iii) the Company elects, prior to such vesting date, not to satisfy such Tax Obligations by (x) withholding shares of Common Stock from the Underlying Shares otherwise issuable with respect to such vesting date, (y) permitting the Recipient to enter into a “same day sale” commitment with a broker-dealer pursuant to Section 6 (including, but not limited to, under a previously established 10b5-1 trading plan entered into in compliance with the Company’s policies), and (z) permitting the Recipient to pay such Tax Obligations in cash (including by withholding from the Recipient’s wages or any other cash compensation otherwise payable to the Recipient by the Company or an Affiliate),

then the delivery of the Underlying Shares otherwise issuable with respect to such vesting date will be deferred and such Underlying Shares will be issued to the Recipient as soon as practicable after the expiration of the Blackout Period. Notwithstanding the above, in no event may such Underlying Shares be issued to the Recipient later than the later of: (i) December 31st of the calendar year in which such vesting date occurs, or (ii) if such later issuance would not subject the Recipient to adverse tax consequences under Section 409A of the Code, by the fifteenth (15th) day of the third calendar month following such vesting date; provided that the Recipient acknowledges and agrees that if such Underlying Shares are issued to the Recipient pursuant to this Section 3 while a Blackout Period is still in effect, neither the Company nor the Recipient may sell any shares of Common Stock to satisfy any Tax Obligations, except in compliance with the Company’s insider trading policies and requirements and applicable laws.

(c) The form of issuance of any Underlying Shares (e.g., a stock certificate or electronic entry evidencing such Underlying Shares) shall be determined by the Company.

4. Restrictions on Transfer. The Recipient shall not sell, assign, transfer, pledge, encumber or dispose of any of the RSUs or corresponding Underlying Shares prior to the time that such Underlying Shares have been issued to the Recipient. Notwithstanding the foregoing, by delivering written notice to the Company, in a form satisfactory to the Company, the Recipient may designate a third party who, in the event of the Recipient’s death, shall thereafter be entitled to receive any distributions of Underlying Shares to which the Recipient is entitled at the time of his or her death pursuant to this Agreement.

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5. Compliance with Law. This Award, and the issuance of the Underlying Shares pursuant to this Award, must comply with all applicable laws and regulations governing this Award, and with the applicable regulations of any stock exchange on which the Common Stock is listed for trading at the time of issuance. The Company shall not issue the Underlying Shares to the Recipient if the Company determines that such issuance would not be in material compliance with all such applicable laws and regulations.

6. Withholding Taxes.

(a) This Award shall be subject to withholding of all applicable federal, state, local and foreign income, employment, payroll, fringe benefit, social insurance, payment on account and any other taxes resulting from the issuance or vesting of the RSUs or the delivery of the Underlying Shares (the “Tax Obligations”). The Recipient agrees to pay to the Company or an Affiliate, or otherwise make adequate provisions satisfactory to the Company or Affiliate for the payment of, any sums required to satisfy the Tax Obligations at the time such Tax Obligations arise. Specifically, the Company or an Affiliate may, in its sole discretion, satisfy all or any portion of such Tax Obligations by any of the following means or by a combination of such means:

(i) withholding from the Recipient’s wages or any other compensation otherwise payable to the Recipient by the Company or an Affiliate, provided that the Recipient elects such withholding by providing written notice to the Company or Affiliate at least ten business days before the applicable vesting date specified in the Notice;

(ii) permitting the Recipient to pay such Tax Obligations in cash, provided that the Recipient elects to make such a payment by providing written notice to the Company or Affiliate at least ten business days before the applicable vesting date specified in the Notice;

(iii) permitting the Recipient to enter into a “same day sale” commitment with a broker-dealer that is a member of the Financial Industry Regulatory Authority (a “FINRA Dealer”) whereby the Recipient irrevocably elects to sell a portion of the Underlying Shares to satisfy such Tax Obligations and whereby the FINRA Dealer irrevocably commits to forward the proceeds necessary to satisfy such Tax Obligations directly to the Company or an Affiliate; or

(iv) withholding shares of Common Stock from the Underlying Shares with a Fair Market Value (measured as of the date the Underlying Shares are issued to the Recipient) not in excess of the maximum amount of taxes that may be required to be withheld by law (or such other amount as may be permitted while still avoiding classification of this Award as a liability for financial accounting purposes);

provided, however, that, if the Recipient is an “officer” (within the meaning of Rule 16a-1(f) under the Exchange Act) of the Company or an Affiliate, such Tax Obligations will be satisfied pursuant to the method set forth in clause (iv) above, unless (x) the Compensation Committee of the Board provides otherwise before the applicable vesting date specified in the Notice or (y) the Recipient elects any of the methods set forth in clauses (i)-(iii) above in accordance with the terms set forth in such clauses, as applicable (including in the case of clauses (i) and (ii) above, the requirement to provide written notice to the Company or Affiliate at least ten business days before the applicable vesting date specified in the Notice).

(b) The Company shall have no obligation to issue the Underlying Shares if the Recipient fails to comply with his or her obligations in connection with the Tax Obligations as described in this Section 6.

(c) The Recipient further agrees to take any further actions and execute any additional documents as may be necessary to effectuate the provisions of this Section 6 and the Recipient hereby grants the Company an irrevocable power of attorney to sign such additional documents on the Recipient’s behalf if the Company is unable after reasonable efforts to obtain the Recipient’s signature on such additional documents. Such power of attorney is coupled with an interest and is irrevocable by the Recipient.

(d) Depending on the withholding method, the Company and/or an Affiliate may withhold or account for the Tax Obligations by considering applicable minimum withholding amounts or other applicable withholding rates, including applicable maximum withholding rates in the Recipient’s jurisdiction(s), in which case the Recipient

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may receive a refund of any over-withheld amount in cash and will have no entitlement to the equivalent in shares of Common Stock. If the Tax Obligations are satisfied by withholding in shares of Common Stock, for tax purposes, the Recipient is deemed to have been issued the full number of shares of Common Stock subject to the vested RSUs, notwithstanding that a number of the shares of Common Stock are withheld solely for the purpose of satisfying the Tax Obligations. In the event that any Tax Obligations arise prior to the issuance of any Underlying Shares or it is determined after such issuance that the amount of any Tax Obligations was greater than the amount withheld by the Company or an Affiliate, the Recipient agrees to indemnify and hold the Company and Affiliate harmless from any failure to withhold the proper amount.

1. Arbitration. Any dispute, controversy, or claim arising out of, in connection with, or relating to the performance of this Agreement or its termination shall be settled by arbitration in Boston, Massachusetts, pursuant to the rules for commercial arbitration then obtaining of the American Arbitration Association, before a single arbitrator. The Company agrees to pay the costs of arbitration and each party shall be responsible for their own attorneys’ fees. Any award shall be final, binding and conclusive upon the parties and a judgment rendered thereon may be entered in any court having jurisdiction thereof.

2. Provision of Documentation to Recipient. By accepting this Award, the Recipient acknowledges receipt of a copy of this entire Agreement, a copy of the Plan, and a copy of the Plan’s related prospectus.

3. Section 409A of the Internal Revenue Code. This Award is intended to avoid the potential adverse tax consequences to the Recipient of Section 409A of the Code, and the Board may make such modifications to this Agreement as it deems necessary or advisable to avoid such adverse tax consequences. However, if (i) this Award is not exempt from, and therefore deemed to be deferred compensation subject to, Section 409A of the Code, (ii) the Recipient is deemed by the Company at the time of his or her “separation from service” (as such term is defined in Treasury Regulations Section 1.409A-1(h) without regard to any alternative definition thereunder) to be a “specified employee” for purposes of Section 409A(a)(2)(B)(i) of the Code, and (iii) any of the payments set forth herein are issuable upon such separation from service, then to the extent delayed commencement of any portion of such payments is required to avoid a prohibited distribution under Section 409A(a)(2)(B)(i) of the Code and the related adverse taxation under Section 409A of the Code, such payments will not be provided to the Recipient prior to the earliest of (a) the date that is six months and one day after the date of such separation from service, (b) the date of the Recipient’s death, or (c) such earlier date as permitted under Section 409A of the Code without the imposition of adverse taxation. Upon the first business day following the expiration of such applicable Code Section 409A(a)(2)(B)(i) period, all payments deferred pursuant to this Section 9 will be paid in a lump sum to the Recipient, and any remaining payments due will be paid as otherwise provided herein. Each installment of RSUs that vests under this Award is a “separate payment” for purposes of Treasury Regulations Section 1.409A-2(b)(2).

4. Rights as Stockholder. The Recipient shall have no voting or any other rights as a stockholder of the Company with respect to any RSUs covered by this Agreement until the issuance of the Underlying Shares.

5. Non-U.S. and Country-Specific Provisions. If the Recipient works or resides in a country outside the United States, or is otherwise subject to the laws of a country other than the United States, the RSUs and any Underlying Shares acquired under the Plan shall be subject to the additional terms and conditions set forth in Appendix A to this Agreement and to any special terms and conditions set forth in Appendix B for the Recipient’s country. Moreover, if the Recipient relocates to a country outside the United States, the terms and conditions set forth in Appendices A and B will apply to the Recipient, to the extent the Company determines that the application of such terms and conditions is necessary or advisable for legal or administrative reasons. Appendices A and B constitute part of this Agreement.

6. Imposition of Other Requirements. The Company reserves the right to impose other requirements on the Recipient’s participation in the Plan, on the RSUs and on any Underlying Shares acquired under the Plan, to the extent the Company determines it is necessary or advisable for legal or administrative reasons, and to require the Recipient to sign or otherwise accept any additional agreements or undertakings that may be necessary to accomplish the foregoing.

7. Miscellaneous.

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(a) Notices; Electronic Delivery and Participation. All notices hereunder shall be given in writing (including electronically) and shall be deemed given upon receipt or, in the case of notices delivered by mail, when sent by certified or registered mail, postage prepaid, return receipt requested, if to the Recipient, to the address shown on the records of the Company, and if to the Company, to the Company’s principal executive offices, attention of the Corporate Secretary. The Company, in its sole discretion, may decide to deliver any documents related to this Award or participation in the Plan by electronic means or to request the Recipient’s consent to participate in the Plan by electronic means. By accepting this Award, the Recipient consents to receive such documents by electronic delivery and to participate in the Plan through an on-line or electronic system established and maintained by the Company or another third party designated by the Company.

(b) Entire Agreement; Modification. This Agreement, together with the Plan, constitutes the entire agreement between the parties relative to the subject matter hereof, and supersedes all proposals, written or oral, and all other communications between the parties relating to the subject matter of this Agreement. This Agreement may be modified, amended or rescinded only by a written agreement executed by both parties to this Agreement; provided, however, that notwithstanding the foregoing, this Agreement may be modified, amended or rescinded by the Company without the Recipient’s written consent if such modification, amendment or rescission (i) is in writing and executed by a duly authorized representative of the Company and (ii) complies with Section 2(b)(viii) of the Plan. This Award is subject to all the provisions of the Plan, the provisions of which are hereby made a part of this Award, and is further subject to all interpretations, amendments, rules and regulations which may from time to time be promulgated and adopted pursuant to the Plan. Except as otherwise expressly provided in this Agreement, in the event of a conflict between the terms of this Agreement and the Plan, the terms of the Plan shall control.

(c) Capitalization Adjustments. Any additional RSUs and Underlying Shares, cash or other property that become subject to this Award pursuant to any Capitalization Adjustment will be subject, in a manner determined by the Board, to the same forfeiture restrictions, restrictions on transferability, and time and manner of issuance as applicable to the other RSUs subject to this Award to which they relate. All fractional RSUs or Underlying Shares resulting from any Capitalization Adjustment shall be rounded down to the nearest whole unit or share.

(d) Severability. The invalidity, illegality or unenforceability of any provision of this Agreement shall in no way affect the validity, legality or enforceability of any other provision.

(e) Successors and Assigns. This Agreement shall be binding upon and inure to the benefit of the parties hereto and their respective successors and assigns, subject to the limitations set forth herein.

(f) Governing Law. This Agreement shall be governed by and interpreted in accordance with the laws of Delaware without giving effect to the principles of conflicts of laws thereof.

(g) No Obligation to Continue Service. Neither the Plan nor this Agreement (nor any provision in the Plan or this Agreement) (i) is an employment or service contract, or (ii) will be deemed to create any obligation on the Recipient’s part to continue in the service of the Company or an Affiliate, or on the part of the Company or an Affiliate to continue such service. In addition, nothing in the terms of this Award will obligate the Company or an Affiliate, their respective stockholders, boards of directors, Officers or Employees to continue any relationship that the Recipient might have as an Employee, Director or Consultant.

(h) Clawback/Recovery. Notwithstanding anything to the contrary in this Agreement, but subject to applicable law, this Award will be subject to recoupment, repayment and/or forfeiture in accordance with any clawback policy that the Company is required to adopt pursuant to the listing standards of any national securities exchange or association on which the Company’s securities are listed or as is otherwise required by the Dodd-Frank Wall Street Reform and Consumer Protection Act or other applicable law, and any other clawback policy that the Company otherwise adopts.

(i) No Advice Regarding Grant; Tax Consequences. The Company is not providing any tax, legal or financial advice, nor is the Company making any recommendations regarding the Recipient’s participation in the Plan, or his or her acquisition or sale of the Underlying Shares. The Recipient should consult with his or her own tax, legal and financial advisors regarding participation in the Plan before taking any action related to the Plan. The Company

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has no duty or obligation to minimize the tax consequences to the Recipient of this Award and will not be liable to the Recipient for any adverse tax consequences to the Recipient arising in connection with this Award.

(j) Dividends. The Recipient will receive no benefit or adjustment to this Award with respect to any cash dividend, stock dividend or other distribution, except as provided in the Plan with respect to a Capitalization Adjustment.

(k) Unsecured Obligation. This Award is unfunded, and as a holder of vested RSUs, the Recipient will be considered an unsecured creditor of the Company with respect to the Company’s obligation, if any, to issue shares of Common Stock or other property pursuant to this Agreement.

(l) Effect on Other Employee Benefit Plans. The value of this Award will not be included as compensation, earnings, salaries, or other similar terms used when calculating the Recipient’s benefits under any employee benefit plan sponsored by the Company or an Affiliate, except as such plan otherwise expressly provides. The Company expressly reserves its rights to amend, modify, or terminate any such plan in accordance with the terms of such plan.

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APPENDIX A

NETSCOUT SYSTEMS, INC.

2019 EQUITY INCENTIVE PLAN

RESTRICTED STOCK UNIT AWARD AGREEMENT

ADDITIONAL TERMS AND CONDITIONS
FOR RECIPIENTS OUTSIDE THE UNITED STATES

Capitalized terms used but not defined in this Appendix A shall have the same meanings as in the Agreement and/or the Plan, as applicable.

This Appendix A includes additional terms and conditions that govern the RSUs and any Underlying Shares acquired under the Plan if the Recipient works or resides in a country outside the United States, or is otherwise subject to the laws of a country other than the United States.

1. Nature of Grant. By accepting this Award, the Recipient acknowledges, understands and agrees that:

(a) the Plan is established voluntarily by the Company, it is discretionary in nature, and it may be modified, amended, suspended or terminated by the Company at any time, provided that such modification, amendment, suspension or termination is in accordance with the terms of the Plan;

(b) the grant of this Award is exceptional, voluntary and occasional and does not create any contractual or other right to receive future grants of any RSUs, any benefits in lieu of RSUs or any other awards under the Plan, even if any such RSUs, benefits or other awards have been granted in the past;

(c) all decisions with respect to any future RSUs or the grant of any other awards under the Plan will be at the sole discretion of the Company;

(d) the Recipient is voluntarily participating in the Plan;

(e) the RSUs and the Underlying Shares, and the income from and value of same, are not intended to replace any pension rights or compensation;

(f) unless otherwise agreed with the Company, the RSUs and the Underlying Shares, and the income from and value of same, are not granted as consideration for, or in connection with, the service the Recipient may provide as a director of any Affiliate;

(g) the RSUs and the Underlying Shares, and the income from and value of same, are not part of normal or expected compensation for any reason, including without limitation, calculating any severance, resignation, termination, redundancy, dismissal, end-of-service payments, bonuses, long-service awards, indemnification, pension or retirement or welfare benefits or similar payments, benefits or rights of any kind, and in no event should be considered as compensation for or relating in any way to, past services for the Company and/or any Affiliate that employs the Recipient (the “Employer”);

(h) the future value of the Underlying Shares is unknown, indeterminable and cannot be predicted with certainty;

(i) no claim or entitlement to compensation or damages shall arise from the forfeiture of the RSUs resulting from the termination of Recipient’s Continuous Service (for any reason whatsoever, whether or not later found to be invalid or in breach of employment or other laws in the jurisdiction where the Recipient is employed or otherwise rendering services, or the terms of his or her employment or service agreement, if any); and

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(j) neither the Company nor any Affiliate shall be liable for any foreign exchange rate fluctuation between the Recipient’s local currency and the U.S. Dollar that may affect the value of the RSUs or any amounts due to the Recipient pursuant to the settlement of the RSUs or subsequent sale of Underlying Shares acquired upon settlement.

2. Data Privacy. If the Recipient would like to participate in the Plan, the Recipient will need to review the information provided in this Data Privacy section and, where applicable, declare the Recipient’s consent to the processing and/or transfer of personal data as described below.

(a) EEA+ Controller and Representative. If the Recipient is based in the European Union (“EU”), the European Economic Area, Switzerland or, if and when the United Kingdom leaves the European Union, the United Kingdom (collectively “EEA+”), the Recipient should note that the Company, with its registered address at 310 Littleton Road, Westford, MA 01886, U.S.A., is the controller responsible for the processing of the Recipient’s personal data in connection with the Agreement and the Plan. The Company’s representative in the EU is Felix Wittern, Felix.Wittern@fieldfisher.com, Fieldfisher (Germany) LLP, Am Sandtorkai 68, 20457 Hamburg, Germany.

(b) Data Collection and Usage. The Company collects, uses and otherwise processes certain personal data about the Recipient, including, but not limited to, the Recipient’s name, home address and telephone number, email address, date of birth, social insurance number, passport or other identification number (e.g., resident registration number), salary, nationality, job title, any shares of stock or directorships held in the Company, details of all RSUs or any other entitlement to shares of stock awarded, canceled, exercised, vested, unvested or outstanding in the Recipient’s favor, which the Company receives from the Recipient, the Employer or otherwise in connection with this Agreement or the Plan (“Data”), for the purposes of implementing, administering and managing the Plan and allocating shares of Common Stock pursuant to the Plan.

If the Recipient is based in the EEA+, the legal basis, where required, for the processing of Data by the Company is the necessity of the data processing for the Company to (i) perform its contractual obligations under this Agreement, (ii) comply with legal obligations established in the EEA+, or (iii) pursue the legitimate interest of complying with legal obligations established outside of the EEA+.

If the Recipient is based outside of the EEA+, the legal basis, where required, for the processing of Data by the Company is the Recipient consent, as further described below.

(c) Stock Plan Administration Service Providers. The Company transfers Data to Merrill Lynch, an independent service provider, which is assisting the Company with the implementation, administration and management of the Plan (“Merrill Lynch”). In the future, the Company may select a different service provider and share Data with such other provider serving in a similar manner. Merrill Lynch will open an account for the Recipient to receive and trade shares of Common Stock acquired under the Plan. The Recipient may be asked to agree on separate terms and data processing practices with Merrill Lynch with such agreement being a condition to the ability to participate in the Plan.

(d) International Data Transfers. In the event the Recipient resides, works or is otherwise located outside of the U.S., Data will be transferred from the Recipient’s country to the U.S., where the Company and its service providers are based. The Recipient understands and acknowledges that the U.S. is not subject to an unlimited adequacy finding by the European Commission and might not provide a level of protection of personal data equivalent to the level of protection in the Recipient’s country. As a result, in the absence of a self‑certification of the data recipient in the U.S. under the EU/U.S. Privacy Shield Framework or the implementation of appropriate safeguards such as the Standard Contractual Clauses adopted by the EU Commission, the processing of personal data might not be subject to substantive data processing principles or supervision by data protection authorities. In addition, data subjects might have no or less enforceable rights regarding the processing of their personal data.

The Company is self-certified under the EU/U.S. Privacy Shield Framework and the Switzerland/U.S. Privacy Shield Framework (collectively, the “Privacy Shield Frameworks”). Merrill Lynch is not self-certified under the Privacy Shield Frameworks.

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If the Recipient is based in the EEA+, Data will be transferred from the EEA+ to the Company based on the Company’s self-certification under the Privacy Shield Frameworks. The onward transfer of Data from the Company to Merrill Lynch or, as the case may be, a different service provider of the Company, is conducted without appropriate safeguards based solely on the Recipient’s consent, as further described below.

If the Recipient is based outside of the EEA+, the Company’s legal basis, where required, for the transfer of Data from the Recipient’s country to the Company and from the Company onward to Merrill Lynch or, as the case may be, a different service provider of the Company, is the Recipient’s consent, as further described below.

(e) Data Retention. The Company will hold and use the Data only as long as is necessary to implement, administer and manage the Recipient’s participation in the Plan, or as required to comply with legal or regulatory obligations, including under tax and security laws.

(f) Data Subject Rights. The Recipient may have a number of rights under data privacy laws in his or her jurisdiction. Depending on where the Recipient is based, such rights may include the right to (i) request access or copies of Data the Company processes, (ii) the rectification or amendment of incorrect or incomplete Data, (iii) the deletion of Data, (iv) request restrictions on the processing of Data, (v) object to the processing of Data for legitimate interests, (vi) the portability of Data, (vi) lodge complaints with competent authorities in the Recipient’s jurisdiction, and/or to (viii) receive a list with the names and addresses of any potential recipients of Data. To receive additional information regarding these rights or to exercise these rights, the Recipient can contact dataprivacy@netscout.com.

(g) Necessary Disclosure of Data. The Recipient understands that providing the Company with Data is necessary for the performance of the Agreement and that the Recipient refusal to provide Data would make it impossible for the Company to perform its contractual obligations and may affect the Recipient ability to participate in the Plan.

(h) Voluntariness and Consequences of Consent Denial or Withdrawal. Participation in the Plan is voluntary and the Recipient is providing any consents referred to herein on a purely voluntary basis. The Recipient understands that he or she may withdraw any such consent at any time with future effect for any or no reason. If the Recipient does not consent, or if the Recipient later seeks to withdraw the Recipient’s consent, the Recipient’s salary from or employment and career with the Employer will not be affected; the only consequence of refusing or withdrawing the Recipient’s consent is that the Company would not be able to grant the RSUs or other awards to the Recipient or administer or maintain the RSUs. For more information on the consequences of refusal to consent or withdrawal of consent, the Recipient should contact dataprivacy@netscout.com.

Declaration of Consent. If the Recipient is based in the EEA+, by accepting the RSUs and indicating consent via the Company’s online acceptance procedure, the Recipient explicitly declares his or her consent to the onward transfer of Data by the Company to Merrill Lynch or, as the case may be, a different service provider of the Company in the U.S. as described in Section (c) above.

If the Recipient is based outside of the EEA+, by accepting the RSUs and indicating consent via the Company’s online acceptance procedure, the Recipient explicitly declares his or her consent to the entirety of the Data processing operations described in this section including, without limitation, the onward transfer of Data by the Company to Merrill Lynch or, as the case may be, a different service provider of the Company in the U.S.

3. Arbitration. The following provision replaces Section 7 of the Agreement if the Recipient works or resides in a country outside the United States, or is otherwise subject to the laws of a country other than the United States:

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Any dispute, controversy or claim arising out of, in connection with, or relating to the performance of this Agreement or its termination shall be settled by arbitration, pursuant to the rules of the International Centre for Dispute Resolution (ICDR). The arbitration shall be conducted by a single arbitrator chosen by the parties or, if the parties cannot agree upon a single arbitrator within thirty (30) days, then by a single arbitrator appointed by the ICDR. The arbitration shall take place in Suffolk County, Massachusetts, U.S.A. and shall be conducted in the English language. The Company agrees to pay the costs of the arbitration and each party shall be responsible for their own costs, fees, and expenses (including of its own counsel, experts and witnesses) in preparing and presenting its case. Any award shall be final, binding and conclusive upon the parties.

4. Language. The Recipient acknowledges that he or she is proficient in the English language or has consulted with an advisor who is sufficiently proficient in English, so as to allow the Recipient to understand the terms and conditions of this Agreement. If the Recipient receives this Agreement or any other document related to the Plan translated into a language other than English and if the meaning of the translated version is different than the English version, the English version will control.

5. Insider Trading Restrictions/Market Abuse Laws. The Recipient understands that he or she may be subject to insider trading restrictions and/or market abuse laws in applicable jurisdictions, including but not limited to the United States, the Recipient’s country, the Employer’s country, and the country in which the shares of Common Stock may be listed, which may affect the Recipient’s ability, directly or indirectly, to purchase or sell or attempt to sell or otherwise dispose of shares of Common Stock, rights to shares of Common Stock (e.g., the RSUs), or rights linked to the value of shares of Common Stock during such times as the Recipient is considered to have “inside information” regarding the Company (as defined by the laws in the applicable jurisdiction(s)). Local insider trading laws and regulations prohibit the cancellation or amendment of orders the Recipient placed before possessing the inside information. Furthermore, the Recipient understands that he or she may be prohibited from (i) disclosing the inside information to any third party, including fellow employees (other than on a “need to know” basis) and (ii) “tipping” third parties by sharing with them Company inside information, or otherwise causing third parties to buy or sell Company securities. Any restrictions under these laws or regulations are separate from and in addition to any restrictions that may be imposed under any applicable Company insider trading policy. It is the Recipient’s responsibility to comply with any applicable restrictions and the Recipient should consult with his or her personal legal advisor on this matter.

6. Foreign Asset/Account, Exchange Control and Tax Reporting. The Recipient acknowledges that, depending on his or her country, the Recipient may be subject to foreign asset and/or account reporting requirements and exchange controls which affect his or her ability to acquire or hold shares under the Plan or cash received from participating in the Plan (including from any dividends received or sale proceeds arising from the sale of shares) in a brokerage account outside of the Recipient’s country. The Recipient may also be required to repatriate sale proceeds or funds received as a result of his or her participation in the Plan to his or her country through a designated bank and/or broker within a certain time after receipt. In addition, the Recipient may be subject to tax payment and/or reporting obligations in connection with any income realized under the Plan and/or from the sale of the Underlying Shares. The Recipient acknowledges that he or she is responsible for ensuring compliance with any such requirements and is advised to consult with his or her personal legal advisors, as applicable, to ensure compliance.

7. Waiver. The Recipient acknowledges that a waiver by the Company of breach of any provision of this Agreement shall not operate or be construed as a waiver of any other provision of the Agreement, or of any subsequent breach by the Recipient or any other recipient.

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APPENDIX B

NETSCOUT SYSTEMS, INC.

2019 EQUITY INCENTIVE PLAN

RESTRICTED STOCK UNIT AWARD AGREEMENT

COUNTRY SPECIFIC TERMS AND CONDITIONS
FOR RECIPIENTS OUTSIDE THE UNITED STATES

Capitalized terms used but not defined in this Appendix B shall have the same meanings as in the Agreement and/or the Plan, as applicable.

Terms and Conditions

This Appendix B includes special terms and conditions that govern the RSUs and any Underlying Shares acquired under the Plan if the Recipient works or resides in one of the countries listed below, or is otherwise subject to the laws of one of the countries listed below. If the Recipient is a citizen (or is considered as such for local law purposes) of a country other than the country in which he or she is currently working or residing, or if he or she relocates to another country after this Award is granted, the Recipient acknowledges and agrees that the Company will, in its discretion, determine the extent to which the terms and conditions contained herein will be applicable to the Recipient.

Notifications

This Appendix B also includes securities law information related to participation in the Plan if the Recipient works or resides in one of the countries listed below.

There are no special terms and conditions or notifications for Austria, Belgium, Czech Republic, Germany, India, Ireland, Japan, (South) Korea, the Netherlands, Norway, Poland, Qatar, South Africa, Sweden, or Thailand.

ARGENTINA

Terms and Conditions

Securities Law Information. Neither the Award or the Underlying Shares are publicly offered or listed on any stock exchange in Argentina. This offer is private and not subject to any filing or disclosure requirements in Argentina.

AUSTRALIA

Terms and Conditions

Nature of Plan and RSUs. The Plan is a plan to which Subdivision 83A-C of the Income Tax Assessment Act 1997 (Cth) applies (subject to the conditions of the Act).

Australia Offer Document. The grant of the RSUs is intended to comply with the provisions of the Corporations Act, 2011, Australian Securities & Investments Commission (“ASIC”) Regulatory Guide 49 and ASIC Class Order CO 14/1000. Additional details are set forth in the Offer Document for the offer of RSUs to Australian Resident Employees, which is being provided to the Recipient along with this Agreement.

BRAZIL

Terms and Conditions

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Compliance with Law. By accepting the RSUs, the Recipient acknowledges that he or she will comply with applicable Brazilian laws and pay any and all applicable Tax Obligations associated with the vesting and settlement of the RSUs, the receipt of any dividend equivalents or dividends and the sale of shares of Common Stock acquired under the Plan.

Nature of Grant. The following provision supplements Section 1 of Appendix A:

By accepting the RSUs, the Recipient acknowledges that (i) he or she is making an investment decision, (ii) the Underlying Shares will be issued to the Recipient only if the vesting conditions are met, and (iii) the value of the Underlying Shares is not fixed and may increase or decrease without compensation to the Recipient.

CANADA

Terms and Conditions

Issuance of Underlying Shares. As provided in Section 3 of the Agreement, with respect to any RSUs that become vested RSUs under the Agreement, the Company shall issue to the Recipient a number of Underlying Shares, as described in Section 3 of the Agreement. For the avoidance of doubt, vested RSUs will not be settled in cash.

The following provisions apply if the Recipient resides in Quebec:

Consent to Receive Information in English. The parties acknowledge that it is their express wish that the Agreement, as well as all documents, notices and legal proceedings entered into, given or instituted pursuant hereto or relating directly or indirectly hereto, be drawn up in English.

Consentement Pour Recevoir Des Informations en Anglais. Les parties reconnaissent avoir exigé la rédaction en anglais de la convention, ainsi que de tous documents, avis et procédures judiciaires, exécutés, donnés ou intentés en vertu de, ou liés directement ou indirectement, à la présente convention.

Data Privacy. The following provision supplements Section 2 of Appendix A:

The Recipient hereby authorizes the Company and the Company’s representatives to discuss and obtain all relevant information from all personnel, professional or non-professional, involved in the administration of the Plan. The Recipient further authorizes the Company, the Employer and/or any Affiliate to disclose and discuss such information with their advisors. The Recipient also authorizes the Company, the Employer and/or any Affiliate to record such information and to keep such information in the Recipient’s employment file.

Notifications

Securities Law Information. The Recipient is permitted to sell the Underlying Shares acquired under the Plan through the designated broker appointed under the Plan, provided the sale of shares takes place outside Canada through the facilities of a stock exchange on which the Common Stock is listed.

CHINA

Terms and Conditions

Issuance of Underlying Shares. The following provision replaces Section 3 of the Agreement:

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trades) on the applicable vesting date (or the prior trading day if the vesting date is not a trading day). Any references to the issuance of shares of Common Stock in any documents related to the RSUs shall be interpreted accordingly.

COLOMBIA

Terms and Conditions

Nature of Grant. The following provision supplements Section 1 of Appendix A:

Pursuant to Article 128 of the Colombian Labor Code, amended by Article 15 Law 50, 1990, the Plan and related benefits do not constitute a component of “salary” for any legal purpose. Therefore, the RSUs and related benefits will not be included and/or considered for purposes of calculating any and all labor benefits, such as legal/fringe benefits, vacations, indemnities, payroll taxes, social insurance contributions and/or any other labor-related amount which may be payable.

Notifications

Securities Law Information. The Underlying Shares are not and will not be registered in the Colombian registry of publicly traded securities (Registro Nacional de Valores y Emisores) and, therefore the Underlying Shares may not be offered to the public in Colombia. Nothing in the Plan, the Agreement (including this Appendix B) or any other document evidencing the grant of the RSUs shall be construed as the making of a public offer of securities in Colombia.

FRANCE

Terms and Conditions

Non-Tax-Qualified Award. The RSUs are not eligible for the specific tax and social regime provided by section L. 225-197-1 to L. 225-197-6 of the French Commercial Code and the relevant sections of the French Tax Code or French Social Security Code.

Language Consent. By accepting the RSUs, the Recipient confirms having read and fully understood the Plan and the Agreement, which were provided in the English language. The Recipient accepts the terms of those documents accordingly.

Consentement Relatif à la Langue Utilisée. En acceptant les droits sur actions assujettis à restrictions (« restricted stock units » ou « RSUs »), le Beneficiare confirme avoir lu et parfaitement compris le Plan et le Contract d’Attribution qui ont été communiqués en langue anglaise. Le Beneficiare accepte les termes de ces documents en connaissance de cause.

HONG KONG

Terms and Conditions

Issuance of Underlying Shares. The Underlying Shares received under the Plan are accepted as a personal investment. In the event the RSUs vest and Underlying Shares are issued to the Recipient within six months of the grant of RSUs, the Recipient agrees that he or she will not dispose of the Underlying Shares acquired prior to the six-month anniversary of the grant of RSUs.

Notifications

Securities Law Information. The RSUs and Underlying Shares issued upon vesting of the RSUs do not constitute a public offering of securities under Hong Kong law and are available only to employees of the Company or an Affiliate.

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The Agreement, including Appendix A and Appendix B, the Plan, and other incidental communication materials have not been prepared in accordance with and are not intended to constitute a “prospectus” for a public offering of securities under the applicable securities legislation in Hong Kong, nor have the documents been reviewed by any regulatory authority in Hong Kong. The Agreement, including this Appendix A and Appendix B, the Plan and other incidental communication materials are intended only for personal use of each eligible employee and not for distribution to any other person. The Recipient should exercise caution in relation to the RSUs. If the Recipient has questions about any of the contents of the Agreement, including Appendix A and this Appendix B, or the Plan, he or she should contact a legal or other professional advisor.

ITALY

Terms and Conditions

Grant Terms Acknowledgement. By accepting the RSUs, the Recipient acknowledges having received and reviewed the Plan and the Agreement, including Appendix A and this Appendix B, in their entirety and fully understands and accepts all provisions of the Plan and the Agreement, including Appendix A and this Appendix B.

The Recipient further acknowledges that he or she has specifically read and expressly approves the following provisions of the Agreement: Section 2 (“Vesting”), Section 6 (“Withholding Taxes”), Section 12 (“Imposition of Other Requirements”), Section 13(f) (“Governing Law”), and Appendix A, Section 3 (“Arbitration”).

INDONESIA

Terms and Conditions

Language Consent and Notification. By accepting the RSUs, the Recipient (i) confirms having read and understood the documents relating to the grant (i.e., the Plan and the Agreement) which were provided in the English language, (ii) accepts the terms of those documents accordingly, and (iii) agrees not to challenge the validity of this document based on Law No. 24 of 2009 on National Flag, Language, Coat of Arms and National Anthem or the implementing Presidential Regulation (when issued).

Persetujuan dan Pemberitahuan Bahasa. Dengan menerima pemberian Unit Saham Terbatas ini, Peserta (i) memberikan konfirmasi bahwa dirinya telah membaca dan memahami dokumen-dokumen berkaitan dengan pemberian ini (yaitu, Perjanjian Penghargaan dan Program) yang disediakan dalam Bahasa Inggris, (ii) menerima persyaratan di dalam dokumen-dokumen tersebut, dan (iii) setuju untuk tidak mengajukan keberatan atas keberlakuan dari dokumen ini berdasarkan Undang-Undang No. 24 Tahun 2009 tentang Bendera, Bahasa dan Lambang Negara serta Lagu Kebangsaan ataupun Peraturan Presiden sebagai pelaksanaannya (ketika diterbitkan).

MALAYSIA

Terms and Conditions

Data Privacy. The following provision supplements Section 2 of Appendix A:

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The Recipient hereby explicitly, voluntarily and unambiguously consents to the collection, use and transfer, in electronic or other form, of the Recipient’s personal data as described in this Agreement and any other Plan materials by and among, as applicable, the Employer, the Company and any Affiliate for the exclusive purpose of implementing, administering and managing the Recipient’s participation in the Plan. The Recipient understands that the Company and the Employer may hold certain personal information about the Recipient, including, but not limited to, the Recipient’s name, home address, email address and telephone number, date of birth, social insurance number, passport or other identification number, salary, nationality, job title, any shares of stock or directorships held in the Company, details of any entitlement to shares awarded, cancelled, exercised, vested, unvested or outstanding in the Recipient’s favor for the purpose of implementing, administering and managing the Plan (“Data”). The Recipient understands that the Data will be transferred to Merrill Lynch or such other stock plan providers as may be selected by the Company in the future, which is assisting the Company with the implementation, administration and management of the Plan. The Recipient understands that those receiving the Data may be located in the United States or elsewhere, and that the applicable country (e.g., the United States) may have different data privacy laws and protections than the Recipient’s country. The Recipient understands that he or she may request a list with the names and addresses of any potential recipients of Data by contacting his or her human resources representative. The Recipient authorizes the Company, and any other possible recipients which may assist the Company (presently or in the future) with implementing, administering and managing the Plan to receive, possess, use, retain and transfer Data, in electronic or other form, for the sole purpose of implementing, administering and managing the Recipient’s participation in the Plan. The Recipient understands that Data will be held only as long as is necessary to implement, administer and manage his or her participation in the Plan. The Recipient understands that he or she may, at any time, view Data, request additional information about the storage and processing of Data, require any necessary amendments to Data or refuse or withdraw the consents herein, in any case, without cost, by contacting in writing his or her local human resources representative, whose contact details are Cathy.Plunkett@netscout.com. Further, the Recipient understands that he or she is providing the consents herein on a purely voluntary basis. If the Recipient does not consent, later seeks to revoke the consent, the Recipient’s employment status or service with the Employer will not be affected; the only consequence of refusing or withdrawing the consents herein is that the Company would not be able to grant this Award or any other awards under the Plan, or administer or maintain this Award or any other such awards. Therefore, the Recipient understands that refusing or withdrawing his or her consent may affect the Recipient’s ability to participate in the Plan. For more information on the consequences of the refusal to consent or withdrawal of consent, the Recipient understands that he or she may contact his or her human resources representative.	Penerima dengan ini secara eksplicit, secara sukarela dan tanpa sebarang keraguan mengizinkan pengumpulan, penggunaan dan pemindahan, dalam bentuk elektronik atau lain-lain, data peribadi Penerima seperti yang dinyatakan dalam Perjanjian ini dan apa-apa bahan Pelan, oleh dan di antara, sebagaimana yang berkenaan, Majikan, Syarikat, dan mana-mana Syarikat Bergabung bagi tujuan ekslusif untuk melaksanakan, mentadbir, dan menguruskan penyertaan Penerima dalam Pelan tersebut. Penerima memahami bahawa Syarikat dan Majikan mungkin memegang maklumat peribadi tertentu tentang Penerima, termasuk, tetapi tidak terhad kepada, nama, alamat rumah, alamat emel dan nombor telefon, tarikh lahir, insurans sosial, nombor pasport atau nombor pengenalan lain, gaji, kewarganegaraan, jawatan Penerima, apa-apa syer dalam saham atau jawatan pengarah yang dipegang dalam Syarikat, butir-butir apa-apa hak untuk syer yang dianugerahkan, dibatalkan, dilaksanakan, terletak hak, tidak diletak hak ataupun tertunggak bagi faedah Penerima untuk melaksanakan, mentadbir dan menguruskan Pelan tersebut (“Data”). Penerima memahami bahawa Data akan dipindah kepada Merrill Lynch atau pembekal-pembekal pelan saham yang lain sebagaimana yang dipilih oleh Syarikat pada masa depan, yang membantu Syarikat dalam pelaksanaan, pentadbiran dan pengurusan Pelan tersebut. Penerima memahami bahawa mereka yang menerima Data mungkin berada di Amerika Syarikat atau di tempat lain, dan negara yang berkenaan (contohnya, Amerika Syarikat) mungkin mempunyai undang-undang privasi data dan perlindungan yang berbeza daripada negara Penerima. Penerima memahami bahawa dia boleh meminta senarai nama dan alamat mana-mana pihak yang mungkin menerima Data dengan menghubungi wakil sumber manusianya. Penerima memberi kuasa kepada Syarikat, dan mana-mana penerima lain yang mungkin membantu Syarikat (masa sekarang atau pada masa depan) untuk melaksanakan, mentadbir dan menguruskan Pelan tersebut untuk menerima, memiliki, menggunakan, mengekalkan dan memindahkan Data, dalam bentuk elektronik atau lain-lain, semata-mata dengan tujuan untuk melaksanakan, mentadbir dan menguruskan penyertaan Penerima dalam Pelan tersebut. Penerima memahami bahawa Data akan dipegang hanya untuk tempoh yang diperlukan untuk melaksanakan, mentadbir dan menguruskan penyertaannya dalam Pelan tersebut. Penerima memahami bahawa dia boleh, pada bila-bila masa, melihat data, meminta maklumat tambahan mengenai penyimpanan dan pemprosesan Data, meminta apa-apa pindaan dilaksanakan ke atas Data atau menolak atau menarik balik persetujuan dalam ini, dalam mana-mana kes, tanpa kos, dengan menghubungi secara bertulis wakil sumber manusianya, di mana butir-butir hubungannya adalah Cathy.Plunkett@netscout.com. Selanjutnya, Penerima memahami bahawa dia memberikan persetujuan di sini secara sukarela. Jika Penerima tidak bersetuju, kemudian membatalkan persetujuannya, status pekerjaan atau perkhidmatan Penerima dengan Majikan tidak akan terjejas; satunya akibat jika dia tidak bersetuju atau menarik balik persetujuannya adalah bahawa Syarikat tidak akan dapat memberikan Anugerah ini atau mana-mana anugerah lain di bawah Pelan ini atau mentadbir atau mengekalkan Anugerah ini atau mana-mana anugerah lain. Oleh itu, Penerima memahami bahawa keengganan atau penarikan balik persetujuannya boleh menjejaskan keupayaan Penerima untuk mengambil bahagian dalam Pelan tersebut. Untuk maklumat lanjut mengenai akibat keengganannya untuk memberikan keizinan atau penarikan balik keizinan, Penerima memahami bahawa dia boleh menghubungi wakil sumber manusianya.

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MEXICO

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Acknowledgement of the Agreement. By accepting the RSUs, the Recipient acknowledges that he or she has received a copy of the Plan and the Agreement, including Appendix A and this Appendix B, which he or she has reviewed. The Recipient further acknowledges that he or she accepts all the provisions of the Plan and the Agreement, including Appendix A and this Appendix B. The Recipient also acknowledges that he or she has read and specifically and expressly approves the terms and conditions set forth in the “Nature of Grant” section of Appendix A, which clearly provides as follows: (1) The Recipient’s participation in the Plan does not constitute an acquired right; (2) The Plan and the Recipient’s participation in it are offered by the Company on a wholly discretionary basis; (3) The Recipient’s participation in the Plan is voluntary; and (4) The Company and its Affiliates are not responsible for any decrease in the value of any Underlying Shares acquired under the Plan. Labor Law Acknowledgement and Policy Statement. By accepting the RSUs, the Recipient acknowledges that the Company, with registered offices at 310 Littleton Road, Westford, MA 01886, U.S.A., is solely responsible for the administration of the Plan. The Recipient further acknowledges that his or her participation in the Plan, the grant of RSUs and any acquisition of Underlying Shares under the Plan do not constitute an employment relationship between the Recipient and the Company because the Recipient is participating in the Plan on a wholly commercial basis. Based on the foregoing, the Recipient expressly acknowledges that the Plan and the benefits that he or she may derive from participation in the Plan do not establish any rights between the Recipient and the Employer and do not form part of the employment conditions and/or benefits provided by the Employer, and any modification or termination of the Plan, subject to its terms, shall not constitute a change or impairment of the terms and conditions of the Recipient’s employment. The Recipient further understands that his or her participation in the Plan is the result of a unilateral and discretionary decision of the Company and, therefore, the Company reserves the absolute right to amend and/or discontinue the Recipient’s participation in the Plan at any time, without any liability to the Recipient. Finally, the Recipient hereby declares that he or she does not reserve to him- or herself any action or right to bring any claim against the Company for any compensation or damages regarding any provision of the Plan or the benefits derived under the Plan, and that he or she therefore grants a full and broad release to the Company, its parent, subsidiaries, branches, representation offices, stockholders, officers, agents or legal representatives, with respect to any claim that may arise.	Reconocimiento del Convenio de Concesión. Al aceptar las Unidades, el Recipiente reconoce que ha recibido y revisado una copia del Plan y del Convenio , incluyendo el Apéndice A y este Apéndice B. El Recipiente reconoce y acepta todas las disposiciones del Plan y del Convenio de Concesión, incluyendo el Apéndice A y este Apéndice B. El Recipiente también reconoce que ha leído y aprobado de forma expresa los términos y condiciones establecidos en las secciones: “Nature of Grant” del Convenio y del Apéndice A, que claramente establece lo siguiente: (1) La participación del Recipiente en el Plan no constituye un derecho adquirido; (2) El Plan y la participación del Recipiente en él es ofrecido por la Compañía de manera completamente discrecional; (3) La participación del Recipiente en el Plan es voluntaria; y (4) La Compañía y sus Afiliadas no son responsables por ninguna disminución en el valor de las Acciones adquiridas en virtud del Plan. Reconocimiento del Derecho Laboral y Declaración de la Política. Al aceptar las Unidades, el Recipiente reconoce que la Compañía, con domicilio social en 310 Littleton Road, Westford, MA 01886, E.U.A., es la iinica responsable de la administraci6n del Plan. Además, el Recipiente reconoce que su participaci6n en el Plan, la concesi6n de las Unidades y cualquier adquisici6n de Acciones en virtud del Plan no constituyen una relaci6n laboral entre el Recipiente y la Compañía, en virtud de que el Recipiente está participando en el Plan sobre una base totalmente comercial. Por lo anterior, el Recipiente expresamente reconoce que el Plan y los beneficios que puedan derivarse por su participaci6n en el Plan no establecen ningiin derecho entre el Recipiente y el Empleador y que no forman parte de las condiciones de trabajo y/o beneficios otorgados por el Empleador, y cualquier modificaci6n del Plan o la terminaci6n del mismo, sujeto a los términos del Plan, no constituirá un cambio o modificaci6n de los términos y condiciones del empleo del Recipiente. Además, el Recipiente comprende que su participaci6n en el Plan es el resultado de una decisi6n discrecional y unilateral de la Compañía, por lo que la misma se reserva el derecho absoluto de modificar y/o suspender la participaci6n del Recipiente en el Plan en cualquier momento, sin responsabilidad alguna del Recipiente. Finalmente, el Recipiente manifiesta que no se reserva acci6n o derecho alguno que origine una demanda en contra de la Compañía, por cualquier indemnizaci6n o daño relacionado con las disposiciones del Plan o de los beneficios otorgados en el mismo, y en consecuencia el Recipiente libera de la manera más amplia y total de responsabilidad a la Compañía, su Padre y sus Subsidiarias, sucursales, oficinas de representaci6n, accionistas, directores, agentes y representantes legales con respecto a cualquier demanda que pudiera surgir.

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MOROCCO

Terms and Conditions

Issuance of Underlying Shares. The following provision replaces Section 3 of the Agreement:

With respect to any RSUs that become vested RSUs pursuant to Section 2 of the Agreement, subject to Sections 5 and 6 of the Agreement, the Recipient shall receive, on or as soon as practicable following the applicable vesting date specified in the Notice, a cash payment in an amount equal in value to one share of Common Stock (using the closing price per share on the Nasdaq Global Select Market (or other principal exchange on which the Common Stock then trades) on the applicable vesting date (or the prior trading day if the vesting date is not a trading day). Any references to the issuance of shares of Common Stock in any documents related to the RSUs shall be interpreted accordingly.

NEW ZEALAND

Notifications

Securities Law Information. The Recipient is being offered RSUs which will allow the Recipient to acquire Underlying Shares in accordance with the terms of the Agreement and the Plan. The Underlying Shares, if issued, will give the Recipient a stake in the ownership of the Company. The Recipient may receive a return if dividends are paid.

If the Company runs into financial difficulties and is wound up, the Recipient will be paid only after all creditors have been paid. The Recipient may lose some or all of the Recipient’s investment, if any.

New Zealand law normally requires people who offer financial products to give information to investors before they invest. This information is designed to help investors make an informed decisions. The usual rules do not apply for this offer because it is made under an employee share scheme. As a result, the Recipient may not be given all the information usually required. The Recipient will also have fewer other legal protections for this investment. The Recipient should ask questions, read all documents carefully, and seek independent financial advice before committing.

The Common Stock is listed on the Nasdaq Global Select Market (“Nasdaq”). This means that if the Recipient acquires Underlying Shares under the Plan, the Recipient may be able to sell the Underlying Shares on the Nasdaq if there are interested buyers. The Recipient may get less than the Recipient invested. The price will depend on the demand for the Underlying Shares.

For more information on risk factors impacting the Company’s business that may affect the value of the Underlying Shares, the Recipient should refer to the risk factors discussion on the Company’s Annual Report on Form 10-K and Quarterly Reports on Form 10-Q, which are filed with the U.S. Securities and Exchange Commission which are available online at www.sec.gov., as well as on the Company’s “For Investors” website at http://ir.netscout.com/phoenix.zhtml?c=92658&p=irol-irhome.

PHILIPPINES

Terms and Conditions

Issuance of Underlying Shares. The following provision replaces Section 3 of the Agreement:

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SINGAPORE

Notifications

Securities Law Information. The RSUs are being granted pursuant to the “Qualifying Person” exemption under section 273(1)(f) of the Securities and Futures Act (Chapter 289, 2006 Ed.) (“SFA”). The Plan has not been lodged or registered as a prospectus with the Monetary Authority of Singapore. The Recipient should note that the RSUs are subject to section 257 of the SFA and that he or she will not be able to make any subsequent sale of the shares in Singapore or any offers of such subsequent sale of shares subject to the RSUs in Singapore, unless such sale or offer is made (i) more than six months from the grant of the RSUs, (ii) pursuant to the exemptions under Part XIII Division (1) Subdivision (4) (other than section 280) of the SFA, or (iii) pursuant to, and in accordance with the condition of any other applicable provisions of the SFA.

SPAIN

Terms and Conditions

Nature of Grant. The following provision supplements Section 1 of Appendix A:

The RSUs provide for a conditional right to Underlying Shares and may be forfeited or affected by the Recipient’s termination of employment prior to the date the RSUs become fully vested, as set forth in the Agreement. For the avoidance of doubt, the Recipient’s rights, if any, to the RSUs upon termination of employment shall be determined as set forth in the Agreement, including, without limitation, where (a) the Recipient is deemed to be constructively dismissed or unfairly dismissed without good cause; (b) the Recipient is dismissed for disciplinary or objective reasons or due to a collective dismissal; (c) the Recipient terminates employment due to a change of work location, duties or any other employment or contractual condition (except as otherwise expressly set forth in the Agreement); or (d) the Recipient terminates employment due to the Company’s or any of one of its Affiliates’ unilateral breach of contract. Consequently, the termination of the Recipient’s employment for any of the above reasons shall be governed by the terms of the Agreement, unless otherwise determined by the Company, in its sole discretion.

By accepting the RSUs, the Recipient acknowledges that he or she understands and agrees to the terms and conditions applicable to participation in the Plan and that he or she has received a copy of the Plan.

The Recipient understands that the Company has unilaterally, gratuitously and discretionally decided to grant RSUs under the Plan to employees of the Company and its Affiliates throughout the world. The decision is a limited decision that is entered into upon the express assumption and condition that any grant will not economically or otherwise bind the Company or any Affiliate on an ongoing basis, other than as expressly set forth in the Plan and the Agreement. Consequently, the Recipient understands that any grant is given on the assumption and condition that it shall not become part of any employment contract (either with the Company or any Affiliate) and shall not be considered a mandatory benefit, salary for any purposes (including severance compensation) or any other right whatsoever. Furthermore, the Recipient understands and freely accepts that there is no guarantee that any benefit shall arise from an gratuitous and discretionary grant since the RSUs may be forfeited upon termination of employment and the future value of the RSUs and the Underlying Shares is unknown and unpredictable. In addition, the Recipient understands that this grant would not be made but for the assumptions and conditions referred to herein; thus, the Recipient understands, acknowledges and freely accepts that should any or all of the assumptions be mistaken or should any of the conditions not be met for any reason, then the RSUs shall be null and void.

Notifications

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Securities Law Information. The RSUs and the Underlying Shares issued upon vesting do not qualify under Spanish regulations as a security. No “offer of securities to the public” as defined under Spanish law has taken place or will take place in the Spanish territory. The Plan and the Agreement, including Appendix A and this Appendix B, have not been nor will they be registered with the Comisión Nacional del Mercado de Valores (Spanish Securities Exchange Commission), and they do not constitute a public offering prospectus.

TAIWAN

Terms and Conditions

Data Privacy. The following provision supplements Section 2 of Appendix A:

The Recipient hereby acknowledges that he or she has read and understands the terms regarding the collection, processing and transfer of Data contained in Section 2 of Appendix A and, by participating in the Plan, agrees to such terms. In this regard, upon request of the Company or the Employer, the Recipient agrees to provide any executed data privacy consent form (or any other agreements or consents that may be required by the Employer or the Company) should the Company and/or the Employer deem such agreement or consent necessary under applicable data privacy laws, either now or in the future. The Recipient understands that he or she will not be able to participate in the Plan if the Recipient fails to execute any such consent or agreement.

Notifications

Securities Law Information. The grant of RSUs and the Underlying Shares to be issued pursuant to the Plan are available only for certain service providers. It is not a public offer of securities by a Taiwanese company; therefore, it is exempt from registration in Taiwan.

UNITED ARAB EMIRATES

Notifications

Securities Law Information. The award of RSUs is being offered only to eligible employees under the Plan and is in the nature of providing equity incentives to employees in the United Arab Emirates. The Plan and the Agreement are intended for distribution only to such employees and must not be delivered to, or relied on by, any other person. Prospective purchasers of the securities offered should conduct their own due diligence on the securities. The Emirates Securities and Commodities Authority has no responsibility for reviewing or verifying any documents in connection with the Plan. Neither the Ministry of Economy nor the Dubai Department of Economic Development have approved the Plan or the Agreement nor taken steps to verify the information set out therein, and have no responsibility for such documents.

UNITED KINGDOM

Terms and Conditions

Withholding Taxes. The following provision supplements Section 6 of the Agreement:

Without limitation to Section 6 of the Agreement, the Recipient agrees that he or she is liable for all Tax Obligations and hereby covenants to pay all such Tax-Obligations as and when requested by the Company or the Employer or by Her Majesty’s Revenue and Customs (“HMRC”) (or any other tax authority or any other relevant authority). The Recipient also agrees to indemnify and keep indemnified the Company and the Employer against any Tax Obligations

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that they are required to pay or withhold or have paid or will pay to HMRC (or any other tax authority or any other relevant authority) on the Recipient’s behalf.

Notwithstanding the foregoing, if the Recipient is a director or executive officer of the Company (within the meaning of Section 13(k) of the U.S. Securities Exchange Act of 1934, as amended), he or she may not be able to indemnify the Company or the Employer for the amount of any income tax not collected from or paid by the Recipient, as it may be considered a loan. In this case, the amount of any income tax not collected within 90 days of the end of the U.K. tax year in which the event giving rise to the Tax Obligation occurs may constitute an additional benefit to the Recipient on which additional income tax and National Insurance contributions (“NICs”) may be payable. The Recipient understands that he or she will be responsible for reporting and paying any income tax due on this additional benefit directly to HMRC under the self-assessment regime and for paying the Company or the Employer, as applicable, for the value of any NICs due on this additional benefit, which may be recovered from the Recipient by the Company or the Employer by any of the means referred to in Section 6 of the Agreement.

URUGUAY

Terms and Conditions

Data Privacy. The following provision supplements Section 2 of Appendix A:

The Recipient hereby acknowledges that Data will be collected by the Employer and will be transferred to the Company at 310 Littleton Road, Westford, MA 01886, U.S.A. and/or any financial institutions or brokers involved in the management and administration of the Plan. The Recipient further understands that any of these entities may store Data for purposes of administering the Recipient’s participation in the Plan.

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1.	I have reviewed this quarterly report on Form 10-Q of NetScout Systems, Inc.;


2.	Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;


3.	Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;


4.	The registrant’s other certifying officer 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


(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.


(1)	The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and


(2)	The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.