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.

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

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

As of July ~~24, 2020,~~23, 2021, the registrant had ~~83,134,818~~85,528,136 shares of common stock, $0.001 par value per share, ~~issued and~~ outstanding.

This Quarterly Report on Form 10-Q contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. All statements other than statements of historical fact contained in this Quarterly Report on Form 10-Q, including statements regarding our future results of operations and financial position, business strategy and plans and objectives of management for future operations, are forward-looking statements. These statements involve known and unknown risks, uncertainties and other important factors that may cause our actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements.

In some cases, you can identify forward-looking statements by terms such as “may,” “might,” “should,” “expects,” “plans,” “anticipates,” “would,” “could,” “intends,” “target,” “projects,” “contemplates,” “believes,” “estimates,” “predicts,” “potential” or “continue” or the negative of these terms or other similar expressions. The forward-looking statements in this Quarterly Report on Form 10-Q are only predictions. We have based these forward-looking statements largely on our current expectations and projections about future events and financial trends that we believe may affect our business, financial condition and results of operations. These forward-looking statements speak only as of the date of this Quarterly Report on Form 10-Q and are subject to a number of risks, uncertainties and assumptions described in the “Risk Factors” section and elsewhere in this Quarterly Report on Form 10-Q. Because forward-looking statements are inherently subject to risks and uncertainties, some of which cannot be predicted or quantified, you should not rely on these forward-looking statements as predictions of future events. The events and circumstances reflected in our forward-looking statements may not be achieved or occur and actual results could differ materially from those projected in the forward-looking statements. Some of the key factors that could cause actual results to differ from our expectations include:

Except as required by applicable law, we do not plan to publicly update or revise any forward-looking statements contained herein, whether as a result of any new information, future events or otherwise.

	June 30,			December 31,			June 30,			December 31,
	2020			2019			2021			2020
Assets
Current assets:
Cash and cash equivalents	$	149,148		$	113,638		$	168,654		$	157,455
Accounts receivable, net of provision for doubtful accounts of $44 and $20 as of June 30, 2020 and December 31, 2019, respectively		52,867			93,100
Accounts receivable, net of provision for doubtful accounts of $147 and $58 as of June 30, 2021 and December 31, 2020, respectively								65,570			94,124
Inventory		85,965			93,604			95,782			101,204
Prepaid expenses and other current assets		5,772			4,884			7,531			3,864
Prepaid income taxes		10,843			3,217			14,526			14,087
Total current assets		304,595			308,443			352,063			370,734
Property and equipment, net		32,303			35,910			25,471			28,880
Accounts receivable, net of current portion		324			575			65			143
Deferred tax assets		665			69			1,060			1,150
Goodwill		50,347			50,347			50,177			50,177
Intangible assets, net		38,295			41,148			34,171			35,844
Other assets		6,007			7,820			6,196			6,038
Total assets	$	432,536		$	444,312		$	469,203		$	492,966
Liabilities and Stockholders’ Equity
Current liabilities:
Accounts payable	$	26,488		$	25,890		$	26,299		$	41,203
Accrued expenses and other current liabilities		31,324			34,567			29,417			39,793
Accrued income taxes		486			—			3,821			7,463
Deferred revenue		18,061			25,485			20,224			15,531
Current portion of long-term debt, net of unamortized debt issuance costs		8,374			8,524			8,418			15,171
Total current liabilities		84,733			94,466			88,179			119,161
Accrued income taxes, net of current portion		10,887			12,381			9,921			9,520
Deferred tax liabilities		9,166			8,993			7,359			7,282
Deferred revenue, net of current portion		3,546			4,583			5,328			3,520
Long-term debt, net of current portion and unamortized debt issuance costs		283,805			284,756			275,153			276,085
Other liabilities, net of current portion		687			569			1,306			1,024
Total liabilities		392,824			405,748			387,246			416,592
Commitments and contingencies (Note 18)
Commitments and contingencies (Note 17)
Stockholders’ equity:
Preferred stock, $0.001 par value; 5,000 shares authorized as of June 30, 2020 and December 31, 2019; 0 shares issued and outstanding as of June 30, 2020 and December 31, 2019		—			—
Common stock, $0.001 par value; 500,000 shares authorized as of June 30, 2020 and December 31, 2019; 84,856 and 84,333 shares issued and outstanding as of June 30, 2020 and December 31, 2019, respectively		85			84
Treasury stock, at cost; 1,722 and 495 shares at June 30, 2020 and December 31, 2019, respectively		(4,826	)		(1,795	)
Preferred stock, $0.001 par value; 5,000 shares authorized as of June 30, 2021 and December 31, 2020; 0 shares issued and outstanding as of June 30, 2021 and December 31, 2020								—			—
Common stock, $0.001 par value; 500,000 shares authorized; 87,116 and 85,329 shares issued as of June 30, 2021 and December 31, 2020, respectively; 85,394 and 83,607 shares outstanding as of June 30, 2021 and December 31, 2020, respectively								87			85
Treasury stock, at cost; 1,722 shares								(4,826	)		(4,826	)
Additional paid-in capital		175,496			169,561			185,809			183,041
Accumulated other comprehensive loss		(2,113	)		(2,222	)
Accumulated other comprehensive income								594			337
Accumulated deficit		(128,930	)		(127,064	)		(99,707	)		(102,263	)
Total stockholders’ equity		39,712			38,564			81,957			76,374
Total liabilities and stockholders’ equity	$	432,536		$	444,312		$	469,203		$	492,966

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

	Three Months Ended June 30,						Six Months Ended June 30,						Three Months Ended June 30,						Six Months Ended June 30,
	2020			2019			2020			2019			2021			2020			2021			2020
Revenue:
Product	$	72,128		$	42,223		$	145,886		$	68,876		$	80,469		$	72,128		$	174,267		$	145,886
Service		11,222			9,878			21,087			18,711			12,261			11,222			22,740			21,087
Total revenue		83,350			52,101			166,973			87,587			92,730			83,350			197,007			166,973
Cost of revenue:
Product		39,011			10,976			78,655			20,405			46,117			39,011			93,143			78,655
Service		1,209			1,820			2,535			3,380			1,098			1,209			2,309			2,535
Total cost of revenue		40,220			12,796			81,190			23,785			47,215			40,220			95,452			81,190
Gross profit		43,130			39,305			85,783			63,802			45,515			43,130			101,555			85,783
Operating expenses:
Research and development		20,688			18,260			41,899			36,665			20,295			20,688			41,901			41,899
Selling, general and administrative		21,110			17,302			46,101			37,495			21,583			21,110			43,463			46,101
Total operating expenses		41,798			35,562			88,000			74,160			41,878			41,798			85,364			88,000
Income (loss) from operations		1,332			3,743			(2,217	)		(10,358	)		3,637			1,332			16,191			(2,217	)
Other income (expense):
Interest income		271			1,570			677			3,222			103			271			217			677
Interest expense		(4,307	)		(5,225	)		(8,935	)		(10,422	)		(3,999	)		(4,307	)		(7,917	)		(8,935	)
Gain (loss) on foreign currency, net		528			503			680			411
(Loss) gain on foreign currency, net														(231	)		528			(978	)		680
Other income, net		35			142			97			371			479			35			551			97
Total other income (expense), net		(3,473	)		(3,010	)		(7,481	)		(6,418	)		(3,648	)		(3,473	)		(8,127	)		(7,481	)
(Loss) income before provision for (benefit from) income taxes		(2,141	)		733			(9,698	)		(16,776	)		(11	)		(2,141	)		8,064			(9,698	)
Provision for (benefit from) income taxes		887			(558	)		(7,832	)		(2,728	)		3,182			887			5,508			(7,832	)
Net (loss) income		(3,028	)		1,291			(1,866	)		(14,048	)		(3,193	)		(3,028	)		2,556			(1,866	)
Other comprehensive (loss) income—foreign currency translation adjustment, net of tax		99			(646	)		(418	)		67			593			99			257			(418	)
Other comprehensive (loss) income—gain on foreign currency hedge, net of tax		171			—			527			—			—			171			—			527
Comprehensive (loss) income	$	(2,758	)	$	645		$	(1,757	)	$	(13,981	)	$	(2,600	)	$	(2,758	)	$	2,813		$	(1,757	)
Net (loss) income attributable to common stockholders:
Basic and diluted	$	(3,028	)	$	1,291		$	(1,866	)	$	(14,048	)	$	(3,193	)	$	(3,028	)	$	2,556		$	(1,866	)
Net (loss) income per share attributable to common stockholders:
Basic	$	(0.04	)	$	0.02		$	(0.02	)	$	(0.17	)	$	(0.04	)	$	(0.04	)	$	0.03		$	(0.02	)
Diluted	$	(0.04	)	$	0.01		$	(0.02	)	$	(0.17	)	$	(0.04	)	$	(0.04	)	$	0.03		$	(0.02	)
Weighted-average shares used to compute net (loss) income per share attributable to common stockholders:
Basic		83,068			83,884			83,505			83,605			85,036			83,068			84,641			83,505
Diluted		83,068			86,369			83,505			83,605			85,036			83,068			89,013			83,505

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

Common Stock

Treasury Stock

Additional
Paid-in

Accumulated
Other
Comprehensive

Accumulated

Total
Stockholders’

Shares

Amount

Shares

Amount

Capital

Loss

Deficit

Equity

Balances at March 31, 2020

84,726

$
85

1,711

$
(4,793
)

$
171,914

$
(2,383
)

$
(125,902
)

$
38,921

Exercise of stock options and common stock issued upon
vesting of equity awards, net of shares withheld for
employee taxes

130

—

—

—

75

—

—

75

Cash flow hedges

—

—

—

—

—

171

—

171

Foreign currency translation adjustment, net of tax of $0

—

—

—

—

—

99

—

99

Repurchases of treasury shares

—

—

11

(33
)

—

—

—

(33
)
Stock-based compensation

—

—

—

—

3,507

—

—

3,507

Net loss

—

—

—

—

—

—

(3,028
)

(3,028
)
Balances at June 30, 2020

84,856

$
85

1,722

$
(4,826
)

$
175,496

$
(2,113
)

$
(128,930
)

$
39,712

	Common Stock				Treasury Stock					Additional Paid-in			Accumulated Other Comprehensive		Accumulated			Total Stockholders’
	Shares		Amount		Shares		Amount			Capital			Income		Deficit			Equity
Balances at March 31, 2021		86,502	$	86		1,722	$	(4,826	)	$	182,088		$	1	$	(96,514	)	$	80,835
Exercise of stock options and common stock issued upon vesting of equity awards, net of shares withheld for employee taxes		614		1		—		—			(432	)		—		—			(431	)
Foreign currency translation adjustment		—		—		—		—			—			593		—			593
Stock-based compensation		—		—		—		—			4,153			—		—			4,153
Net loss		—		—		—		—			—			—		(3,193	)		(3,193	)
Balances at June 30, 2021		87,116	$	87		1,722	$	(4,826	)	$	185,809		$	594	$	(99,707	)	$	81,957

Common Stock

Treasury Stock

Additional
Paid-in

Accumulated
Other
Comprehensive

Accumulated

Total
Stockholders’

Shares

Amount

Shares

Amount

Capital

Loss

Deficit

Equity

Balances at January 1, 2020

84,333

$
84

495

$
(1,795
)

$
169,561

$
(2,222
)

$
(127,064
)

$
38,564

Exercise of stock options and common stock issued upon vesting of
equity awards, net of shares withheld for employee taxes

523

1

—

—

(73
)

—

—

(72
)
Cash flow hedges

—

—

—

527

527

Foreign currency translation adjustment, net of tax of $0

—

—

—

—

—

(418
)

—

(418
)
Repurchases of treasury shares

—

—

1,227

(3,031
)

—

—

—

(3,031
)
Stock-based compensation

—

—

—

—

6,008

—

—

6,008

Net loss

—

—

—

—

—

—

(1,866
)

(1,866
)
Balances at June 30, 2020

84,856

$
85

1,722

$
(4,826
)

$
175,496

$
(2,113
)

$
(128,930
)

$
39,712

	Common Stock				Treasury Stock					Additional Paid-in			Accumulated Other Comprehensive		Accumulated			Total Stockholders’
	Shares		Amount		Shares		Amount			Capital			Income		Deficit			Equity
Balances at January 1, 2021		85,329	$	85		1,722	$	(4,826	)	$	183,041		$	337	$	(102,263	)	$	76,374
Exercise of stock options and common stock issued upon vesting of equity awards, net of shares withheld for employee taxes		1,787		2		—		—			(4,490	)		—		—			(4,488	)
Foreign currency translation adjustment		—		—		—		—			—			257		—			257
Stock-based compensation		—		—		—		—			7,258			—		—			7,258
Net income		—		—		—		—			—			—		2,556			2,556
Balances at June 30, 2021		87,116	$	87		1,722	$	(4,826	)	$	185,809		$	594	$	(99,707	)	$	81,957

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

Common Stock

Additional
Paid-in

Accumulated
Other
Comprehensive

Accumulated

Total
Stockholders’

Shares

Amount

Capital

Loss

Deficit

Equity

Balances at March 31, 2019

83,734

$
84

$
159,992

$
(445
)

$
(94,197
)

$
65,434

Exercise of stock options and common stock issued upon vesting of
equity awards, net of shares withheld for employee taxes

294

—

670

—

—

670

Foreign currency translation adjustment, net of tax of $0

—

—

—

(646
)

—

(646
)
Stock-based compensation

—

—

2,864

—

—

2,864

Net income

—

—

—

—

1,291

1,291

Balances at June 30, 2019

84,028

$
84

$
163,526

$
(1,091
)

$
(92,906
)

$
69,613

	Common Stock				Treasury Stock					Additional Paid-in		Accumulated Other Comprehensive			Accumulated			Total Stockholders’
	Shares		Amount		Shares		Amount			Capital		Loss			Deficit			Equity
Balances at March 31, 2020		84,726	$	85		1,711	$	(4,793	)	$	171,914	$	(2,383	)	$	(125,902	)	$	38,921
Exercise of stock options and common stock issued upon vesting of equity awards, net of shares withheld for employee taxes		130		—		—		—			75		—			—			75
Cash flow hedges		—		—		—		—			—		171			—			171
Foreign currency translation adjustment		—		—		—		—			—		99			—			99
Repurchases of treasury shares		—		—		11		(33	)		—		—			—			(33	)
Stock-based compensation		—		—		—		—			3,507		—			—			3,507
Net loss		—		—		—		—			—		—			(3,028	)		(3,028	)
Balances at June 30, 2020		84,856	$	85		1,722	$	(4,826	)	$	175,496	$	(2,113	)	$	(128,930	)	$	39,712

	Common Stock				Treasury Stock					Additional Paid-in			Accumulated Other Comprehensive			Accumulated			Total Stockholders’
	Shares		Amount		Shares		Amount			Capital			Loss			Deficit			Equity
Balances at January 1, 2020		84,333	$	84		495	$	(1,795	)	$	169,561		$	(2,222	)	$	(127,064	)	$	38,564
Exercise of stock options and common stock issued upon vesting of equity awards, net of shares withheld for employee taxes		523		1		—		—			(73	)		—			—			(72	)
Cash flow hedges		—		—		—		—			—			527			—			527
Foreign currency translation adjustment		—		—		—		—			—			(418	)		—			(418	)
Repurchases of treasury shares		—		—		1,227		(3,031	)		—			—			—			(3,031	)
Stock-based compensation		—		—		—		—			6,008			—			—			6,008
Net loss		—		—		—		—			—			—			(1,866	)		(1,866	)
Balances at June 30, 2020		84,856	$	85		1,722	$	(4,826	)	$	175,496		$	(2,113	)	$	(128,930	)	$	39,712

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

	Six Months Ended June 30,						Six Months Ended June 30,
	2020			2019			2021			2020
Cash flows provided by (used in) operating activities:
Net loss	$	(1,866	)	$	(14,048	)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Cash flows provided by operating activities:
Net income (loss)							$	2,556		$	(1,866	)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization		9,255			4,885			8,197			9,255
Stock-based compensation		6,016			4,559			7,547			6,016
Deferred income taxes		(420	)		(5,379	)		173			(420	)
Increase in provision for doubtful accounts		23			1,255			89			23
Excess and obsolete inventory		1,118			(1,264	)
Change in provision for excess and obsolete inventory								(6	)		1,118
Gain on disposal of assets		10			—			4			10
Changes in operating assets and liabilities:
Accounts receivable		40,377			24,225			28,433			40,377
Inventory		6,217			(23,075	)		5,372			6,217
Prepaid expenses and other assets		1,419			(1,859	)		(3,792	)		1,419
Prepaid income taxes		(7,624	)		(28	)		(441	)		(7,624	)
Accounts payable		1,331			(7,865	)		(14,456	)		1,331
Accrued expenses and other current liabilities		(2,480	)		(6,387	)		(10,210	)		(2,480	)
Accrued income taxes		(1,016	)		(759	)		(3,240	)		(1,016	)
Deferred revenue		(8,424	)		(5,380	)		6,489			(8,424	)
Net cash provided by (used in) operating activities		43,936			(31,120	)
Net cash provided by operating activities								26,715			43,936
Cash flows used in investing activities:
Purchases of property and equipment		(2,717	)		(3,764	)		(1,514	)		(2,717	)
Purchases of software licenses								(1,400	)		—
Net cash used in investing activities		(2,717	)		(3,764	)		(2,914	)		(2,717	)
Cash flows used in financing activities:
Principal repayments of debt		(1,660	)		(1,656	)		(8,275	)		(1,660	)
Proceeds from exercise of stock options		414			2,168			1,187			414
Employee taxes paid related to net share settlement of equity awards		(487	)		(1,004	)		(5,675	)		(487	)
Payments of dividends and equitable adjustments		(622	)		(2,090	)		(59	)		(622	)
Repurchases of treasury stock		(3,031	)		—			—			(3,031	)
Net cash used in financing activities		(5,386	)		(2,582	)		(12,822	)		(5,386	)
Effect of exchange rate changes on cash and cash equivalents		(340	)		50			214			(340	)
Net increase (decrease) in cash, cash equivalents and restricted cash		35,493			(37,416	)
Net increase in cash, cash equivalents and restricted cash								11,193			35,493
Cash, cash equivalents and restricted cash at beginning of period		114,657			281,606			158,461			114,657
Cash, cash equivalents and restricted cash at end of period ⁽¹⁾	$	150,150		$	244,190		$	169,654		$	150,150
Supplemental disclosures of cash flow information:
Cash paid for interest	$	5,502		$	9,539		$	7,358		$	5,502
Cash paid for income taxes	$	1,889		$	2,857		$	7,564		$	1,889
Supplemental disclosures of non-cash operating, investing and financing activities:
Purchases of property and equipment included in accounts payable	$	564		$	1,626		$	265		$	564
Unpaid equitable adjustments included in accrued expenses and other current liabilities	$	124		$	1,246		$	4		$	124
Release of customer incentives included in accounts receivable and accrued expenses and other current liabilities	$	—		$	5,604
Fair value of cash flow hedges	$	527		$	—		$	—		$	527

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

Casa Systems, Inc. (the “Company”) was incorporated under the laws of the State of Delaware on February 28, 2003. The Company is a global communications technology company headquartered in Andover, Massachusetts and has wholly owned subsidiaries in China, France, Canada, Ireland, Spain, Colombia, the Netherlands, Hong Kong, Australia, Germany, the United Kingdom and New Zealand.

The Company offers ~~converged solutions for next-generation centralized, distributed~~physical, virtual and ~~virtualized architectures for cable broadband, fixed-line~~cloud-native 5G broadband and ~~wireless~~customer premise networking equipment for public and private high-speed data and multi-service communications networks. The Company’s ~~solutions enable customers~~core and edge broadband technology enables communications service providers and enterprises to cost-effectively and dynamically increase data network speed, add bandwidth capacity and new services, ~~for consumers and enterprises,~~ reduce network complexity, and reduce operating and capital expenditures.

The Company is subject to a number of risks similar to other companies of comparable size and other companies selling and providing services to the communications service provider (“CSP”) industry. These risks include, but are not limited to, the level of capital spending by the ~~communications service providers,~~CSPs, a lengthy sales cycle, dependence on the development of new products and services, unfavorable economic and market conditions, ~~risks associated with coronavirus (COVID-19),~~ competition from larger and more established companies, limited management resources, dependence on a limited number of contract manufacturers and suppliers, the rapidly changing nature of the technology used by the ~~communications service providers~~CSPs and reliance on resellers and sales agents. Failure by the Company to anticipate or to respond adequately to technological developments in its industry, changes in customer or supplier requirements, changes in regulatory requirements or industry standards, or any significant delays in the development or introduction of products could have a material adverse effect on the Company’s operating results, financial condition and cash flows.

~~On July 1, 2019, the Company acquired 100% of the equity interests in NetComm Wireless Limited (“NetComm”) for~~ ~~cash consideration of $161,963 Australian dollars (“AUD”) ($112,674 United States dollars (“USD”)), based on an exchange rate of USD $0.700 per AUD $1.00 on July 1, 2019)~~ ~~and NetComm became a wholly-owned subsidiary of the Company~~ ~~(the “Acquisition”)~~. NetComm is a global leader in the development of fixed wireless and distribution point broadband solutions, and with the Acquisition, the Company now offers a broad, highly competitive product portfolio for new 4G and 5G fixed wireless access products and customer premise equipment for vDSL2 and G.fast services for service providers.

The Company is an “emerging growth company,” as defined in the Jumpstart Our Business Startups Act of 2012 (the “JOBS Act”), and may remain an emerging growth company until the last day of the fiscal year following the fifth anniversary of the Company’s initial public offering, subject to specified conditions. The JOBS Act provides that an emerging growth company can take advantage of the extended transition period afforded by the JOBS Act for the implementation of new or revised accounting standards. The Company has elected not to “opt out” of such extended transition period, which means that when a standard is issued or revised, and it has different application dates for public or private companies, the Company ~~will~~is required to adopt the new or revised standard at or prior to the time private companies are required to adopt the new or revised standard, provided that the Company continues to be an emerging growth company. The JOBS Act provides that the decision to take advantage of the extended transition period for complying with new or revised accounting standards is irrevocable.

The accompanying condensed consolidated balance sheet as of June 30, ~~2020,~~2021, the condensed consolidated statements of operations and comprehensive (loss) income for the three and six months ended June 30, ~~2020~~2021 and ~~2019,~~2020, the condensed consolidated statements of cash flows for the six months ended June 30, ~~2020~~2021 and ~~2019~~2020 and the condensed consolidated statements of stockholders’ equity for the three and six months ended June 30, ~~2020~~2021 and ~~2019~~2020 are unaudited. The financial data and other information disclosed in these notes related to the three and six months ended June 30, ~~2020~~2021 and ~~2019~~2020 are also unaudited. The accompanying condensed consolidated balance sheet as of December 31, ~~2019~~2020 was derived from the Company’s audited consolidated financial statements for the year ended December 31, ~~2019~~2020 included in the Company’s Annual Report on Form 10-K filed with the Securities and Exchange Commission (“SEC”) on February ~~27, 2020~~25, 2021 (the “Annual Report on Form 10-K”). The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States (“GAAP”) regarding interim financial reporting. Certain information and note disclosures normally included in the consolidated financial statements prepared in accordance with GAAP have been condensed or omitted. Therefore, these condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes included in the Annual Report on Form 10-K. There have been no ~~material~~ changes to the Company’s accounting policies from those disclosed in the Annual Report on Form 10-K that would have a material impact on the Company’s condensed consolidated financial statements.

The unaudited interim condensed consolidated financial statements have been prepared on a basis consistent with that used to prepare the audited annual consolidated financial statements and, in the opinion of management, include all adjustments, consisting of only normal recurring adjustments, necessary for a fair statement of the financial position, results of operations and cash flows for the interim periods, but are not necessarily indicative of the results of operations and cash flows to be anticipated for the full year ending December 31, ~~2020~~2021 or any future period.

The accompanying condensed consolidated financial statements include the accounts and results of operations of the Company and its ~~wholly owned~~wholly-owned subsidiaries. All intercompany transactions and balances have been eliminated in consolidation.

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting periods.

Significant estimates and judgments relied upon by management in preparing these condensed consolidated financial statements include revenue recognition, provision for doubtful accounts, reserves for excess and obsolete inventory, valuation of inventory and deferred inventory costs, the expensing and capitalization of software-related research and development costs, amortization and depreciation periods, the recoverability of net deferred tax assets, valuations of uncertain tax positions, ~~benefit from income taxes,~~ warranty allowances, the valuation of equity instruments and stock-based compensation expense.

Although the Company regularly reassesses the assumptions underlying these estimates, actual results could differ materially from these estimates. Changes in estimates are recorded in the period in which they become known. The Company bases its estimates on historical experience and various other assumptions that it believes to be reasonable under the circumstances existing at the time such estimates are made.

The ~~emergence of~~ COVID-19 ~~around the world, and particularly in the United States and China,~~pandemic presents various risks to the Company, not all of which the Company is able to fully evaluate or even to foresee at the current time and could have a material effect upon the estimates and judgments relied upon by management in preparing these condensed consolidated financial statements. While the COVID-19 pandemic did not significantly adversely affect the Company’s financial results and business operations in the ~~quarter~~three and six months ended June 30, ~~2020,~~2021, economic and health conditions in the United States and across most of the globe changed rapidly during the period and are continuing to change after the end of the quarter. Globally, all aspects of the Company’s business remain fully operational. ~~However, increasing~~The pandemic has led to increased demand for certain of the Company’s products, ~~has~~resulting in increased order volumes that have created additional pressure on the Company’s supply chain. In addition, certain of the Company’s products utilize components, for which there has been increased global demand. As a result, we have begun to see shortages of supply that have increased the likelihood of an adverse impact on the Company’s future revenue and gross margins and ability to fill orders for customers in a timely manner. The Company continues to work with its supply chain and contract manufacturers, as well as its customers, to ~~which could impact continued availability~~minimize the possible extent of ~~inventory requirements.~~such impacts. However, at this time the Company is neither able to estimate the extent of these impacts nor predict whether its efforts to minimize or contain them will be successful. The Company ~~will~~intends to continue to monitor its business very closely for any effects of COVID-19 for as long as ~~necessary on an ongoing basis.~~necessary.

The Company evaluates events or transactions that occur after the balance sheet date, but prior to the issuance of the financial statements, in order to provide additional evidence for certain estimates or to identify matters that require additional disclosure. The Company has evaluated all subsequent events and determined that there are no material recognized or unrecognized subsequent events requiring disclosure.

Cash and cash equivalents include all highly liquid investments maturing within three months from the date of purchase. As of June 30, ~~2020~~2021 and December 31, ~~2019,~~2020, the Company’s cash and cash equivalents consisted of investments in certificates of deposit and money market mutual funds.

Restricted cash as of June 30, ~~2020~~2021 and December 31, ~~2019~~2020 consisted of a certificate of deposit of ~~$1,002~~$1,000 and ~~$1,019,~~$1,006, respectively, pledged as collateral for a stand-by letter of credit required to support a contractual obligation.

The following table is a reconciliation of cash, cash equivalents and restricted cash included in the accompanying condensed consolidated balance sheets that sum to the total cash, cash equivalents and restricted cash included in the accompanying condensed consolidated statements of cash flows:

	June 30, 2020		June 30, 2019		June 30, 2021		June 30, 2020
Cash and cash equivalents	$	149,148	$	130,510	$	168,654	$	149,148
Restricted cash		—		113,680
Restricted cash included in other assets		1,002		—		1,000		1,002
	$	150,150	$	244,190	$	169,654	$	150,150

Accounts receivable are presented net of a provision for doubtful accounts, which is an estimate of amounts that may not be collectible. Accounts receivable for customer contracts with customary payment terms, which are one year or less, are recorded at invoiced amounts and do not bear interest. The Company may, in limited circumstances, grant payment terms longer than one year. Payments due beyond 12 months from the balance sheet date are recorded as non-current assets. The Company generally does not require collateral, but the Company may, in certain instances based on its credit assessment, require full or partial prepayment prior to shipment.

In limited instances, for certain customers and/or for certain transactions, the Company provides extended payment terms that are considered significant financing components. These extended payment terms allow the customer to pay for the purchased equipment in monthly, other periodic or lump-sum payments over a period of one to five years. In certain circumstances, the receivables may be collateralized by the underlying assets over the payment period. Payments due beyond 12 months from the balance sheet date are recorded as non-current assets.

Accounts receivable as of June 30, ~~2020~~2021 and December 31, ~~2019~~2020 consisted of the following:

	June 30, 2020		December 31, 2019		June 30, 2021		December 31, 2020
Current portion of accounts receivable, net:
Accounts receivable, net	$	52,082	$	91,273	$	65,497	$	93,480
Accounts receivable, extended payment terms		785		1,827		73		644
		52,867		93,100		65,570		94,124
Accounts receivable, net of current portion:
Accounts receivable, extended payment terms		324		575		65		143
	$	53,191	$	93,675	$	65,635	$	94,267

The Company performs ongoing credit evaluations of its customers and, if necessary, provides a provision for doubtful accounts and expected losses. When assessing and recording its provision for doubtful accounts, the Company evaluates the age of its accounts receivable, current economic trends, creditworthiness of the ~~customers,~~customer, customer payment history, and other specific customer and transaction information. The Company writes off accounts receivable against the provision when it determines a balance is uncollectible and no longer actively pursues collection of the receivable. Adjustments to the provision for doubtful accounts are recorded as selling, general and administrative expenses in the condensed consolidated statements of operations and comprehensive (loss) income.

As of June 30, ~~2020~~2021 and December 31, ~~2019,~~2020, the Company concluded that all amounts due under extended payment terms were collectible and no reserve for credit losses was recorded. During the six months ended June 30, ~~2020~~2021 and ~~2019,~~2020, the Company did 0t provide a reserve for credit losses and did 0t write off any uncollectible receivables due under extended payment terms.

Financial instruments that potentially subject the Company to concentrations of credit risk consist principally of cash and cash equivalents and accounts receivable. Cash and cash equivalents consist of demand deposits, savings accounts, money market mutual funds, and certificates of deposit with financial institutions, which may exceed Federal Deposit Insurance Corporation limits. The Company has not experienced any losses related to its cash and cash equivalents and does not believe that it is subject to unusual credit risk beyond the normal credit risk associated with commercial banking relationships.

Significant customers are those that represent 10% or more of revenue or accounts receivable and are set forth in the following tables:

	Revenue						Revenue						Revenue						Revenue
	Three Months Ended June 30,						Six Months Ended June 30,						Three Months Ended June 30,						Six Months Ended June 30,
	2020			2019			2020			2019			2021			2020			2021			2020
Customer A		13	%		18	%	*				21	%		13	%	*				16	%	*
Customer B	*				13	%	*			*			*				22	%	*				21	%
Customer C	*				11	%	*			*				15	%	*				17	%	*
Customer D	*				10	%	*			*			*				13	%	*			*
Customer E	*				12	%	*				11	%		11	%	*			*			*
Customer G		26	%	*				24	%	*

Certain of the components and subassemblies included in the Company’s products are obtained from a single source or a limited group of suppliers. ~~In addition, the Company primarily relies on a limited number of third parties to manufacture certain components of its products.~~ Although the Company seeks to reduce dependence on those limited sources of suppliers and manufacturers, the partial or complete loss of certain of these sources could have a material adverse effect on the Company’s operating results, financial condition and cash flows and damage its customer relationships.

Goodwill represents the excess purchase price over the estimated fair value of net assets acquired as of the acquisition date. Goodwill has been recorded in connection with the acquisition of NetComm on July 1, 2019 (refer to Note 3). The Company tests goodwill for impairment on an annual basis and between annual tests when impairment indicators are identified, and goodwill is written down when impaired. As of June 30, 2020, the Company considered potential impairment indicators of goodwill and noted no indicators of impairment.Stock-Based Compensation

The Company ~~performs its annual goodwill impairment test during its fourth quarter. For its annual goodwill impairment test,~~measures stock options and other stock-based awards granted to employees and directors based on the fair value on the date of the grant and recognizes compensation expense of those awards, net of estimated forfeitures, over the requisite service period, which is generally the vesting period of the respective award. Generally, the Company ~~operates under one reporting unit~~issues stock options with only service-based vesting conditions and records the expense for these awards using the straight-line method.

The Company classifies stock-based compensation expense in its consolidated statements of operations and comprehensive (loss) income in the same manner in which the award recipient’s payroll costs are classified or in which the award recipient’s service payments are classified.

The Company recognizes compensation expense for only the portion of awards that are expected to vest. In developing a forfeiture rate estimate, the Company has considered its historical experience to estimate pre-vesting forfeitures for service-based awards. The impact of a forfeiture rate adjustment will be recognized in full in the period of adjustment, and if the actual forfeiture rate is materially different from the Company’s estimate, the Company may be required to record adjustments to stock-based compensation expense in future periods.

The Company estimates the fair value of each stock option grant on the date of grant using the Black-Scholes option pricing model. The Company was a private company until December 14, 2017 and lacks sufficient company-specific historical and implied volatility information for its ~~reporting unit~~stock. Therefore, for all options granted in 2020 or before, the Company estimated its expected stock volatility based on the historical volatility of publicly traded peer companies. Beginning with options granted in 2021, the Company estimates its expected stock volatility using a weighted-average calculation based on the historical volatility of the Company and publicly traded peer companies and expects to continue to do so until such time as it has adequate historical data regarding the volatility of its own traded stock price. The expected term of the Company’s stock options has been determined utilizing the “simplified” method for awards that qualify as “plain-vanilla” options. The expected term of stock options granted to non-employees is equal to the contractual term of the option award. The risk-free interest rate is determined by reference to the U.S. Treasury yield curve in effect at the time of grant of the award for time periods approximately equal to the expected term of the award. Expected dividend yield is based on the ~~Company’s enterprise value. As part~~fact that the Company does not have a history of declaring or paying cash dividends, except for the special cash dividends declared in November 2014, June 2016, December 2016, May 2017 and November 2017 and in those circumstances the board of directors approved cash dividends to be paid to holders of the ~~annual goodwill impairment test,~~Company’s stock options, stock appreciation rights (“SARs”) and restricted stock units (“RSUs”) upon vesting as an equitable adjustment to the holders of such instruments.

The Company has also granted SARs to certain employees, which require the Company ~~has~~to pay in cash upon exercise an amount equal to the ~~option~~product of the excess of the per share fair market value of the Company’s common stock on the date of exercise over the exercise price, multiplied by the number of shares of common stock with respect to ~~perform~~which the SAR is exercised. Because these awards may require the Company to settle the awards in cash, the Company accounts for them as a qualitative assessment to determine whether further impairment testing is necessary. Examples of events and circumstances that might indicate that the reporting unit’s fair value is less than its carrying amount include macro-economic conditions such as deteriorationliability in the ~~entity’s operating environment~~Company’s consolidated balance sheets. The Company recognizes the liability related to these awards, as well as related compensation expense over the period during which services are rendered until completed. As all SARs are now fully vested, the Company continues to remeasure the fair market value of the liability until the award is either exercised or ~~industry or market considerations; entity-specific events such as increasing costs, declining financial performance, or loss of key personnel; or other events such as a sustained decrease~~canceled, with changes in ~~the stock price on either an absolute basis or relative to peers. If, as a result of its qualitative assessment, it is more likely than not (i.e., greater than 50% chance) that~~ the fair value of the ~~Company’s reporting unit is less than its carrying amount, the quantitative impairment test will be required. Otherwise, no further testing will be required.~~

The Company's intangible assets subject to amortization are amortized using the straight-line method over their estimated useful lives, ranging from three to ten years. The Company evaluates the recoverability of intangible assets periodically by taking into account events or circumstances that may warrant revised estimates of useful lives or that indicate the asset may be impaired. The Company considered potential impairment indicators of acquired intangible assets at June 30, 2020 and noted no indicators of impairment.

The Company has transactions and balances denominated in currencies other than the U.S. dollar. Most of these transactions or balances are denominated in Euros and Australian dollars. The Company has historically entered into foreign exchange contracts to reduce its exposure to currency fluctuations. Historically, these transactions have not qualified for hedge accounting. However, beginning in March 2020, the Company entered into 2 forward contracts, of which 1 is outstanding at June 30, 2020, to hedge against the impact of foreign currency fluctuations on certain forecasted operating expenses. These instruments qualified for hedge accounting as cash flow hedges, and were appropriately designated as such, thus permitting the application of special hedge accounting under ASC 815, ~~Derivatives and Hedging,~~ ~~which states that changes~~liability recorded in the ~~market value~~consolidated statements of ~~the hedging instrument are accounted for within stockholder’s equity as accumulated other~~operations and comprehensive loss, until such time as the hedged cash flows take place. Upon utilization of the hedge instrument for the designated cash flows, the appropriate amounts are reclassified from accumulated other comprehensive loss to the relevant line items within the Statement of Operations for the period. For further information, please refer to Note 9, “Derivative Instruments”.(loss) income.

In ~~June 2018,~~August 2020, the FASB issued ASU ~~2018-07,~~2020-06, ~~Compensation~~Debt – ~~Stock Compensation (Topic 718)~~Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging – Contracts in Entity’s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity ~~(“ASU 2018-07”), which expands~~. This guidance simplifies the guidance on certain financial instruments with characteristics of liability and equity, including convertible debt instruments. As a result, entities will not separately present in equity an embedded conversion feature in such debt and will account for a convertible debt instrument wholly as debt, unless certain other conditions are met. The elimination of these models will reduce reported interest expense and increase reported net income for entities that have issued a convertible instrument that is within the scope of ~~Topic 718 to include share-based payment transactions~~ASU 2020-06. The ASU also simplifies the diluted earnings per share calculation in certain areas. The guidance will become effective for ~~acquiring goods and services from nonemployees.~~fiscal years beginning after December 15, 2021, with early adoption permitted no earlier than fiscal years beginning after December 15, 2020. The Company ~~adopted~~has elected to early adopt this ASU ~~2018-07 as of January 1, 2020~~ and itthe adoption did not have a material ~~effect~~impact on ~~its~~the Company’s condensed consolidated financial ~~statements.~~statements and the accompanying notes thereto.

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842): Amendments to FASB Accounting Standards Codification (“ASU 2016-02”), which replaces the existing guidance for leases. ASU 2016-02 ~~which will require~~requires the identification of arrangements that should be accounted for as leases by lessees. In general, for lease arrangements exceeding a twelve-month term, the arrangements must now be recognized as assets and liabilities on the balance sheet of the lessee. Under ASU 2016-02, a right-of-use asset and lease obligation will be recorded for all leases, whether operating or financing, while the income statement will reflect lease expense for operating leases and amortization/interest expense for financing leases. The balance sheet amount recorded for existing leases at the date of adoption of ASU 2016-02 must be calculated using the applicable incremental borrowing rate at the date of adoption. This guidance will become effective for private companies, and emerging growth companies that choose to take advantage of the extended transition periods, for annual reporting periods beginning after December 15, ~~2020,~~2021, and interim periods within fiscal years beginning after December 15, ~~2021.~~2022. The Company ~~expects to adopt ASU 2016-02 on January 1, 2021 and~~ has begun planning for adoption by implementing a new lease accounting software and by working to establish additional changes to internal processes to comply with all requirements upon adoption. The standard allows for, and the Company plans on using, a modified retrospective approach with comparatives under ASC 840, where entities would recognize a cumulative effect to retained earnings at the date of adoption without restating prior period balances or disclosure. Management is ~~currently assessing~~continuing to assess the ~~potential~~ impact ~~that~~of ASU 2016-02 on the ~~adoption will have on its~~Company’s condensed consolidated financial ~~statements.~~statements and the accompanying notes thereto.

In June 2016, the FASB issued ASU 2016-13, Measurement of Credit Losses on Financial Instruments (“ASU 2016-13”). This guidance is intended to provide more decision-useful information about expected credit losses on financial instruments and other commitments to extend credit held by a reporting entity at each reporting date. The main provisions include presenting financial assets measured at amortized cost at the amount expected to be collected, which is net of an allowance for expected credit losses, and recording credit losses related to available-for-sale securities through an allowance for credit losses. The effective dates for the amendments in ASU 2016-13 were updated in ASU 2019-10, Financial Instruments – Credit Losses (Topic 326), Derivatives and Hedging (Topic 815), and Leases (Topic 842), and as such ASU 2016-13 will become effective for private companies, and emerging growth companies that choose to take advantage of the extended transition periods, for fiscal years beginning after December 15, 2022, including interim periods within those fiscal periods, and must be applied using a modified retrospective approach. The Company is currently evaluating the impact ASU 2016-13 will have on its consolidated financial statements.

Other than the disclosures above, there have been no changes to the significant accounting policies disclosed in Note 2 “Summary of Significant Accounting Policies” to the Company’s consolidated financial statements included in the Annual Report on Form 10-K for the fiscal year ended December 31, ~~2019.~~2020.

~~On July 1, 2019, the Company acquired 100% of the equity interests in NetComm for~~ ~~cash consideration of $161,963 AUD ($112,674 USD, based on an exchange rate of USD $0.700 per AUD $1.00 on July 1, 2019)~~ and NetComm became a wholly-owned subsidiary of the Company. The Acquisition was accounted for under the acquisition method. The total purchase price is allocated to the tangible and intangible assets acquired and the liabilities assumed based on their estimated fair values. The excess of the purchase price over those fair values is recorded as goodwill. The fair value assigned to the tangible and intangible assets acquired and liabilities assumed are based on estimates and assumptions provided by management. Goodwill is not amortized but instead is tested for impairment at least annually.

NetComm is a global leader in the development of fixed wireless and distribution point broadband solutions. With the Acquisition, the Company now offers a broad, highly competitive product portfolio for new 4G and 5G fixed wireless access products and customer premise equipment for vDSL2 and G.fast services for service providers. This factor contributed to a purchase price in excess of fair value of NetComm’s net tangible and intangible assets, leading to the recognition of goodwill.

The total purchase price was allocated to NetComm’s net tangible and intangible assets based upon their estimated fair values as of the date of Acquisition. NetComm’s cash and cash equivalents balance at the Acquisition date was $3,243; as such, total consideration net of cash acquired is $109,431. NetComm’s existing debt of approximately $3,507 as of the Acquisition date has been accounted for as an assumed liability. All contractual amounts receivable as of July 1, 2019, which totaled $~~18,142, have been collected as of June 30, 2020. Based upon the purchase price and the valuation, the allocation of the total purchase price is as follows:~~

~~The allocation of the purchase price and the estimated useful lives associated with certain assets is as follows~~:

Intangible assets of $44,000 have been allocated to identifiable intangible assets consisting of developed technology, amortized over seven years using a straight-line amortization method; customer relationships, amortized over ten years using a straight-line amortization method; and a trade name, amortized over three years using a straight-line amortization method. The weighted average life of the identifiable intangible assets recognized from the Acquisition was 8.2 years.

The Acquisition accounting has resulted in goodwill of $50,347. Various factors contributed to the establishment of the goodwill, including: the strategic benefit of expanding the breadth of the Company’s product offerings; the value of NetComm’s highly trained work force; the expected revenue growth over time that is attributable to increased market penetration from future products and customers, and cross-selling by the sales force; and the synergies expected to result from reducing redundant infrastructure such as corporate costs and field operations. The goodwill acquired in the Acquisition is not deductible for tax purposes.

Intangible assets, net consisted of the following at June 30, ~~2020~~2021 and December 31, ~~2019:~~2020:

	Cost		Accumulated Amortization			Net Balance		Cost		Accumulated Amortization			Net Balance
Developed Technology	$	25,000	$	(3,572	)	$	21,428	$	25,000	$	(7,144	)	$	17,856
Customer Relationships		18,000		(1,800	)		16,200		18,000		(3,600	)		14,400
Trade Name		1,000		(333	)		667		1,000		(664	)		336
Totals as of June 30, 2020	$	44,000	$	(5,705	)	$	38,295
Purchased software									1,796		(217	)		1,579
Totals as of June 30, 2021								$	45,796	$	(11,625	)	$	34,171

	Cost		Accumulated Amortization			Net Balance		Cost		Accumulated Amortization			Net Balance
Developed Technology	$	25,000	$	(1,786	)	$	23,214	$	25,000	$	(5,358	)	$	19,642
Customer Relationships		18,000		(900	)		17,100		18,000		(2,700	)		15,300
Trade Name		1,000		(166	)		834		1,000		(498	)		502
Totals as of December 31, 2019	$	44,000	$	(2,852	)	$	41,148
Purchased software									432		(32	)		400
Totals as of December 31, 2020								$	44,432	$	(8,588	)	$	35,844

As of June 30, ~~2020,~~2021, amortization expense on existing intangible assets for the next five years and beyond is as follows:

Year Ending December 31,
2020	$	2,853
2021		5,704	$	3,060
2022		5,538		5,951
2023		5,371		5,753
2024		5,371		5,651
2025				5,651
Thereafter		13,458		8,105
	$	38,295	$	34,171

~~The Company recorded~~A summary of amortization expense of $893 and $533 related to intangible assets, which were included in product cost of revenue and selling, general and administrative expense, respectively, for the three months ended June 30, 2020 in the condensed consolidated statements of operations and comprehensive (loss) income. The Company recorded amortization expense of $1,786 and $1,067 related to intangible assets, which were included in product cost of revenue and selling, general and administrative expense, respectively, for the six months ended June 30, 2020 in the condensed consolidated statements of operations and comprehensive (loss) income. The Company recorded 0 amortization expense related to intangible assets forduring the three and six months ended June 30, ~~2019.~~2021 and 2020 is as follows:

5.The Company’s goodwill is the result of its acquisition of NetComm on July 1, 2019 and represents the excess of purchase price over the estimated fair value of net assets acquired. There has been no change to the $50,177 carrying amount of goodwill since December 31, 2020.

Inventory as of June 30, ~~2020~~2021 and December 31, ~~2019~~2020 consisted of the following:

	June 30, 2020		December 31, 2019		June 30, 2021		December 31, 2020
Raw materials	$	32,233	$	19,821	$	43,597	$	50,904
Work in process		1		17		1		19
Finished goods:
Manufactured finished goods		53,492		69,503		51,243		49,764
Deferred inventory costs		239		4,263		941		517
	$	85,965	$	93,604	$	95,782	$	101,204

Property and equipment as of June 30, ~~2020~~2021 and December 31, ~~2019~~2020 consisted of the following:

	June 30, 2020			December 31, 2019			June 30, 2021			December 31, 2020
Computers and purchased software	$	22,672		$	22,294		$	24,878		$	24,865
Leasehold improvements		4,414			4,380			4,182			4,148
Furniture and fixtures		2,969			2,794			2,660			2,644
Machinery and equipment		40,451			40,002			37,161			36,701
Land		3,091			3,091			3,091			3,091
Building		4,765			4,765			4,765			4,765
Building improvements		7,232			6,776			7,255			7,244
Trial systems at customers’ sites		6,279			6,039			4,383			5,300
		91,873			90,141			88,375			88,758
Less: Accumulated depreciation and amortization		(59,570	)		(54,231	)		(62,904	)		(59,878	)
	$	32,303		$	35,910		$	25,471		$	28,880

During the six months ended June 30, ~~2020~~2021 and ~~2019,~~2020, the Company transferred trial systems into inventory from property and equipment with values of ~~$574~~$918 and ~~$352,~~$574, respectively, net of transfers of trial systems to cost of revenue. In addition, the Company transferred ~~$328~~$17 and ~~$322~~$328 of equipment tointo inventory from property and equipment during the six months ended June 30, ~~2020~~2021 and ~~2019,~~2020, respectively.

Depreciation and amortization expense on property and equipment totaled ~~$3,055~~$2,459 and ~~$2,489~~$3,055 for the three months ended June 30, ~~2020~~2021 and ~~2019,~~2020, respectively and ~~$6,402~~$5,160 and ~~$4,885~~$6,402 for the six months ended June 30, ~~2020~~2021 and ~~2019,~~2020, respectively.

Accrued expenses and other current liabilities as of June 30, ~~2020~~2021 and December 31, ~~2019~~2020 consisted of the following:

	June 30, 2020		December 31, 2019		June 30, 2021		December 31, 2020
Accrued compensation and related taxes	$	15,464	$	18,540	$	15,505	$	22,785
Accrued warranty		2,112		2,448		2,597		2,354
Dividends and equitable adjustments payable (see Note 12)		124		750
Accrued customer incentives		—		233
Other accrued expenses		13,624		12,596		11,315		14,654
	$	31,324	$	34,567	$	29,417	$	39,793

Substantially all of the Company’s products are covered by warranties for software and hardware for periods ranging from 90 days to one year. In addition, in conjunction with customers’ renewals of maintenance and support contracts, the Company offers an extended warranty for periods typically of one to three years for agreed-upon fees. In the event of a failure of a hardware product or software covered by these warranties, the Company must repair or replace the software or hardware or, if those remedies are insufficient, and at the discretion of the Company, provide a refund. The Company’s warranty reserve, which is included in accrued expenses and other current liabilities in the condensed consolidated balance sheets, reflects estimated material, labor and other costs related to potential or actual software and hardware warranty claims for which the Company expects to incur an obligation. The Company’s estimates of anticipated rates of warranty claims and the costs associated therewith are primarily based on historical information and future forecasts. The Company periodically assesses the adequacy of the warranty reserve and adjusts the amount as necessary. If the historical data used to calculate the adequacy of the warranty reserve are not indicative of future requirements, additional or reduced warranty reserves may be required.

A summary of changes in the amount reserved for warranty costs for the six months ended June 30, ~~2020~~2021 and ~~2019~~2020 is as follows:

	Six Months Ended June 30,						Six Months Ended June 30,
	2020			2019			2021			2020
Warranty reserve at beginning of period	$	2,448		$	926		$	2,354		$	2,448
Provisions		993			1,345			1,566			993
Charges		(1,329	)		(1,535	)		(1,323	)		(1,329	)
Warranty reserve at end of period	$	2,112		$	736		$	2,597		$	2,112

Certain assets and liabilities are carried at fair value under GAAP. Fair value is defined as the price that would be received for an asset or the exit price that would be paid to transfer a liability in the principal or most advantageous market in an orderly transaction between market participants on the measurement date. Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs. Financial assets and liabilities carried at fair value are to be classified and disclosed in one of the following three levels of the fair value hierarchy, of which the first two are considered observable and the last is considered unobservable:

The following tables present information about the fair value of the Company’s financial assets and liabilities as of June 30, ~~2020~~2021 and December 31, ~~2019~~2020 and indicate the level of the fair value hierarchy utilized to determine such fair values:

	Fair Value Measurements as of June 30, 2020 Using:								Fair Value Measurements as of June 30, 2021 Using:
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Assets:
Certificates of deposit	$	—	$	17,770	$	—	$	17,770
Certificates of deposit—restricted cash		—		1,002		—		1,002	$	—	$	1,000	$	—	$	1,000
Money market mutual funds		51,760		—		—		51,760		135,021		—		—		135,021
Foreign currency forward contracts		—		527		—		527		—		8		—		8
	$	51,760	$	19,299	$	—	$	71,059	$	135,021	$	1,008	$	—	$	136,029
Liabilities:
SARs	$	—	$	—	$	271	$	271	$	—	$	—	$	646	$	646
	$	—	$	—	$	271	$	271	$	—	$	—	$	646	$	646

	Fair Value Measurements as of December 31, 2019 Using:								Fair Value Measurements as of December 31, 2020 Using:
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Assets:
Certificates of deposit	$	—	$	10,933	$	—	$	10,933
Certificates of deposit—restricted cash		—		1,019		—		1,019	$	—	$	1,006	$	—	$	1,006
Money market mutual funds		53,763		—		—		53,763		114,404		—		—		114,404
Foreign currency forward contracts		—		23		—		23
	$	53,763	$	11,975	$	—	$	65,738	$	114,404	$	1,006	$	—	$	115,410
Liabilities:
SARs	$	—	$	—	$	264	$	264	$	—	$	—	$	493	$	493
Foreign currency forward contracts		—		50		—		50
	$	—	$	50	$	264	$	314	$	—	$	—	$	493	$	493

During the six months ended June 30, ~~2020~~2021 and ~~2019,~~2020, there were0 transfers between Level 1, Level 2 and Level 3.

There were no changes to the valuation techniques used to measure asset and liability fair values on a recurring basis during the six months ended June 30, ~~2020~~2021 from those included in the Company’s consolidated financial statements for the year ended December 31, ~~2019.~~2020. The following table provides a summary of changes in the fair values of the Company’s stock appreciation rights (“SARs”) liability, for which fair value is determined by Level 3 inputs:

	Six Months Ended June 30,					Six Months Ended June 30,
	2020		2019			2021			2020
Fair value at beginning of period	$	264	$	1,387		$	493		$	264
Change in fair value		7		(866	)		288			7
Exercises		—		—			(135	)		—
Fair value at end of period	$	271	$	521		$	646		$	271

The Company has certain international customers that are billed in foreign currencies. To mitigate the volatility related to fluctuations in the foreign exchange rates for accounts receivable denominated in foreign currencies, the Company enters into foreign currency forward contracts. As of June 30, 2021, the Company had a foreign currency forward contract outstanding with a notional amount totaling 1,129 Euros maturing in the third quarter of 2021. As of December 31, 2020,0 foreign currency forward contracts were outstanding. As of December 31, 2019, the Company had foreign currency forward contracts outstanding with notional amounts totaling 500 Euros and 900 USD related to the Company’s Australian subsidiary which matured during the first quarter of 2020.

The Company’s foreign currency forward contracts described above economically hedged certain risks but were not designated as hedges for financial reporting purposes, and accordingly, all changes in the fair value of the derivative instruments were recorded as unrealized foreign currency transaction gains or losses and were included in the condensed consolidated statements of operations and comprehensive (loss) income as a component of other income (expense). The Company records derivative instruments in the condensed consolidated balance sheet at their fair values. As of June 30, 2021, the Company recorded an asset of $8relating to outstanding foreign currency forward contracts. As of December 31, 2020 the Company recorded 0 asset relating to outstanding foreign currency forward ~~contracts and as of December 31, 2019, had recorded an asset of $23 which was included in prepaid expenses and other current assets in the condensed consolidated balance sheets.~~contracts. As of June 30, 2021 and December 31, 2020, the Company recorded 0 liability relating to outstanding foreign currency forward contracts and as of December 31, 2019, had recorded a liability of $50, related to outstanding foreign currency forward contracts, which was included in accrued expenses and other current liabilities in the condensed consolidated balance sheets.contracts.

The Company also faces exposure to foreign currency exchange rate fluctuations, as a certain portion of its expenses are denominated in currencies other than U.S. ~~Dollars.~~dollars. In certain instances, ~~we utilize~~the Company utilizes forward contracts to hedge against foreign currency fluctuations. These contracts are used to minimize foreign gains or losses, as the gains or losses on the derivative are intended to offset the losses or gains on the underlying exposure. ~~We do~~The Company does not engage in foreign currency speculation.

The ~~Company’s~~Company designed its foreign currency risk management strategy is principally ~~designed~~ to mitigate the potential financial impact of changes in the value of transactions and balances denominated in foreign currencies resulting from changes in foreign currency exchange rates. The Company may enter into cash flow hedges ~~which~~that utilize foreign currency forward contracts to hedge specific forecasted transactions of ~~the Company's~~its foreign subsidiaries with the goal of protecting ~~our~~its budgeted expenses against foreign currency exchange rate changes compared to ~~our~~its budgeted rates.

During the ~~three and~~ six months ended June 30, 2020, the Company ~~settled one~~entered into a cash flow hedge with a notional amount of 8,500 AUD to hedge certain Australian ~~Dollar~~dollar cash flows incurred during the ~~period. The amount~~second quarter of 2020. During the three months ended June 30, 2020, the Company settled this cash flow hedge, reclassifying a gain ~~reclassified~~ from other comprehensive (loss) income ~~for the three and six months ended June 30, 2020 was~~of $225. The full amount of the fair value of ~~the~~this derivative on the settlement date of $888 ~~has been~~was recognized ~~proportionately~~ as $67 cost of goods sold, $537 research and development expense and $284 selling, general and administrative expense in the condensed consolidated statement of comprehensive (loss) income.

~~As of~~At June 30, 2020, the Company had one outstanding cash flow hedge with a notional amount of 5,000 AUD to hedge certain Australian ~~Dollar~~dollar cash flows incurred during the third quarter of 2020. This contract matures in the third quarter of 2020. Accordingly, as of June 30, 2020, the company recorded an asset for the fair value of the hedges of $527, which is included in prepaid expenses and other current assets in the accompanying condensed consolidated balance sheets. As the cash flows ~~being~~which were hedged had 0tnot yet occurred, the ~~full amount of~~Company recognized the change in fair value ~~at June 30, 2020 has been recognized as~~

~~accumulated other comprehensive loss in the condensed consolidated balance sheets as~~ of ~~June 30, 2020. The Company did 0t have any cash flow hedges as of December 31, 2019.~~

~~The Company’s effective income tax rate was (41.4)% and (76.1)%~~$396 for the three months ended June 30, 2020 and ~~2019, respectively, and was 80.8% and 16.3%~~the full fair value of $527 for the six months ended June 30, 2020 as accumulated other comprehensive income in the accompanying condensed consolidated statement of stockholders’ equity. The Company did not have any cash flow hedges outstanding as of June 30, 2021 and ~~2019,~~December 31, 2020.

The Company’s provision for (benefit from) income taxes was $3,182 and $887 for the three months ended June 30, 2021 and 2020, respectively. The change in the provision for (benefit from) income taxes was primarily due to changes in the jurisdictional mix of earnings period over period.

The Company’s effective income tax rate was 68.3% and 80.8% for the six months ended June 30, 2021 and 2020, respectively. The provision for (benefit from) income taxes was ~~$887~~$5,508 and ~~$(558) for the three months ended June 30, 2020 and 2019, respectively, and was~~ $(7,832) ~~and $(2,728)~~ for the six months ended June 30, 2021 and 2020, ~~and 2019,~~ respectively.

The Company determines its estimated annual effective tax rate at the end of each interim period based on estimated pre-tax (loss) income and facts known at that time. The estimated annual effective tax rate is applied to the year-to-date pre-tax (loss) income at the end of each interim period with certain adjustments. The tax effects of significant unusual or extraordinary items are reflected as discrete adjustmentschange in the ~~periods in which they occur. The Company’s estimated annual effective~~provision for (benefit from) income taxes was primarily due to a discrete tax ~~rate can change based on~~benefit of $9,310 recorded during the mix of jurisdictional pre-tax (loss) income and other factors. However, if the Company is unable to make a reliable estimate of its annual effective tax rate, then the actual effective tax rate for the year to date period may be the best estimate. For the three and six months ended June 30, ~~2020,~~2021 associated with the Company determined that its annual effective tax rate approach would provide for a reliable estimate and therefore used this method to calculate its tax provision. Due to deferred tax assets requiring a full valuation allowanceenactment of the CARES Act. The change in the ~~United States,~~provision for (benefit from) income taxes was also impacted by changes in the ~~Company determined that the best estimate would be to use separate annual effective tax rates for the United States and the rest~~jurisdictional mix of ~~the world.~~earnings period over period.

The ~~effective~~provision for (benefit from) income ~~tax rate~~taxes for the three and six months ended June 30, ~~2020~~2021 and ~~2019~~2020 differed from the federal statutory rate primarily due to the ~~benefit related to the carryback of losses in the United States as well as~~ geographical mix of earnings and related foreign tax rate differential, permanent differences, research and development tax credits, foreign tax credits, the valuation allowance and withholding taxes. Permanent differences primarily included global intangible low-taxed income, Australian research and development expenditures claim and excess tax benefit from stock-based transactions.

On March 27, 2020, the Coronavirus Aid, Relief and Economic Security (“CARES”) Act was enacted and signed into law. Accordingly, applicable provisions of the CARES Act were reflected in the tax provision for the quarter ended March 31, 2020. The CARES Act, among other provisions, permits net operating losses (“NOL”) incurred in the years ended December 31, 2020, 2019 and 2018 to be carried back to reduce 100% of taxable income in the five preceding taxable years. The Company continues to evaluate certain aspects of these provisions but has determined that its NOL incurred in 2019 may be carried back to 2014, and accordingly recognized a benefit of approximately $9,310 in the three months ended March 31, 2020, which was included in prepaid income taxes in the condensed consolidated balance sheet as of March 31, 2020. Of this amount, approximately $7,627 related to release of valuation allowances due to the conversion ofmaintained against certain deferred tax assets ~~to NOLs available for carryback.~~

The change in the provision for (benefit from) income taxes for the six months ended June 30, 2020 compared to the six months ended June 30, 2019 was primarily due to the pre-tax net loss coupled with the recognition of the benefit from the CARES Act as well as the full valuation allowance against the deferred tax assets in the United States. The change to the income tax provision for the three months ended June 30, 2020 compared to the income tax benefit for the three months ended June 30, 2019 is primarily due to geographical mix of profits as well as a full valuation allowance against the deferred tax assets in the United States. and withholding taxes.

The aggregate principal amount of debt outstanding as of June 30, ~~2020~~2021 and December 31, ~~2019~~2020 consisted of the following:

Current and non-current debt obligations reflected in the condensed consolidated balance sheets as of June 30, ~~2020~~2021 and December 31, ~~2019~~2020 consisted of the following:

	June 30,			December 31,			June 30,			December 31,
	2020			2019			2021			2020
Current liabilities:
Term loans	$	3,000		$	3,000
Mortgage loan		6,483			6,644
Term loan							$	3,000		$	9,775
Revolving credit facility								6,500			6,500
Current portion of principal payment obligations		9,483			9,644			9,500			16,275
Unamortized debt issuance costs, current portion		(1,109	)		(1,120	)		(1,082	)		(1,104	)
Current portion of long-term debt, net of unamortized debt issuance costs	$	8,374		$	8,524		$	8,418		$	15,171
Non-current liabilities:
Term loans	$	286,500		$	288,000
Non-current portion of principal payment obligations		286,500			288,000
Term loan							$	276,725		$	278,225
Unamortized debt issuance costs, non-current portion		(2,695	)		(3,244	)		(1,572	)		(2,140	)
Long-term debt, net of current portion and unamortized debt issuance costs	$	283,805		$	284,756		$	275,153		$	276,085

As of June 30, 2021, aggregate minimum future principal payments of the Company’s debt are summarized as follows:

On December 20, 2016, the Company entered into a credit agreement with JPMorgan Chase Bank, N.A., as administrative agent, various lenders and JPMorgan Chase Bank, N.A. and Barclays Bank PLC providing for (i) a term loan facility of $300,000 and (ii) a revolving credit facility of up to $25,000 in revolving credit loans and letters of credit.

As of June 30, ~~2020~~2021 and December 31, ~~2019, $289,500~~2020, $279,725 and ~~$291,000~~$288,000 in principal amount, respectively, ~~was~~were outstanding under the term loan facility (the “Term Loans”). As of June 30, 2021 and December 31, 2020, the Company ~~did 0t have any~~had outstanding borrowings under the revolving credit ~~facility; however, as~~facility of $6,500. As of June 30, ~~2020~~2021 and December 31, ~~2019,~~2020, the Company had also used ~~$1,324~~$1,503 and ~~$1,343~~$1,454 of ~~availability~~available credit under the revolving credit facility for two stand-by letters of credit, one which serves as collateral to one of the Company’s customers pursuant to a contractual performance guarantee and one which serves as collateral for operating leases in Australia. In addition, the Company may, subject to certain conditions, including the consent of the administrative agent and the institutions providing such increases, increase the facilities by an unlimited amount so long as the Company is in compliance with specified leverage ratios, or otherwise by up to $70,000.

Borrowings under the facilities bear interest at a floating rate, which can be either a Eurodollar rate plus an applicable margin or, at the Company’s option, a base rate (defined as the highest of (x) the JPMorgan Chase, N.A. prime rate, (y) the federal funds effective rate, plus one-half percent (0.50%) per annum and (z) a one-month Eurodollar rate plus 1.00% per annum) plus an applicable margin. The applicable margin for borrowings under the term loan facility is 4.00% per annum for Eurodollar rate loans (subject to a 1.00% per annum interest rate floor) and 3.00% per annum for base rate loans. ~~As a result of the completion of the Company’s IPO in December 2017, the~~The applicable margin for borrowings under the revolving credit facility is 1.75% per annum for Eurodollar rate loans and 0.75% per annum for base rate loans, subject to reduction based on the Company’s maintaining of specified net leverage ratios. The interest rates payable under the facilities are subject to an increase of 2.00% per annum during the continuance of any payment default.

For Eurodollar rate loans, the Company may select interest periods of one, three or six months or, with the consent of all relevant affected lenders, twelve months. Interest will be payable at the end of the selected interest period, but no less frequently than every three months within the selected interest period. Interest on any base rate loan is not set for any specified period and is payable quarterly. The Company has the right to convert Eurodollar rate loans into base rate loans and the right to convert base rate loans into Eurodollar rate loans at its option, subject, in the case of Eurodollar rate loans, to breakage costs if the conversion is effected prior to the end of the applicable interest period. As of June 30, 2021 and December 31, 2020, the interest rate on the Term Loans was 5.00% per annum, which was based on a three-month and six-month Eurodollar rate, respectively, at the applicable floor of 1.00% per annum plus the applicable margin of 4.00% per annum for Eurodollar rate loans. As of ~~December 31, 2019,~~June 30, 2021, the interest rate on the ~~Term Loans~~revolving credit facility was ~~5.80%~~2.01% per annum, which was based on a ~~one-month~~six-month Eurodollar rate of ~~1.80%~~0.26% per annum plus the applicable margin of ~~4.00%~~1.75% per annum for Eurodollar rate loans. As of December 31, 2020, the interest rate on the revolving credit facility was 2.12% per annum, which was based on the six-month Eurodollar rate of 0.37% per annum plus the applicable margin of 1.75% per annum for Eurodollar rate loans.

Upon entering into the term loan facility, the Company incurred debt issuance costs of $7,811, which were initially recorded as a reduction of the debt liability and are amortized to interest expense using the effective interest method from the issuance date of the Term Loan until the maturity date. Principal payments of $7,525 and $750 were made ~~under the term loan facility~~ during ~~each of~~ the three months ended June 30, 2021 and 2020, ~~and 2019,~~respectively, and principal payments of $8,275 and $1,500 were made ~~under the term loan facility~~ during ~~each of~~ the six months ended June 30, 2021 and 2020, respectively, under the term loan facility. No principal payments were made under the revolving credit facility during the three and ~~2019.~~six months ended June 30, 2021. Interest expense for the Term Loan and revolving credit facility, including the amortization of debt issuance costs, totaled ~~$4,026~~$3,933 and ~~$5,070~~$4,026 for the three months ended June 30, ~~2020~~2021 and ~~2019,~~2020, respectively and totaled ~~$8,474~~$7,802 and ~~$10,079~~$8,474 for the six months ended June 30, ~~2020~~2021 and ~~2019,~~2020, respectively.

The revolving credit facility also requires payment of quarterly commitment fees at a rate of 0.25% per annum on the difference between committed amounts and amounts actually borrowed under the facility and customary letter of credit fees. For the three months ended June 30, ~~2020~~2021 and ~~2019,~~2020, interest expense related to the fee for the unused amount of the revolving credit facility totaled ~~$15~~$11 and ~~$16,~~$15, respectively and for the six months ended June 30, ~~2020~~2021 and ~~2019,~~2020, interest expense related to the fee for the unused amount of the revolving credit facility totaled ~~$30~~$22 and ~~$32,~~$30, respectively.

The Term Loans mature on December 20, 2023, and the revolving credit facility matures on December 20, 2021. The Term Loans are subject to amortization in equal quarterly installments, which commenced on March 31, 2017, of principal in an annual aggregate amount equal to 1.0% of the original principal amount of the Term Loans of $300,000, with the remaining outstanding balance payable at the date of maturity.

Voluntary prepayments of principal amounts outstanding under the term loan facility are permitted at any time; however, if a prepayment of principal is made with respect to a Eurodollar loan on a date other than the last day of the applicable interest period, the Company is required to compensate the lenders for any funding losses and expenses incurred as a result of the prepayment. Prior to the revolving credit facility maturity date, funds borrowed under the revolving credit facility may be borrowed, repaid and reborrowed, without premium or penalty.

In addition, the Company is required to make mandatory prepayments under the facilities with respect to (i) 100% of the net cash proceeds from certain asset dispositions (including casualty and condemnation events) by the Company or certain of its subsidiaries, subject to certain exceptions and reinvestment provisions, (ii) 100% of the net cash proceeds from the issuance or incurrence of any additional debt by the Company or certain of its subsidiaries, subject to certain exceptions, and (iii) 50% of the Company’s excess cash flow, as defined in the credit agreement, subject to reduction upon its achievement of specified performance targets. In accordance with these provisions, a mandatory early prepayment of $6,775 was paid by the Company on April 2, 2021. This amount was included in the current portion of long-term debt, net of unamortized debt issuance costs on the condensed consolidated balance sheet as of December 31, 2020.

The facilities are secured by, among other things, a first priority security interest, subject to permitted liens, in substantially all of the Company’s assets and all of the assets of certain of its subsidiaries and a pledge of certain of the stock of certain of its subsidiaries, in each case subject to specified exceptions. The facilities contain customary affirmative and negative covenants, including certain restrictions on the Company’s ability to pay dividends, and, with respect to the revolving credit facility, a financial covenant requiring the Company to maintain a specified total net leverage ratio in the event that on the last day of any fiscal quarter the Company has utilized more than 30% of its borrowing capacity under the facility. The Company’s net leverage ratio exceeded the maximum on June 30, 2020 and December 31, 2019; however, as the Company’s utilization of the revolving credit facility did not exceed the 30% testing threshold on either June 30, 2020 or December 31, 2019, the Company was not in default of the revolving credit facility as a result of the Company’s net leverage ratio exceeding the maximum permitted amount. The Company was in compliance with all ~~other applicable~~ covenants ~~of the facilities~~ as of June 30, ~~2020~~2021 and December 31, ~~2019.~~2020.

On July 1, 2015, the Company entered into a commercial mortgage loan agreement in the amount of $7,950 (the “Mortgage Loan”). Borrowings under the Mortgage Loan ~~bear~~bore interest at a rate of 3.5% per annum and ~~are~~were repayable in 60 monthly installments of $46, consisting of principal and interest based on a 20-year amortization schedule. The remaining amount of unpaid principal under the Mortgage Loan was paid on the maturity date of July 1, 2020 utilizing the Company’s revolving credit facility. ~~See Note 19,~~ ~~Subsequent Events~~ ~~below for further discussion.~~ Upon entering into the Mortgage Loan, the Company incurred debt issuance cost of $45, which was initially recorded as a direct deduction from the debt liability and iswas amortized to interest expense using the effective interest method from the issuance date of the loan until the maturity date.

The Mortgage Loan was paid on the maturity date of July 1, 2020, utilizing the Company’s revolving credit facility. The Company made principal payments under the Mortgage Loan of ~~$80~~$80 and ~~$78~~$160 during the three ~~months ended June 30, 2020~~ and ~~2019, respectively, and $160 and $156 during the~~ six months ended June 30, 2020, ~~and 2019,~~ respectively. Interest expense, including the amortization of debt issuance costs, totaled $60 and ~~$63~~$120 during the three ~~months ended June 30, 2020~~ and ~~2019, respectively, and $120 and $126 during the~~ six months ended June 30, 2020, ~~and 2019,~~ respectively.

The Mortgage Loan is secured by the land and building purchased in March 2015 and subjects the Company to various affirmative, negative and financial covenants, including maintenance of a minimum debt service ratio. The Company was in compliance with all covenants of the Mortgage Loan as of June 30, 2020 and December 31, 2019.

~~As of June 30, 2020, aggregate minimum future principal payments of the Company’s debt are summarized as follows:~~

The board of directors, on five separate occasions, declared a special dividend to the holders of common stock and preferred stock of record at that time. The below table details the cash dividends declared to stockholders of each share type for each of the five special dividends, as well as the amount of dividends the Company paid in each of the six months ended June 30, 2020 and 2019, respectively:

~~NaN dividend payments were payable as of June 30, 2020 and December 31, 2019.~~

In connection with ~~these~~ special dividends previously declared, the board of directors also approved cash payments to be made to holders of the Company’s stock options, SARs and restricted stock units (“RSUs”) as equitable adjustments to the holders of such instruments in accordance with the provisions of the Company’s equity incentive plans. These equitable adjustment payments are equal to an amount per share multiplied by the net number of shares subject to outstanding equity awards after applying the treasury stock method. The below table provides details of these equitable adjustment payments:

				Equitable Adjustment Payments											Equitable Adjustment Payments
				Six Months Ended				Equitable Adjustment Liability(1)							Six Months Ended				Equitable Adjustment Liability(1)
Dividend Declaration Dates	Equitable Adjustment per share		Year of Final Vesting	June 30, 2020		June 30, 2019		As of June 30, 2020		As of December 31, 2019		Equitable Adjustment per share		Year of Final Vesting	June 30, 2021		June 30, 2020		As of June 30, 2021		As of December 31, 2020
November 30, 2017	$	0.5802	2021	$	121	$	325	$	56	$	177	$	0.5802	2021	$	40	$	121	$	4	$	30
May 10, 2017		1.1774	2021		171		519		11		182		1.1774	2021		53		171		—		31
December 27, 2016		2.3306	2020		276		1,026		56		335		2.3306	2020		2		276		—		2
June 17, 2016		0.5891	2020		54		219		1		37		0.5891	2020		—		54		—		—
November 30, 2014		0.3835	2018		—		1		—		—
Total				$	622	$	2,090	$	124	$	731				$	95	$	622	$	4	$	63

On February 21, 2019, the Company announced a stock repurchase program authorizing it to repurchase up to $75,000 of the Company’s common stock. There were 0 repurchases made during the three and six months ended June 30, 2021. During the three and six months ended June 30, 2020, the Company repurchased 11 and1,227 shares, respectively, for a cost of $33 and ~~$3,031,~~$3,031, including commissions. ~~During the three and six months ended June 30, 2019, the Company did 0t repurchase any shares.~~ As of June 30, ~~2020,~~2021, $70,208 remained authorized for repurchases of the Company’s common stock under the stock repurchase program. The stock repurchase program has no expiration date and does not require usthe Company to purchase a minimum number of shares, and the Company may suspend, modify or discontinue the stock repurchase program at any time without prior notice.

The Company’s 2017 Stock Incentive Plan (the “2017 Plan”) provides for the Company to sell or issue common stock or restricted common stock, or to grant qualified incentive stock options, nonqualified stock options, SARs, performance-based stock units (“PSUs”), RSUs or other stock-based awards to the Company’s employees, officers, directors, ~~advisers~~advisors and outside consultants. The total number of shares authorized for issuance under the 2017 Plan was ~~17,193~~21,179 shares as of June 30, ~~2020~~2021, of which ~~10,797~~10,456 shares remained available for future grant.

The following table summarizes the outstanding stock option activity and a summary of information related to stock options as of and for the six months ended June 30, ~~2020~~2021:

The fair value of each option is estimated on the date of grant using the Black-Scholes option-pricing model using the following assumptions:

	Three Months Ended June 30,		Six Months Ended June 30,		Three Months Ended June 30,		Six Months Ended June 30,
	2020	2019	2020	2019	2021	2020	2021	2020
Risk-free interest rate	0.4%	2.0%	0.4%–0.7%	2.0%–2.5%	1.0%	0.4%	1.0%	0.4%-0.7%
Expected term (in years)	6.1	6.1	6.1	6.1–6.2	6.1	6.1	6.1	6.1
Expected volatility	31.4%	29.1%	29.3%–31.4%	29.1%–30.6%	38.2%	31.4%	38.2%	29.3%-31.4%
Expected dividend yield	0.0%	0.0%	0.0%	0.0%	0.0%	0.0%	0.0%	0.0%

The weighted-average grant-date fair value of options granted during the six months ended June 30, 2021 and 2020 was $3.42 and ~~2019 was~~ $1.15 ~~and $2.45~~ per share, respectively. Cash proceeds received upon the exercise of options were ~~$414~~$1,187 and ~~$2,168~~$414 during the six months ended June 30, ~~2020~~2021 and ~~2019,~~2020, respectively. The intrinsic value of stock options exercised during the six months ended June 30, 2021 and 2020 was $2,496 and ~~2019 was~~ $373, ~~and $6,087,~~ respectively. The aggregate intrinsic value is calculated as the difference between the exercise price of the stock options and the fair value of the Company’s common stock for those stock options that had exercise prices lower than the fair value of the Company’s common stock.

A summary of RSU ~~and PSU~~ activity under the Company’s 2011 Stock Incentive Plan (the “2011 Plan”) and the 2017 Plan for the six months ended June 30, ~~2020~~2021 is as follows:

	Number of Shares			Weighted- Average Grant Date Fair Value		Aggregate Fair Value		Number of Shares			Weighted- Average Grant Date Fair Value		Aggregate Fair Value
Unvested balance at January 1, 2020		1,653		$	11.38
Unvested balance at January 1, 2021									4,231		$	5.43
Granted		3,984			3.45				756			9.15
Vested		(448	)		11.29	$	1,826		(1,133	)		5.93	$	9,392
Forfeited		(94	)		11.88				(212	)		4.81
Unvested balance at June 30, 2020		5,095		$	5.59
Unvested balance at June 30, 2021									3,642		$	6.08

The Company withheld ~~117~~744 and 76117 shares of common stock in settlement of employee tax withholding obligations due upon the vesting of RSUs during the six months ended June 30, ~~2020~~2021 and ~~2019,~~2020, respectively.

During the six months ended June 30, 2021 and 2020, the Company granted ~~983~~ PSUs ~~in February 2020~~ to certain employees that vest over a three-year period based on the achievement of performance goals and continued performance of services. The performance goals consist solely of market-based vesting conditions, determined by the Company’s level of achievement of pre-established parameters relating to the performance of the Company’s stock price as set by the Board of Directors. Vesting may occur at any time during the three-year period.

Compensation expense is based on the estimated value of the awards on the grant date, and is recognized over the period from the grant date through the expected vest dates of each vesting condition, both of which were estimated based on a Monte Carlo simulation model applying the following key assumptions:

~~The actual number~~A summary of ~~shares earned upon vesting will range up to a maximum of 983 shares if all targets are achieved. For~~PSU activity for the six months ended June 30, ~~2020, 0 shares vested.~~2021 is as follows:

Over time, the Company has granted SARs that allow the holder the right, upon exercise, to receive in cash the amount of the difference between the fair value of the Company’s common stock at the date of exercise and the price of the underlying common stock at the date of grant of each SAR. The SARs ~~vest~~vested over a four-year period from the date of grant and expire ten years from the date of grant. During the six months ended June 30, 2021, 20 SARs were exercised with a fair value of $6.75 per share. As of June 30, ~~2020, 220~~2021, 200 outstanding and fully vested SARs wereexercisable with a weighted-average fair value ~~was $1.23~~of $3.23 per SAR. The fair value of the SAR liability as of June 30, ~~2020~~2021 and December 31, ~~2019~~2020 was ~~$271~~$646 and ~~$264,~~$493, respectively, (see Note 8)7) and was included in accrued expenses and other current liabilities in the accompanying condensed consolidated balance sheets.

Stock-based compensation expense related to stock options, RSUs, SARs and PSUs for the three and six months ended June 30, ~~2020~~2021 and ~~2019~~2020 was classified in the condensed consolidated statements of operations and comprehensive (loss) income as follows:

	Three Months Ended June 30,				Six Months Ended June 30,				Three Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020		2019		2021		2020		2021		2020
Cost of revenue	$	39	$	53	$	70	$	124	$	33	$	39	$	66	$	70
Research and development expenses		650		502		1,087		643		543		650		1,414		1,087
Selling, general and administrative expenses		2,890		2,104		4,859		3,792		3,518		2,890		6,067		4,859
Total stock-based compensation	$	3,579	$	2,659	$	6,016	$	4,559	$	4,094	$	3,579	$	7,547	$	6,016

The Company recognized stock-based compensation ~~of $72~~expense for the three and ~~$(205), respectively, as a change in fair value of the outstanding SAR liability and recognized $3,507 and $2,864, respectively, as additional paid-in capital. During the~~ six months ended June 30, ~~2020~~2021 and ~~2019, the Company recognized stock-based compensation expense of $8 and $(865), respectively, as a change~~2020 in the ~~fair value of the outstanding SAR liability and recognized $6,008 and $5,424, respectively,~~condensed consolidated balance sheet as ~~additional paid-in capital.~~follows:

As of June 30, ~~2020,~~2021, there was ~~$24,081~~$23,345 of unrecognized compensation cost related to outstanding stock options, RSUs, SARs and PSUs, which is expected to be recognized over a weighted-average period of ~~2.70~~2.62 years.

Basic and diluted net (loss) income per share attributable to common stockholders was calculated as follows:

	Three Months Ended June 30,					Six Months Ended June 30,						Three Months Ended June 30,						Six Months Ended June 30,
	2020			2019		2020			2019			2021			2020			2021		2020
Numerator:
Net (loss) income attributable to common stockholders, basic and diluted	$	(3,028	)	$	1,291	$	(1,866	)	$	(14,048	)	$	(3,193	)	$	(3,028	)	$	2,556	$	(1,866	)
Denominator:
Weighted-average shares used to compute net (loss) income per share attributable to common stockholders, basic		83,068			83,884		83,505			83,605			85,036			83,068			84,641		83,505
Dilutive effect of stock options		—			2,455		—			—			—			—			2,003		—
Dilutive effect of restricted stock units		—			30		—			—			—			—			2,369		—
Weighted-average shares used to compute net (loss) income per share attributable to common stockholders, diluted		83,068			86,369		83,505			83,605			85,036			83,068			89,013		83,505
Net (loss) income per share attributable to common stockholders:
Basic	$	(0.04	)	$	0.02	$	(0.02	)	$	(0.17	)	$	(0.04	)	$	(0.04	)	$	0.03	$	(0.02	)
Diluted	$	(0.04	)	$	0.01	$	(0.02	)	$	(0.17	)	$	(0.04	)	$	(0.04	)	$	0.03	$	(0.02	)

The following potential common shares, presented based on amounts outstanding at each period end, were excluded from the computation of diluted net (loss) income per share attributable to common stockholders for the periods presented because including them would have been anti-dilutive:

	Three Months Ended June 30,				Six Months Ended June 30,				Three Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020		2019		2021		2020		2021		2020
Options to purchase common stock		7,562		4,212		7,562		8,649		6,639		7,562		2,358		7,562
Unvested restricted stock units		4,112		1,314		4,112		1,549		3,642		4,112		831		4,112
Unvested performance-based stock units		983		—		983		—		442		983		—		983

The Company disaggregates its revenue by product and service in the condensed consolidated statements of operations and comprehensive (loss) income. Performance obligations related to product revenue are recognized at a point in time, while performance obligations related to service revenue are recognized over time. The Company also disaggregates its revenue based on geographic locations of its customers, as determined by the customer’s shipping address, summarized as follows:

	Three Months Ended June 30,				Six Months Ended June 30,				Three Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020		2019		2021		2020		2021		2020
North America:
United States	$	29,349	$	15,432	$	58,789	$	29,988	$	23,951	$	29,349	$	60,863	$	58,789
Canada		4,229		8,038		8,742		11,911		24,550		4,229		50,788		8,742
Total North America		33,578		23,470		67,531		41,899		48,501		33,578		111,651		67,531
Europe, Middle East and Africa:										6,577		7,350		12,931		21,446
Germany		1,199		5,544		4,155		7,824
Other		6,151		7,762		17,291		12,850
Total Europe, Middle East and Africa		7,350		13,306		21,446		20,674
Asia-Pacific:
Australia		26,255		—		47,959		—		20,800		26,255		44,198		47,959
Japan		6,393		6,350		11,199		9,866
Other		3,992		1,490		10,671		2,698		8,893		10,385		15,694		21,870
Total Asia-Pacific		36,640		7,840		69,829		12,564		29,693		36,640		59,892		69,829
Latin America		5,782		7,485		8,167		12,450		7,959		5,782		12,533		8,167
Total revenue⁽¹⁾	$	83,350	$	52,101	$	166,973	$	87,587
Total revenue⁽¹⁾									$	92,730	$	83,350	$	197,007	$	166,973

The Company also disaggregates its revenue based on product line summarized as follows:

	Three Months Ended June 30,				Six Months Ended June 30,				Three Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020		2019		2021		2020		2021		2020
Product revenue:
Wireless	$	15,510	$	1,426	$	36,167	$	1,654	$	33,323	$	15,510	$	73,011	$	36,167
Fixed telecom		23,819		1		41,751		45
Fixed telco										16,137		23,819		31,022		41,751
Cable		32,799		40,796		67,968		67,177		31,009		32,799		70,234		67,968
Total product revenue		72,128		42,223		145,886		68,876		80,469		72,128		174,267		145,886
Service revenue		11,222		9,878		21,087		18,711
Service revenue:
Wireless										1,684		1,074		2,275		2,848
Fixed telco										1,043		301		2,649		551
Cable										9,534		9,847		17,816		17,688
Total service revenue										12,261		11,222		22,740		21,087
Total revenue	$	83,350	$	52,101	$	166,973	$	87,587	$	92,730	$	83,350	$	197,007	$	166,973

As of June 30, ~~2020~~2021 and December 31, ~~2019,~~2020, the Company had short-term capitalized contract costs of ~~$115~~$92 and ~~$585,~~$95, respectively, which are included in prepaid expenses and other current assets and had long-term capitalized contract costs of ~~$91~~$63 and $70, respectively, which are included in other assets in the accompanying condensed consolidated balance sheets. During the three months ended June 30, ~~2020~~2021 and ~~2019,~~2020, amortization expense associated with capitalized contract costs was $29 and $196, ~~and $55,~~ respectively,and during the six months ended June 30, 2021 and 2020 was $52 and ~~2019 was~~ $449, ~~and $121,~~ respectively, all of which ~~were~~was recorded to selling, general and administrative expenses in the accompanying condensed consolidated statements of operations and comprehensive (loss) income.

Contract liabilities consist of deferred revenue and include payments received in advance of performance under the contract. Such amounts are recognized as revenue when the Company satisfies its performance obligations, consistent with the above methodology. For the three and six months ended June 30, 2021, the Company recognized $4,969and $11,979, respectively, of revenue that was included in deferred revenue as of December 31, 2020. For the three and six months ended June 30, 2020, the Company recognized $13,600and $28,539, respectively, of revenue that was included in deferred revenue as of December 31, ~~2019. For three and six months ended June 30, 2019, the Company recognized $5,919 and $13,188, respectively, of revenue that was included in deferred revenue as of January 1,~~ 2019.

The Company receives payments from customers based upon contractual billing terms. Accounts receivable are recorded when the right to consideration becomes unconditional. Contract assets include amounts related to the Company’s contractual right to consideration for both completed and partially completed performance obligations that may not have been invoiced. As of June 30, ~~2020~~2021 and December 31, ~~2019,~~2020, the Company included contract assets of ~~$201~~$288 and ~~$50,~~$771, respectively, which is ~~included in prepaid expenses and other current assets~~netted with deferred revenue in the accompanying condensed consolidated balance sheets.

As of June 30, ~~2020,~~2021, the aggregate remaining amount of revenue expected to be recognized related to unsatisfied or partially unsatisfied performance obligations is ~~$21,607,~~$25,552, which consists of ~~order backlog and~~ deferred revenue. The Company expects approximately ~~83.6%~~79% of this amount to be recognized in the next twelve months with the remaining amounts to be recognized over the next two to five years.

The Company’s customary payment terms are generally ~~one year~~90 days or less. If the Company provides extended payment terms that represent a significant financing component, the Company adjusts the amount of promised consideration for the time value of money using ~~its discounted~~an appropriate discount rate and recognizes interest income separate from the revenue recognized on contracts with customers. During the three months ended June 30, ~~2020~~2021 and ~~2019,~~2020, the Company recorded interest income of ~~$13~~$4 and ~~$50,~~ $13,respectively, and during the six months ended June 30, ~~2020~~2021 and ~~2019,~~2020, the Company recorded interest income of ~~$47~~$8 and ~~$76,~~$47, respectively, all of which were recorded in the in the condensed consolidated statements of operations and comprehensive (loss) income.

When a customer contract includes future trade-in rights, which are distinct performance obligations, the Company accounts for the customer contract by recognizing the revenue on the products transferred, deferring revenue allocated to the future product based on a relative standalone selling price, and an asset for the value of the trade-in product to be recovered from the customer upon delivery of the future product. The Company assesses and updates these estimates each reporting period, and updates to these estimates may result in either an increase or decrease in the amount of the future product liability and product return asset. The Company recognizes revenue allocated to the future product when the product has shipped or been delivered and control has transferred. As of June 30, 2020 and December 31, 2019, there were no future product liabilities or product return assets.

The Company operates as 1 operating segment. Operating segments are defined as components of an enterprise for which separate financial information is regularly evaluated by the Company’s chief operating decision maker, or decision-making group, in deciding how to allocate resources and assess performance. The Company has determined that its chief operating decision maker is its President and Chief Executive Officer. The Company’s chief operating decision maker reviews the Company’s financial information on a consolidated basis for purposes of allocating resources and assessing financial performance. Since the Company operates as one operating segment, all required financial segment information can be found in these condensed consolidated financial statements.

	June 30, 2020		December 31, 2019		June 30, 2021		December 31, 2020
United States	$	23,464	$	25,583	$	18,657	$	20,988
China		3,136		3,277		2,722		2,986
Australia		3,309		4,041		2,434		2,849
Other		2,394		3,009		1,658		2,057
Total property and equipment, net	$	32,303	$	35,910	$	25,471	$	28,880

Rongke Xie, who serves as Deputy General Manager of Guangzhou Casa Communication Technology LTD (“Casa China”), a subsidiary of the Company, is the sister of Lucy Xie, the Company’s Senior Vice President of Operations and a member of the Company’s board of directors. Casa China paid Rongke Xie ~~$122~~$150 and ~~$74~~$122 in total compensation induring the six months ended June 30, ~~2020~~2021 and ~~2019,~~2020, respectively, for her services as an employee.

In March 2020, February 2019 and June 2018, the Company granted to Rongke Xie 90, 8 and 5 RSUs, respectively, which vest over four annual periods. The grant-date fair value of the awards totaled $400, which will be recorded as stock-based compensation expense over the vesting period of the awards. During the three months ended June 30, ~~2020~~2021 and ~~2019,~~2020, the Company recognized selling, general and administrative expenses of ~~$24~~$25 and ~~$13~~$24 related to these awards and during the six months ended June 30, ~~2020~~2021 and ~~2019,~~2020, the Company recognized selling, general and administrative expenses of ~~$37~~$50 and ~~$22~~$37 related to these awards.

The Company leases manufacturing, warehouse and office space in the United States, China, Hong Kong, Spain, Australia and the United Kingdom under non-cancelable operating leases that expire through 2023. The Company also has a lease in Ireland that expires in 2026, but provides the Company the right to terminate in 2021. Rent expense for the three months ended June 30, 2020 and 2019 was $806 and $373, respectively, and for the six months ended June 30, 2020 and 2019 was $1,563 and $700, respectively. Rent expense is recorded on a straight-line basis, and, as a result, as of June 30, 2020 and December 31, 2019, the Company had a deferred rent liability of $144 and $212, respectively, which is included in accrued expenses and other current liabilities in the accompanying condensed consolidated balance sheets.

~~Future minimum lease payments under non-cancelable operating leases as of June 30, 2020 were as follows:~~

The Company has, in the ordinary course of business, agreed to defend and indemnify certain customers against third-party claims asserting (i) infringement of certain intellectual property rights, which may include patents, copyrights, trademarks or trade ~~secrets.~~secrets, and (ii) certain other harms caused by the acts or omissions on the Company.

As permitted under Delaware law, the Company indemnifies its officers, directors and employees for certain events or occurrences that happen by reason of their relationship with or position held at the Company.

As of June 30, ~~2020~~2021 and December 31, ~~2019,~~2020, the Company had not experienced any losses related to these indemnification obligations and 0 material claims were ~~outstanding.~~outstanding where a contingent loss was considered to be probable or reasonably estimable. The Company does not expect significant claims related to these indemnification obligations and, consequently, concluded that the fair value of these obligations is negligible, and no related liabilities were recorded in its condensed consolidated financial statements.

~~On May 29, 2019 and July 3, 2019, 2 putative class action lawsuits, Shen v. Chen et al. and Baig v. Chen et al., were filed~~The complete response to this section regarding legal proceedings is incorporated by reference herein to Part II Item I in the Massachusetts Superior Court against the Company, certain of its current and former executive officers and directors, Summit Partners, the Company’s largest investor, and the underwriters from the Company’s December 15, 2017 initial public offering (the “IPO”) (collectively, the “defendants”). These complaints purport to be brought on behalf of all purchasers of the Company’s common stock in and/or traceable to the IPO. The complaints generally allege that (i) each of the defendants violated Section 11 and/or Section 12(a)(2) of the Securities Act of 1933, as amended, (the “Securities Act”), because documents related to the Company’s IPO including its registration statement and prospectus were materially misleading by containing untrue statements of material fact and/or omitting to state material facts necessary to make such statements not misleading and (ii) the individual defendants and Summit Partners acted as controlling persons within the meaning and in violation of Section 15 of the Securities Act. On August 13, 2019, the Court consolidated these actions and referred the consolidated actions to the Business Litigation Session of the Massachusetts Superior Court (the “BLS”). On September 3, 2019, the BLS accepted the consolidated action into its session for further proceedings. On November 12, 2019, the plaintiffs filed an amended shareholder class action complaint, purportedly on behalf of all purchasers of the Company’s common stock in and/or traceable to the IPO, which contains substantially similar allegations and asserts the same claims as the two initial complaints, described above. Plaintiffs seek compensatory damages, costs and expenses, including counsel and expert fees, rescission or a rescissory measure of damages, and equitable and injunctive relief. On January 14, 2020, the defendants served motions to dismiss the amended complaint, which remain pending.this 10-Q.

On August 9, 2019, a third putative class action lawsuit, Donald Hook v. Casa Systems, Inc. et al., was filed in the Supreme Court of New York, New York County, against the Company, certain of its current and former executive officers and directors, Summit Partners, and the underwriters from the IPO. The complaint purports to be brought on behalf of all purchasers of the Company’s common stock in and/or traceable to the IPO and generally alleges that (i) each of the defendants violated Section 11 and/or Section 12(a)(2) of the Securities Act of 1933, as amended, or the Securities Act, because documents related to the IPO including its registration statement and prospectus were materially misleading by containing untrue statements of material fact and/or omitting to state material facts necessary to make such statements not misleading and (ii) the individual defendants and Summit Partners acted as controlling persons within the meaning and in violation of Section 15 of the Securities Act. On November 22, 2019, the plaintiff filed an amended complaint, purportedly on behalf of all purchasers of the Company’s common stock in and/or traceable to the IPO, which contains substantially similar allegations as the initial complaint, described above, and asserts claims for violations of Sections 11 and 15 of the Securities Act. The plaintiff seeks compensatory damages, costs and expenses, including counsel and expert fees, rescission or a rescissory measure of damages, disgorgement, and equitable and injunctive relief. On January 21, 2020, the defendants served motions to dismiss the amended complaint, which remain pending.

On August 13, 2019, a fourth putative class action lawsuit, Panther Partners, Inc. v. Guo et al., was filed in the Supreme Court of New York, New York County, against the Company, certain of its current and former executive officers and directors, and the underwriters from the Company’s April 30, 2018 follow-on offering of common stock, (the “Follow-on Offering”). The complaint purports to be brought on behalf of all purchasers of the Company’s common stock in the Follow-on Offering and generally alleges that (i) each of the defendants, other than Abraham Pucheril, violated Section 11 of the Securities Act, and each of the defendants violated Section 12(a)(2) of the Securities Act, because documents related to the Company’s Follow-on Offering, including its registration statement and prospectus, were materially misleading by containing untrue statements of material fact and/or omitting to state material facts necessary to make such statements not misleading and (ii) the individual defendants acted as controlling persons within the meaning and in violation of Section 15 of the Securities Act. On November 22, 2019, the plaintiff filed an amended class action complaint, purportedly on behalf of all purchasers of the Company’s common stock in the Follow-on Offering, which contains substantially similar allegations and asserts the same claims as the initial complaint, described above. The plaintiff seeks compensatory damages, costs and expenses, including counsel and expert fees, rescission or a rescissory measure of damages, and equitable and injunctive relief. On January 21, 2020, the defendants served motions to dismiss the amended complaint, which remain pending.

NaN amounts have been accrued for any of the putative class action lawsuits referenced above as of June 30, 2020 as the Company does not believe the likelihood of a material loss is probable. Although the ultimate outcome of these matters cannot be predicted with certainty, the resolution of any of these matters could have a material impact on the Company’s results of operations if a material loss becomes probable and estimable in a future period.

On July 1, 2020, the Company’s mortgage loan matured and the remaining principal of $6,483 together with interest of $19, was paid in full. To fund this repayment, the Company drew down on its revolving credit facility under its term loan agreement in the amount of $6,500. This draw down does not constitute an event of default under the terms of the underlying agreement. As noted in Note 11, ~~Debt~~, borrowings under the revolving credit facility mature on December 21, 2021 and the applicable margin for borrowings under the revolving credit facility is 1.75% per annum for Eurodollar rate loans. The interest rate on the outstanding borrowings as of July 1, 2020 was 2.12%, which was based on a six-month Eurodollar rate of 0.37% per annum plus the applicable margin of 1.75% per annum for Eurodollar rate loans.

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

The following discussion of our financial condition and results of operations should be read together with our condensed consolidated financial statements and related notes and other financial information included elsewhere in this Quarterly Report on Form 10-Q. The following discussion contains forward-looking statements that reflect our plans, estimates and beliefs. Our actual results could differ materially from those discussed in the forward-looking statements. Factors that could cause or contribute to these differences include those discussed below and elsewhere in this Quarterly Report on Form 10-Q, particularly in the section titled “Risk Factors.” For discussion comparing the period ended June 30, 2020 and June 30, 2019, please refer to our Quarterly Report on form 10-Q, filed with the SEC on July 31, 2020.

Our solutions are conceived, designed and built to enable our ~~broadband service provider~~CSP customers to offer high bandwidth data services to their subscribers, and ~~help them as they~~to transform their networks to meet the growing demand for bandwidth and the introduction of new services. We offer ~~converged solutions for next-generation centralized, distributed~~physical, virtual and ~~virtualized architectures for cable broadband, fixed-line~~cloud-native 5G broadband and ~~wireless~~customer premise networking equipment for public and private high-speed data and multi-service communications networks. Our ~~innovative products enable customers~~core and edge broadband technology enables CSPs and enterprises to cost-effectively and dynamically increase data network speed for their subscribers, add bandwidth capacity and new services, ~~for consumers and enterprises,~~ reduce network complexity, and reduce operating and capital expenditures.

~~We have a history of innovation and being the first to market with novel products at each generational shift in network technology. For example:~~

We offer scalable solutions that can meet the evolving bandwidth needs of our customers and their subscribers. Our first installation in a service provider’s network frequently involves deploying our broadband products in only a portion of the provider’s network and, for our cable products, with only a fraction of the capacity of our products enabled at the time of initial installation. Over time, our customers have generally expanded the use of our solutions to other areas of their networks to extend network coverage or increase network capacity. ~~Capacity expansions~~

Our solutions are ~~accomplished either~~commercially deployed in over 70 countries by ~~deploying additional systems, line cards, or~~more than 475 customers, including regional service providers as well as some of the ~~sale~~world’s largest Tier 1 CSPs, serving millions of ~~additional channels through the use of software. Sales of software-based capacity expansions generate higher gross margins than hardware-based deployments.~~

On July 1, 2019, we completed the acquisition of NetComm Wireless Limited, or NetComm, a global leader in the development of fixed wireless and distribution point broadband solutions. The combined company now offers a broad, highly competitive product portfolio for new 4G and 5G fixed wireless access products and customer premise equipment for vDSL2 and G.fast services for service providers.subscribers.

The ~~emergence of the coronavirus disease in 2019, or~~ COVID-19 ~~around the world, and particularly in the United States and China,~~pandemic and the accompanying responses of governments and businesses to the pandemic continue to present various risks to us, not all of which we are able to fully evaluate or ~~even to~~ foresee at the current time. While the COVID-19 pandemic did not significantly adversely affect our financial results, business operations or liquidity induring the ~~quarter~~three and six months ended June 30, ~~2020,~~2021, economic and health conditions in the United States and across most of the globe changed rapidly during the period and are continuing to change after the end of the quarter. Globally, ~~to date,~~ all aspects of our business remain fully ~~operational, our work from home contingency plans have been implemented and are operating successfully.~~operational. The pandemic has ~~resulted in~~led to increased demand for certain of our products, ~~and~~ resulting in increased order volumes that have created additional pressure on our supply chain. ~~To date, while~~In addition, certain of our products utilize components, for which there has been increased global demand. As a result, we have begun to see shortages of supply that have increased the ~~increased demand has not resulted~~likelihood of an adverse impact on our future revenue and gross margins and ability to fill orders for customers in ~~any material delays to our production cycle, we~~a timely manner. We continue to work with our supply chain and contract manufacturers, ~~in an effort~~as well as our customers, to ~~ensure continued availability~~minimize the possible extent of ~~all anticipated inventory requirements.~~such impacts. However, ~~we cannot~~ at this time we are neither able to estimate the extent of these impacts nor predict whether ~~or to what extent,~~ our efforts to minimize or contain them will be successful. Additionally, we saw decreases in certain operating expenses, such as travel and trade show expense, during the three months ended June 30, 2020 due to the COVID-19 pandemic that we cannot ensure will be maintained. We intend to continue to monitor our business very closely for any effects of COVID-19 for as long as ~~necessary~~necessary.

Additionally, we saw decreases in certain operating expenses, such as travel and trade show expense, and benefited from certain U.S. government tax relief measures, discussed further below, during the year ended December 31, 2020, and the three and six months ended June 30, 2021, due to the COVID-19 pandemic that we expect to gradually diminish as the various geographies in which we operate begin to recover from the pandemic

The Coronavirus Aid, Relief and Economic Security Act (“CARES Act”) was signed into law on March 27, 2020. The CARES Act, among other things, includes tax provisions relating to refundable payroll tax credits, deferment of employer’s Social Security payments, net operating loss utilization and carryback periods, modifications to the net interest deduction limitations and technical corrections to tax depreciation methods for qualified improvement property (QIP). For the three and six months ended June 30, 2021, we recognized a reduction to cost of goods sold of $0.3 million and $0.6 million, respectively and a reduction in operating expenses of $2.1 million and $4.3 million, respectively, for a payroll tax credit under the CARES Act. For the three and six months ended June 30, 2020, we recognized an ~~ongoing basis.~~ income tax benefit of $9.3 million, respectively (see Note 9 to our accompanying financial statements). We will continue to evaluate the impact of the CARES Act on our financial position, results of operations, and cash flows.

Due to the above circumstances and as described generally in this Quarterly Report on Form 10-Q, our results of operations for the three and six months ended June 30, ~~2020~~2021 are not necessarily indicative of the results to be expected ~~for the full year.~~in future periods. Management cannot predict the full impact of the COVID-19 pandemic on our sales channels, supply chain, manufacturing and distribution, or on economic conditions generally, including the effects on our current and potential customers, who may curtail spending on investments in current and/or new technologies, delay new equipment evaluations and trials, and possibly delay payments based on liquidity concerns, all of which could have a material impact on our business in the future. Similarly, our supply chain and our contract manufacturers could be affected, which could cause disruptions to our ability to meet customer ~~demand. Although~~demand or delivery schedules. For the three and six months ended June 30, 2021, we ~~have not been materially~~did see certain delays in supply chain that adversely impacted ~~to date, we cannot predict the extent to which this may impact the future results~~a small number of ~~our operations.~~delivery schedules. If COVID-19 were to ~~cause~~have such ~~impacts~~effects in the future, there would likely be a material adverse impact on our financial results, liquidity and capital resource needs. ~~The use~~This uncertainty makes it challenging for management to estimate the future performance of our ~~revolving line~~businesses, particularly in the near to medium term. However, the impact of ~~credit is currently restricted based~~COVID-19 could have a material adverse impact on our results of operations in the ~~financial covenants we are subject~~near to and COVID-19 has further created significant uncertainty within capital markets such that access to sufficient additional capital resources, if needed, may not be available. Thus, the ultimate extent of the effects of the COVID-19 pandemic on the Company is highly uncertain and dependent upon future developments, and such effects could exist for an extended period of time even after the pandemic might end.medium term.

The following tables set forth our consolidated results of operations in dollar amounts and as percentage of total revenue for the periods shown:

	Three Months Ended June 30,						Six Months Ended June 30,						Three Months Ended June 30,						Six Months Ended June 30,
	2020			2019			2020			2019			2021			2020			2021			2020
	(in thousands)						(in thousands)						(in thousands)						(in thousands)
Revenue:
Product	$	72,128		$	42,223		$	145,886		$	68,876		$	80,469		$	72,128		$	174,267		$	145,886
Service		11,222			9,878			21,087			18,711			12,261			11,222			22,740			21,087
Total revenue		83,350			52,101			166,973			87,587			92,730			83,350			197,007			166,973
Cost of revenue⁽¹⁾:
Product		39,011			10,976			78,655			20,405			46,117			39,011			93,143			78,655
Service		1,209			1,820			2,535			3,380			1,098			1,209			2,309			2,535
Total cost of revenue		40,220			12,796			81,190			23,785			47,215			40,220			95,452			81,190
Gross profit		43,130			39,305			85,783			63,802			45,515			43,130			101,555			85,783
Operating expenses:
Research and development⁽¹⁾		20,688			18,260			41,899			36,665			20,295			20,688			41,901			41,899
Selling, general and administrative⁽¹⁾		21,110			17,302			46,101			37,495			21,583			21,110			43,463			46,101
Total operating expenses		41,798			35,562			88,000			74,160			41,878			41,798			85,364			88,000
Income (loss) from operations		1,332			3,743			(2,217	)		(10,358	)		3,637			1,332			16,191			(2,217	)
Other income (expense), net		(3,473	)		(3,010	)		(7,481	)		(6,418	)		(3,648	)		(3,473	)		(8,127	)		(7,481	)
(Loss) income before provision for (benefit from) income taxes		(2,141	)		733			(9,698	)		(16,776	)		(11	)		(2,141	)		8,064			(9,698	)
Provision for (benefit from) income taxes		887			(558	)		(7,832	)		(2,728	)		3,182			887			5,508			(7,832	)
Net (loss) income	$	(3,028	)	$	1,291		$	(1,866	)	$	(14,048	)	$	(3,193	)	$	(3,028	)	$	2,556		$	(1,866	)

	Three Months Ended June 30,				Six Months Ended June 30,				Three Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020		2019		2021		2020		2021		2020
	(in thousands)				(in thousands)				(in thousands)				(in thousands)
Cost of revenue	$	39	$	53	$	70	$	124	$	33	$	39	$	66	$	70
Research and development expense		650		502		1,087		643		543		650		1,414		1,087
Selling, general and administrative expense		2,890		2,104		4,859		3,792		3,518		2,890		6,067		4,859
Total stock-based compensation expense	$	3,579	$	2,659	$	6,016	$	4,559	$	4,094	$	3,579	$	7,547	$	6,016

	Three Months Ended June 30,						Six Months Ended June 30,						Three Months Ended June 30,						Six Months Ended June 30,
	2020			2019			2020			2019			2021			2020			2021			2020
	(as a percentage of total revenue)												(as a percentage of total revenue)						(as a percentage of total revenue)
Revenue:
Product		86.5	%		81.0	%		87.4	%		78.6	%		86.8	%		86.5	%		88.5	%		87.4	%
Service		13.5			19.0			12.6			21.4			13.2			13.5			11.5			12.6
Total revenue		100.0			100.0			100.0			100.0			100.0			100.0			100.0			100.0
Cost of revenue:
Product		46.8			21.1			47.1			23.3			49.7			46.8			47.3			47.1
Service		1.5			3.5			1.5			3.9			1.2			1.5			1.2			1.5
Total cost of revenue		48.3			24.6			48.6			27.2			50.9			48.3			48.5			48.6
Gross profit		51.7			75.4			51.4			72.8			49.1			51.7			51.5			51.4
Operating expenses:
Research and development		24.8			35.0			25.1			41.9			21.9			24.8			21.3			25.1
Selling, general and administrative		25.3			33.2			27.6			42.8			23.3			25.3			22.1			27.6
Total operating expenses		50.1			68.3			52.7			84.7			45.2			50.1			43.3			52.7
Income (loss) from operations		1.6			7.2			(1.3	)		(11.8	)		3.9			1.6			8.2			(1.3	)
Other income (expense), net		(4.2	)		(5.8	)		(4.5	)		(7.3	)		(3.9	)		(4.2	)		(4.1	)		(4.5	)
(Loss) income before provision for (benefit from) income taxes		(2.6	)		1.4			(5.8	)		(19.2	)		—			(2.6	)		4.1			(5.8	)
Provision for (benefit from) income taxes		1.1			(1.1	)		(4.7	)		(3.1	)		3.4			1.1			2.8			(4.7	)
Net (loss) income		(3.6	)%		2.5	%		(1.1	)%		(16.0	)%		(3.4	)%		(3.6	)%		1.3	%		(1.1	)%

Percentages in the table above are based on actual values. As a result, some totals may not sum due to rounding.

Three Months Ended June 30, ~~2020~~2021 Compared to the Three Months Ended June 30, ~~2019~~2020

	Three Months Ended June 30,																Three Months Ended June 30,
	2020					2019					Change						2021					2020					Change
	Amount		% of Total			Amount		% of Total			Amount			%			Amount		% of Total			Amount		% of Total			Amount			%
	(dollars in thousands)																(dollars in thousands)
Revenue:
Product	$	72,128		86.5	%	$	42,223		81.0	%	$	29,905			70.8	%	$	80,469		86.8	%	$	72,128		86.5	%	$	8,341			11.6	%
Service		11,222		13.5	%		9,878		19.0	%		1,344			13.6	%		12,261		13.2	%		11,222		13.5	%		1,039			9.3	%
Total revenue	$	83,350		100.0	%	$	52,101		100.0	%	$	31,249			60.0	%	$	92,730		100.0	%	$	83,350		100.0	%	$	9,380			11.3	%
Revenue by geographic region:
North America	$	33,578		40.3	%	$	23,470		45.1	%	$	10,108			43.1	%	$	48,501		52.3	%	$	33,578		40.3	%	$	14,923			44.4	%
Europe, Middle East and Africa		7,350		8.8	%		13,306		25.5	%		(5,956	)		(44.8	)%		6,577		7.1	%		7,350		8.8	%		(773	)		(10.5	)%
Asia-Pacific		36,640		44.0	%		7,840		15.0	%		28,800			367.3	%		29,693		32.0	%		36,640		44.0	%		(6,947	)		(19.0	)%
Latin America		5,782		6.9	%		7,485		14.4	%		(1,703	)		(22.8	)%		7,959		8.6	%		5,782		6.9	%		2,177			37.7	%
Total revenue	$	83,350		100.0	%	$	52,101		100.0	%	$	31,249			60.0	%	$	92,730		100.0	%	$	83,350		100.0	%	$	9,380			11.3	%

The increase in product revenue was primarily ~~due~~attributed to the ~~completion of~~continued increased demand for our wireless products, including significantly increased sales to certain Tier 1 customers in the NetComm acquisition effective July 1, 2019, which contributed $37.4 million of revenue for the three months ended June 30, 2020, including $23.8 million and $13.2 million in Fixed telecom and Wireless revenues, respectively,North America region, partially offset by ~~decreased~~decreases in revenue from cable ~~revenue.~~and fixed telco, the latter of which is a product line currently in a transition period, as we diversify our customer base and grow revenue from new fixed telco product offerings.

The increase in service revenue was primarily due to ~~an increase in~~increased product revenues with attached support ~~renewal attach rates as well as lower discounts.~~

~~The increase in~~ revenue, ~~in the Asia-Pacific region is primarily due to the NetComm acquisition effective July 1, 2019.~~and also from new service agreements with certain large wireless customers.

	Three Months Ended June 30,				Change						Three Months Ended June 30,				Change
	2020		2019		Amount			%			2021		2020		Amount			%
	(dollars in thousands)										(dollars in thousands)
Cost of revenue:
Product	$	39,011	$	10,976	$	28,035			255.4	%	$	46,117	$	39,011	$	7,106			18.2	%
Service		1,209		1,820		(611	)		(33.6	)%		1,098		1,209		(111	)		(9.2	)%
Total cost of revenue	$	40,220	$	12,796	$	27,424			214.3	%	$	47,215	$	40,220	$	6,995			17.4	%

	Three Months Ended June 30,															Three Months Ended June 30,
	2020					2019					Change					2021					2020					Change
	Amount		Gross Margin			Amount		Gross Margin			Amount		Gross Margin (bps)			Amount		Gross Margin			Amount		Gross Margin			Amount		Gross Margin (bps)
	(dollars in thousands)															(dollars in thousands)
Gross profit:
Product	$	33,117		45.9	%	$	31,247		74.0	%	$	1,870		(2,810	)	$	34,352		42.7	%	$	33,117		45.9	%	$	1,235		(320	)
Service		10,013		89.2	%		8,058		81.6	%		1,955		760			11,163		91.0	%		10,013		89.2	%		1,150		180
Total gross profit	$	43,130		51.7	%	$	39,305		75.4	%	$	3,825		(2,370	)	$	45,515		49.1	%	$	43,130		51.7	%	$	2,385		(260	)

The increase in cost of product revenue was attributed to increased revenue. The gross margin decrease was due to product mix, with sales of certain lower gross margin wireless products comprising a higher percentage of total revenue in the three months ended June 30, 2021 as compared to the three months ended June 30, 2020.

The decrease in ~~product gross margin percentage was primarily due to the acquisition~~cost of ~~NetComm, which sells hardware-based products that provide lower gross margins than our historical product offerings.~~

~~The~~service revenue and increase in service gross margin ~~was~~were primarily due to a decrease in ~~subcontracted installation, integration and resident engineering~~utilization of third-party professional ~~services rendered in the quarter as well as lower discounts.~~services.

	Three Months Ended June 30,						Change					Three Months Ended June 30,						Change
	2020			2019			Amount		%			2021			2020			Amount			%
	(dollars in thousands)											(dollars in thousands)
Research and development	$	20,688		$	18,260		$	2,428		13.3	%	$	20,295		$	20,688		$	(393	)		(1.9	)%
Percentage of revenue		24.8	%		35.0	%							21.9	%		24.8	%

The ~~increase~~decrease in research and development expense was primarily due to ~~the acquisition of NetComm, including~~ a ~~$1.5~~$0.9 million ~~increase in personnel-related costs and a $0.8 million increase~~decrease in purchases of research and development materials. This decrease was partially offset by a $0.3 million increase in professional services and a $0.2 million increase in personnel costs, driven by an increase in headcount in 2021, which increased salaries and benefits by $1.5 million, and was partially offset by a reduction in payroll taxes due to a CARES Act credit of $1.3 million during the three months ended June 30, 2021.

	Three Months Ended June 30,						Change					Three Months Ended June 30,						Change
	2020			2019			Amount		%			2021			2020			Amount		%
	(dollars in thousands)											(dollars in thousands)
Selling, general and administrative	$	21,110		$	17,302		$	3,808		22.0	%	$	21,583		$	21,110		$	473		2.2	%
Percentage of revenue		25.3	%		33.2	%							23.3	%		25.3	%

The increase in selling, general and administrative expense was primarily driven by ~~the acquisition~~an increase of ~~NetComm including increases~~$0.3 million in ~~personnel-related costs of $1.4 million, facilities costs of $0.5 million~~trade show expenses in 2021 and ~~depreciation and amortization expense of $1.2 million. In addition, there was~~ a ~~$0.7~~$0.8 million increase in ~~professional services related to our audit and tax consulting services and~~personnel costs, which was driven by a ~~$0.4~~$1.3 million increase in ~~partner commissions~~salaries and benefits due to increased ~~sales volume. These increases were~~headcount in 2021 compared to 2020 and an increase in stock-based compensation of $0.6 million in 2021, partially offset by a ~~$0.6~~decrease of $0.3 million in commissions and a $0.8 million decrease in ~~transaction costs associated with the acquisition of NetComm on July 1, 2019 incurred~~payroll taxes due to a CARES Act credit during the three months ended June 30, ~~2019.~~2021. These increases in selling, general and administrative expense was partially offset by a $0.7 million decrease in depreciation expense as assets that became fully depreciated were not replaced.

	Three Months Ended June 30,						Change						Three Months Ended June 30,						Change
	2020			2019			Amount			%			2021			2020			Amount			%
	(dollars in thousands)												(dollars in thousands)
Other income (expense), net	$	(3,473	)	$	(3,010	)	$	(463	)		15.4	%	$	(3,648	)	$	(3,473	)	$	(175	)		5.0	%
Percentage of revenue		(4.2	)%		(5.8	)%								(3.9	)%		(4.2	)%

The change in other income (expense), net was primarily due to a ~~$1.3~~$0.7 million increase in foreign exchange losses due to fluctuations in the Australian dollar and the China Renminbi exchange rates and a $0.2 million decrease in interest income due to ~~a decrease in our portfolio of cash equivalents balances following our acquisition of NetComm on July 1, 2019,~~lower interest rates, partially offset by a ~~$0.9~~$0.4 million increase in other income due to R&D grant income received in China and a $0.3 million decrease in interest expense due to decreases in both the outstanding principal balance and the interest rate on our term loan facility.

The change into the income ~~taxes~~tax provision for the three months ended June 30, 2021 compared to the income tax provision for the three months ended June 30, 2020 ~~compared to the three months ended June 30, 2019~~ was primarily due to ~~geographical~~changes in the jurisdictional mix of ~~profits as well as a full valuation allowance against the deferred tax assets in the United States.~~earnings period over period.

Six Months Ended June 30, ~~2020~~2021 Compared to the Six Months Ended June 30, ~~2019~~2020

	Six Months Ended June 30,																Six Months Ended June 30,
	2020					2019					Change						2021					2020					Change
	Amount		% of Total			Amount		% of Total			Amount			%			Amount		% of Total			Amount		% of Total			Amount			%
	(dollars in thousands)																(dollars in thousands)
Revenue:
Product	$	145,886		87.4	%	$	68,876		78.6	%	$	77,010			111.8	%	$	174,267		88.5	%	$	145,886		87.4	%	$	28,381			19.5	%
Service		21,087		12.6	%		18,711		21.4	%		2,376			12.7	%		22,740		11.5	%		21,087		12.6	%		1,653			7.8	%
Total revenue	$	166,973		100.0	%	$	87,587		100.0	%	$	79,386			90.6	%	$	197,007		100.0	%	$	166,973		100.0	%	$	30,034			18.0	%
Revenue by geographic region:
North America	$	67,531		40.5	%	$	41,899		47.9	%	$	25,632			61.2	%	$	111,651		56.6	%	$	67,531		40.5	%	$	44,120			65.3	%
Europe, Middle East and Africa		21,446		12.8	%		20,674		23.6	%		772			3.7	%		12,931		6.6	%		21,446		12.8	%		(8,515	)		(39.7	)%
Asia-Pacific		69,829		41.8	%		12,564		14.3	%		57,265			455.8	%		59,892		30.4	%		69,829		41.8	%		(9,937	)		(14.2	)%
Latin America		8,167		4.9	%		12,450		14.2	%		(4,283	)		(34.4	)%		12,533		6.4	%		8,167		4.9	%		4,366			53.5	%
Total revenue	$	166,973		100.0	%	$	87,587		100.0	%	$	79,386			90.6	%	$	197,007		100.0	%	$	166,973		100.0	%	$	30,034			18.0	%

	Six Months Ended June 30,				Six Months Ended June 30,				Change
	2020		2019		2021		2020		Amount			%
Product revenue:
Wireless	$	36,167	$	1,654	$	73,011	$	36,167	$	36,844			101.9	%
Fixed telecom		41,751		45
Fixed telco						31,022		41,751		(10,729	)		(25.7	)%
Cable		67,968		67,177		70,234		67,968		2,266			3.3	%
Total product revenue		145,886		68,876		174,267		145,886		28,381			19.5	%
Service revenue		21,087		18,711
Service revenue:
Wireless						2,275		2,848		(573	)		(20.1	)%
Fixed telco						2,649		551		2,098			380.8	%
Cable						17,816		17,688		128			0.7	%
Total service revenue						22,740		21,087		1,653			7.8	%
Total revenue	$	166,973	$	87,587	$	197,007	$	166,973	$	30,034			18.0	%

The increase in product revenue was primarily ~~due~~attributed to continued increased demand for our wireless products, as well as an increase in cable product revenue from significantly increased sales to certain Tier 1 customers in the ~~completion of the NetComm acquisition effective July 1, 2019,~~North America region. These increases were partially offset by a decrease in revenue from fixed telco, which ~~contributed $66.6 million of~~is a product line currently in a transition period, as we diversify our customer base and increase revenue for the six months ended June 30, 2020, including $41.8 million and $24.8 million in Fixed telecom and Wireless revenues, respectively. In addition, the six months ended June 30, 2020 included higher revenues from ~~our Cable, Fixed telecom and Wireless products to existing customers.~~new fixed telco product offerings.

The increase in service revenue was primarily due to ~~an increase in~~increased product revenues with attached support ~~renewal attach rates as well as lower discounts.~~

	Six Months Ended June 30,				Change						Six Months Ended June 30,				Change
	2020		2019		Amount			%			2021		2020		Amount			%
	(dollars in thousands)										(dollars in thousands)
Cost of revenue:
Product	$	78,655	$	20,405	$	58,250			285.5	%	$	93,143	$	78,655	$	14,488			18.4	%
Service		2,535		3,380		(845	)		(25.0	)%		2,309		2,535		(226	)		(8.9	)%
Total cost of revenue	$	81,190	$	23,785	$	57,405			241.3	%	$	95,452	$	81,190	$	14,262			17.6	%

The decrease in product gross margin percentage was primarily due to the acquisition of NetComm, which sells hardware-based products that provide lower gross margins than our historical product offerings.

The increase in ~~service~~cost of product revenue was attributed to increased revenue. The product gross margin was ~~due to a decrease in subcontracted installation, integration and resident engineering professional services rendered~~consistent in the six months ended June 30, ~~2020~~2021 as ~~well as lower discounts.~~compared to the six months ended June 30, 2020.

The decrease in cost of service revenue and increase in service gross margin were primarily due to a decrease in utilization of third-party professional services.

	Six Months Ended June 30,						Change					Six Months Ended June 30,						Change
	2020			2019			Amount		%			2021			2020			Amount		%
	(dollars in thousands)											(dollars in thousands)
Research and development	$	41,899		$	36,665		$	5,234		14.3	%	$	41,901		$	41,899		$	2		0.0	%
Percentage of revenue		25.1	%		41.9	%							21.3	%		25.1	%

~~The increase in research~~Research and development expense was ~~primarily~~consistent for the six months ended June 30, 2021 and 2020. Personnel costs remained consistent overall, however salaries and benefits increased $2.6 million in the six months ended June 30, 2021 due to ~~the acquisition~~increased headcount, offset by a reduction in payroll taxes due to a CARES Act credit of ~~NetComm, including a $3.9~~$2.6 million ~~increase in personnel-related costs and a $0.8 million increase in purchases of research and development materials. There was also an increase of $0.4 million in professional services spending~~ during the six months ended June 30, ~~2020.~~ 2021. Professional services increased $0.3 million in the six months ended June 30, 2021 and allocated facilities and depreciation costs increased by $0.4 million driven by increased headcount. These increases were offset by a decrease of $0.7 million in purchases of R&D materials.

	Six Months Ended June 30,						Change					Six Months Ended June 30,						Change
	2020			2019			Amount		%			2021			2020			Amount			%
	(dollars in thousands)											(dollars in thousands)
Selling, general and administrative	$	46,101		$	37,495		$	8,606		23.0	%	$	43,463		$	46,101		$	(2,638	)		(5.7	)%
Percentage of revenue		27.6	%		42.8	%							22.1	%		27.6	%

The ~~increase~~decrease in selling, general and administrative expense was primarily driven by a decrease of $1.1 million in professional services due to a ~~$2.6 million increase~~reduction in ~~professional services related to our~~ audit and tax consulting ~~services,~~fees and a ~~$2.4~~$1.5 million ~~increase~~decrease in ~~partner commissions due to increased sales volume,~~depreciation expense as assets that became fully depreciated were not replaced. Personnel costs remained overall consistent for the six months ended June 30, 2021 and 2020, with increases in ~~other costs primarily~~salaries and benefits of $3.5 million, driven by ~~the acquisition~~increased headcount, and stock-based compensation of ~~NetComm including increases in personnel-related costs of $2.8~~$1.2 million, ~~increased facilities costs of $0.9 million and depreciation and amortization expense of $2.9 million. These increases were partially~~ offset by a ~~$1.2~~$2.2 million decrease in bad debt expense due to a customer that filed for reorganization under Chapter 11 of the U.S. Bankruptcy Code in 2019, as well as a $1.4 million decrease in transaction costs associated with the acquisition of NetComm on July 1, 2019 andcommissions, a $0.9 million decrease in ~~trade show expenses related to cancellations~~travel due to ~~COVID-19.~~COVID-19, and a $1.6 million decrease in payroll taxes due to a CARES act credit during the six months ended June 30, 2021.

	Six Months Ended June 30,						Change						Six Months Ended June 30,						Change
	2020			2019			Amount			%			2021			2020			Amount			%
	(dollars in thousands)												(dollars in thousands)
Other income (expense), net	$	(7,481	)	$	(6,418	)	$	(1,063	)		16.6	%	$	(8,127	)	$	(7,481	)	$	(646	)		8.6	%
Percentage of revenue		(4.5	)%		(7.3	)%								(4.1	)%		(4.5	)%

The change in other income (expense), net was primarily due to a ~~$2.5~~$1.6 million increase in foreign exchange losses due to fluctuations in the Australian dollar and the China Renminbi exchange rates and a $0.5 million decrease in interest income due to ~~a decrease in our portfolio of cash equivalents balances following our acquisition of NetComm on July 1, 2019,~~lower interest rates, partially offset by a ~~$1.5~~$0.4 million increase in other income due to R&D grant income received in China and a $1.0 million decrease in interest expense due to decreases in both the outstanding principal balance and the interest rate on our term loan facility.

	Six Months Ended June 30,						Change						Six Months Ended June 30,						Change
	2020			2019			Amount			%			2021			2020			Amount		%
	(dollars in thousands)												(dollars in thousands)
Benefit from income taxes	$	(7,832	)	$	(2,728	)	$	(5,104	)		187.1	%
Provision for (benefit from) income taxes													$	5,508		$	(7,832	)	$	13,340		(170.3	)%
Effective tax rate		80.8	%		16.3	%								68.3	%		80.8	%

The change into the ~~benefit from~~ income ~~taxes~~tax provision for the six months ended June 30, 2021 compared to the income tax benefit for the six months ended June 30, 2020 ~~compared to the six months ended June 30, 2019~~ was primarily due to ~~the pre-tax net loss for~~a discrete tax benefit of $9.3 million recorded in the six months ended June 30, 2020 ~~of $9.7 million, coupled~~associated with the ~~recognition~~enactment of the ~~benefit~~CARES Act. The change in the provision for (benefit from) income taxes was also impacted by changes in the jurisdictional mix of $9.3 million from the Coronavirus Aid, Relief, and Economic Security Act provisions concerning net operating loss carrybacks, compared to the pre-tax net loss for the six months ended June 30, 2019 of $16.8 million.earnings period over period.

Since our inception, we have primarily funded our operations through issuances of shares of our convertible preferred stock, our ~~credit agreement from our term loan facility, our initial public offering~~long-term debt and cash flows from operations.

On February 21, 2019, we entered into a definitive agreement to acquire 100% of the equity interests in NetComm. On July 1, 2019, we closed the acquisition of NetComm for cash consideration of $162.0 million Australian dollars, or AUD ($112.7 million United States dollars, or USD, based on an exchange rate of USD $0.700 per AUD $1.00 on July 1, 2019), using amounts included in restricted cash in the accompanying condensed consolidated balance sheet as of June 30, 2019. In addition, we recognized advisory fee expenses of $1.5 million which became due and payable upon the closing of the acquisition.

The following tables set forth our cash and cash equivalents and working capital as of June 30, ~~2020~~2021 and December 31, ~~2019~~2020 and our cash flows for the six months ended June 30, ~~2020~~2021 and ~~2019:~~2020:

	June 30, 2020		December 31, 2019		June 30, 2021		December 31, 2020
	(in thousands)				(in thousands)
Consolidated Balance Sheet Data:
Cash and cash equivalents	$	149,148	$	113,638	$	168,654	$	157,455
Working capital		219,862		213,977		263,884		251,573

	Six Months Ended June 30,						Six Months Ended June 30,
	2020			2019			2021			2020
	(in thousands)						(in thousands)
Consolidated Cash Flow Data:
Net cash provided by (used in) operating activities	$	43,936		$	(31,120	)
Net cash provided by operating activities							$	26,715		$	43,936
Net cash used in investing activities		(2,717	)		(3,764	)		(2,914	)		(2,717	)
Net cash used in financing activities		(5,386	)		(2,582	)		(12,822	)		(5,386	)

As of June 30, ~~2020,~~2021, we had cash, ~~and~~ cash equivalents and restricted cash of ~~$149.1~~$169.7 million and net accounts receivable of ~~$53.2~~$65.6 million. We maintain a $25.0 million revolving credit facility, under which ~~$23.7~~we have drawn $6.5 million ~~was available~~ and ~~$1.3~~utilized $1.5 million of ~~availability was~~available credit, which we used as collateral for two stand-by letters of credit, leaving $17.0 million of available credit as of June 30, 2020. However, based on the financial covenants described under the heading “Term Loan and Revolving Credit Facilities,” we are effectively, partially restricted from utilizing the revolving credit facility.

Of our total cash and cash equivalents of $149.1 million as of June 30, 2020, $106.7 million was held by our foreign subsidiaries. The Tax Cuts and Jobs Act, or TCJA, established a modified territorial system requiring a mandatory deemed repatriation tax on undistributed earnings of foreign subsidiaries. As of June 30, 2020, we had $26.5 million of undistributed earnings in China that are not indefinitely reinvested. The remaining unremitted earnings of our foreign subsidiaries are either indefinitely reinvested or could be remitted with an immaterial tax cost.

We believe our existing cash and cash equivalents, anticipated cash flows from future operations and liquidity available from our revolving credit facility will be sufficient to meet our working capital and capital expenditure needs and debt service obligations for at least the next 12 months. Our future capital requirements may vary materially from those currently planned and will depend on many factors, including our rate of revenue growth, the timing and extent of spending on research and development efforts and other business initiatives, purchases of capital equipment to support our growth, the expansion of sales and marketing activities, expansion of our business through acquisitions or our investments in complementary products, technologies or businesses, the use of working capital to purchase additional inventory, the timing of new product introductions, market acceptance of our products and overall economic conditions. To the extent that current and anticipated future sources of liquidity are insufficient to fund our future business activities and requirements, we may be required to seek additional equity or debt financing. In the event additional financing is required from outside sources, we may not be able to raise it on terms acceptable to us or at all.2021.

Our primary source of cash from operating activities has been from cash collections from our customers. We expect cash flows from operating activities to be affected by increases and decreases in sales volumes and timing of collections, and by purchases and shipments of inventory. Our primary uses of cash from operating activities have been for personnel costs and investment in our selling, general and administrative departments and research and development. Future cash outflows from operating activities may increase as a result of further investment in research and development and selling, general and administrative requirements, and increases in personnel costs as we continue to enhance our products and introduce new products in an effort to continue to expand our business.

During the six months ended June 30, ~~2020~~2021, cash provided by operating activities was ~~$43.9~~$26.7 million, primarily resulting from our net ~~loss~~income of ~~$1.9~~$2.6 million, net non-cash adjustments of $16.0 million and net cash provided by changes in our operating assets and liabilities of ~~$29.8 million and net non-cash adjustments of $16.0~~$8.1 million. The net cash provided by changes in our operating assets and liabilities during the six months ended June 30, ~~2020~~2021 was primarily due to a ~~$40.4~~$28.4 million decrease in accounts receivable due to collections during the ~~period and~~period; a ~~$6.2~~$6.5 million ~~decrease in inventory due to sales of inventory on hand. These sources of cash were partially offset by an $7.6 million~~ increase in prepaid income taxes due primarily to a tax refund receivable from carryback of net operating loss deductions that became permitted upon the enactment of the CARES Act during the three months ended June 30, 2020; a $2.5 million decrease in accrued expenses primarily attributable to the timing of personnel-related bonus payments; an $8.4 million decrease in deferred revenue due to the timing of revenue recognition; and a ~~$1.0~~$5.4 million decrease ~~in accrued income taxes.~~

~~During the~~ ~~six months ended June 30, 2019~~, cash used in operating activities was $31.1 million, primarily resulting from our net loss of $14.0 million and net cash used in changes in our operating assets and liabilities of $21.1 million, partially offset by net non-cash adjustments of $4.1 million. The net cash used in changes in our operating assets and liabilities during the ~~six months ended June 30, 2019~~ ~~was primarily due to a $23.1 million increase~~ in inventory due to ~~anticipated growth in our business; an $5.4 million decrease in deferred revenue due to~~ the ~~timing~~high volume of ~~revenue recognition; a $7.9 million decrease in accounts payable due to~~shipments during the timing of vendor payments; a $6.4 million decrease in accrued expenses primarily attributable to the timing of personnel-related bonus payments; and a $1.9 million increase in prepaid expenses and other assets mainly related to renewals of insurance contracts.period. These sources of cash were partially offset by a ~~$24.2~~$14.5 million decrease in accounts ~~receivable~~payable due to ~~collections during~~timing of vendor payments; a $10.2 million decrease in accrued expenses due to the ~~period.~~timing of certain accrued expenses; a $3.8 million increase in prepaid expenses and other assets; and a $3.2 million decrease in accrued income taxes.

Our investing activities have consisted primarily of expenditures for lab and computer equipment and software to support the development of new ~~products and increase our manufacturing capacity to meet customer demand for our~~ products. In addition, our investing activities include expansion of and improvements to our facilities. As our business expands, we expect that we will continue to invest in these areas.

Net cash used in investing activities during the six months ended June 30, ~~2020~~2021 ~~and 2019~~ was ~~$2.7~~$2.9 million, ~~and $3.8 million, respectively,~~ consisting of purchases of property and ~~equipment.~~equipment and software licenses.

Net cash used in financing activities during the six months ended June 30, ~~2020~~2021 was ~~$5.4~~$12.8 million, consisting primarily of ~~repurchases~~debt principal repayments of ~~common stock of $3.0 million;~~$8.3 million and employee taxes paid related to net share settlement of equity awards of ~~$0.5 million; dividend and equitable adjustment payments~~$5.7 million, primarily due to the vestings of ~~$0.6 million; and debt principal repayments of $1.7 million.~~PSUs during the six months ended June 30, 2021. These payments were partially offset by proceeds from the exercise of stock options of ~~$0.4 million.~~

Net cash used in financing activities during the six months ended June 30, 2019 was $2.6 million and consisted of employee taxes paid related to net share settlement of equity awards of $1.0 million, dividend and equitable adjustment payments of $2.1 million and debt principal repayments of $1.7 million, partially offset by proceeds from the exercise of stock options of $2.2$1.2 million.

In July 2015, we entered into an $8.0 million commercial mortgage loan agreement, which matured on July 1, 2020. On July 1, 2020, we paid in full the remaining $6.5 million in unpaid principal and accrued interest under the mortgage loan with funds drawn upon our revolving credit facility. The annual interest rate on the loan was 3.5%, and the loan was repayable in 60 monthly installments of principal and interest based on a 20-year amortization schedule. The loan was secured by the land and building, which are our corporate offices, purchased in March 2015, and contained annual affirmative, negative and financial covenants, including maintenance of a minimum debt service ratio. The covenants were measured annually and we were in compliance with all the covenants of the mortgage loan as of December 31, 2019. As of June 30, 2020 and December 31, 2019, the outstanding principal amount under the mortgage loan was $6.5 million and $6.6 million, respectively. See Note 19, ~~Subsequent Events~~.

On December 20, 2016, we entered into a credit agreement with JPMorgan Chase Bank, N.A., as administrative agent, various lenders and JPMorgan Chase Bank, N.A. and Barclays Bank PLC, as joint lead arrangers and joint bookrunners, providing for:

As of June 30, ~~2020~~2021 and December 31, ~~2019,~~2020, we had borrowings of ~~$289.5~~$279.7 million and ~~$291.0~~$288.0 million, respectively, outstanding under the term loan ~~facility~~facility. As of June 30, 2021 and December 31, 2020 we ~~did not have any outstanding~~had borrowings of $6.5 million under the revolving credit ~~facility;however,~~facility, which were drawn down to fund the repayment of our commercial mortgage loan. As of June 30, 2021 and December 31, 2020, we had also used ~~$1.3~~$1.5 million of available credit under the revolving credit facility for two stand-by letters of credit, one which serves as collateral to one of our customers pursuant to a contractual ~~obligations~~obligation and one which is used as collateral for operating leases in Australia. In addition, we may, subject to certain conditions, including the consent of the administrative agent and the institutions providing such increases, increase the facilities by an unlimited amount so long as we are in compliance with specified leverage ratios, or otherwise by up to $70.0 million.

~~To fund the repayment of our commercial mortgage loan, we drew down on our revolving credit facility under our term loan agreement in the amount of $6.5 million. See Note 19,~~ ~~Subsequent Events~~.

Borrowings under the facilities bear interest at a floating rate, which can be either a Eurodollar rate plus an applicable margin or, at our option, a base rate (defined as the highest of (x) the JPMorgan Chase, N.A. prime rate, (y) the federal funds effective rate, plus one-half percent (0.50%) per annum and (z) a one-month Eurodollar rate plus 1.00% per annum) plus an applicable margin. The applicable margin for borrowings under the term loan facility is 4.00% per annum for Eurodollar rate loans (subject to a 1.00% per annum interest rate floor) and 3.00% per annum for base rate loans. ~~As a result of the completion of our initial public offering in December 2017, the~~The applicable margin for borrowings under the revolving credit facility is 1.75% per annum for Eurodollar rate loans and 0.75% per annum for base rate loans, subject to reduction based on our maintaining of specified net leverage ratios. The interest rates payable under the facilities are subject to an increase of 2.00% per annum during the continuance of any payment default.

For Eurodollar rate loans, we may select interest periods of one, three or six months or, with the consent of all relevant affected lenders, twelve months. Interest will be payable at the end of the selected interest period, but no less frequently than every three months within the selected interest period. Interest on any base rate loan is not set for any specified period and is payable quarterly. We have the right to convert Eurodollar rate loans into base rate loans and the right to convert base rate loans into Eurodollar rate loans at our option, subject, in the case of Eurodollar rate loans, to breakage costs if the conversion is effected prior to the end of the applicable interest period. As of June 30, 2021 and December 31, 2020, the interest rate on the term loans was 5.00% per annum, which was based on a three-month and six-month Eurodollar rate, respectively, at the applicable floor of 1.00% per annum plus the applicable margin of 4.00% per annum for Eurodollar rate loans. As of ~~December 31, 2019,~~June 30, 2021, the interest rate on ~~our borrowings under~~ the ~~term loan~~revolving credit facility was ~~5.80%~~2.01% per annum, which was based on a ~~one-month~~six-month Eurodollar rate of ~~1.80%~~0.26% per annum plus the applicable margin of ~~4.00%~~1.75% per annum for Eurodollar rate loans. As of December 31, 2020, the interest rate on the revolving credit facility was 2.12% per annum, which was based on the six-month Eurodollar rate of 0.37% per annum plus the applicable margin of 1.75% per annum for Eurodollar rate loans.

The term loan facility matures on December 20, 2023 and the revolving credit facility matures on December 20, 2021. The term loan facility is subject to amortization in equal quarterly installments, which commenced on March 31, 2017, of principal in an annual aggregate amount equal to 1.0% of the original principal amount of the term loans of $300.0 million, with the remaining outstanding balance payable at the date of maturity.

Voluntary prepayments of principal amounts outstanding under the term loan facility are permitted at any time; however, if a prepayment of principal is made with respect to a Eurodollar loan on a date other than the last day of the applicable interest period, we are required to compensate the lenders for any funding losses and expenses incurred as a result of the prepayment. Prior to the revolving credit facility maturity date, funds borrowed under the revolving credit facility may be borrowed, repaid and reborrowed, without premium or penalty.

In addition, we are required to make mandatory prepayments under the facilities with respect to (i) 100% of the net cash proceeds from certain asset dispositions (including casualty and condemnation events) by us or certain of our subsidiaries, subject to certain exceptions and reinvestment provisions, (ii) 100% of the net cash proceeds from the issuance or incurrence of any additional debt by us or certain of our subsidiaries, subject to certain exceptions, and (iii) 50% of our excess cash flow, as defined in the credit agreement, subject to reduction upon our achievement of specified performance targets. In accordance with these provisions, a mandatory prepayment of $6.8 million was paid on April 2, 2021.

The facilities are secured by, among other things, a first priority security interest, subject to permitted liens, in substantially all of our assets and all of the assets of certain of our subsidiaries and a pledge of certain of the stock of certain of our subsidiaries, in each case subject to specified exceptions. The facilities contain customary affirmative and negative covenants, including certain restrictions on our ability to pay dividends, and, with respect only to the revolving credit facility, a financial covenant requiring us to maintain a specified total net leverage ratio, in the event that on the last day of any fiscal quarter, we have utilized more than 30% of our borrowing capacity under the revolving credit facility (subject to certain exceptions). The term loan facility contains a cross-default provision, whereby, if repayment of borrowings under the revolving credit facility are accelerated due to a default of the net leverage ratio covenant, repayment of the outstanding term loan balance could also be accelerated. Because the financial covenant under the revolving credit facility only applies if outstanding utilization thereunder ~~exceed~~exceeds 30% of the total borrowing capacity on the last day of each fiscal quarter, this cross-default provision has the effect of limiting our ability to utilize more than 30% of our total borrowing capacity under the revolving credit facility of $25.0 million if both our net leverage ratio exceeds the maximum permitted by the agreement and we would not otherwise be able to reduce our outstanding utilization of the revolving credit facility to below the 30% testing threshold prior to the last day of any quarter. ~~Our net leverage ratio exceeded the maximum on~~As of June 30, ~~2020~~2021 and December 31, ~~2019; however, as our utilization of the revolving credit facility did not exceed the 30% testing threshold on June 30,~~ 2020, ~~and December 31, 2019,~~ we ~~were not in default of the revolving credit facility as a result of our net leverage ratio exceeding the maximum permitted amount. We~~ were in compliance with all ~~other~~ applicable covenants of the ~~facilities as of June 30, 2020 and December 31, 2019.~~facilities. We do not expect to require the use of the revolving credit facility to fund operations during the next 12 months.

Of our total cash and cash equivalents of $168.7 million as of June 30, 2021, $145.0 million was held by our foreign subsidiaries. The Tax Cuts and Jobs Act, or TCJA, established a modified territorial system requiring a mandatory deemed repatriation tax on undistributed earnings of foreign subsidiaries. As of June 30, 2021, we had $26.4 million of undistributed earnings in China that are not indefinitely reinvested. The remaining unremitted earnings of our foreign subsidiaries are either indefinitely reinvested or could be remitted with an immaterial tax cost.

On February 21, 2019, we announced a stock repurchase program under which we were authorized to repurchase up to $75.0 million of our common stock. During the six months ended June 30, 2020, we repurchased approximately 1.2 million shares for a total cost of approximately $3.0 million. During the six months ended June 30, ~~2019,~~2021 we did not repurchase any shares. As of June 30, ~~2020,~~2021, approximately $70.2 million remained authorized for repurchases of our common stock under the stock repurchase program. The stock repurchase program has no expiration date and does not require us to purchase a minimum number of shares, and we may suspend, modify or discontinue the stock repurchase program at any time without prior notice.

Our material contractual obligations include our term loan facility, revolving credit facility, ~~commercial mortgage loan,~~ operating leases and purchase agreements with our contract manufacturers and suppliers. ~~Except as discussed above regarding our repayment of the commercial mortgage loan, there~~There have been no material changes to our contractual obligations and commitments from those disclosed in our Annual Report on Form 10-K for the fiscal year ended December 31, ~~2019.~~2020.

We prepare our condensed consolidated financial statements in accordance with generally accepted accounting principles in the United States. The preparation of condensed consolidated financial statements also requires us to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues, costs and expenses and related disclosures. We base our estimates on historical experience and on various other assumptions that we believe to be reasonable under the circumstances. Actual results could differ significantly from the estimates made by our management.

Other than our policies related to ~~Derivative Instruments~~Stock-based Compensation and ~~Stock Compensation,~~our adoption of ASU 2020-06, as described in Note 2 of the above notes to the condensed consolidated financial statements, there have been no material changes to our critical accounting policies and estimates from those disclosed in our Annual Report on Form 10-K for the fiscal year ended December 31, ~~2019.~~2020.

As of June 30, ~~2020~~2021 and December 31, ~~2019,~~2020, we did not have any off-balance sheet arrangements, as defined in Item 303(a)(4)(ii) of Regulation S-K, such as the use of unconsolidated subsidiaries, structured finance, special purpose entities or variable interest entities.

Refer to the “Summary of Significant Accounting Policies” footnote within our condensed consolidated financial statements included elsewhere in this Quarterly Report on Form 10-Q for our analysis of recent accounting pronouncements that are applicable to our business.

Market risk is the risk of loss to future earnings, values or future cash flows that may result from changes in the price of a financial instrument. The value of a financial instrument may change as a result of changes in interest rates, exchange rates, commodity prices, equity prices and other market changes. We are exposed to market risk related to changes in foreign currency exchange rates and interest rates. We currently mitigate certain foreign currency exchange rate risks with derivative instruments and enter into exchange rate hedging arrangements to manage certain of the risks described below. We do not engage in foreign currency speculation.

We have accounts receivables denominated in foreign currencies, and our operations outside of the United States incur their operating expenses in foreign currencies. To date, the majority of our product sales and inventory purchases have been denominated in U.S. dollars. For our subsidiaries in Ireland and Australia, the U.S. dollar is the functional currency. For each of our other foreign subsidiaries, the functional currency is the local currency. During the six months ended June 30, ~~2020~~2021 and ~~2019,~~2020, we incurred foreign currency transaction (losses) gains of ~~$0.7~~$(1.0) million and ~~$0.4~~$0.7 million, respectively, primarily related to unrealized and realized foreign currency (losses) gains for accounts receivable denominated in foreign currencies and operating expenses that are denominated in local currencies. ~~These~~We recorded these foreign currency transaction ~~losses were recorded~~(losses) gains as a component of other income (expense), net in our condensed consolidated statements of operations and comprehensive (loss) income. We believe that a 10% change in the exchange rate between either the U.S. dollar and Euro or the U.S. dollar and Australian dollar would not materially impact our operating results or financial position.

Our foreign currency risk management ~~strategy is~~practices are principally ~~designed~~intended to mitigate the potential financial impact of changes in the value of transactions and balances denominated in foreign currencies resulting from changes in foreign currency exchange rates. WeFrom time to time we enter into cash flow hedges, which utilize foreign currency forward contracts to hedge specific forecasted transactions of our foreign subsidiaries with the goal of protecting our budgeted revenues and expenses against foreign currency exchange rate changes compared to our budgeted rates. During the three and six months ended June 30, 2020, we settled one cash flow hedge which was used to hedge specific operating cash flows denominated in Australian dollars. No cash flow hedges were settled or outstanding during the three or six months ended June 30, 2021.

Additionally, from time to time, we enter into other foreign currency forward contracts with the goal of protecting outstanding receivables denominated in currencies other than the U.S. dollar. As of June 30, ~~2020,~~2021 we had ~~one~~a currency forward contract outstanding ~~cash flow hedge contract~~with a notional amount totaling 1.1 million Euros that ~~matures~~will mature in the third quarter of ~~2020, which will be used~~2021, and we expect to continue to hedge ~~specific operating cash flows~~certain significant transactions denominated in ~~Australian dollars.~~currencies other than the U.S. dollar in the future.

The success of our foreign currency risk management program depends upon forecasts of transaction activity denominated in various currencies. To the extent that these forecasts are overstated or understated during periods of currency volatility, we could experience unanticipated foreign currency gains or losses that could have a material impact on our results of operations. Furthermore, our failure to identify new exposures and hedge against them in an effective manner may result in material foreign currency gains or losses.

Our cash and cash equivalents as of June 30, ~~2020~~2021 and December 31, ~~2019~~2020 consisted of cash maintained in FDIC-insured operating accounts as well as investments in money market mutual funds and certificates of deposit. We also have policies requiring us to invest in high-quality issuers, limit our exposure to any individual issuer, and ensure adequate liquidity. Our primary exposure to market risk for our cash equivalents is interest income sensitivity, which is primarily affected by changes in the general level of U.S. interest rates. However, we do not believe a sudden change in the interest rates for our cash equivalents would have a material impact on our financial condition, results of operations or cash flows.

We have a credit agreement that provides us with a term loan facility of $300.0 million and a revolving credit facility of up to $25.0 million in revolving credit loans and letters of credit. Borrowings under the facilities bear interest at a floating rate, which can be either a Eurodollar rate plus an applicable margin or, at our option, a base rate (defined as the highest of (x) the JPMorgan Chase, N.A. prime rate, (y) the federal funds effective rate, plus one-half percent (0.50%) per annum and (z) a one-month Eurodollar rate plus 1.00% per annum) plus an applicable margin. The applicable margin for borrowings under the term loan facility is 4.00% per annum for Eurodollar rate loans (subject to a 1.00% per annum interest rate floor) and 3.00% per annum for base rate loans. ~~As a result of the completion of our initial public offering in December 2017, the~~The applicable margin for borrowings under the revolving credit facility is 1.75% per annum for Eurodollar rate loans and 0.75% per annum for base rate loans, subject to reduction based on our maintaining of specified net leverage ratios.

As of June 30, ~~2020,~~2021, we had borrowings of ~~$289.5~~$279.7 million outstanding under the term loan facility, bearing interest at a rate of 5.00% per annum, which was based on a ~~six-month~~three-month Eurodollar rate at the applicable floor of 1.00% per annum plus

the applicable margin of 4.00% per annum for Eurodollar rate loans. Changes in interest rates could cause interest charges on our term loan facility to fluctuate. Based on the amount of borrowings outstanding as of June 30, ~~2020,~~2021, an increase or decrease of 10% in the ~~one-month~~ Eurodollar rate as of June 30, 2020 would cause pre-tax decreases to our earnings and cash flows of approximately $0.3 million per year, assuming that such rate was to remain in effect for a year. Any decrease in the one-month Eurodollar rate as of June 30, 2020 would have no impact on our earnings and cash flows, as the interest rate in effect at June 30, ~~2020~~2021 on the term loan facility was at the applicable floor of 1.00% per ~~annum.~~

Asannum and would continue to be in effect with a change of ~~June 30, 2020, we were not exposed to interest rate risk under the revolving credit facility as a result of having no outstanding borrowings under the facility.~~10%.

On July 1, 2020, we drew down onupon our revolving credit facility under our term loan agreement in the amount of $6.5 million. As noted in Note ~~11,~~10, Debt, borrowings under the revolving credit facility mature on December 21, 2021 and the applicable margin for borrowings under the revolving credit facility is 1.75% per annum for Eurodollar rate loans. The interest rate on the outstanding borrowings as of ~~July 1, 2020~~June 30, 2021, was ~~2.12%~~2.01%, which was based on a six-month Eurodollar rate of ~~0.37%~~0.26% per annum plus the applicable margin of 1.75% per annum for Eurodollar rate loans. An increase of 10% in the one-month Eurodollar rate would result in a pre-tax decrease to our earnings and cash flows of less than $0.1 million per year, assuming that such rate was to remain in effect for a year. Aor decrease of 10% in the one-month Eurodollar rate would result in a pre-tax ~~increase~~change to our earnings and cash flows of less than $0.1 million per year, assuming that such rate was to remain in effect for a year.

We do not believe that inflation has had a material effect on our ~~business.~~business to date. However, ifas more fully described in Item 2 above, global demand for the base materials utilized by our suppliers and supply chain risks could result in ~~our suppliers’ components were to significantly increase for~~significant increases in the costs of the components we purchase, ~~from our suppliers to manufacture our products, our costs could become subject to significant inflationary pressures,~~ and we may not be able to fully offset such higher costs through price increases. Our inability or failure to do so could harm our business, operating results and financial condition.

Our management, with the participation of our Chief Executive Officer and ~~Interim~~ Chief Financial Officer, has evaluated the effectiveness of our disclosure controls and procedures (as defined in Rules 13a- 15(e) and 15d- 15(e) under the Securities Exchange Act of 1934, as amended, or the Exchange Act), as of the end of the period covered by this Quarterly Report on Form 10-Q. The term “disclosure controls and procedures,” as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act, means controls and other procedures of a company that are designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported, within the time periods specified in the Securities and Exchange Commission’s rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is accumulated and communicated to the company’s management, including its principal executive and principal financial officers, as appropriate to allow timely decisions regarding required disclosure. Our management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving their objectives and our management necessarily applies its judgment in evaluating the cost-benefit relationship of possible controls and procedures. Based on the evaluation of our disclosure controls and procedures as of the end of the period covered by this Quarterly Report on Form 10-Q, our Chief Executive Officer and ~~Interim~~ Chief Financial Officer have concluded that as of such date, our disclosure controls and procedures were effective.

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

From time to time, we are a party to various litigation matters and subject to claims that arise in the ordinary course of business including, for example, patent infringement lawsuits by non-practicing entities. In addition, third parties may from time to time assert claims against us in the form of letters and other communications.

On May 29, 2019, ~~and July 3, 2019, two~~John Shen filed a putative shareholder class action ~~lawsuits, Shen v. Chen et al. and Baig v. Chen et al., were filed~~complaint in the Massachusetts Superior Court of Essex County, John Shen v. Casa Systems, Inc, et al., Civil Action No. 1977CV00787, against ~~us,~~us; certain of our current and former executive officers and ~~directors,~~directors; Summit Partners, our largest ~~investor,~~investor; and the underwriters from our December 15, 2017, initial public offering, ~~which we refer~~or IPO. On July 3, 2019, Mirza R. Baig filed a similar putative shareholder class action complaint in the Massachusetts Superior Court of Essex County, Mirza R. Baig v. Casa Systems, Inc., Civil Action No.1977CV00961, against the same defendants. Pursuant to ~~as our IPO. We collectively refer~~plaintiffs’ motion filed on July 26, 2019, and accepted September 3, 2019, the two matters were consolidated and transferred to ~~these parties as~~ the ~~defendants. These~~Business Litigation Session of the Massachusetts Superior Court, Suffolk County, John Shen v. Casa Systems, Inc, et al.,Civil Action No. 19-CV-03203-BLS2 andMirza R. Baig v. Casa Systems, Inc., Civil Action No. 19-CV-03204-BLS2. The complaints ~~purport~~purported to be brought on behalf of all purchasers of our common stock in and/or traceable to ~~our~~the IPO. The complaints generally ~~allege~~alleged that (i) each of the defendants violated Section 11 and/or Section 12(a)(2) of the Securities Act of 1933, as amended, ~~(the “Securities Act”),~~or the Securities Act, because documents related to ~~our~~the IPO, including ~~its~~our registration statement and prospectus were materially misleading by containing untrue statements of material fact and/or omitting to state material facts necessary to make such statements not misleading and (ii) the individual defendants and Summit Partners acted as controlling persons within the meaning and in violation of Section 15 of the Securities Act. On August 13, 2019, the Court consolidated these actions and referred the consolidated actions to the Business Litigation Session of the Massachusetts Superior Court (the “BLS”). On September 3, 2019, the BLS accepted the consolidated action into its session for further proceedings. On November 12, 2019, ~~Plaintiffs~~plaintiffs filed an ~~Amended~~amended shareholder class action complaint, purportedly on behalf of all purchasers of our common stock in and/or traceable to ~~our~~the IPO, which ~~contains~~contained substantially similar allegations and ~~asserts~~asserted the same claims as the two initial complaints, described above. Plaintiffs ~~seek~~sought, among other things compensatory damages, costs and expenses, including counsel and expert fees, rescission or a rescissory measure of damages, and equitable and injunctive relief. On January 14, 2020, the defendants ~~served~~filed motions to dismiss the amended complaint ~~which remain pending.~~with prejudice. On January 12, 2021, the court granted the motions to dismiss. On February 22, 2021, plaintiffs filed notice of appeal. The appeal has not yet been docketed by the appellate court, and no filing has been made.

On August 9, 2019, Donald Hook filed a ~~third~~ putative shareholder class action lawsuit in the Supreme Court of the State of New York, County of New York, Donald Hook, et al., v. Casa Systems, Inc. et al., ~~was filed~~Index No. 654548/2019, against the same defendants named in the ~~Supreme Court of New York, New York County, against us, certain of our current~~Shen and ~~former executive officers and directors, Summit Partners, and the underwriters from our IPO.~~Baig matters. The complaint purports to be brought on behalf of all purchasers of our common stock in and/or traceable to our IPO and generally alleges that (i) each of the defendants violated Section 11 and/or Section 12(a)(2) of the Securities Act ~~of 1933, as amended, or the Securities Act,~~ because documents related to our IPO including ~~its~~our registration statement and prospectus were materially misleading by containing untrue statements of material fact and/or omitting to state material facts necessary to make such statements not misleading and (ii) the individual defendants and Summit Partners acted as controlling persons within the meaning and in violation of Section 15 of the Securities Act. On November 22, 2019, ~~Plaintiff~~plaintiff filed an ~~Amended Complaint, purportedly on behalf of all purchasers of our common stock in and/or traceable to our IPO,~~amended complaint, which contains substantially similar allegations as the initial complaint, described above, and asserts claims for violations of Sections 11 and 15 of the Securities Act. Plaintiff seeks, among other things, compensatory damages, costs and expenses, including counsel and expert fees, rescission or a rescissory measure of damages, disgorgement, and equitable and injunctive relief. On January 21, 2020, the defendants ~~served~~filed motions to dismiss the amended complaint, which ~~remains pending to date.~~remain pending.

On August 13, 2019, Panther Partners, Inc. filed a ~~fourth~~ putative shareholder class action lawsuit ~~Panther Partners, Inc. v. Guo et al., was filed~~ in the Supreme Court of the State of New York, New York County,Panther Partners, Inc., et al., v. Jerry Guo et al., Index No 654585/2019, against us, certain of our current and former executive officers and directors, and the underwriters from our April 30, 2018 follow-on offering of common stock, which we refer to as our ~~Follow-on~~“Follow-on Offering.” The complaint purports to be brought on behalf of all purchasers of our common stock in our Follow-on Offering and generally alleges that (i) each of the defendants, other than Abraham Pucheril, violated Section 11 of the Securities Act, and each of the defendants violated Section 12(a)(2) of the Securities Act, because documents related to our Follow-on Offering, including our registration statement and prospectus, were materially misleading by containing untrue statements of material fact and/or omitting to state material facts necessary to make such statements not misleading and (ii) the individual defendants acted as controlling persons within the meaning and in violation of Section 15 of the Securities Act. On November 22, 2019, ~~Plaintiff~~plaintiff filed an amended ~~class action~~ complaint, ~~purportedly on behalf of all purchasers of our common stock in our Follow-on Offering,~~ which contains substantially similar allegations and asserts the same claims as the initial complaint, described above. Plaintiff seeks, among other things, compensatory damages, costs and expenses, including counsel and expert fees, rescission or a rescissory measure of damages, and equitable and injunctive relief. On January 21, 2020, the defendants served motions to dismiss the amended complaint, which remain pending.

No amounts have been accrued for any of the putative class action lawsuits referenced above as of June 30, ~~2020,~~2021, as we do not believe the likelihood of a material loss is probable. Although the ultimate outcome of these matters cannot be predicted with certainty, the resolution of any of these matters could have a material impact on our results of operations ~~if a material loss becomes probable and estimable~~ in ~~a future period.~~the period in which such matter is resolved.

In addition to the other information set forth in this Quarterly Report on Form 10-Q, you should carefully consider the factors discussed in ~~Part~~“Part I, Item 1A Risk ~~Factors~~Factors” in our Annual Report on Form 10-K for the fiscal year ended December 31, ~~2019,~~2020, or the ~~2019~~2020 10-K, which could materially affect our business, financial condition or future results. ~~As a supplement to~~Other than the updated risk factors identified in the 2019 10-K, below we have revised one of our risk factors (regarding a recent decision of the Delaware Supreme Court affecting the provision in our restated certificate of incorporation that provides that the federal district courts of the United States are the sole and exclusive forum for the resolution of any complaint asserting a cause of action arising under the Securities Act) and set forth a new risk factor (regarding the COVID-19 pandemic). The COVID-19 pandemic has heightened, and in some cases manifested, certain of the risks we normally face in operating our business, including those disclosed in the 2019 10-K, and the risk factor disclosure in the 2019 10-K is qualified by the information relating to COVID-19 that is described ~~in this Quarterly Report on Form 10-Q, including the new risk factor set forth below. Other than as provided~~ below, there have been no material changes from the risk factors previously disclosed in the ~~2019 10-K..~~2020 10-K.

The coronavirus outbreak could negatively impact our operations and have an adverse effect on our revenues and/or results of operations.

The ~~emergence of the coronavirus disease in 2019, or~~ COVID-19 ~~around the world, and particularly in the United States and China,~~pandemic and the accompanying responses of governments and businesses to the pandemic continue to present various risks to us, not all of which we are able to fully evaluate or even to foresee at the current ~~time.~~time and could have a material effect upon the estimates and judgments relied upon by management. While the COVID-19 pandemic did not ~~materially~~significantly adversely affect our financial results, business operations or liquidity induring the ~~quarter~~three and six months ended June 30, ~~2020,~~2021, economic and health conditions in the United States and across most of the globe changed rapidly during the period and are continuing to change after the end of the quarter. Globally, ~~to date,~~ all aspects of our business remain fully ~~operational,~~operational. The pandemic has led to increased demand for certain of our ~~work from home contingency plans~~products, resulting in increased order volumes that have created additional pressure on our supply chain. In addition, certain of our products utilize components, for which there has been ~~implemented~~increased global demand. As a result, we have begun to see shortages of supply that have increased the likelihood of an adverse impact on our future revenue and ~~are operating successfully,~~gross margins and ~~we are working~~ability to fill orders for customers in a timely manner. We continue to work with our supply chain and contract manufacturers, as well as our customers, to ~~ensure continued availability~~minimize the possible extent of ~~all anticipated inventory requirements.~~such impacts. However, at this time we are neither able to estimate the extent of these impacts nor predict whether our efforts to minimize or contain them will be successful. We intend to continue to monitor our business very closely for any effects of COVID-19 for as long as ~~necessary on an ongoing basis.~~necessary.

Due to the above circumstances and as described generally in ~~this~~our 2020 Annual Report on Form ~~10-Q,~~10-K, our results of operations for the three and six months ended June 30, 2021, and the year ended December 31, 2020, are not necessarily indicative of the results to be expected ~~for the full year.~~in future periods. Management cannot predict the full impact of the COVID-19 pandemic on our sales channels, supply chain, manufacturing and distribution, or on economic conditions generally, including the effects on our current and potential customers, who may curtail spending on investments in current and/or new technologies, delay new equipment evaluations and trials, and possibly delay payments based on liquidity concerns, all of which could have a material impact on our business in the future. Similarly, our supply chain and our contract manufacturers could be affected, which could cause disruptions to our ability to meet customer ~~demand.~~demand or delivery schedules. For ~~example, while we experienced increased order volumes for certain of our products during~~ the three and six months ended June 30, ~~2020,~~2021, we ~~are beginning to~~did see ~~potential~~certain delays in the supply chain that ~~may impact future~~adversely impacted a small number of delivery schedules. If COVID-19 were to continue to cause such impacts in the future, there could likely be a material

adverse impact on our financial results, liquidity and capital resource needs. The use of our revolving line of credit is currently restricted based on the financial covenants we are subject to, and Covid-19 has further created significant uncertainty within capital markets such that access to sufficient additional capital resources, if needed, may not be available. This uncertainty makes it challenging for management to estimate the future performance of our businesses, particularly over the near to medium term. However, the impact of COVID-19 could have a material adverse impact on our results of operations over the near to medium term.

~~Risks Related~~The coronavirus outbreak has resulted in an increase in demand for certain of our solutions, which may subside or decrease when the pandemic ends.

The pandemic, and resulting lockdowns, has resulted in an increase in demand for residential broadband services, which has in turn lead to ~~Our Common Stock~~

~~Our restated certificate~~an increase in demand for certain of ~~incorporation provides~~our solutions, including our fiber extension home network connection devices and our Fixed Wireless Access CPE devices. We also saw a shift in demand from our cable customers toward more I-CCAP chassis each quarter. That increase in demand contributed to our strong revenue performance in 2020. We cannot guarantee that the ~~Court of Chancery~~heightened demand for residential broadband services will continue for the duration of the ~~State of Delaware~~pandemic or after the pandemic ends. We similarly cannot guarantee that even to the extent the heightened demand for residential broadband services continues that we will ~~be the exclusive forum~~continue to see heightened demand for ~~substantially all disputes between us and~~ our ~~stockholders. Our restated certificate of incorporation further provides that the federal district courts of the United States are the sole and exclusive forum~~solutions. A decrease in demand for ~~the resolution of any complaint asserting~~our solutions could have a cause of action arising under the Securities Act. These choice of forum provisions could limit our stockholders’ ability to obtain a more favorable judicial forum for disputes with us or our directors, officers or employees.

~~Our restated certificate of incorporation provides that the Court of Chancery of the State of Delaware is the exclusive forum for any derivative action or proceeding brought~~material adverse impact on our behalf; any action asserting a breach of fiduciary duty; any action asserting a claim against us arising pursuant to the Delaware General Corporation Law, our certificate of incorporation or our bylaws; or any action asserting a claim against us that is governed by the internal affairs doctrine. We do not intend to have this choice of forum provision apply to,revenue and ~~this choice of forum provision will not apply to, actions arising under the Securities Exchange Act of 1934, as amended, or the Exchange Act.~~

Our restated certificate of incorporation further provides that, unless we consent in writing to the selection of an alternative forum, the federal district courts of the United States shall, to the fullest extent permitted by law, be the sole and exclusive forum for the resolution of any complaint asserting a cause of action arising under the Securities Act of 1933, as amended, or the Securities Act. On December 19, 2018, the Delaware Court of Chancery, in ~~Sciabacucchi v. Salzberg, et al~~., C.A. No. 2017-0931-JTL (Del. Ch. Dec. 19, 2018), held that such federal forum selection provisions are invalid under Delaware law. Upon appeal, on March 18, 2020, the Delaware Supreme Court reversed the Court of Chancery’s judgment in all respects, upholding the facial validity of such federal forum selection provisions.

These choice of forum provisions may limit a stockholder’s ability to bring a claim in a judicial forum that it finds favorable for disputes with us or our directors, officers or other employees, which may discourage such lawsuits against us and our directors, officers and other employees. Alternatively, if a court were to find the choice of forum provisions contained in our certificate of incorporation to be inapplicable or unenforceable in an action, we may incur additional costs associated with resolving such action in other jurisdictions, which could materially adversely affect our business, financial condition, results of ~~operations and prospects.~~operations.

On December 14, 2017, the Securities and Exchange Commission, or the SEC, declared our registration statement on Form S-1 (File No. 333-221658) for our initial public offering, or IPO, effective. The net offering proceeds to us from the ~~offering,~~IPO, after deducting underwriting discounts of $6.3 million and offering expenses payable by us totaling $4.1 million, were approximately $79.3 million. No offering discounts, commissions or expenses were paid directly or indirectly to any of our directors or officers (or their associates) or persons owning 10.0% or more of any class of our equity securities or to any other affiliates. There has been no material change in the planned use of proceeds from our ~~initial public offering~~IPO as described in our final prospectus filed with the SEC on December 15, 2017 pursuant to Rule 424(b)(4). As of June 30, ~~2020,~~2021, we had not used any of the net offering proceeds and we have invested the proceeds into an investment portfolio with the primary objective of preserving principal and providing liquidity without significantly increasing ~~risk~~risk.

The following table sets forth information with respect to repurchases of shares of our common stock during the three-month period ended June 30, ~~2020:~~2021:

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.

Delaware		75-3108867
(State or other jurisdiction of incorporation or organization)		(I.R.S. Employer Identification No.)
100 Old River Road Andover, Massachusetts		01810
(Address of principal executive offices)		(Zip Code)

Title of each class	Trading Symbol	Name of each exchange on which registered
Common Stock, $0.001 par value per share	CASA	The Nasdaq Stock Market LLC

		Page
PART I.	FINANCIAL INFORMATION	3
Item 1.	Financial Statements	3
	Condensed Consolidated Financial Statements (Unaudited)	3
	Condensed Consolidated Balance Sheets as of June 30, ~~2020~~2021 and December 31, ~~2019~~2020	3
	Condensed Consolidated Statements of Operations and Comprehensive (Loss) Income for the Three and Six months ended June 30, ~~2020~~2021 and ~~2019~~2020	4
	Condensed Consolidated Statements of Stockholders' Equity for the Three and Six months ended June 30, ~~2020~~2021 and ~~2019~~2020	5
	Condensed Consolidated Statements of Cash Flows for the Six months ended June 30, ~~2020~~2021 and ~~2019~~2020	7
	Notes to Unaudited Condensed Consolidated Financial Statements	8
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	3026
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	4237
Item 4.	Controls and Procedures	4338
PART II.	OTHER INFORMATION	4439
Item 1.	Legal Proceedings	4439
Item 1A.	Risk Factors	4540
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	4641
Item 5.	Other Information	41
Item 6.	Exhibits	4742
Signatures		4843

	Purchase Price Allocation
Assets acquired
Fair value of tangible assets:
Accounts receivable	$	18,142
Inventory		24,138
Prepaid expenses and other current assets		2,240
Property, plant and equipment		8,010
Deferred tax assets		365
Other assets		13
Goodwill		50,347
Identifiable intangible assets		44,000
Total assets acquired	$	147,255
Liabilities assumed
Accounts payable	$	(9,719	)
Accrued expenses		(13,178	)
Accrued income taxes		(140	)
Deferred tax liabilities		(10,791	)
Current portion of long-term debt		(3,507	)
Other liabilities		(489	)
Total liabilities assumed	$	(37,824	)
Net assets acquired	$	109,431

	Amount		Estimated Useful Life
Net tangible assets	$	15,084		—
Identifiable intangible assets:
Developed technology		25,000	7 years
Customer relationships		18,000	10 years
Trade name		1,000	3 years
Goodwill		50,347		—
Total purchase price	$	109,431

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

	Accounts Receivable, Net
	June 30, ~~2020~~ 2021			December 31, ~~2019~~ 2020
Customer A	*	24	%	*			11	%
Customer C	*	10	%	*			14	%
Customer F	*				1917	%
~~Customer G~~

~~Level 1—~~	~~Quoted prices in active markets for identical assets and liabilities.~~

~~Level 2—~~	Observable inputs (other than Level 1 quoted prices), such as quoted prices in active markets for similar assets or liabilities at the measurement date; quoted prices in markets that are not active for identical or similar assets and liabilities; or other inputs that are observable or can be corroborated by observable market data.

~~Level 3—~~	~~Unobservable inputs that involve management judgment and are supported by little or no market activity, including pricing models, discounted cash flow methodologies and similar techniques.~~

Year Ending December 31,
2021	$	8,000
2022		3,000
2023		275,225
Thereafter		—
	$	286,225

Year Ending December 31,
2020	$	7,983
2021		3,000
2022		3,000
2023		3,000
2024		279,000
Thereafter		—
	$	295,983

	Cash Dividend Declared				Dividends Paid
	per Share Type				Six Months Ended
Dividend Declaration Date	Common		Series B and Series C Convertible Preferred		June 30, 2020		June 30, 2019
November 30, 2017	$	0.5802	$	5.8020	$	—	$	865
May 10, 2017		1.1774		11.7744		—		—
December 27, 2016		2.3306		23.3058		—		—
June 17, 2016		0.5891		5.8910		—		—
November 30, 2014		0.3835		3.8346		—		—
Total dividends paid					$	—	$	865

	Number of Shares			Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term		Aggregate Intrinsic Value
						(in years)
Outstanding at January 1, 2020		8,250		$	7.73		5.65	$	4,235
Granted		70			3.74
Exercised		(191	)		2.14
Forfeited		(567	)		8.65
Outstanding at June 30, 2020		7,562		$	7.77		5.20	$	4,018
Options exercisable at June 30, 2020		6,659		$	7.04		4.83	$	3,964
Vested or expected to vest at June 30, 2020		7,520		$	7.75		5.18	$	4,013

		~~Grant Date Assumptions~~
~~Risk-free interest rate~~		~~1.2%~~
~~Volatility~~		~~70.0%~~
~~Dividend yield~~		~~0.0%~~
~~Cost of equity~~		~~11.0%~~

Year Ending December 31,
2020	$	1,261
2021		1,454
2022		113
2023		5
2024		—
Thereafter		—
	$	2,833

Period	Total Number of Shares Purchased		Average Price Paid per Share (1)		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs (2)		Approximate Dollar Value of Shares that May Yet Be Purchased Under the Plans or Programs
	(In thousands)				(In thousands)		(In thousands)
April 1 - April 30, 2020		11	$	3.00		11	$	70,208
May 1 - May 31, 2020		—	$	—		—	$	70,208
June 1 - June 30, 2020		—	$	—		—	$	70,208

Exhibit Number		Description

~~2.1~~		Deed, dated as of February 21, 2019, between Casa Systems, Inc. and NetComm Wireless Limited (incorporated by reference to Exhibit 10.1 to the Registrant’s Current Report on Form 8-K (File No. 001-38324) filed on February 21, 2019)

3.1		Restated Certificate of Incorporation of the Registrant (incorporated by reference to Exhibit 3.1 to the Registrant’s Current Report on Form 8-K (File No. 001-38324) filed on December 19, 2017)

3.2		By-laws of the Registrant (incorporated by reference to Exhibit 3.2 to the Registrant’s Current Report on Form 8-K (File No. 001-38324) filed on December 19, 2017)

~~31.1~~31.1*		Certification of Principal Executive Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

~~31.2~~31.2*		Certification of Principal Financial Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

32.1*		Certification of Principal Executive Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

32.2*		Certification of Principal Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

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	CASA SYSTEMS, INC.

Date: July ~~31, 2020~~30, 2021	By:	/s/ Jerry Guo
		Jerry Guo
		President, Chief Executive Officer and Chairman (Principal Executive Officer)

Date: July ~~31, 2020~~30, 2021	By:	/s/ Scott Bruckner
		Scott Bruckner
		~~Interim~~ Chief Financial Officer (Principal Financial Officer)