10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 10-Q

(Mark One)

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

For the quarterly period ended September 30, 2022

OR

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

For the transition period from ___________to ___________

Commission File Number: 001-39293

Inari Medical, Inc.

(Exact Name of Registrant as Specified in its Charter)

Delaware	45-2902923
( State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
6001 Oak Canyon, Suite 100 Irvine, California	92618
(Address of principal executive offices)	(Zip Code)

Registrant’s telephone number, including area code: (877) 923-4747

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

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common stock, $0.001 par value per share	NARI	The Nasdaq Global Select Market

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

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

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

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

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

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

As of October 28, 2022, the registrant had 53,652,850 shares of common stock, $0.001 par value per share, outstanding.

Table of Contents

		Page
PART I.	FINANCIAL INFORMATION
Item 1.	Condensed Consolidated Financial Statements (Unaudited)	3
	Condensed Consolidated Balance Sheets	3
	Condensed Consolidated Statements of Operations and Comprehensive Income (Loss)	4
	Condensed Consolidated Statements of Stockholders’ Equity	5
	Condensed Consolidated Statements of Cash Flows	7
	Notes to Unaudited Condensed Consolidated Financial Statements	8
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	20
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	24
Item 4.	Controls and Procedures	24
PART II.	OTHER INFORMATION
Item 1.	Legal Proceedings	26
Item 1A.	Risk Factors	26
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	26
Item 3.	Defaults Upon Senior Securities	26
Item 4.	Mine Safety Disclosures	26
Item 5.	Other Information	26
Item 6.	Exhibits	27
Signatures		28

i

CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

This Quarterly Report on Form 10-Q contains forward-looking statements. All statements other than statements of historical facts contained in this Quarterly Report are forward-looking statements. In some cases, you can identify forward-looking statements by terms such as “may,” “will,” “would,” “should,” “expect,” “plan,” “anticipate,” “could,” “intend,” “target,” “project,” “contemplate,” “believe,” “estimate,” “predict,” “potential” or “continue” or the negative of these terms or other similar expressions, although not all forward-looking statements contain these words. All statements other than statements of historical fact contained in this Quarterly Report, including without limitation statements regarding our business model and strategic plans for our products, technologies and business, including our implementation thereof, the impact on our business, financial condition and results of operations from macroeconomic conditions, the ongoing and global COVID-19 pandemic, or any other pandemic, epidemic or outbreak of an infectious disease in the United States or worldwide, the timing of and our ability to obtain and maintain regulatory approvals, our commercialization, marketing and manufacturing capabilities and strategy, our expectations about the commercial success and market acceptance of our products, the sufficiency of our cash, cash equivalents and short-term investments, and the plans and objectives of management for future operations and capital expenditures are forward-looking statements.

The forward-looking statements in this Quarterly Report are only predictions and are based largely on our current expectations and projections about future events and trends that we believe may affect our financial condition, results of operations, business strategy, short-term and long-term business operations and objectives, and financial needs. These forward-looking statements speak only as of the date of this Quarterly Report and are subject to a number of known and unknown risks, uncertainties, and assumptions, including those described under the sections in this Quarterly Report entitled “Risk Factors” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and elsewhere in this Quarterly Report. Moreover, we operate in a very competitive and rapidly changing environment. New risks emerge from time to time. It is not possible for our management to predict all risks, nor can we assess the impact of all factors on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statements we may make. In light of these risks, uncertainties, and assumptions, the future events and trends discussed in this Quarterly Report may not occur and actual results could differ materially and adversely from those anticipated or implied in the forward-looking statements.

Because forward-looking statements are inherently subject to risks and uncertainties, some of which cannot be predicted or quantified, you should not rely upon these forward-looking statements as predictions of future events. The events and circumstances reflected in the forward-looking statements may not be achieved or occur. Although we believe that the expectations reflected in the forward-looking statements are reasonable, we cannot guarantee future results, performance, or achievements. 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, changed circumstances or otherwise. We intend the forward-looking statements contained in this Quarterly Report to be covered by the safe harbor provisions for forward-looking statements contained in Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”).

ii

PART I—FINANCIAL INFORMATION

Item 1. Condensed Consolidated Financial Statements (Unaudited).

Inari Medical, Inc.

Condensed Consolidated Balance Sheets

(in thousands, except share data and par value)

(unaudited)

	September 30, 2022			December 31, 2021
Assets
Current assets
Cash and cash equivalents	$	83,528		$	92,752
Short-term investments in debt securities		235,705			83,348
Accounts receivable, net		54,059			42,351
Inventories, net		29,670			21,053
Prepaid expenses and other current assets		7,609			5,694
Total current assets		410,571			245,198
Property and equipment, net		21,191			16,471
Operating lease right-of-use assets		49,951			44,909
Deposits and other assets		6,106			981
Long-term investments in debt securities		—			3,983
Total assets	$	487,819		$	311,542
Liabilities and Stockholders' Equity
Current liabilities
Accounts payable	$	6,035		$	6,541
Payroll-related accruals		28,052			24,433
Accrued expenses and other current liabilities		7,668			10,737
Operating lease liabilities, current portion		588			802
Total current liabilities		42,343			42,513
Operating lease liabilities, noncurrent portion		30,377			28,404
Other long-term liability		—			1,416
Total liabilities		72,720			72,333
Commitments and contingencies (Note 7)
Stockholders' equity
Preferred stock, $0.001 par value, 10,000,000 shares authorized, no shares    issued and outstanding as of September 30, 2022 and December 31, 2021		—			—
Common stock, $0.001 par value, 300,000,000 shares    authorized as of September 30, 2022 and December 31, 2021; 53,595,277     and 50,313,452 shares issued and outstanding as of September 30, 2022 and    December 31, 2021, respectively		53			50
Additional paid in capital		457,043			257,144
Accumulated other comprehensive loss		(945	)		(402	)
Accumulated deficit		(41,052	)		(17,583	)
Total stockholders' equity		415,099			239,209
Total liabilities and stockholders' equity	$	487,819		$	311,542

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

3

Inari Medical, Inc.

Condensed Consolidated Statements of Operations and Comprehensive Income (Loss)

(in thousands, except share and per share data)

(unaudited)

	Three Months Ended September 30,						Nine Months Ended September 30,
	2022			2021			2022			2021
Revenue	$	96,204		$	72,916		$	275,700		$	193,766
Cost of goods sold		11,064			7,040			31,378			16,477
Gross profit		85,140			65,876			244,322			177,289
Operating expenses
Research and development		19,105			12,499			53,809			32,292
Selling, general and administrative		75,833			56,104			212,721			135,899
Total operating expenses		94,938			68,603			266,530			168,191
(Loss) income from operations		(9,798	)		(2,727	)		(22,208	)		9,098
Other income (expense)
Interest income		618			27			882			130
Interest expense		(74	)		(73	)		(220	)		(220	)
Other income (expense)		(59	)		30			169			(4	)
Total other income (expenses)		485			(16	)		831			(94	)
(Loss) income before income taxes		(9,313	)		(2,743	)		(21,377	)		9,004
Provision for income taxes		840			61			2,092			271
Net (loss) income	$	(10,153	)	$	(2,804	)	$	(23,469	)	$	8,733
Other comprehensive income (loss)
Foreign currency translation adjustments		(406	)		(146	)		(814	)		(269	)
Unrealized gain on available-for-sale debt securities		644			7			271			19
Total other comprehensive income (loss)		238			(139	)		(543	)		(250	)
Comprehensive (loss) income	$	(9,915	)	$	(2,943	)	$	(24,012	)	$	8,483
Net (loss) income per share
Basic	$	(0.19	)	$	(0.06	)	$	(0.45	)	$	0.18
Diluted	$	(0.19	)	$	(0.06	)	$	(0.45	)	$	0.16
Weighted average common shares used to compute net (loss)     income per share
Basic		53,491,625			50,001,996			52,552,662			49,664,037
Diluted		53,491,625			50,001,996			52,552,662			55,511,061

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

4

Inari Medical, Inc.

Condensed Consolidated Statements Stockholders’ Equity

(in thousands, except share data)

(unaudited)

	Common Stock				Additional Paid In			Accumulated Other Comprehensive			Accumulated			Total Stockholders'
	Shares		Amount		Capital			Income (Loss)			Deficit			Equity
Balance, December 31, 2021		50,313,452	$	50	$	257,144		$	(402	)	$	(17,583	)	$	239,209
Options exercised for   common stock		322,882		1		344			—			—			345
Shares issued under Employee   Stock Purchase Plan		54,808		—		3,427			—			—			3,427
Issuance of common stock upon   vesting of restricted stock units,   net of shares withheld for taxes		31,763		—		(1,624	)		—			—			(1,624	)
Issuance of common stock in   public offering, net of   issuance costs of $11.9 million		2,300,000		2		174,392			—			—			174,394
Share-based compensation   expense		—		—		6,555			—			—			6,555
Other comprehensive loss		—		—		—			(365	)		—			(365	)
Net loss		—		—		—			—			(3,129	)		(3,129	)
Balance, March 31, 2022		53,022,905		53		440,238			(767	)		(20,712	)		418,812
Options exercised for   common stock		228,313		—		156			—			—			156
Issuance of common stock upon   vesting of restricted stock units,   net of shares withheld for taxes		54,607		—		(1,751	)		—			—			(1,751	)
Share-based compensation   expense		—		—		7,164			—			—			7,164
Other comprehensive loss		—		—		—			(416	)		—			(416	)
Net loss		—		—		—			—			(10,187	)		(10,187	)
Balance, June 30, 2022		53,305,825		53		445,807			(1,183	)		(30,899	)		413,778
Options exercised for common stock		167,102		—		109			—			—			109
Issuance of common stock upon   vesting of restricted stock units,   net of shares withheld for taxes		43,643		—		(1,224	)		—			—			(1,224	)
Shares issued under Employee   Stock Purchase Plan		78,707		—		4,995			—			—			4,995
Share-based compensation expense		—		—		7,356			—			—			7,356
Other comprehensive income		—		—		—			238			—			238
Net loss		—		—		—			—			(10,153	)		(10,153	)
Balance, September 30, 2022		53,595,277	$	53	$	457,043		$	(945	)	$	(41,052	)	$	415,099

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

5

Inari Medical, Inc.

Condensed Consolidated Statements Stockholders’ Equity

(in thousands, except share data)

(unaudited)

	Common Stock				Additional Paid In			Accumulated Other Comprehensive			Accumulated			Total Stockholders'
	Shares		Amount		Capital			Income (Loss)			Deficit			Equity
Balance, December 31, 2020		49,251,614	$	49	$	227,624		$	4		$	(27,423	)	$	200,254
Options exercised for   common stock		296,019		1		380			—			—			381
Shares issued under Employee   Stock Purchase Plan		36,881		—		1,882			—			—			1,882
Issuance of common stock upon   vesting of restricted stock units,   net of shares withheld for taxes		901		—		(49	)		—			—			(49	)
Share-based compensation   expense		—		—		3,836			—			—			3,836
Other comprehensive loss		—		—		—			(162	)		—			(162	)
Net income		—		—		—			—			7,469			7,469
Balance, March 31, 2021		49,585,415		50		233,673			(158	)		(19,954	)		213,611
Options exercised for common stock		213,605		—		193			—			—			193
Issuance of common stock upon   vesting of restricted stock units,   net of shares withheld for taxes		29,809		—		(706	)		—			—			(706	)
Share-based compensation expense		—		—		4,604			-			—			4,604
Other comprehensive income		—		—		—			51			—			51
Net income		—		—		—			—			4,068			4,068
Balance, June 30, 2021		49,828,829		50		237,764			(107	)		(15,886	)		221,821
Options exercised for common stock		150,662		—		159			—			—			159
Shares issued under Employee   Stock Purchase Plan		48,168		—		3,676			—			—			3,676
Issuance of common stock upon   vesting of restricted stock units,   net of shares withheld for taxes		116,931		—		(842	)		—			—			(842	)
Share-based compensation expense		—		—		12,499			—			—			12,499
Other comprehensive income (loss)		—		—		—			(139	)		—			(139	)
Net loss		—		—		—			—			(2,804	)		(2,804	)
Balance, September 30, 2021		50,144,590	$	50	$	253,256		$	(246	)	$	(18,690	)	$	234,370

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

6

Inari Medical, Inc.

Condensed Consolidated Statements of Cash Flows

(in thousands)

(unaudited)

	Nine Months Ended September 30,
	2022			2021
Cash flows from operating activities
Net (loss) income	$	(23,469	)	$	8,733
Adjustments to reconcile net (loss) income to net cash (used in) provided by   operating activities:
Depreciation		3,430			2,108
Amortization of deferred financing costs		108			108
Amortization of right-of-use assets		1,799			537
Share-based compensation expense		21,075			20,939
Allowance for credit losses, net		341			(22	)
Loss on disposal of fixed assets		23			—
Changes in:
Accounts receivable		(12,220	)		(10,898	)
Inventories		(8,706	)		(8,924	)
Prepaid expenses, deposits and other assets		(1,537	)		(4,525	)
Accounts payable		(441	)		2,042
Payroll-related accruals, accrued expenses and other liabilities		(562	)		12,919
Operating lease liabilities		(565	)		(574	)
Lease prepayments for lessor's owned leasehold improvements		(4,503	)		(11,964	)
Net cash (used in) provided by operating activities		(25,227	)		10,479
Cash flows from investing activities
Purchases of property and equipment		(8,173	)		(10,927	)
Purchases of marketable securities		(332,103	)		(105,438	)
Maturities of marketable securities		184,000			68,000
Purchases of other investments		(5,693	)		—
Net cash used in investing activities		(161,969	)		(48,365	)
Cash flows from financing activities
Proceeds from issuance of common stock in public offering, net of    issuance costs of $11.9 million		174,394			—
Proceeds from issuance of common stock under employee stock purchase plan		8,422			5,558
Proceeds from exercise of stock options		610			732
Payment of taxes related to vested restricted stock units		(4,599	)		(1,597	)
Net cash provided by financing activities		178,827			4,693
Effect of foreign exchange rate on cash and cash equivalents		(855	)		(266	)
Net decrease in cash		(9,224	)		(33,459	)
Cash and cash equivalents beginning of period		92,752			114,617
Cash and cash equivalents end of period	$	83,528		$	81,158
Supplemental disclosures of cash flow information:
Cash paid for income taxes	$	3,085		$	271
Cash paid for interest	$	112		$	113
Noncash investing and financing:
Lease liabilities arising from obtaining new right-of-use assets	$	2,334		$	28,648

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

7

Inari Medical, Inc.

Notes to Unaudited Condensed Consolidated Financial Statements

1. Organization

Description of Business

Inari Medical, Inc. (the “Company”) was incorporated in Delaware in July 2011 and is headquartered in Irvine, California. The Company develops, manufactures, markets and sells devices for the interventional treatment of venous diseases.

2. Summary of Significant Accounting Policies

COVID-19

The global healthcare system continues to face an unprecedented challenge as a result of the novel coronavirus, or COVID-19, situation and its impact. COVID-19 may continue to have an adverse impact on significant aspects of the Company and the business, including the demand for products, business operations, and the ability to research and develop and bring to market new products and services. To the extent individuals and hospital systems de-prioritize, delay or cancel deferrable medical procedures as a result of COVID-19, staffing or resource issues, or otherwise, the Company’s business, cash flows, financial condition and results of operations may continue to be negatively affected.

The Company continues to focus its efforts on the health and safety of patients, healthcare providers and employees, while executing its mission of transforming lives of venous thromboembolism ("VTE") patients. However, the COVID-19 pandemic may continue to negatively impact the Company's 2022 performance.

Basis of Presentation

The accompanying condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”).

The interim condensed consolidated balance sheet as of September 30, 2022, the condensed consolidated statements of operations and comprehensive income (loss), stockholders’ equity, and cash flows for the three and nine months ended September 30, 2022 and 2021 are unaudited. The unaudited interim condensed consolidated financial statements have been prepared on the same basis as the annual consolidated financial statements and reflect, in the opinion of management, all adjustments of a normal and recurring nature that are necessary for the fair presentation of the Company’s consolidated financial position as of September 30, 2022 and its consolidated results of operations and cash flows for the three and nine months ended September 30, 2022 and 2021. The financial data and the other financial information disclosed in the notes to the condensed consolidated financial statements related to the three and nine months ended September 30, 2022 and 2021 are also unaudited. The condensed consolidated results of operations for any interim period are not necessarily indicative of the results to be expected for the full year or for any other future annual or interim period. The condensed consolidated balance sheet as of December 31, 2021 included herein was derived from the audited financial statements as of that date. These interim condensed consolidated financial statements should be read in conjunction with our audited financial statements included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2021 filed on February 23, 2022.

Principles of Consolidation

The condensed consolidated financial statements include the Company and its wholly owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.

Management Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Significant estimates and assumptions made in the accompanying consolidated financial statements may include, but are not limited to, collectability of receivables, recoverability of long-lived assets, valuation of inventory, operating lease right-of-use ("ROU") assets and liabilities, other investments, fair value of stock options, recoverability of net deferred tax assets and related valuation allowance, and certain accruals. Estimates are based on historical experience and on various assumptions that the Company believes are reasonable under current circumstances. Actual results could differ materially from those estimates. Management periodically evaluates such estimates and assumptions, and they are adjusted prospectively based upon such periodic evaluation.

8

Inari Medical, Inc.

Notes to Unaudited Condensed Consolidated Financial Statements

Revenue Recognition

The Company recognizes revenue in accordance with ASC 606, Revenue from Contracts with Customers. Under ASC 606, revenue is recognized when a customer obtains control of promised goods or services, in an amount that reflects the consideration which the Company expects to receive in exchange for those goods or services. To determine revenue recognition for arrangements that are within the scope of ASC 606, the Company performs the following five steps: (i) identify the contract(s) with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when (or as) the entity satisfies a performance obligation.

The Company sells its products primarily to hospitals in the United States utilizing the Company’s direct sales force. The Company recognizes revenue for arrangements where the Company has satisfied its performance obligation of shipping or delivering the product. For sales where the Company’s sales representative hand-deliver products directly to the hospitals, control of the products transfers to the customers upon such hand delivery. For sales where products are shipped, control of the products transfers either upon shipment or delivery of the products to the customer, depending on the shipping terms and conditions. Revenue from product sales is comprised of product revenue, net of product returns, administrative fees and sales rebates.

Performance Obligation—The Company has revenue arrangements that consist of a single performance obligation, the shipping or delivery of the Company’s products. The satisfaction of this performance obligation occurs with the transfer of control of the Company’s product to its customers, either upon shipment or delivery of the product.

Revenue is measured as the amount of consideration the Company expects to receive in exchange for transferring goods. The amount of revenue recognized is based on the transaction price, which represents the invoiced amount, net of administrative fees and sales rebates, where applicable. The Company provides a standard 30-day unconditional right of return period. The Company establishes estimated provisions for returns at the time of sale based on historical experience. Historically, the actual product returns have been immaterial to the Company’s consolidated financial statements.

As of September 30, 2022 and December 31, 2021, the Company recorded $987,000 and $448,000, respectively, of unbilled receivables, which are included in accounts receivable, net, in the accompanying consolidated balance sheets.

Revenue for ClotTriever and FlowTriever products as a percentage of total revenue was derived as follow:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2022			2021			2022			2021
ClotTriever		31	%		30	%		32	%		33	%
FlowTriever		69	%		70	%		68	%		67	%

The Company offers payment terms to its customers of less than three months and these terms do not include a significant financing component. The Company excludes taxes assessed by governmental authorities on revenue-producing transactions from the measurement of the transaction price.

The Company offers its standard warranty to all customers. The Company does not sell any warranties on a standalone basis. The Company’s warranty provides that its products are free of material defects and conform to specifications, and includes an offer to repair, replace or refund the purchase price of defective products. This assurance does not constitute a service and is not considered a separate performance obligation. The Company estimates warranty liabilities at the time of revenue recognition and records it as a charge to cost of goods sold.

Costs associated with product sales include commissions and are recorded in selling, general and administrative ("SG&A") expenses. The Company applies the practical expedient and recognizes commissions as an expense when incurred because the amortization period is less than one year.

Other Investments

In March 2022, the Company made investments in certain privately held companies, with no readily determinable fair value. The Company measures these investments at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for an identical or similar investments. The Company will monitor the information that becomes available from time to time and adjust the carrying values of these investments if there are identified events or changes in circumstances that have a significant adverse effect on the fair values. As of September 30, 2022, total other investments of $5.7 million was included in deposits and other assets on the condensed consolidated balance sheets with no impairment identified.

9

Inari Medical, Inc.

Notes to Unaudited Condensed Consolidated Financial Statements

3. Fair Value Measurements

The following tables summarize the Company’s financial assets and liabilities measured at fair value on a recurring basis by level within the fair value hierarchy as of September 30, 2022 and December 31, 2021 (in thousands):

	September 30, 2022
	Level 1		Level 2		Level 3		Aggregate Fair Value
Financial Assets
Cash and cash equivalents:
Money market mutual funds	$	21,283	$	—	$	—	$	21,283
U.S. Treasury securities		3,979		—		—		3,979
Corporate debt securities and commercial paper		—		15,973		—		15,973
Total included in cash and cash equivalents		25,262		15,973		—		41,235
Investments:
U.S. Treasury securities		178,462		—		—		178,462
U.S. Government agencies		—		26,184		—		26,184
Corporate debt securities and commercial paper		—		31,059		—		31,059
Total included in short-term investments		178,462		57,243		—		235,705
Total assets	$	203,724	$	73,216	$	—	$	276,940
	December 31, 2021
	Level 1		Level 2		Level 3		Aggregate Fair Value
Financial Assets
Cash and cash equivalents:
Money market mutual funds	$	48,595	$	—	$	—	$	48,595
Total included in cash and cash equivalents		48,595		—		—		48,595
Investments:
U.S. Treasury securities		44,322		—		—		44,322
Corporate debt securities and commercial paper		—		39,026		—		39,026
Total included in short-term investments		44,322		39,026		—		83,348
U.S. Treasury securities included in   long-term investments		3,983		—		—		3,983
Total assets	$	96,900	$	39,026	$	—	$	135,926

There were no transfers between Levels 1, 2 or 3 for the periods presented.

10

Inari Medical, Inc.

Notes to Unaudited Condensed Consolidated Financial Statements

4. Cash Equivalents and Investments

The following is a summary of the Company’s cash equivalents and investments in debt securities as of September 30, 2022 and December 31, 2021 (in thousands):

	September 30, 2022
	Amortized Cost Basis		Unrealized Gain		Unrealized Loss			Fair Value
Financial Assets
Cash and cash equivalents:
Money market mutual funds	$	21,283	$	—	$	—		$	21,283
U.S. Treasury securities		3,979		—		—			3,979
Corporate debt securities and commercial paper		15,936		37		—			15,973
Total included in cash and cash equivalents		41,198		37		—			41,235
Investments:
U.S. Treasury securities		178,353		363		(254	)		178,462
U.S. Government agencies		26,139		45		—			26,184
Corporate debt securities and commercial paper		31,002		84		(27	)		31,059
Total included in short-term investments		235,494		492		(281	)		235,705
Total assets	$	276,692	$	529	$	(281	)	$	276,940
	December 31, 2021
	Amortized Cost Basis		Unrealized Gain		Unrealized Loss			Fair Value
Financial Assets
Cash and cash equivalents:
Money market mutual funds	$	48,595	$	—	$	—		$	48,595
Total included in cash and cash equivalents		48,595		—		—			48,595
Investments:
U.S. Treasury securities		44,349		—		(27	)		44,322
Corporate debt securities and commercial paper		39,012		14		—			39,026
Total included in short-term investments		83,361		14		(27	)		83,348
U.S. Treasury securities included in   long-term investments		3,993		—		(10	)		3,983
Total assets	$	135,949	$	14	$	(37	)	$	135,926

5. Inventories, net

Inventories, net of reserves as of September 30, 2022 and December 31, 2021 totaling $626,000 and $285,000, respectively, consist of the following (in thousands):

	September 30, 2022		December 31, 2021
Raw materials	$	11,700	$	5,763
Work-in-process		2,691		1,490
Finished goods		15,279		13,800
	$	29,670	$	21,053

11

Inari Medical, Inc.

Notes to Unaudited Condensed Consolidated Financial Statements

6. Property and Equipment, net

Property and equipment consist of the following (in thousands):

	September 30, 2022			December 31, 2021
Manufacturing equipment	$	12,146		$	7,408
Leasehold improvements		4,932			4,712
Assets in progress		3,446			3,124
Furniture and fixtures		3,998			3,044
Computer hardware		4,592			2,864
Computer software		100			100
Total property and equipment, gross		29,214			21,252
Accumulated depreciation		(8,023	)		(4,781	)
Total property and equipment, net	$	21,191		$	16,471

Depreciation expense of $947,000 and $648,000 was included in SG&A expenses and $223,000 and $172,000 was included in cost of goods sold for the three months ended September 30, 2022 and 2021, respectively. Depreciation expense of $2,774,000 and $1,633,000 was included in SG&A expenses and $656,000 and $475,000 was included in cost of goods sold for the nine months ended September 30, 2022 and 2021, respectively.

7. Commitments and Contingencies

Operating Leases

The Company has operating leases for facilities and certain equipment. Leases with an initial term of 12 months or less are not recorded on the consolidated balance sheet. Lease expense for operating leases is recognized on a straight-line basis over the lease term. For lease agreements, other than long-term real estate leases, the Company combines lease and non-lease components.

In March 2019, the Company executed a five-year lease for a facility in Irvine, California, where substantially all operations of the Company had been located from September 2019 to September 2021. This five-year lease was originally set to expire in September 2024 and contained two optional extension periods of five years each. Concurrent with the execution of a new ten-year lease in October 2020 (see below), the Company entered into a termination agreement (as amended) that released the Company from the obligations under the five-year lease effective July 2022 and contained options to extend the lease term for up to three periods of an additional 30 days each, which the Company has exercised as of September 30, 2022. In October 2022, the Company amended the lease agreement to cancel the termination agreement and update the lease termination date to September 2024.

In October 2020, the Company entered into a ten-year lease for a facility located in Irvine, California (the “Oak Canyon lease”) with two option extension periods of five years each, which the Company has determined that it is reasonably certain to exercise. The Oak Canyon lease requires the Company to make variable lease payments, which are not included in the lease liability due to the amounts not being fixed, for property taxes, insurance, maintenance, repair costs, and certain improvements deemed to be assets of the lessor. The Oak Canyon lease includes scheduled payment escalation clauses over the lease term. The Oak Canyon lease also requires the Company to maintain a letter of credit for the benefit of the landlord in the amount of $1.5 million, which is secured by the Company’s Credit Agreement. The Company has moved in and taken control of the facility and has determined the lease commencement date to be September 30, 2021. On the commencement date, the Company recorded approximately $42.2 million and $28.6 million of ROU asset and lease liability, respectively. The ROU asset includes approximately $13.5 million, net of $3.7 million tenant allowance, related to prepaid lease payments for the lessor’s owned leasehold improvements which were reclassified from assets in progress and deposits and other assets. The operating ROU asset also includes $7.3 million of additional prepaid lease payments for the lessor's owned leasehold improvements paid subsequent to the commencement date. As of September 30, 2022, the operating lease ROU asset and lease liability related to the Oak Canyon lease were $47.6 million and $28.4 million, respectively, with the remaining lease term of 226 months.

The Company's wholly owned subsidiary, Inari Medical Europe GmbH, entered into a five-year commercial lease agreement for office space located in Basel, Switzerland (the "Basel lease"). The lease commenced on July 1, 2022, with an option to extend for a period of five years, which the Company has determined that it is reasonably certain to exercise and is, therefore, included in the calculation of the ROU asset and lease liability. The lease payment is also indexed to the national consumer price index, which may be adjusted once per calendar year. The Basel lease also requires the Company to maintain a bank guarantee for the benefit of the landlord in the amount of approximately $0.2 million, which is secured by two letters of credit issued under the Company’s Credit Agreement. The Basel lease has a remaining lease term of 117 months as of September 30, 2022.

12

Inari Medical, Inc.

Notes to Unaudited Condensed Consolidated Financial Statements

As of September 30, 2022, the weighted average incremental borrowing rate used to measure operating lease liabilities was 6.1%. Cash paid for amounts included in the measurement of operating lease liabilities was $705,000 and $186,000 for the three months ended September 30, 2022 and 2021 and $2,030,000 and $557,000 for the nine months ended September 30, 2022 and 2021, respectively.

Total lease cost for the three and nine months ended September 30, 2022, are as follows (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2022		2021		2022		2021
Operating lease cost	$	1,039	$	331	$	3,139	$	702
Short-term lease cost		147		69		192		142
Variable lease cost		181		116		477		200
Total lease costs	$	1,367	$	516	$	3,808	$	1,044

Future minimum lease payments under operating leases liabilities as of September 30, 2022 are as follows (in thousands):

Year ending December 31:	Amount
Remainder of 2022	$	609
2023		2,471
2024		2,550
2025		2,619
2026		2,693
Thereafter		41,478
Total lease payments		52,420
Less imputed interest		(21,455	)
Total lease liabilities		30,965
Less: lease liabilities - current portion		(588	)
Lease liabilities - noncurrent portion	$	30,377

The following are future minimum lease payments for the lease amendment discussed above, which has not yet commenced and is not included in ROU assets and operating lease liabilities as of September 30, 2022 (in thousands):

Year ending December 31:	Amount
Remainder of 2022	$	145
2023		758
2024		584
Total lease payments	$	1,487

Indemnification

In the normal course of business, the Company enters into contracts and agreements that contain a variety of representations and warranties and may provide for general indemnifications. The Company’s exposure under these agreements is unknown because it involves claims that may be made against the Company in the future but have not yet been made. To date, the Company has not been subject to any claims or required to defend any action related to its indemnification obligations.

The Company’s amended and restated certificate of incorporation contains provisions limiting the liability of directors, and its amended and restated bylaws provide that the Company will indemnify each of its directors to the fullest extent permitted under Delaware law. The Company’s amended and restated certificate of incorporation and amended and restated bylaws also provide its board of directors with discretion to indemnify its officers and employees when determined appropriate by the board. In addition, the Company has entered and expects to continue to enter into agreements to indemnify its directors and executive officers.

13

Inari Medical, Inc.

Notes to Unaudited Condensed Consolidated Financial Statements

Legal Proceedings

From time to time, the Company may become involved in legal proceedings arising out of the ordinary course of its business. Management is currently not aware of any matters that will have a material adverse effect on the consolidated financial position, results of operations or cash flows of the Company.

Sublicense Agreement

In August 2019, the Company entered into a sublicense agreement of intellectual property rights related to the tubular braiding for the non-surgical removal of clots and treatment of embolism and thrombosis in human vasculature other than carotid arteries, coronary vasculature and cerebral vasculature. Under the sublicense agreement, the Company is required to pay an ongoing quarterly administration fee, which amounted to $29,000 for the three months ended September 30, 2022 and 2021 and $87,000 for the nine months ended September 30, 2022 and 2021. Additionally, the Company is obligated to pay an ongoing royalty ranging from 1% to 1.5% of the net sales of products utilizing the licensed intellectual property, subject to a minimum royalty quarterly fee of $1,500. The Company recorded royalty expense to cost of goods sold of $1,500 and $201,000 for the three months ended September 30, 2022 and 2021, respectively, and $215,000 and $586,000 for the nine months ended September 30, 2022 and 2021, respectively.

Licensed Technology

In December 2021, the Company entered into an exclusive, perpetual, royalty free, technology license agreement (the “Licensed Technology”) for use in a particular research and development project that requires total payments of approximately $4.2 million payable in three installments due in 2022 and 2023. The Company accounted for the purchase as a research and development expense in December 2021 as it was determined to have no future alternative uses. As of September 30, 2022, the outstanding balance was approximately $1.2 million, which was included in accrued expenses and other current liabilities on the consolidated balance sheets.

8. Concentrations

The Company’s revenue is derived primarily from the sale of catheter-based therapeutic devices in the United States. For the three and nine months ended September 30, 2022 and 2021, there were no customers that accounted for more than 10% of the Company’s revenue. As of September 30, 2022 and December 31, 2021, there were no customers that accounted for more than 10% of the Company’s accounts receivable.

No vendor accounted for more than 10% of the Company’s purchases for the three and nine months ended September 30, 2022 and 2021. There were no vendors that accounted for more than 10% of the Company’s accounts payable as of September 30, 2022 and December 31, 2021.

9. Related Party

The Company utilizes MRI The Hoffman Group (“MRI”), a recruiting services company owned by the brother of the Chief Executive Officer and President and member of the board of directors of the Company. The Company paid for recruiting services provided by MRI amounting to $70,000 and $38,000 for the three months ended September 30, 2022 and 2021 and $262,000 and $301,000 for the nine months ended September 30, 2022 and 2021, respectively, which was included in operating expenses on the condensed consolidated statements of operations and comprehensive income (loss). As of September 30, 2022 and December 31, 2021, there was no balance payable to MRI.

10. Debt

Bank of America Credit Facility

In September 2020, the Company entered into a senior secured revolving credit facility with Bank of America (the “Credit Agreement”), as amended, under which the Company may borrow loans up to a maximum principal amount of $30 million. The amount available to borrow under the Credit Agreement is comprised of a) 85% of eligible accounts receivable, plus b) pledged cash (up to $10 million). There was no principal amount outstanding and no cash was pledged under the Credit Agreement as of September 30, 2022 and December 31, 2021, and the amount available to borrow under the Credit Agreement was approximately $28.0 million.

Advances under the Credit Agreement will bear interest at a base rate per annum (the “Base Rate”) plus an applicable margin (the “Margin”). The Base Rate equals the greater of (i) the Prime Rate, (ii) the Federal funds rate plus 0.50%, or (iii) the LIBOR rate based upon an interest period of 30 days plus 1.00%. The Margin ranges from 1.00% to 1.50% based on the Company’s applicable fixed charge coverage ratio. Advances under the Credit Agreement designated as “LIBOR Loans” will bear interest at a rate per

14

Inari Medical, Inc.

Notes to Unaudited Condensed Consolidated Financial Statements

annum equal to the LIBOR rate plus the applicable Margin ranging from 2.00% to 2.50% based on the Company’s applicable fixed charge coverage ratio. Interest on loans outstanding under the Credit Agreement is payable monthly. Loan principal balances outstanding under the Credit Agreement are due at maturity in September 2023. The Company may prepay any loans under the Credit Agreement at any time without any penalty or premium. The Company is also required to pay an unused line fee at an annual rate ranging from 0.25% to 0.375% per annum of the average daily unused portion of the aggregate revolving credit commitments under the Credit Agreement.

The Credit Agreement also includes a Letter of Credit subline facility (the “LC Facility”) of up to $5 million. The aggregate stated amount outstanding of letter of credits reduces the total borrowing base available under the Credit Agreement. The Company is required to pay the following fees under the LC Facility are as follows: (a) a fee equal to the applicable margin in effect for LIBOR loans (currently 2.25%) times the average daily stated amount of outstanding letter of credits; (b) a fronting fee equal to 0.125% per annum on the stated amount of each letter of credit outstanding. As of September 30, 2022 , the Company had four letters of credit in the aggregated amount of $2.0 million outstanding under the LC Facility. As of December 31, 2021, the Company had two letters of credit in the aggregated amount of $1.8 million outstanding under the LC Facility.

The Credit Agreement contains certain customary covenants and events of default. The Company was in compliance with its covenant requirements as of September 30, 2022. Obligations under the Credit Agreement are secured by substantially the Company’s assets, excluding intellectual property.

11. Stockholder’s Equity

Common Stock

In March 2022, the Company completed an underwritten public offering (“Follow-On Offering”) of 2,300,000 shares of its common stock, including 300,000 shares sold pursuant to the underwriters’ exercise of their option to purchase additional shares, at a public offering price of $81.00 per share. The Company received net proceeds of approximately $174.4 million, after deducting underwriters’ discounts and commissions of $11.2 million and offering costs of $0.7 million.

12. Equity Incentive Plans

In 2011, the Company adopted the 2011 Equity Incentive Plan (the “2011 Plan”) to permit the grant of share-based awards, such as stock grants and incentives and non-qualified stock options to employees, directors, consultants and advisors. The Board has the authority to determine to whom awards will be granted, the number of shares, the term and the exercise price.

In March 2020, the Company adopted the 2020 Incentive Award Plan (the “2020 Plan”), which became effective in connection with the IPO. As a result, the Company may not grant any additional awards under the 2011 Plan. The 2011 Plan will continue to govern outstanding equity awards granted thereunder. The Company has initially reserved 3,468,048 shares of common stock for the issuance of a variety of awards under the 2020 Plan, including stock options, stock appreciation rights, awards of restricted stock and awards of restricted stock units. In addition, the number of shares of common stock reserved for issuance under the 2020 Plan will automatically increase on the first day of January for a period of up to ten years, commencing on January 1, 2021, in an amount equal to 3% of the total number of shares of the Company’s capital stock outstanding on the last day of the preceding year, or a lesser number of shares determined by the Company’s board of directors. As of September 30, 2022, there were 5,696,304 shares available for issuance under the 2020 Plan, including 1,509,404 additional shares reserved effective January 1, 2022.

2011 Equity Incentive Plan

Stock Options

A summary of stock option activities under the 2011 Plan for the nine months ended September 30, 2022 is as follows (intrinsic value in thousands):

	Number of Awards			Weighted Average Exercise Price		Weighted Average Fair Value		Weighted Average Remaining Contractual Life (in years)		Intrinsic Value
Outstanding, December 31, 2021		2,574,354		$	1.43	$	1.02		7.07	$	231,286
Exercised		(718,297	)	$	0.85	$	0.07			$	54,856
Cancelled		(17,495	)	$	2.34	$	1.41			$	1,342
Outstanding, September 30, 2022		1,838,562		$	1.64	$	1.15		6.38	$	130,529
Vested and exercisable at September 30, 2022		1,449,196		$	1.32	$	0.96		6.26	$	103,352
Vested and expected to vest at September 30, 2022		1,826,633		$	1.63	$	1.14		6.38	$	129,708

15

Inari Medical, Inc.

Notes to Unaudited Condensed Consolidated Financial Statements

The aggregate intrinsic values of options outstanding, vested and exercisable, and vested and expected to vest were calculated as the difference between the exercise price of the options and the estimated fair value of the Company’s common stock.

Restricted Stock Units

In March 2019, the Company granted, under the 2011 Plan, restricted stock unit awards (“RSUs”) to certain employees that vest only upon the satisfaction of both a time-based service condition and a performance-based condition. The performance-based condition is a liquidity event requirement that was satisfied on the effective date of the IPO of the Company’s common stock. The RSUs are subject to a four-year cliff vesting and will vest in March 2023. If the RSUs vest, the actual number of RSUs that will vest will be dependent on the per share value of the Company’s common stock, which is a market-based condition, determined based on the average closing price of the Company’s common stock for the three-month period immediately preceding the satisfaction of the service condition.

There was no activity related to RSUs under the 2011 Plan during the three and nine months ended September 30, 2022. As of September 30, 2022 and December 31, 2021, the outstanding balance of RSUs under 2011 Plan was 2,712,674 with a weighted average fair value at the time of grant of $0.17 per RSU.

2020 Incentive Award Plan

Restricted Stock Units

RSUs are share awards that entitle the holder to receive freely tradable shares of the Company’s common stock upon vesting. The RSUs cannot be transferred and the awards are subject to forfeiture if the holder’s employment terminates prior to the release of the vesting restrictions. The RSUs generally vest over a four-year period with straight-line vesting and a 25% one-year cliff or over a three-year period in equal amounts on a quarterly basis, provided the employee remains continuously employed with the Company. The fair value of the RSUs is equal to the closing price of the Company’s common stock on the grant date.

RSU activities under the 2020 Plan is set forth below:

	Number of Awards			Weighted Average Fair Value
Outstanding, December 31, 2021		611,205		$	88.34
Granted		602,831			73.94
Vested		(189,006	)		84.52
Cancelled		(42,774	)		84.77
Outstanding, September 30, 2022		982,256		$	80.39

The total fair value of RSUs vested under both the 2011 Plan and 2020 Plan was $4.5 million and $11.4 million for the three months ended September 30, 2022 and 2021, and $15.3 million and $15.1 million for the nine months ended September 30, 2022 and 2021, respectively.

Stock-based Compensation Expense

Total compensation cost for all share-based payment arrangements recognized, including $780,000 and $546,000 for the three months ended September 30, 2022 and 2021 and $2.5 million and $1.9 million for the nine months ended September 30, 2022 and 2021, respectively, related to the Employee Stock Purchase Plan, was as follows (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2022		2021		2022		2021
Cost of goods sold	$	386	$	218	$	1,126	$	597
Research and development		1,051		580		3,143		1,601
Selling, general and administrative		5,919		11,701		16,806		18,741
	$	7,356	$	12,499	$	21,075	$	20,939

16

Inari Medical, Inc.

Notes to Unaudited Condensed Consolidated Financial Statements

Total compensation costs as of September 30, 2022 related to all non-vested awards to be recognized in future periods was $67.0 million and is expected to be recognized over the remaining weighted average period of 2.9 years.

Employee Stock Purchase Plan

In May 2020, the Company adopted the 2020 Employee Stock Purchase Plan (“ESPP”), which became effective on the date the ESPP was adopted by the Company’s board of directors. Each offering to the employees to purchase stock under the ESPP will begin on each August 1 and February 1 and will end on the following January 31 and July 31, respectively. The first offering period began on August 1, 2020. On each purchase date, which falls on the last date of each offering period, ESPP participants will purchase shares of common stock at a price per share equal to 85% of the lesser of (1) the fair market value per share of the common stock on the offering date or (2) the fair market value of the common stock on the purchase date. The occurrence and duration of offering periods under the ESPP are subject to the determinations of the Company’s Compensation Committee, in its sole discretion.

The fair value of the ESPP shares is estimated using the Black-Scholes option pricing model with the following assumptions:

	Nine Months Ended September 30,
	2022	2021
Expected term (in years)	0.5	0.5
Expected volatility	56.09%	51.91%
Dividend yield	0.00%	0.00%
Risk free interest rate	0.48%	0.08%

As of September 30, 2022, a total of 218,564 shares of common stock, including 78,707 shares purchased in July 2022, have been purchased under the ESPP, and a total of 1,767,957 shares of common stock, including 503,135 additional shares effective January 1, 2022, are reserved for future purchases.

13. Income Taxes

The following table reflects the Company’s provision for income taxes for the periods indicated (in thousands):

	Three Months Ended September 30,						Nine Months Ended September 30,
	2022			2021			2022			2021
(Loss) income before income taxes	$	(9,313	)	$	(2,743	)	$	(21,377	)	$	9,004
Provision for income taxes		840			61			2,092			271
Net (loss) income	$	(10,153	)	$	(2,804	)	$	(23,469	)	$	8,733
Provision for income taxes as a percentage    of (loss) income before income taxes		9.0	%		2.2	%		9.8	%		3.0	%

The effective tax rate for all periods is driven by pre-tax income/(loss), business credits, equity compensation, state taxes, and the change in valuation allowance. The Company's income tax provision for interim reporting periods has historically been calculated by applying an estimate of the annual effective income tax rate for the full year to "ordinary" income (loss) for the interim reporting period, which is calculated as pre-tax income (loss) excluding unusual and infrequently occurring discrete items. For the nine months ended September 30, 2022, we calculated the income tax provision using a discrete effective income tax rate method as if the interim year to date period was an annual period. We determined that since normal changes in estimated "ordinary" income (loss) would result in disproportionate changes in the estimated annual effective income tax rate, the Company's historical method of calculating its income tax provision for interim reporting periods would not provide a reliable estimate for the nine months ended September 30, 2022.

For tax years beginning after December 31, 2021, certain research and development costs are required to be capitalized and amortized over a five year period under the Tax Cuts and Jobs Act, which was signed into law December 22, 2017. The Company has reviewed and incorporated this change, which will impact the expected U.S. federal and state tax expense and cash taxes to be paid for the tax year ending December 31, 2022.

Valuation Allowance

17

Inari Medical, Inc.

Notes to Unaudited Condensed Consolidated Financial Statements

ASC 740 requires that the tax benefit of net operating losses, or NOLs, temporary differences and credit carryforwards be recorded as an asset to the extent that management assesses that realization is “more likely than not.” Realization of the future tax benefits is dependent on the Company’s ability to generate sufficient taxable income within the carryback or carryforward periods. As of December 31, 2021, the Company maintained a full valuation allowance of $17.9 million against the Company's net deferred tax assets. As of September 30, 2022, the Company believes that the deferred tax assets are currently not considered more likely than not to be realized and, accordingly, has maintained a full valuation allowance against its deferred tax assets. The Company will continue to assess its position on the realizability of its deferred tax assets, until such time as sufficient positive evidence may become available to allow the Company to reach a conclusion that a significant portion of the valuation allowance will no longer be needed. Any release of the valuation allowance may result in a material benefit recognized in the quarter of release.

Uncertain Tax Positions

The Company has recorded uncertain tax positions related to its federal and California research and development credit carryforwards. No interest or penalties have been recorded related to the uncertain tax positions due to credit carryforwards that are available to offset the uncertain tax positions. It is not expected that there will be a significant change in the uncertain tax position in the next twelve months. The Company is subject to U.S. federal and state income tax as well as to income tax in various foreign jurisdictions. In the normal course of business, the Company is subject to examination by tax authorities. As of the date of the financial statements, there are no income tax examinations in progress. The statute of limitations for tax years ended after December 31, 2016 and December 31, 2017 are open for state and federal tax purposes, respectively.

14. Retirement Plan

In December 2017, the Company adopted the Inari Medical, Inc. 401(k) Plan which allows eligible employees after one month of service to contribute pre-tax and Roth contributions to the plan, as allowed by law. The plan assets are held by Vanguard and the plan administrator is Ascensus Trust Company. Beginning in January 2021, the Company contributes a $1.00 match for every $1.00 contributed by a participating employee up to the greater of $3,000 or 4% of eligible compensation under the plan, with such Company's contributions becoming fully vested immediately. Matching contribution expense was $1.7 million and $0.8 million for the three months ended September 30, 2022 and 2021, and $6.2 million and $2.6 million for the nine months ended September 30, 2022 and 2021, respectively. The Company recorded an out-of-period adjustment in the second quarter of 2022 resulting in additional matching contribution expense of $0.8 million for the nine months ended September 30, 2022. The out-of-period adjustment was not considered material to the fiscal 2021 or fiscal 2022 annual consolidated financial statements.

18

Inari Medical, Inc.

Notes to Unaudited Condensed Consolidated Financial Statements

15. Net Income (Loss) Per Share

The components of net income per share are as follows:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2022			2021			2022			2021
Numerator:
Net (loss) income (in thousands)	$	(10,153	)	$	(2,804	)	$	(23,469	)	$	8,733
Denominator:
Weighted average number of common shares    outstanding - basic		53,491,625			50,001,996			52,552,662			49,664,037
Common stock equivalents from outstanding    common stock options		—			—			—			2,927,569
Common stock equivalents from unvested RSUs		—			—			—			2,917,867
Common stock equivalents from ESPP		—			—			—			847
Common stock equivalents from restricted stock		—			—			—			741
Weighted average number of common shares    outstanding - diluted		53,491,625			50,001,996			52,552,662			55,511,061
Net (loss) income per share:
Basic	$	(0.19	)	$	(0.06	)	$	(0.45	)	$	0.18
Diluted	$	(0.19	)	$	(0.06	)	$	(0.45	)	$	0.16

The following outstanding potentially dilutive common stock equivalents have been excluded from the calculation of diluted net loss per share for the three and nine months ended September 30, 2022 and the three months ended September 30, 2021 due to their anti-dilutive effect:

	Three and Nine Months Ended September 30, 2022		Three Months Ended September 30, 2021
Common stock options		1,838,562		2,732,986
RSUs		3,694,930		2,778,176
Restricted stock subject to future vesting		—		741
		5,533,492		5,511,903

19

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

The following discussion and analysis of our financial condition and results of operations should be read in conjunction with our unaudited condensed consolidated financial statements and related notes appearing elsewhere in this Quarterly Report on Form 10-Q and our audited financial statements and related notes thereto for the year ended December 31, 2021, included in our Annual Report on Form 10-K for the year ended December 31, 2021. In addition to historical financial information, the following discussion contains forward-looking statements that are based upon current plans, expectations and beliefs that involve risks and uncertainties. Our actual results may differ materially from those anticipated in these forward-looking statements as a result of various factors, including those set forth under “Part I, Item 1A. Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2021.

Overview

We are a medical device company with a mission to treat and transform the lives of patients suffering from venous and other diseases. Our current product offerings consist of two minimally-invasive, novel catheter-based mechanical thrombectomy systems, which are purpose-built for the specific characteristic of the venous system and the treatment of the two distinct manifestations of venous thromboembolism, or VTE - deep vein thrombosis, or DVT, and pulmonary embolism, or PE. Our ClotTriever product is FDA-cleared for the treatment of DVT. Our FlowTriever product is the first thrombectomy system FDA-cleared for the treatment of PE and is also FDA-cleared for clot in transit in the right atrium.

We believe the best way to treat VTE and improve the quality of life of patients suffering from this disease is to safely and effectively remove the blood clot. With that in mind, we designed and purpose-built our ClotTriever and FlowTriever systems. The ClotTriever is a mechanical thrombectomy system designed to core, capture and remove large clots from large vessels and is used to treat DVT. The FlowTriever is a large bore catheter-based aspiration and mechanical thrombectomy system designed to remove large clots from large vessels to treat PE. Both systems are designed to eliminate the need for thrombolytic drugs.

We believe our mission-focused and highly-trained commercial organization provides a significant competitive advantage. Our most important relationships are between our sales representatives and our treating physicians, which include interventional cardiologists, interventional radiologists and vascular surgeons. We recruit sales representatives who have substantial and applicable medical device and/or sales experience. Our front-line sales representatives typically attend procedures, which puts us at the intersection of the patients, products and physicians. We have developed systems and processes to harness the information gained from these relationships and we leverage this information to rapidly iterate products, introduce and execute physician education and training programs and scale our sales organization. We market and sell our products to hospitals, which are reimbursed by various third-party payors.

In March 2022, we completed an underwritten public offering, or the Follow-On Offering, of 2,300,000 shares of common stock, at a price of $81.00 per share. We received net proceeds of approximately $174.4 million, after deducting underwriters’ discounts and commissions and offering costs.

As of September 30, 2022, we had cash, cash equivalents, and short-term investments of $319.2 million, no long-term debt outstanding and an accumulated deficit of $41.1 million.

For the three months ended September 30, 2022, the Company generated $96.2 million in revenues with a gross margin of 88.5% and net loss of $10.2 million, as compared to revenues of $72.9 million with a gross margin of 90.3% and net loss of $2.8 million for the three months ended September 30, 2021.

For the nine months ended September 30, 2022, the Company generated $275.7 million in revenues with a gross margin of 88.6% and net loss of $23.5 million, as compared to revenues of $193.8 million with a gross margin of 91.5% and net income of $8.7 million for the nine months ended September 30, 2021.

COVID-19

The global healthcare system continues to face an unprecedented challenge as a result of the COVID-19 situation and its impact. COVID-19 may continue to have an adverse impact on aspects of our business, including the demand for our products, operations, and ability to research and develop and bring new products and services to market.

In response to the impact of COVID-19, we implemented a variety of measures to help manage through the impact and position us to keep operations running efficiently. However, with hospitals facing staff or other resource constraints, to the extent individuals and hospital systems de-prioritize, delay or cancel deferrable medical procedures, our business, cash flows, financial condition and results of operations may continue to be negatively affected.

The actual and perceived impact of COVID-19 is still evolving and cannot be predicted. As a result, we cannot assure you that our recent procedure volumes are indicative of future results or that we will not experience additional negative impacts associated with COVID-19 or staffing shortages, which could be significant. We continue to focus our efforts on the health and safety of patients, healthcare providers and employees, while executing our mission of transforming lives of patients. While the COVID-19 pandemic

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may continue to negatively impact our 2022 performance, we believe the long-term fundamentals remain strong and we will continue to effectively manage through these challenges.

Revenue

We currently derive substantially all our revenue from the sale of our ClotTriever and FlowTriever systems directly to hospitals primarily in the United States. Our customers typically purchase an initial stocking order of our products and then reorder replenishment as procedures are performed. We expect our revenue to increase in absolute dollars as we expand our sales organization and sales territories, add customers, expand the base of physicians that are trained to use our products, expand awareness of our products with new and existing customers and as physicians perform more procedures using our products. Revenue for ClotTriever and FlowTriever systems as a percentage of total revenue is as follows:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2022			2021			2022			2021
ClotTriever		31	%		30	%		32	%		33	%
FlowTriever		69	%		70	%		68	%		67	%

Critical Accounting Policies and Estimates

Other than the accounting policy changes discussed in "Note 2 - Summary of Significant Accounting Policies" to our condensed consolidated financial statements, which is included in "Part I, Item 1. Condensed Consolidated Financial Statements (Unaudited)", there have been no significant changes in our critical accounting policies during the nine months ended September 30, 2022, as compared to the critical accounting policies disclosed in Management's Discussion and Analysis of Financial Condition and Results of Operations included in our Annual Report on Form 10-K for the year ended December 31, 2021, filed with the SEC on February 23, 2022.

Results of Operations

Comparison of the three months ended September 30, 2022 and 2021

The following table sets forth the components of our unaudited condensed consolidated statements of operations in dollars and as percentage of revenue for the periods presented (dollars in thousands):

	Three Months Ended September 30,
	2022			%			2021			%			Change $
Revenue	$	96,204			100.0	%	$	72,916			100.0	%	$	23,288
Cost of goods sold		11,064			11.5	%		7,040			9.7	%		4,024
Gross profit		85,140			88.5	%		65,876			90.3	%		19,264
Operating expenses:
Research and development		19,105			19.9	%		12,499			17.1	%		6,606
Selling, general and administrative		75,833			78.8	%		56,104			76.9	%		19,729
Total operating expenses		94,938			98.7	%		68,603			94.0	%		26,335
Income (loss) from operations		(9,798	)		(10.2	%)		(2,727	)		(3.7	%)		(7,071	)
Other income (expense)
Interest income		618			0.6	%		27			0.0	%		591
Interest expense		(74	)		(0.1	%)		(73	)		(0.1	%)		(1	)
Other income (expense)		(59	)		(0.1	%)		30			0.0	%		(89	)
Total other expenses, net		485			0.4	%		(16	)		(0.1	%)		501
Income (loss) before income taxes	$	(9,313	)		(9.8	%)	$	(2,743	)		(3.8	%)	$	(6,570	)

Revenue. Revenue increased $23.3 million, or 31.9%, to $96.2 million during the three months ended September 30, 2022, compared to $72.9 million during the three months ended September 30, 2021. The increase in revenue was due primarily to an increase in the number of product offerings and the number of units sold as we expanded our sales territories, opened new accounts and achieved deeper penetration of our products into existing accounts.

Cost of Goods Sold. Cost of goods sold increased $4.0 million, or 57.2%, to $11.1 million during the three months ended September 30, 2022, compared to $7.0 million during the three months ended September 30, 2021. This increase was primarily due to the increase in the number of products sold and additional manufacturing overhead costs incurred as we invested significantly in our new facility and operational infrastructure to support our growth.

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Gross Margin. Gross margin for the three months ended September 30, 2022 decreased to 88.5%, compared to 90.3% for the three months ended September 30, 2021, primarily due to the costs associated with the addition of new products to our FlowTriever per procedure pricing model.

Research and Development Expenses. R&D expenses increased $6.6 million, or 52.9%, to $19.1 million during the three months ended September 30, 2022, compared to $12.5 million during the three months ended September 30, 2021. The increase in R&D expenses was primarily due to increases of $5.1 million of personnel-related expenses, $0.9 million in materials and supplies, and $0.5 million of clinical and regulatory expenses, in support of our growth drivers to develop new products and build the clinical evidence base.

Selling, General and Administrative Expenses. SG&A expenses increased $19.7 million, or 35.2%, to $75.8 million during the three months ended September 30, 2022, compared to $56.1 million during the three months ended September 30, 2021. The increase in SG&A costs was primarily due to increases of $12.5 million in personnel-related expenses as a result of increased headcount across our organization and increased commissions due to higher revenue, $2.1 million in travel and related expenses, $1.5 million in marketing expenses, $1.5 million in professional fees, and $1.1 million in facility related expenses, particularly related to our new facility.

Interest Income. Interest income increased by $0.6 million during the three months ended September 30, 2022, compared to the three months ended September 30, 2021. The increase in interest income was primarily due to higher interest rate and higher average cash, cash equivalent and short-term investments balances during the three months ended September 30, 2022 compared to the three months ended September 30, 2021.

Interest Expense. Interest expense was consistent with $74,000 during the three months ended September 30, 2022, compared to $73,000 during the three months ended September 30, 2021.

Other Income (Expense). Other expense of $59,000 for the three months ended September 30, 2022 consisted primarily of foreign currency transaction losses.

Comparison of the nine months ended September 30, 2022 and 2021

The following table sets forth the components of our unaudited condensed consolidated statements of operations in dollars and as percentage of revenue for the periods presented (dollars in thousands):

	Nine Months Ended September 30,
	2022			%			2021			%			Change $
Revenue	$	275,700			100.0	%	$	193,766			100.0	%	$	81,934
Cost of goods sold		31,378			11.4	%		16,477			8.5	%		14,901
Gross profit		244,322			88.6	%		177,289			91.5	%		67,033
Operating expenses:
Research and development		53,809			19.5	%		32,292			16.7	%		21,517
Selling, general and administrative		212,721			77.2	%		135,899			70.1	%		76,822
Total operating expenses		266,530			96.7	%		168,191			86.8	%		98,339
Income from operations		(22,208	)		(8.1	%)		9,098			4.7	%		(31,306	)
Other income (expense)
Interest income		882			0.3	%		130			0.1	%		752
Interest expense		(220	)		(0.1	%)		(220	)		(0.1	%)		—
Other income (expense)		169			0.1	%		(4	)		0.0	%		173
Total other expenses, net		831			0.3	%		(94	)		0.0	%		925
Income (loss) before income taxes	$	(21,377	)		(7.8	%)	$	9,004			4.7	%	$	(30,381	)

Revenue. Revenue increased $81.9 million, or 42.3%, to $275.7 million during the nine months ended September 30, 2022, compared to $193.8 million during the nine months ended September 30, 2021. The increase in revenue was due primarily to an increase in the number of product offerings and the number of units sold as we expanded our sales territories, opened new accounts and achieved deeper penetration of our products into existing accounts.

Cost of Goods Sold. Cost of goods sold increased $14.9 million, or 90.4%, to $31.4 million during the nine months ended September 30, 2022, compared to $16.5 million during the nine months ended September 30, 2021. This increase was primarily due to the increase in the number of products sold and additional manufacturing overhead costs incurred as we invested significantly in our new facility and operational infrastructure to support our growth.

Gross Margin. Gross margin for the nine months ended September 30, 2022 decreased to 88.6%, compared to 91.5% for the nine months ended September 30, 2021, primarily due to the costs associated with the addition of new products to our FlowTriever per procedure pricing model.

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Research and Development Expenses. R&D expenses increased $21.5 million, or 66.6%, to $53.8 million during the nine months ended September 30, 2022, compared to $32.3 million during the nine months ended September 30, 2021. The increase in R&D expenses was primarily due to increases of $15.0 million of personnel-related expenses, $3.7 million in materials and supplies, $1.2 million of clinical and regulatory expenses, and $0.9 million in software costs and depreciation expenses, in support of our growth drivers to develop new products and build the clinical evidence base.

Selling, General and Administrative Expenses. SG&A expenses increased $76.8 million, or 56.5%, to $212.7 million during the nine months ended September 30, 2022, compared to $135.9 million during the nine months ended September 30, 2021. The increase in SG&A costs was primarily due to increases of $51.3 million in personnel-related expenses as a result of increased headcount across our organization and increased commissions due to higher revenue, $6.9 million in travel and related expenses, $6.3 million in marketing expenses, $5.4 million in professional fees, $3.4 million in facility related expenses, particularly related to our new facility, and $2.3 million in software costs and depreciation expenses.

Interest Income. Interest income increased by $0.8 million or 578.5% to $0.9 million during the nine months ended September 30, 2022, compared to $0.1 million during the nine months ended September 30, 2021. The increase in interest income was primarily due to higher interest rate and higher average cash, cash equivalent and short-term investments balances during the nine months ended September 30, 2022 compared to the nine months ended September 30, 2021.

Interest Expense. Interest expense was consistent with $220,000 during the nine months ended September 30, 2022 and the nine months ended September 30, 2021.

Other income (Expenses) Other income of $169,000 for the nine months ended September 30, 2022 consisted primarily of foreign currency transaction gains.

Liquidity and Capital Resources

To date, our primary sources of capital have been the net proceeds we received through private placements of preferred stock, debt financing agreements, the sale of common stock in our IPO and Follow-On Offering, and revenue from the sale of our products. On May 27, 2020, we completed our IPO and sold 9,432,949 shares of our common stock at $19.00 per share. Upon completion of our IPO, we received net proceeds of approximately $163.0 million, after deducting underwriting discounts and commissions and offering expenses. In March 2022, we completed a Follow-On Offering and sold 2,300,000 shares of our common stock at $81.00 per share, for net proceeds of approximately $174.4 million, after deducting underwriting discounts and commissions and offering expenses. In September 2020, we entered into a revolving Credit Agreement with Bank of America which provides for loans up to a maximum of $30.0 million. As of September 30, 2022, we had cash and cash equivalents of $83.5 million, short-term investments of $235.7 million and an accumulated deficit of $41.1 million. As of September 30, 2022, we had no principal outstanding under the Credit Agreement and the amount available to borrow was approximately $28.0 million.

Based on our current planned operations, we expect that our cash and cash equivalents, short-term investments and available borrowings, along with cash flow from operations, will be adequate us to fund our operating expenses for at least the next 12 months.

If our available cash balances and cash flow from operations are insufficient to satisfy our liquidity requirements, we may seek to sell additional common or preferred equity or convertible debt securities, enter into an additional credit facility or another form of third-party funding or seek other debt financing. The sale of equity and convertible debt securities may result in dilution to our stockholders and, in the case of preferred equity securities or convertible debt, those securities could provide for rights, preferences or privileges senior to those of our common stock. The terms of debt securities issued or borrowings pursuant to a credit agreement could impose significant restrictions on our operations. If we raise funds through collaborations and licensing arrangements, we might be required to relinquish significant rights or grant licenses on terms that are not favorable to us. Additional capital may not be available on reasonable terms, or at all.

Cash Flows

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

	Nine Months Ended September 30,
	2022			2021
Net cash provided by (used in):
Operating activities	$	(25,227	)	$	10,479
Investing activities		(161,969	)		(48,365	)
Financing activities		178,827			4,693
Effect of foreign exchange rate on cash and cash equivalents		(855	)		(266	)
Net decrease in cash and cash equivalents	$	(9,224	)	$	(33,459	)

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Net Cash (Used in) Provided by Operating Activities

Net cash used in operating activities for the nine months ended September 30, 2022 was $25.2 million, consisting primarily of net loss of $23.5 million and a decrease in net operating assets of $28.5 million, offset by non-cash charges of $26.8 million. The decrease in net operating assets was primarily due to decreases in accounts payable and accrued liabilities of $1.0 million due to timing of payments and growth of our operations, lease prepayments for lessor's owned leasehold improvements of $4.5 million and a decrease in operating lease liabilities of $0.6 million, coupled with increases in accounts receivable of $12.2 million, inventories of $8.7 million, and prepaid and other assets of $1.5 million. The non-cash charges primarily consisted of $21.1 million in stock-based compensation expense, $3.4 million in depreciation, and $1.8 million in amortization of the right-of-use assets.

Net cash provided by operating activities for the nine months ended September 30, 2021 was $10.5 million, consisting primarily of net income of $8.7 million and non-cash charges of $23.7 million, offset by an increase in net operating assets of $21.9 million. The increase in net operating assets was primarily due to increases in accounts receivable of $10.9 million and inventories of $8.9 million to support the growth of our operations, an increase in prepaid and other assets of $4.5 million primarily from prepaid insurance, which were partially offset by increases in accounts payable of $2.0 million and accrued liabilities of $12.9 million due to timing of payments and growth of our operations, lease prepayments for lessor's owned leasehold improvements of $12.0 million and a decrease in operating lease liabilities of $0.6 million. The non-cash charges primarily consisted of $20.9 million in stock-based compensation expense, $2.1 million in depreciation, and $0.5 million in amortization of the right-of-use assets.

Net Cash Used in Investing Activities

Net cash used in investing activities for the nine months ended September 30, 2022 was $162.0 million, consisting of $332.1 million purchases of short-term investments, $5.7 million purchases of other investments, and $8.2 million purchases of property and equipment, offset by maturities of short-term investments of $184.0 million.

Net cash used in investing activities for the nine months ended September 30, 2021 was $48.4 million, consisting of $105.4 million purchases of marketable securities coupled with $10.9 million purchases of property and equipment, offset by maturities of short-term investments of $68.0 million.

Net Cash Provided by Financing Activities

Net cash provided by financing activities in the nine months ended September 30, 2022 was $178.8 million, consisting of $174.4 million net proceeds from the issuance of common stock in the Follow-On Offering, net of issuance costs of $11.9 million, $8.4 million proceeds from the issuance of common stock under our employee stock purchase plan and $0.6 million of proceeds from exercise of stock options, offset by $4.6 million of tax payments related to vested RSUs.

Net cash provided by financing activities in the nine months ended September 30, 2021 was $4.7 million, consisting of proceeds of $5.6 million in proceeds from the issuance of common stock under our employee stock purchase plan and $0.7 million of proceeds from exercise of stock options, offset by $1.6 million of tax payments related to vested RSUs.

Off-Balance Sheet Arrangements

We do not have any off-balance sheet arrangements, as defined by applicable regulations of the U.S. Securities and Exchange Commission, that are reasonably likely to have a current or future material effect on our financial condition, results of operations, liquidity, capital expenditures or capital resources.

Contractual Obligations and Commitments

There have been no material changes to our quantitative and qualitative disclosures about market risk from those disclosed in “Part II, Item 7. Quantitative and Qualitative Disclosures about Market Risk” included in our Annual Report on Form 10-K for the year ended December 31, 2021.

Item 3. Quantitative and Qualitative Disclosures about Market Risk.

There have been no material changes to our quantitative and qualitative disclosures about market risk as compared to the quantitative and qualitative disclosures about market risk described in our Annual Report on Form 10-K for the year ended December 31, 2021, filed with the SEC on February 23, 2022 under “Part II, Item 7. Quantitative and Qualitative Disclosures about Market Risk.

Item 4. Controls and Procedures.

Evaluation of disclosure controls and procedures

Our management, with the participation of our Principal Executive Officer and our Principal 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 Exchange Act of 1934, as amended, or the Exchange Act), as of September 30, 2022. Based on such evaluation, our Principal Executive Office and Principal Financial Officer concluded that, as of September 30, 2022, these disclosure controls and procedures were effective to provide reasonable assurance that information required to be disclosed by us in the reports that we file or submit under the Exchange Act, is

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recorded, processed, summarized and reported, with the time period specified in the SEC rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by us in the reports that we file or submit under the Act is accumulated and communicated to our management.

Changes in internal control over financial reporting

During the three months ended September 30, 2022, there were no changes in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act), that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Inherent limitations on effectiveness of controls and procedures

In designing and evaluating our disclosure controls and procedures, management recognizes that any control and procedure, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives. In addition, the design of disclosure controls and procedures must reflect the fact that there are resource constraints and that management is required to apply judgment in evaluating the benefits of possible controls and procedures relative to their costs.

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PART II—OTHER INFORMATION

Item 1. Legal Proceedings.

We are not subject to any material legal proceedings.

Item 1A. Risk Factors.

For a discussion of our potential risks and uncertainties, see the information in Part I, "Part I, Item 1A. Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2021. As of the date of this Report, there have been no material changes to the risk factors disclosed in our Annual Report on Form 10-K for the year ended December 31, 2021.

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

None.

Item 3. Defaults Upon Senior Securities.

None.

Item 4. Mine Safety Disclosures.

Not applicable.

Item 5. Other Information.

None.

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Item 6. Exhibits.

			Incorporated by reference
Exhibit Number	Description	Form	File Number	Exhibit	Filing Date
3.1	Amended and Restated Certificate of Incorporation	8-K	001-39293	3.1	5/28/2020
3.2	Amended and Restated Bylaws	8-K	001-39293	3.2	5/28/2020
31.1	Certification of Principal Executive Officer pursuant to Exchange Act Rules 13a-14(a) and 15d-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2	Certification of Principal Financial Officer pursuant to Exchange Act Rules 13a-14(a) and 15d-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1†	Certifications 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†	Certifications 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.
101.INS	Inline XBRL Instance Document - The instance document does not appear in the interactive data file because its EBRL tags are embedded within the inline XBRL document.
101.SCH	Inline XBRL Taxonomy Extension Schema Document
101.CAL	Inline XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF	Inline XBRL Taxonomy Extension Definition Linkbase Document
101.LAB	Inline XBRL Taxonomy Extension Label Linkbase Document
101.PRE	Inline XBRL Taxonomy Extension Presentation Linkbase Document
104	Cover Page with Interactive Data File (formatted as Inline XBRL with applicable taxonomy extension information contained in Exhibits 101).

† The certifications attached as Exhibit 32.1 and 32.2 that accompany this Quarterly Report on Form 10-Q are deemed furnished and not filed with the U.S. Securities and Exchange Commission and are not to be incorporated by reference into any filing of Inari Medical, Inc. under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, whether made before or after the date of this Quarterly Report on Form 10-Q, irrespective of any general incorporation language contained in such filing.

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SIGNATURES

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

	Inari Medical, Inc.
Date: November 2, 2022	By:	/s/ William Hoffman
		William Hoffman
		Chief Executive Officer and President (Principal Executive Officer)
Date: November 2, 2022	By:	/s/ Mitchell Hill
		Mitchell Hill
		Chief Financial Officer (Principal Financial Officer and Principal Accounting Officer)

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EX-31.1

Exhibit 31.1

CERTIFICATION 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

I, William Hoffman, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of Inari Medical, Inc. (the "registrant");

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

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

4.The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in the Exchange Act Rules 13a-15(f) and 15d-15(f) for the registrant and have:

(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this Report is being prepared;

(b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this Report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this Report based on such evaluation; and

(d)Disclosed in this Report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5.The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: November 2, 2022	By:	/s/ William Hoffman
		William Hoffman
		Chief Executive Officer and President (Principal Executive Officer)

EX-31.2

Exhibit 31.2

CERTIFICATION 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

I, Mitchell Hill, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of Inari Medical, Inc. (the "registrant");

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

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

4.The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in the Exchange Act Rules 13a-15(f) and 15d-15(f) for the registrant and have:

(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this Report is being prepared;

(b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this Report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this Report based on such evaluation; and

(d)Disclosed in this Report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5.The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: November 2, 2022	By:	/s/ Mitchell Hill
		Mitchell Hill
		Chief Financial Officer (Principal Financial Officer and Principal Accounting Officer)

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Inari Medical, Inc. (the “Company”) on Form 10-Q for the period ended September 30, 2022 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

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

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

Date: November 2, 2022	By:	/s/ William Hoffman
		William Hoffman
		Chief Executive Officer and President (Principal Executive Officer)

The foregoing certification is being furnished solely to accompany the Report pursuant to 18 U.S.C. § 1350, and is not being filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and is not to be incorporated by reference into any filing of the Company, whether made before or after the date hereof, regardless of any general incorporation language in such filing.

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Inari Medical, Inc. (the “Company”) on Form 10-Q for the period ended September 30, 2022 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

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

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

Date: November 2, 2022	By:	/s/ Mitchell Hill
		Mitchell Hill
		Chief Financial Officer (Principal Financial Officer and Principal Accounting Officer)

The foregoing certification is being furnished solely to accompany the Report pursuant to 18 U.S.C. § 1350, and is not being filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and is not to be incorporated by reference into any filing of the Company, whether made before or after the date hereof, regardless of any general incorporation language in such filing.

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Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2022	Oct. 28, 2022
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2022
Document Transition Report	false
Document Fiscal Year Focus	2022
Entity File Number	001-39293
Entity Registrant Name	Inari Medical, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	45-2902923
Entity Address, Address Line One	6001 Oak Canyon
Entity Address, Address Line Two	Suite 100
Entity Address, City or Town	Irvine
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	92618
City Area Code	877
Local Phone Number	923-4747
Title of 12(b) Security	Common stock, $0.001 par value per share
Trading Symbol	NARI
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		53,652,850
Entity Central Index Key	0001531048
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q3
Amendment Flag	false

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Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Current assets
Cash and cash equivalents	$ 83,528	$ 92,752
Short-term investments in debt securities	235,705	83,348
Accounts receivable, net	54,059	42,351
Inventories , net	29,670	21,053
Prepaid expenses and other current assets	7,609	5,694
Total current assets	410,571	245,198
Property and equipment, net	21,191	16,471
Operating lease right-of-use assets	49,951	44,909
Deposits and other assets	6,106	981
Long-term investments in debt securities	0	3,983
Total assets	487,819	311,542
Current liabilities
Accounts payable	6,035	6,541
Payroll-related accruals	28,052	24,433
Accrued expenses and other current liabilities	7,668	10,737
Operating lease liabilities, current portion	588	802
Total current liabilities	42,343	42,513
Operating lease liabilities, noncurrent portion	30,377	28,404
Other long-term liability	0	1,416
Total liabilities	72,720	72,333
Commitments and contingencies (Note 7)
Stockholders' equity
Preferred stock, $0.001 par value, 10,000,000 shares authorized, no shares issued and outstanding as of September 30, 2022 and December 31, 2021	0	0
Common stock, $0.001 par value, 300,000,000 shares authorized as of September 30, 2022 and December 31, 2021; 53,595,277 and 50,313,452 shares issued and outstanding as of September 30, 2022 and December 31, 2021, respectively	53	50
Additional paid in capital	457,043	257,144
Accumulated other comprehensive loss	(945)	(402)
Accumulated deficit	(41,052)	(17,583)
Total stockholders' equity	415,099	239,209
Total liabilities and stockholders' equity	$ 487,819	$ 311,542

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Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - $ / shares	Sep. 30, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Preferred stock, Par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	300,000,000	300,000,000
Common stock, shares issued	53,595,277	50,313,452
Common stock, shares outstanding	53,595,277	50,313,452

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Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Statement [Abstract]
Revenue	$ 96,204	$ 72,916	$ 275,700	$ 193,766
Cost of goods sold	11,064	7,040	31,378	16,477
Gross profit	85,140	65,876	244,322	177,289
Operating expenses
Research and development	19,105	12,499	53,809	32,292
Selling, general and administrative	75,833	56,104	212,721	135,899
Total operating expenses	94,938	68,603	266,530	168,191
(Loss) income from operations	(9,798)	(2,727)	(22,208)	9,098
Other income (expense)
Interest income	618	27	882	130
Interest expense	(74)	(73)	(220)	(220)
Other income (expense)	(59)	30	169	(4)
Total other income (expenses)	485	(16)	831	(94)
(Loss) Income before income taxes	(9,313)	(2,743)	(21,377)	9,004
Provision for income taxes	840	61	2,092	271
Net (loss) income	(10,153)	(2,804)	(23,469)	8,733
Other comprehensive income (loss)
Foreign currency translation adjustments	(406)	(146)	(814)	(269)
Unrealized gain on available-for-sale debt securities	644	7	271	19
Total other comprehensive income (loss)	238	(139)	(543)	(250)
Comprehensive (loss) income	$ (9,915)	$ (2,943)	$ (24,012)	$ 8,483
Net (loss) income per share
Basic	$ (0.19)	$ (0.06)	$ (0.45)	$ 0.18
Diluted	$ (0.19)	$ (0.06)	$ (0.45)	$ 0.16
Weighted average common shares used to compute net (loss) income per share
Basic	53,491,625	50,001,996	52,552,662	49,664,037
Diluted	53,491,625	50,001,996	52,552,662	55,511,061

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Condensed Consolidated Statements Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid In Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Beginning Balance at Dec. 31, 2020	$ 200,254	$ 49	$ 227,624	$ 4	$ (27,423)
Beginning Balance, Shares at Dec. 31, 2020		49,251,614
Options exercised for common stock	381	$ 1	380
Options exercised for common stock, Shares		296,019
Issuance of common stock under employee stock purchase plan	1,882		1,882
Shares issued under Employee Stock Purchase Plan		36,881
Issuance of common stock upon vesting of restricted stock units, net of shares withheld for taxes	(49)		(49)
Issuance of common stock upon vesting of restricted stock units, net of shares withheld for taxes, Shares		901
Share-based compensation expense	3,836		3,836
Other comprehensive income (loss)	(162)			(162)
Net (loss) income	7,469				7,469
Ending Balance at Mar. 31, 2021	213,611	$ 50	233,673	(158)	(19,954)
Ending Balance, Shares at Mar. 31, 2021		49,585,415
Beginning Balance at Dec. 31, 2020	200,254	$ 49	227,624	4	(27,423)
Beginning Balance, Shares at Dec. 31, 2020		49,251,614
Net (loss) income	8,733
Ending Balance at Sep. 30, 2021	234,370	$ 50	253,256	(246)	(18,690)
Ending Balance, Shares at Sep. 30, 2021		50,144,590
Beginning Balance at Mar. 31, 2021	213,611	$ 50	233,673	(158)	(19,954)
Beginning Balance, Shares at Mar. 31, 2021		49,585,415
Options exercised for common stock	193		193
Options exercised for common stock, Shares		213,605
Issuance of common stock upon vesting of restricted stock units, net of shares withheld for taxes	(706)		(706)
Issuance of common stock upon vesting of restricted stock units, net of shares withheld for taxes, Shares		29,809
Share-based compensation expense	4,604		4,604
Other comprehensive income (loss)	51			51
Net (loss) income	4,068				4,068
Ending Balance at Jun. 30, 2021	221,821	$ 50	237,764	(107)	(15,886)
Ending Balance, Shares at Jun. 30, 2021		49,828,829
Options exercised for common stock	159		159
Options exercised for common stock, Shares		150,662
Issuance of common stock under employee stock purchase plan	3,676		3,676
Shares issued under Employee Stock Purchase Plan		48,168
Issuance of common stock upon vesting of restricted stock units, net of shares withheld for taxes	(842)		(842)
Issuance of common stock upon vesting of restricted stock units, net of shares withheld for taxes, Shares		116,931
Share-based compensation expense	12,499		12,499
Other comprehensive income (loss)	(139)			(139)
Net (loss) income	(2,804)				(2,804)
Ending Balance at Sep. 30, 2021	234,370	$ 50	253,256	(246)	(18,690)
Ending Balance, Shares at Sep. 30, 2021		50,144,590
Beginning Balance at Dec. 31, 2021	239,209	$ 50	257,144	(402)	(17,583)
Beginning Balance, Shares at Dec. 31, 2021		50,313,452
Options exercised for common stock	345	$ 1	344
Options exercised for common stock, Shares		322,882
Issuance of common stock under employee stock purchase plan	3,427		3,427
Shares issued under Employee Stock Purchase Plan		54,808
Issuance of common stock upon vesting of restricted stock units, net of shares withheld for taxes	(1,624)		(1,624)
Issuance of common stock upon vesting of restricted stock units, net of shares withheld for taxes, Shares		31,763
Issuance of common stock in connection with initial public offering, net of issuance costs of $11.3 million	174,394	$ 2	174,392
Issuance of common stock in public offering, net of issuance costs of $11.9 million		2,300,000
Share-based compensation expense	6,555		6,555
Other comprehensive income (loss)	(365)			(365)
Net (loss) income	(3,129)				(3,129)
Ending Balance at Mar. 31, 2022	418,812	$ 53	440,238	(767)	(20,712)
Ending Balance, Shares at Mar. 31, 2022		53,022,905
Beginning Balance at Dec. 31, 2021	239,209	$ 50	257,144	(402)	(17,583)
Beginning Balance, Shares at Dec. 31, 2021		50,313,452
Net (loss) income	(23,469)
Ending Balance at Sep. 30, 2022	415,099	$ 53	457,043	(945)	(41,052)
Ending Balance, Shares at Sep. 30, 2022		53,595,277
Beginning Balance at Mar. 31, 2022	418,812	$ 53	440,238	(767)	(20,712)
Beginning Balance, Shares at Mar. 31, 2022		53,022,905
Options exercised for common stock	156		156
Options exercised for common stock, Shares		228,313
Issuance of common stock upon vesting of restricted stock units, net of shares withheld for taxes	(1,751)		(1,751)
Issuance of common stock upon vesting of restricted stock units, net of shares withheld for taxes, Shares		54,607
Share-based compensation expense	7,164		7,164
Other comprehensive income (loss)	(416)			(416)
Net (loss) income	(10,187)				(10,187)
Ending Balance at Jun. 30, 2022	413,778	$ 53	445,807	(1,183)	(30,899)
Ending Balance, Shares at Jun. 30, 2022		53,305,825
Options exercised for common stock	109		109
Options exercised for common stock, Shares		167,102
Issuance of common stock under employee stock purchase plan	4,995		4,995
Shares issued under Employee Stock Purchase Plan		78,707
Issuance of common stock upon vesting of restricted stock units, net of shares withheld for taxes	(1,224)		(1,224)
Issuance of common stock upon vesting of restricted stock units, net of shares withheld for taxes, Shares		43,643
Share-based compensation expense	7,356		7,356
Other comprehensive income (loss)	238			238
Net (loss) income	(10,153)				(10,153)
Ending Balance at Sep. 30, 2022	$ 415,099	$ 53	$ 457,043	$ (945)	$ (41,052)
Ending Balance, Shares at Sep. 30, 2022		53,595,277

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Condensed Consolidated Statements Stockholders' Equity (Parenthetical) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Mar. 31, 2022	Sep. 30, 2022
Stock issuance cost	$ 11.9	$ 11.9

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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash flows from operating activities
Net (loss) income	$ (23,469)	$ 8,733
Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities:
Depreciation	3,430	2,108
Amortization of deferred financing costs	108	108
Amortization of right-of-use assets	1,799	537
Share based compensation expense	21,075	20,939
Allowance for credit losses, net	341	(22)
Loss on disposal of fixed assets	23	0
Changes in:
Accounts receivable	(12,220)	(10,898)
Inventories	(8,706)	(8,924)
Prepaid expenses, deposits and other assets	(1,537)	(4,525)
Accounts payable	(441)	2,042
Payroll-related accruals, accrued expenses and other liabilities	(562)	12,919
Operating lease liabilities	(565)	(574)
Lease prepayments for lessor's owned leasehold improvements	(4,503)	(11,964)
Net cash (used in) provided by operating activities	(25,227)	10,479
Cash flows from investing activities
Purchases of property and equipment	(8,173)	(10,927)
Purchases of marketable securities	(332,103)	(105,438)
Maturities of marketable securities	184,000	68,000
Purchases of other investments	(5,693)	0
Net cash used in investing activities	(161,969)	(48,365)
Cash flows from financing activities
Proceeds from issuance of common stock in public offering, net of issuance costs of $11.9 million	174,394	0
Proceeds from issuance of common stock under employee stock purchase plan	8,422	5,558
Proceeds from exercise of stock options	610	732
Payment of taxes related to vested restricted stock units	(4,599)	(1,597)
Net cash provided by financing activities	178,827	4,693
Effect of foreign exchange rate on cash and cash equivalents	(855)	(266)
Net decrease in cash	(9,224)	(33,459)
Cash and cash equivalents beginning of period	92,752	114,617
Cash and cash equivalents end of period	83,528	81,158
Supplemental disclosures of cash flow information:
Cash paid for income taxes	3,085	271
Cash paid for interest	112	113
Noncash investing and financing:
Lease liabilities arising from obtaining new right-of-use assets	$ 2,334	$ 28,648

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Condensed Consolidated Statements of Cash Flows (Unaudited) (Parenthetical) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Mar. 31, 2022	Sep. 30, 2022
Stock issuance cost	$ 11.9	$ 11.9

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Organization

9 Months Ended

Sep. 30, 2022

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Organization

1. Organization

Description of Business

Inari Medical, Inc. (the “Company”) was incorporated in Delaware in July 2011 and is headquartered in Irvine, California. The Company develops, manufactures, markets and sells devices for the interventional treatment of venous diseases.

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Summary of Significant Accounting Policies

9 Months Ended

Sep. 30, 2022

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

2. Summary of Significant Accounting Policies

COVID-19

The global healthcare system continues to face an unprecedented challenge as a result of the novel coronavirus, or COVID-19, situation and its impact. COVID-19 may continue to have an adverse impact on significant aspects of the Company and the business, including the demand for products, business operations, and the ability to research and develop and bring to market new products and services. To the extent individuals and hospital systems de-prioritize, delay or cancel deferrable medical procedures as a result of COVID-19, staffing or resource issues, or otherwise, the Company’s business, cash flows, financial condition and results of operations may continue to be negatively affected.

The Company continues to focus its efforts on the health and safety of patients, healthcare providers and employees, while executing its mission of transforming lives of venous thromboembolism ("VTE") patients. However, the COVID-19 pandemic may continue to negatively impact the Company's 2022 performance.

Basis of Presentation

The accompanying condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”).

The interim condensed consolidated balance sheet as of September 30, 2022, the condensed consolidated statements of operations and comprehensive income (loss), stockholders’ equity, and cash flows for the three and nine months ended September 30, 2022 and 2021 are unaudited. The unaudited interim condensed consolidated financial statements have been prepared on the same basis as the annual consolidated financial statements and reflect, in the opinion of management, all adjustments of a normal and recurring nature that are necessary for the fair presentation of the Company’s consolidated financial position as of September 30, 2022 and its consolidated results of operations and cash flows for the three and nine months ended September 30, 2022 and 2021. The financial data and the other financial information disclosed in the notes to the condensed consolidated financial statements related to the three and nine months ended September 30, 2022 and 2021 are also unaudited. The condensed consolidated results of operations for any interim period are not necessarily indicative of the results to be expected for the full year or for any other future annual or interim period. The condensed consolidated balance sheet as of December 31, 2021 included herein was derived from the audited financial statements as of that date. These interim condensed consolidated financial statements should be read in conjunction with our audited financial statements included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2021 filed on February 23, 2022.

Principles of Consolidation

The condensed consolidated financial statements include the Company and its wholly owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.

Management Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Significant estimates and assumptions made in the accompanying consolidated financial statements may include, but are not limited to, collectability of receivables, recoverability of long-lived assets, valuation of inventory, operating lease right-of-use ("ROU") assets and liabilities, other investments, fair value of stock options, recoverability of net deferred tax assets and related valuation allowance, and certain accruals. Estimates are based on historical experience and on various assumptions that the Company believes are reasonable under current circumstances. Actual results could differ materially from those estimates. Management periodically evaluates such estimates and assumptions, and they are adjusted prospectively based upon such periodic evaluation.

Revenue Recognition

The Company recognizes revenue in accordance with ASC 606, Revenue from Contracts with Customers. Under ASC 606, revenue is recognized when a customer obtains control of promised goods or services, in an amount that reflects the consideration which the Company expects to receive in exchange for those goods or services. To determine revenue recognition for arrangements that are within the scope of ASC 606, the Company performs the following five steps: (i) identify the contract(s) with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when (or as) the entity satisfies a performance obligation.

The Company sells its products primarily to hospitals in the United States utilizing the Company’s direct sales force. The Company recognizes revenue for arrangements where the Company has satisfied its performance obligation of shipping or delivering the product. For sales where the Company’s sales representative hand-deliver products directly to the hospitals, control of the products transfers to the customers upon such hand delivery. For sales where products are shipped, control of the products transfers either upon shipment or delivery of the products to the customer, depending on the shipping terms and conditions. Revenue from product sales is comprised of product revenue, net of product returns, administrative fees and sales rebates.

Performance Obligation—The Company has revenue arrangements that consist of a single performance obligation, the shipping or delivery of the Company’s products. The satisfaction of this performance obligation occurs with the transfer of control of the Company’s product to its customers, either upon shipment or delivery of the product.

Revenue is measured as the amount of consideration the Company expects to receive in exchange for transferring goods. The amount of revenue recognized is based on the transaction price, which represents the invoiced amount, net of administrative fees and sales rebates, where applicable. The Company provides a standard 30-day unconditional right of return period. The Company establishes estimated provisions for returns at the time of sale based on historical experience. Historically, the actual product returns have been immaterial to the Company’s consolidated financial statements.

As of September 30, 2022 and December 31, 2021, the Company recorded $987,000 and $448,000, respectively, of unbilled receivables, which are included in accounts receivable, net, in the accompanying consolidated balance sheets.

Revenue for ClotTriever and FlowTriever products as a percentage of total revenue was derived as follow:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2022			2021			2022			2021
ClotTriever		31	%		30	%		32	%		33	%
FlowTriever		69	%		70	%		68	%		67	%

The Company offers payment terms to its customers of less than three months and these terms do not include a significant financing component. The Company excludes taxes assessed by governmental authorities on revenue-producing transactions from the measurement of the transaction price.

The Company offers its standard warranty to all customers. The Company does not sell any warranties on a standalone basis. The Company’s warranty provides that its products are free of material defects and conform to specifications, and includes an offer to repair, replace or refund the purchase price of defective products. This assurance does not constitute a service and is not considered a separate performance obligation. The Company estimates warranty liabilities at the time of revenue recognition and records it as a charge to cost of goods sold.

Costs associated with product sales include commissions and are recorded in selling, general and administrative ("SG&A") expenses. The Company applies the practical expedient and recognizes commissions as an expense when incurred because the amortization period is less than one year.

Other Investments

In March 2022, the Company made investments in certain privately held companies, with no readily determinable fair value. The Company measures these investments at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for an identical or similar investments. The Company will monitor the information that becomes available from time to time and adjust the carrying values of these investments if there are identified events or changes in circumstances that have a significant adverse effect on the fair values. As of September 30, 2022, total other investments of $5.7 million was included in deposits and other assets on the condensed consolidated balance sheets with no impairment identified.

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Fair Value Measurements

9 Months Ended

Sep. 30, 2022

Fair Value Disclosures [Abstract]

Fair Value Measurements

3. Fair Value Measurements

The following tables summarize the Company’s financial assets and liabilities measured at fair value on a recurring basis by level within the fair value hierarchy as of September 30, 2022 and December 31, 2021 (in thousands):

	September 30, 2022
	Level 1		Level 2		Level 3		Aggregate Fair Value
Financial Assets
Cash and cash equivalents:
Money market mutual funds	$	21,283	$	—	$	—	$	21,283
U.S. Treasury securities		3,979		—		—		3,979
Corporate debt securities and commercial paper		—		15,973		—		15,973
Total included in cash and cash equivalents		25,262		15,973		—		41,235
Investments:
U.S. Treasury securities		178,462		—		—		178,462
U.S. Government agencies		—		26,184		—		26,184
Corporate debt securities and commercial paper		—		31,059		—		31,059
Total included in short-term investments		178,462		57,243		—		235,705
Total assets	$	203,724	$	73,216	$	—	$	276,940
	December 31, 2021
	Level 1		Level 2		Level 3		Aggregate Fair Value
Financial Assets
Cash and cash equivalents:
Money market mutual funds	$	48,595	$	—	$	—	$	48,595
Total included in cash and cash equivalents		48,595		—		—		48,595
Investments:
U.S. Treasury securities		44,322		—		—		44,322
Corporate debt securities and commercial paper		—		39,026		—		39,026
Total included in short-term investments		44,322		39,026		—		83,348
U.S. Treasury securities included in   long-term investments		3,983		—		—		3,983
Total assets	$	96,900	$	39,026	$	—	$	135,926

There were no transfers between Levels 1, 2 or 3 for the periods presented.

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Cash Equivalents and Investments

9 Months Ended

Sep. 30, 2022

Investments, Debt and Equity Securities [Abstract]

Cash Equivalents and Investments

4. Cash Equivalents and Investments

The following is a summary of the Company’s cash equivalents and investments in debt securities as of September 30, 2022 and December 31, 2021 (in thousands):

	September 30, 2022
	Amortized Cost Basis		Unrealized Gain		Unrealized Loss			Fair Value
Financial Assets
Cash and cash equivalents:
Money market mutual funds	$	21,283	$	—	$	—		$	21,283
U.S. Treasury securities		3,979		—		—			3,979
Corporate debt securities and commercial paper		15,936		37		—			15,973
Total included in cash and cash equivalents		41,198		37		—			41,235
Investments:
U.S. Treasury securities		178,353		363		(254	)		178,462
U.S. Government agencies		26,139		45		—			26,184
Corporate debt securities and commercial paper		31,002		84		(27	)		31,059
Total included in short-term investments		235,494		492		(281	)		235,705
Total assets	$	276,692	$	529	$	(281	)	$	276,940
	December 31, 2021
	Amortized Cost Basis		Unrealized Gain		Unrealized Loss			Fair Value
Financial Assets
Cash and cash equivalents:
Money market mutual funds	$	48,595	$	—	$	—		$	48,595
Total included in cash and cash equivalents		48,595		—		—			48,595
Investments:
U.S. Treasury securities		44,349		—		(27	)		44,322
Corporate debt securities and commercial paper		39,012		14		—			39,026
Total included in short-term investments		83,361		14		(27	)		83,348
U.S. Treasury securities included in   long-term investments		3,993		—		(10	)		3,983
Total assets	$	135,949	$	14	$	(37	)	$	135,926

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Inventories, Net

9 Months Ended

Sep. 30, 2022

Inventory Disclosure [Abstract]

Inventories, Net

5. Inventories, net

Inventories, net of reserves as of September 30, 2022 and December 31, 2021 totaling $626,000 and $285,000, respectively, consist of the following (in thousands):

	September 30, 2022		December 31, 2021
Raw materials	$	11,700	$	5,763
Work-in-process		2,691		1,490
Finished goods		15,279		13,800
	$	29,670	$	21,053

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Property and Equipment. net

9 Months Ended

Sep. 30, 2022

Property, Plant and Equipment [Abstract]

Property and Equipment. net

6. Property and Equipment, net

Property and equipment consist of the following (in thousands):

	September 30, 2022			December 31, 2021
Manufacturing equipment	$	12,146		$	7,408
Leasehold improvements		4,932			4,712
Assets in progress		3,446			3,124
Furniture and fixtures		3,998			3,044
Computer hardware		4,592			2,864
Computer software		100			100
Total property and equipment, gross		29,214			21,252
Accumulated depreciation		(8,023	)		(4,781	)
Total property and equipment, net	$	21,191		$	16,471

Depreciation expense of $947,000 and $648,000 was included in SG&A expenses and $223,000 and $172,000 was included in cost of goods sold for the three months ended September 30, 2022 and 2021, respectively. Depreciation expense of $2,774,000 and $1,633,000 was included in SG&A expenses and $656,000 and $475,000 was included in cost of goods sold for the nine months ended September 30, 2022 and 2021, respectively.

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Commitments and Contingencies

9 Months Ended

Sep. 30, 2022

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

7. Commitments and Contingencies

Operating Leases

The Company has operating leases for facilities and certain equipment. Leases with an initial term of 12 months or less are not recorded on the consolidated balance sheet. Lease expense for operating leases is recognized on a straight-line basis over the lease term. For lease agreements, other than long-term real estate leases, the Company combines lease and non-lease components.

In March 2019, the Company executed a five-year lease for a facility in Irvine, California, where substantially all operations of the Company had been located from September 2019 to September 2021. This five-year lease was originally set to expire in September 2024 and contained two optional extension periods of five years each. Concurrent with the execution of a new ten-year lease in October 2020 (see below), the Company entered into a termination agreement (as amended) that released the Company from the obligations under the five-year lease effective July 2022 and contained options to extend the lease term for up to three periods of an additional 30 days each, which the Company has exercised as of September 30, 2022. In October 2022, the Company amended the lease agreement to cancel the termination agreement and update the lease termination date to September 2024.

In October 2020, the Company entered into a ten-year lease for a facility located in Irvine, California (the “Oak Canyon lease”) with two option extension periods of five years each, which the Company has determined that it is reasonably certain to exercise. The Oak Canyon lease requires the Company to make variable lease payments, which are not included in the lease liability due to the amounts not being fixed, for property taxes, insurance, maintenance, repair costs, and certain improvements deemed to be assets of the lessor. The Oak Canyon lease includes scheduled payment escalation clauses over the lease term. The Oak Canyon lease also requires the Company to maintain a letter of credit for the benefit of the landlord in the amount of $1.5 million, which is secured by the Company’s Credit Agreement. The Company has moved in and taken control of the facility and has determined the lease commencement date to be September 30, 2021. On the commencement date, the Company recorded approximately $42.2 million and $28.6 million of ROU asset and lease liability, respectively. The ROU asset includes approximately $13.5 million, net of $3.7 million tenant allowance, related to prepaid lease payments for the lessor’s owned leasehold improvements which were reclassified from assets in progress and deposits and other assets. The operating ROU asset also includes $7.3 million of additional prepaid lease payments for the lessor's owned leasehold improvements paid subsequent to the commencement date. As of September 30, 2022, the operating lease ROU asset and lease liability related to the Oak Canyon lease were $47.6 million and $28.4 million, respectively, with the remaining lease term of 226 months.

The Company's wholly owned subsidiary, Inari Medical Europe GmbH, entered into a five-year commercial lease agreement for office space located in Basel, Switzerland (the "Basel lease"). The lease commenced on July 1, 2022, with an option to extend for a period of five years, which the Company has determined that it is reasonably certain to exercise and is, therefore, included in the calculation of the ROU asset and lease liability. The lease payment is also indexed to the national consumer price index, which may be adjusted once per calendar year. The Basel lease also requires the Company to maintain a bank guarantee for the benefit of the landlord in the amount of approximately $0.2 million, which is secured by two letters of credit issued under the Company’s Credit Agreement. The Basel lease has a remaining lease term of 117 months as of September 30, 2022.

As of September 30, 2022, the weighted average incremental borrowing rate used to measure operating lease liabilities was 6.1%. Cash paid for amounts included in the measurement of operating lease liabilities was $705,000 and $186,000 for the three months ended September 30, 2022 and 2021 and $2,030,000 and $557,000 for the nine months ended September 30, 2022 and 2021, respectively.

Total lease cost for the three and nine months ended September 30, 2022, are as follows (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2022		2021		2022		2021
Operating lease cost	$	1,039	$	331	$	3,139	$	702
Short-term lease cost		147		69		192		142
Variable lease cost		181		116		477		200
Total lease costs	$	1,367	$	516	$	3,808	$	1,044

Future minimum lease payments under operating leases liabilities as of September 30, 2022 are as follows (in thousands):

Year ending December 31:	Amount
Remainder of 2022	$	609
2023		2,471
2024		2,550
2025		2,619
2026		2,693
Thereafter		41,478
Total lease payments		52,420
Less imputed interest		(21,455	)
Total lease liabilities		30,965
Less: lease liabilities - current portion		(588	)
Lease liabilities - noncurrent portion	$	30,377

The following are future minimum lease payments for the lease amendment discussed above, which has not yet commenced and is not included in ROU assets and operating lease liabilities as of September 30, 2022 (in thousands):

Year ending December 31:	Amount
Remainder of 2022	$	145
2023		758
2024		584
Total lease payments	$	1,487

Indemnification

In the normal course of business, the Company enters into contracts and agreements that contain a variety of representations and warranties and may provide for general indemnifications. The Company’s exposure under these agreements is unknown because it involves claims that may be made against the Company in the future but have not yet been made. To date, the Company has not been subject to any claims or required to defend any action related to its indemnification obligations.

The Company’s amended and restated certificate of incorporation contains provisions limiting the liability of directors, and its amended and restated bylaws provide that the Company will indemnify each of its directors to the fullest extent permitted under Delaware law. The Company’s amended and restated certificate of incorporation and amended and restated bylaws also provide its board of directors with discretion to indemnify its officers and employees when determined appropriate by the board. In addition, the Company has entered and expects to continue to enter into agreements to indemnify its directors and executive officers.

Legal Proceedings

From time to time, the Company may become involved in legal proceedings arising out of the ordinary course of its business. Management is currently not aware of any matters that will have a material adverse effect on the consolidated financial position, results of operations or cash flows of the Company.

Sublicense Agreement

In August 2019, the Company entered into a sublicense agreement of intellectual property rights related to the tubular braiding for the non-surgical removal of clots and treatment of embolism and thrombosis in human vasculature other than carotid arteries, coronary vasculature and cerebral vasculature. Under the sublicense agreement, the Company is required to pay an ongoing quarterly administration fee, which amounted to $29,000 for the three months ended September 30, 2022 and 2021 and $87,000 for the nine months ended September 30, 2022 and 2021. Additionally, the Company is obligated to pay an ongoing royalty ranging from 1% to 1.5% of the net sales of products utilizing the licensed intellectual property, subject to a minimum royalty quarterly fee of $1,500. The Company recorded royalty expense to cost of goods sold of $1,500 and $201,000 for the three months ended September 30, 2022 and 2021, respectively, and $215,000 and $586,000 for the nine months ended September 30, 2022 and 2021, respectively.

Licensed Technology

In December 2021, the Company entered into an exclusive, perpetual, royalty free, technology license agreement (the “Licensed Technology”) for use in a particular research and development project that requires total payments of approximately $4.2 million payable in three installments due in 2022 and 2023. The Company accounted for the purchase as a research and development expense in December 2021 as it was determined to have no future alternative uses. As of September 30, 2022, the outstanding balance was approximately $1.2 million, which was included in accrued expenses and other current liabilities on the consolidated balance sheets.

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Concentrations

9 Months Ended

Sep. 30, 2022

Risks and Uncertainties [Abstract]

Concentrations

8. Concentrations

The Company’s revenue is derived primarily from the sale of catheter-based therapeutic devices in the United States. For the three and nine months ended September 30, 2022 and 2021, there were no customers that accounted for more than 10% of the Company’s revenue. As of September 30, 2022 and December 31, 2021, there were no customers that accounted for more than 10% of the Company’s accounts receivable.

No vendor accounted for more than 10% of the Company’s purchases for the three and nine months ended September 30, 2022 and 2021. There were no vendors that accounted for more than 10% of the Company’s accounts payable as of September 30, 2022 and December 31, 2021.

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Related Party

9 Months Ended

Sep. 30, 2022

Related Party Transactions [Abstract]

Related Party

9. Related Party

The Company utilizes MRI The Hoffman Group (“MRI”), a recruiting services company owned by the brother of the Chief Executive Officer and President and member of the board of directors of the Company. The Company paid for recruiting services provided by MRI amounting to $70,000 and $38,000 for the three months ended September 30, 2022 and 2021 and $262,000 and $301,000 for the nine months ended September 30, 2022 and 2021, respectively, which was included in operating expenses on the condensed consolidated statements of operations and comprehensive income (loss). As of September 30, 2022 and December 31, 2021, there was no balance payable to MRI.

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Debt

9 Months Ended

Sep. 30, 2022

Debt Disclosure [Abstract]

Debt

10. Debt

Bank of America Credit Facility

In September 2020, the Company entered into a senior secured revolving credit facility with Bank of America (the “Credit Agreement”), as amended, under which the Company may borrow loans up to a maximum principal amount of $30 million. The amount available to borrow under the Credit Agreement is comprised of a) 85% of eligible accounts receivable, plus b) pledged cash (up to $10 million). There was no principal amount outstanding and no cash was pledged under the Credit Agreement as of September 30, 2022 and December 31, 2021, and the amount available to borrow under the Credit Agreement was approximately $28.0 million.

Advances under the Credit Agreement will bear interest at a base rate per annum (the “Base Rate”) plus an applicable margin (the “Margin”). The Base Rate equals the greater of (i) the Prime Rate, (ii) the Federal funds rate plus 0.50%, or (iii) the LIBOR rate based upon an interest period of 30 days plus 1.00%. The Margin ranges from 1.00% to 1.50% based on the Company’s applicable fixed charge coverage ratio. Advances under the Credit Agreement designated as “LIBOR Loans” will bear interest at a rate per

annum equal to the LIBOR rate plus the applicable Margin ranging from 2.00% to 2.50% based on the Company’s applicable fixed charge coverage ratio. Interest on loans outstanding under the Credit Agreement is payable monthly. Loan principal balances outstanding under the Credit Agreement are due at maturity in September 2023. The Company may prepay any loans under the Credit Agreement at any time without any penalty or premium. The Company is also required to pay an unused line fee at an annual rate ranging from 0.25% to 0.375% per annum of the average daily unused portion of the aggregate revolving credit commitments under the Credit Agreement.

The Credit Agreement also includes a Letter of Credit subline facility (the “LC Facility”) of up to $5 million. The aggregate stated amount outstanding of letter of credits reduces the total borrowing base available under the Credit Agreement. The Company is required to pay the following fees under the LC Facility are as follows: (a) a fee equal to the applicable margin in effect for LIBOR loans (currently 2.25%) times the average daily stated amount of outstanding letter of credits; (b) a fronting fee equal to 0.125% per annum on the stated amount of each letter of credit outstanding. As of September 30, 2022 , the Company had four letters of credit in the aggregated amount of $2.0 million outstanding under the LC Facility. As of December 31, 2021, the Company had two letters of credit in the aggregated amount of $1.8 million outstanding under the LC Facility.

The Credit Agreement contains certain customary covenants and events of default. The Company was in compliance with its covenant requirements as of September 30, 2022. Obligations under the Credit Agreement are secured by substantially the Company’s assets, excluding intellectual property.

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Stockholder's Equity

9 Months Ended

Sep. 30, 2022

Equity [Abstract]

Stockholder's Equity

11. Stockholder’s Equity

Common Stock

In March 2022, the Company completed an underwritten public offering (“Follow-On Offering”) of 2,300,000 shares of its common stock, including 300,000 shares sold pursuant to the underwriters’ exercise of their option to purchase additional shares, at a public offering price of $81.00 per share. The Company received net proceeds of approximately $174.4 million, after deducting underwriters’ discounts and commissions of $11.2 million and offering costs of $0.7 million.

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Equity Incentive Plans

9 Months Ended

Sep. 30, 2022

Share-Based Payment Arrangement [Abstract]

Equity Incentive Plans

12. Equity Incentive Plans

In 2011, the Company adopted the 2011 Equity Incentive Plan (the “2011 Plan”) to permit the grant of share-based awards, such as stock grants and incentives and non-qualified stock options to employees, directors, consultants and advisors. The Board has the authority to determine to whom awards will be granted, the number of shares, the term and the exercise price.

In March 2020, the Company adopted the 2020 Incentive Award Plan (the “2020 Plan”), which became effective in connection with the IPO. As a result, the Company may not grant any additional awards under the 2011 Plan. The 2011 Plan will continue to govern outstanding equity awards granted thereunder. The Company has initially reserved 3,468,048 shares of common stock for the issuance of a variety of awards under the 2020 Plan, including stock options, stock appreciation rights, awards of restricted stock and awards of restricted stock units. In addition, the number of shares of common stock reserved for issuance under the 2020 Plan will automatically increase on the first day of January for a period of up to ten years, commencing on January 1, 2021, in an amount equal to 3% of the total number of shares of the Company’s capital stock outstanding on the last day of the preceding year, or a lesser number of shares determined by the Company’s board of directors. As of September 30, 2022, there were 5,696,304 shares available for issuance under the 2020 Plan, including 1,509,404 additional shares reserved effective January 1, 2022.

2011 Equity Incentive Plan

Stock Options

A summary of stock option activities under the 2011 Plan for the nine months ended September 30, 2022 is as follows (intrinsic value in thousands):

	Number of Awards			Weighted Average Exercise Price		Weighted Average Fair Value		Weighted Average Remaining Contractual Life (in years)		Intrinsic Value
Outstanding, December 31, 2021		2,574,354		$	1.43	$	1.02		7.07	$	231,286
Exercised		(718,297	)	$	0.85	$	0.07			$	54,856
Cancelled		(17,495	)	$	2.34	$	1.41			$	1,342
Outstanding, September 30, 2022		1,838,562		$	1.64	$	1.15		6.38	$	130,529
Vested and exercisable at September 30, 2022		1,449,196		$	1.32	$	0.96		6.26	$	103,352
Vested and expected to vest at September 30, 2022		1,826,633		$	1.63	$	1.14		6.38	$	129,708

The aggregate intrinsic values of options outstanding, vested and exercisable, and vested and expected to vest were calculated as the difference between the exercise price of the options and the estimated fair value of the Company’s common stock.

Restricted Stock Units

In March 2019, the Company granted, under the 2011 Plan, restricted stock unit awards (“RSUs”) to certain employees that vest only upon the satisfaction of both a time-based service condition and a performance-based condition. The performance-based condition is a liquidity event requirement that was satisfied on the effective date of the IPO of the Company’s common stock. The RSUs are subject to a four-year cliff vesting and will vest in March 2023. If the RSUs vest, the actual number of RSUs that will vest will be dependent on the per share value of the Company’s common stock, which is a market-based condition, determined based on the average closing price of the Company’s common stock for the three-month period immediately preceding the satisfaction of the service condition.

There was no activity related to RSUs under the 2011 Plan during the three and nine months ended September 30, 2022. As of September 30, 2022 and December 31, 2021, the outstanding balance of RSUs under 2011 Plan was 2,712,674 with a weighted average fair value at the time of grant of $0.17 per RSU.

2020 Incentive Award Plan

Restricted Stock Units

RSUs are share awards that entitle the holder to receive freely tradable shares of the Company’s common stock upon vesting. The RSUs cannot be transferred and the awards are subject to forfeiture if the holder’s employment terminates prior to the release of the vesting restrictions. The RSUs generally vest over a four-year period with straight-line vesting and a 25% one-year cliff or over a three-year period in equal amounts on a quarterly basis, provided the employee remains continuously employed with the Company. The fair value of the RSUs is equal to the closing price of the Company’s common stock on the grant date.

RSU activities under the 2020 Plan is set forth below:

	Number of Awards			Weighted Average Fair Value
Outstanding, December 31, 2021		611,205		$	88.34
Granted		602,831			73.94
Vested		(189,006	)		84.52
Cancelled		(42,774	)		84.77
Outstanding, September 30, 2022		982,256		$	80.39

The total fair value of RSUs vested under both the 2011 Plan and 2020 Plan was $4.5 million and $11.4 million for the three months ended September 30, 2022 and 2021, and $15.3 million and $15.1 million for the nine months ended September 30, 2022 and 2021, respectively.

Stock-based Compensation Expense

Total compensation cost for all share-based payment arrangements recognized, including $780,000 and $546,000 for the three months ended September 30, 2022 and 2021 and $2.5 million and $1.9 million for the nine months ended September 30, 2022 and 2021, respectively, related to the Employee Stock Purchase Plan, was as follows (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2022		2021		2022		2021
Cost of goods sold	$	386	$	218	$	1,126	$	597
Research and development		1,051		580		3,143		1,601
Selling, general and administrative		5,919		11,701		16,806		18,741
	$	7,356	$	12,499	$	21,075	$	20,939

Total compensation costs as of September 30, 2022 related to all non-vested awards to be recognized in future periods was $67.0 million and is expected to be recognized over the remaining weighted average period of 2.9 years.

Employee Stock Purchase Plan

In May 2020, the Company adopted the 2020 Employee Stock Purchase Plan (“ESPP”), which became effective on the date the ESPP was adopted by the Company’s board of directors. Each offering to the employees to purchase stock under the ESPP will begin on each August 1 and February 1 and will end on the following January 31 and July 31, respectively. The first offering period began on August 1, 2020. On each purchase date, which falls on the last date of each offering period, ESPP participants will purchase shares of common stock at a price per share equal to 85% of the lesser of (1) the fair market value per share of the common stock on the offering date or (2) the fair market value of the common stock on the purchase date. The occurrence and duration of offering periods under the ESPP are subject to the determinations of the Company’s Compensation Committee, in its sole discretion.

The fair value of the ESPP shares is estimated using the Black-Scholes option pricing model with the following assumptions:

	Nine Months Ended September 30,
	2022	2021
Expected term (in years)	0.5	0.5
Expected volatility	56.09%	51.91%
Dividend yield	0.00%	0.00%
Risk free interest rate	0.48%	0.08%

As of September 30, 2022, a total of 218,564 shares of common stock, including 78,707 shares purchased in July 2022, have been purchased under the ESPP, and a total of 1,767,957 shares of common stock, including 503,135 additional shares effective January 1, 2022, are reserved for future purchases.

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Income Taxes

9 Months Ended

Sep. 30, 2022

Income Tax Disclosure [Abstract]

Income Taxes

13. Income Taxes

The following table reflects the Company’s provision for income taxes for the periods indicated (in thousands):

	Three Months Ended September 30,						Nine Months Ended September 30,
	2022			2021			2022			2021
(Loss) income before income taxes	$	(9,313	)	$	(2,743	)	$	(21,377	)	$	9,004
Provision for income taxes		840			61			2,092			271
Net (loss) income	$	(10,153	)	$	(2,804	)	$	(23,469	)	$	8,733
Provision for income taxes as a percentage    of (loss) income before income taxes		9.0	%		2.2	%		9.8	%		3.0	%

The effective tax rate for all periods is driven by pre-tax income/(loss), business credits, equity compensation, state taxes, and the change in valuation allowance. The Company's income tax provision for interim reporting periods has historically been calculated by applying an estimate of the annual effective income tax rate for the full year to "ordinary" income (loss) for the interim reporting period, which is calculated as pre-tax income (loss) excluding unusual and infrequently occurring discrete items. For the nine months ended September 30, 2022, we calculated the income tax provision using a discrete effective income tax rate method as if the interim year to date period was an annual period. We determined that since normal changes in estimated "ordinary" income (loss) would result in disproportionate changes in the estimated annual effective income tax rate, the Company's historical method of calculating its income tax provision for interim reporting periods would not provide a reliable estimate for the nine months ended September 30, 2022.

For tax years beginning after December 31, 2021, certain research and development costs are required to be capitalized and amortized over a five year period under the Tax Cuts and Jobs Act, which was signed into law December 22, 2017. The Company has reviewed and incorporated this change, which will impact the expected U.S. federal and state tax expense and cash taxes to be paid for the tax year ending December 31, 2022.

Valuation Allowance

ASC 740 requires that the tax benefit of net operating losses, or NOLs, temporary differences and credit carryforwards be recorded as an asset to the extent that management assesses that realization is “more likely than not.” Realization of the future tax benefits is dependent on the Company’s ability to generate sufficient taxable income within the carryback or carryforward periods. As of December 31, 2021, the Company maintained a full valuation allowance of $17.9 million against the Company's net deferred tax assets. As of September 30, 2022, the Company believes that the deferred tax assets are currently not considered more likely than not to be realized and, accordingly, has maintained a full valuation allowance against its deferred tax assets. The Company will continue to assess its position on the realizability of its deferred tax assets, until such time as sufficient positive evidence may become available to allow the Company to reach a conclusion that a significant portion of the valuation allowance will no longer be needed. Any release of the valuation allowance may result in a material benefit recognized in the quarter of release.

Uncertain Tax Positions

The Company has recorded uncertain tax positions related to its federal and California research and development credit carryforwards. No interest or penalties have been recorded related to the uncertain tax positions due to credit carryforwards that are available to offset the uncertain tax positions. It is not expected that there will be a significant change in the uncertain tax position in the next twelve months. The Company is subject to U.S. federal and state income tax as well as to income tax in various foreign jurisdictions. In the normal course of business, the Company is subject to examination by tax authorities. As of the date of the financial statements, there are no income tax examinations in progress. The statute of limitations for tax years ended after December 31, 2016 and December 31, 2017 are open for state and federal tax purposes, respectively.

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Retirement Plan

9 Months Ended

Sep. 30, 2022

Retirement Benefits [Abstract]

Retirement Plan

14. Retirement Plan

In December 2017, the Company adopted the Inari Medical, Inc. 401(k) Plan which allows eligible employees after one month of service to contribute pre-tax and Roth contributions to the plan, as allowed by law. The plan assets are held by Vanguard and the plan administrator is Ascensus Trust Company. Beginning in January 2021, the Company contributes a $1.00 match for every $1.00 contributed by a participating employee up to the greater of $3,000 or 4% of eligible compensation under the plan, with such Company's contributions becoming fully vested immediately. Matching contribution expense was $1.7 million and $0.8 million for the three months ended September 30, 2022 and 2021, and $6.2 million and $2.6 million for the nine months ended September 30, 2022 and 2021, respectively. The Company recorded an out-of-period adjustment in the second quarter of 2022 resulting in additional matching contribution expense of $0.8 million for the nine months ended September 30, 2022. The out-of-period adjustment was not considered material to the fiscal 2021 or fiscal 2022 annual consolidated financial statements.

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Net Income (Loss) Per Share

9 Months Ended

Sep. 30, 2022

Earnings Per Share [Abstract]

Net Income (Loss) Per Share

15. Net Income (Loss) Per Share

The components of net income per share are as follows:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2022			2021			2022			2021
Numerator:
Net (loss) income (in thousands)	$	(10,153	)	$	(2,804	)	$	(23,469	)	$	8,733
Denominator:
Weighted average number of common shares    outstanding - basic		53,491,625			50,001,996			52,552,662			49,664,037
Common stock equivalents from outstanding    common stock options		—			—			—			2,927,569
Common stock equivalents from unvested RSUs		—			—			—			2,917,867
Common stock equivalents from ESPP		—			—			—			847
Common stock equivalents from restricted stock		—			—			—			741
Weighted average number of common shares    outstanding - diluted		53,491,625			50,001,996			52,552,662			55,511,061
Net (loss) income per share:
Basic	$	(0.19	)	$	(0.06	)	$	(0.45	)	$	0.18
Diluted	$	(0.19	)	$	(0.06	)	$	(0.45	)	$	0.16

The following outstanding potentially dilutive common stock equivalents have been excluded from the calculation of diluted net loss per share for the three and nine months ended September 30, 2022 and the three months ended September 30, 2021 due to their anti-dilutive effect:

	Three and Nine Months Ended September 30, 2022		Three Months Ended September 30, 2021
Common stock options		1,838,562		2,732,986
RSUs		3,694,930		2,778,176
Restricted stock subject to future vesting		—		741
		5,533,492		5,511,903

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Summary of Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2022

Accounting Policies [Abstract]

COVID-19 and the Act

COVID-19

The global healthcare system continues to face an unprecedented challenge as a result of the novel coronavirus, or COVID-19, situation and its impact. COVID-19 may continue to have an adverse impact on significant aspects of the Company and the business, including the demand for products, business operations, and the ability to research and develop and bring to market new products and services. To the extent individuals and hospital systems de-prioritize, delay or cancel deferrable medical procedures as a result of COVID-19, staffing or resource issues, or otherwise, the Company’s business, cash flows, financial condition and results of operations may continue to be negatively affected.

The Company continues to focus its efforts on the health and safety of patients, healthcare providers and employees, while executing its mission of transforming lives of venous thromboembolism ("VTE") patients. However, the COVID-19 pandemic may continue to negatively impact the Company's 2022 performance.

Basis of Presentation of Unaudited Interim Condensed Consolidated Financial Statements

Basis of Presentation

The accompanying condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”).

The interim condensed consolidated balance sheet as of September 30, 2022, the condensed consolidated statements of operations and comprehensive income (loss), stockholders’ equity, and cash flows for the three and nine months ended September 30, 2022 and 2021 are unaudited. The unaudited interim condensed consolidated financial statements have been prepared on the same basis as the annual consolidated financial statements and reflect, in the opinion of management, all adjustments of a normal and recurring nature that are necessary for the fair presentation of the Company’s consolidated financial position as of September 30, 2022 and its consolidated results of operations and cash flows for the three and nine months ended September 30, 2022 and 2021. The financial data and the other financial information disclosed in the notes to the condensed consolidated financial statements related to the three and nine months ended September 30, 2022 and 2021 are also unaudited. The condensed consolidated results of operations for any interim period are not necessarily indicative of the results to be expected for the full year or for any other future annual or interim period. The condensed consolidated balance sheet as of December 31, 2021 included herein was derived from the audited financial statements as of that date. These interim condensed consolidated financial statements should be read in conjunction with our audited financial statements included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2021 filed on February 23, 2022.

Principles of Consolidation

Principles of Consolidation

The condensed consolidated financial statements include the Company and its wholly owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.

Management Estimates

Management Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Significant estimates and assumptions made in the accompanying consolidated financial statements may include, but are not limited to, collectability of receivables, recoverability of long-lived assets, valuation of inventory, operating lease right-of-use ("ROU") assets and liabilities, other investments, fair value of stock options, recoverability of net deferred tax assets and related valuation allowance, and certain accruals. Estimates are based on historical experience and on various assumptions that the Company believes are reasonable under current circumstances. Actual results could differ materially from those estimates. Management periodically evaluates such estimates and assumptions, and they are adjusted prospectively based upon such periodic evaluation.

Revenue Recognition

Revenue Recognition

The Company recognizes revenue in accordance with ASC 606, Revenue from Contracts with Customers. Under ASC 606, revenue is recognized when a customer obtains control of promised goods or services, in an amount that reflects the consideration which the Company expects to receive in exchange for those goods or services. To determine revenue recognition for arrangements that are within the scope of ASC 606, the Company performs the following five steps: (i) identify the contract(s) with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when (or as) the entity satisfies a performance obligation.

The Company sells its products primarily to hospitals in the United States utilizing the Company’s direct sales force. The Company recognizes revenue for arrangements where the Company has satisfied its performance obligation of shipping or delivering the product. For sales where the Company’s sales representative hand-deliver products directly to the hospitals, control of the products transfers to the customers upon such hand delivery. For sales where products are shipped, control of the products transfers either upon shipment or delivery of the products to the customer, depending on the shipping terms and conditions. Revenue from product sales is comprised of product revenue, net of product returns, administrative fees and sales rebates.

Performance Obligation—The Company has revenue arrangements that consist of a single performance obligation, the shipping or delivery of the Company’s products. The satisfaction of this performance obligation occurs with the transfer of control of the Company’s product to its customers, either upon shipment or delivery of the product.

Revenue is measured as the amount of consideration the Company expects to receive in exchange for transferring goods. The amount of revenue recognized is based on the transaction price, which represents the invoiced amount, net of administrative fees and sales rebates, where applicable. The Company provides a standard 30-day unconditional right of return period. The Company establishes estimated provisions for returns at the time of sale based on historical experience. Historically, the actual product returns have been immaterial to the Company’s consolidated financial statements.

As of September 30, 2022 and December 31, 2021, the Company recorded $987,000 and $448,000, respectively, of unbilled receivables, which are included in accounts receivable, net, in the accompanying consolidated balance sheets.

Revenue for ClotTriever and FlowTriever products as a percentage of total revenue was derived as follow:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2022			2021			2022			2021
ClotTriever		31	%		30	%		32	%		33	%
FlowTriever		69	%		70	%		68	%		67	%

The Company offers payment terms to its customers of less than three months and these terms do not include a significant financing component. The Company excludes taxes assessed by governmental authorities on revenue-producing transactions from the measurement of the transaction price.

The Company offers its standard warranty to all customers. The Company does not sell any warranties on a standalone basis. The Company’s warranty provides that its products are free of material defects and conform to specifications, and includes an offer to repair, replace or refund the purchase price of defective products. This assurance does not constitute a service and is not considered a separate performance obligation. The Company estimates warranty liabilities at the time of revenue recognition and records it as a charge to cost of goods sold.

Costs associated with product sales include commissions and are recorded in selling, general and administrative ("SG&A") expenses. The Company applies the practical expedient and recognizes commissions as an expense when incurred because the amortization period is less than one year.

Other Investments

In March 2022, the Company made investments in certain privately held companies, with no readily determinable fair value. The Company measures these investments at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for an identical or similar investments. The Company will monitor the information that becomes available from time to time and adjust the carrying values of these investments if there are identified events or changes in circumstances that have a significant adverse effect on the fair values. As of September 30, 2022, total other investments of $5.7 million was included in deposits and other assets on the condensed consolidated balance sheets with no impairment identified.

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Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2022

Accounting Policies [Abstract]

Schedule of Revenue for Products as Percentage of Total Revenue

	Three Months Ended September 30,						Nine Months Ended September 30,
	2022			2021			2022			2021
ClotTriever		31	%		30	%		32	%		33	%
FlowTriever		69	%		70	%		68	%		67	%

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Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2022

Fair Value Disclosures [Abstract]

Schedule of Financial Assets and Liabilities Measured at Fair Value

The following tables summarize the Company’s financial assets and liabilities measured at fair value on a recurring basis by level within the fair value hierarchy as of September 30, 2022 and December 31, 2021 (in thousands):

	September 30, 2022
	Level 1		Level 2		Level 3		Aggregate Fair Value
Financial Assets
Cash and cash equivalents:
Money market mutual funds	$	21,283	$	—	$	—	$	21,283
U.S. Treasury securities		3,979		—		—		3,979
Corporate debt securities and commercial paper		—		15,973		—		15,973
Total included in cash and cash equivalents		25,262		15,973		—		41,235
Investments:
U.S. Treasury securities		178,462		—		—		178,462
U.S. Government agencies		—		26,184		—		26,184
Corporate debt securities and commercial paper		—		31,059		—		31,059
Total included in short-term investments		178,462		57,243		—		235,705
Total assets	$	203,724	$	73,216	$	—	$	276,940
	December 31, 2021
	Level 1		Level 2		Level 3		Aggregate Fair Value
Financial Assets
Cash and cash equivalents:
Money market mutual funds	$	48,595	$	—	$	—	$	48,595
Total included in cash and cash equivalents		48,595		—		—		48,595
Investments:
U.S. Treasury securities		44,322		—		—		44,322
Corporate debt securities and commercial paper		—		39,026		—		39,026
Total included in short-term investments		44,322		39,026		—		83,348
U.S. Treasury securities included in   long-term investments		3,983		—		—		3,983
Total assets	$	96,900	$	39,026	$	—	$	135,926

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Cash Equivalents and Investments (Tables)

9 Months Ended

Sep. 30, 2022

Investments, Debt and Equity Securities [Abstract]

Summary of Cash Equivalents and Investments

The following is a summary of the Company’s cash equivalents and investments in debt securities as of September 30, 2022 and December 31, 2021 (in thousands):

	September 30, 2022
	Amortized Cost Basis		Unrealized Gain		Unrealized Loss			Fair Value
Financial Assets
Cash and cash equivalents:
Money market mutual funds	$	21,283	$	—	$	—		$	21,283
U.S. Treasury securities		3,979		—		—			3,979
Corporate debt securities and commercial paper		15,936		37		—			15,973
Total included in cash and cash equivalents		41,198		37		—			41,235
Investments:
U.S. Treasury securities		178,353		363		(254	)		178,462
U.S. Government agencies		26,139		45		—			26,184
Corporate debt securities and commercial paper		31,002		84		(27	)		31,059
Total included in short-term investments		235,494		492		(281	)		235,705
Total assets	$	276,692	$	529	$	(281	)	$	276,940
	December 31, 2021
	Amortized Cost Basis		Unrealized Gain		Unrealized Loss			Fair Value
Financial Assets
Cash and cash equivalents:
Money market mutual funds	$	48,595	$	—	$	—		$	48,595
Total included in cash and cash equivalents		48,595		—		—			48,595
Investments:
U.S. Treasury securities		44,349		—		(27	)		44,322
Corporate debt securities and commercial paper		39,012		14		—			39,026
Total included in short-term investments		83,361		14		(27	)		83,348
U.S. Treasury securities included in   long-term investments		3,993		—		(10	)		3,983
Total assets	$	135,949	$	14	$	(37	)	$	135,926

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Inventories, Net (Tables)

9 Months Ended

Sep. 30, 2022

Inventory Disclosure [Abstract]

Schedule of Inventories, Net

Inventories, net of reserves as of September 30, 2022 and December 31, 2021 totaling $626,000 and $285,000, respectively, consist of the following (in thousands):

	September 30, 2022		December 31, 2021
Raw materials	$	11,700	$	5,763
Work-in-process		2,691		1,490
Finished goods		15,279		13,800
	$	29,670	$	21,053

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Property and Equipment. net (Tables)

9 Months Ended

Sep. 30, 2022

Property, Plant and Equipment [Abstract]

Schedule of Property and Equipment

Property and equipment consist of the following (in thousands):

	September 30, 2022			December 31, 2021
Manufacturing equipment	$	12,146		$	7,408
Leasehold improvements		4,932			4,712
Assets in progress		3,446			3,124
Furniture and fixtures		3,998			3,044
Computer hardware		4,592			2,864
Computer software		100			100
Total property and equipment, gross		29,214			21,252
Accumulated depreciation		(8,023	)		(4,781	)
Total property and equipment, net	$	21,191		$	16,471

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Commitments and Contingencies (Tables)

9 Months Ended

Sep. 30, 2022

Commitments and Contingencies Disclosure [Abstract]

Schedule of total lease cost

Total lease cost for the three and nine months ended September 30, 2022, are as follows (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2022		2021		2022		2021
Operating lease cost	$	1,039	$	331	$	3,139	$	702
Short-term lease cost		147		69		192		142
Variable lease cost		181		116		477		200
Total lease costs	$	1,367	$	516	$	3,808	$	1,044

Schedule of Future Minimum Lease Payments Under Operating Leases Liabilities

Future minimum lease payments under operating leases liabilities as of September 30, 2022 are as follows (in thousands):

Year ending December 31:	Amount
Remainder of 2022	$	609
2023		2,471
2024		2,550
2025		2,619
2026		2,693
Thereafter		41,478
Total lease payments		52,420
Less imputed interest		(21,455	)
Total lease liabilities		30,965
Less: lease liabilities - current portion		(588	)
Lease liabilities - noncurrent portion	$	30,377

Summary of Minimum Future Rental Payments on Operating Lease Not Yet Commenced

The following are future minimum lease payments for the lease amendment discussed above, which has not yet commenced and is not included in ROU assets and operating lease liabilities as of September 30, 2022 (in thousands):

Year ending December 31:	Amount
Remainder of 2022	$	145
2023		758
2024		584
Total lease payments	$	1,487

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Equity Incentive Plans (Tables)

9 Months Ended

Sep. 30, 2022

Summary of Stock Option Activity

A summary of stock option activities under the 2011 Plan for the nine months ended September 30, 2022 is as follows (intrinsic value in thousands):

	Number of Awards			Weighted Average Exercise Price		Weighted Average Fair Value		Weighted Average Remaining Contractual Life (in years)		Intrinsic Value
Outstanding, December 31, 2021		2,574,354		$	1.43	$	1.02		7.07	$	231,286
Exercised		(718,297	)	$	0.85	$	0.07			$	54,856
Cancelled		(17,495	)	$	2.34	$	1.41			$	1,342
Outstanding, September 30, 2022		1,838,562		$	1.64	$	1.15		6.38	$	130,529
Vested and exercisable at September 30, 2022		1,449,196		$	1.32	$	0.96		6.26	$	103,352
Vested and expected to vest at September 30, 2022		1,826,633		$	1.63	$	1.14		6.38	$	129,708

Summary of RSU Activity

RSU activities under the 2020 Plan is set forth below:

	Number of Awards			Weighted Average Fair Value
Outstanding, December 31, 2021		611,205		$	88.34
Granted		602,831			73.94
Vested		(189,006	)		84.52
Cancelled		(42,774	)		84.77
Outstanding, September 30, 2022		982,256		$	80.39

Schedule of Total Compensation Cost for All Share-Based Payment Arrangements Recognized

Total compensation cost for all share-based payment arrangements recognized, including $780,000 and $546,000 for the three months ended September 30, 2022 and 2021 and $2.5 million and $1.9 million for the nine months ended September 30, 2022 and 2021, respectively, related to the Employee Stock Purchase Plan, was as follows (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2022		2021		2022		2021
Cost of goods sold	$	386	$	218	$	1,126	$	597
Research and development		1,051		580		3,143		1,601
Selling, general and administrative		5,919		11,701		16,806		18,741
	$	7,356	$	12,499	$	21,075	$	20,939

2020 Employee Share Purchase Plan

Schedule of Estimated Fair Value of Option Grant and ESPP

The fair value of the ESPP shares is estimated using the Black-Scholes option pricing model with the following assumptions:

	Nine Months Ended September 30,
	2022	2021
Expected term (in years)	0.5	0.5
Expected volatility	56.09%	51.91%
Dividend yield	0.00%	0.00%
Risk free interest rate	0.48%	0.08%

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Income Taxes (Tables)

9 Months Ended

Sep. 30, 2022

Income Tax Disclosure [Abstract]

Schedule of Provision for Income Taxes

The following table reflects the Company’s provision for income taxes for the periods indicated (in thousands):

	Three Months Ended September 30,						Nine Months Ended September 30,
	2022			2021			2022			2021
(Loss) income before income taxes	$	(9,313	)	$	(2,743	)	$	(21,377	)	$	9,004
Provision for income taxes		840			61			2,092			271
Net (loss) income	$	(10,153	)	$	(2,804	)	$	(23,469	)	$	8,733
Provision for income taxes as a percentage    of (loss) income before income taxes		9.0	%		2.2	%		9.8	%		3.0	%

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Net Income (Loss) Per Share (Tables)

9 Months Ended

Sep. 30, 2022

Earnings Per Share [Abstract]

Components of Net Income per Share

The components of net income per share are as follows:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2022			2021			2022			2021
Numerator:
Net (loss) income (in thousands)	$	(10,153	)	$	(2,804	)	$	(23,469	)	$	8,733
Denominator:
Weighted average number of common shares    outstanding - basic		53,491,625			50,001,996			52,552,662			49,664,037
Common stock equivalents from outstanding    common stock options		—			—			—			2,927,569
Common stock equivalents from unvested RSUs		—			—			—			2,917,867
Common stock equivalents from ESPP		—			—			—			847
Common stock equivalents from restricted stock		—			—			—			741
Weighted average number of common shares    outstanding - diluted		53,491,625			50,001,996			52,552,662			55,511,061
Net (loss) income per share:
Basic	$	(0.19	)	$	(0.06	)	$	(0.45	)	$	0.18
Diluted	$	(0.19	)	$	(0.06	)	$	(0.45	)	$	0.16

Schedule of Outstanding Potentially Dilutive Common Stock Equivalents Excluded from Calculation of Diluted Net Loss Per Share

The following outstanding potentially dilutive common stock equivalents have been excluded from the calculation of diluted net loss per share for the three and nine months ended September 30, 2022 and the three months ended September 30, 2021 due to their anti-dilutive effect:

	Three and Nine Months Ended September 30, 2022		Three Months Ended September 30, 2021
Common stock options		1,838,562		2,732,986
RSUs		3,694,930		2,778,176
Restricted stock subject to future vesting		—		741
		5,533,492		5,511,903

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Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)	Sep. 30, 2022	Dec. 31, 2021
Summary of Significant Accounting Policies [Line Items]
Other investments	$ 5,700,000
Accounts Receivable, Net
Summary of Significant Accounting Policies [Line Items]
Unbilled receivables	$ 987,000	$ 448,000

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Summary of Significant Accounting Policies - Schedule of Revenue for Products as Percentage of Total Revenue (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
ClotTriever Products
Revenue from External Customer [Line Items]
Percentage of total revenue	31.00%	30.00%	32.00%	33.00%
FlowTriever Products
Revenue from External Customer [Line Items]
Percentage of total revenue	69.00%	70.00%	68.00%	67.00%

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Fair Value Measurements - Schedule of Financial Assets and Liabilities Measured at Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Level 1
Assets
Total included in cash and cash equivalents	$ 25,262	$ 48,595
Total included in short-term investments	178,462	44,322
Assets Fair Value Disclosure, Total	203,724	96,900
Level 1 | US Treasury Securities
Assets
Total included in cash and cash equivalents	3,979
Total included in short-term investments	178,462	44,322
Level 1 | US Treasury Securities | Long-Term Investments
Assets
Total included in short-term investments		3,983
Level 1 | U.S. Government Agencies
Assets
Total included in short-term investments	0
Level 1 | Corporate Debt Securities and Commercial Paper
Assets
Total included in cash and cash equivalents	0
Total included in short-term investments	0	0
Level 1 | Money Market Mutual Funds
Assets
Total included in cash and cash equivalents	21,283	48,595
Level 2
Assets
Total included in cash and cash equivalents	15,973	0
Total included in short-term investments	57,243	39,026
Assets Fair Value Disclosure, Total	73,216	39,026
Level 2 | US Treasury Securities
Assets
Total included in cash and cash equivalents	0
Total included in short-term investments	0	0
Level 2 | US Treasury Securities | Long-Term Investments
Assets
Total included in short-term investments		0
Level 2 | U.S. Government Agencies
Assets
Total included in short-term investments	26,184
Level 2 | Corporate Debt Securities and Commercial Paper
Assets
Total included in cash and cash equivalents	15,973
Total included in short-term investments	31,059	39,026
Level 2 | Money Market Mutual Funds
Assets
Total included in cash and cash equivalents	0	0
Level 3
Assets
Total included in cash and cash equivalents	0	0
Total included in short-term investments	0	0
Assets Fair Value Disclosure, Total	0	0
Level 3 | US Treasury Securities
Assets
Total included in cash and cash equivalents	0
Total included in short-term investments	0	0
Level 3 | US Treasury Securities | Long-Term Investments
Assets
Total included in short-term investments		0
Level 3 | U.S. Government Agencies
Assets
Total included in short-term investments	0
Level 3 | Corporate Debt Securities and Commercial Paper
Assets
Total included in cash and cash equivalents	0
Total included in short-term investments	0	0
Level 3 | Money Market Mutual Funds
Assets
Total included in cash and cash equivalents	0	0
Fair Value Measurements Recurring
Assets
Total included in cash and cash equivalents	41,235	48,595
Total included in short-term investments	235,705	83,348
Assets Fair Value Disclosure, Total	276,940	135,926
Fair Value Measurements Recurring | US Treasury Securities
Assets
Total included in cash and cash equivalents	3,979
Total included in short-term investments	178,462	44,322
Fair Value Measurements Recurring | US Treasury Securities | Long-Term Investments
Assets
Total included in short-term investments		3,983
Fair Value Measurements Recurring | U.S. Government Agencies
Assets
Total included in short-term investments	26,184
Fair Value Measurements Recurring | Corporate Debt Securities and Commercial Paper
Assets
Total included in cash and cash equivalents	15,973
Total included in short-term investments	31,059	39,026
Fair Value Measurements Recurring | Money Market Mutual Funds
Assets
Total included in cash and cash equivalents	$ 21,283	$ 48,595

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Fair Value Measurements - Additional Information (Details)	Sep. 30, 2022 USD ($)
Fair Value Disclosures [Abstract]
Fair value, assets, Level 1 to Level 2 transfers, amount	$ 0
Fair value, assets, Level 2 to Level 1 transfers, amount	0
Fair value, liabilities, Level 1 to Level 2 transfers, amount	0
Fair value, liabilities, Level 2 to Level 1 transfers, amount	$ 0

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Cash Equivalents and Investments - Summary of Cash Equivalents and Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Schedule Of Investment Income Reported Amounts By Category [Line Items]
Cash Equivalents and Short-Term Investments, Amortized Cost Basis	$ 276,692	$ 135,949
Cash Equivalents and Short-Term Investments, Unrealized Gain	529	14
Cash Equivalents and Short-Term Investments, Unrealized Loss	(281)	(37)
Cash Equivalents and Short-Term Investments, Fair Value	276,940	135,926
Short-Term Investments
Schedule Of Investment Income Reported Amounts By Category [Line Items]
Cash Equivalents and Short-Term Investments, Amortized Cost Basis	235,494	83,361
Cash Equivalents and Short-Term Investments, Unrealized Gain	492	14
Cash Equivalents and Short-Term Investments, Unrealized Loss	(281)	(27)
Cash Equivalents and Short-Term Investments, Fair Value	235,705	83,348
Short-Term Investments | US Treasury Securities
Schedule Of Investment Income Reported Amounts By Category [Line Items]
Cash Equivalents and Short-Term Investments, Amortized Cost Basis	178,353	44,349
Cash Equivalents and Short-Term Investments, Unrealized Gain	363	0
Cash Equivalents and Short-Term Investments, Unrealized Loss	(254)	(27)
Cash Equivalents and Short-Term Investments, Fair Value	178,462	44,322
Short-Term Investments | U.S. Government Agencies
Schedule Of Investment Income Reported Amounts By Category [Line Items]
Cash Equivalents and Short-Term Investments, Amortized Cost Basis	26,139
Cash Equivalents and Short-Term Investments, Unrealized Gain	45
Cash Equivalents and Short-Term Investments, Unrealized Loss	0
Cash Equivalents and Short-Term Investments, Fair Value	26,184
Short-Term Investments | Corporate Debt Securities and Commercial Paper
Schedule Of Investment Income Reported Amounts By Category [Line Items]
Cash Equivalents and Short-Term Investments, Amortized Cost Basis	31,002	39,012
Cash Equivalents and Short-Term Investments, Unrealized Gain	84	14
Cash Equivalents and Short-Term Investments, Unrealized Loss	(27)	0
Cash Equivalents and Short-Term Investments, Fair Value	31,059	39,026
Long-Term Investments
Schedule Of Investment Income Reported Amounts By Category [Line Items]
Cash Equivalents and Short-Term Investments, Amortized Cost Basis		3,993
Cash Equivalents and Short-Term Investments, Unrealized Gain		0
Cash Equivalents and Short-Term Investments, Unrealized Loss		(10)
Cash Equivalents and Short-Term Investments, Fair Value		3,983
Cash and Cash Equivalents
Schedule Of Investment Income Reported Amounts By Category [Line Items]
Cash Equivalents and Short-Term Investments, Amortized Cost Basis	41,198	48,595
Cash Equivalents and Short-Term Investments, Unrealized Gain	37	0
Cash Equivalents and Short-Term Investments, Unrealized Loss	0	0
Cash Equivalents and Short-Term Investments, Fair Value	41,235	48,595
Cash and Cash Equivalents | Money Market Mutual Funds
Schedule Of Investment Income Reported Amounts By Category [Line Items]
Cash Equivalents and Short-Term Investments, Amortized Cost Basis	21,283	48,595
Cash Equivalents and Short-Term Investments, Unrealized Gain	0	0
Cash Equivalents and Short-Term Investments, Unrealized Loss	0	0
Cash Equivalents and Short-Term Investments, Fair Value	21,283	$ 48,595
Cash and Cash Equivalents | US Treasury Securities
Schedule Of Investment Income Reported Amounts By Category [Line Items]
Cash Equivalents and Short-Term Investments, Amortized Cost Basis	3,979
Cash Equivalents and Short-Term Investments, Unrealized Gain	0
Cash Equivalents and Short-Term Investments, Unrealized Loss	0
Cash Equivalents and Short-Term Investments, Fair Value	3,979
Cash and Cash Equivalents | Corporate Debt Securities and Commercial Paper
Schedule Of Investment Income Reported Amounts By Category [Line Items]
Cash Equivalents and Short-Term Investments, Amortized Cost Basis	15,936
Cash Equivalents and Short-Term Investments, Unrealized Gain	37
Cash Equivalents and Short-Term Investments, Unrealized Loss	0
Cash Equivalents and Short-Term Investments, Fair Value	$ 15,973

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Inventories, Net - Additional Information (Details) - USD ($)	Sep. 30, 2022	Dec. 31, 2021
Inventory Disclosure [Abstract]
Inventory reserves	$ 626,000	$ 285,000

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Inventories, Net - Schedule of Inventories, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Inventory Disclosure [Abstract]
Raw materials	$ 11,700	$ 5,763
Work in process	2,691	1,490
Finished goods	15,279	13,800
Inventory, net	$ 29,670	$ 21,053

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Property and Equipment. net - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 29,214	$ 21,252
Accumulated depreciation	(8,023)	(4,781)
Property and equipment, net	21,191	16,471
Manufacturing Equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	12,146	7,408
Leasehold Improvements
Property Plant And Equipment [Line Items]
Property and equipment, gross	4,932	4,712
Assets In Progress
Property Plant And Equipment [Line Items]
Property and equipment, gross	3,446	3,124
Furniture and Fixtures
Property Plant And Equipment [Line Items]
Property and equipment, gross	3,998	3,044
Computer Hardware
Property Plant And Equipment [Line Items]
Property and equipment, gross	4,592	2,864
Computer Software
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 100	$ 100

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Property and Equipment. net - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Property Plant And Equipment [Line Items]
Depreciation expense			$ 3,430,000	$ 2,108,000
SG&A Expenses
Property Plant And Equipment [Line Items]
Depreciation expense	$ 947,000	$ 648,000	2,774,000	1,633,000
Cost of Goods Sold
Property Plant And Equipment [Line Items]
Depreciation expense	$ 223,000	$ 172,000	$ 656,000	$ 475,000

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Commitments and Contingencies - Additional Information (Details)		1 Months Ended			3 Months Ended		9 Months Ended
	Mar. 31, 2019 ExtensionPeriod	Oct. 31, 2022	Oct. 31, 2020 USD ($) ExtensionPeriod	Mar. 31, 2019	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)
Lessee Lease Description [Line Items]
Operating lease, number of extension options | ExtensionPeriod			2
Operating lease right-of-use assets			$ 42,200,000		$ 49,951,000		$ 49,951,000		$ 44,909,000
Operating lease liability			$ 28,600,000		$ 30,965,000		$ 30,965,000
Operating lease, remaining lease term			226 months
Weighted average incremental borrowing rate					6.10%		6.10%
Cash paid for amounts included in the measurement of lease liabilities					$ 705,000	$ 186,000	$ 2,030,000	$ 557,000
Administration fee					29,000	29,000	87,000	87,000
Research and Development Expense					19,105,000	12,499,000	53,809,000	32,292,000
Research and Development Expense Accrued					1,200,000		1,200,000
Other Liabilities, Noncurrent					0		0		1,416,000
Accrued expenses and other current liabilities					7,668,000		7,668,000		$ 10,737,000
Prepaid OperatingLeasePayments			$ 7,300,000
Tenant allowance			13,500,000
Tenant allowance related to prepaid lease payments			3,700,000
Bank Guarantee Deposit
Lessee Lease Description [Line Items]
Secured debt					200,000		200,000
Inceptus Medical Inc [Member]
Lessee Lease Description [Line Items]
Royalty Expense					1,500	$ 201,000	215,000	$ 586,000
Research and Development Expense [Member]
Lessee Lease Description [Line Items]
Research and Development Expense							4,200,000
Accrued expenses and other current liabilities					$ 1,200,000		$ 1,200,000
Letter of Credit
Lessee Lease Description [Line Items]
Secured debt			$ 1,500,000
Maximum
Lessee Lease Description [Line Items]
Operating lease, term of contract	12 months			12 months
Maximum | Inceptus Medical Inc [Member]
Lessee Lease Description [Line Items]
Related party transaction, rate							1.50%
Minimum | Inceptus Medical Inc [Member]
Lessee Lease Description [Line Items]
Payments for Royalties							$ 1,500
Related party transaction, rate							1.00%
Irvine, California
Lessee Lease Description [Line Items]
Operating lease, term of contract	5 years		10 years	5 years
Operating lease, expiration date	Sep. 30, 2024
Operating lease, number of extension options | ExtensionPeriod	2
Option to extend, operating lease, term	5 years		5 years	5 years
Operating lease, Existence of option to extend			true	true
Irvine, California | Subsequent Event
Lessee Lease Description [Line Items]
Operating lease, expiration date		Sep. 30, 2024
Switzerland
Lessee Lease Description [Line Items]
Operating lease, term of contract					5 years		5 years
Option to extend, operating lease, term					5 years		5 years
Operating lease, remaining lease term					117 months		117 months
Oak Canyon [Member]
Lessee Lease Description [Line Items]
Operating lease right-of-use assets					$ 47,600,000		$ 47,600,000
Operating lease liability					$ 28,400,000		$ 28,400,000

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Commitments and Contingencies - Schedule of total lease cost (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Lessee, Lease, Description [Line Items]
Operating Lease, Cost	$ 1,039	$ 331	$ 3,139	$ 702
Short-term Lease, Cost	147	69	192	142
Variable Lease, Cost	181	116	477	200
Leasehold Improvements
Lessee, Lease, Description [Line Items]
Lease, Cost, Total	$ 1,367	$ 516	$ 3,808	$ 1,044

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Commitments and Contingencies - Schedule of Future Minimum Lease Payments Under Operating Leases Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021	Oct. 31, 2020
Lessee, Operating Lease, Liability, to be Paid [Abstract]
Remainder of 2022	$ 609
2023	2,471
2024	2,550
2025	2,619
2026	2,693
Thereafter	41,478
Total lease payments	52,420
Less imputed interest	(21,455)
Operating Lease, Liability, Total	30,965		$ 28,600
Less: lease liabilities - current portion	(588)	$ (802)
Lease liabilities - noncurrent portion	$ 30,377	$ 28,404

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Commitments and Contingencies - Summary of Minimum Future Rental Payments on Operating Lease Not Yet Commenced (Details) $ in Thousands	Sep. 30, 2022 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Remainder of 2022	$ 145
2023	758
2024	584
Total lease payments	$ 1,487

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Concentrations - Additional Information (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022 Customer Vendor	Sep. 30, 2021 Customer Vendor	Sep. 30, 2022 Vendor Customer	Sep. 30, 2021 Vendor Customer	Dec. 31, 2021 Vendor Customer
Revenue | Customer Concentration Risk
Concentration Risk [Line Items]
Number of customers | Customer	0	0	0	0
Revenue | Customer Concentration Risk | Minimum [Member]
Concentration Risk [Line Items]
Concentration risk	10.00%	10.00%	10.00%	10.00%
Accounts Receivable | Customer Concentration Risk
Concentration Risk [Line Items]
Number of customers | Customer			0		0
Accounts Receivable | Customer Concentration Risk | Minimum [Member]
Concentration Risk [Line Items]
Concentration risk			10.00%		10.00%
Purchases | Supplier Concentration Risk
Concentration Risk [Line Items]
Number of vendor | Vendor	0	0	0	0
Purchases | Supplier Concentration Risk | Minimum [Member]
Concentration Risk [Line Items]
Concentration risk	10.00%	10.00%	10.00%	10.00%
Accounts Payable | Supplier Concentration Risk
Concentration Risk [Line Items]
Number of vendor | Vendor			0		0
Accounts Payable | Supplier Concentration Risk | Minimum [Member]
Concentration Risk [Line Items]
Concentration risk			10.00%		10.00%

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Related Party - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Related Party Transaction [Line Items]
Administration fee	$ 29,000	$ 29,000	$ 87,000	$ 87,000
MRI The Hoffman Group
Related Party Transaction [Line Items]
Due to related parties	0		0		$ 0
Inceptus
Related Party Transaction [Line Items]
Royalty expense	1,500	201,000	$ 215,000	586,000
Inceptus | Minimum
Related Party Transaction [Line Items]
Related party transaction, rate			1.00%
Royalty quarterly fee			$ 1,500
Inceptus | Maximum
Related Party Transaction [Line Items]
Related party transaction, rate			1.50%
Recruiting Services | MRI The Hoffman Group | Operating expenses
Related Party Transaction [Line Items]
Development expenses incurred	$ 70,000	$ 38,000	$ 262,000	$ 301,000

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Debt - Additional Information (Details)	1 Months Ended		9 Months Ended	12 Months Ended
	Sep. 30, 2022 USD ($) LetterOfCredit	Sep. 30, 2020 USD ($)	Sep. 30, 2022 USD ($) LetterOfCredit	Dec. 31, 2021 USD ($) LetterOfCredit
Debt Instrument [Line Items]
Number of Letter of Credit | LetterOfCredit	4		4	2
Bank of America Credit Facility | Credit Agreement
Debt Instrument [Line Items]
Line of credit facility covenant terms	The Credit Agreement contains certain customary covenants and events of default.
Bank of America Credit Facility | Senior Secured Revolving Credit Facility | Credit Agreement
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity		$ 30,000,000
Percentage of accounts receivable available to borrow		85.00%
Principal amount outstanding			$ 0	$ 0
Line of credit facility, remaining borrowing capacity	$ 28,000,000.0		28,000,000.0	28,000,000.0
Cash pledged under credit agreement	$ 0		0	0
Interest on loans outstanding payable	monthly
Debt maturity month and year	2023-09
Bank of America Credit Facility | Senior Secured Revolving Credit Facility | Credit Agreement | Federal Funds Rate
Debt Instrument [Line Items]
Debt instrument, description of variable rate basis	the Federal funds rate plus 0.50%
Term loan variable interest rate	0.50%
Bank of America Credit Facility | Senior Secured Revolving Credit Facility | Credit Agreement | LIBOR
Debt Instrument [Line Items]
Debt instrument, description of variable rate basis	the LIBOR rate based upon an interest period of 30 days plus 1.00%.
Term loan variable interest rate	1.00%
Bank of America Credit Facility | Senior Secured Revolving Credit Facility | Credit Agreement | LIBOR | LIBOR Loans
Debt Instrument [Line Items]
Term loan variable interest rate	2.00%
Bank of America Credit Facility | Senior Secured Revolving Credit Facility | Credit Agreement | Maximum
Debt Instrument [Line Items]
Term loan variable interest rate	1.50%
Unused line fee at annual rate	0.375%
Bank of America Credit Facility | Senior Secured Revolving Credit Facility | Credit Agreement | Maximum | LIBOR | LIBOR Loans
Debt Instrument [Line Items]
Term loan variable interest rate	2.50%
Bank of America Credit Facility | Senior Secured Revolving Credit Facility | Credit Agreement | Minimum
Debt Instrument [Line Items]
Term loan variable interest rate	1.00%
Unused line fee at annual rate	0.25%
Bank of America Credit Facility | Letter of Credit Subline Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 5,000,000		5,000,000
Percentage of fee on average daily stated amount of outstanding letter of credit	2.25%
Percentage of fronting fee on stated amount of each letter of credit outstanding	0.125%
Letters of credit outstanding amount	$ 2,000,000.0		$ 2,000,000.0	$ 1,800,000

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Stockholder's Equity- Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended	3 Months Ended	9 Months Ended
	Mar. 31, 2022	Mar. 31, 2022	Mar. 31, 2022	Sep. 30, 2022	Sep. 30, 2021	Mar. 31, 2021
Class Of Stock [Line Items]
Underwriters' discounts and commissions		$ 11,200
Net proceeds from IPO		$ 174,400		$ 174,394	$ 0
Offering costs	$ 700
IPO [Member]
Class Of Stock [Line Items]
Public offering price						$ 81.00
Stock issued	2,300,000
Over-Allotment Option [Member]
Class Of Stock [Line Items]
Sale of stock, shares issued		300,000
Common Stock
Class Of Stock [Line Items]
Stock issued			2,300,000

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Equity Incentive Plans - Additional Information (Details) - USD ($)	1 Months Ended			3 Months Ended					9 Months Ended		12 Months Ended
	Jul. 31, 2022	May 31, 2020	Mar. 31, 2019	Sep. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Mar. 31, 2021	Mar. 31, 2020	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021	Jan. 01, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares of common stock reserved for future issuance												503,135
Stock-based compensation expense				$ 7,356,000		$ 12,499,000			$ 21,075,000	$ 20,939,000
Compensation costs related to all non-vested awards to be recognized in future				$ 67,000,000.0					$ 67,000,000.0
Non vested stock awards, expected remaining weighted average period									2 years 10 months 24 days
Common stock purchased under ESPP	78,707
Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock purchased under ESPP				78,707	54,808	48,168	36,881
Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting period			4 years
Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense				$ 780,000		$ 546,000			$ 2,500,000	1,900,000
2020 Incentive Award Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares of common stock reserved for future issuance								3,468,048
Percentage of annual increase in shares reserved for issuance on capital stock outstanding at year end								3.00%
Number of shares available for issuance				5,696,304					5,696,304
Number of shares granted									602,831
Restricted stock units, vested									189,006
Outstanding balance				982,256					982,256		611,205
Weighted Average Fair Value, Granted									$ 73.94
2020 Incentive Award Plan | Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting period									4 years
Share-based compensation vesting rights, terms									The RSUs generally vest over a four-year period with straight-line vesting and a 25% one-year cliff or over a three-year period in equal amounts on a quarterly basis, provided the employee remains continuously employed with the Company.
2020 Incentive Award Plan | Employee Stock Purchase Plan | Share Based Compensation Award Tranche One
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Cliff vesting, percentage									25.00%
2020 Incentive Award Plan | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Term of award								10 years
2011 Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares of common stock reserved for future issuance				1,509,404					1,509,404
Total fair value of RSUs vested				$ 4,500,000		$ 11,400,000			$ 15,300,000	$ 15,100,000
2011 Equity Incentive Plan | Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock units, vested				0					0
Outstanding balance				2,712,674					2,712,674		2,712,674
Weighted Average Fair Value, Granted									$ 0.17		$ 0.17
2020 Employee Share Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares of common stock reserved for future issuance				1,767,957					1,767,957
First offering start date		Aug. 01, 2020
Percentage of purchase price on fair market value of common stock		85.00%
2020 Employee Share Purchase Plan | Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock purchased under ESPP									218,564

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Equity Incentive Plans - Summary of Stock Option Activity (Details) - 2011 Equity Incentive Plan $ / shares in Units, $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2022 USD ($) $ / shares shares	Dec. 31, 2021 USD ($) $ / shares shares
Number of Awards
Number of Awards, Outstanding, Beginning balance | shares	2,574,354
Number of Awards, Exercised | shares	(718,297)
Number of Awards, Cancelled | shares	(17,495)
Number of Awards, Outstanding, Ending balance | shares	1,838,562	2,574,354
Number of Awards, Vested and exercisable | shares	1,449,196
Number of Awards, Vested and expected to vest | shares	1,826,633
Weighted Average Exercise Price
Weighted Average Exercise Price, Outstanding, Beginning balance	$ 1.43
Weighted Average Exercise Price, Exercised	0.85
Weighted Average Exercise Price, Cancelled	2.34
Weighted Average Exercise Price, Outstanding, Ending balance	1.64	$ 1.43
Weighted Average Exercise Price, Vested and exercisable	1.32
Weighted Average Exercise Price, Vested and expected to vest	1.63
Weighted Average Fair Value
Weighted Average Fair Value, Outstanding, Beginning balance	1.02
Weighted Average Fair Value, Exercised	0.07
Weighted Average Fair Value, Cancelled	1.41
Weighted Average Fair Value, Outstanding, Ending balance	1.15	$ 1.02
Weighted Average Fair Value, Vested and exercisable	0.96
Weighted Average Fair Value, Vested and expected to vest	$ 1.14
Weighted Average Remaining Contractual Life (in years)
Weighted Average Remaining Contractual Life (in years), Outstanding	6 years 4 months 17 days	7 years 25 days
Weighted Average Remaining Contractual Life (in years), Vested and exercisable	6 years 3 months 3 days
Weighted Average Remaining Contractual Life (in years), Vested and expected to vest	6 years 4 months 17 days
Intrinsic Value
Intrinsic Value, Outstanding, Beginning balance | $	$ 231,286
Intrinsic Value, Exercised | $	54,856
Intrinsic Value, Cancelled | $	1,342
Intrinsic Value, Outstanding, Ending balance | $	130,529	$ 231,286
Intrinsic Value, Vested and exercisable | $	103,352
Intrinsic Value, Vested and expected to vest | $	$ 129,708

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Equity Incentive Plans - Schedule of Estimated Fair Value of Option Grant and ESPP on Date of Grant (Details) - 2020 Employee Share Purchase Plan	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected remaining term in years	6 months	6 months
Expected volatility	56.09%	51.91%
Dividend yield	0.00%	0.00%
Risk free interest rate	0.48%	0.08%

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Equity Incentive Plans - Summary of RSU Activity (Details) - 2020 Incentive Award Plan	9 Months Ended
	Sep. 30, 2022 $ / shares shares
Number of Awards
Number of Awards, Outstanding, Beginning balance | shares	611,205
Number of shares granted | shares	602,831
Number of Awards, Vested | shares	(189,006)
Number of Awards, Cancelled | shares	(42,774)
Number of Awards, Outstanding, Ending balance | shares	982,256
Weighted Average Fair Value
Weighted Average Fair Value, Outstanding, Beginning balance | $ / shares	$ 88.34
Weighted Average Fair Value, Granted | $ / shares	73.94
Weighted Average Fair Value, Vested | $ / shares	84.52
Weighted Average Fair Value, Cancelled | $ / shares	84.77
Weighted Average Fair Value, Outstanding, Ending balance | $ / shares	$ 80.39

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Equity Incentive Plans - Schedule of Total Compensation Cost for All Share-Based Payment Arrangements Recognized (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total compensation cost	$ 7,356	$ 12,499	$ 21,075	$ 20,939
Cost of Goods Sold
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total compensation cost	386	218	1,126	597
Research and Development Expense
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total compensation cost	1,051	580	3,143	1,601
Selling, General and Administrative
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total compensation cost	$ 5,919	$ 11,701	$ 16,806	$ 18,741

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Income Taxes - Schedule of Provision (Benefit) for Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Tax Disclosure [Abstract]
(Loss) income before income taxes	$ (9,313)			$ (2,743)			$ (21,377)	$ 9,004
Provision for income taxes	840			61			2,092	271
Net (loss) income	$ (10,153)	$ (10,187)	$ (3,129)	$ (2,804)	$ 4,068	$ 7,469	$ (23,469)	$ 8,733
Provision for income taxes as a percentage of (loss) income before income taxes	9.00%			2.20%			9.80%	3.00%

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Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Deferred tax assets, valuation allowance		$ 17,900
Interest or penalties related to uncertain tax positions	$ 0
Significant change in unrecognized tax position, description	It is not expected that there will be a significant change in the uncertain tax position in the next twelve months.
Income tax examination, description	In the normal course of business, the Company is subject to examination by tax authorities. As of the date of the financial statements, there are no income tax examinations in progress. The statute of limitations for tax years ended after December 31, 2016 and December 31, 2017 are open for state and federal tax purposes, respectively.

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Retirement Plan - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Defined Benefit Plan Disclosure [Line Items]
401 (k) Plan			us-gaap:QualifiedPlanMember
Employer contributions by plan participant			$ 1.00
Employee contributions by plan participant			$ 1.00
Participating employee eligible compensation			4.00%
Matching contribution expense recognized	$ 1,700,000	$ 800,000	$ 6,200,000	$ 2,600,000
Additional matching contribution expense			800,000
Maximum
Defined Benefit Plan Disclosure [Line Items]
Participating employee up to greater			$ 3,000

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Net Income (Loss) Per Share - Computation of Net Income per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021
Numerator:
Net income	$ (10,153)	$ (10,187)	$ (3,129)	$ (2,804)	$ 4,068	$ 7,469	$ (23,469)	$ 8,733
Weighted average common shares used to compute net (loss) income per share
Basic	53,491,625			50,001,996			52,552,662	49,664,037
Weighted average number of common shares outstanding - diluted	53,491,625			50,001,996			52,552,662	55,511,061
Earnings Per Share, Basic [Abstract]
Basic	$ (0.19)			$ (0.06)			$ (0.45)	$ 0.18
Earnings Per Share, Diluted [Abstract]
Diluted	$ (0.19)			$ (0.06)			$ (0.45)	$ 0.16
Common Stock Options
Weighted average common shares used to compute net (loss) income per share
Common stock equivalents	0			0			0	2,927,569
Unvested RSUs
Weighted average common shares used to compute net (loss) income per share
Common stock equivalents	0			0			0	2,917,867
ESPP
Weighted average common shares used to compute net (loss) income per share
Common stock equivalents	0			0			0	847
Restricted Stock
Weighted average common shares used to compute net (loss) income per share
Common stock equivalents	0			0			0	741

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Net Income (Loss) Per Share - Schedule of Outstanding Potentially Dilutive Common Stock Equivalents Excluded from Calculation (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	5,533,492	5,511,903	5,533,492
Common Stock Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	1,838,562	2,732,986	1,838,562
RSUs
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	3,694,930	2,778,176	3,694,930
Restricted Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	0	741	0

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Subsequent Events - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Subsequent Event [Line Items]
Stock-based compensation expense	$ 7,356	$ 12,499	$ 21,075	$ 20,939