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v3.22.1

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Cash flows from operating activities |  |
Net loss | $ (66,443) | $ (51,272)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Depreciation and amortization expense | 2,913 | 2,729
Amortization of premiums and discounts on marketable securities | 334 | 367
Stock-based compensation | 5,274 | 5,286
Changes in operating assets and liabilities: |  |
Accounts receivable | (4,520) | 15,934
Inventory | (210) | (6,172)
Prepaid expenses and other current assets | 6,457 | (1,239)
Other non current assets | 801 | 3,673
Accounts payable | (11,920) | 1,829
Accrued expenses and other current liabilities | (543) | 855
Lease liabilities | (1,119) | (683)
Deferred revenue | 11,280 | (601)
Other non current liabilities | 0 | 258
Net cash used in operating activities | (57,696) | (29,036)
Cash flows from investing activities |  |
Purchases of marketable securities | (54,077) | (93,881)
Proceeds from sale and maturities of marketable securities | 37,010 | 60,250
Purchases of property, equipment and software | (1,415) | (626)
Net cash used in investing activities | (18,482) | (34,257)
Cash flows from financing activities |  |
Proceeds from issuance of common stock, net of offering costs | 0 | 98,200
Proceeds from stock option exercises | 37 | 2,458
Net cash provided by financing activities | 37 | 100,658
Net change in cash and cash equivalents | (76,141) | 37,365
Cash and cash equivalents at beginning of period | 123,469 | 181,131
Cash and cash equivalents at end of period | 47,328 | 218,496
Supplemental Cash Flow Information [Abstract] |  |
Property, equipment and software included in accounts payable or accruals | $ 151 | $ 486

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- Definition Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3521-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3044-108585 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=123431023&loc=SL98516268-108586 + Details
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