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v3.22.2

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2022 | Jun. 30, 2021
Operating activities: |  |
Net loss | $ (283,746) | $ (179,879)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Depreciation and amortization | 7,631 | 5,262
Premium amortization and discount accretion on investment securities | 2,960 | 3,790
Stock-based compensation | 76,060 | 58,335
Non-cash lease expense | 6,652 | 5,357
Amortization of debt discount and issuance cost | 625 | 610
Inventory reserve adjustments | 181 | 612
Other non-cash benefits | 39 | 117
Provision for credit losses | 1,501 | 63
Gain (loss) on investments | 203 | (35)
Changes in operating assets and liabilities: |  |
Accounts receivable | (87,738) | (21,628)
Inventory | (3,737) | (8,991)
Prepaid expenses and other current assets | 4,727 | (2,497)
Accounts payable | 2,492 | 12,313
Accrued compensation | (7,982) | 471
Operating lease liabilities | (5,528) | (4,992)
Other accrued liabilities | 29,525 | 24,374
Deferred revenue | 8,009 | (38,721)
Cash used in operating activities | (248,126) | (145,439)
Investing activities: |  |
Purchases of investments | (79,956) | (71,054)
Proceeds from sale of investments | 191,939 | 31,144
Proceeds from maturity of investments | 153,500 | 205,510
Purchases of property and equipment, net | (23,661) | (18,891)
Cash provided by investing activities | 241,822 | 146,709
Financing activities: |  |
Proceeds from exercise of stock options | 4,578 | 6,829
Proceeds from issuance of common stock under employee stock purchase plan | 8,496 | 6,085
Cash provided by financing activities | 13,074 | 12,914
Net increase in cash, cash equivalents and restricted cash | 6,770 | 14,184
Cash, cash equivalents and restricted cash, beginning of period | 84,614 | 48,855
Cash, cash equivalents and restricted cash, end of period | 91,384 | 63,039
Supplemental disclosure of cash flow information: |  |
Cash paid for interest | 3,612 | 3,538
Non-cash investing and financing activities: |  |
Purchases of property and equipment in accounts payable and accruals | $ 2,035 | $ 4,688

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