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v3.22.0.1

Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Cash flows from operating activities: |  |  |
Net income (loss) | $ 32,277 | $ (9,372) | $ (6,607)
Adjustments to reconcile net loss to net cash provided by operating activities |  |  |
Depreciation and amortization expense | 7,926 | 6,402 | 8,273
Stock-based compensation expense | 29,992 | 16,009 | 1,379
Inventory write-down | 1,817 | 1,446 | 321
Impairment of internal-use software | 0 | 959 |
Other | 117 | 106 | 9
Changes in assets and liabilities: |  |  |
Accounts receivable | 14,456 | 6,261 | (1,521)
Related party accounts receivable | 736 | 337 | 363
Inventories | (13,096) | (2,070) | 8,144
Prepaid expenses and other assets | (1,859) | 2,951 | (3,145)
Accounts payable | 5,826 | 2,606 | (1,148)
Accrued expenses and other liabilities | 9,798 | 3,491 | (1,732)
Net cash provided by operating activities | 59,078 | 16,604 | 7,378
Cash flows from investing activities |  |  |
Purchase of property and equipment | (30,878) | (6,098) | (1,426)
Cash paid for intangibles | (2,910) | (1,695) | (1,776)
Net cash used in investing activities | (33,788) | (7,793) | (3,202)
Cash flows from financing activities |  |  |
Proceeds from public offering, net of underwriting discounts and commissions and other offering costs | 460,646 | 45,789 | 56,353
Tax withholding paid on behalf of employees for net share settlement | 0 | (3,493) | 0
Proceeds from loans from financial institutions | 0 | 35,000 | 0
Principal payments on loans to financial institutions | 0 | (76,000) | (2,000)
Principal payments on loan to MegaChips | 0 | 0 | (3,000)
Net cash provided by financing activities | 460,646 | 1,296 | 51,353
Net increase in cash and cash equivalents | 485,936 | 10,107 | 55,529
Cash and cash equivalents |  |  |
Beginning of period | 73,525 | 63,418 | 7,889
End of period | 559,461 | 73,525 | 63,418
Supplemental disclosure of cash flow information |  |  |
Interest paid during the period | 0 | 799 | 2,167
Income taxes paid | 24 | 1 | 1
Supplemental disclosure of noncash flow information |  |  |
Unpaid property and equipment | 1,437 | 343 | 77
Unpaid intangibles, net | 3,178 | 0 | 0
Right-of-use assets acquired under operating leases | $ 689 | $ 382 | $ 10,763

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