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v3.20.4

Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Cash flows from operating activities: |  |  |
Net loss | $ (52,752) | $ (12,443) | $ (29,886)
Adjustments to reconcile net loss to net cash used in operating activities: |  |  |
Depreciation and amortization | 13,299 | 8,106 | 4,921
Non-cash lease expense | 2,341 |  |
Share-based compensation expense | 27,279 | 12,807 | 2,241
Loss on sale of fixed assets | 222 | 93 | 76
Amortization of debt issuance costs | 256 | 181 | 109
Loss on extinguishment of debt | 1,538 | 0 | 0
Change in preferred and common stock warrant liabilities | 0 | 12,503 | 1,120
Net change in operating assets and liabilities: |  |  |
Accounts receivable | 4,516 | (27,454) | (9,045)
Inventories | (38,863) | (51,339) | (22,113)
Prepaid expenses and other assets | (9,699) | (2,362) | 325
Accounts payable | 16,027 | 10,149 | 10,455
Accrued expenses and other current liabilities | (1,965) | 2,743 | 3,798
Operating lease liabilities | (2,194) |  |
Long-term liabilities | 0 | 21 | 278
Net cash used in operating activities | (39,995) | (46,995) | (37,721)
Cash flows used in investing activities: |  |  |
Purchases of property, plant and equipment | (57,696) | (23,795) | (22,228)
Asset acquisition | (15,482) | 0 | 0
Proceeds from sale of fixed assets | 0 | 0 | 67
Purchases of property, plant and equipment held for sale | (2,288) | (2,123) | (1,022)
Proceeds from sale of assets held for sale | 599 | 299 | 0
Payment of security deposits | (33) | (545) | (59)
Net cash used in investing activities | (74,900) | (26,164) | (23,242)
Cash flows from financing activities: |  |  |
Proceeds from issuance of common stock pursuant to the initial public offering, net of issuance costs | 0 | 254,868 | 0
Proceeds from issuance of common stock pursuant to the secondary public offering, net of issuance costs | 0 | 37,394 | 0
Proceeds from revolving credit facility | 50,000 | 0 | 0
Proceeds from revolving credit line | 0 | 0 | 6,000
Proceeds from term loan borrowing | 0 | 0 | 20,000
Proceeds from equipment loan borrowing | 0 | 0 | 5,000
Proceeds from payoff of notes receivable for restricted stock purchase | 0 | 0 | 951
Debt issuance costs | (1,224) | 0 | (437)
Debt extinguishment costs | (1,200) | 0 | 0
Repayments on revolving credit facility | (25,000) | 0 | 0
Repayments on revolving credit line | (6,000) | 0 | (2,500)
Repayment on term loan | (20,000) | 0 | (1,000)
Repayment of equipment loan | (5,000) | 0 | 0
Repayment of Missouri Note | 0 | 0 | (1,450)
Principal payments under finance lease obligations | (70) |  |
Principal payments under finance lease obligations |  | (55) | (153)
Proceeds from exercise of stock options | 9,007 | 2,669 | 1,369
Proceeds from restricted stock exercise | 0 | 0 | 2
Payments of minimum withholding taxes on net share settlement of equity awards | (2,275) | 0 | 0
Payments of deferred offering costs | 0 | 0 | (2,415)
Payment for repurchase of common stock | 0 | 0 | (514)
Net cash (used in) provided by financing activities | (1,762) | 294,876 | 76,199
Net (decrease) increase in cash and cash equivalents | (116,657) | 221,717 | 15,236
Cash and cash equivalents at the beginning of the period | 275,988 | 54,271 | 39,035
Effect of exchange rate changes on cash | (204) | 0 | 0
Cash and cash equivalents at the end of the period | 159,127 | 275,988 | 54,271
Cash paid during the period for: |  |  |
Interest | 2,564 | 3,019 | 924
Taxes | 18 | 9 | 4
Non-cash investing and financing activities: |  |  |
Finance lease obligations for the purchase of property, plant and equipment | 0 | 225 | 85
Issuance of convertible preferred stock warrants in connection with debt | 0 | 0 | 248
Non-cash additions to property, plant and equipment | 10,719 | 1,418 | 1,146
Offering costs, accrued not yet paid | 0 | 0 | 745
Operating lease right-of-use assets obtained in exchange for lease liabilities | 4,706 |  |
Note receivable from sale of assets held for sale | 4,558 | 0 | 0
Reclassification of warrant liability to additional paid-in capital in connection with the initial public offering | 0 | 14,421 | 0
Conversion of convertible preferred stock to common stock upon initial public offering | 0 | 199,540 | 0
Series H |  |  |
Cash flows from financing activities: |  |  |
Proceeds from preferred stock offering, net of offering costs | 0 | 0 | 49,999
Series G |  |  |
Cash flows from financing activities: |  |  |
Proceeds from preferred stock offering, net of offering costs | $ 0 | $ 0 | $ 1,347

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