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v3.22.1

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Cash flows from operating activities: |  |
Net loss | $ (59,853) | $ (53,019)
Adjustments to reconcile net loss to cash used in operating activities: |  |
Depreciation and amortization | 3,324 | 2,860
Stock-based compensation expense | 3,796 | 2,173
Change in fair value of redeemable convertible preferred stock warrants and derivative liability | (199) | 114
Non-cash lease adjustment | (345) | (157)
Inventory write-down | 650 | 109
Other non-cash expense | 0 | 60
Changes in operating assets and liabilities: |  |
Accounts receivable, net | (2,914) | (511)
Inventory | (6,124) | (3,105)
Prepaid expenses and other current assets | (2,631) | (339)
Accounts payable | 812 | (205)
Accrued compensation | 1,834 | 2,302
Accrued interest expense | 1,045 | 1,049
Deferred revenue | 792 | 127
Other liabilities | 2,479 | 199
Net cash used in operating activities | (57,334) | (48,343)
Cash flows from investing activities: |  |
Purchases of property and equipment | (592) | (233)
Net cash (used in) provided by investing activities | (592) | (233)
Cash flows from financing activities: |  |
Proceeds from issuance of common stock from the exercise of stock options | 4,184 | 2,288
Proceeds from issuance of common stock from the initial public offering, net of underwriting discounts, commissions and offering expenses | 172,364 | 0
Proceeds from issuance of note payable, net of issuance costs | 0 | 24,685
Proceeds from the exercise of redeemable convertible preferred stock warrants | 858 | 3,310
Net cash provided by financing activities | 262,116 | 106,771
Net increase in cash, cash equivalents and restricted cash | 204,190 | 58,195
Cash, cash equivalents, and restricted cash - Beginning of period | 100,907 | 42,712
Cash, cash equivalents, and restricted cash - End of period | 305,097 | 100,907
Reconciliation of cash, cash equivalents and restricted cash to balance sheets: |  |
Cash and cash equivalents | 304,320 | 100,130
Restricted cash | 777 | 777
Cash, cash equivalents and restricted cash in balance sheets | 305,097 | 100,907
Supplemental cash flow information |  |
Interest paid | 4,750 | 3,969
Non-cash investing and financing activities |  |
Transfer of evaluation units from inventory to property and equipment, net | (679) | 2,822
Property and equipment included in accounts payable and accrued expenses | 210 | 210
Conversion of redeemable convertible preferred stock to common stock | 329,534 | 0
Series F |  |
Cash flows from financing activities: |  |
Proceeds from issuance of redeemable convertible preferred stock, net of issuance costs | 0 | $ 76,488
Series G |  |
Cash flows from financing activities: |  |
Proceeds from issuance of redeemable convertible preferred stock, net of issuance costs | $ 84,710 |

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