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v3.20.4

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Cash flows from operating activities: |  |
Net loss | $ (86,483) | $ (51,000)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Depreciation and amortization | 1,491 | 1,303
Amortization of debt discount and debt issuance costs | 58 |
Gain or loss on sale of property and equipment | 28 | (8)
Equity-based compensation | 11,175 | 7,972
Amortization/accretion of investment securities | (162) | (1,390)
Non-cash operating lease expense | 2,380 | 997
Deferred payroll tax credit |  | 176
Change in operating assets and liabilities: |  |
Accounts receivable | 25,000 | (25,000)
Prepaid expenses and other current assets | (3,361) | (739)
Other assets | (923) | (98)
Accounts payable | 2,101 | (1,342)
Accrued expenses | 5,089 | 2,453
Operating lease liabilities | (1,261) | (888)
Deferred revenue | (15,403) | 4,508
Other liabilities |  | (59)
Net cash used in operating activities | (60,271) | (63,115)
Cash flows from investing activities: |  |
Purchases of property and equipment | (4,088) | (3,115)
Purchases of marketable securities | (200,110) | (235,417)
Sales and maturities of marketable securities | 140,700 | 176,288
Proceeds from sale of property and equipment |  | 8
Net cash used in investing activities | (63,498) | (62,236)
Cash flows from financing activities: |  |
Principal payments on debt |  | (365)
Proceeds from debt | 24,622 |
Proceeds from sale of common shares and pre-funded warrants, net of issuance costs | 215,922 | 48,348
Proceeds from stock option exercises | 7,294 | 913
Other | (19) | (13)
Net cash provided by financing activities | 247,819 | 48,883
Net increase (decrease) in cash and cash equivalents and restricted cash | 124,050 | (76,468)
Cash and cash equivalents and restricted cash, beginning of period | 38,806 | 115,274
Cash and cash equivalents and restricted cash, end of period | 162,856 | 38,806
Supplemental disclosure of non-cash items: |  |
Property and equipment purchases in accounts payable and accrued expenses | 1,368 |
Operating lease right-of-use asset obtained in exchange for operating lease obligation | 31,286 | $ 5,444
Supplemental cash flow information: |  |
Cash paid for interest | $ 251 |

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