| Dec'19 | Dec'18 | Dec'17 | ||||
|---|---|---|---|---|---|---|
Cash flows from operating activities: | ||||||
Net loss | ||||||
-72,965 | -46,361 | -18,648 | ||||
Adjustments to reconcile net loss to net cash used in operating activities: | ||||||
Depreciation and amortization expense | ||||||
850 | 380 | 45 | ||||
Stock-based compensation expense | ||||||
6,800 | 2,196 | 177 | ||||
Amortization of deferred offering costs | ||||||
- | 37 | 24 | ||||
Impairment loss of property and equipment | ||||||
0 | 235 | - | ||||
Deferred rent expense | ||||||
-172 | -105 | 134 | ||||
Change in fair value of preferred stock warrant liability | ||||||
- | 162 | 17 | ||||
Change in fair value of derivative liability | ||||||
- | -1,629 | -283 | ||||
Changes in operating assets and liabilities: | ||||||
Prepaid expenses and other current assets | ||||||
4,888 | 3,037 | 326 | ||||
Other assets | ||||||
241 | 115 | 218 | ||||
Accounts payable | ||||||
1,028 | 2,018 | 176 | ||||
Accrued expenses and other current liabilities | ||||||
1,920 | 5,313 | 1,454 | ||||
Other long-term liability | ||||||
- | - | 500 | ||||
Net cash used in operating activities | ||||||
-67,668 | -37,648 | -16,382 | ||||
Cash flows from investing activities: | ||||||
Purchases of property and equipment | ||||||
1,585 | 1,832 | 383 | ||||
Net cash used in investing activities | ||||||
-1,585 | -1,832 | -383 | ||||
Cash flows from financing activities: | ||||||
Payment of dilution liability | ||||||
- | 2,000 | - | ||||
Proceeds from exercise of stock options | ||||||
502 | 17 | - | ||||
Proceeds from issuance of redeemable convertible preferred stock, net of issuance costs | ||||||
- | 58,257 | 17,415 | ||||
Proceeds from issuance of common shares upon completion of public offering, net of offering costs | ||||||
129,465 | 104,013 | - | ||||
Proceeds from the issuance of shares under the employee stock purchase plan | ||||||
27 | - | - | ||||
Payments of issuance costs on debt facility | ||||||
- | - | 44 | ||||
Net cash provided by financing activities | ||||||
129,994 | 160,287 | 17,371 | ||||
Net increase (decrease) in cash, cash equivalents and restricted cash | ||||||
60,741 | 120,807 | 606 | ||||
Supplemental disclosure of non-cash investing and financing activities: | ||||||
Purchases of property and equipment included in accounts payable and accrued expenses | ||||||
582 | 256 | 11 | ||||
Property and equipment held for sale | ||||||
- | 19 | - | ||||
Deferred offering costs included in accrued expenses and accounts payable | ||||||
104 | - | - | ||||
Issuance of warrants associated with debt facility | ||||||
- | - | 18 | ||||
Deferred offering costs included in accrued expenses | ||||||
- | - | 85 | ||||
Purchase of property and equipment paid for by landlord | ||||||
- | 842 | - | ||||
Accretion of issuance costs related to redeemable convertible preferred stock | ||||||
- | 2,243 | 85 | ||||