| Mar'20 | Dec'19 | Sep'19 | Jun'19 | Mar'19 | Dec'18 | Sep'18 | Jun'18 | Mar'18 |
|---|---|---|---|---|---|---|---|---|
Cash flows from operating activities: | ||||||||
Net loss | ||||||||
-81,835 | -72,965 | -66,324 | -60,770 | -55,222 | -46,361 | 0 | 0 | 0 |
Adjustments to reconcile net loss to net cash used in operating activities: | ||||||||
Depreciation and amortization expense | ||||||||
943 | 850 | 789 | 704 | 549 | 380 | 0 | 0 | 0 |
Stock-based compensation expense | ||||||||
8,167 | 6,800 | 5,994 | 4,748 | 3,542 | 2,196 | 0 | 0 | 0 |
Amortization of deferred offering costs | ||||||||
- | - | - | - | - | 37 | 0 | 0 | 0 |
Impairment loss of property and equipment | ||||||||
- | - | - | - | - | 235 | 0 | 0 | 0 |
Deferred rent expense | ||||||||
-185 | -172 | -165 | -163 | -137 | -105 | 0 | 0 | 0 |
Change in fair value of preferred stock warrant liability | ||||||||
- | - | - | - | - | 162 | 0 | 0 | 0 |
Change in fair value of derivative liability | ||||||||
- | - | - | - | - | -1,629 | 0 | 0 | 0 |
Changes in operating assets and liabilities: | ||||||||
Prepaid expenses and other current assets | ||||||||
2,427 | 4,888 | 5,515 | 6,390 | 4,333 | 3,037 | 0 | 0 | 0 |
Other assets | ||||||||
0 | - | - | - | - | 115 | 0 | 0 | 0 |
Accounts payable | ||||||||
-1,086 | 1,028 | 62 | -985 | 1,251 | 2,018 | 0 | 0 | 0 |
Accrued expenses and other current liabilities | ||||||||
3,981 | 1,920 | 4,381 | 3,591 | 3,535 | 5,313 | 0 | 0 | 0 |
Net cash used in operating activities | ||||||||
-72,364 | -67,668 | -60,519 | -59,122 | -49,406 | -37,648 | 0 | 0 | 0 |
Cash flows from investing activities: | ||||||||
Purchases of property and equipment | ||||||||
1,822 | 1,585 | 1,312 | 2,149 | 1,909 | 1,832 | 0 | 0 | 0 |
Net cash used in investing activities | ||||||||
-1,822 | -1,585 | -1,053 | -2,173 | -1,909 | -1,832 | 0 | 0 | 0 |
Cash flows from financing activities: | ||||||||
Proceeds from exercise of stock options | ||||||||
285 | 502 | 0 | 0 | 0 | - | - | - | - |
Proceeds from issuance of redeemable convertible preferred stock, net of issuance costs | ||||||||
- | - | - | - | - | 58,257 | 0 | 0 | 0 |
Proceeds from issuance of common shares upon completion of public offering, net of offering costs | ||||||||
0 | - | - | - | - | - | - | - | - |
Payments of initial public offering costs | ||||||||
- | - | - | - | - | - | - | - | 0 |
Net cash provided by financing activities | ||||||||
223,405 | 129,994 | 129,825 | -2,904 | 102,331 | 160,287 | 0 | 0 | 0 |
Net increase (decrease) in cash, cash equivalents and restricted cash | ||||||||
149,219 | 60,741 | 68,253 | -64,199 | 51,016 | 120,807 | 0 | 0 | 0 |
Supplemental disclosure of non-cash investing and financing activities: | ||||||||
Purchases of property and equipment included in accounts payable and accrued expenses | ||||||||
- | - | - | - | - | 256 | 0 | 0 | 0 |
Property and equipment held for sale | ||||||||
- | - | - | - | 336 | 19 | 0 | 0 | 0 |
Offering costs included in accrued expenses and accounts payable | ||||||||
0 | - | - | - | - | - | - | - | - |
Deferred offering costs included in accrued expenses | ||||||||
- | - | - | - | - | - | - | 0 | 0 |
Purchase of property and equipment paid for by landlord | ||||||||
- | - | - | - | - | 842 | 0 | 0 | 0 |
Accretion of issuance costs related to redeemable convertible preferred stock | ||||||||
- | - | - | - | - | 2,243 | 0 | 0 | 0 |