| 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 | ||||||||
-25,973 | -22,662 | -17,145 | -16,055 | -17,103 | -16,021 | -11,591 | -10,507 | -8,242 |
Adjustments to reconcile net loss to net cash used in operating activities: | ||||||||
Depreciation and amortization expense | ||||||||
283 | 245 | 215 | 200 | 190 | 184 | 130 | 45 | 21 |
Stock-based compensation expense | ||||||||
2,822 | 1,885 | 1,797 | 1,663 | 1,455 | 1,079 | 551 | 457 | 109 |
Amortization of deferred offering costs | ||||||||
- | - | - | - | - | 4 | 11 | 11 | 11 |
Impairment loss of property and equipment | ||||||||
- | - | - | - | - | 0 | 0 | 0 | 235 |
Deferred rent expense | ||||||||
-53 | -49 | -42 | -41 | -40 | -42 | -40 | -15 | -8 |
Change in fair value of preferred stock warrant liability | ||||||||
- | - | - | - | - | 0 | 0 | 150 | 12 |
Change in fair value of derivative liability | ||||||||
- | - | - | - | - | 0 | 0 | -1,042 | -587 |
Changes in operating assets and liabilities: | ||||||||
Prepaid expenses and other current assets | ||||||||
-976 | 1,272 | -505 | 2,636 | 1,485 | 1,899 | 370 | 579 | 189 |
Other assets | ||||||||
-319 | - | - | - | - | -268 | 83 | -6 | 306 |
Accounts payable | ||||||||
-1,443 | 2,155 | -1,153 | -645 | 671 | 1,189 | -2,200 | 1,591 | 1,438 |
Accrued expenses and other current liabilities | ||||||||
635 | 1,343 | 2,397 | -394 | -1,426 | 3,804 | 1,607 | -450 | 352 |
Net cash used in operating activities | ||||||||
-22,434 | -18,583 | -13,382 | -17,965 | -17,738 | -11,434 | -11,985 | -8,249 | -5,980 |
Cash flows from investing activities: | ||||||||
Purchases of property and equipment | ||||||||
577 | 766 | 78 | 401 | 340 | 493 | 915 | 161 | 263 |
Net cash used in investing activities | ||||||||
-577 | -766 | -78 | -401 | -340 | -234 | -1,198 | -137 | -263 |
Cash flows from financing activities: | ||||||||
Proceeds from exercise of stock options | ||||||||
35 | 3 | 9 | 238 | 252 | - | - | - | - |
Proceeds from issuance of redeemable convertible preferred stock, net of issuance costs | ||||||||
- | - | - | - | - | -1 | 0 | -5 | 58,263 |
Proceeds from issuance of common shares upon completion of public offering, net of offering costs | ||||||||
93,628 | - | - | - | - | - | - | - | - |
Payments of initial public offering costs | ||||||||
- | - | - | - | - | - | - | - | 55 |
Net cash provided by financing activities | ||||||||
93,663 | 30 | 129,474 | 238 | 252 | -139 | -3,255 | 105,473 | 58,208 |
Net increase (decrease) in cash, cash equivalents and restricted cash | ||||||||
70,652 | -19,319 | 116,014 | -18,128 | -17,826 | -11,807 | -16,438 | 97,087 | 51,965 |
Supplemental disclosure of non-cash investing and financing activities: | ||||||||
Purchases of property and equipment included in accounts payable and accrued expenses | ||||||||
- | - | - | - | - | 20 | -520 | 668 | 88 |
Property and equipment held for sale | ||||||||
- | - | - | - | 336 | 0 | 0 | 0 | 19 |
Offering costs included in accrued expenses and accounts payable | ||||||||
249 | - | - | - | - | - | - | - | - |
Deferred offering costs included in accrued expenses | ||||||||
- | - | - | - | - | - | - | 734 | 507 |
Purchase of property and equipment paid for by landlord | ||||||||
- | - | - | - | - | 0 | 0 | 661 | 181 |
Accretion of issuance costs related to redeemable convertible preferred stock | ||||||||
- | - | - | - | - | 3 | 0 | 0 | 2,240 |