| Mar'20 | Dec'19 | Sep'19 | Jun'19 | Mar'19 | Dec'18 | Sep'18 | Jun'18 | Mar'18 | Dec'17 | Sep'17 | Jun'17 | Mar'17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Operating Activities | ||||||||||||
Net loss | ||||||||||||
-20,318 | -19,088 | -17,439 | -15,922 | -12,850 | -10,889 | -8,574 | -11,093 | -9,576 | -7,920 | 0 | 0 | 0 |
Adjustments to reconcile net loss to net cash used in operating activities | ||||||||||||
Depreciation | ||||||||||||
951 | 748 | 559 | 406 | 255 | 141 | 94 | 61 | 40 | 23 | 0 | 0 | 0 |
Stock-based compensation expense | ||||||||||||
1,465 | 1,239 | 1,218 | 1,218 | 1,040 | 792 | 548 | 323 | 220 | 246 | 0 | 0 | 0 |
Non-cash interest expense | ||||||||||||
- | - | - | - | - | - | - | - | - | 3,263 | 0 | 0 | 0 |
(Increase) decrease in | ||||||||||||
Prepaid expenses and other current assets | ||||||||||||
431 | 891 | 832 | 321 | 555 | 321 | 229 | 136 | 268 | 77 | 0 | 0 | 0 |
Prepaid rent | ||||||||||||
0 | - | - | - | - | - | - | - | - | - | - | - | - |
Amortization of right-of-use asset, net | ||||||||||||
185 | 226 | 0 | 0 | 0 | - | - | - | - | - | - | - | - |
Accounts payable | ||||||||||||
-538 | -199 | 153 | 504 | 799 | 112 | -9 | -27 | 13 | 133 | 0 | 0 | 0 |
Accrued expenses and other current liabilities | ||||||||||||
656 | 547 | 854 | 971 | 877 | 644 | 88 | 470 | 336 | 442 | 0 | 0 | 0 |
Net cash used in operating activities | ||||||||||||
-21,725 | -18,713 | -15,185 | -12,882 | -10,291 | -9,445 | 0 | 0 | 0 | - | - | - | - |
Investing Activities | ||||||||||||
Net cash used in operating activities | ||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | 0 |
Purchases of property and equipment | ||||||||||||
6,200 | 6,399 | 0 | 0 | 0 | - | - | - | - | 210 | 0 | 0 | 0 |
Purchases of short-term investments | ||||||||||||
10,028 | 8,573 | 0 | 0 | 0 | - | - | - | - | - | - | - | - |
Proceeds from maturities of short-term investments | ||||||||||||
0 | - | - | - | - | - | - | - | - | - | - | - | - |
Purchase of other noncurrent assets | ||||||||||||
- | - | - | - | 0 | - | - | - | - | - | - | - | - |
Net cash used in investing activities | ||||||||||||
-3,791 | -4,968 | 0 | 0 | 0 | - | - | - | - | - | - | - | - |
Financing Activities | ||||||||||||
Net cash used in investing activities | ||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | 0 |
Proceeds from the issuance of convertible promissory notes | ||||||||||||
- | - | - | - | - | - | - | - | - | 1,299 | 0 | 0 | 0 |
Issuance of common stock, net | ||||||||||||
107,728 | 107,525 | 171,514 | 167,896 | 73,881 | 73,847 | 0 | 0 | 0 | - | - | - | - |
Net cash provided by financing activities | ||||||||||||
107,728 | 107,525 | 171,514 | 167,896 | 73,881 | 73,847 | 0 | 0 | 0 | - | - | - | - |
Net cash provided by financing activities | ||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | 0 |
Net decrease in cash and cash equivalents | ||||||||||||
82,212 | 83,844 | 148,139 | 144,774 | 50,785 | 54,079 | -5,903 | 38,295 | 45,269 | 47,668 | 0 | 0 | 0 |
Supplemental Disclosures of Non-Cash Investing and Financing Activities | ||||||||||||
Unpaid purchases of property and equipment | ||||||||||||
1,608 | 681 | 0 | 0 | 0 | - | - | - | - | - | - | - | - |
Unpaid offering costs | ||||||||||||
0 | - | - | 0 | 0 | - | - | - | - | - | - | - | - |
Unpaid deferred offering costs | ||||||||||||
- | - | - | - | - | - | - | - | 0 | - | - | - | - |
Initial recognition of right-of-use assets | ||||||||||||
- | - | - | - | 0 | - | - | - | - | - | - | - | - |
Conversion of preferred units to preferred stock | ||||||||||||
- | - | - | - | - | - | - | - | - | - | - | 0 | 0 |