| 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 | ||||||||||||
-5,341 | -5,357 | -4,272 | -5,348 | -4,111 | -3,708 | -2,755 | -2,276 | -2,150 | -1,393 | -5,274 | -759 | -494 |
Adjustments to reconcile net loss to net cash used in operating activities | ||||||||||||
Depreciation | ||||||||||||
335 | 250 | 191 | 175 | 132 | 61 | 38 | 24 | 18 | 14 | 5 | 3 | 1 |
Stock-based compensation expense | ||||||||||||
539 | 323 | 278 | 325 | 313 | 302 | 278 | 147 | 65 | 58 | 53 | 44 | 91 |
Non-cash interest expense | ||||||||||||
- | - | - | - | - | - | - | - | - | 0 | 3,190 | 43 | 30 |
(Increase) decrease in | ||||||||||||
Prepaid expenses and other current assets | ||||||||||||
-108 | 426 | 528 | -415 | 352 | 367 | 17 | -181 | 118 | 275 | -76 | -49 | -73 |
Prepaid rent | ||||||||||||
2,400 | - | - | - | - | - | - | - | - | - | - | - | - |
Amortization of right-of-use asset, net | ||||||||||||
26 | 26 | 68 | 65 | 67 | - | - | - | - | - | - | - | - |
Accounts payable | ||||||||||||
244 | -369 | -243 | -170 | 583 | -17 | 108 | 125 | -104 | -138 | 90 | 165 | 16 |
Accrued expenses and other current liabilities | ||||||||||||
262 | -144 | 263 | 275 | 153 | 163 | 380 | 181 | -80 | -393 | 762 | 47 | 26 |
Net cash used in operating activities | ||||||||||||
-6,227 | -7,046 | -4,243 | -4,209 | -3,215 | -3,518 | -1,940 | -1,618 | -2,369 | - | - | - | - |
Investing Activities | ||||||||||||
Net cash used in operating activities | ||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | -257 |
Purchases of property and equipment | ||||||||||||
1,508 | 2,279 | 1,175 | 1,238 | 1,707 | - | - | - | - | 159 | 12 | 32 | 7 |
Purchases of short-term investments | ||||||||||||
1,967 | 1,706 | 2,218 | 4,137 | 512 | - | - | - | - | - | - | - | - |
Proceeds from maturities of short-term investments | ||||||||||||
2,170 | - | - | - | - | - | - | - | - | - | - | - | - |
Purchase of other noncurrent assets | ||||||||||||
- | - | - | - | 263 | - | - | - | - | - | - | - | - |
Net cash used in investing activities | ||||||||||||
-1,305 | -545 | -705 | -1,236 | -2,482 | - | - | - | - | - | - | - | - |
Financing Activities | ||||||||||||
Net cash used in investing activities | ||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | -7 |
Proceeds from the issuance of convertible promissory notes | ||||||||||||
- | - | - | - | - | - | - | - | - | 0 | 0 | 999 | 300 |
Issuance of common stock, net | ||||||||||||
243 | 299 | 13,167 | 94,019 | 40 | 64,288 | 9,549 | 4 | 6 | - | - | - | - |
Net cash provided by financing activities | ||||||||||||
243 | 299 | 13,167 | 94,019 | 40 | 64,288 | 9,549 | 4 | 6 | - | - | - | - |
Net cash provided by financing activities | ||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | 300 |
Net decrease in cash and cash equivalents | ||||||||||||
-7,289 | -7,292 | 8,219 | 88,574 | -5,657 | 57,003 | 4,854 | -5,415 | -2,363 | -2,979 | 49,052 | 1,559 | 36 |
Supplemental Disclosures of Non-Cash Investing and Financing Activities | ||||||||||||
Unpaid purchases of property and equipment | ||||||||||||
1,302 | -345 | 713 | -62 | 375 | - | - | - | - | - | - | - | - |
Unpaid offering costs | ||||||||||||
22 | - | - | 35 | 155 | - | - | - | - | - | - | - | - |
Unpaid deferred offering costs | ||||||||||||
- | - | - | - | - | - | - | - | 1 | - | - | - | - |
Initial recognition of right-of-use assets | ||||||||||||
- | - | - | - | 3,394 | - | - | - | - | - | - | - | - |
Conversion of preferred units to preferred stock | ||||||||||||
- | - | - | - | - | - | - | - | - | - | - | 0 | 1,306 |