| 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 | ||||||||
-9,822 | - | - | - | -7,479 | - | - | - | - |
Net loss | ||||||||
- | - | - | - | - | - | - | -5,317 | -1,847 |
Adjustments to reconcile net loss to net cash used in operating activities: | ||||||||
Stock-based compensation | ||||||||
998 | 802 | 905 | 846 | 780 | 654 | 683 | 779 | 135 |
Accretion of discounts on marketable securities | ||||||||
93 | 183 | 238 | 283 | 359 | - | - | - | - |
Depreciation expense | ||||||||
14 | 26 | 16 | 11 | 11 | - | - | - | - |
Non cash interest expense | ||||||||
65 | - | - | - | - | - | - | - | - |
Reduction in operating lease right-of-use asset | ||||||||
66 | 67 | 67 | 30 | 29 | - | - | - | - |
Changes in operating assets and liabilities: | ||||||||
Prepaid expenses and other assets | ||||||||
-701 | 2 | 1,977 | -404 | 46 | -373 | 261 | 35 | 1,000 |
Other receivable - related party | ||||||||
- | - | - | - | 6 | - | - | - | - |
Accounts payable | ||||||||
-82 | 174 | 56 | -182 | 215 | -145 | 341 | 116 | 457 |
Accrued expenses and other current liabilities | ||||||||
279 | - | - | - | 4 | - | - | - | - |
Accrued expenses | ||||||||
- | - | - | - | - | 171 | 46 | 743 | 108 |
Accounts payable and accrued expenses - related party | ||||||||
- | - | - | - | -38 | - | - | - | - |
Accounts payable and accrued expenses - related party | ||||||||
- | - | - | - | - | - | - | 29 | -7 |
Operating lease liability | ||||||||
-32 | -31 | -30 | -30 | -28 | - | - | - | - |
Net cash used in operating activities | ||||||||
-7,906 | -8,213 | -7,228 | -5,050 | -6,917 | -6,903 | -5,137 | -3,680 | -2,154 |
Cash flows from investing activities | ||||||||
Sales and maturities of marketable securities | ||||||||
24,355 | 24,500 | 22,650 | 28,200 | 42,365 | - | - | - | - |
Purchases of marketable securities | ||||||||
5,382 | 16,623 | 23,999 | 27,937 | 21,295 | - | - | - | - |
Purchases of property and equipment | ||||||||
699 | - | - | - | - | 650 | 13 | 94 | 17 |
Net cash provided by investing activities | ||||||||
18,274 | 6,650 | -2,028 | 263 | 21,070 | -21,146 | -58,637 | -94 | -17 |
Cash flows from financing activities | ||||||||
Proceeds from exercise of stock options | ||||||||
7 | 204 | 4 | 212 | 3 | - | - | - | - |
Proceeds from issuance of debt, net | ||||||||
34,460 | - | - | - | - | - | - | - | - |
Repayment of subscription receivable | ||||||||
-410 | - | - | - | - | - | - | - | - |
Net cash provided by financing activities | ||||||||
34,877 | 204 | 4 | 212 | 3 | 9 | -1,064 | 79,438 | 20,993 |
Net increase in cash and cash equivalents | ||||||||
45,245 | - | - | - | 14,156 | - | - | - | - |
Net increase in cash and cash equivalents | ||||||||
- | - | - | - | - | - | - | 75,664 | 18,822 |
Supplemental disclosure of noncash investing and financing activities: | ||||||||
Property and equipment purchases payable or accrued at period end | ||||||||
333 | - | -93 | 249 | 285 | - | - | 4 | 2 |
Debt discount costs included in accrued expense at period end | ||||||||
125 | - | - | - | - | - | - | - | - |
Deferred offering costs included in accounts payable and accrued expenses | ||||||||
- | - | - | - | - | - | - | - | 472 |
Series C Convertible Preferred Stock [Member] | ||||||||
Payment of stock issuance costs | ||||||||
- | - | - | - | - | - | - | 0 | 7 |
Proceeds received from subscription receivable / issuance of preferred stock | ||||||||
- | - | - | - | - | 7 | -7 | 0 | 21,000 |