| 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 | ||||||||
-12,772 | -9,098 | -11,306 | -8,654 | -9,345 | -5,313 | -4,792 | -3,147 | -4,201 |
Adjustments to reconcile net loss to net cash used in operating activities: | ||||||||
Stock-based compensation | ||||||||
2,622 | 1,868 | 1,911 | 1,814 | 1,871 | 1,231 | 327 | 362 | 392 |
Depreciation and amortization | ||||||||
249 | 204 | 175 | 202 | 193 | 186 | 180 | 188 | 168 |
Bad debts expense | ||||||||
192 | - | - | - | 0 | - | - | - | - |
Accretion on marketable securities | ||||||||
25 | 125 | 348 | 461 | 479 | 209 | 0 | 0 | 0 |
Amortization of debt issuance costs | ||||||||
65 | - | - | - | 65 | - | - | - | - |
Amortization of debt discount | ||||||||
- | - | - | - | - | - | - | 65 | 65 |
Change in fair value of redeemable convertible preferred stock warrants | ||||||||
- | - | - | - | - | 145 | 457 | 145 | 79 |
Loss on sale and disposal of property and equipment | ||||||||
0 | -19 | -54 | -1 | -97 | 43 | -47 | -8 | -40 |
Changes in operating assets and liabilities: | ||||||||
Accounts receivable | ||||||||
-2,207 | 1,853 | 467 | 1,003 | -87 | 1,382 | -160 | 39 | -233 |
Inventory | ||||||||
256 | 530 | 483 | 927 | 165 | 301 | 138 | 99 | 221 |
Prepaid expenses and other assets | ||||||||
-581 | 909 | -292 | -269 | 167 | 1,247 | -258 | -518 | 281 |
Accounts payable | ||||||||
76 | -143 | 188 | -113 | 451 | 1,135 | -422 | -544 | 82 |
Accrued liabilities and other | ||||||||
-2,294 | 1,469 | 2,800 | 411 | 314 | -584 | 1,330 | 1,281 | -767 |
Net cash used in operating activities | ||||||||
-9,355 | -9,033 | -7,120 | -8,396 | -7,078 | -6,317 | -2,529 | -1,262 | -4,411 |
Cash flows from investing activities | ||||||||
Maturities of marketable securities | ||||||||
21,000 | 42,700 | 33,500 | 66,000 | 17,600 | 0 | 0 | 0 | 0 |
Purchases of marketable securities | ||||||||
16,777 | 36,319 | 25,029 | 59,775 | 22,741 | 96,883 | 0 | 0 | 0 |
Purchases of property and equipment | ||||||||
884 | 806 | 746 | 481 | 412 | 165 | 62 | 497 | 218 |
Net cash provided by (used in) investing activities | ||||||||
3,339 | 5,575 | 7,725 | 5,744 | -5,553 | -97,048 | -62 | -497 | -218 |
Cash flows from financing activities | ||||||||
Proceeds from follow-on public offering, net of underwriting discounts, commissions and offering costs | ||||||||
62,978 | - | - | - | 0 | - | - | - | - |
Proceeds from the exercise of stock options | ||||||||
174 | 312 | 611 | 442 | 125 | 699 | 707 | 188 | 20 |
Net cash provided by financing activities | ||||||||
63,152 | 1,252 | 573 | 1,538 | 125 | 114,523 | 419 | 188 | 20 |
Effect of exchange rate changes on cash and cash equivalents | ||||||||
-3 | 27 | -60 | 49 | -53 | -42 | -57 | 12 | -7 |
Net decrease in cash and cash equivalents | ||||||||
57,133 | -2,179 | 1,118 | -1,065 | -12,559 | 11,116 | -2,229 | -1,559 | -4,616 |
Cash and cash equivalents at | ||||||||
Supplemental disclosure of non-cash information | ||||||||
Vesting of early exercised stock options | ||||||||
27 | 36 | 39 | 56 | 66 | 75 | 36 | 10 | 18 |
Purchases of property and equipment included in accounts payable and accrued liabilities | ||||||||
52 | 344 | -26 | -83 | 140 | 47 | -62 | 97 | 0 |
Public offering costs included in accounts payable | ||||||||
0 | - | - | - | 167 | - | - | - | 0 |