| 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 | ||||||||
-8,346 | -8,307 | -7,081 | -6,922 | -5,823 | -5,691 | 0 | 0 | 0 |
Adjustments to reconcile net loss to net cash used in operating activities: | ||||||||
Stock-based compensation expense | ||||||||
1,288 | 1,171 | 1,087 | 1,014 | 507 | 467 | 0 | 0 | 0 |
Amortization of held-to-maturity securities, net | ||||||||
273 | 198 | 219 | 275 | 424 | 676 | 0 | 0 | 0 |
Foreign currency exchange loss (gain), net | ||||||||
-33 | -27 | -43 | -42 | -21 | -20 | 0 | 0 | 0 |
Changes in operating assets and liabilities: | ||||||||
Interest receivable | ||||||||
-63 | 35 | -77 | -60 | -178 | -195 | 0 | 0 | 0 |
Accounts receivable | ||||||||
110 | 252 | 237 | 514 | 338 | 59 | 0 | 0 | 0 |
Income tax receivable | ||||||||
-500 | -506 | 510 | 500 | 1,001 | 1,007 | 0 | 0 | 0 |
Prepaid research and development | ||||||||
-170 | -253 | -460 | -618 | -635 | -913 | 0 | 0 | 0 |
Prepaid expenses and other current assets | ||||||||
121 | 105 | 142 | -57 | 67 | 17 | 0 | 0 | 0 |
Accounts payable | ||||||||
-276 | 657 | 198 | 745 | 503 | -195 | 0 | 0 | 0 |
Accrued expenses | ||||||||
-62 | 166 | 229 | 203 | -52 | 251 | 0 | 0 | 0 |
Deferred research and development obligation | ||||||||
219 | -62 | 41 | 48 | -143 | 141 | 0 | 0 | 0 |
Income taxes payable | ||||||||
- | - | - | - | - | -100 | 0 | 0 | 0 |
Net cash used in operating activities | ||||||||
-6,369 | -5,782 | -5,610 | -4,871 | -5,155 | -4,407 | 0 | 0 | 0 |
Cash flows from investing activities | ||||||||
Purchases of held-to-maturity investment securities | ||||||||
46,077 | 47,615 | 48,000 | 42,985 | 45,163 | 49,734 | 0 | 0 | 0 |
Proceeds from maturities of investment securities | ||||||||
52,476 | 55,323 | 56,277 | 51,232 | 51,621 | 53,063 | 0 | 0 | 0 |
Net cash provided by investing activities | ||||||||
6,398 | 7,707 | 8,276 | 8,246 | 6,457 | 3,328 | 0 | 0 | 0 |
Cash flows from financing activities | ||||||||
Repurchases of common stock | ||||||||
- | - | - | - | - | 2,304 | 0 | 0 | 0 |
Proceeds from exercise of options | ||||||||
725 | 550 | 0 | 0 | 0 | - | - | - | - |
Net cash provided by financing activities | ||||||||
725 | 550 | 328 | -1,775 | -1,924 | -2,299 | 0 | 0 | 0 |
Effect of exchange rate changes on cash | ||||||||
-33 | -37 | -47 | -37 | -32 | -21 | 0 | 0 | 0 |
Net (decrease) increase in cash and cash equivalents | ||||||||
721 | 2,437 | 2,947 | 1,562 | -655 | -3,400 | 0 | 0 | 0 |
Supplemental cash flow information | ||||||||
Cash received from income tax refund | ||||||||
493 | 500 | 500 | 404 | -95 | 0 | 0 | 0 | 0 |