| 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 | Dec'16 | Sep'16 | Jun'16 | Mar'16 | Dec'15 | Sep'15 | Jun'15 | Mar'15 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Operating expenses: | ||||||||||||||||||||
Research and development | ||||||||||||||||||||
5,676 | 5,324 | 5,935 | 8,409 | 11,135 | 14,312 | 17,559 | 20,506 | 22,383 | 22,686 | 22,445 | 17,892 | 12,844 | 8,740 | 5,365 | 4,798 | 4,961 | 3,991 | 0 | 0 | 0 |
Acquired in‑process research and development | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 0 |
General and administrative | ||||||||||||||||||||
4,647 | 2,701 | 4,484 | 5,598 | 7,057 | 8,493 | 8,512 | 8,198 | 10,302 | 10,438 | 11,340 | 10,756 | 7,129 | 5,956 | 4,614 | 4,145 | 3,752 | 3,177 | 0 | 0 | 0 |
Total operating expenses | ||||||||||||||||||||
22,474 | 20,176 | 10,419 | 14,007 | 18,192 | 22,805 | 26,071 | 28,704 | 32,685 | 33,124 | 33,785 | 28,648 | 19,973 | 14,696 | 9,979 | 8,943 | 8,713 | 8,076 | 0 | 0 | 0 |
Loss from operations | ||||||||||||||||||||
-22,474 | -20,176 | -10,419 | -14,007 | -18,192 | -22,805 | -26,071 | -28,704 | -32,685 | -33,124 | -33,785 | -28,648 | -19,973 | -14,696 | -9,979 | -8,943 | -8,713 | -8,076 | 0 | 0 | 0 |
Interest (expense) income, net | ||||||||||||||||||||
11 | -22 | -177 | -353 | -507 | -654 | -655 | -615 | -458 | -286 | -94 | -437 | -1 | 114 | 238 | 504 | 55 | -762 | 0 | 0 | 0 |
Loss on note extinguishment | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 0 | - | - | - |
Other income (expense), net | ||||||||||||||||||||
0 | - | -2,045 | -930 | - | 0 | 0 | - | - | -5 | -4 | -5 | -5 | -4 | -3 | 4 | 3 | 0 | 0 | 0 | - |
Loss before income taxes | ||||||||||||||||||||
-23,578 | -21,312 | -12,470 | -15,119 | -18,877 | -23,637 | -26,727 | -29,319 | -33,143 | -33,415 | -33,883 | -29,090 | -19,979 | -14,586 | -9,942 | -8,633 | -8,853 | -9,029 | 0 | 0 | 0 |
Provision for income taxes | ||||||||||||||||||||
0 | 0 | 0 | 0 | 0 | - | 0 | 0 | 0 | - | - | - | - | - | - | - | - | - | - | - | - |
Net loss | ||||||||||||||||||||
-23,578 | -21,312 | -12,470 | -15,119 | -18,877 | -23,637 | -26,727 | -29,319 | -33,143 | -33,415 | -33,883 | -29,090 | -19,979 | -14,586 | -9,942 | -8,633 | -8,853 | -9,029 | 0 | 0 | 0 |
Other comprehensive loss: | ||||||||||||||||||||
Foreign currency translation loss, net of tax | ||||||||||||||||||||
0 | - | - | - | 0 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
Total other comprehensive loss | ||||||||||||||||||||
-22 | 10 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | - | - | - | - | - | - | - | - | - | - | - | - |
Comprehensive loss | ||||||||||||||||||||
-23,600 | -21,302 | -12,472 | -15,121 | -18,879 | -23,637 | -26,727 | -29,319 | -33,143 | -33,415 | -33,883 | -29,090 | -19,979 | -14,586 | -9,942 | -8,633 | -8,853 | -9,029 | 0 | 0 | 0 |
Net loss | ||||||||||||||||||||
-23,578 | -21,312 | -12,470 | -15,119 | -18,877 | -23,637 | -26,727 | -29,319 | -33,143 | -33,415 | -33,883 | -29,090 | -19,979 | -14,586 | -9,942 | -8,633 | -8,853 | -9,029 | 0 | 0 | 0 |
Adjustment to redemption value on Series A convertible preferred stock | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | 0 | 0 | 67 | 217 | 366 | 516 | 601 | 600 | 2,968 | 0 | 0 | 0 |
Premium upon substantial modification of convertible note with certain shareholders | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 0 | - | - | - |
Net loss attributable to common stockholders | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | -14,952 | -11,505 | -10,281 | -10,500 | -13,044 | 0 | 0 | 0 |
Loss per share: | ||||||||||||||||||||
Net loss per share, basic and diluted (Note 11) | ||||||||||||||||||||
-0.30 | -3.16 | -0.24 | -0.20 | -0.48 | -0.26 | -0.43 | -0.47 | -0.58 | - | - | - | - | 0.78 | 0.56 | 0.42 | 0.65 | -1.14 | -0.87 | -0.60 | -2.27 |
Weighted average common shares outstanding: | ||||||||||||||||||||
Basic and diluted | ||||||||||||||||||||
15,670 | -12,800 | 14,265 | 14,265 | 5,166 | -23,926 | 14,259 | 14,232 | 12,439 | - | - | - | - | - | - | - | - | - | - | - | - |