| 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 expenses: | ||||||||||||
Research and development | ||||||||||||
64,867 | 63,128 | 58,097 | 53,714 | 48,422 | 39,885 | 34,618 | 28,736 | 23,254 | 19,957 | 0 | 0 | 0 |
General and administrative | ||||||||||||
23,947 | 23,229 | 21,583 | 20,927 | 20,060 | 18,218 | 15,559 | 13,022 | 9,494 | 7,574 | 0 | 0 | 0 |
Total operating expenses | ||||||||||||
88,814 | 86,357 | 79,680 | 74,641 | 68,482 | 58,103 | 50,177 | 41,758 | 32,748 | 27,531 | 0 | 0 | 0 |
Loss from operations | ||||||||||||
-88,814 | -86,357 | -79,680 | -74,641 | -68,482 | -58,103 | -50,177 | -41,758 | -32,748 | -27,531 | 0 | 0 | 0 |
Other (expense) income: | ||||||||||||
Interest (expense) income, net | ||||||||||||
363 | 1,049 | 1,582 | 2,101 | 2,022 | 1,563 | 1,014 | 345 | -97 | -215 | 0 | 0 | 0 |
Other income | ||||||||||||
0 | - | - | - | 0 | - | - | - | - | - | - | - | - |
Other expenses | ||||||||||||
- | - | 218 | 0 | - | - | 483 | 549 | 332 | - | 0 | 0 | 0 |
Other income, net | ||||||||||||
855 | 1,075 | 1,364 | 2,101 | 1,737 | 1,157 | 531 | -204 | -429 | -516 | 0 | 0 | 0 |
Loss before income taxes | ||||||||||||
0 | - | - | - | 0 | - | - | - | - | - | - | - | - |
Income tax expense | ||||||||||||
0 | - | - | - | 0 | - | - | - | - | - | - | - | - |
Net loss | ||||||||||||
-88,214 | -85,472 | -78,316 | -72,540 | -66,745 | -56,946 | -49,646 | -41,962 | -33,177 | -28,047 | 0 | 0 | 0 |
Convertible preferred stock dividends | ||||||||||||
- | - | 0 | 0 | - | 3,937 | 5,667 | 7,375 | 7,277 | 6,085 | 0 | 0 | 0 |
Net loss attributable to common stockholders | ||||||||||||
- | - | -78,316 | -72,540 | - | -60,883 | -55,313 | -49,337 | -40,454 | -34,132 | 0 | 0 | 0 |
Net loss per share attributable to common stockholders, basic and diluted (in dollars per share) | ||||||||||||
-0.71 | -0.71 | -0.67 | -0.65 | -0.64 | -0.49 | -0.50 | -0.85 | -3.29 | -2.57 | -2.61 | -2.09 | -1.81 |
Weighted-average number of common shares outstanding, basic and diluted (in shares) | ||||||||||||
32,250 | 32,100 | 32,060 | 32,041 | 31,925 | 32,193 | 31,741 | 19,626 | 3,922 | 3,840 | 3,779 | 3,730 | 3,651 |
Comprehensive loss: | ||||||||||||
Reconciliation of net loss to net loss attributable to common stockholders: | ||||||||||||
Net loss | ||||||||||||
-88,214 | -85,472 | -78,316 | -72,540 | -66,745 | -56,946 | -49,646 | -41,962 | 0 | 0 | 0 | - | - |
Net Income (Loss) Attributable to Parent | ||||||||||||
0 | - | - | - | 0 | - | - | - | - | - | - | - | - |
Other comprehensive loss: | ||||||||||||
Unrealized gain (loss) on investments, net of tax of $0 | ||||||||||||
2 | 18 | 38 | 1 | -2 | -18 | -38 | 0 | 0 | - | 0 | - | - |
Comprehensive loss | ||||||||||||
-88,154 | -85,454 | -78,290 | -72,556 | -66,764 | -56,964 | -49,719 | 0 | 0 | - | 0 | - | - |