| Dec'19 | Dec'18 | Dec'17 | Dec'16 | Dec'15 | Dec'14 | Dec'13 |
|---|---|---|---|---|---|---|
Operating expenses: | ||||||
Research and development | ||||||
53,249 | 41,078 | 30,157 | 33,895 | 26,356 | 19,078 | 2,843 |
General and administrative | ||||||
13,743 | 14,339 | 12,462 | 14,180 | 9,472 | 3,500 | 1,162 |
Total operating expenses | ||||||
66,992 | 55,417 | 42,619 | 48,075 | 35,828 | 22,578 | 4,005 |
Loss from operations | ||||||
-66,992 | -55,417 | -42,619 | -48,075 | -35,828 | -22,578 | -4,005 |
Other income (expense), net: | ||||||
Changes in fair value of warrant liabilities | ||||||
20,926 | - | - | - | 17,443 | 1,380 | 202 |
Interest expense | ||||||
- | - | - | - | - | - | 2,719 |
Other income, net | ||||||
-517 | 1,780 | 760 | 351 | 66 | 87 | 94 |
Total other income (expense), net | ||||||
-21,443 | 1,780 | 760 | - | -17,377 | -1,293 | -2,827 |
Loss before provision for (benefit from) income taxes, net | ||||||
-88,435 | -53,637 | -41,859 | -47,724 | -53,205 | -23,871 | -6,832 |
Provision for (benefit from) income taxes, net | ||||||
-160 | -302 | 156 | 143 | 55 | 2 | - |
Net loss and comprehensive loss | ||||||
-88,275 | -53,335 | -42,015 | -47,867 | -53,260 | -23,873 | -6,832 |
Adjustment to redemption value on redeemable convertible preferred stock | ||||||
- | - | - | - | 374,015 | 49,849 | 5,713 |
Net loss attributable to common stockholders | ||||||
- | - | - | - | -453,184 | -73,722 | -12,545 |
Net loss per common share, basic and diluted | ||||||
-30.30 | -30.16 | -33.68 | -1.58 | -31.47 | -69.08 | -19.18 |
Weighted-average shares used in computing net loss per common share, basic and diluted | ||||||
2,913 | 1,768 | 1,247 | 30,240 | 14,399 | 1,067 | 653 |