| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Revenue | ||||||||||||||||||||
- | 0 | 0 | 0 | 5,000 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
Revenue | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | 4,060 | 1,715 | 1,451 | 1,158 | 1,234 | 1,201 | 1,070 | 807 |
Operating expenses: | ||||||||||||||||||||
Research and development | ||||||||||||||||||||
6,518 | 9,101 | 10,145 | 16,925 | 16,148 | 13,717 | 15,591 | 12,604 | 8,400 | 12,282 | 12,894 | 15,370 | 13,108 | 10,461 | 9,218 | 7,404 | 6,876 | 5,787 | 6,258 | 5,976 | 4,503 |
General and administrative | ||||||||||||||||||||
3,587 | 3,056 | 3,154 | 3,682 | 3,943 | 3,780 | 4,150 | 3,957 | 3,823 | 2,847 | 2,741 | 2,902 | 3,170 | 3,198 | 3,266 | 3,115 | 2,301 | 1,769 | 1,523 | 1,709 | 1,321 |
Total operating expenses | ||||||||||||||||||||
10,105 | 12,157 | 13,299 | 20,607 | 20,091 | 17,497 | 19,741 | 16,561 | 12,223 | 15,129 | 15,635 | 18,272 | 16,278 | 13,659 | 12,484 | 10,519 | 9,177 | 7,556 | 7,781 | 7,685 | 5,824 |
Loss from operations | ||||||||||||||||||||
-10,105 | -12,157 | -13,299 | -20,607 | -15,091 | -17,497 | -18,686 | -15,718 | -11,281 | -13,507 | -14,084 | -17,125 | -15,257 | -9,599 | -10,769 | -9,068 | -8,019 | -6,322 | -6,580 | -6,615 | -5,017 |
Interest income | ||||||||||||||||||||
207 | 215 | 224 | 297 | 357 | 342 | 171 | 194 | 165 | 126 | 155 | 169 | 191 | 190 | 36 | 20 | - | - | - | - | - |
Interest expense | ||||||||||||||||||||
3 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 0 | 189 | 209 | 201 |
Other income, net | ||||||||||||||||||||
23 | 86 | 242 | 292 | 316 | 255 | 87 | 46 | 90 | -43 | -25 | -2 | -30 | -8 | -38 | -5 | 28 | 691 | -281 | 205 | -522 |
Net loss | ||||||||||||||||||||
-9,878 | -11,856 | -12,833 | -20,018 | -14,418 | -16,900 | -18,428 | -15,478 | -11,026 | -13,424 | -13,954 | -16,958 | -15,096 | -9,417 | -10,771 | -9,053 | -7,991 | -5,631 | -7,050 | -6,619 | -5,740 |
Accruing dividends on preferred stock | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | 0 | 0 | 0 | 1,378 | 3,026 | 2,459 | 2,152 | 2,087 |
Net loss attributable to common stockholders | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | -9,417 | -10,771 | -9,053 | -9,369 | -7,940 | -9,336 | 68 | -7,827 |
Net loss per share—basic and diluted | ||||||||||||||||||||
-0.19 | -0.23 | -0.25 | -0.39 | -0.28 | -0.36 | -0.50 | -0.43 | -0.32 | -0.51 | -0.56 | -0.68 | -0.60 | -0.38 | -0.54 | -0.47 | -0.87 | - | - | - | - |
Weighted average common shares outstanding—basic and diluted | ||||||||||||||||||||
52,146 | 51,351 | 51,099 | 51,097 | 50,976 | 46,687 | 36,694 | 36,009 | 34,474 | 26,465 | 25,093 | 25,040 | 25,020 | 24,975 | 20,073 | 19,139 | 10,766 | - | - | - | - |
Other comprehensive income: | ||||||||||||||||||||
Unrealized gain on investments | ||||||||||||||||||||
36 | -9 | -17 | 15 | 17 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
Comprehensive loss | ||||||||||||||||||||
-9,842 | -11,865 | -12,850 | -20,003 | -14,401 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |