| Dec'19 | Dec'18 | Dec'17 | ||||
|---|---|---|---|---|---|---|
Revenue | ||||||
0 | 0 | - | ||||
Operating expenses: | ||||||
Research and development | ||||||
5,108 | 4,669 | 3,965 | ||||
Sales and marketing | ||||||
189 | 304 | 91 | ||||
Depreciation and amortization | ||||||
216 | 120 | 130 | ||||
General and administrative | ||||||
7,428 | 3,107 | 3,001 | ||||
Total operating expenses | ||||||
12,943 | 8,202 | 7,188 | ||||
Loss from operations | ||||||
-12,943 | -8,202 | -7,188 | ||||
Other (expense) income: | ||||||
Interest expense | ||||||
822 | 1,115 | 295 | ||||
Other income | ||||||
14 | 3 | 3 | ||||
Total other income (expense) | ||||||
-808 | -1,112 | -292 | ||||
Loss before income taxes | ||||||
-13,751 | -9,314 | -7,480 | ||||
Income tax expense | ||||||
0 | 0 | 0 | ||||
Net loss | ||||||
-13,751 | -9,314 | -7,480 | ||||
Dividend to Series A and B preferred stockholders | ||||||
160 | 1,280 | 1,280 | ||||
Net loss attributable to common stockholders | ||||||
-13,912 | -10,594 | -8,760 | ||||
Net loss per common share, basic and diluted (in dollars per share) | ||||||
-1.00 | -5.64 | -5.15 | ||||
Weighted average number of common shares outstanding, basic and diluted (in shares) | ||||||
13,841 | 1,877 | 1,700 | ||||