| Mar'20 | Dec'19 | Sep'19 | Jun'19 | Mar'19 | Dec'18 | Sep'18 | Jun'18 | Dec'17 |
|---|---|---|---|---|---|---|---|---|
Assets | ||||||||
Current assets: | ||||||||
Cash and cash equivalents | ||||||||
121,020 | 98,849 | 114,214 | 124,891 | 136,580 | 150,637 | 165,578 | 179,090 | 92,136 |
Restricted cash | ||||||||
179 | 179 | 179 | 252 | 252 | 252 | 252 | - | - |
Accounts receivable | ||||||||
818 | 444 | 461 | 450 | 415 | 578 | 593 | 1,027 | 937 |
Prepaid expenses and other current assets | ||||||||
4,114 | 5,637 | 3,980 | 2,878 | 1,518 | 1,784 | 1,169 | 371 | 1,960 |
Total current assets | ||||||||
126,131 | 105,109 | 118,834 | 128,471 | 138,765 | 153,251 | 167,592 | 180,488 | 95,033 |
Restricted cash | ||||||||
- | - | - | - | - | - | - | 473 | - |
Other assets | ||||||||
166 | 166 | 166 | 239 | 673 | 673 | 674 | 435 | 473 |
Property and equipment, net | ||||||||
1,101 | 1,204 | 1,330 | 1,461 | 1,555 | 1,690 | 1,813 | 1,883 | 1,816 |
Total assets | ||||||||
127,398 | 106,479 | 120,330 | 130,171 | 140,993 | 155,614 | 170,079 | 183,279 | 97,322 |
Liabilities and stockholders’ equity | ||||||||
Current liabilities: | ||||||||
Accounts payable | ||||||||
1,850 | 1,555 | 1,750 | 834 | 1,337 | 1,889 | 1,208 | 1,597 | 1,537 |
Accrued expenses and other current liabilities | ||||||||
2,796 | 3,341 | 5,344 | 3,944 | 4,586 | 3,996 | 6,465 | 5,897 | 2,835 |
Total current liabilities | ||||||||
4,646 | 4,896 | 7,094 | 4,778 | 5,923 | 5,885 | 7,673 | 7,494 | 4,372 |
Other long-term liabilities | ||||||||
234 | 272 | 309 | 347 | 384 | 418 | 435 | 244 | 282 |
Total liabilities | ||||||||
4,880 | 5,168 | 7,403 | 5,125 | 6,307 | 6,303 | 8,108 | 7,738 | 4,654 |
Commitments and contingencies (see Note 10) | ||||||||
- | - | - | - | - | - | 0 | 0 | - |
Stockholders' equity: | ||||||||
Preferred stock, $0.01 par value, 10,000 shares authorized and no shares issued and outstanding as of March 31, 2020 and December 31, 2019 | ||||||||
- | - | - | - | - | - | 0 | 0 | - |
Common stock, $0.01 par value, 150,000 shares authorized as of March 31, 2020 and December 31, 2019, 45,546 and 33,739 issued and outstanding as of March 31, 2020 and December 31, 2019 | ||||||||
455 | 337 | 337 | 336 | 334 | 333 | 332 | 332 | 53 |
Additional paid-in capital | ||||||||
299,721 | 263,922 | 261,760 | 259,090 | 256,601 | 254,516 | 253,084 | 252,473 | 12,486 |
Accumulated deficit | ||||||||
-177,658 | -162,948 | -149,170 | -134,380 | -122,249 | -105,538 | -91,445 | -77,264 | -52,257 |
Total stockholders’ equity | ||||||||
122,518 | 101,311 | 112,927 | 125,046 | 134,686 | 149,311 | 161,971 | 175,541 | -39,718 |
Total liabilities and stockholders’ equity | ||||||||
127,398 | 106,479 | 120,330 | 130,171 | 140,993 | 155,614 | 170,079 | 183,279 | 97,322 |
Series A-1 | ||||||||
Convertible preferred stock | ||||||||
- | - | - | - | - | - | - | - | 22,650 |
Series A-2 | ||||||||
Convertible preferred stock | ||||||||
- | - | - | - | - | - | - | - | 39,979 |
Series B | ||||||||
Convertible preferred stock | ||||||||
- | - | - | - | - | - | - | - | 69,757 |