| Mar'20 | Dec'19 | Sep'19 | Jun'19 | Mar'19 | Dec'18 | Sep'18 | Jun'18 | Mar'18 | Dec'17 |
|---|---|---|---|---|---|---|---|---|---|
Assets | |||||||||
Current assets: | |||||||||
Cash and cash equivalents | |||||||||
29,604 | 37,424 | 45,882 | 55,863 | 59,114 | 55,671 | 49,296 | 46,732 | 25,704 | 28,270 |
Marketable securities | |||||||||
- | - | 0 | 0 | 7,989 | 22,923 | 37,824 | 47,715 | - | 12,691 |
Marketable securities | |||||||||
- | - | - | - | - | - | - | - | 6,696 | - |
Accounts receivable | |||||||||
- | 2,000 | 880 | 1,492 | 2,040 | 1,668 | 1,419 | 1,202 | 1,601 | 830 |
Prepaid expenses and other current assets | |||||||||
1,581 | 1,167 | 1,216 | 1,243 | 757 | 740 | 960 | 1,412 | 1,176 | 513 |
Restricted cash | |||||||||
- | - | - | - | - | - | - | 50 | 50 | 75 |
Total current assets | |||||||||
31,185 | 40,591 | 47,978 | 58,598 | 69,900 | 81,002 | 89,499 | 97,111 | 35,227 | 42,379 |
Operating lease, right-of-use asset | |||||||||
4,929 | 5,285 | 5,634 | 5,977 | 6,316 | - | - | - | - | - |
Property and equipment, net | |||||||||
1,570 | 1,865 | 2,170 | 2,632 | 2,963 | 3,251 | 3,613 | 3,938 | 3,902 | 4,108 |
Restricted cash | |||||||||
1,255 | 1,255 | 1,255 | 1,255 | 1,255 | 1,255 | 1,255 | 1,255 | 1,255 | 1,255 |
Deferred offering costs | |||||||||
- | - | - | - | - | - | - | - | 2,612 | 1,373 |
Other assets | |||||||||
- | 427 | 847 | 846 | 846 | 419 | 419 | 419 | 419 | - |
Total assets | |||||||||
38,939 | 49,423 | 57,884 | 69,308 | 81,280 | 85,927 | 94,786 | 102,723 | 43,415 | 49,115 |
Liabilities and Stockholders' Equity | |||||||||
Current liabilities: | |||||||||
Accounts payable | |||||||||
628 | 3,183 | 1,594 | 1,660 | 1,836 | 1,519 | 803 | 1,664 | 3,083 | 1,346 |
Accrued expenses and other current liabilities | |||||||||
6,123 | 7,131 | 6,538 | 5,929 | 6,067 | 5,477 | - | - | - | 2,953 |
Operating lease liability | |||||||||
1,658 | 1,619 | 1,581 | 1,543 | 1,507 | - | - | - | - | - |
Deferred revenue | |||||||||
841 | 1,315 | 14,717 | 15,175 | 16,935 | 17,949 | - | - | - | 6,891 |
Accrued expenses and other current liabilities | |||||||||
- | - | - | - | - | - | 5,495 | 2,787 | 2,358 | - |
Deferred revenue | |||||||||
- | - | - | - | - | - | 20,086 | 20,363 | 17,519 | - |
Total current liabilities | |||||||||
9,250 | 13,248 | 24,430 | 24,307 | 26,345 | 24,945 | 26,384 | 24,814 | 22,960 | 11,190 |
Deferred rent | |||||||||
- | - | - | - | - | 748 | 871 | 888 | 902 | 906 |
Operating lease liability, net of current portion | |||||||||
3,987 | 4,413 | 4,831 | 5,243 | 5,645 | - | - | - | - | - |
Deferred revenue, net of current portion | |||||||||
- | - | - | - | - | - | - | - | - | 8,714 |
Deferred revenue, net of current portion | |||||||||
- | - | - | - | - | - | - | 346 | 3,655 | - |
Total liabilities | |||||||||
13,237 | 17,661 | 29,261 | 29,550 | 31,990 | 25,693 | 27,255 | 26,048 | 27,517 | 20,810 |
Commitments and contingencies (Note 8) | |||||||||
- | - | - | - | - | - | 0 | 0 | 0 | - |
Redeemable convertible preferred stock (Series A and B), $0.001 par value; no shares and 20,791,407 shares authorized at December 31, 2018 and 2017, respectively; no shares and 20,771,850 shares issued and outstanding at December 31, 2018 and 2017, respectively | |||||||||
- | - | - | - | - | - | - | - | 77,167 | 77,151 |
Stockholders’ equity: | |||||||||
Preferred stock, $0.001 par value; 10,000,000 shares authorized; no shares issued or outstanding | |||||||||
- | - | - | - | - | - | 0 | 0 | - | - |
Common stock, $0.001 par value; 150,000,000 shares authorized; 30,821,892 shares and 30,663,054 shares issued and outstanding at March 31, 2020 and December 31, 2019, respectively | |||||||||
31 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 10 | 10 |
Additional paid-in capital | |||||||||
155,657 | 155,624 | 154,782 | 153,994 | 153,012 | 152,275 | 150,978 | 149,943 | 2,990 | 2,499 |
Accumulated other comprehensive loss | |||||||||
- | - | - | - | -2 | -12 | -24 | -13 | -7 | -16 |
Accumulated deficit | |||||||||
-129,986 | -123,892 | -126,189 | -114,266 | -103,750 | -92,059 | -83,453 | -73,285 | -64,262 | -51,339 |
Total stockholders’ equity | |||||||||
25,702 | 31,762 | 28,623 | 39,758 | 49,290 | 60,234 | 67,531 | 76,675 | -61,269 | -48,846 |
Total liabilities and stockholders' equity | |||||||||
38,939 | 49,423 | 57,884 | 69,308 | 81,280 | 85,927 | 94,786 | 102,723 | 43,415 | 49,115 |