In millions, except per share items | Jun-30-23 | Mar-31-23 | Dec-31-22 | Sep-30-22 | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 |
| 10-Q | 10-Q | | 10-Q | 10-Q | 10-Q | 10-K | 10-Q |
ASSETS | | | | | | | | |
Current assets: | | | | | | | | |
Cash and cash equivalents | | | | | | | | |
Marketable securities | 71.5 | 135.2 | | 57.1 | | 0.3 | 0.5 | |
Other receivables | 0.2 | 0.4 | | 4.0 | 0.6 | 0.3 | 0.1 | 0.1 |
Prepaid expenses | 5.0 | 4.5 | | 3.5 | | | | |
Total current assets | 183.5 | 208.6 | | 234.1 | 250.3 | 178.8 | 176.0 | 187.1 |
Property and equipment, net | 1.5 | 1.2 | | 1.0 | 1.0 | 0.9 | 0.8 | 0.5 |
Operating lease right-of-use assets | 2.1 | 0.5 | | 0.7 | 0.8 | 0.9 | 1.1 | |
Long-term investments | 0.3 | 0.3 | | 0.2 | 0.2 | | | |
Other assets | 1.5 | 0.5 | | 0.6 | 0.6 | 0.9 | 1.1 | 1.6 |
Total assets | 188.9 | 211.2 | | 236.5 | 252.8 | 181.5 | 178.9 | 190.4 |
|
LIABILITIES AND STOCKHOLDERS' EQUITY | | | | | | | | |
Current liabilities: | | | | | | | | |
Accounts payable and other accrued liabilities | 9.5 | 9.0 | | 10.2 | 8.9 | 10.8 | 8.7 | 8.1 |
Accrued payroll and benefits | 5.3 | 4.2 | | 4.1 | 2.8 | 1.8 | 2.8 | 2.2 |
Total current liabilities | 14.8 | 13.3 | | 14.3 | 11.7 | 12.6 | 11.5 | 10.4 |
Term loan, net | 24.6 | 24.5 | | 19.4 | 19.3 | 19.2 | | |
Other long-term liabilities | 1.8 | 0.0 | | 0.2 | 0.3 | 0.5 | 0.7 | 0.9 |
Total liabilities | 41.2 | 37.8 | | 33.8 | 31.3 | 32.3 | 12.2 | 11.3 |
|
Commitments and contingencies (Note 8) | | | | | | | | |
Stockholders’ equity: | | | | | | | | |
Common stock | 0.0 | 0.0 | | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
Additional paid-in capital | 311.4 | 305.7 | | 297.8 | 294.2 | 216.1 | 213.4 | 211.0 |
Accumulated other comprehensive loss | 0.0 | -0.1 | | 0.0 | | | | |
Accumulated deficit | -163.6 | -132.2 | | -95.2 | -72.7 | -66.9 | -46.7 | -31.8 |
Total stockholders’ equity | 147.7 | 173.4 | | 202.6 | 221.5 | 149.2 | 166.7 | 179.1 |
Total liabilities and stockholders’ equity | 188.9 | 211.2 | | 236.5 | 252.8 | 181.5 | 178.9 | 190.4 |