In millions, except per share items | Jun-30-23 | Sep-30-22 | Jun-30-22 | Dec-31-21 | Sep-30-21 | Jun-30-21 | Mar-31-21 | Dec-31-20 |
| 10-Q | 10-Q | 10-Q | 10-Q | 10-Q | 10-Q | 10-K | 10-Q |
Cash flows from operating activities | | | | | | | | |
Net loss | | | | -28.6 | -26.4 | -22.9 | -22.9 | -17.6 |
|
Adjustments to reconcile net loss to net cash used in operating activities | | | | | | | | |
Depreciation and amortization | | | | | 0.1 | | | |
Amortization of licensed right to use technology | | | | | 0.0 | | | |
Stock-based compensation | | | | 5.3 | 4.3 | 4.3 | 4.9 | 4.1 |
Amortization of debt discount | | | | 0.5 | 0.1 | | | 0.1 |
|
Changes in: | | | | | | | | |
Accounts receivable | | | | -0.2 | | 0.0 | -0.4 | |
Other current assets and prepaid expenses | | | | -1.5 | -1.2 | -0.3 | -0.5 | 0.7 |
Accounts payable | | | | 0.3 | 0.4 | 0.3 | -1.0 | -1.0 |
Accrued expenses | | | | | 2.6 | -0.1 | | |
Net cash used in operating activities | | | | -20.8 | -19.7 | -18.1 | -19.6 | -14.1 |
|
Cash flows from investing activities | | | | | | | | |
Purchase of property and equipment | | | | -1.1 | -0.8 | -0.7 | -0.9 | -0.9 |
Net cash used in investing activities | | | | -1.1 | -0.9 | -0.7 | -0.9 | -0.9 |
|
Cash flows from financing activities | | | | | | | | |
Proceeds from issuance of common stock through at the market offerings | | | | 67.9 | 28.7 | 15.5 | 11.9 | 5.6 |
Proceeds from issuance of common stock through exercise of stock options | | | | 0.2 | 0.1 | | | 0.0 |
Payment of loan | | | | -0.7 | -0.6 | -0.5 | -0.4 | -0.3 |
Net cash provided by and (used in) financing activities | | | | 92.0 | 47.0 | 33.9 | 30.3 | 12.1 |
|
Supplemental disclosure of non-cash investing and financing activities | | | | | | | | |
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Derivative liability | | | | | | | | |
Right-of-use assets | | | | | | | | |
Operating lease liability | | | | | | | | |
Supplemental disclosure of cash flow items: | | | | | | | | |
Interest paid | | | | 0.5 | 0.6 | 0.6 | 0.5 | 0.3 |
Income taxes paid | | | | | | | | |