| In millions, except per share items | Dec-31-22 | Dec-31-21 | Dec-31-20 | Dec-31-19 | Dec-31-18 | Dec-31-17 | Dec-31-16 | Dec-31-15 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | S-1/A |
| Revenues | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.4 | 0.5 | |
| Revenue growth | | | | -100.0% | -98.2% | -31.8% | | |
| Cost of goods sold | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 0.2 | |
| Gross profit | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 0.3 | |
| Gross margin | | | | | 100.0% | 50.9% | 54.3% | |
| Selling, general and administrative [+] | 6.6 | 6.0 | 5.6 | 4.3 | 4.0 | 2.9 | 1.6 | |
| Sales and marketing | 1.4 | 1.1 | 0.6 | 0.4 | 0.3 | 0.1 | 0.0 | |
| General and administrative | 5.2 | 4.9 | 5.0 | 3.9 | 3.8 | 2.8 | 1.5 | |
| Research and development | 6.6 | 5.5 | 5.9 | 6.6 | 4.7 | 1.9 | 0.5 | |
| EBITDA [+] | -13.1 | -11.4 | -11.4 | -10.8 | -8.7 | -4.6 | -1.7 | |
| EBITDA growth | 14.7% | -0.2% | 5.9% | 24.2% | 89.8% | 164.3% | | |
| EBITDA margin | | | | | -140316.7% | -1298.1% | -334.9% | |
| Depreciation and amortization | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | |
| EBIT [+] | -13.2 | -11.5 | -11.5 | -10.8 | -8.7 | -4.6 | -1.8 | |
| EBIT growth | 14.4% | 0.0% | 6.1% | 24.2% | 88.7% | 158.2% | | |
| EBIT margin | | | | | -141423.2% | -1315.6% | -347.5% | |
| Non-recurring items [+] | | | | | 0.3 | | | |
| Asset impairment | | | | | 0.3 | | | |
| Interest expense | | | | | | 0.0 | 0.0 | |
| Other income (expense), net [+] | 0.0 | 0.3 | -0.2 | -2.5 | -0.8 | -0.7 | -1.0 | |
| Amortization of debt discount premium | | | -0.2 | -2.4 | -0.7 | | | |
| Gain (loss) on debt retirement | | -0.3 | | | | | | |
| Other | 0.0 | 0.0 | -0.2 | -2.5 | -0.8 | -0.8 | -1.0 | |
| Pre-tax income | -13.2 | -11.2 | -11.7 | -13.3 | -9.8 | -5.4 | -2.8 | |
| Income taxes | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
| Tax rate | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | |
| Net income | -13.2 | -11.4 | -12.1 | -17.5 | -9.8 | -5.4 | -2.8 | |
| Net margin | | | | | -158669.6% | -1529.2% | -538.3% | |
| |
| Basic EPS [+] | ($4.56) | ($5.55) | ($0.63) | ($2.34) | ($2.17) | ($1.95) | ($3.84) | |
| Growth | -17.8% | 781.0% | -73.0% | 7.5% | 11.5% | -49.2% | | |
| Diluted EPS [+] | ($4.56) | ($5.55) | ($0.63) | ($2.34) | ($2.17) | ($1.95) | ($3.84) | |
| Growth | -17.8% | 781.0% | -73.0% | 7.5% | 11.5% | -49.2% | | |
| |
| Shares outstanding (basic) [+] | 2.9 | 2.0 | 19.2 | 7.5 | 4.5 | 2.8 | 0.7 | |
| Growth | 41.3% | -89.4% | 156.5% | 66.5% | 63.4% | 281.2% | | |
| Shares outstanding (diluted) [+] | 2.9 | 2.0 | 19.2 | 7.5 | 4.5 | 2.8 | 0.7 | |
| Growth | 41.3% | -89.4% | 156.5% | 66.5% | 63.4% | 281.2% | | |
| |
| EBIT is a non-GAAP figure that excludes all non-recurring expenses: restructuring costs, asset impairments, IPR&D writeoffs, and other unusual charges. |