| 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 | 10-K |
| Revenues [+] | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.6 |
| Products | | | | | | | | 0.4 |
| Grants | | | | | | | | 0.2 |
| Revenue growth | | | | | | | -100.0% | |
| Cost of goods sold | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.4 |
| Gross profit | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.3 |
| Gross margin | | | | | | | | 41.9% |
| Selling, general and administrative [+] | 24.4 | 31.5 | 8.8 | 6.9 | 6.6 | 6.6 | 6.1 | 7.9 |
| Sales and marketing | | | | | | 0.0 | | 1.7 |
| General and administrative | | | 8.8 | 6.9 | 6.6 | 6.6 | 6.1 | 6.1 |
| Research and development | | | 23.2 | 16.3 | 7.2 | 3.1 | 2.2 | 4.5 |
| Other operating expenses | -0.6 | -0.7 | | | -2.0 | | 0.0 | 0.2 |
| EBITDA [+] | -21.8 | -28.8 | -30.0 | -21.2 | -9.8 | -8.1 | -8.3 | -12.2 |
| EBITDA growth | -24.4% | -3.9% | 41.2% | 117.2% | 21.2% | -2.7% | -32.2% | 138.1% |
| EBITDA margin | | | | | | | | -2014.1% |
| Depreciation and amortization | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 1.6 | 0.0 | 0.1 |
| EBIT [+] | -23.8 | -30.8 | -31.9 | -23.2 | -11.7 | -9.7 | -8.3 | -12.3 |
| EBIT growth | -22.8% | -3.6% | 37.7% | 97.6% | 21.3% | 16.5% | -32.7% | 138.9% |
| EBIT margin | | | | | | | | -2031.9% |
| Non-recurring items [+] | | | 4.3 | 0.3 | 2.6 | 2.5 | 0.0 | -0.2 |
| Unusual expense | | | 4.3 | 0.3 | 2.6 | 2.5 | 0.0 | -0.2 |
| Other income (expense), net [+] | -0.3 | -0.1 | 11.7 | -7.3 | 2.5 | -1.3 | 1.6 | -3.7 |
| Gain (loss) on debt retirement | | | | | | 0.0 | -0.1 | |
| Change in fair value of warrants | 0.0 | -0.5 | 11.6 | -7.0 | 0.5 | -0.7 | 1.7 | -0.5 |
| Other | | | 0.0 | 0.2 | 0.1 | -0.6 | 1.6 | -3.7 |
| Pre-tax income | -24.1 | -30.9 | -24.6 | -30.8 | -11.8 | -13.4 | -6.7 | -15.9 |
| Income taxes | 0.0 | 0.0 | 0.0 | 0.0 | 1.5 | -1.7 | 0.0 | 0.0 |
| Tax rate | 0.0% | 0.0% | 0.0% | 0.0% | | 12.3% | 0.0% | 0.0% |
| Net income | -24.1 | -30.9 | -24.6 | -30.8 | -13.3 | -15.4 | -15.7 | -15.9 |
| Net margin | | | | | | | | -2618.8% |
| |
| Basic EPS [+] | ($2.87) | ($5.81) | ($0.39) | ($0.90) | ($0.56) | ($1.31) | ($5.07) | ($1.69) |
| Growth | -50.7% | 1377.2% | -56.3% | 59.7% | -57.0% | -74.1% | 200.2% | -83.8% |
| Diluted EPS [+] | ($2.87) | ($5.81) | ($0.39) | ($0.90) | ($0.56) | ($1.31) | ($5.07) | ($1.69) |
| Growth | -50.7% | 1377.2% | -56.3% | 59.7% | -57.0% | -74.1% | 200.2% | -83.8% |
| |
| Shares outstanding (basic) [+] | 8.4 | 5.3 | 62.6 | 34.1 | 21.0 | 9.0 | 3.1 | 9.4 |
| Growth | 57.9% | -91.5% | 83.4% | 62.8% | 133.6% | 189.5% | -67.1% | 642.2% |
| Shares outstanding (diluted) [+] | 8.4 | 5.3 | 62.6 | 34.1 | 21.0 | 9.0 | 3.1 | 9.4 |
| Growth | 57.9% | -91.5% | 83.4% | 62.8% | 133.6% | 189.5% | -67.1% | 642.2% |
| |
| EBIT is a non-GAAP figure that excludes all non-recurring expenses: restructuring costs, asset impairments, IPR&D writeoffs, and other unusual charges. |