| 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/A | 10-K/A | 10-K |
| Revenues: |
| License revenue | | | | | | 0.2 | 15.1 | 1.7 |
| Total revenues [+] | 0.6 | 1.5 | 4.8 | 2.6 | 6.6 | 0.2 | 15.1 | 1.7 |
| Licensing | | | | | | 0.2 | 15.1 | 1.7 |
| Revenue growth [+] | -63.5% | -68.5% | 85.7% | -60.6% | 2978.1% | -98.6% | 801.6% | -54.2% |
| License revenue | | | | | | -98.6% | 801.6% | -54.2% |
| Cost of goods sold | -10.9 | 0.2 | 0.5 | 0.0 | 0.5 | 0.0 | 0.0 | 0.0 |
| Gross profit | 11.4 | 1.3 | 4.4 | 2.6 | 6.1 | 0.2 | 15.1 | 1.7 |
| Gross margin | 2051.0% | 87.0% | 90.2% | 100.0% | 91.9% | 100.0% | 100.0% | 100.0% |
| Selling, general and administrative [+] | 6.0 | 5.0 | 5.8 | 5.4 | 6.9 | 5.1 | 4.6 | 3.8 |
| General and administrative | 6.0 | 5.0 | 5.8 | 5.4 | | | | 3.8 |
| Research and development | 4.8 | 5.7 | 5.9 | 5.1 | 7.5 | 9.6 | 6.1 | 4.7 |
| Other operating expenses | 10.8 | | | | | | | |
| EBITDA [+] | -10.0 | -9.1 | -7.1 | -7.6 | -7.9 | -14.1 | 4.7 | -6.4 |
| EBITDA growth | 9.1% | 29.4% | -7.5% | -3.2% | -44.0% | -398.4% | -173.7% | 105.0% |
| EBITDA margin | -1788.9% | -598.5% | -145.9% | -293.0% | -119.1% | -6551.2% | 31.3% | -383.1% |
| Depreciation and amortization | 0.2 | 0.2 | 0.3 | 0.2 | 0.4 | 0.4 | 0.4 | 0.4 |
| EBIT [+] | -10.2 | -9.4 | -7.4 | -7.9 | -8.3 | -14.5 | 4.3 | -6.8 |
| EBIT growth | 8.6% | 27.2% | -6.7% | -4.7% | -43.0% | -433.9% | -164.3% | 94.5% |
| EBIT margin | -1824.1% | -613.0% | -151.9% | -302.3% | -124.9% | -6745.1% | 28.8% | -404.5% |
| Non-recurring items | 0.1 | | | | | | | |
| Interest expense, net [+] | -0.1 | 0.0 | 0.8 | 1.0 | 0.9 | 0.4 | 0.0 | |
| Interest expense | | | 0.8 | 1.0 | 0.9 | 0.4 | | |
| Interest income | 0.1 | 0.0 | | | | | 0.0 | |
| Other income (expense), net [+] | 0.0 | 0.6 | 0.7 | 1.4 | -0.2 | 0.6 | 0.8 | -4.5 |
| Gain (loss) on debt retirement | | 0.7 | -0.1 | 0.2 | | | | |
| Change in fair value of warrants | | | -0.9 | 1.1 | | 0.6 | 0.8 | -4.5 |
| Other non-ooperating expenses | 0.0 | -0.1 | | | | | | |
| Other | 0.0 | -0.1 | -0.3 | 0.0 | 0.1 | -0.1 | -0.1 | 0.0 |
| Pre-tax income | -10.2 | -8.8 | -7.4 | -7.5 | -9.3 | -14.3 | 5.1 | -11.3 |
| Income taxes | 0.0 | 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% | 0.0% |
| Net income | -10.2 | -8.8 | -7.4 | -7.5 | -9.3 | -14.3 | 5.1 | -11.3 |
| Net margin | -1832.3% | -575.1% | -153.1% | -287.5% | -140.6% | -6654.4% | 34.1% | -675.0% |
| |
| Basic EPS [+] | ($0.76) | ($0.90) | ($1.96) | ($9.78) | ($1.64) | ($4.05) | $1.49 | ($0.56) |
| Growth | -15.8% | -54.1% | -79.9% | 497.5% | -59.6% | -372.5% | -364.1% | 299.2% |
| Diluted EPS [+] | ($0.76) | ($0.90) | ($1.96) | ($9.78) | ($1.64) | ($4.04) | $1.44 | ($0.56) |
| Growth | -15.8% | -54.1% | -79.9% | 497.5% | -59.5% | -381.7% | -355.2% | 299.3% |
| |
| Shares outstanding (basic) [+] | 13.4 | 9.7 | 3.8 | 0.8 | 5.7 | 3.5 | 3.5 | 20.1 |
| Growth | 38.1% | 157.9% | 392.6% | -86.5% | 61.0% | 2.2% | -82.8% | 17.6% |
| Shares outstanding (diluted) [+] | 13.4 | 9.7 | 3.8 | 0.8 | 5.7 | 3.5 | 3.6 | 20.1 |
| Growth | 38.1% | 157.9% | 392.6% | -86.5% | 60.8% | -1.1% | -82.2% | 17.5% |
| |
| EBIT is a non-GAAP figure that excludes all non-recurring expenses: restructuring costs, asset impairments, IPR&D writeoffs, and other unusual charges. |