| In millions, except per share items | Dec-31-22 | Dec-31-21 | Dec-31-20 | Dec-31-19 |
| | 8-K | 10-K | 10-K | S-1 |
| Net income | -95.4 | 120.7 | -307.0 | -15.8 |
| Depreciation and amortization | 1.1 | 1.1 | 0.6 | |
| Stock-based compensation | 11.6 | 18.5 | 2.8 | |
| Change in working capital [+] | -8.4 | 31.4 | 9.3 | |
| Other current assets | -2.2 | -14.4 | -3.6 | |
| Accounts payable | 0.4 | 1.6 | -1.0 | |
| Accrued expenses | -1.5 | 7.0 | 1.8 | |
| Income taxes | | 32.3 | 11.8 | |
| Other | -5.0 | 4.8 | 0.2 | |
| Other operating activities | 3.3 | -258.3 | 261.9 | |
| Cash from operations | -87.9 | -86.7 | -32.5 | -15.8 |
| |
| Capital expenditures | 0.0 | -3.0 | -1.5 | 0.0 |
| Purchases of property and equipment | | -3.0 | -1.5 | |
| Purchases of intangible assets | -0.2 | -0.1 | -0.1 | |
| Other cash from investing | -0.5 | | | |
| Cash from investing | -0.7 | -3.1 | -1.6 | 0.0 |
| |
| Issuance of common stock, net | | 198.2 | | |
| Option exercises | 0.8 | 0.3 | 0.1 | |
| Financing costs | | -0.1 | 0.0 | |
| Other cash from financing | -8.7 | 28.9 | 44.7 | |
| Cash from financing | -9.5 | 226.8 | 44.7 | 0.0 |
| |
| Free cash flow | -87.9 | -89.7 | -34.0 | -15.8 |
| Per share (diluted) | ($1.08) | ($1.26) | ($0.54) | ($0.16) |
| |
| Cash paid for interest | 2.4 | 2.5 | 0.4 | |
| Cash paid for income taxes | | 0.0 | 0.0 | |