In millions, except per share items | Dec-31-22 | Dec-31-21 | Dec-31-20 | Dec-31-19 |
| 10-K | 10-K | 10-K | 10-K |
Revenues | 381.2 | 90.9 | 59.1 | 79.5 |
Revenues growth | 319.2% | 54.0% | -25.7% | |
Cost of sales | 377.7 | 96.8 | 54.4 | 71.0 |
Gross profit (loss) | 3.5 | -5.9 | 4.6 | 8.6 |
Gross margin | 0.9% | -6.5% | 7.9% | 10.8% |
|
Operating expenses: | | | | |
Research and development | 47.5 | 40.6 | 29.5 | 24.8 |
Selling, general and administrative expenses | 81.0 | 71.9 | 29.5 | 27.5 |
Impairment of goodwill | | | 3.0 | |
Total operating expenses | 128.5 | 112.5 | 61.9 | 52.3 |
Loss from operations | -125.0 | -118.4 | -57.2 | -43.7 |
Operating margin | -32.8% | -130.2% | -96.9% | -55.0% |
|
Other (income) expense: | | | | |
Interest expense, net | 21.4 | 4.5 | 6.6 | 0.2 |
Changes in fair value of warrants and conversion option | -49.1 | -12.1 | 0.7 | |
Other expense, net | 2.3 | -0.5 | 0.0 | 0.0 |
Total other (income) expense, net | -25.4 | 3.5 | 7.2 | 0.2 |
Net loss from continuing operations before income taxes | -99.6 | -122.0 | -64.5 | -43.9 |
Income tax expense (benefit) | 0.1 | 0.2 | 0.0 | 0.0 |
Net loss from continuing operations, net of income taxes | -99.7 | -122.2 | -64.5 | |
Net loss from discontinued operations, net of income taxes | -28.2 | -4.0 | -2.6 | |
Net loss attributable to common stockholders | -127.9 | -126.2 | -67.2 | -43.9 |
|
Net loss per common share: | | | | |
Basic net loss per common share from continuing operations (in usd per share) | 0.0 | 0.0 | 0.0 | |
Diluted net loss per common share from continuing operations (in usd per share) | 0.0 | 0.0 | 0.0 | |
Basic net loss per common share from discontinued operations (in usd per share) | 0.0 | 0.0 | 0.0 | |
Diluted net loss per common share from discontinued operations | 0.0 | 0.0 | 0.0 | |
|
Basic total net loss per common share (in usd per share) | ($0.71) | ($1.04) | ($0.81) | ($0.65) |
Diluted total net loss per common share (in usd per share) | ($0.71) | ($1.04) | ($0.81) | ($0.65) |
|
Weighted average shares outstanding: | | | | |
Basic weighted average shares outstanding (in shares) | 179.9 | 121.8 | 83.3 | 67.7 |
Diluted weighted average shares outstanding (in shares) | 179.9 | 121.8 | 83.3 | 67.7 |