| In millions, except per share items | May-31-21 | May-31-20 | May-31-19 | May-31-18 | May-31-17 | May-31-16 | May-31-15 | May-31-14 |
| | 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 | 0.0 |
| Cost of goods sold | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Gross profit | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Selling, general and administrative [+] | 3.5 | 3.2 | 2.7 | 2.1 | 2.0 | 0.6 | 2.6 | 2.6 |
| Sales and marketing | | | | | 1.3 | | 1.9 | 2.0 |
| General and administrative [+] | 3.5 | 3.2 | 2.7 | 2.1 | 0.7 | 0.6 | 0.7 | 0.6 |
| Wages and related expenses | 2.5 | 2.3 | 1.8 | 1.3 | 1.3 | 1.7 | 1.9 | 2.0 |
| General and administrative expenses | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.7 | 0.6 |
| Professional fees | 0.5 | 0.4 | 0.4 | 0.3 | 0.3 | 0.3 | 0.5 | 0.5 |
| Rent expense | 0.0 | 0.0 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| Insurance expense | 0.5 | 0.2 | 0.2 | 0.2 | 0.2 | 0.1 | 0.1 | 0.1 |
| Other selling, general and administrative | | | | | 1.3 | | 1.9 | 2.0 |
| Other operating expenses [+] | 19.8 | 12.8 | 8.1 | 7.3 | 4.8 | 6.7 | | 10.6 |
| Exploration expenses | 14.9 | 9.8 | 5.6 | 5.3 | 3.1 | 2.9 | 5.6 | 8.2 |
| EBITDA [+] | -23.3 | -16.0 | -10.8 | -9.4 | -6.8 | -7.3 | -10.5 | -13.1 |
| EBITDA growth | 46.1% | 47.5% | 15.0% | 39.5% | -7.3% | -30.6% | -20.1% | |
| Depreciation and amortization | 0.1 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| EBIT [+] | -23.4 | -16.0 | -10.8 | -9.4 | -6.8 | -7.3 | -10.5 | -13.2 |
| EBIT growth | 45.9% | 47.9% | 14.9% | 39.3% | -7.3% | -30.5% | -20.0% | |
| Non-recurring items [+] | | | | | | | | 0.0 |
| Asset impairment | | | | | | | | 0.0 |
| Interest income, net [+] | 0.0 | 0.3 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Interest expense | 0.0 | 0.0 | | | | | 0.0 | |
| Interest income | 0.1 | 0.3 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Other income (expense), net [+] | 0.3 | -0.4 | -0.1 | 0.1 | 0.0 | -0.1 | -0.1 | 1.5 |
| Gain (loss) on foreign currency transactions | -0.3 | 0.4 | 0.1 | -0.1 | 0.0 | 0.1 | 0.1 | 0.0 |
| Other | | | | | | | 0.0 | 1.5 |
| Pre-tax income | -23.1 | -16.2 | -10.9 | -9.3 | -6.7 | -7.4 | -10.6 | -11.7 |
| 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 | -23.1 | -16.2 | -10.9 | -9.3 | -6.7 | -7.4 | -10.6 | -11.7 |
| |
| Basic EPS [+] | ($0.18) | ($0.14) | ($0.10) | ($0.09) | ($0.07) | ($0.09) | ($0.14) | ($0.17) |
| Growth | 35.9% | 35.3% | 8.9% | 25.6% | -17.0% | -37.2% | -18.5% | |
| Diluted EPS [+] | ($0.18) | ($0.14) | ($0.10) | ($0.09) | ($0.07) | ($0.09) | ($0.14) | ($0.17) |
| Growth | 35.9% | 35.3% | 8.9% | 25.6% | -17.0% | -37.2% | -18.5% | |
| |
| Shares outstanding (basic) [+] | 125.7 | 119.7 | 108.6 | 101.3 | 92.0 | 84.5 | 75.5 | 67.9 |
| Growth | 4.9% | 10.3% | 7.2% | 10.1% | 9.0% | 11.9% | 11.3% | |
| Shares outstanding (diluted) [+] | 125.7 | 119.7 | 108.6 | 101.3 | 92.0 | 84.5 | 75.5 | 67.9 |
| Growth | 4.9% | 10.3% | 7.2% | 10.1% | 9.0% | 11.9% | 11.3% | |
| |
| EBIT is a non-GAAP figure that excludes all non-recurring expenses: restructuring costs, asset impairments, IPR&D writeoffs, and other unusual charges. |