| In millions, except per share items | Mar-31-22 | Mar-31-21 | Mar-31-20 | Mar-31-19 |
| | 10-K | 10-K | 10-K | 10-K |
| Cash flows from operating activities | | | | |
| Net loss | -156.7 | -107.4 | -66.4 | -28.6 |
| |
| Adjustments to reconcile net loss to net cash used in operating activities: | | | | |
| Stock-based compensation | 34.2 | 18.8 | 7.0 | 1.3 |
| Depreciation on property and equipment | 0.1 | 0.1 | 0.0 | 0.0 |
| Non-cash lease expense | 1.1 | 0.9 | | |
| Changes in operating assets and liabilities: | | | | |
| Accounts receivable | -11.6 | -0.6 | | |
| Prepaid expenses and other current assets | 2.1 | 0.8 | -2.8 | -2.5 |
| Accounts payable | 16.3 | 1.3 | 1.0 | -0.9 |
| Accrued expenses | 9.5 | 4.5 | 6.5 | 4.9 |
| Operating lease liabilities | -1.2 | -0.8 | | |
| Net cash used in operating activities | -106.1 | -83.3 | -53.4 | -28.5 |
| |
| Cash flows from investing activities | | | | |
| Purchase of property and equipment | -0.3 | -0.2 | 0.0 | -0.1 |
| Net cash used in investing activities | -0.3 | -0.2 | 0.0 | -0.1 |
| |
| Cash flows from financing activities | | | | |
| Proceeds from stock options exercised | | 0.9 | | |
| Net cash provided by financing activities | 200.1 | 383.1 | 147.0 | 35.6 |