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Stock-Based Compensation | 9 Months Ended
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Feb. 28, 2026
Share-Based Payment Arrangement [Abstract] |
Stock-Based Compensation | STOCK-BASED COMPENSATION The following table summarizes stock-based compensation expense included in Selling, general and administrative expenses for the periods indicated:
| Three months ended | Nine months ended
| February 28, | February 28, | February 28, | February 28,
| 2026 | 2025 | 2026 | 2025
Stock option expense | $ | 0.1 |  |  | $ | 0.2 |  |  | $ | 0.6 |  |  | $ | 1.0 |  |
Restricted stock unit expense |  | 2.0 |  |  |  | 2.1 |  |  |  | 5.6 |  |  |  | 5.3 |  |
Management stock purchase plan |  | 0.0 |  |  |  | 0.0 |  |  |  | 0.1 |  |  |  | 0.1 |  |
Employee stock purchase plan |  | 0.1 |  |  |  | 0.1 |  |  |  | 0.3 |  |  |  | 0.3 |  |
Total stock-based compensation expense | $ | 2.2 |  |  | $ | 2.4 |  |  | $ | 6.6 |  |  | $ | 6.7 |  |
The following table sets forth Common Stock issued pursuant to stock-based compensation plans for the periods indicated:
| Three months ended |  | Nine months ended
| February 28, |  | February 28, |  | February 28, |  | February 28,
| 2026 |  | 2025 |  | 2026 |  | 2025
Common Stock issued pursuant to stock-based compensation plans (in millions) | 0.2 |  | 0.1 |  | 0.6 |  | 0.3

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