| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| METCALF MICHAEL WILLIAM | Exec Vice President | 8550 MOSLEY ROAD, HOUSTON | Michael W. Metcalf | 03 Dec 2025 | 0001760055 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | POWL | Common Stock | Award | $2,205,210 | +7,000 | +30% | $315.03 | 30,300 | 01 Dec 2025 | Direct | F1, F2, F3 |
| Id | Content |
|---|---|
| F1 | Shares granted under the Company's long-term equity compensation plan (performance-vesting restricted stock unit agreement). |
| F2 | Represents the average of the high and low stock price on 12/01/2025. |
| F3 | Includes shares that have a time-based vesting provision. |