| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| McKertcher Terry B | Vice President, Operations | 8550 MOSLEY ROAD, HOUSTON | Michael W. Metcalf, Power of Attorney for Terry B. McKertcher | 12 Aug 2025 | 0002025133 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | POWL | Common Stock | Sale | $130,370 | -500 | -5.9% | $260.74 | 8,000 | 11 Aug 2025 | Direct | F1 |
| transaction | POWL | Common Stock | Sale | $259,070 | -1,000 | -12% | $259.07 | 7,000 | 11 Aug 2025 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | Includes shares that have a time-based vesting provision. |