| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Ni Ping | Assistant Secretary/Treasurer | 8550 MOSLEY ROAD, HOUSTON | Michael W. Metcalf, Power of Attorney for Ping Ni | 2025-10-01 | 0002024984 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | POWL | Common Stock | Tax liability | -$17.2K | -57 | -2.35% | $301.28 | 2.37K | Sep 30, 2025 | Direct | F1, F2 |
| transaction | POWL | Common Stock | Award | $28.7K | +100 | +4.21% | $287.18 | 2.47K | Oct 1, 2025 | Direct | F2, F3 |
| Id | Content |
|---|---|
| F1 | Represents the average of the high and low stock price on 09/30/2025. |
| F2 | Includes shares that have a time-based vesting provision. |
| F3 | Represents the average closing stock price from September 1, 2025 - September 30, 2025. |