| 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 | 09 Feb 2026 | 0002025133 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | POWL | Common Stock | Sale | $275,000 | -500 | -6.7% | $550.00 | 6,933 | 06 Feb 2026 | Direct | F1 |
| transaction | POWL | Common Stock | Sale | $722,748 | -1,300 | -19% | $555.96 | 5,633 | 06 Feb 2026 | Direct | F1, F2 |
| transaction | POWL | Common Stock | Sale | $392,035 | -700 | -12% | $560.05 | 4,933 | 06 Feb 2026 | Direct | F1, F3 |
| transaction | POWL | Common Stock | Sale | $282,530 | -500 | -10% | $565.06 | 4,433 | 06 Feb 2026 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | Includes shares that have a time-based vesting provision. |
| F2 | The price reported in Column 4 is an average price; shares were sold in multiple transactions. Reporting range is $555.74-$556.23, inclusive. Reporting person, upon request, will provide Powell Industries, Inc. or the staff of the Securities & Exchange Commission full information regarding the number of shares sold at each price within the ranges set for in this footnote. |
| F3 | The price reported in Column 4 is an average price; shares were sold in multiple transactions. Reporting range is $560.05-$560.34, inclusive. Reporting person, upon request, will provide Powell Industries, Inc. or the staff of the Securities & Exchange Commission full information regarding the number of shares sold at each price within the ranges set for in this footnote. |