X0306 4/A 2022-12-09 2022-12-13 0 0000080420 POWELL INDUSTRIES INC POWL 0001205075 HONEYCUTT MILBURN E 8550 MOSLEY ROAD HOUSTON TX 77075 0 1 0 0 Vice Pres, Corp Controller Common Stock 2022-12-09 2022-12-09 4 S 0 1200 36.14 D 41516 D Common Stock 2022-12-12 2022-12-12 4 S 0 6300 36.03 D 35216 D Common Stock 399 I 401(k) Shares Correcting Table 1, Column 3, input error; changed from D to S. The price reported in Column 4 is a weighted average price; shares were sold in multiple transactions. Reporting range is $36.00-$36.295, 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 forth in footnote 3. Represents the weighted average price of reporting range in Footnote 2. Includes shares that have a time-based vesting provision of three equal installments from date of grant. The price reported in Column 4 is a weighted average price; shares were sold in multiple transactions. Reporting range is $35.75-$36.61, 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 forth in footnote 6. Represents the weighted average price of reporting range in Footnote 5. Michael W. Metcalf, Power of Attorney for Milburn E. Honeycutt. 2023-02-03