X0306 4/A 2016-02-23 2016-07-06 0 0000080420 POWELL INDUSTRIES INC POWL 0001663174 COPE BRETT ALAN 8550 MOSLEY ROAD HOUSTON TX 77075 1 1 0 0 President & CEO Common Stock 2016-02-23 2016-02-23 4 D 0 3700 0.00 D 9503 D Common Stock 2016-02-23 2016-02-23 4 A 0 5600 0.00 A 15103 D Common Stock 2016-07-01 2016-07-01 4 A 0 5000 0.00 A 20103 D Transaction involved an amendment of an outstanding grant of RSU awards that were originally granted on October 1, 2015, resulting in the deemed cancellation and regrant of the award. The reporting person is filing this amendment to correct an error with respect to the amount of securities deemed to have been cancelled pursuant to the transaction described in footnote (1), which in turn resulted in an error in the amount of securities reported as beneficially owned in subsequent reported transactions. Represents time-based RSU awards that will vest in three equal annual installments on the first, second and third anniversaries of October 1, 2015, subject to the Reporting Person's continued employment with the Company. Represents time-based RSUs that vests 100% on the third anniversary date from the date of grant. Don R. Madison, Power of Attorney for Brett A. Cope 2016-11-15