X0306 4 2018-11-05 0 0000080420 POWELL INDUSTRIES INC POWL 0001760055 METCALF MICHAEL WILLIAM 8550 MOSLEY ROAD HOUSTON TX 77075 0 1 0 0 Exec Vice President Common Stock 2018-11-05 2018-11-05 4 A 0 3200 0.00 A 3200 D Represents time-based RSU awards that will vest in three equal annual installments on the first, second and third anniversaries of October 1, 2018, subject to the Reporting Person's continued employment with the Company. Don R. Madison, Power of Attorney for Michael W. Metcalf 2018-11-27