X0306 4 2020-05-20 0001790982 Arconic Corp ARNC 0001678046 MYERS TIMOTHY DONALD 201 ISABELLA STREET SUITE 200 PITTSBURGH, PA 15212 1 1 0 0 CEO Common Stock 541151 D Common Stock 2020-05-20 4 I 0 12877 10.37 A 12877 I By Company 401K Plan Phantom Stock 2020-05-20 4 I 0 37500 10.37 A Common Stock 37500 37500 D Each phantom stock unit is the economic equivalent of one share of Arconic Corporation common stock. Phantom stock units were acquired under the Arconic Corporation Deferred Compensation Plan and are to be paid out in cash after termination of employment. The reporting person may transfer the phantom stock into an alternative investment account under the Plan at times permitted under the Plan. /s/ Diana Toman (CLO and Corporate Secretary), by power of attorney 2020-05-22