X0306 4 2020-04-17 0001790982 Arconic Corp ARNC 0001678046 MYERS TIMOTHY DONALD 201 ISABELLA STREET SUITE 200 PITTSBURGH, PA 15212 1 1 0 0 CEO Common Stock 2020-04-17 4 A 0 317846 0 A 541151 D Common Stock 20614 I By Company 401K Plan On April 1, 2020, Arconic Inc. completed the separation of its business into two independent, publicly-traded companies (the Separation), Howmet Aerospace Inc. and Arconic Corporation (the Company), by distributing all outstanding shares of the Company to its shareholders. The number of Company shares and share equivalents reported on this Form 4 includes (1) shares of Company common stock received by the reporting person in the Distribution; and (2) shares of Company common stock underlying equity awards resulting from the adjustment of all Arconic Inc. equity awards held by the reporting person as of the Separation. /s/ Diana Toman (CLO and Corporate Secretary), by power of attorney 2020-04-21