X0206 3/A 2020-04-01 2020-04-10 0 0001790982 Arconic Corp ARNC 0001806213 Vrablec Mark J 201 ISABELLA STREET SUITE 200 PITTSBURGH PA 15212-5872 0 1 0 0 Executive Vice President Common Stock 127052 D Common Stock 3251 I By Company 401(k) Plan Common Stock 3778 I Held in Trust for the Benefit of the Reporting Person Common Stock 2000 I Held in Trust for the Benefit of the Reporting Person's spouse Phantom Stock Common Stock 1290 D Phantom stock units were acquired under the Arconic 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 iinvestment account under the Plan at times permitted under the Plan. Each phantom stock unit is the economic equivalent of one share of Arconic common stock. 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 3 includes (I) shares of Company common stock received by the reporting person in the distribution and (2) shares of Company common stock underlying equity awards resulting fom the adjustment of all Arconic Inc. equity awards held by the reporting person as of the Separation. This amendement includes shares of common stock held in Trust by the reporting person and their spouse but were inadvertently omitted in the original filing on April 10, 2020 Adam Wheeler, Assistant General Counsel and Assistant Corporate Secretary by power of attorney 2021-01-21