X0508 4 2023-08-18 true 0001790982 Arconic Corp ARNC 0001037839 CROISETIERE JACQUES M 201 ISABELLA STREET PITTSBURGH PA 15212 true false Restricted Stock Units 2023-08-18 4 D 0 5194 30 D 0 D Deferred Stock Units 2023-08-18 4 D 0 28124 30 D 0 D Represents shares of Arconic Corporation ("Arconic") common stock disposed of in connection with the Agreement and Plan of Merger (the "Merger Agreement"), dated as of May 4, 2023, by and among Arconic and affiliates of funds managed by Apollo Global Management, Inc. In accordance with the Merger Agreement, at the effective time of the merger contemplated thereby (the "Effective Time"), each share of Arconic common stock held by the reporting person was converted into the right to receive $30.00 in cash (the "Merger Consideration"). In accordance with the Merger Agreement, at the Effective Time, each (a) restricted stock unit award, other than performance-based restricted stock units, and (b) deferred stock unit award under the Arconic Corporation Amended and Restated 2020 Deferred Fee Plan for Directors was cashed out based on the Merger Consideration. /s/ Adam Wheeler, Vice President and Secretary by Power of Attorney 2023-08-18