X0306 4/A 2019-08-16 2019-08-20 0000004281 Arconic Inc. ARNC 0001241599 DOTY ELMER L 390 PARK AVENUE NEW YORK, NY 10022 1 0 0 0 Common Stock 2019-08-16 4 F 0 36441 24.84 D 77386 D Represents payment of tax liability by delivering or withholding shares incident to the vesting of a stock award issued in accordance with Rule 16b-3. This amendment is being filed to correct the number of shares withheld for payment of the reporting person's tax liability in connection with the vesting of previously issued restricted stock units, and to correct the number of shares held directly by the reporting person following this change. /s/ Margaret Lam (Assistant Secretary), by power of attorney 2019-09-24