X0306 4 2020-04-03 0000004281 Howmet Aerospace Inc. HWM 0001490905 Alving Amy E 201 ISABELLA STREET SUITE 200 PITTSBURGH, PA 15212 1 0 0 0 Common Stock 2020-04-03 4 A 0 3229 12.54 A 23519 D 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. In connection with the Separation, all equity awards held by the reporting person with respect to Arconic Inc.'s common stock as of the Separation will be adjusted in a manner intended to preserve the aggregate intrinsic value of the original award. The amount of securities reported on this Form 4 do not reflect such adjustment, to the extent applicable, and this Form 4 will be amended in a subsequent filing to reflect such adjustment /s/ Margaret Lam (Assistant Secretary), by power of attorney 2020-04-07