X0306 4 2021-01-29 0000004281 Howmet Aerospace Inc. HWM 0001653964 Oal Tolga I 201 ISABELLA STREET SUITE 200 PITTSBURGH PA 15212-5872 1 1 0 0 Co-Chief Executive Officer Phantom Stock Units 2021-01-29 4 A 0 265 24.755 A Common Stock 265 7922 D Each phantom stock unit is the equivalent of one share of Howmet Aerospace common stock Phantom stock units were acquired under the Howmet Aerospace Deferred Compensation Plan and are to be paid out in cash at the termination of employment. The reporting person may transfer the phantom stock into an alternative investment account under the Plan at times permitted under the Plan. /s/ Margaret Lam, Assistant Secretary / Attorney of Fact 2021-02-02