X0206 3 2020-04-01 1 0000004281 Howmet Aerospace Inc. HWM 0001184190 LEDUC ROBERT F 201 ISABELLA STREET SUITE 200 PITTSBURGH, PA 15212-5872 1 0 0 0 Exhibit List: Exhibit 24 - Power of Attorney - Robert F Leduc No securities are beneficially owned /s/ Margaret Lam (Assistant Secretary, by power of attorney 2020-04-02