X0306 4 2020-02-27 0000004281 Arconic Inc. ARNC 0001509955 Ramundo Katherine H 390 PARK AVENUE NEW YORK, NY 10022 0 1 0 0 EVP, CLO and Corp Secretary Common Stock 2020-02-27 4 S 0 32733 30.5665 D 123209 D The price reported in column 4 is a weighted average price. The shares were purchased in multiple transactions at prices ranging from $30.355 to $30.860. The reporting person undertakes to provide Arconic Inc., any security holder of Arconic Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote. /s/ Margaret Lam (Assistant Secretary), by power of attorney 2020-03-02