X0306 4 2017-08-09 0000004281 Arconic Inc. ARNC 0001182045 ALBAUGH JAMES F 390 PARK AVENUE NEW YORK, NY 10022 1 0 0 0 Common Stock 2017-08-09 4 P 0 5000 24.9438 A 9409 D The price reported in column 4 is a weighted average price. The shares were purchased in multiple transactions at prices ranging from $24.905 to $24.97. 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 2017-08-10