Transaction Details

Footnotes

Represents payment of tax liability by delivering or withholding shares incident to the vesting of a stock award issued in accordance with Rule 16b-3. | Reflects granted restricted share unit awards that are subject to vesting and tax withholding upon vesting. | The price reported in column 4 is a weighted average price. The shares are sold in multiple transactions at prices from $250.07 to $253.00. The reporting person undertakes to provide Howmet Aerospace Inc. ("Howmet"), any security holder of Howmet, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each price within the range set forth in this footnote. | Shares held in a revocable trust, of which the reporting person is trustee and beneficiary, and has voting and investment power.