Third Amendment to the Howmet Aerospace Hourly Retirement Savings Plan, as Amended and Restated

Pursuant to Section 20(a) of the HOWMET AEROSPACE HOURLY RETIREMENT SAVINGS PLAN (“Plan”), which provides that the Plan may be amended by action of the Board or Benefits Management Committee, the Plan is amended as described below. Unless specifically stated otherwise, any reference in this Amendment to “Section” is intended to refer to the applicable Section of the Plan, including the Sections of the Howmet Aerospace Niles Bargaining Retirement Savings Plan (“Niles Union Plan”) that continue to apply following the merger of the Niles Union Plan into the Plan. This amendment is effective on the dates specified below.

Effective beginning January 1, 2024, Schedule B-1 of the Plan is amended to increase the Participating Employer Contributions (Match) on an annual basis for bargaining unit members working at the Whitehall, Michigan location by replacing the current Whitehall, Michigan provisions with the following:

In all other respects, the Plan is unchanged.