UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

(Amendment No.        )

Filed by the Registrant x

Filed by a party other than the Registrant ¨

Check the appropriate box:

¨ Preliminary Proxy Statement

¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

¨ Definitive Proxy Statement

x Definitive Additional Materials

¨ Soliciting Material Pursuant to §240.14a-12

HOWMET AEROSPACE INC.

(Name of Registrant as Specified in its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check all boxes that apply):

x No fee required.

¨ Fee paid previously with preliminary materials.

¨ Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11.

HOWMET AEROSPACE INC. C/O CORPORATE SECRETARY’S OFFICE 201 ISABELLA STREET SUITE 200 PITTSBURGH, PA 15212	Your Vote Counts! HOWMET AEROSPACE INC. 2024 Annual Shareholders Meeting Date: May 22, 2024 Time: 12:00 P.M. Eastern Time (ET) Location: www.virtualshareholdermeeting.com/HWM2024 Vote by May 21, 2024 11:59 P.M. ET For shares held in the Howmet Aerospace Employee Savings Plan, vote by May 19, 2024 11:59 P.M. ET
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You invested in HOWMET AEROSPACE INC. and it’s time to vote!You have the right to vote on proposals being presented at the Annual Meeting. This is an important notice regarding the availability of proxy materials for the shareholder meeting to be held on May 22, 2024.

Get informed before you voteView the Notice and Proxy Statement and Annual Report online at www.ProxyVote.com, scan the QR barcode below, OR you can receive a free paper or email copy of the material(s) by requesting prior to May 8, 2024. If you would like to request a copy of the material(s) for this and/or future shareholder meetings, you may (1) visit www.ProxyVote.com, (2) call 1-800-579-1639 or (3) send an email to sendmaterial@proxyvote.com. If sending an email, please include your control number (indicated below) in the subject line. Unless requested, you will not otherwise receive a paper or email copy.

	For complete information and to vote, visit www.ProxyVote.com
	Control #

Smartphone users Point your camera here and vote without entering a control number		Vote Electronically During Meeting* May 22, 2024 12:00 p.m. Eastern Time
	Virtually at: www.virtualshareholdermeeting.com/HWM2024

* Please check the meeting materials for any special requirements for meeting attendance.

V2.0

Vote at www.ProxyVote.com

THIS IS NOT A VOTABLE BALLOT

You cannot use this Notice to vote your shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet or by mail. You may view the proxy materials online at www.ProxyVote.com or easily request a paper or email copy (see above). We encourage you to access and review all of the important information contained in the proxy materials before voting.

		Board
Voting Items		Recommends
1.	Election of Directors
	Nominees:
	1a. James F. Albaugh		For
	1b. Amy E. Alving		For
	1c. Sharon R. Barner		For
	1d. Joseph S. Cantie		For
	1e. Robert F. Leduc		For
	1f.  David J. Miller		For
	1g. Jody G. Miller		For
	1h. John C. Plant		For
	1i.  Ulrich R. Schmidt		For
	1j.  Gunner S. Smith		For
2.	Ratification of the appointment of PricewaterhouseCoopers LLP as the Company’s independent registered public accounting firm for 2024.		For
3.	Advisory vote to approve executive compensation.		For
4.	Approval of the Howmet Aerospace Stock Incentive Plan, as Amended and Restated.		For
5.	Shareholder Proposal regarding shareholder opportunity to vote on excessive golden parachutes.		Against
NOTE: Such other business as may properly come before the meeting or any adjournment thereof.

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