UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

SCHEDULE 14A

PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE

SECURITIES EXCHANGE ACT OF 1934

Filed by the Registrant  ☒                             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
☒	Definitive Additional Materials
☐	Soliciting Material Under Rule 14a-12

ARCONIC INC.

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if Other Than the Registrant)

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Arconic (the “Company”) posted the following information to the Company’s Facebook page (https://www.facebook.com/arconic):

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The Company posted the following information to its LinkedIn profile (https://www.linkedin.com/company/arconic):

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The Company sent the following Tweets under the Twitter handle @arconic (https://twitter.com/arconic):

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The Company ran the following advertisements in the Axios Pro Rata email newsletter: