Alcoa Corp — Proxy Solicitation & Information Statement 2025

Mar 19, 2025

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549

SCHEDULE 14A

(RULE 14a-101)

INFORMATION REQUIRED IN PROXY STATEMENT

SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

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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 Pursuant to §240.14a-12

ALCOA CORPORATION

(Name of Registrant as Specified In Its Charter)

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

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

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