ACCO BRANDS Corp — Proxy Solicitation & Information Statement 2023

May 1, 2023

DEFA14A 1 2023_proxy_disclosure_ad.htm DEFA14A DEFA14A

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A INFORMATION

(Rule 14a-101)

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 ☐

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☐ 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

ACCO BRANDS CORPORATION

(Name of Registrant as Specified in Its Charter)

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☐ Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11