X0508 4 2026-03-10 0000712034 ACCO BRANDS Corp ACCO 0001491769 Tedford Thomas W C/O ACCO BRANDS CORPORATION LAKE ZURICH IL 60047 1 1 President & CEO 0 Common Stock 2026-03-10 4 M 0 219916 0 A 709243 D Common Stock 2026-03-10 4 F 0 64437 3.635 D 644806 D Performance Stock Units (2023-2025) 0 2026-03-10 4 A 0 219916 0 A Common Stock 219916 219916 D Performance Stock Units (2023-2025) 0 2026-03-10 4 M 0 219916 0 D Common Stock 219916 0 D Restricted Stock Units 0 2026-03-11 4 A 0 644258 0 A 2029-03-11 2029-03-11 Common Stock 644258 644258 D Reflects performance stock units ("PSUs") granted under the Issuer's Incentive Plan that were earned by the Reporting Person during a three-year performance period. Subject to the Reporting Person's continued employment, earned PSUs become eligible for settlement into shares of common stock upon the completion of the final performance period in the three-year cycle. Restricted Stock Units (RSUs) granted under the Issuer's Incentive Plan. Each RSU represents the right to receive one share of the Issuer's common stock on March 11, 2029, provided that the Reporting Person remains employed by the Issuer at that time, subject to acceleration as provided in said Plan. /s/ Kathryn D. Ingraham, Attorney-in-fact for Thomas W. Tedford 2026-03-12