X0508 4 2025-03-11 0000712034 ACCO BRANDS Corp ACCO 0001699869 Monko Cezary L C/O ACCO BRANDS CORPORATION LAKE ZURICH IL 60047 1 Exec VP; Pres ACCO Brands EMEA 0 Common Stock 2025-03-11 4 M 0 6906 0 A 276532 D Restricted Stock Units 0 2025-03-11 4 A 0 95239 0 A 2028-03-11 2028-03-11 Common Stock 95239 95239 D Performance Stock Unit 2022-2024 0 2025-03-11 4 A 0 6906 0 A Performance Stock Units (2022-2024) 6906 6906 D Performance Stock Unit 2022-2024 0 2025-03-11 4 M 0 6906 0 D Performance Stock Units (2022-2024) 6906 0 D 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, 2028, provided that the Reporting Person remains employed by the Issuer at that time, subject to acceleration as provided in said Plan. 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. /s/ Pamela R. Schneider, Attorney-in-fact for Cezary Monko 2025-03-13