X0508 4 2025-09-10 0000712034 ACCO BRANDS Corp ACCO 0002075539 Peters John C/O ACCO BRANDS LAKE ZURICH IL 60047 1 SVP ACCO Brands, Pres. No. Ame 0 Restricted Stock Units 0 2025-09-10 4 A 0 405.2 0 A 2028-07-01 2028-07-01 Common Stock 405.2 21853.2 D Restricted Stock Units 0 2025-09-10 4 A 0 332.1 0 A 2026-03-14 2026-03-14 Common Stock 332.1 17909.1 D Restricted Stock Units 0 2025-09-10 4 A 0 386.8 0 A 2027-03-12 2027-03-12 Common Stock 386.8 20860.8 D Restricted Stock Units 0 2025-09-10 4 A 0 406.5 0 A 2028-03-11 2028-03-11 Common Stock 406.5 21924.5 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 July 1, 2028, provided that the Reporting Person remains employed by the Issuer at that time, subject to acceleration as provided in said Plan. Represents Restricted Stock Units (RSUs) acquired pursuant to the dividend equivalent provisions of the Reporting Person's earned and outstanding RSU awards. 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 14, 2026, provided that the Reporting Person remains employed by the Issuer at that time, subject to acceleration as provided in said Plan. The number of derivative securities beneficially owned includes an additional 2,221 shares underlying the RSUs that were inadvertently excluded in the total number reported in the Reporting Person's Form 3. Restricted Stock Unites (RSUs) granted under the Issuer's Incentive Plan. Each RSU represents the right to receive one share of the Issuer's common stock March 12, 2027, provided that the Reporting Person remains employed by the Issuer at that time, subject to acceleration as provided in said Plan. The number of derivative securities beneficially owned includes an additional 1,817 shares underlying the RSUs that were inadvertently excluded in the total number reported in the Reporting Person's Form 3. 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. The number of derivative securities beneficially owned includes an additional 814 shares underlying the RSUs that were inadvertently excluded in the total number reported in the Reporting Person's Form 3. Kathryn D. Ingraham, attorney-in-fact for John Peters 2025-09-12