X0508 4 2024-03-12 0000712034 ACCO BRANDS Corp ACCO 0001356797 OCONNOR DEBORAH A C/O ACCO BRANDS CORPORATION LAKE ZURICH IL 60047 1 EVP and CFO 0 Restricted Stock Units 0 2024-03-12 4 A 0 82090 0 A 2027-03-12 2027-03-12 Common Stock 82090 82090 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 12, 2027, provided the Reporting Person remains employed by the Issuer at that time, subject to acceleration as provided in said Plan. /s/ Pamela R. Schneider, Attorney-in-fact for Deborah A. O'Connor 2024-03-14