Form 4 Filing for Joseph B. Burton

This filing details a transaction by Joseph B. Burton, a director at ACCO BRANDS Corp. On September 9, 2026, Burton acquired 2,538.9 Restricted Stock Units (RSUs) under the company's Incentive Plan. These RSUs are immediately vested but have been deferred under the company's Deferred Compensation Plan for Non-Employee Directors. Each RSU represents the right to one share of common stock, deliverable upon the earlier of Burton's death, disability, or cessation of service as a director. The post-transaction number of shares owned by Burton is 148,780.09. The transaction code is "A" for acquisition, and the price per share was $0.0.