X0609 4 2026-09-15 0000913142 BELDEN INC. BDC 0001967061 Lieser Brian false C/O BELDEN INC. 1 N. BRENTWOOD BLVD., 15TH FLOOR ST. LOUIS MO 63105 false true false false EVP - Chief Comm. Officer true Common Stock 2026-09-15 4 S false 1900 114.39 D 31144 D Common Stock 636.2114 I By 401(k) Plan The sale reported was effected pursuant to a Rule 10b5-1 trading plan adopted by Mr. Lieser on August 11, 2025. Represents the balance of shares of Belden Inc. common stock held in the Belden Retirement Savings Plan as of the date of this filing. /s/ Brian E. Anderson, attorney-in-fact for Brian Lieser 2026-09-16