144 0001261117 XXXXXXXX LIVE 0000913142 BELDEN INC. 001-12561 1 NORTH BRENTWOOD BLVD 15TH FLOOR ST. LOUIS MO 63105 314-854-8000 KLEIN JONATHAN C Director Common Commonwealth Financial Network

275 Wyman St Suite 400 Waltham MA 02451

3000 366000.00 39516000 12/10/2025 NYSE Common 05/26/2022 Stock Award Belden N 2810 05/26/2022 N/A Common 05/21/2021 Stock Award Belden N 190 05/21/2021 N/A Y 12/10/2025 Jason Coleman as a duly authorized representative of National Financial Services LLC, as attorney-in-fact for Jonathan C. Klein