BEL FUSE INC /NJ

We are furnishing proxy materials to shareholders over the Internet. As a result, beginning on or about April 10, 2026, we sent by mail or e-mail a Notice of Internet Availability of Proxy Materials containing instructions on how to access our proxy materials, including our Proxy Statement and Annual Report on Form 10-K, over the Internet and how to vote your shares of Class A Common Stock. Internet availability of our proxy materials is designed to expedite receipt by shareholders and lower the cost and environmental impact of our Annual Meeting. However, if you received such a notice and would prefer to receive paper copies of our proxy materials, please follow the instructions included in the Notice of Internet Availability of Proxy Materials.

If you received your proxy materials via e-mail, the e-mail contains voting instructions, including a control number required to vote your shares of Class A Common Stock, and links to the Proxy Statement and the Annual Report on Form 10-K on the Internet. If you received your proxy materials by mail, the Notice of Annual Meeting, Proxy Statement, Annual Report on Form 10-K, and, as to holders of Class A Common Stock, the proxy card, are enclosed.

If you hold our Class A Common Stock through more than one account, you may receive multiple copies of these proxy materials and will have to follow the instructions for each in order to vote all of your shares of Class A Common Stock.