Exhibit 99.1 Bel Fuse Inc. 300 Executive Drive FOR IMMEDIATE RELEASE Suite 300 West Orange, NJ 07052 www.belfuse.com tel 201.432.0463 Bel Reports First Quarter 2024 Results Sustained Gross Margin Performance with Sales in Expected Range Provides Q2-24 Sales and Gross Margin Guidance WEST ORANGE, NJ, Thursday, April 25, 2024-- Bel Fuse Inc. (Nasdaq: BELFA and BELFB) today announced preliminary financial results for the first quarter of 2024. First Quarter 2024 Highlights • Net sales of $128.1 million compare ...