Exhibit 99.1 1 North Brentwood Boulevard Phone: 314.854.8000 15th Floor Fax: 314.854.8003 St. Louis, Missouri 63105 www.Belden.com News Release Belden Reports First Quarter 2024 Results and Acquisition of Precision Optical Technologies, Inc. St. Louis, Missouri – May 2, 2024 - Belden Inc. (NYSE: BDC) (the “Company”), a leading global supplier of network infrastructure and digitization solutions, today reported fiscal first quarter results for the period ended March 31, 2024. First Quarter 2024 Highlights • ...