Exhibit 99.1 FOR IMMEDIATE RELEASE BENCHMARK REPORTS FIRST QUARTER 2024 RESULTS TEMPE, AZ, May 1, 2024 – Benchmark Electronics, Inc. (NYSE: BHE) today announced financial results for the first quarter ended March 31, 2024. First quarter 2024 results: • Revenue of $676 million • Generated net cash provided by operations of$48 million and positive free cash flow(1) of $43 million • GAAP and non-GAAP(1) gross margin of 10.0% • GAAP and non-GAAP(1) operating margin of 3.8% and 4.9%, respectively • GAAP and non ...