Exhibit 99.1 FOR IMMEDIATE RELEASE Stoneridge Reports First Quarter 2024 Results Maintains Previously Provided Full-Year 2024 Guidance Driven by Sales Growth and Operating Performance for the Remainder of the Year 2024 First Quarter Results • Sales of $239.2 million • Gross profit of $48.4 million (20.2% of sales) • Operating income of $0.3 million (0.1% of sales) ◦ Q1 operating income unfavorably impacted by incremental warranty-related expenses of ~$2.0 million • EBITDA of $6.6 million (2.8% of sales) ◦ Q ...