Exhibit 99.1 NEWS RELEASE Olympic Steel Reports First-Quarter 2025 Results Diversification strategy and commitment to operational disciplines continue to deliver solid results Company's flat-rolled shipping levels up 24% and 6% versus fourth quarter and first quarter of 2024, respectively Olympic Steel is well-positioned to support increased manufacturing in the U.S. CLEVELAND — (May 1, 2025) — Olympic Steel, Inc. (Nasdaq: ZEUS), a leading national metals service center, today announced financial results fo ...