Exhibit 99.1 Company has entered into a definitive merger agreement with Ryerson Strong performance from Specialty Metals Segment and manufactured products companies drove third-quarter earnings Proven track record of acquisitions and organic growth initiatives underscores a stronger, more resilient Company CLEVELAND — October 28, 2025 — Olympic Steel, Inc. (Nasdaq: ZEUS), a leading national metals service center, today announced financial results for the three months ended September 30, 2025. Net income fo ...