Exhibit 99.1 FOR RELEASE – April 29, 2025 (1) First-quarter GAAP results: Sales were $3.45 billion, EPS was$0.18, and operating margin was 12.9%. First-quarter core results: Sales were $3.7 billion, EPS was$0.54, and operating margin was 18%. CORNING, N.Y. — Corning Incorporated (NYSE: GLW) today announced its first-quarter 2025 results and provided its outlook for second-quarter 2025. Wendell P. Weeks, chairman and chief executive officer, said, "Today, we announced strong first-quarter results that exce ...