Owens ning(OC) - 2025 Q4 - Annual Results

Exhibit 99.1 Owens Corning Reports Fourth-Quarter and Full-Year 2025 Results TOLEDO, Ohio – February 25, 2026 - Owens Corning (NYSE: OC), a building products leader, today reported fourth- quarter and full-year 2025 results. "Our performance in 2025 continued to demonstrate the strength of the company we have built. Through a combination of our strong market positions, improved operating efficiencies, and favorable product mix shifts, we are generating higher margins and operating cash flows on lower market ...