Exhibit 99.1 Press Release dated February 9, 2026 SIMPSON MANUFACTURING CO., INC. ANNOUNCES 2025 FOURTH QUARTER AND FULL YEAR FINANCIAL RESULTS; PROVIDES 2026 OUTLOOK 2025 Fourth Quarter Highlights 2025 Full Year Highlights Pleasanton, CA - February 9, 2026: Simpson Manufacturing Co., Inc. (the "Company") (NYSE: SSD), an industry leader in engineered structural connectors and building solutions, today announced its financial results for the fourth quarter and full year of 2025. All comparisons below (which ...