Exhibit 99.1 RBB Bancorp Reports Fourth Quarter and Fiscal Year 2025 Earnings and Declares Quarterly Cash Dividend of $0.16 Per Common Share Los Angeles, CA, January 26, 2026 – RBB Bancorp (NASDAQ:RBB) and its subsidiaries, Royal Business Bank (the "Bank") and RBB Asset Management Company ("RAM"), collectively referred to herein as the "Company," announced financial results for the quarter and fiscal year ended December 31, 2025. Fourth Quarter 2025 Highlights Fiscal 2025 Highlights The Company reported net ...