Exhibit 99 A.B. Mendez Investor Relations 210.220.5234 or Bill Day Media Relations 210.220.5427 FOR IMMEDIATE RELEASE October 30, 2025 CULLEN/FROST REPORTS THIRD QUARTER RESULTS Board declares fourth quarter dividend on common and preferred stock SAN ANTONIO -- Cullen/Frost Bankers, Inc. (NYSE:CFR) today reported third quarter 2025 results. Net income available to common shareholders for the third quarter of 2025 was $172.7 million compared to$144.8 million for the third quarter of 2024. On a per-share bas ...