International Bancshares (IBOC) - 2025 Q4 - Annual Results

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15 (d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 26, 2026 INTERNATIONAL BANCSHARES CORPORATION (Exact name of registrant as specified in its charter) (State or other jurisdiction (Commission File (IRS Employer of incorporation) Number) Identification No.) 1200 San Bernardo, Laredo, Texas 78040-1359 (Address of principal executive of ...