{"url_path":"/sec/iboc/8-k/2026-05-20/cover-page","section_key":"cover-page","section_title":"Cover Page","topic":"sec","document":{"doc_type":"8-K","doc_date":"2026-05-20","source_url":"https://www.sec.gov/Archives/edgar/data/315709/0001104659-26-064211-index.html","accession_number":"0001104659-26-064211","cik":"0000315709","ticker":"IBOC","issuer_name":"INTERNATIONAL BANCSHARES CORP","edgar_url":"https://www.sec.gov/Archives/edgar/data/315709/0001104659-26-064211-index.html","primary_entity_key":"0000315709","primary_entity_name":"INTERNATIONAL BANCSHARES CORP"},"word_count":311,"has_tables":true,"body_markdown":"false\n0000315709\n\n0000315709\n\n2026-05-18\n2026-05-18\n\niso4217:USD\n\nxbrli:shares\n\niso4217:USD\n\nxbrli:shares\n\n \n\n \n\n \n\n**UNITED STATES**\n\n**SECURITIES AND EXCHANGE COMMISSION**\n\n**Washington, D.C.  20549**\n\n \n\n**FORM 8-K**\n\n \n\n**CURRENT REPORT**\n\n**Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934**\n\n \n\nDate of Report (Date of earliest event reported):\n**May 18, 2026**\n\n \n\n**INTERNATIONAL BANCSHARES CORPORATION**\n\n(Exact name of registrant as specified in\nits charter)\n\n \n\n**Texas**\n \n**000-9439**\n \n**74-2157138**\n\n(State or other\njurisdiction\n\nof incorporation)\n \n\n(Commission\n\nFile Number)\n\n \n(IRS Employer\n\nIdentification No.)\n\n \n\n**1200 San Bernardo, Laredo, Texas**\n \n**78040-1359**\n\n(Address of principal executive offices)\n \n(Zip Code)\n\n \n\nRegistrant’s telephone number, including\narea code: **  (956) 722-7611**\n\n \n\n**None**\n\n(Former name or former address, if changed\nsince last report.)\n\n \n\nCheck the appropriate box below if the Form 8-K filing\nis intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General\nInstruction A.2.below):\n\n \n\n¨\nWritten communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)\n\n \n\n¨\nSoliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)\n\n \n\n¨\nPre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))\n\n \n\n¨\nPre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 250.13e-4(c))\n\n \n\nSecurities registered pursuant to Section 12(b) of\nthe Act:\n\n \n\n**Title of each class:**\n \n**Trading Symbol(s)**\n \n**Name of each exchange on which registered:**\n\nCommon Stock, $1.00 par value\n \nIBOC\n \nThe Nasdaq Stock Market\n\n \n\nIndicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405\nof this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).\n\n \n\nEmerging growth\ncompany ¨\n\n \n\nIf an emerging\ngrowth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with\nany new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨"}