{"url_path":"/sec/iboc/8-k/2026-05-12/item-5-03","section_key":"item-5-03","section_title":"Item 5.03 ****Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year.**","topic":"sec","document":{"doc_type":"8-K","doc_date":"2026-05-12","source_url":"https://www.sec.gov/Archives/edgar/data/315709/0001104659-26-059135-index.html","accession_number":"0001104659-26-059135","cik":"0000315709","ticker":"IBOC","issuer_name":"INTERNATIONAL BANCSHARES CORP","edgar_url":"https://www.sec.gov/Archives/edgar/data/315709/0001104659-26-059135-index.html","primary_entity_key":"0000315709","primary_entity_name":"INTERNATIONAL BANCSHARES CORP"},"word_count":254,"has_tables":true,"body_markdown":"**Item 5.03****Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year.**\n\n \n\nOn\nMay 12, 2026, the Board of Directors of International Bancshares Corporation (“IBC”) approved and adopted the\nThird Amended and Restated By-Laws of IBC (the “By-Laws”) to remove the requirement\nthat a shareholder or group of shareholders may not institute or maintain a derivative proceeding unless that shareholder or group of\nshareholders beneficially own three percent of IBC’s issued and outstanding common stock, par value $1.00 per share, at the time\nsuch derivative proceeding is instituted.\n\n \n\nIn\naddition, the By-Laws were amended to eliminate the exclusive forum clause which previously designated the Texas Business Court located\nin the Fourth Business Court Division or, if such court lacked jurisdiction the United States\nDistrict Court for the Southern District of Texas, or if such court lacked jurisdiction the state district court of Webb County as the\nsole and exclusive forum for any filing or claim unless agreed to otherwise. The amendments to the By-Laws no longer require that each\nshareholder, director, and officer irrevocably and unconditionally waive any right they may have to a trial by jury in any legal action,\nproceeding, cause of action, or counterclaim concerning any internal entity claim and in any other claim, action, or proceeding against\nIBC, to the fullest extent permitted by applicable law.\n\n \n\nThe\nBy-Laws became effective on May 12, 2026.\n\n \n\nA copy of the By-Laws is attached as Exhibit 3.1,\nto this Current Report on Form 8-K, and is incorporated herein by reference in its entirety."}