{"schema_version":"secwatch.filing_event.v1","accession":"0001104659-26-059135","form_type":"8-K","ticker":"IBOC","cik":"0000315709","company_name":"INTERNATIONAL BANCSHARES CORP","filed_at":"2026-05-12T15:01:07+00:00","discovered_at":"2026-05-12T15:02:00.760735+00:00","generated_at":"2026-05-12T15:02:30.265239+00:00","sec_items":["5.03","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.25,"calibrated_materiality_score":0.25,"confidence":"high","headline":"International Bancshares amends bylaws to remove 3% derivative standing, exclusive forum, jury waiver","bullets":["Removed requirement that shareholders must beneficially own 3% of stock to bring derivative proceedings.","Eliminated exclusive forum clause that designated Texas Business Court as sole venue for claims.","Removed mandatory jury trial waiver for internal entity claims against IBC.","Amendments adopted by Board and effective May 12, 2026."],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-26-059135","json":"https://secwatch.observer/filing/0001104659-26-059135.json","markdown":"https://secwatch.observer/filing/0001104659-26-059135.md","text":"https://secwatch.observer/filing/0001104659-26-059135.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/315709/000110465926059135/0001104659-26-059135-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/315709/000110465926059135/tm2614341d1_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-12T15:02:30.265239+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[{"claim_id":"99e2b1a518730e38244e9b9f5cf7b0a1a7e2e552","claim":"INTERNATIONAL BANCSHARES CORP: Removed 3% beneficial ownership threshold for derivative proceedings, eliminated exclusive forum clause, and removed jury trial waiver requirement (effective 2026-05-12).","evidence_excerpt":"Third Amended and Restated By-Laws of IBC (the “By-Laws”) to remove the requirement that a shareholder or group of shareholders may not institute or maintain a derivative proceeding unless that shareholder or group of shareholders beneficially own three percent of IBC’s issued and outstanding common stock, par value $1.00 per share, at the time such derivative proceeding is instituted. In addition, the By-Laws were amended to eliminate the exclusive forum clause","evidence_source":"SEC 8-K Item 5.03/5.05/5.06","evidence_url":"https://www.sec.gov/Archives/edgar/data/315709/000110465926059135/0001104659-26-059135-index.htm","confidence":0.9,"family_label":"Governance Changes","details":[{"label":"Change","value":"bylaw amendment"},{"label":"Effective","value":"2026-05-12"}],"fact_type":"governance_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}