---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-23-024185"
form_type: "8-K"
ticker: "IBOC"
cik: "0000315709"
company_name: "INTERNATIONAL BANCSHARES CORP"
filed_at: "2023-02-22T23:59:59+00:00"
generated_at: "2026-06-19T05:36:45.228180+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.1
calibrated_materiality_score: 0.1
confidence: "high"
source: SEC EDGAR
---

# IBC amends bylaws to adopt universal proxy card rules per SEC requirements

## Summary
- Board approved amended bylaws effective February 21, 2023.
- Section 12 updated for dissident shareholder nominations and universal proxy card compliance.
- Amendment addresses SEC universal proxy card requirements for contested director elections.
- No other material changes to governance or fiscal year.

## SEC filing metadata
- accession: 0001104659-23-024185
- form_type: 8-K
- ticker: IBOC
- cik: 0000315709
- company_name: INTERNATIONAL BANCSHARES CORP
- filed_at: 2023-02-22T23:59:59+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.1
- calibrated_materiality_score: 0.1
- confidence: high
- sec_items: 5.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/315709/000110465923024185/0001104659-23-024185-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/315709/000110465923024185/tm237311d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-23-024185
- JSON: https://secwatch.observer/filing/0001104659-23-024185.json
- Plain text: https://secwatch.observer/filing/0001104659-23-024185.txt

## Key facts
- Governance Changes
  INTERNATIONAL BANCSHARES CORP: Amended Section 12 of the By-laws to comply with new SEC universal proxy card requirements for contested director elections and shareholder proposals (effective 2023-02-21).
  - Change: bylaw amendment
  - Effective: 2023-02-21
  source text: Section 12 of the By-laws was amended based on the recent SEC requirements for a Universal Proxy Card in the event of a contested election of directors and shareholder proposal requirements.
  evidence_url: https://www.sec.gov/Archives/edgar/data/315709/000110465923024185/0001104659-23-024185-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.