---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-113899"
form_type: "8-K"
ticker: "IBOC"
cik: "0000315709"
company_name: "INTERNATIONAL BANCSHARES CORP"
filed_at: "2026-10-06T12:08:02+00:00"
generated_at: "2026-10-12T16:33:11.591975+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# International Bancshares to move primary listing from Nasdaq to Texas Stock Exchange on Oct. 19

## Summary
- Nasdaq trading of IBOC expected to cease at close Friday, Oct. 16, 2026; TXSE trading begins at market open Monday, Oct. 19, 2026 under the same ticker "IBOC".
- Company, a $17 billion Texas bank holding company founded in Laredo in 1966, serves 75 communities across Texas and Oklahoma through five subsidiary banks.
- Board-authorized notice given to Nasdaq on Oct. 6, 2026; IBC says its Texas operations, customer base and community ties drove the decision.
- Chairman/CEO Dennis E. Nixon cited 60 years of Texas business; TXSE Chairman/CEO James H. Lee called IBC "one of the great franchises in Texas banking."
- No shareholder action is required; IBC plans a closing-bell ceremony in Houston on Dec. 7, 2026.

## SEC filing metadata
- accession: 0001104659-26-113899
- form_type: 8-K
- ticker: IBOC
- cik: 0000315709
- company_name: INTERNATIONAL BANCSHARES CORP
- filed_at: 2026-10-06T12:08:02+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 3.01, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/315709/000110465926113899/0001104659-26-113899-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/315709/000110465926113899/tm2627039d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-113899
- JSON: https://secwatch.observer/filing/0001104659-26-113899.json
- Plain text: https://secwatch.observer/filing/0001104659-26-113899.txt

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