# Filing Detail

Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0001104659-26-020439
Filing Date
2026-02-26
Accepted
2026-02-26 15:23:29
Documents
117
Period of Report
2025-12-31

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | 10-K | iboc-20251231x10k.htm iXBRL | 10-K | 825816
2 | EX-4 | iboc-20251231xex4.htm | EX-4 | 18457
3 | EX-13 | iboc-20251231xex13.htm iXBRL | EX-13 | 6621224
4 | EX-21 | iboc-20251231xex21.htm | EX-21 | 39683
5 | EX-23 | iboc-20251231xex23.htm | EX-23 | 2138
6 | EX-31.A | iboc-20251231xex31da.htm | EX-31.A | 14081
7 | EX-31.B | iboc-20251231xex31db.htm | EX-31.B | 13875
8 | EX-32.A | iboc-20251231xex32da.htm | EX-32.A | 8175
9 | EX-32.B | iboc-20251231xex32db.htm | EX-32.B | 8174
10 | GRAPHIC | iboc-20251231xex13006.jpg | GRAPHIC | 40593
| Complete submission text file | 0001104659-26-020439.txt |  | 28659610

Data Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
11 | EX-101.SCH | iboc-20251231.xsd | EX-101.SCH | 94338
12 | EX-101.CAL | iboc-20251231_cal.xml | EX-101.CAL | 135409
13 | EX-101.DEF | iboc-20251231_def.xml | EX-101.DEF | 444978
14 | EX-101.LAB | iboc-20251231_lab.xml | EX-101.LAB | 906171
15 | EX-101.PRE | iboc-20251231_pre.xml | EX-101.PRE | 701440
120 | EXTRACTED XBRL INSTANCE DOCUMENT | iboc-20251231x10k_htm.xml | XML | 7953394

Mailing Address P O BOX 1359 1200 SAN BERNARDO LAREDO TX 78040
Business Address 12OO SAN BERNARDO AVE PO BOX 1359 LAREDO TX 78040-1359 9567227611
INTERNATIONAL BANCSHARES CORP (Filer) CIK: 0000315709 (see all company filings)

EIN.: 742157138 | State of Incorp.: TX | Fiscal Year End: 1231
Type: 10-K | Act: 34 | File No.: 000-09439 | Film No.: 26686770
SIC: 6022 State Commercial Banks
(CF Office: 02 Finance)