IBOC · NASDAQ · Banks - Regional

International Bancshares

Texas and Oklahoma banking franchise serving local businesses, consumers, and cross-border trade.

$70.93
After-hours close+0.01 (+0.01%)
At close$70.92(+0.44%)

Breakdown13F · Form 4

Institutions 79.72%49.57M sharesInsiders 3.82%2.38M sharesOther 16.46%10.23M shares

Shares outstanding 62.18M · Float 56.16M · 90.3% free float

Top shareholders13F · 13D/G · Form 4

HolderShares% outstandingFormFiled
BlackRock, Inc.7.05M11.33%13FAug 7, 2026
Vanguard Portfolio Management LLC3.35M5.39%13FAug 13, 2026
Dimensional Fund Advisors LP3.26M5.24%13FAug 11, 2026
American Century Companies Inc3.13M5.03%13FAug 12, 2026
State Street Corp2.81M4.52%13FAug 7, 2026

Institutions13F, as of Jun 30, 2026

300 holders · 49.57M shares · 39 new positions · 164 increased · 86 reduced · 32 closed

HolderShares% outstandingChg q/qFiled
BlackRock, Inc.7.05M11.33%+403.1KAug 7, 2026
Vanguard Portfolio Management LLC3.35M5.39%−51.4KAug 13, 2026
Dimensional Fund Advisors LP3.26M5.24%+71.8KAug 11, 2026
American Century Companies Inc3.13M5.03%−100.2KAug 12, 2026
State Street Corp2.81M4.52%+185.9KAug 7, 2026
Vanguard Capital Management LLC2.50M4.01%+21.4KAug 13, 2026
Geode Capital Management, LLC1.57M2.53%+82.5KAug 12, 2026
Boston Trust Walden Corp1.31M2.10%+218.9KJul 24, 2026

Beneficial owners13D/G · 5% or more, as filed

Holder% of classSharesFormFiled
Vanguard Portfolio Management5.51%3.43M13GApr 29, 2026
American Century Investment Management, Inc.5.20%3.20M13GFeb 13, 2026
Dimensional Fund Advisors LP5.20%3.21M13GOct 9, 2025

InsidersForm 4

InsiderRoleShares% outstandingFiled
Antonio R. Jr Sanchezdirector, 10 percent owner: 2.25M3.62%Aug 15, 2025
Larry A. Nortondirector111.9K0.18%May 22, 2026
Judith I. Wawroskiofficer: TREASURER/PAO12.0K0.02%Feb 10, 2026

14 people have not refiled in the last 18 months (1.48M shares), so they are not in the figure above

Latest trades

DateInsiderTypeSharesAvg priceOwned after
May 21, 2026
Larry A. Nortondirector
Sale10,000$72.00111,917

CongressHouse and Senate disclosures

Not reported.