144 0001258447 XXXXXXXX LIVE 0000315709 INTERNATIONAL BANCSHARES CORP 000-09439 12OO SAN BERNARDO AVE PO BOX 1359 LAREDO TX 78040-1359 9567227611 DENNIS NIXON Director President and Chief Executive Officer Common Stock LPL Financial LLC

4707 Executive Dr San Diego CA 92121

100000 7172260.09 62202810 11/12/2024 Nasdaq Common Stock 09/09/2021 Transfer from Dennis E. Nixon, who originally acquired the shares from the Issuer upon the exercise of various stock options and stock dividends paid by the Issuer Dennis E Nixon N 1000000 09/09/2021 Transfer Y This Form 144 filing is being made on behalf of 3NIX Ventures Ltd., for which Nixco, L.C serves as the general partner, of which Mr. Dennis E. Nixon is the sole manager. 11/14/2024 /s/ Dennis E. Nixon