International Bancshares Corp (IBOC) Insider Ownership

Historic Insider Ownership Trends

International Bancshares's three largest insider shareholders as of April 11, 2026 are Antonio R Jr Sanchez (Director, 1.81Mn shares), Dennis E Nixon (Ceo, 1.40Mn shares), Antonio R Jr Sanchez (Director, 1.23Mn shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Antonio R Jr Sanchez - 1,805,554 9,000 19 Dec, 2024
Dennis E Nixon Ceo 0 1,400,000 16 Sep, 2021
Antonio R Jr Sanchez - 0 1,232,245 22 May, 2024
Dennis E Nixon Ceo 658,336 283,564 28 Feb, 2022
Dennis E Nixon Ceo 0 900,000 14 Nov, 2024
Dennis E Nixon Ceo 648,382 0 09 Feb, 2023
Antonio R Jr Sanchez - 0 447,439 14 Aug, 2025
Dennis E Nixon Ceo 0 284,371 01 Sep, 2022
Judith I Wawroski Treasurer/Pao 12,347 0 10 Feb, 2026
Dalia F Martinez Vice President 8,845 0 25 Jan, 2024
Judith I Wawroski Treasurer/Pao 8,722 0 18 Feb, 2022

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
06 Feb, 2026 Judith I Wawroski Common Stock A 875 $38.30 12,047 D M
06 Feb, 2026 Judith I Wawroski Common Stock A 300 $16.84 12,347 D M
06 Feb, 2026 Judith I Wawroski EMPLOYEE STOCK OPTION (RIGHT TO BUY) D 875 $0.00 0 D M
06 Feb, 2026 Judith I Wawroski EMPLOYEE STOCK OPTION (RIGHT TO BUY) D 300 $0.00 0 D M
05 Sep, 2025 Judith I Wawroski Common Stock A 600 $39.33 11,772 D M
05 Sep, 2025 Judith I Wawroski Common Stock D 600 $71.58 11,172 D D
05 Sep, 2025 Judith I Wawroski STOCK APPRECIATION RIGHTS A 600 $71.58 3,400 D M
14 Aug, 2025 Antonio R Jr Sanchez Common Stock D 80,000 $69.83 487,439 I S
15 Aug, 2025 Antonio R Jr Sanchez Common Stock D 40,000 $68.12 447,439 I S
05 Jun, 2025 Judith I Wawroski Common Stock A 700 $38.30 10,872 D M
05 Jun, 2025 Judith I Wawroski Common Stock A 300 $16.84 11,172 D M
05 Jun, 2025 Judith I Wawroski EMPLOYEE STOCK OPTION (RIGHT TO BUY) D 700 $0.00 0 D M
05 Jun, 2025 Judith I Wawroski EMPLOYEE STOCK OPTION (RIGHT TO BUY) D 300 $0.00 0 D M
17 Dec, 2024 Antonio R Jr Sanchez Common Stock D 9,000 $0.00 1,805,554 D G
17 Dec, 2024 Antonio R Jr Sanchez Common Stock A 9,000 $0.00 9,000 I G
12 Nov, 2024 Dennis E Nixon Common Stock D 34,815 $72.18 965,185 I S
13 Nov, 2024 Dennis E Nixon Common Stock D 65,185 $71.47 900,000 I S
13 Aug, 2024 Judith I Wawroski Common Stock A 500 $38.30 10,172 D M
13 Aug, 2024 Judith I Wawroski EMPLOYEE STOCK OPTION (RIGHT TO BUY) D 500 $0.00 0 D M
21 May, 2024 Antonio R Jr Sanchez Common Stock D 30,112 $59.75 1,282,133 I S