International Bancshares Corp (IBOC) Insider Ownership

Historic Insider Ownership Trends

Data spanning the past 90 days through February 19, 2026 reveals that International Bancshares's three principal insider shareholders consist of Director Antonio R Jr Sanchez (3.04Mn shares), Ceo Dennis E Nixon (932.75K shares), Treasurer/Pao Judith I Wawroski (12.35K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares Report Date
Antonio R Jr Sanchez 3,037,799 15 Aug, 2025
Dennis E Nixon Ceo 932,753 14 Nov, 2024
Judith I Wawroski Treasurer/Pao 12,347 10 Feb, 2026
Dalia F Martinez Vice President 10,814 25 Jan, 2024

* 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 300 $16.84 12,347 D M
06 Feb, 2026 Judith I Wawroski Common Stock A 875 $38.30 12,047 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
15 Aug, 2025 Antonio R Jr Sanchez Common Stock D 40,000 $68.12 1,232,245 I S
15 Aug, 2025 Antonio R Jr Sanchez - - 1,232,245 I
14 Aug, 2025 Antonio R Jr Sanchez - - 1,805,554 D
14 Aug, 2025 Antonio R Jr Sanchez Common Stock D 80,000 $69.83 1,805,554 D 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
17 Dec, 2024 Antonio R Jr Sanchez Common Stock A 9,000 $0.00 9,000 I G
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 - - 9,000 I
17 Dec, 2024 Antonio R Jr Sanchez - - 1,805,554 D
13 Nov, 2024 Dennis E Nixon Common Stock D 65,185 $71.47 284,371 I S
13 Nov, 2024 Dennis E Nixon - - 284,371 I
12 Nov, 2024 Dennis E Nixon Common Stock D 34,815 $72.18 648,382 D S
12 Nov, 2024 Dennis E Nixon - - 648,382 D
13 Aug, 2024 Judith I Wawroski - - 10,172 D
13 Aug, 2024 Judith I Wawroski Common Stock A 500 $38.30 10,172 D M