According to recent filings covering the 90 days ending December 31, 2025, the three most significant insider holders at International Bancshares are Director Antonio R Jr Sanchez (3.04Mn shares), Treasurer/Pao Judith I Wawroski (11.17K shares), Vice President Dalia F Martinez (10.81K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Antonio R Jr Sanchez | 3,037,799 | 15 Aug, 2025 | |
| Dennis E Nixon | Ceo | 932,753 | 14 Nov, 2024 |
| Irving Greenblum | 59,137 | 29 Jan, 2021 | |
| Judith I Wawroski | Treasurer/Pao | 11,172 | 09 Sep, 2025 |
| 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.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 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 |
| 14 Aug, 2025 | Antonio R Jr Sanchez | Common Stock | D | 80,000 | $69.83 | 1,805,554 | D | S |
| 15 Aug, 2025 | Antonio R Jr Sanchez | Common Stock | D | 40,000 | $68.12 | 1,232,245 | 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 |
| 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 | - | - | 1,805,554 | D | |||
| 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 | - | - | 9,000 | 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 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 | |||
| 13 Aug, 2024 | Judith I Wawroski | Common Stock | A | 500 | $38.30 | 10,172 | D | M |
| 13 Aug, 2024 | Judith I Wawroski | - | - | 10,172 | D | |||
| 21 May, 2024 | Antonio R Jr Sanchez | Common Stock | D | 30,112 | $59.75 | 1,814,554 | D | S |
| 21 May, 2024 | Antonio R Jr Sanchez | - | - | 1,814,554 | D | |||
| 22 May, 2024 | Antonio R Jr Sanchez | Common Stock | D | 49,888 | $58.39 | 567,439 | I | S |
| 22 May, 2024 | Antonio R Jr Sanchez | - | - | 567,439 | I |