International Bancshares's top three insider shareholders as of September 29, 2026 are Antonio R Jr Sanchez (Director, 1.81Mn shares), Antonio R Jr Sanchez (Director, 1.23Mn shares), Dennis E Nixon (Ceo, 941.90K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Dennis E Nixon | Ceo | 658,336 | 1,183,564 | 1,841,900 | 75.8% | 14 Nov, 2024 |
| 2 | Antonio R Jr Sanchez | Director, TenPercentOwner | 0 | 447,439 | 447,439 | 18.4% | 14 Aug, 2025 |
| 3 | Larry A Norton | Director | 0 | 111,917 | 111,917 | 4.6% | 22 May, 2026 |
| 4 | Judith I Wawroski | Treasurer/Pao | 21,069 | 0 | 21,069 | 0.9% | 10 Feb, 2026 |
| 5 | Dalia F Martinez | Vice President | 8,845 | 0 | 8,845 | 0.4% | 25 Jan, 2024 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 21 May, 2026 | Larry A Norton | Director | Disposed S | 10,000 | $72.00 | $720.00K | 111,917 | Indirect |
| 06 Feb, 2026 | Judith I Wawroski | Treasurer/Pao | Acquired M | 875 | $38.30 | $33.51K | 12,047 | Direct |
| 06 Feb, 2026 | Judith I Wawroski | Treasurer/Pao | Acquired M | 300 | $16.84 | $5.05K | 12,347 | Direct |
| 06 Feb, 2026 | Judith I Wawroski | Treasurer/Pao | Disposed M | 875 | $0.00 | $0 | 0 | Direct |
| 06 Feb, 2026 | Judith I Wawroski | Treasurer/Pao | Disposed M | 300 | $0.00 | $0 | 0 | Direct |
| 05 Sep, 2025 | Judith I Wawroski | Treasurer/Pao | Acquired M | 600 | $39.33 | $23.60K | 11,772 | Direct |
| 05 Sep, 2025 | Judith I Wawroski | Treasurer/Pao | Disposed D | 600 | $71.58 | $42.95K | 11,172 | Direct |
| 05 Sep, 2025 | Judith I Wawroski | Treasurer/Pao | Acquired M | 600 | $71.58 | $42.95K | 3,400 | Direct |
| 14 Aug, 2025 | Antonio R Jr Sanchez | Director, TenPercentOwner | Disposed S | 80,000 | $69.83 | $5.59Mn | 487,439 | Indirect |
| 15 Aug, 2025 | Antonio R Jr Sanchez | Director, TenPercentOwner | Disposed S | 40,000 | $68.12 | $2.72Mn | 447,439 | Indirect |
| 05 Jun, 2025 | Judith I Wawroski | Treasurer/Pao | Acquired M | 700 | $38.30 | $26.81K | 10,872 | Direct |
| 05 Jun, 2025 | Judith I Wawroski | Treasurer/Pao | Acquired M | 300 | $16.84 | $5.05K | 11,172 | Direct |
| 05 Jun, 2025 | Judith I Wawroski | Treasurer/Pao | Disposed M | 700 | $0.00 | $0 | 0 | Direct |
| 05 Jun, 2025 | Judith I Wawroski | Treasurer/Pao | Disposed M | 300 | $0.00 | $0 | 0 | Direct |
| 17 Dec, 2024 | Antonio R Jr Sanchez | Director, TenPercentOwner | Disposed G | 9,000 | $0.00 | $0 | 1,805,554 | Direct |
| 17 Dec, 2024 | Antonio R Jr Sanchez | Director, TenPercentOwner | Acquired G | 9,000 | $0.00 | $0 | 9,000 | Indirect |
| 12 Nov, 2024 | Dennis E Nixon | Ceo | Disposed S | 34,815 | $72.18 | $2.51Mn | 965,185 | Indirect |
| 13 Nov, 2024 | Dennis E Nixon | Ceo | Disposed S | 65,185 | $71.47 | $4.66Mn | 900,000 | Indirect |
| 13 Aug, 2024 | Judith I Wawroski | Treasurer/Pao | Acquired M | 500 | $38.30 | $19.15K | 10,172 | Direct |
| 13 Aug, 2024 | Judith I Wawroski | Treasurer/Pao | Disposed M | 500 | $0.00 | $0 | 0 | Direct |