SEC Form 4 · Updated Daily
IBOC
— INTERNATIONAL BANCSHARES CORPORATION OwnershipInsider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.
Current Reporting Owners
| Owner | Role | Shares Owned | As Of | Last Activity |
|---|---|---|---|---|
| SANCHEZ ANTONIO R JR | 10%+ Owner · Director | 1,207,245 | 2026-10-21 | J |
| NIXON DENNIS E | Director · Officer | 965,185 | 2024-11-12 | S |
| AVIGAEL LESTER | Director | 406,621 | 2007-06-08 | A |
| NAVARRO IMELDA | Director · Officer | 191,997 | 2017-03-01 | M |
| HASTINGS DANIEL B JR | Director | 174,184 | 2011-12-02 | P |
| Norton Larry A | Director | 111,917 | 2026-05-21 | S |
| GREENBLUM IRVING | Director | 67,000 | 2020-12-31 | G |
| HAYNES RICHARD E | Director | 45,760 | 2007-12-31 | G |
| SALINAS LEONARDO | Director | 34,535 | 2015-08-17 | P |
| DE ANDA JAVIER | Director | 18,874 | 2020-03-10 | P |
| NEWMAN PEGGY J | Director | 15,848 | 2010-08-20 | J |
| ZUNIGA DIANA G | Director | 13,003 | 2023-02-24 | P |
| WAWROSKI JUDITH I | Officer | 12,347 | 2026-02-06 | M |
| MARTINEZ DALIA F | Officer | 10,814 | 2024-01-23 | M |
| RESENDEZ ROBERTO R | Director | 9,000 | 2019-08-14 | P |
| Howland Douglas B | Director | 8,303 | 2010-08-09 | — |
| TARVIN JULIE L | Officer | 5,853 | 2017-12-27 | — |
| MILES RUDOLPH | Director | 3,939 | 2020-03-11 | P |
| Trevino Guillermo F. | Director | 3,000 | 2010-03-09 | — |
| GUERRA R DAVID | Officer | 0 | 2017-09-15 | S |
| NEIMAN SIOMA | Director | 0 | 2010-03-05 | S |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-10-21 | SANCHEZ ANTONIO R JR | J | 25,000 | $0.00 | 1,207,245 |
| 2026-05-21 | Norton Larry A | Open-market sale | 10,000 | $72.00 | 111,917 |
| 2026-02-06 | WAWROSKI JUDITH I | Option exercise (derivative) | 875 | $0.00 | 0 |
| 2026-02-06 | WAWROSKI JUDITH I | Option exercise | 300 | $16.84 | 12,347 |
| 2026-02-06 | WAWROSKI JUDITH I | Option exercise | 875 | $38.30 | 12,047 |
| 2025-09-05 | WAWROSKI JUDITH I | Option exercise (derivative) | 600 | $71.58 | 3,400 |
| 2025-09-05 | WAWROSKI JUDITH I | Disposition to issuer | 600 | $71.58 | 11,172 |
| 2025-09-05 | WAWROSKI JUDITH I | Option exercise | 600 | $39.33 | 11,772 |
| 2025-08-15 | SANCHEZ ANTONIO R JR | Open-market sale | 40,000 | $68.12 | 447,439 |
| 2025-08-14 | SANCHEZ ANTONIO R JR | Open-market sale | 80,000 | $69.83 | 487,439 |
| 2025-06-05 | WAWROSKI JUDITH I | Option exercise (derivative) | 700 | $0.00 | 0 |
| 2025-06-05 | WAWROSKI JUDITH I | Option exercise | 300 | $16.84 | 11,172 |
| 2025-06-05 | WAWROSKI JUDITH I | Option exercise | 700 | $38.30 | 10,872 |
| 2024-12-17 | SANCHEZ ANTONIO R JR | Gift | 9,000 | $0.00 | 9,000 |
| 2024-12-17 | SANCHEZ ANTONIO R JR | Gift | 9,000 | $0.00 | 1,805,554 |
| 2024-11-13 | NIXON DENNIS E | Open-market sale | 65,185 | $71.47 | 900,000 |
| 2024-11-12 | NIXON DENNIS E | Open-market sale | 34,815 | $72.18 | 965,185 |
| 2024-08-13 | WAWROSKI JUDITH I | Option exercise (derivative) | 500 | $0.00 | 0 |
| 2024-08-13 | WAWROSKI JUDITH I | Option exercise | 500 | $38.30 | 10,172 |
| 2024-05-22 | SANCHEZ ANTONIO R JR | Open-market sale | 49,888 | $58.39 | 1,232,245 |
| 2024-05-21 | SANCHEZ ANTONIO R JR | Open-market sale | 30,112 | $59.75 | 1,282,133 |
| 2024-03-11 | SANCHEZ ANTONIO R JR | Open-market sale | 40,000 | $54.22 | 1,312,245 |
| 2024-01-23 | MARTINEZ DALIA F | Option exercise (derivative) | 5,000 | $0.00 | 0 |
| 2024-01-23 | MARTINEZ DALIA F | Tax withholding | 1,969 | $54.39 | 8,845 |
| 2024-01-23 | MARTINEZ DALIA F | Option exercise | 5,000 | $21.42 | 10,814 |
| 2023-12-08 | SANCHEZ ANTONIO R JR | Open-market sale | 25,000 | $48.86 | 1,814,554 |
| 2023-12-08 | SANCHEZ ANTONIO R JR | Open-market sale | 50,000 | $48.86 | 567,439 |
| 2023-12-07 | SANCHEZ ANTONIO R JR | Open-market sale | 25,000 | $49.06 | 1,839,554 |
| 2023-12-07 | SANCHEZ ANTONIO R JR | Open-market sale | 50,000 | $49.06 | 617,439 |
| 2023-11-28 | SANCHEZ ANTONIO R JR | Open-market sale | 15,000 | $44.63 | 1,352,245 |
| 2023-11-27 | SANCHEZ ANTONIO R JR | Open-market sale | 45,000 | $44.79 | 1,367,245 |
| 2023-11-16 | SANCHEZ ANTONIO R JR | Open-market sale | 30,000 | $46.62 | 1,412,245 |
| 2023-11-15 | SANCHEZ ANTONIO R JR | Open-market sale | 30,000 | $47.77 | 1,442,245 |
| 2023-10-04 | SANCHEZ ANTONIO R JR | J | 10,000 | $0.00 | 1,472,245 |
| 2023-08-07 | WAWROSKI JUDITH I | Option exercise (derivative) | 200 | $0.00 | 0 |
| 2023-08-07 | WAWROSKI JUDITH I | Option exercise | 175 | $16.84 | 9,672 |
| 2023-08-07 | WAWROSKI JUDITH I | Option exercise | 200 | $38.30 | 9,497 |
| 2023-03-15 | SANCHEZ ANTONIO R JR | J | 50,000 | $0.00 | 1,482,245 |
| 2023-02-24 | ZUNIGA DIANA G | Open-market buy | 30 | $46.70 | 13,003 |
| 2023-02-07 | NIXON DENNIS E | Gift | 5,792 | — | 648,382 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.