🕵️ International Bancshares Corp ($IBOC)
SEC insider & ownership activity, last 12 months · CIK 315709 · every row links its SEC filing
Over the last 12 months insiders sold $9.0M with no open-market buying against it. Antonio R. Sanchez Jr. sold $8.3M in discretionary trades (Aug). No red-flag 8-Ks in the window.
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Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
0 buyers, $0 (0 lots) · 2 sellers, $9.0M (3 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Antonio R. Sanchez Jr. | 0 | – | 2 | $8.3M | Aug 15, 2025 |
| Norton Properties Ltd | 0 | – | 1 | $720K | May 21, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Vanguard Portfolio Management | 5.5% | 13G | Apr 29, 2026 | filing ↗ | |
| Dimensional Fund Advisors LP | 5.2% | 13G | Oct 9, 2025 | filing ↗ | |
| American Century Investment Management, Inc. | 5.2% | 13G | Feb 13, 2026 | filing ↗ | |
| American Century Companies, Inc. | 5.2% | 13G | Feb 13, 2026 | filing ↗ | |
| Stowers Institute for Medical Research | 5.2% | 13G | Feb 13, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Norton Properties Ltd | $720K | May 21, 2026 | filing ↗ |
| Antonio R. Sanchez Jr. | $6.6M | Nov 21, 2025 | filing ↗ |
| Antonio R. Sanchez Jr. | $8.5M | Aug 14, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Shareholder vote (5.07) | May 18, 2026 | filing ↗ |
| Charter/bylaw changes (5.03) | May 12, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 12, 2026 | filing ↗ |
| Earnings (2.02) | May 7, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 7, 2026 | filing ↗ |
| Earnings (2.02) | Feb 26, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 26, 2026 | filing ↗ |
| Other events (8.01) | Feb 2, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 2, 2026 | filing ↗ |
| Earnings (2.02) | Nov 6, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 6, 2025 | filing ↗ |
| Earnings (2.02) | Aug 7, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 7, 2025 | filing ↗ |
| Charter/bylaw changes (5.03) | Aug 6, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 6, 2025 | filing ↗ |
| Other events (8.01) | Aug 1, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 1, 2025 | filing ↗ |