International Bancshares Corporation (IBOC) has 20 known insider and institutional holders on record. The largest holder is NIXON DENNIS E with 965,185 shares. Other notable holders include SANCHEZ ANTONIO R JR and NAVARRO IMELDA.
Over the last 12 months, insiders have made 5 transactions in IBOC stock — 1 buys (valued at $23.6K) and 2 sells (valued at $8.31M). Insider selling has exceeded buying during this period.
IBOC Insider Ownership
Top Holder
NIXON DENNIS E
965,185 shares
Buys (12 mo)
1
$23.6K value
Sells (12 mo)
2
$8.31M value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Nixon Dennis E |
CEO |
965,185 |
2024-11-14 |
|
| 2 |
Sanchez Antonio R Jr |
10 Percent Owner |
487,439 |
2025-08-15 |
|
| 3 |
Navarro Imelda |
Director |
186,162 |
2015-11-13 |
|
| 4 |
Hastings Daniel B Jr |
Director |
174,184 |
2011-12-02 |
|
| 5 |
Norton Larry A |
Director |
135,761 |
2012-12-12 |
|
| 6 |
Neiman Sioma |
Director |
100,000 |
2010-03-08 |
|
| 7 |
Haynes Richard E |
Director |
45,760 |
2008-01-07 |
|
| 8 |
Greenblum Irving |
Director |
34,775 |
2021-01-29 |
|
| 9 |
Salinas Leonardo |
Director |
34,535 |
2015-08-18 |
|
| 10 |
Zuniga Diana G |
Director |
12,943 |
2023-04-10 |
|
| 11 |
De Anda Javier |
Director |
10,000 |
2020-03-12 |
|
| 12 |
Resendez Roberto R |
Director |
9,000 |
2019-08-16 |
|
| 13 |
Howland Douglas B |
Director |
8,303 |
2010-08-09 |
|
| 14 |
Avigael Lester |
Director |
7,559 |
2007-10-16 |
|
| 15 |
Martinez Dalia F |
Vice President |
5,000 |
2023-04-10 |
|
| 16 |
Miles Rudolph |
Director |
3,573 |
2020-03-12 |
|
| 17 |
Wawroski Judith I |
Treasurer/pao |
3,400 |
2025-09-09 |
|
| 18 |
Trevino Guillermo F. |
Director |
3,000 |
2010-03-18 |
|
| 19 |
Guerra R David |
Vice President |
2,500 |
2017-06-16 |
|
| 20 |
Newman Peggy J |
Director |
852 |
2010-06-18 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-02-06 |
Wawroski Judith I |
Treasurer/pao |
Option Exercise (Sell) |
300 |
$16.84 |
$5.05K |
| 2025-09-05 |
Wawroski Judith I |
Treasurer/pao |
Option Exercise |
600 |
$39.33 |
$23.6K |
| 2025-08-15 |
Sanchez Antonio R Jr |
10 Percent Owner |
Informative Sell |
40,000 |
$68.12 |
$2.72M |
| 2025-08-14 |
Sanchez Antonio R Jr |
10 Percent Owner |
Informative Sell |
80,000 |
$69.83 |
$5.59M |
| 2025-06-05 |
Wawroski Judith I |
Treasurer/pao |
Option Exercise (Sell) |
300 |
$16.84 |
$5.05K |
