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Nasdaq · CIK 0000315709

IBOC INTERNATIONAL BANCSHARES CORP

Insider trading from SEC Form 4. Last filing May 22, 2026. Close $67.78 on Oct 12, 2026, +9% from the 52-week low and -12% from the high.

In brief

INTERNATIONAL BANCSHARES CORP (IBOC) has 10 SEC Form 4 filings on file from 4 insiders, the latest filed on May 22, 2026. No insider bought or sold on the open market in the last 90 days; rows filed in that time are grants, exercises, tax withholding and other transactions that carry no view on the price.

6 open-market trades have been scored at IBOC. The newest: Larry A Norton (director) sold $720k of stock on May 21, 2026, filed May 22, 2026, scored 36 (weak). The largest of the 6 shown: Antonio R Sanchez Jr (director and 10% owner) sold $8.3M on Aug 14, 2025, scored 45 (moderate).

8 Form 144 notices of planned sales are on file, the latest filed May 21, 2026.

Last 90 days

Net insider value
$0
no open-market trades
Buys
0
$0 by 0 insiders
Sells
0
$0 by 0 insiders
Insiders on file
4
with a Form 4 at this company

Price and insider trades, last year

IBOCOct 12, 2026 · close 67.78

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™

Signals

Open-market buys and sells at INTERNATIONAL BANCSHARES CORP, scored.

ScoreInsiderValueHoldingsPrice contextFiled
36WeakLarry A Norton
director
sell
$720k
10,000 shares
-8%+19% from low-3% from high
45ModerateAntonio R Sanchez Jr
director, owner
sell
$8.3M
120,000 shares
-21%+25% from low-5% from high
55ModerateDennis E Nixon
CEO
sell
$7.2M
100,000 shares
-10%-
45ModerateAntonio R Sanchez Jr
director, owner
sell
$7.3M
150,000 shares
-22%+24% from low0% from high
40ModerateAntonio R Sanchez Jr
director, owner
sell
$2.7M
60,000 shares
-4%+13% from low-13% from high
40ModerateAntonio R Sanchez Jr
director, owner
sell
$2.8M
60,000 shares
-4%+18% from low-8% from high

Planned sales

Form 144 notices filed before a sale of restricted or control stock, newest first. The sale itself usually reaches a Form 4 within days. All planned sales

FiledSellerSharesValueSale datePast 3 months
May 21, 2026 Norton Properties LTD
Board Member
10,000
0.02% of outstanding
$720kMay 21, 2026none
Nov 21, 2025 SANCHEZ ANTONIO R JR
Director
100,000
0.16% of outstanding
$6.6MNov 21, 2025none
Aug 14, 2025 SANCHEZ ANTONIO R JR
Director, 10% Stockholder
120,000
0.19% of outstanding
$8.5MAug 14, 2025none
Nov 14, 2024 DENNIS NIXON
Director, President and Chief Executive Officer
100,000
0.16% of outstanding
$7.2MNov 12, 2024none
Mar 11, 2024 SANCHEZ ANTONIO R JR
Director, 10% Stockholder
40,000
0.06% of outstanding
$2.2MMar 11, 2024none
Dec 7, 2023 SANCHEZ ANTONIO R JR
Director, 10% Stockholder
150,000
0.24% of outstanding
$7.3MDec 7, 2023none
Nov 21, 2023 SANCHEZ ANTONIO R JR
Director, 10% Stockholder
60,000
0.10% of outstanding
$2.7MNov 21, 2023$2.8M
Nov 14, 2023 SANCHEZ ANTONIO R JR
Insider
60,000
0.10% of outstanding
$2.6MNov 14, 2023none

Transactions

Every row filed, 26 in all.

DateInsiderTransactionSharesPriceValueHoldings afterFiled
May 21, 2026Larry A Norton
director
SOpen-market sale
Common Stockindirect: Held in partnership
-10,000$72.00$720k111,917May 22, 2026
Feb 6, 2026Judith I Wawroski
TREASURER/PAO
MOption exercise
Common Stock
+875$38.30$34k12,047Feb 10, 2026
Feb 6, 2026Judith I Wawroski
TREASURER/PAO
MOption exercise
Common Stock
+300$16.84$5,05212,347Feb 10, 2026
Feb 6, 2026Judith I Wawroski
TREASURER/PAO
MOption exercise
EMPLOYEE STOCK OPTION (RIGHT TO BUY)derivative
-875$0.00$00Feb 10, 2026
Feb 6, 2026Judith I Wawroski
TREASURER/PAO
MOption exercise
EMPLOYEE STOCK OPTION (RIGHT TO BUY)derivative
-300$0.00$00Feb 10, 2026
Sep 5, 2025Judith I Wawroski
TREASURER/PAO
MOption exercise
Common Stock
+600$39.33$24k11,772Sep 9, 2025
Sep 5, 2025Judith I Wawroski
TREASURER/PAO
DDisposition to issuer
Common Stock
-600$71.58$43k11,172Sep 9, 2025
Sep 5, 2025Judith I Wawroski
TREASURER/PAO
MOption exercise
STOCK APPRECIATION RIGHTSderivative
+600$71.58$43k3,400Sep 9, 2025
Aug 14, 2025Antonio R Sanchez Jr
director, owner
SOpen-market sale
Common Stockindirect: Held in Partnership
-80,000$69.83$5.6M487,439Aug 15, 2025
Aug 15, 2025Antonio R Sanchez Jr
director, owner
SOpen-market sale
Common Stockindirect: Held in Partnership
-40,000$68.12$2.7M447,439Aug 15, 2025
Jun 5, 2025Judith I Wawroski
TREASURER/PAO
MOption exercise
Common Stock
+700$38.30$27k10,872Jun 6, 2025
Jun 5, 2025Judith I Wawroski
TREASURER/PAO
MOption exercise
Common Stock
+300$16.84$5,05211,172Jun 6, 2025
Jun 5, 2025Judith I Wawroski
TREASURER/PAO
MOption exercise
EMPLOYEE STOCK OPTION (RIGHT TO BUY)derivative
-700$0.00$00Jun 6, 2025
Jun 5, 2025Judith I Wawroski
TREASURER/PAO
MOption exercise
EMPLOYEE STOCK OPTION (RIGHT TO BUY)derivative
-300$0.00$00Jun 6, 2025
Dec 17, 2024Antonio R Sanchez Jr
director, owner
GGift
Common Stock
-9,000$0.00$01,805,554Dec 19, 2024
Dec 17, 2024Antonio R Sanchez Jr
director, owner
GGift
Common Stockindirect: Held by Grandchildren's Trusts
+9,000$0.00$09,000Dec 19, 2024
Nov 12, 2024Dennis E Nixon
CEO
SOpen-market sale
Common Stockindirect: Held by Partnership
-34,815$72.18$2.5M965,185Nov 14, 2024
Nov 13, 2024Dennis E Nixon
CEO
SOpen-market sale
Common Stockindirect: Held by Partnership
-65,185$71.47$4.7M900,000Nov 14, 2024
Dec 7, 2023Antonio R Sanchez Jr
director, owner
SOpen-market sale
Common Stockindirect: Held in Partnership
-50,000$49.06$2.5M617,439Dec 11, 2023
Dec 8, 2023Antonio R Sanchez Jr
director, owner
SOpen-market sale
Common Stockindirect: Held in Partnership
-50,000$48.86$2.4M567,439Dec 11, 2023
Dec 7, 2023Antonio R Sanchez Jr
director, owner
SOpen-market sale
Common Stock
-25,000$49.06$1.2M1,839,554Dec 11, 2023
Dec 8, 2023Antonio R Sanchez Jr
director, owner
SOpen-market sale
Common Stock
-25,000$48.86$1.2M1,814,554Dec 11, 2023
Nov 27, 2023Antonio R Sanchez Jr
director, owner
SOpen-market sale
Common Stockindirect: Held in Trust
-45,000$44.79$2.0M1,367,245Nov 29, 2023
Nov 28, 2023Antonio R Sanchez Jr
director, owner
SOpen-market sale
Common Stockindirect: Held in Trust
-15,000$44.63$669k1,352,245Nov 29, 2023
Nov 15, 2023Antonio R Sanchez Jr
director, owner
SOpen-market sale
Common Stockindirect: Held in Trust
-30,000$47.77$1.4M1,442,245Nov 17, 2023
Nov 16, 2023Antonio R Sanchez Jr
director, owner
SOpen-market sale
Common Stockindirect: Held in Trust
-30,000$46.62$1.4M1,412,245Nov 17, 2023

Insiders

Everyone who has filed a Form 4 here.

Questions about IBOC

Answered from the filings on this page, as of the latest one.

Are insiders buying IBOC?

No. In the last 90 days no insider at INTERNATIONAL BANCSHARES CORP bought or sold shares on the open market according to SEC Form 4 filings. The rows on file from that period are grants, exercises, tax withholding or other transactions, which carry no view on the price.

Who was the last insider to trade IBOC on the open market?

Larry A Norton (director) sold $720k of IBOC on May 21, 2026 and filed the Form 4 on May 22, 2026. InsiderTell scored 36 (weak).

How many insiders file Form 4 at INTERNATIONAL BANCSHARES CORP?

4 people have filed a Form 4 at INTERNATIONAL BANCSHARES CORP, among them Dennis E Nixon (CEO), Larry A Norton (director), Antonio R Sanchez Jr (director and 10% owner). Officers, directors and holders of more than 10% of a share class must report their trades within two business days.

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

IBOC insider trading: INTERNATIONAL BANCSHARES CORP | InsiderTell