$IBOC

$66.67 -$0.11 (0.16%) Close

$IBOC Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 62.2M shares outstanding

Who owns IBOC?

By type of holder

Institutions 71.1% Insiders 28.9% Everyone else 0.0%

Concentration Top 10 holders own 115.3%

Sanchez Antonio R JR 70.2% · BlackRock, Inc. 11.3%

Institutional ownership

71.1%

+2.1 pts vs last qtr

Institutional holders

299

+5 vs last qtr

Net shares bought

+1.3M

by institutions in Q2 2026

New / sold out

37 / 32

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Norges Bank NEW +700.4K
BlackRock, Inc. +403.1K

Biggest sellers in Q2 2026

Azora Capital LP −426.9K
First Trust Advisors LP −316.7K

Who is planning to sell?

Notices of proposed sale, last 12 months

$7.36M

2 notices from 2 people

Shares covered

110.0K

0.18% of the company

Arranged in advance

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Sanchez Antonio R JR Director $6.64M
Norton Properties LTD Board member $720K

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2016–FY2025

−6.1%

−0.70% a year

Each share's claim on the business

+6.5%

grew without buying or selling a share

Spent on buybacks vs paid in stock

$157M vs $6.35M

over 10 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years83% 3–5 years3% 1–3 years9% Under 1 year5%

Quarterly turnover

7.6%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting IBOC on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	7.0M	11.33%	+403.1K (+6.1%)	≤2021	0.0%
Shares held by quarter Peak holding7.0M (Q2'26) Change over 8 quarters+238.6K Share of the company11.330% BlackRock, Inc.'s full portfolio →
VP Vanguard Portfolio Management LLC	3.4M	5.39%	−51.4K (−1.5%)	≤2021	0.0%
Shares held by quarter Peak holding3.4M (Q1'26) Change over 8 quarters+3.4M Share of the company5.390% Vanguard Portfolio Management LLC's full portfolio →

BlackRock, Inc.

7.0M

% of company

11.33%

Change vs last qtr

+403.1K (+6.1%)

Held since

≤2021

Vanguard Portfolio Management LLC

3.4M

% of company

5.39%

Change vs last qtr

−51.4K (−1.5%)

Held since

≤2021

28 more super investors behind a free account

See every manager holding International Bancshares Corp, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting IBOC on Form N-PORT; together they hold 42.6% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
IC iShares Core S&P Mid-Cap ETF iShares Trust	$140M	1.8M	2.97%	0.11%	June 30, 2026
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$135M	1.8M	2.86%	0.01%	June 30, 2026

iShares Core S&P Mid-Cap ETF

iShares Trust

Position value

$140M

% of company

2.97%

% of the fund

0.11%

As of

June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$135M

% of company

2.86%

% of the fund

0.01%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding International Bancshares Corp and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
SA Sanchez Antonio R JR Insider	43.6M	70.16%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company70.160% Sanchez Antonio R JR's insider activity →
ND Nixon Dennis E Insider	3.5M	5.70%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company5.700% Nixon Dennis E's insider activity →

Sanchez Antonio R JR

Insider

43.6M

% of company

70.16%

Change vs last qtr

—

Held since

—

Nixon Dennis E

Insider

3.5M

% of company

5.70%

Change vs last qtr

—

Held since

—

2 more holders behind a free account

See every insider and 5%+ holder of International Bancshares Corp.

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