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Form 8-K

sec.gov
IBOC The article is a Form 8-K filing, which is a report of unscheduled material events or corporate changes. It does not contain sentiment-based information about the company's performance or outlook.

8-K — INTERNATIONAL BANCSHARES CORP

Accession: 0001104659-26-089623

Filed: 2026-08-03

Period: 2026-08-03

CIK: 0000315709

SIC: 6022 (STATE COMMERCIAL BANKS)

Item: Other Events

Item: Financial Statements and Exhibits

Documents

8-K — tm2621694d1_8k.htm (Primary)

EX-99 — EXHIBIT 99 (tm2621694d1_ex99.htm)

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C.  20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15 (d) of The

Securities Exchange Act of 1934

Date of Report (Date of earliest event reported):

August 3, 2026

INTERNATIONAL BANCSHARES CORPORATION

(Exact Name of Registrant as Specified in

its Charter)

Texas

000-09439

74-2157138

(State or other

jurisdiction

of incorporation or organization)

(Commission File Number)

(I.R.S. Employer

Identification No.)

1200 San Bernardo, Laredo, Texas

78040-1359

(Address of principal executive offices)

(ZIP Code)

(Registrant’s telephone number, including

area code)   (956) 722-7611

None

(Former name or former address, if changed

since last report)

Check the appropriate box below if the Form 8-K filing

is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General

Instruction A.2.below):

¨

Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

¨

Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

¨

Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

¨

Pre-commencement communications pursuant to Rule 13e-4 (c) under the Exchange Act (17 CFR 250.13e-4 (c))

Securities registered pursuant to Section 12(b) of

the Act:

Title of each class:

Trading Symbol

Name of each exchange on which registered:

Common Stock, $1.00 par value

IBOC

NASDAQ

Indicate by check mark whether the

registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405) or Rule 12b-2

of the Securities Exchange Act of 1934 (17 CFR §240.12b-2).

Emerging growth

company ¨

If an emerging

growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with

any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Item 8.01 Other Events.

On August 3, 2026, International Bancshares

Corporation (“IBC”) issued a news release announcing that on July 31, 2026, IBC’s board of directors approved

the declaration of a seventy-three cents per share cash dividend for shareholders of record of common stock, $1.00 par value, as of the

close of business on August 14, 2026, payable on August 28, 2026.

The news release announcing the cash dividend

attached hereto and filed herewith as Exhibit 99, is incorporated herein by reference.

All of the information furnished in Item 8.01

of this report and the accompanying exhibits is also intended to be included under “Item 7.01 — Regulation Fair Disclosure,”

shall not be deemed to be “filed” for the purposes of Section 18 of the Securities and Exchange Act of 1934, as amended,

is not subject to the liabilities of that section and shall not be incorporated by reference in any filing under the Securities Act of

1933, as amended.

Item 9.01 Financial Statements and Exhibits.

99

News

Release of International Bancshares Corporation dated August 3, 2026, entitled, “International Bancshares Corporation Announces

Cash Dividend.”

104

Cover page Interactive Data File (embedded within the Inline XBRL document)

2

SIGNATURES

Pursuant to the requirements of the Securities

Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

INTERNATIONAL BANCSHARES CORPORATION

(Registrant)

By:

/s/ Dennis E. Nixon

Dennis E. Nixon, President and Chairman of the Board

August 3, 2026

3

EX-99 — EXHIBIT 99

EX-99

Filename: tm2621694d1_ex99.htm · Sequence: 2

EXHIBIT 99

Contact: Judith Wawroski

Treasurer and Chief Financial Officer

International Bancshares Corporation

(956) 722-7611 (Laredo)

FOR IMMEDIATE RELEASE

INTERNATIONAL BANCSHARES CORPORATION

ANNOUNCES CASH DIVIDEND

Laredo,

Texas — (BUSINESS WIRE) — August 3, 2026 — International Bancshares Corporation (NASDAQ: IBOC) (“IBC”)

announced today that its board of directors approved the declaration of a $0.73 per share cash dividend for shareholders of record

of common stock, $1.00 par value, as of the close of business on August 14, 2026, payable on August 28, 2026.

“This discretionary cash dividend reflects

our sustained financial strength, which is reinforced by our solid capital position, significant liquidity and 60 years of positive earnings.

We remain committed to continuing to manage IBC responsibly, positioning us for enduring success and enhancing value for our shareholders,”

said Dennis E. Nixon, IBC’s president and chairman of the board.

IBC is a multi-bank financial holding company

headquartered in Laredo, Texas, with over $16.8 billion in total assets and 165 facilities and 247 ATMs serving 75 communities in Texas

and Oklahoma.

“Safe Harbor” statement under the

Private Securities Litigation Reform Act of 1995: The statements contained in this release which are not historical facts contain forward-looking

information with respect to plans, projections or future performance of IBC and its subsidiaries, the occurrence of which involve certain

risks and uncertainties detailed in IBC’s filings with the Securities and Exchange Commission.

Copies of IBC’s SEC filings and Annual Report

(as an exhibit to the 10-K) may be downloaded from the SEC filings site located at http://www.sec.gov/edgar.shtml or IBC’s website

at http://www.ibc.com.

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