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International Bancshares Corporation Financials, FR Y-9C Data and Filings

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Bank Holding Company Texas RSSD 1104231 Ticker IBOC FRS Est. 1980

International Bancshares Corporation is a bank holding company based in Texas with $17.02B in total consolidated assets as of June 30, 2026, according to its FR Y-9C filing with the Federal Reserve. It owns 5 banks that file a call report, the largest being International Bank of Commerce ($9.80B in assets). Its shares trade under the ticker IBOC, and it files with the SEC under CIK 315709: see its SEC filings and 8-K events.

Key Financials FR Y-9C, consolidated, as of June 30, 2026

Total assets
$17.02B
Total deposits
$12.74B
Total equity
$3.38B
Net income (Q2 2026)
$95.8M
ROA
2.21%
ROE
11.50%
Net interest margin
4.40%
CET1 ratio
23.56%
Total loans
$9.86B
Efficiency ratio
38.50%
Equity / assets
19.83%
Tier 1 leverage ratio
20.27%
Total capital ratio
25.30%
Employees (FTE)
2,226

Source: FR Y-9C for June 30, 2026, consolidated across the holding company's banks and nonbank subsidiaries. Net income is for Q2 2026 alone; ROA, ROE and net interest margin annualize that quarter, and the margin is tax-equivalent, on average earning assets. Deposits add domestic and foreign-office deposits (Schedule HC, item 13). Capital ratios are as filed on Schedule HC-R (CET1: BHCAP793). Bank-level figures in the tables below come from each bank's own call report.

Bank Subsidiaries 5 banks held directly or through another holding company

Bank Charter State Total assets (call report) Share of bank assets Held through
International Bank of Commerce State Non-Member Bank TX $9.80B 56.6% Held directly
International Bank of Commerce State Non-Member Bank TX $4.57B 26.4% Held directly
International Bank of Commerce State Non-Member Bank OK $1.63B 9.4% Held directly
Commerce Bank State Non-Member Bank TX $749.1M 4.3% Held directly
International Bank of Commerce State Non-Member Bank TX $563.3M 3.3% Held directly

Watch International Bank of Commerce: get an email when it files its next call report. Free account, no card.

Questions About International Bancshares Corporation

What are International Bancshares Corporation's total assets?

International Bancshares Corporation reported $17.02B in total consolidated assets as of June 30, 2026, according to its FR Y-9C filing with the Federal Reserve.

How many banks does International Bancshares Corporation own?

International Bancshares Corporation owns 5 banks that file a call report: International Bank of Commerce, International Bank of Commerce, International Bank of Commerce, and 2 others.

Who owns International Bank of Commerce?

International Bank of Commerce is owned by International Bancshares Corporation. The bank reported $9.80B in total assets on its latest call report.

Where can I find International Bancshares Corporation's FR Y-9C?

International Bancshares Corporation files the FR Y-9C with the Federal Reserve every quarter. The reports are public on the FFIEC National Information Center under RSSD ID 1104231. This page summarizes the FR Y-9C for Q2 2026.

Does International Bancshares Corporation file with the SEC?

Yes. International Bancshares Corporation files with the SEC under Central Index Key (CIK) 315709 and trades under the ticker IBOC.

Filing Details fiscal year and SEC registration

Fiscal year end
December 31
Ticker
IBOC
SEC CIK
315709

Organization Map select + to expand a subsidiary's own holdings

Holding company Reporting bank Nonbank subsidiary
  • International Bancshares Corporation
    Holding Company TX RSSD 1104231
    $17.02B
    • State Non-Member Bank TX RSSD 1001152
      $9.80B
    • State Non-Member Bank TX RSSD 230759
      $4.57B
    • State Non-Member Bank OK RSSD 5050028
      $1.63B
    • State Non-Member Bank TX RSSD 625159
      $749.1M
    • State Non-Member Bank TX RSSD 382069
      $563.3M
    • Diamond Beach Holdings, LLC
      Nonbank Subsidiary TX RSSD 4566577
    • Emerald Galveston Holdings LLC
      Nonbank Subsidiary TX RSSD 4171346
    • Nonbank Subsidiary TX RSSD 2961730
    • Gulfstar Group II, LTD
      Nonbank Subsidiary TX RSSD 3030839
    • Gulfstar Group I, LTD
      Nonbank Subsidiary TX RSSD 2961749
    • Gulfstar Merchant Banking II, Ltd.
      Nonbank Subsidiary TX RSSD 3416527
    • Gulfstar Merchant Banking IV, LTD
      Nonbank Subsidiary TX RSSD 4566399
    • International Bancshares Capital Trust IX
      Nonbank Subsidiary TX RSSD 3451733
    • International Bancshares Capital Trust X
      Nonbank Subsidiary TX RSSD 3601499
    • International Bancshares Capital Trust XI
      Nonbank Subsidiary TX RSSD 3599729
    • International Bancshares Capital Trust XII
      Nonbank Subsidiary TX RSSD 3605769
    • Premier Tierra Holdings, Inc.
      Nonbank Subsidiary TX RSSD 3844326
    • Prime NGL, LLC
      Nonbank Subsidiary TX RSSD 5752322
    • RH Lakeway Development GP, LLC
      Nonbank Subsidiary TX RSSD 5530221
    • RH Lakeway Development, Ltd.
      Nonbank Subsidiary TX RSSD 5530230
    • RH Lakeway Holdings GP, LLC
      Nonbank Subsidiary TX RSSD 5530212
    • RH Lakeway Holdings, LTD
      Nonbank Subsidiary TX RSSD 5530203
    • WCMH, LLC
      Nonbank Subsidiary TX RSSD 6028538

Direct Subsidiaries 23 active direct subsidiaries

Entity Type State Total Assets Share of bank subsidiary assets
International Bank of Commerce · 1001152 State Non-Member Bank TX $9.80B 56.6%
International Bank of Commerce · 230759 State Non-Member Bank TX $4.57B 26.4%
International Bank of Commerce · 5050028 State Non-Member Bank OK $1.63B 9.4%
Commerce Bank · 625159 State Non-Member Bank TX $749.1M 4.3%
International Bank of Commerce · 382069 State Non-Member Bank TX $563.3M 3.3%
Diamond Beach Holdings, LLC · 4566577 Nonbank Subsidiary TX — —
Emerald Galveston Holdings LLC · 4171346 Nonbank Subsidiary TX — —
Gulfstar Group GP, L.L.C. · 2961730 Nonbank Subsidiary TX — —
Gulfstar Group II, LTD · 3030839 Nonbank Subsidiary TX — —
Gulfstar Group I, LTD · 2961749 Nonbank Subsidiary TX — —
Gulfstar Merchant Banking II, Ltd. · 3416527 Nonbank Subsidiary TX — —
Gulfstar Merchant Banking IV, LTD · 4566399 Nonbank Subsidiary TX — —
International Bancshares Capital Trust IX · 3451733 Nonbank Subsidiary TX — —
International Bancshares Capital Trust X · 3601499 Nonbank Subsidiary TX — —
International Bancshares Capital Trust XI · 3599729 Nonbank Subsidiary TX — —
International Bancshares Capital Trust XII · 3605769 Nonbank Subsidiary TX — —
Premier Tierra Holdings, Inc. · 3844326 Nonbank Subsidiary TX — —
Prime NGL, LLC · 5752322 Nonbank Subsidiary TX — —
RH Lakeway Development GP, LLC · 5530221 Nonbank Subsidiary TX — —
RH Lakeway Development, Ltd. · 5530230 Nonbank Subsidiary TX — —
RH Lakeway Holdings GP, LLC · 5530212 Nonbank Subsidiary TX — —
RH Lakeway Holdings, LTD · 5530203 Nonbank Subsidiary TX — —
WCMH, LLC · 6028538 Nonbank Subsidiary TX — —

Share of bank subsidiary assets divides each bank's total assets by the combined assets of the bank subsidiaries listed. Nonbank subsidiaries are not counted.

Regulator records: FFIEC NIC profile (RSSD 1104231)