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10-K - 10-K - INTERNATIONAL BANCSHARES CORPa2196658z10-k.htm
EX-13 - EX-13 - INTERNATIONAL BANCSHARES CORPa2196658zex-13.htm
EX-23 - EX-23 - INTERNATIONAL BANCSHARES CORPa2196658zex-23.htm
EX-31.B - EX-31.B - INTERNATIONAL BANCSHARES CORPa2196658zex-31_b.htm
EX-99.B - EX-99.B - INTERNATIONAL BANCSHARES CORPa2196658zex-99_b.htm
EX-31.A - EX-31.A - INTERNATIONAL BANCSHARES CORPa2196658zex-31_a.htm
EX-32.B - EX-32.B - INTERNATIONAL BANCSHARES CORPa2196658zex-32_b.htm
EX-99.A - EX-99.A - INTERNATIONAL BANCSHARES CORPa2196658zex-99_a.htm
EX-32.A - EX-32.A - INTERNATIONAL BANCSHARES CORPa2196658zex-32_a.htm

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Exhibit 21


List of Subsidiaries

Subsidiaries of International Bancshares Corporation

Name
  State of Incorporation
or Organization
  Business   % of Ownership  

IBC Subsidiary Corporation

    Delaware   Bank Holding Company     100 %

IBC Life Insurance Company

    Texas   Credit Life Insurance     100 %

IBC Trading Company

    Texas   Export Trading     100 %

IBC Capital Corporation

    Texas   Investments     100 %

Premier Tierra Holdings, Inc. 

    Texas   Liquidating Subsidiary     100 %

Subsidiaries of IBC Subsidiary Corporation

Name
  State of Incorporation
or Organization
  Business   % of Ownership  

International Bank of Commerce

    Texas   State Bank     100 %

Commerce Bank

    Texas   State Bank     100 %

International Bank of Commerce, Zapata

    Texas   State Bank     100 %

International Bank of Commerce, Brownsville

    Texas   State Bank     100 %

Gulfstar Merchant Banking I, Ltd. 

    Texas   Investment and Merchant Banking     70 %

Gulfstar Merchant Banking II, Ltd. 

    Texas   Investment Banking     70 %

Gulfstar Merchant Banking III, Ltd. 

    Texas   Merchant Banking     70 %



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List of Subsidiaries