IBC Bank was founded in 1966 and today it serves as the flagship bank of International Bancshares Corporation. Since its open ... ing, IBC has grown in assets to more than $11 billion making it one of Texas’ largest holding companies. We believe in doing more for the communities we serve. And we've made that commitment for the last 50+ years. We know that when our communities succeed, we all succeed. Affirmative Action/ Equal Opportunity Employer Member FDIC/ International Bancshares Corporation read more