Trustmark Corporation is a bank holding company headquartered in Jackson, Mississippi.

The bank serves Mississippi, Alabama, the Florida Panhandle, Memphis, and Houston.

[1] The bank traces its roots to The Jackson Bank, which was chartered by the State of Mississippi in December 1889 with cash capital of $100,000.

[6] In 2022, the company sold its corporate trust business.

[7] In 2024, the company sold Fisher Brown Bottrell Insurance to Marsh McLennan for $345 million.