Trustmark Corp.'s board appointed Gerard Host chairman of the Jackson, Miss.-based company and its unit Trustmark National Bank, effective April 28, 2020, the date of the 2020 annual shareholders meeting.

Host will succeed R. Michael Summerford, who plans to retire as a board member of the company and the bank at the 2020 annual shareholders meeting.

Host will remain president of Trustmark and CEO of the company and Trustmark National Bank, but will no longer serve as president of the bank, effective Jan. 1, 2020.

Duane Dewey was appointed to serve as president of Trustmark National Bank and as a director of the company and the bank, effective Jan. 1, 2020. He will continue to serve as COO of the bank.