Trustmark Corporation announced that R. Michael Summerford has been elected to succeed Daniel A. Grafton as Chairman of the Board of Directors of the company effective January 1, 2017. Mr. Summerford succeeds Daniel A. Grafton, who plans to retire from the company’s Boards of Directors at the 2017 annual shareholders’ meeting. Mr. Summerford has been a member of Trustmark’s Board of Directors since 2005.