Middleton sits on the boards of directors for AB&T and the Flint RiverQuarium. He previously sat on the boards of directors for the Albany Area Chamber of Commerce and the First Tee of Albany. Middleton is a former member of the young executive board of Regions Bank in Albany and the boards of trustees for Leadership Georgia, the Albany Museum of Art and the Lily Pad SANE Center.

He is a member of the Rotary Club of Dougherty County. Middleton is a graduate of Leadership Georgia and Leadership Albany. He earned a bachelor’s degree from Emory University and a law degree from Georgia State University College of Law. Middleton and his wife, Kari, have two children and reside in Albany.

Mr. Middleton was appointed to the GSFC Board of Commissioners in March 2010. He was reappointed in November 2018 and May 2024. His term expires May 2030.