Teresa Wilton Harmon, an attorney who has spent her career at Sidley Austin LLP, will be the next managing partner in the Chicago office, effective May 13.Harmon takes over for Anne E. Rea, leader of Sidley’s Employee Retirement Income Security Act litigation practice. Rea plans to retire in June.Rea became managing partner in Chicago in April 2017, and succeeded Larry A. Barden.Harmon is a 1994 graduate of the University …