KNOXVILLE, TENN. — Southeastern Development Associates has signed Regal Entertainment Group to a lease that relocates its world corporate headquarters to downtown Knoxville. The company is the world’s largest theater chain with nearly 7,500 screens. Regal will occupy a nine-story, 178,000-square-foot office building located on the Tennessee River in Southeastern Development’s One Riverwalk mixed-use development. Upon completion, One Riverwalk will feature 300 luxury apartment communities, student housing, office space, a hotel, retail shopping, restaurants, a riverwalk esplanade, parks and an entertainment plaza. Regal is expected to bring approximately 400 employees with the relocation. Southeastern Development Associates, formerly known as Blanchard & Calhoun Commercial, partnered with Tennessee Governor Bill Haslam, the city of Knoxville, Knoxville Mayor Tim Burchett and the Tennessee Valley Authority. Tommy Saul, Rhodes Seeger and Chris Senn represented Southeastern Development Associates internally in the transaction.