Apparel manufacturer Kellwood Co on Monday named John Henderson president of its sportswear brand Sag Harbor. The St Louis-based company said Henderson is a 31-year retail and apparel veteran and most recently served as executive vice president for Sag Harbor Its brands include Sag Harbor, Sag Harbor Sport, and an extensive line of licensing agreements for handbags, footwear, outerwear, eyewear, and belt programs.