Lone Star Funds, a Dallas-based PE firm, is selling a portion of its stake in steakhouse operator Del Frisco's Restaurant Group (NASDAQ: DFRG) through a secondary offering. Based in Southlake, TX, the restaurant group owns and operates three restaurant concepts: Del Frisco's Double Eagle Steak House, Sullivan's Steakhouse and Del Frisco's Grille, with 34 restaurants currently operating in 19 states and Washington, D.C. Lone Star's offering of 4.75 million shares will whittle its stake down from 75.6% to 55.7%. Lone Star acquired Del Frisco's in 2006 and took it public in July 2012.