 He is married to Erin Barrett Horowitz.Horowitz, Kitsis and the "Lost" writing staff won the Writers Guild of America (WGA) Award for Best Dramatic Series at the February 2006 ceremony for their work on the first and second seasons.They were nominated for the WGA Award for Best Dramatic Series again at the February 2007 ceremony for their work on the second and third seasons, at the February 2009 ceremony for the fourth season of "Lost" and at the February 2010 ceremony for the fifth season.