Rub steak with 1 tbsp chopped parsley, 1 tsp each chopped rosemary and thyme, and the salt and pepper. Grill steak on medium-high 4 minutes per side for medium-rare. Cut tomatoes in half horizontally and grill 6 minutes with steak, turning once. Heat butter; add 1 tbsp chopped parsley and 1 tsp each chopped rosemary and thyme. Cook 1 minute. Stir in Worcestershire sauce. Coarsely chop grilled tomato; combine with farro. Serve with steak and sauce.