1. Combine the first 3 ingredients in a large bowl.
2. Heat a large skillet over medium heat. Add 2 tablespoons oil to pan; swirl to coat. Add rosemary, pepper, and garlic to pan; cook 2 minutes or until garlic is tender, stirring constantly. Increase heat to medium-high. Add shrimp to pan; sauté for 6 minutes or until shrimp are done. Remove shrimp mixture from pan. Add remaining 1 tablespoon oil and vinegar to pan; cook for 15 seconds. Drizzle warm vinegar mixture over arugula mixture; toss gently to coat. Divide arugula mixture among 4 plates; top with shrimp. Serve immediately.