Tossed Green Salad with Tuna and Parmigiano-Reggiano

1 can (80 g) CLOVER LEAF® Flaked Light Tuna in Olive Oil or Flaked Light Tuna in Olive Oil & Chili Pepper
4 tsp reserved olive oil from tuna can
4 cups (1 L) baby arugula
1 cup (250 mL) torn radicchio
4 endive leaves, torn into bite-size pieces
2 tbsp (30 mL) balsamic vinegar
1 tbsp (15 mL) minced shallot
1 tsp (5 mL) Dijon mustard
1/4 tsp (1 mL) pepper
2 tbsp (30 mL) shaved Parmesan cheese