Preheat a cast-iron grill pan or outdoor grill to 450 degrees Fahrenheit.
Pat steak dry and season both sides with salt and pepper; coat corn lightly with olive oil.
Sear steak for 4-6 minutes per side until internal temperature reaches 130 degrees Fahrenheit for medium-rare.
Char corn simultaneously for 8-10 minutes, rotating every 2 minutes for even caramelization.
Transfer steak to a cutting board and rest for 10 minutes before slicing against the grain into 0.25 inch strips.
Shear corn kernels from the cob using a chef knife.
In a separate vessel, whisk balsamic vinegar, honey, Dijon, and garlic while slowly streaming in olive oil to form a stable emulsion.
Toss salad greens, tomatoes, and red onion with 2 tablespoons of the emulsion in a chilled bowl.
Plate the dressed greens, top with sliced steak and corn, and finish with gorgonzola crumbles and remaining dressing.