In a large mixing bowl, combine the ground turkey, panko, garlic, ginger, black pepper, cilantro, and 3 tablespoons teriyaki sauce. Mix just until combined and be careful not to compact the meat.
Shape into four 3/4-inch-thick patties. Place in the refrigerator for 30 minutes. Set aside some of the remaining teriyaki sauce for serving, reserving the rest for grilling.