Soba Noodles with Glazed Salmon

Name: Soba Noodles with Glazed Salmon
Ingredients: 1/4 cup plus 2 tablespoons low-sodium soy sauce; 1/4 cup fresh orange juice; 1/4 cup balsamic vinegar; 1/4 cup honey; 1/2 teaspoon red pepper flakes; 2 bunches scallions (2 scallions sliced, the rest chopped); 2 heads baby bok choy, trimmed and roughly chopped; 1/4 cup toasted sesame oil; Kosher salt and freshly ground pepper; 2 tablespoons minced pickled ginger, plus 1 tablespoon liquid; 1 9-ounce package soba noodles; 1 1/4 pounds center-cut salmon fillet, cut into 4 pieces