Gather the ingredients.

Stir soy sauce, brown sugar, water, green onions, garlic, and sesame oil together in a bowl until sugar has dissolved.

Place ribs in a large resealable plastic bag; pour in marinade, squeeze out excess air, and seal the bag. Marinate in the refrigerator for 3 hours.

Preheat an outdoor grill for medium-high heat; lightly oil the grate. Remove ribs from the bag; shake off excess marinade and discard marinade. Grill ribs on the preheated grill until meat is still pink but not bloody nearest the bone, 5 to 7 minutes per side.