On arrival, "Stockton" joined the Seventh Fleet forces assembled for the invasion of Los Negros Island in the Admiralties. She participated in the initial bombardment that cleared the way for the landings on 29 February and remained in the area for three days, patrolling and giving fire support to the forces ashore. From 9 to 13 March, she supported similar but smaller landings in Seeadler Harbor. As American forces leapfrogged along the northern coast of New Guinea, "Stockton" acted as an antiaircraft and antisubmarine screening vessel during the landings in Humboldt Bay on 22 April and at Wakde on 17 May; and she provided gunfire support for the Biak landings on 27 May. While off Biak, she received minor damage when hit by a shell from a shore battery on 28 May, and on 12 June, she towed into Humboldt Bay, after that destroyer had been immobilized by a bomb hit amidships.