Celebrini, who had two goals and two assists, tied the game 3-3 at 18:21 of the third period. Celebrini took a pass at the top of the left face-off circle, and his wrist shot beat Anaheim goalie Lukas Dostal over the glove.
Wennberg put San Jose up 4-3 at 19:29 after Celebrini found him in the high slot. His wrist shot beat Dostal over the glove.
Will Smith had a goal and two assists for the Sharks (35-31-7), who have won three straight. Yaroslav Askarov made 28 saves.
Alex Killorn, Troy Terry, and Ryan Poehling scored for the Ducks (41-29-5), who have lost three straight (0-2-1). Drew Helleson had two assists, and Dostal made 16 saves.
Smith put the Sharks ahead 1-0 with a power play goal at 4:37 of the first period. Celebrini walked into the zone on the left wing, wrapped behind the net, then found Smith at the top of the left face-off circle for a one-timer.
Poehling tied the game 1-1 at 17:47. After slipping a hip check on the right boards, Poehling skated into the low slot, and his wrist shot went over Askarov’s blocker.
Killorn put the Ducks in front 2-1 at 14:59 of the second period. Helleson walked the blue line to the right point, then hit Killorn on the left post with a seam pass for a tap-in.
Celebrini tied the game 2-2 for the Sharks 27 seconds into the third period. Smith found Celebrini with a pass from the right face-off circle to the slot, and his one-timer beat Dostal’s blocker.
Terry put the Ducks ahead 3-2 at 4:04. Dmitry Orlov tried to make a pass to the middle of the ice, but Terry intercepted the puck, and after his initial shot was stopped, Terry put the rebound in from the bottom of the right face-off circle.
