Signed by Anaheim as a free agent Oct. 9, 2020, Shattenkirk spent the past three seasons with Anaheim, tallying 14-63=77 points in 212 games from 2020-23. Since his Ducks debut, he ranks second among all Anaheim skaters in appearances, fourth in assists and power play points (3-24=27), and fifth in points. Among Anaheim defensemen, he trails only Cam Fowler in points, goals, assists and games played in that span. In 2022-23, Shattenkirk recorded 4-23=27 points with 56 PIM in 75 games. He ranked second among Ducks blueliners in points, goals, assists and power play points (1-7=8), and third in time on ice per game (19:18).