Like Keanu Reeves, Chad Stahelski has been part of the John Wick franchise (or as it could have been known, the Scorn franchise) since the beginning. He co-directed the first movie with David Leitch, and while Leitch has gone on to direct fare like Atomic Blonde, Deadpool 2 and Hobbs Shaw, Stahelski has held the directorial reins solo for the John Wick sequels.
Article source: https://www.cinemablend.com/news/2547213/how-john-wick-4-will-borrow-from-parabellum-according-to-the-director