Cochran-Siegle took the 2015 season off to recover from a lateral meniscus transplant, then returned in the 2016 season, when he made his World Cup giant slalom debut, and took his first World Cup point in GS with a 30th place at Kranjska Gora. He finished the season with good results at the national championships at Sun Valley, Idaho, where he was runner-up in the super-G and giant slalom and fourth in the combined. In 2018, Cochran-Siegle was a member of the U.S. Olympic team and competed in four events, his best result was eleventh in the giant slalom.