He then attended Northville High School, alongside Team USA teammate Matt Boldy, where he graduated summa cum laude.On February 15, 2023, Thrun, during his final year at Harvard, notified the Anaheim Ducks that he intended to test free agency rather than sign with them when his rights expired in August 2023.[15][16] At the conclusion of his junior season with the Crimson, Thrun was signed by the Sharks to a two-year, entry-level contract on March 25, 2023, and joined the team immediately.After the conclusion of the Sharks' season, Thrun returned to Harvard to finish his bachelor's degree as a double major in economics and pyschology.[22][23] He also represented the United States at the 2021 World Junior Ice Hockey Championships where he recorded one assist, and a plus-6 rating in seven games and won a gold medal.