On March 24, 2021, Thompson concluded his collegiate career after his junior season and signed his first professional deal and immediately was added to the Devils roster on a two-year, entry-level contract.

[1] On April 6, Thompson made his professional and NHL debut, playing against his brother Tage, to register his first career assist and point in a 5–3 loss to the Buffalo Sabres.

He did not play any NHL games in the 2023–24 season, during which he was traded to the New York Islanders on November 26, 2023, in exchange for Arnaud Durandeau.

His father is former NHL player Brent Thompson, who serves as an assistant coach for the Anaheim Ducks.

This biographical article relating to an American ice hockey center is a stub.