He is the son of the retired ice hockey player Ove Thörnberg.

[1] He also played briefly in the Kontinental Hockey League with Lokomotiv and HC Lev Praha, joining Lokomotiv after Lev Praha announced they would not continue in the KHL due to financial bankruptcy, on July 2, 2014.

[2] Thörnberg announced his retirement after the 2021–22 season, ending his career as HV71's sixth all-time leading scorer.

[3] It was later announced that Thörnberg's jersey number 10 would be retired by the franchise on 5 January 2023.

This biographical article relating to a Swedish ice hockey winger is a stub.