The organization released a statement in which Tangnes explained his decision: "My family returned to Sweden two years ago, and I want to be closer to my wife and 14-year-old daughter again."
During his seven-year stay in Zug, the 45-year-old Norwegian won the cup once and the National League championship twice, back-to-back in 2021 and 2022.
The organization's team manager Reto Kläy admitted his surprise but accepted the choice. He further emphasized that they will be patient in the search for a successor: "We want to find someone who shares our values and supports our long-term concept."