Like fellow former EHC Olten player Cédric Maurer, he will suit up for the Red Lions Reinach next season: "The talks were very sympathetic and collegial. I liked the tenacity and the project that was pointed out to me."
Mosimann appeared in 41 regular-season games for EHC Olten last season, recording three assists. He added four goals and two assists in 13 playoff games to his tally.