Mathis Trettenes has agreed to a one-year contract extension. The 27-year-old Norwegian is currently in his first season with the Swiss League team. In 33 games, he has recorded 13 goals and 26 assists.
Stefan Ulmer, for his part, has signed a two-year contract with the Bees. The defenseman has already played for HCC this season on a conditioning stint. In seven regular-season games, the EHC Biel defender has recorded one goal and four assists for HCC.
U20 defenseman Kai Wyss will stay with HCC for at least one season. The 20-year-old defender is a product of EHC Biel's organization and has played 17 games for HCC this season via B-license (two assists).