Vigier Holding AG, Walo Bertschinger Holding Ag and H 2 M Participations SA signed an agreement to acquire 66% stake of Gravière de La Claie-aux-Moines S.A. from Implenia AG (SWX:IMPN) on December 18, 2021. The transaction was closed on December 22, 2021. The transaction has no impact on GCM SA employees. Vigier Holding AG, Walo Bertschinger Holding Ag and H 2 M Participations SA completed the acquisition of 66% stake of Gravière de La Claie-aux-Moines S.A. from Implenia AG (SWX:IMPN) on December 22, 2021.