Medbase, the healthcare group owned by Migros, said on 18 August that it had acquired a majority stake in Ardentis, a dental clinic group in western Switzerland, from Columna Capital.
Why Medbase Group is buying Ardentis (majority stake)
Medbase wants to expand its dental business in French-speaking Switzerland, alongside its existing Zahnarztzentrum.ch chain. Chief executive Marcel Napierala said the group regards dentistry as an important part of primary health care. Ardentis will remain operationally independent.
“We view dentistry as an important part of primary health care.”
Deal terms and financing
Financial terms were not disclosed. Ardentis management reinvested and keeps a significant minority stake, and co-chief executives Mark Bischof and Yves Corthésy remain in place. The deal closed on 14 August.
Regulatory approvals and timing
The transaction completed on 14 August 2026, before it was announced.
Market context
Under Columna's ownership since December 2019, Ardentis grew from 12 to 20 locations and from 77 to 149 dental chairs. Medbase runs about 190 medical centres, psychotherapy practices, pharmacies and dental centres and has been wholly owned by the Migros-Genossenschafts-Bund since 1 April.
