• Medbase, part of Migros Group, bought Columna Capital’s majority stake in Ardentis, a dental clinic operator in French-speaking Switzerland.
• The transaction closed on Aug. 14; financial terms were not disclosed.
• Medbase becomes majority owner; Ardentis management reinvested to keep a significant minority stake.
• Ardentis operates 20 clinics, employs 450 people, serves about 70,000 patients a year.
• Columna invested in December 2019; Ardentis completed 15 openings or acquisitions during the holding period.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Columna Capital LLP published the original content used to generate this news brief on August 19, 2026, and is solely responsible for the information contained therein.