Deal announcement: OnO Holding SA
Thierry Thormann

July 2026
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Altenburger advised OnO Holding SA, one of Switzerland's leading ophthalmology groups with more than 30 years of experience, in the acquisition of Ambulante Augen-Operations AAO AG and three ophthalmology practices.
Altenburger’s team was led by Thierry Thormann and further included Ralph Imoberdorf, Céline Spahn and Isabelle Meyer.
