The EQT Mid Market Europe Fund acquires a majority stake in Open Systems AG from its current private owners who will remain invested.

Open Systems was founded in 1990. Since then the company grew consistently sustainable and transitioned from a security integrator into one of the largest Security as a Service providers in Europe. Open Systems is headquartered in Zurich and active in more than 180 countries.

Walder Wyss AG has advised EQT Mid Market Europe as Swiss legal advisor in this transaction. The team was led by Urs P. Gnos (Partner, Corporate/M&A) and included Thomas Meister (Partner, Tax), Lukas Wyss (Partner, Finance), Fabienne Anner (Associate, Corporate/M&A), Samuel Lieberherr (Associate, Corporate/M&A), Jenny Süess (Associate, Corporate/M&A), Janine Corti (Counsel, Tax), David Vasella (Counsel, IPIT), Jacqueline Sievers (Associate, IPIT), Gaurav Bhagwanani (Associate, Employment), Daniel Zimmerli, (managing associate, Competition) as well as Christine Glättli (Managing Associate, Corporate/Notary Public).