He succeeds Ricarda Demarmels, who will assume the role of chief executive officer of the company on the same day.
Gerber is an experienced professional with cross-industry international experience in leadership roles, Emmi said.
He previously worked with Hero and the Swatch Group, and holds a degree in business administration as well as an International Executive MBA from the University of St Gallen, Switzerland.
Currently, he serves as the finance chief of Calida Group, a Swiss lingerie firm.
'Important New Challenge'
Gerber added, "I am extremely excited about this important new challenge at Emmi. It fills me with pride to become part of such a superbly positioned company with unique brands and products."
Urs Riedener, CEO of the Emmi Group, stated, "Sacha D Gerber's skills and values make him a great fit for Emmi and our corporate culture. He combines Swiss values with a profound wealth of international experience, and has a broad range of expertise from his activities at iconic companies operating successfully in an international context.
"In his role as CFO, he will be instrumental in successfully co-shaping the further strategic development of Emmi."
Announcing its 2022 half-year results, Emmi also confirmed its outlook for the full-year and medium-term forecast.