Leonhard Nossol is on the board of German Pulp & Paper Association and Group Controller-European Region at Mercer International, Inc., Managing Director at Rosenthal Holdings Ltd., Member of Bundesverband der Deutschen Industrie e.V. and Managing Director at Rosenthal Mill.

In the past Leonhard Nossol occupied the position of Operations Controller at GRUNDIG AG.

He received an undergraduate degree from Freie Universität Berlin and an undergraduate degree from Hochschule für Technik und Wirtschaft Berlin.