Stefan Siebert is the Chief Financial Officer of Trivium. Prior to the formation of Trivium, Stefan was also Chief Financial Officer of Ardagh Metal Packaging and previously served as Chief Financial Officer of the Metal Europe division of Ardagh Group. In 2016 he played a lead role in the Beverage Can acquisition and its transformation within Ardagh Metal Packaging. Prior to that, Stefan held a variety of finance roles in Ardagh Group, including Division Controller for the Specialties business between 2001 and 2011. Stefan joined Schmalbach-Lubeca in 1984. Stefan has a diploma in Business Administration from the University of Applied Sciences in Rendsburg, Germany. He is a graduate of IMD Business School (AEDP) and London Business School (Corporate Finance).