President WeylChem Group of Companies & Managing Director WeylChem Holding SA
With 30+ years of experience, Dr. Brunk has worked in production, strategic planning, marketing and sales. He held senior leadership positions at Bayer Chemicals, CABB Group and Saltigo before joining WeylChem in 2018.
Antti Koivisto
Managing Director WeylChem International & Head of Sales and Marketing, AI & R
Mr. Koivisto started his chemical career in the UK working for BASF where he held various sales and marketing management roles. Before joining the WeylChem Group of Companies in 2017, he led Product Management in the EMEA region at Orica.
Raoul Biskupek
Managing Director Allessa GmbH, AllessaProduktion GmbH & WeylChem Höchst GmbH
After graduation, Mr. Biskupek joined Merck KGaA as a Controller before spending 20 years at VWR in several countries and performing a variety of leadership functions including General Management roles responsible for Global Chemical Manufacturing.
Wolfgang Böhm
Managing Director Allessa GmbH, AllessaProduktion GmbH & WeylChem Höchst GmbH
Mr. Böhm began his professional career as an engineering project manager. Since then, he has held various management positions before being appointed as Managing Director of AllessaProduktion GmbH in 2014 and Managing Director of Allessa GmbH and WeylChem Höchst GmbH in 2017.
Axel Brinkmann-Hornbogen
CFO of the WeylChem-Group
Mr. Brinkmann-Hornbogen has worked as Finance Business Partner for over 25 years. In his last role at Chemviron, he was Finance Director of Europe for more than six years where he was responsible for the Finance and Accounting of nine legal entities with ten plants and served as a member of the leadership team.
Dr. Steffen Sonnenberg
Managing director of WeylChem InnoTec GmbH
With a wealth of experience in various areas of the custom manufacturing industry, including fine chemicals, nutrition, feed, and pharmaceutical ingredients, Dr. Sonnenberg has previously held leadership roles at Symrise, Bell, Sensient and Minascent.
Gilles Zuberbuhler
Managing Director WeylChem Lamotte S.A.S
Mr. Zuberbuhler has extensive experience in leading laboratories, production, controlling, commercial support and site management with companies including Hoechst and Clariant. He is also "President of France Chimie" of Picardie Champagne Ardennes.
Dr. Johannes Kanellakopoulos
Managing Director WeylChem International GmbH & Head of Sales and Marketing, CMT
Beginning his career as a laboratory manager at Bayer AG, Dr. Kanellakopoulos held various positions within the company before joining BASF SE, where he took over the position of Head of Sourcing & Contracting. Before joining WeylChem, he worked for W.R. Grace as Manager of Site Services.
Dr. Andreas Maier
Managing Director WeylChem Performance Products GmbH
Dr. Maier started his career working for Hoechst and Clariant in the fine chemicals business, which became part of WeylChem in 2007. Prior to his current position, he worked across R&D, Operations, Sales and Business Management and also leads the company's Care Chemicals Business.
Mark Matheny
Managing Director WeylChem US
With extensive experience in leadership roles, Mr. Matheny worked for Georgia-Pacific Packaging Division in several finance roles and as General Manager of a corrugated box manufacturing plant. He also spent 10 years as Vice President Strategic Planning and Analysis for Novolex.
Rafael Reiser
Managing Director WeylChem Wiesbaden GmbH
Mr. Reiser has held various operational and staff positions within AkzoNobel, ENKA and CarboTech before joining WeylChem in 2011 as CEO of WeylChem Griesheim, Frankfurt and Hoechst. In late 2013, he was promoted to CEO of Allessa to restructure and lead the company.
