Home>About Us>Management

Client-centric Leadership and Expertise

CABB Group’s Executive Committee possesses unique professional experience: understanding customer partnerships, fine chemical expertise, corporate and small-company perspectives, and a track record of delivering growth.

Valerie Diele-Braun
Valerie Diele-BraunCEO
Valerie Diele-Braun has led the CABB Group as CEO since 2018. She has extensive experience in growth and transformation projects, in previous assignments at DSM, Givaudan and as a member of the board of Swiss chemical producer Archroma.
Markus Schürholz
Markus SchürholzCFO
Markus joined CABB as its CFO in 2019. He held management positions in finance departments of international companies including Haniel Group, Escada AG and SAG Group over the past 25 years. Most recently, Markus was CFO of Landgard eG.
Tobias Schalow
Tobias SchalowCOO
Tobias joined CABB in 2018 as head of the Program Management Office and has been nominated COO in 2020. Previously, Tobias contributed to strategic transformation programs in the chemical industry at Linde and Booz & Company, among others.

Site Leadership

Urs Zimmerli
Urs ZimmerliPratteln Site Manager
New to CABB in 2020, Urs spent the last 20 years leading operations and management teams in the fine and specialty chemical businesses of EMS, Archroma, Polygal and Borregaard.
Ari Venninen
Ari VenninenKokkola, Managing Director
Ari joined CABB in March 2021. He brings 20 years of industry experience to his new Kokkola assignment, most recently with leadership positions at Kraton Chemical and Sun Chemical.
Andree Henze
Andree HenzeGersthofen, Site Manager
Andree has led the Gersthofen site since 2016 after a lengthy career in plant operations at Clariant and Hoechst.
Wolfgang Schick
Wolfgang SchickKnapsack, Site Manager
Wolfgang joined CABB in 2009 and is currently responsible for Acetyl’s global production network and as Managing Director for CABB GmbH. He has 3 decades of experience in large scale production, with previous assignments at Hoechst and Clariant.
Jeff Black
Jeff BlackJayhawk, President and Site Manager
Jeff has been part of Jayhawk’s team since 1989, serving in a variety of production and project assignments in the US and Europe, prior to his present role leading the Jayhawk site for CABB.
Benjamin Hong
Benjamin HongJinwei, General Manager CABB China
Benjamin joined CABB in 2019. His career in the chemical industry spans 20 years and includes assignments in technical, commercial and management roles with Mitsubishi, Chevron Phillips and AkzoNobel.