Belgian science and chemicals major Syensqo has announced the appointment of three senior leaders to its Executive Leadership Team (ELT), signalling a major step in its leadership evolution under CEO Mike Radossich, who assumed the role in January 2026. 

 

The moves aim to accelerate growth and reinforce a high-performance culture across the organisation.

 

Kerstin Artenberg joins as Chief People Officer, bringing extensive international experience across industrial and technology-driven sectors. “Her leadership style emphasizes accountability, collaboration and customer centricity,” the company said, noting that she will play a key role in embedding Syensqo’s high-performance culture throughout the organization. 

 

Artenberg has a proven track record in operational excellence, transformation, and performance management, having led global teams with a combination of strategic vision and disciplined execution.

 

Arnaud Valenduc takes on the role of President of Syensqo’s Specialty Polymers Business Unit. He brings deep expertise in strategy, business development, and transformation in the chemicals industry. 

 

Since 2022, Valenduc has served as Business Director at INEOS Inovyn and as a member of its Executive Committee and Board. Between 2003 and 2022, he held multiple senior leadership roles at Solvay, including Head of Transformation, CEO of Solvay Indupa (Argentina/Brazil), and Regional Business Manager in Asia, driving performance improvements and strategic growth. 

 

“His deep financial and commercial acumen, customer-led focus, transformation expertise and international business experience will support faster progress within Specialty Polymers,” Syensqo said, highlighting that his ELT appointment will reinforce group-wide alignment on customer centricity, technology development, and accelerated decision-making.

 

Arnaud Wisnia joins as Chief Strategy & Transformation Officer, bringing a wealth of experience in strategy, innovation, and transformation in the chemicals and advanced materials sectors. 

 

Since 2022, he has served as VP & Managing Director, President Performance Minerals at Minerals Technologies, leading a global specialty materials business focused on customer-led innovation and operational excellence. Earlier in his career, Wisnia held senior executive roles at Solvay, as well as leadership positions at Danaher and McKinsey. 

 

“His background in corporate development, business turnaround, lean manufacturing, supply chain and strategic transformation will further strengthen Syensqo’s focus on operational rigor, strategic and technology driven growth as well as end-to-end value chain performance,” the company said.