A law degree from the Katholieke Universiteit Leuven provided the foundation for Thomas Leysen, an Antwerp-born executive whose career has spanned industrial manufacturing, financial services, and European media markets. Over several decades, he has transitioned from corporate management roles to steering the boards of multiple international organizations across the banking, technology, and publishing sectors.
Industrial Transformation at Umicore
Leysen directed the evolution of Umicore, previously known as Union Minière. He oversaw the company's shift from a traditional metals producer into a materials technology firm. Under his tenure, which lasted until 2008 as chief executive officer and subsequently as chairman, the organization established market positions in automotive catalysts, battery materials, and precious metals recycling.
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In the financial sector, Leysen served as chairman of the board for KBC Group from 2011 to 2020. Simultaneously, he expanded his influence in the media landscape as a major shareholder and chairman of Mediahuis. This publishing group maintains a footprint in Belgium, the Netherlands, Luxembourg, Germany, and Ireland, managing titles such as De Standaard, De Telegraaf, and the Irish Independent. Additionally, he became chairman of dsm-firmenich, a health and nutrition firm listed on Euronext Amsterdam, in March 2001.
Governance and Public Service
Leysen has held various leadership roles in professional organizations and policy committees. He chaired the Federation of Enterprises in Belgium between 2008 and 2011 and led the Belgian Corporate Governance Commission from 2014 until 2023. His non-profit and board engagements include the King Baudouin Foundation, the Flemish Heritage Council, and the Rubenianum Fund. He remains active with the European Council on Foreign Relations and the Bilderberg Meetings steering committee.
Fast facts
- Born: 1960, Antwerp, Belgium
- Education: Law degree, Katholieke Universiteit Leuven
- Awards: Gouden Penning (2021)
- Former CEO: Umicore
- Former Chairman: KBC Group (2011–2020)
- Current Chairman: dsm-firmenich
- Corporate Governance Commission Chair: 2014–2023
Questions readers ask
What is Thomas Leysen's current primary role?
He serves as the chairman of dsm-firmenich and is the chairman and a major shareholder of the media company Mediahuis.
Which major Belgian organization did Leysen lead during the 2010s?
Between 2011 and 2020, he was the chairman of the board for the KBC Group, a major banking and insurance provider.
Achievements
- Affiliated with KBC Group
- Educated at Katholieke Universiteit Leuven



