Koen is heading the corporate practice in Brussels. He joined Simmons & Simmons on July 1, 2026, upon retirement from another international firm after 32 years of partnership. He advises Belgian and foreign corporates, private equity funds, sovereign wealth funds and family offices on all types of corporate finance transactions, mostly crossborder. He handles private and public M&A and capital markets transactions as well as corporate restructurings. He has a wealth of experience in deal making across different sectors and industries from financial institutions, energy and utilities to food and industrials.
He is regarded by commentators as "one of the leading M&A lawyers in Belgium" (Chambers). Koen is "sought after for his cross-border capabilities in the corporate and capital markets fields". Clients have also said, "In negotiations, he is excellent when assessing complex situations and helping to set the strategy", "Looking for high-level, sensitive board-level advice, Koen is on my shortlist" and " Koen is a tough negotiator but excellent dealmaker, always a pleasure to have him on your side". He was elevated to the Hall of Fame of Legal 500 (PE, M&A and Commercial).
Notable deals include (public) M&A and private equity transactions involving Resilux, Vandemoortele, Straco PE, Telenet, Gimv, SFPIM and KeBeK.
He was also assistant company law and teaching assistant private equity law at KULeuven.
Koen graduated from KULeuven with a Law Degree, magna cum laude, and with a Bachelor’s Degree in Philosophy. He also attended the LL.MM program at the University of California, Berkeley School of Law as BAEF Fellow.
