Mark Sidler joins TOPIC as Commercial Director

Wednesday 11 February 2026

We are pleased to announce the appointment of Mark Sidler as TOPIC’s new Commercial Director as of February 1st. In this role, he will lead the sales team and drive TOPIC’s growth ambitions for the coming years. Mark brings extensive leadership experience, deep market knowledge and a strong collaborative mindset to further build on our ambitions.

In addition to his new responsibilities, Mark will also take on the role of Managing Director a.i.. This temporary assignment follows the leave of absence of Ronald van Gerwen, who is stepping back for an indefinite period due to personal circumstances.

We are confident that with his experience, drive and enthusiasm Mark will ensure TOPIC’s continuity and growth, both in his role as Commercial Director and as Managing Director a.i..

Mark: “I’m confident that together with the experience in the TOPIC’s Management Team, we’ll drive the further growth of our company. ”

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