Ydeon Management


Dr. Sebastian Arendt (CEO)

Sebastian has been CEO at GartenHaus since 2019. Before joining GartenHaus, the Düsseldorf native gained extensive experience in home and garden retail. After years at the Boston Consulting Group and a member of the retail practice, he joined one of Europe’s leading home improvement retailers, OBI, where he held various positions ranging from supply chain management and marketing to digital and X-channel activities. As commercial director, Sebastian helped build the transformation unit OBI Next. He holds a PhD in Entrepreneurship from RWTH Aachen University.

Ydeon Management Arendt

Sönke-Timo Kisker (CFO)

Sönke managed the IPO of the leading European online tourism portal Trivago in 2016 after working for the auditors Deloitte and the Hamburg-based finance startup Savings United. Afterwards, the Lüneburg native took over the financial management of the global leading deal platform pepper.com better known as myDealz before returning to the north and joining GartenHaus in 2021.  Sönke holds a Bachelor’s degree from Maastricht University and an MBA from the Otto Beisheim School of Management.

Ydeon Management Kisker

GartenHaus GmbH

Dr. Lucas W. Heilmann (COO)

Lucas has been COO at GartenHaus since 2021. Before that he gained in-depth knowledge in value stream operations of XL and bulky consumer products by supporting to set-up a B2B and D2C distribution network with digitized end-to-end logistic processes at one of Europe’s leading high scaled volume kitchen manufacturers. Lucas started his management experience as an assistant to the CEO of an international high-tech niche company group with various responsibilities in corporate development, supply chain management and leading operational excellence functions at different entities within the group. Lucas holds a PhD in Sales Management and B2B Marketing from the WHU – Otto Beisheim School of Management and a Diploma in Industrial Engineering from RWTH Aachen University with international management experience.


Oscar Troedson

Oscar Troedson has been the CEO at Polhus since the end of 2017, when he, his brother and a couple of other investors bought the company from the founders. Oscar and his team successfully transformed Polhus from being a local B2B player into becoming a successful e-commerce company with a vast geographical presence. Prior to his engagement in Polhus Oscar has a history of founding and running several companies, often in the sphere of e-commerce and digitalization. 

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Outdoor Toys

James King

James graduated from The Liverpool Blue Coat School in 2007 and holds a degree in E-Commerce Computing from the University of Liverpool. He started his career in Web Development and Digital Marketing and has several years of experience in Sales, Business Development and Digital Marketing in Retail, Media and E-Commerce. In 2015, James joined PlumbNation, where he held several senior-level leadership roles and served as General Manager and Managing Director for multiple years. In 2023, James joined OutdoorToys UK (Rebo UK) and OutdoorToys International as Managing Director. In this role, James is responsible for the overall performance and growth of OutdoorToys, both in its home market UK and internationally.

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