Bastian learned the carpentry trade, studied architecture, economics, law and urban development and received a scholarship. After graduating, he worked as an independent planner in project development and initiated cross-university research on urban development — including a stay in India of several months. At the same time, he established his first company investments and founded PRIO, which bundled previous projects and companies. Additional qualifications in the areas of open and closed investment funds and investment structures expanded his professional depth in structuring investments. Further training on the supervisory board deepened his knowledge of compliance, risk management and strategic corporate governance. He is a member of Atlantik-Brücke e. V., serves on the advisory board of the Patriotic Society from 1765, and is a member of the Friends of the Hochschule für bildende Künste Hamburg e. V.

Steffen is an ESCP business graduate (Paris, Oxford, Berlin) and real estate economist (EBS) with long-standing experience in complex real estate investing. Early roles included group controlling at Hilti and institutional asset management at ECE, one of Europe’s leading real estate groups. He later led the family's residential investment platform, accountable for acquisitions, development and portfolio operations. Certified as a Residential Neighbourhood Developer (VNW), he connects execution with urban policy and social impact perspectives, strengthened by executive training in family office positioning at the University of Lucerne. He completed board-level training in corporate governance at the Board Academy of the Institute for Corporate Governance in the German Real Estate Industry (ICG) and most recently added AI continuing education at ESMT Berlin. Steffen is a member of Atlantik-Brücke e. V. and serves on the PHINEO gAG Advisory Board.