Hans-Rudolf Blöchlinger

Artires AG operates as a real estate company. It engages in the development, sale, and leasing of residential, office, and commercial properties. The firm also manages the group's own properties, including those of external clients. The company was founded in November 1959 and is headquartered in Basel, Switzerland.

FIDES Treuhand GmbH & Co. KG provides auditing and consulting services. It supports medium-sized companies, groups of companies, stock-exchange listed stock corporations and public sector entities as well as non-profit organisations across Germany in the areas of auditing, tax law and corporate and legal consultancy. The company was founded in 1919 and is headquartered in Bremen, Germany.

TERTIANUM AG provides senior residential care services. It also engages in the acquisition, holding, management, and sale of real estate. In addition, the firm specializes in the purchasing, continuous management, and sale of shares to domestic and foreign companies. The company was founded on October 13, 1978 and is headquartered in Zurich, Switzerland.