George Rietbergen

5square BV (5square) is an independent private equity investment firm located in Loenen a /d Vecht, The Netherlands. Founded in 2004 by Remco van den Heuvel and Mark Gitsels, the firm was formerly known as 5square Investments BV and is composed of partners who provide significant capital along with other private investors. The firm specializes in MBOs, MBIs, expansion capital, succession issues of family-run firms and distressed firms requiring a turnaround.

Stadium Connected BV provides computer integrated systems.

Part of Administratiestichting W. Oosterberg, Koninklijke Oosterberg BV wholesales electrical equipment. The company is based in Apeldoorn, Netherlands. The Dutch company was founded in 1893 by Willem Oosterberg. George Rietbergen has been the CEO of the company since 2021.

Part of Arriva Plc, Arriva Nederland is a Dutch company that provides passenger transportation services. The company is based in Heerenveen, the Netherlands. The company was founded in 1999. The CEO is Anne Hettinga.

Goodyear Dunlop Tires Germany GmbH manufactures and supplies car, truck, motorcycle and racing tires. Its product technologies encompass tread design, multi-blade system, bead seat system, multi-radius tread and flatter tread profile. The firm is engaged in tire and equipment development and management. The company was founded in 1888 and is headquartered in Hanau, Germany.

Part of Goodyear Tire & Rubber Co., Goodyear Belgium NV/SA is a Belgian company that manufactures and distributes tires and other rubber products. The company is based in Kontich, Belgium.