Wolfgang de Limburg Stirum

VPK Group NV engages in the manufacturing and distributing of paper-based packaging materials. Its packaging solutions include customized protective, transit, consumer, cores, displays and promotional packaging. The firm offers logistical, packaging design and innovation, value engineering, retail-ready, printing, branding and customer experience, digital integration, and customer service solutions for consumer goods, food and beverages, industrial, and e-commerce industries. The company was founded in 1935 and is headquartered in Aalst, Belgium.

Keesing Group BV provides publishing services. It offers puzzle magazines in the Netherlands, France, Belgium, Denmark, Germany, Spain, Italy, Sweden, Norway, Hungary, and the United Kingdom. The firm's brands include Denksport, Sport Cérébral, Tankesport, Megastar, Jan Meulendijks, 10 voor Taal, and Win. The company was founded by Isaäc Keesing in 1911 and is headquartered in Amsterdam, the Netherlands.

Sentage Corp. provides oral restoration technology. It offers fixed, removable, implants, sleep appliance therapy, occlusal therapy, orthodontics, chairside guides and prescriptions RX products and services. The company was founded in 1989 and is headquartered in Minneapolis, MN.

Publihold SA publishes educational, academic and business books. It designs, produces, and sells textbooks and collections for students and teachers. It also provides educational support tools that help in implementing the curriculums. The company was founded by Albert De Boeck in 1883 and is headquartered in Brussels, Belgium.

Apheon (Apheon) is a private equity firm, a subsidiary of Sienna Capital Management SA founded in 2005 by Ian Gallienne. The firm is headquartered in Brussels with additional offices in Milan, Paris and Madrid.

Sausalitos Holding GmbH owns and operates a chain of leisure restaurants and bars. The company was founded in 1994 by Gunilla and Thomas Hirschberger and is headquartered in Munich, Germany.

Haudecoeur SASU engages in the importation and distribution of food. The firm's products include rice, pulses, couscous, dried fruits, spices, cereals, and pasta. Its brands include Riz du monde, Samia, Legumor, Tantie, N°1, and Profruit. The company was founded in 1932 and is headquartered in La Courneuve, France.