Dirk Jochen Biesterfeld

M.M. Warburg & Co. KGaA (MM Warburg & Co. PB) is the investment advisory subsidiary of M.M. Warburg & Co. Gruppe KGaA in Germany. Established in 1798, M.M.Warburg & Co. is one of the largest private banks in Germany. All their capital is held by private individuals, while the Bank is managed by its co-owners. Located in Hamburg, Frankfurt and Cologne with subsidiary private banks in Berlin, Braunschweig, Bremen, Hanover, Luxembourg and Zurich, Switzerland, MM Warburg & Co. PB is a universal bank which offers a comprehensive range of services and products including financial planning, asset management, securities advice, advice on alternative investments and advice on inheritance planning and foundations.

HANNOVER Finanz GmbH (HF) is an independent private equity firm headquartered in Hannover in northern Germany with a branch in Austria. HF is a majority-owned subsidiary of HANNOVER Finanz Group, which became independent through a management buyout in 1993. HF was established in 1979 within HDI-Haftpflichtverband der Deutschen Industrie VaG, which later became the German insurance group Talanx. HF specializes in private equity investing. Their shareholders and clients are primarily large German institutions in the banking and insurance sectors. The firm manages an extensive range of investment funds in which the group's shareholders are significant investors. HANNOVER Finanz Group and private individuals also invest in the firm's funds.

Biesterfeld Plastic GmbH is part of the Biesterfeld-Group. As one of the pan-European distributors they are a partner for innovative solutions regarding Engineering Polymers, Standard Polymers, Acrylates, Polyesters and Styrenic Copolymers as well as Performance Rubber and additives. They maintain long-standing sales partnerships with market leaders of the plastic industry and offer a fully homogenous delivery program in 42 countries across Europe and North Africa where they are presented with an area-wide, decentralized sales structure. Their family tradition of reliable and customer-focused cooperation has always been a key corporate principle. They want to achieve success together with their suppliers and partners. Biesterfeld Plastic subscribes to a corporate philosophy based on the principles of constructive, partnership-minded and transparent cooperation which brings long-term benefit to all involved. They will only be content when customers are content – this is their personal requirement which far exceeds the provision of a complete delivery program.

ebm-papst Mulfingen GmbH & Co. KG develops and supplies industrial fans and motors. Its products include compact fans, axial fans, centrifugal fans, tangential fans, heating technology, hot air blowers, pumps, motors and drive systems. The company was founded by Gerhard Sturm and Heinz Ziehl in 1963 and is headquartered in Mulfingen, Germany.

Biesterfeld France SARL wholesales & distributes engineering and standard polymer products. The company was founded in 1989 and is headquartered in Rueil-Malmaison, France.

Part of Biesterfeld AG, Biesterfeld Petroplas Ltd. is a British company that wholesales and distributes various types of plastics, including engineering thermoplastics, thermoplastic elastomers, styrene copolymers, standard polymers, and additives. The company is based in Abingdon, UK. The CEOs of the company are Carsten Harms, Guy Payne.

WEIDMÜLLER Holding AG & Co. KG is a global company based in Detmold, DE. and has a global presence of subsidiaries in several regions. The German company manufactures power supplies and electronic connection products. Volker Bibelhausen has been the CEO of the private company since 2020.

Part of KPMG International Cooperative, KPMG P/S is a professional services network providing audit, tax, and advisory services. The company is based in Copenhagen, Denmark. KPMG has a worldwide presence and is dedicated to serving their clients.

DIAKOVERE gGmbH operates as a day care center. The private company is based in Hannover, Germany. and has subsidiaries in Germany. The German company was founded in 2016. The CEO is Stefan David.

BAG Verwaltungs GmbH provides investment services. The private company is based in Hannover, Germany. The CEOs are Schopf Christopher, Jürgen von Wendorff. The German company was founded in 2014.

Weidmüller GmbH & Co. KG is a company that was founded in 2004 and is based in Detmold, Germany. Part of WEIDMÜLLER Holding AG & Co. KG, the German company manufactures electronic components.