Ellen Stellwagen

IBYKUS AG für Informationstechnologie provides information technology services to companies and government authorities. It specializes in system applications products and software solutions, as well as information safety management. The company was founded by Lutz Richter and Stephan Behr in 1990 and is headquartered in Erfurt, Germany.

QSIL GmbH Quarzschmelze Ilmenau engages in the manufacture of fused quartz products. It also specializes in the fusion of heavy wall cylinders, small and large diameter tubes, and the fabrication of customized products. Its products include cylinders, tubes, flat and oval tubes, rods and profiles, capillaries, fabricated quartzware, process tubing, and laboratory ware. The company was founded in 1992 and is headquartered in Langewiesen, Germany.

Pavoy GmbH Paul van Oyen is a German company that has been manufacturing a wide range of high-quality metal furnishings for over 75 years. The company is based in Hillesheim, Germany. The company's product line includes a complete assortment of furniture. The company was founded in 1954 by Paul van Oyen. The CEO is Helmut Vorndran.

Heraeus Quarzglas GmbH & Co. KG manufactures quartz glass for the optical, chemical, semiconductor, photovoltaic, high-tech, specialty fibers, solar, and medical technology industries. Its products include tubes, plates, ingots, rods, flanges, opaque blanks, cylinders, opaque quartz glass, quartz crucibles, quartz components, synthetic fused silica, material grades, fabricated quartz ware, lamp materials and optics. The company was founded on April 3, 1912 and is headquartered in Hanau, Germany.

Part of QSIL SE, hightech ceram ® Dr. Steinmann + Partner GmbH is a German-based company located in Frankenblick. The company works with leading companies, institutes, and universities to develop innovative materials and solutions for various applications, including machine and apparatus construction, electrical engineering, and oven construction. The company's goal is to provide optimal solutions for their customers by adapting the properties of their materials to suit specific applications. The company was founded in 1990 and was acquired by QSIL SE on September 01, 2021. hightech ceram ® Dr. Steinmann + Partner GmbH specializes in industrial ceramics, including engineering ceramics, high-temperature ceramics, insulation materials, and wear protection.

Qsil Ceramics GmbH develops, manufactures and distributes ceramic materials. The firm offers products such as molded parts, as fired, precision components, metalized components, assemblies, and tools. The company was founded in 1909 and is headquartered in Auma-Weidatal, Germany.

Thomas-Krenn Holding GmbH is an investment holding German company. The private company is based in Freyung, Germany. and has subsidiaries in Germany. The CEOs of the company are Helmut Vorndran, Ralf Hohmann.

VM Solar Jerez GmbH provides professional, scientific, and technical services. The company is based in Rottendorf, Germany. The CEO of the German company is Helmut Vorndran.

Vorndran Beteiligungs GmbH is a German investment services company. The private company is based in Rottendorf, Germany. The CEO of the company is Helmut Vorndran.

Schübel Antriebstechnik GmbH & Co. KG is a private company based in Rottendorf, Germany. Schübel Antriebstechnik GmbH & Co. KG wholesales machine tools. The German company was founded in 1950 and is currently led by CEOs Helmut Vorndran and Gabeli Heiko.

Part of VM Holding GmbH & Co. KG, Vorndran Capital (Schweiz) AG is an alternative investment manager. The company is based in Zurich, Switzerland. The Swiss company was founded in 2007. The CEO is Helmut Vorndran.

innovatis AG develops, manufactures, and sells laboratory devices for automated cell culture analysis. Its Cedex allows automation of cell counting on the basis of trypan blue staining. The company’s Adhex, Cellscreen, and Cellscreen Omniscan system are used to carry out measurements on unstained suspension cultures in the cell’s culture vessels. innovatis was founded in 1998 and is headquartered in Bielefeld, Germany.

Medos Medizintechnik AG manufactures medical devices for cardiac surgery and peripheral applications. It focuses on the continuous development of therapy solutions for cardiac surgeons and perfusionists. The company was founded in 1987 and is headquartered in Stolberg, Germany.

VM Capital Advisors GmbH (Vorndran Mannheims) is the private equity subsidiary of VM Principals GmbH, itself a subsidiary of VM Holding GmbH & Co. KG in Germany, headquartered in Dusseldorf, Germany. Formerly known as Ventizz Capital Partners Advisory AG, the firm was founded in 2000 by Dr. Helmut Vorndran, Reinhard Löchner and NPM Capital NV and was renamed in 2012 to reflect a focus on private equity and buyouts. They focus on technology-oriented growth companies, utilizing the entrepreneurial background and the international operating experience of their management team to differentiate themselves from other private equity firms. Located in Düsseldorf with an advisory office in St. Gallen, Switzerland, Vorndran Mannheims advises Delaware and Jersey-based funds which invest in buyouts and growth equity for small and medium-sized high-tech companies primarily in German-speaking Europe. Their funds are backed by fund-of-funds, university endowments and foundations, pension funds, industrial companies and banks and insurance companies.

Part of Bistum Limburg, St. Hildegard-Schulgesellschaft mbH is a state-recognized, Catholic high school and vocational school. The company is based in Limburg an der Lahn, Germany. The German company has achieved great success, with students from the Marienschule winning several awards at the statewide chemistry competition "Chemie, mach mit!" and over 30 students from the "Basics in Business" courses visiting the company MOBA Mobile Automation AG. The company also celebrated the achievements of its students in the second round of the Math Olympiad 2022/23. The CEO of the company is Stephan Behr.

X-FAB Semiconductor Foundries AG manufactures silicon wafers for mixed-signal integrated circuits (ICs). It combines modular CMOS and BiCMOS process technologies with service and support during IC development. In addition, from the early product development phase through to batch production, it offers online support, with access to technical documentation and product status on the production lines. The company is headquartered in Erfurt, Germany.

Part of Einhorn Verwaltungsgesellschaft mbH, Heraeus Quartz UK Ltd. is a company that manufactures quartz glass for the optical, chemical, and semiconductor industries. Heraeus Quartz UK Ltd. is based in Wallsend, UK. Heraeus Quartz was founded in 1998.