Greiner Bio-One International announces CEO Rainer Perneker to step down from position, leave company on August 28; Greiner AG COO Manfred Stanek to take over as head of the medical products division on an interim basis until a successor is appointed

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July 20, 2023 (press release) –

Rainer Perneker, who has been the CEO of Greiner Bio-One International GmbH since 2012, will step down as head of the division and leave the company effective August 28. Manfred Stanek, COO of Greiner AG, will take over as head of the medical products division on an interim basis until a successor is appointed.

“Rainer Perneker has had a bigger impact on Greiner Bio-One than almost anyone else. Under his leadership, the division has developed into one of the leading international players in the medical technology and pharmaceutical industry. For more than 30 years, he has played a key role in shaping the successful and unique history of the company, which began 60 years ago with a plastic petri dish. I would like to express my heartfelt gratitude to Rainer Perneker for his exemplary commitment and the outstanding contribution he has made. He has driven the development of the division with a pronounced growth-oriented mindset and prepared the organization and its employees for the future. His tireless dedication, hard work and contribution to the company’s success deserve our utmost respect,” commented Axel Kühner, CEO of Greiner AG.

Although it has not yet been decided who will succeed Rainer Perneker as head of the division, Manfred Stanek, COO of Greiner AG, emphasized: “We will continue to press ahead with Greiner Bio-One’s global growth path under new leadership. Our main objectives for the coming years are to expand our market share in the strategically important regions of North America and Asia and to focus on trends and growth opportunities in areas such as cell therapy, 3D cell culture, and digital preanalytics.”


Background information:

Manfred Stanek (54) has been the COO of Greiner AG and a member of the Executive Board since 2023. Hailing from Vienna, he has more than 25 years of international management experience (including in the US and Brazil) with a focus on sales, marketing, and strategic business development. Prior to joining the Executive Board, Stanek spent six years as the CEO of Greiner Packaging, which produces plastic packaging in the food and non-food sector and has more than 4,900 employees worldwide. Before moving to Greiner, Stanek worked in various management positions at the US aluminum group Novelis. Prior to that, he was the CEO of the zinc producer U.S. Zinc. The father-of-three holds an MBA degree from the Vienna University of Economics and Business and has completed an Executive Education Program at the French business school INSEAD.


About Greiner Bio-One
Greiner Bio-One is one of the world’s leading providers of high-quality plastic products for medical and laboratory use. Its specialist products for in-vitro diagnostics, biotechnology and the diagnostic and pharmaceutical industries are sold in more than 100 countries worldwide. Greiner Bio-One operates via three business units: Preanalytics, BioScience, and Mediscan. It has 29 branches in 22 countries and generated turnover of EUR 693 million in 2022.

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