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Ulrich Lehner is a German businessperson who has been at the helm of 5 different companies. Currently, Dr. Lehner occupies the position of Chairman-Supervisory Board of Deutsche Telekom AG. Dr. Lehner is also on the board of Porsche Automobil Holding SE and Deutsche Telekom Services Europe GmbH.
Ulrich Lehner previously was Chairman-Supervisory Board of ThyssenKrupp AG and Controller at Fried Krupp AG Hoesch-Krupp (a subsidiary of ThyssenKrupp AG), Vice Chairman at Novartis AG, Chairman-Management Board at Henkel AG & Co. KGaA and President, MD & Chief Executive Officer at Henkel Asia-Pacific Ltd. (a subsidiary of Henkel AG & Co. KGaA) and Auditor at KPMG Deutsche Treuhand-Gesellschaft AG.
He received an undergraduate degree and a doctorate from Technische Universität Darmstadt.

Ulrich Lehnert currently works as a Director at Mannheimer Abendakademie und Volkshochschule GmbH.

Edward J.
Lehner is the founder of Greenseed Holdings LLC.
He is currently the President, Chief Executive Officer & Director at Ryerson Holding Corp.
since 2022.
He is also a Member at Financial Executives International, Association of Corporate Growth, and Turnaround Management Association.
Previously, he served as the Chairman at Metals Service Center Institute from 2019 to 2021.
He has also held positions such as General Manager, Director-Supply Chain & Logistics at Nucor Corp., Director at Modumetal, Inc., Director at Mississippi State Workforce Investment, Vice President & General Manager at Birmingham Steel Corp., Chief Financial Officer & Executive Vice President at Ryerson, Inc., Chief Financial & Administrative Officer at PSC Metals LLC from 2009 to 2012, Chief Financial Officer at Steel Dynamics Columbus LLC (Mississippi) from 2004 to 2008, and Vice President & General Manager at Laurel Steel Products Co. He completed his undergraduate degree at the University of Cincinnati (Ohio) in 1989.

Thomas Lehner is currently the President & Director at Luitpoldhütte GmbH.

Les L.
Lehner is currently the Chief Procurement Officer at Dave & Buster's Entertainment, Inc. He previously worked as the Vice President-Real Estate & Development at CEC Entertainment, Inc. from 2000 to 2015, as the EVP & Chief Development Officer at Red Robin Gourmet Burgers, Inc. from 2015 to 2018, and as the Chief Development Officer & Procurement Officer at Main Event Entertainment, Inc. from 2018 to 2022.

Don Lehner is currently the General Manager-McKean Technical Services Group at McKean Defense Group LLC.
He previously worked as a Principal at Leidos Holdings, Inc. Mr. Lehner completed his undergraduate degree at Excelsior College (New York).

Jean-Pierre Lehner is currently the Chairman at YSOPIA Biosciences SA. He also holds director positions at AptamiR Therapeutics, Inc., Eligo Bioscience SA, and Curio Digital Therapeutics, Inc. Previously, he served as the Chief Medical Officer & Senior Vice President at Sanofi from 2009 to 2013.
He also held the same position at Sanofi-Aventis U.S.
LLC.
Lehner earned a doctorate degree from Université Paris 1 Panthéon-Sorbonne.

Friedrich Lehner currently holds a position as a Member-Supervisory Board at Asamer Baustoffe AG.