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Fritz Vahrenholt currently works at Aurubis AG, as Chairman-Supervisory Board from 2018, Encavis AG, as Independent Member-Supervisory Board, the University of Hamburg, as Professor from 1991, Technische Universität Hamburg-Harburg, as Professor from 1991, Deutsche Akademie der Technikwissenschaften eV, as Member, and PUTZ & PARTNER Unternehmensberatung AG, as Member-Supervisory Board.
Dr. Vahrenholt also formerly worked at Verbio SE, as Deputy Chairman-Supervisory Board, Senvion GmbH, as Chairman-Executive Board from 2001 to 2007, RWE Innogy GmbH, as Chairman-Supervisory Board from 2012 to 2014, Hew AG Bauunternehmung Chur, as Chairman-Supervisory Board from 1991 to 1997, Rheinkraftwerk Albbruck-Dogern AG, as Chairman-Supervisory Board, Deutsche Wildtier Stiftung, as Chairman-Supervisory Board from 2012 to 2019, Körber-Stiftung, as Director, German Wildlife Foundation, as Director from 2012 to 2019, KELAG-Kärntner Elektrizitäts-AG, as Member-Supervisory Board, mateco GmbH, as Member-Supervisory Board from 2011 to 2012, ThyssenKrupp Technologies AG, as Member-Supervisory Board, ErSol Solar Energy AG, as Member-Executive Board, ThyssenKrupp Industrial Services Holding GmbH, as Member-Executive Board, Fraunhofer-Gesellschaft eV, as Member, Deutsche Shell AG, as Member-Executive Board from 1998 to 2000, Novatec Solar GmbH, as Member-Supervisory Board, Green Exchange LLC, as Member-Supervisory Board, Rat für Nachhaltige Entwicklung, as Member from 2001 to 2007, and Umweltbundesamt, as Head-Chemistry Department from 1976 to 1981.
Dr. Vahrenholt received his undergraduate degree in 1972 from the University of Münster and doctorate degree in 1974 from the University of Münster.

Fritz Hendricks served as the Chief Executive Officer & Director at Inteliquent, Inc. from 2017 to 2020.
Prior to that, he was the President & Member-Managers Board at Onvoy LLC.
He also worked as the Vice President-Total Care Operations at Qwest Corp.
Mr. Hendricks completed his undergraduate degree from Bellevue University.

Martin A.
Fritz currently works at Southern Gas Association, as Director, Missouri Slope Areawide United Way, as Director, EQT Foundation, as Director, Pennsylvania Institute of Certified Public Accountants, as Vice President, and Literacy Pittsburgh, as President.
Mr. Fritz also formerly worked at WBI Holdings, Inc., as President & Chief Executive Officer from 2015 to 2017, WBI Energy, Inc., as President & Chief Executive Officer, The United Way of Allegheny County, as Director, and EQT Corp., as President-Midstream & Vice President from 2003 to 2011.
Mr. Fritz received his undergraduate degree from the University of Pittsburgh and graduate degree from Dickinson Law School.