Insiders

Foto Gerhard Watzinger
Gerhard Watzinger

Herr Gerhard Watzinger ist ein unabhängiger Direktor bei KnowBe4, Inc. ein unabhängiger Direktor bei Absolute Software Corp. ein Vorsitzender bei CrowdStrike, Inc. ein Vorsitzender bei CrowdStrike Holdings, Inc. ein unabhängiger Direktor bei Mastech Digital, Inc. und ein Chief Executive Officer bei Association For Preservation Technology International. Er ist Mitglied des Board of Directors bei KnowBe4, Inc. und Absolute Software Corp. sowie bei Mastech Digital, Inc. Herr Watzinger war zuvor als President & Chief Executive Officer bei IGATE Corp., als Executive Vice President bei Intel Corp., als EVP-Corporate Strategy, Mergers & Acquisitions bei McAfee, Inc., als Chief Strategy Officer & Executive Vice President bei McAfee LLC, als Chief Executive Officer bei SafeBoot BV, als Chief Executive Officer bei iGate Global Solutions Ltd, ein Chief Executive Officer von SafeBoot Holdings BV, ein Senior VP-Staffing & Solutions Operations von IGATE Corp, ein Chief Executive Officer von APT International, ein Managing Director von Capgemini America, Inc. ein Chief Executive Officer von Mascot Systems Pvt Ltd. und ein Partner von PricewaterhouseCoopers LLP. Er war auch im Vorstand von TeleSign Corp. Seinen Bachelor-Abschluss erhielt er an der Technischen Universitt Mnchen.


Foto Gerhard Mayr
Gerhard Mayr

Gerhard N. Mayr ist Mitglied des Verwaltungsrats von Almirall SA, Project HOPE-The-People-To-People HealthFoundation, Inc. und GVK Biosciences Pvt Ltd. sowie der Vienna Science, Research & Technology Foundation und Mitglied der Patrons Circle Division am INSEAD. Zuvor war er unabhängiger Non-Executive Director bei UCB SA, Director bei Lonza Group AG, Mitglied des U.S.-Ägyptischen Präsidentenrats und Executive Vice President-Pharmaceutical Operations bei Eli Lilly & Co. Gerhard N. Mayr erwarb einen MBA an der Stanford University und einen Abschluss an der Eidgenössischen Technischen Hochschule Schweiz.


Foto Gerhard Schroeder
Gerhard Schroeder

Gerhard Schroeder ist der ehemalige Ministerpräsident von Niedersachsen und der ehemalige Bundeskanzler von Deutschland. Herr Schroeder hat die Position des Vorsitzenden bei Rosneft Oil Co. und des Vorsitzenden bei der Nord Stream AG. In seiner früheren Karriere war Herr Schroeder Präsident des Bundesrates der Bundesregierung, Vorsitzender der Sozialdemokratischen Partei Deutschlands SPD und Vorsitzender der Gruppe der Sieben. Er erhielt einen Abschluss an der Universität Göttingen.


Foto Gerhard Potgieter
Gerhard Potgieter

Gerhard Potgieter ist Chief Operating Officer bei Impala Platinum Holdings Ltd. In seiner bisherigen Laufbahn war er Chief Executive Officer & Executive Director bei Impala Platinum Holdings Ltd., Chief Technical Officer von Anglo-African Minerals Plc und Managing Director-Africa bei MMC Norilsk Nickel PJSC sowie Managing Director-Africa bei LionOre Mining International Ltd. (eine Tochtergesellschaft von MMC Norilsk Nickel PJSC).


Foto Gerhard Cromme
Gerhard Cromme

Gerhard Cromme ist eine deutsche Unternehmerpersönlichkeit, die an der Spitze von 12 verschiedenen Unternehmen gestanden hat. Derzeit ist er Vorsitzender des Aufsichtsrats der Auto1 Group SE, Vorsitzender des Aufsichtsrats der Auto1 Group AG (eine Tochtergesellschaft der Auto1 Group SE) und Vorsitzender der Target Global Acquisition I Corp. Er ist außerdem Mitglied des Verwaltungsrats von Oddo BHF SCA (ehemaliger Co-Vorsitzender des Aufsichtsrats), Highview Enterprises Ltd. und eClear AG. Gerhard Cromme war zuvor Vorstandsvorsitzender der Volkswagen AG, Vorsitzender des Aufsichtsrats der Siemens AG, Vorsitzender des Aufsichtsrats der ThyssenKrupp AG, Vorsitzender der ThyssenKrupp Automotive AG, Vorsitzender des Aufsichtsrats der thyssenkrupp Steel Europe AG, Vorsitzender des Vorstands der Krupp Stahl AG und Vorsitzender des Vorstands der Fried Krupp AG Hoesch-Krupp (alles Tochtergesellschaften der ThyssenKrupp AG) sowie Vorsitzender der Geschäftsführung der Vereinigten Glaswerke GmbH. Gerhard Cromme studierte und promovierte an der Universität Münster, studierte an der Sorbonne und an der Harvard University.


Foto Gerhard Bauer
Gerhard Bauer

Gerhard Bauer is currently a Director at Sitem-Insel AG and Swiss Medtech.
Previously, he worked as the VP-Global Operations & Engineering Officer at Bausch & Lomb, Inc. He also worked as a Portfolio Manager at Raiffeisen Kapitalanlage-Gesellschaft mbH from 2002 to 2006.
From 2010 to 2020, he was the Head-Research, Development & Operations at Straumann Holding AG.
He also worked as a Principal at GlaxoSmithKline, Inc. Dr. Bauer holds a graduate and doctorate degree from Ludwig-Maximilians-Universität München.


Foto Gerhard Roiss
Gerhard Roiss

Gerhard Roiss ist ein österreichischer Unternehmer, der bereits 10 verschiedene Unternehmen geleitet hat. Dr. Roiss ist Mitglied des Vorstands der Sulzer AG. Zuvor hatte er die Position des Aufsichtsratsvorsitzenden der NOVA Chemicals Corp. inne, Vorsitzender des Aufsichtsrates der OMV Petrom SA, Vorstandsvorsitzender der OMV AG, Vorsitzender des Aufsichtsrates der OMV Deutschland GmbH, Geschäftsführer der OMV Refining & Marketing GmbH und Geschäftsführer der OMV Refining & Marketing GmbH (alles Tochtergesellschaften der OMV AG), Vorsitzender der Borealis Agrolinz Melamine GmbH, Vorsitzender des Aufsichtsrates der VERBUND AG, Vorsitzender der OMV Petrol Ofisi AS und Vorstandsvorsitzender der PCD Polymere GmbH. Er promovierte an der Johannes Kepler Universitt Linz.



Foto Gerhard Zeiler
Gerhard Zeiler

Gerhard Zeiler is currently the Chairman of the Supervisory Board at TVN SA, RTL Radio Deutschland GmbH, Alpha Media Group Ltd., Plus Productions SA, Ediradio SA, Alpha Doryforiki Tileorasi SA, Turner Broadcasting System, Inc., and Warner Bros.
Discovery, Inc. He is also the President of International at Turner Broadcasting System, Inc. and Warner Bros.
In the past, Mr. Zeiler served as the Chief Executive Officer and Executive Director at RTL Group SA, Chief Executive Officer and Director at CLT-UFA SA, Chief Executive Officer at Österreichischer Rundfunk, Chief Executive Officer at RTL Television GmbH, Chief Executive Officer at Deutsches SportFernsehen GmbH, Chief Executive Officer at RTL 2 Fernsehen GmbH & Co. KG, Chief Executive Officer at TM-TV GmbH, and Chief Executive Officer at Austrian Broadcasting Corp.
He was also the Non-Executive Chairman at Gagfah SA, Chairman at M-RTL Zrt, Vice Chairman at Alpha Satellite Television SA, and Director at Central European Media Enterprises Ltd.
Mr. Zeiler was a Member of the Executive Board at Bertelsmann SE & Co. KGaA, Member of the Supervisory Board at Métropole Télévision SA, Member of the Supervisory Board at Vonovia SE, and Member of the Supervisory Board at RTL Nederland BV.
He served as the President at Turner International Latin America, Inc. and Chief Revenue Officer at Warner Media LLC.
Mr. Zeiler was also a Spokesman for the Government of Austria and the Austria Federal Ministry of Education & Women.


Foto Joachim Gerhard Drees
Joachim Gerhard Drees

Joachim Gerhard Drees ist ein deutscher Unternehmer, der bereits 5 verschiedene Unternehmen geleitet hat. Derzeit ist er Vorsitzender der European Automobile Manufacturers Association und Vorsitzender der MAN Truck & Bus Deutschland GmbH. Er ist auch im Vorstand der RENK AG, der Rheinmetall MAN Military Vehicles GmbH und der MAN Energy Solutions SE. Herr Drees war zuvor Chief Financial Officer bei der Drees & Sommer SE, Manager-Transmission Division Human Resources bei der Daimler AG und Commercial Director-Gaggenau Transmissions Product bei der Mercedes-Benz Trucks MENA Holding GmbH (einer Tochtergesellschaft der Daimler AG), Head-Commercial Vehicles Controlling bei Mercedes-Benz Trucks Vostok LLC, Commercial Director-Gaggenau Transmissions Product bei Daimler Truck Group, Director bei HgCapital LLP, Chief Executive Officer für MAN Truck & Bus SE, Chairman-Management Board & CEO der MAN SE, Mitglied des Management Boards der TRATON SE, Projektleiter bei Baumgartner & Partner Unternehmensberatung GmbH und Abteilungsleiter bei der Treuhandanstalt. Herr Drees erhielt einen MBA von der Portland State University und einen MBA von der Universitt Stuttgart.


Foto Bo Gerhard Annvik
Bo Gerhard Annvik

Herr Bo Gerhard Annvik ist President, Chief Executive Officer & Director bei Indutrade AB. Er ist Mitglied des Board of Directors bei Indutrade AB, AB Handel Och Industri, Handelsbanken Institutionell Kortrnta Criteria, Indutrade UK Ltd., Jernkontoret, SSAB AB und Tibnor AB. Herr Annvik war zuvor als President & Chief Executive Officer bei Haldex AB und als Executive Vice President-Specialty Stainless bei Outokumpu Oyj tätig.


Foto Anders Gerhard Ullberg
Anders Gerhard Ullberg

Anders Gerhard Ullberg ist ein schwedischer Geschäftsmann, der 14 verschiedene Unternehmen geleitet hat und Vorsitzender bei Boliden AB, Vorsitzender bei Studsvik AB, Vorsitzender bei Eneqvist Consulting AB, Vorsitzender bei Rdet fr Finansiell Rapportering, Vorsitzender bei Mercur Solutions AB und Vorsitzender bei Mercur Partners AB ist. Er ist außerdem im Aufsichtsrat von 11 weiteren Unternehmen. In seiner früheren Karriere hatte er die Position des Vorsitzenden bei BE Group AB, des Vorsitzenden bei Diamorph AB, des Vorsitzenden bei BasEl i Sverige AB, des Vorsitzenden bei Industrikraft i Sverige AB, des Präsidenten & Chief Executive Officer bei SSAB AB, des Chief Financial Officer bei Celsius Industrier AB, des Chief Financial Officer & Vice President bei Swedish Steel AB, des Vorsitzenden bei Tieto Oyj, des Vorsitzenden bei Eneqvistbolagen AB, des Chief Financial Officer bei Celsius AB und des Vorsitzenden bei Natur & Kultur. Herr Ullberg erwarb einen Abschluss an der Stockholm School of Economics.


Foto Hermann Watzinger
Hermann Watzinger

Hermann Watzinger is currently the Co-Managing Director at Allee165 GmbH and the Founding Partner at Mercer Street Capital.
Previously, he worked as a Director at RBS (Deutschland) AG, Director at ayondo Holding AG, European Head-Financial Institutions at NatWest Group Plc, and Head of Global Markets Germany & Austria at ABN AMRO Bank NV (Deutschland).


Foto Harald Watzinger
Harald Watzinger

Harald Watzinger currently works as a Co-Managing Director at Ampco Metal Deutschland GmbH.






Foto Gerhard J. Drescher
Gerhard J. Drescher

Gerhard J.
Drescher
has been a Director of Dorato Resources, Inc. since 2000.
Mr. Drescher has been President of Python Technologies since 1989.




Foto Gerhard Eschelbeck
Gerhard Eschelbeck

Gerhard Eschelbeck currently works at Onapsis, Inc., as Director from 2019, Acalvio Technologies, Inc., as Director from 2022, WootCloud, Inc., as Director, and Kodiak Robotics, Inc., as Chief Information Security Officer.
Dr. Eschelbeck also formerly worked at GE Healthcare Ltd.
(United Kingdom), as Chief Operating Officer & Director from 1999 to 2001, Amersham Health, as President & Director from 1991 to 2001, Onapsis, Inc., as Director, NopSec.com, Inc., as Director, Deutsche Bank AG, as Member-Supervisory Board from 2017 to 2022, Google LLC, as Vice President-Security & Privacy Engineering from 2014 to 2019, Qualys, Inc., as Chief Technology Officer & VP-Engineering from 2001 to 2005, Webroot LLC, as Chief Technology Officer & Senior Vice President from 2006 to 2011, Mcafee Associates, Inc., as Vice President-Engineering from 1997 to 1999, Sophos Ltd., as Chief Technology Officer from 2011 to 2015, Network Associates, Inc., as Senior Vice President-Engineering, Sophos Group Ltd., as Chief Technology Officer & Senior Vice President from 2011 to 2014, and Aurora Operations, Inc., as Chief Information Security Officer.
Dr. Eschelbeck received his graduate degree in 1993 and doctorate degree in 1996 from Johannes Kepler Universität Linz.







Foto Gerhard H. Müller
Gerhard H. Müller

Mr. Gerhard H.
Müller
is Head of Strategy at EFG Bank AG.
He spent over sixteen years with RBS Coutts, latterly as CEO of RBS Coutts Bank since 2006 and of RBS Wealth International since 2009.
In these capacities, he was responsible for offices in Zurich, Bern, Geneva, Lugano, Singapore, Hong Kong, Montevideo, Isle of Man, as well as the international division of Coutts & Co in London.
From 1999 to 2006, he was Chief Financial Officer and Chief Risk Officer of RBS Coutts Bank.
He co-led the merger with Bank von Ernst in 2005, which established RBS Coutts Bank in the front rank of foreign banks in Switzerland.



Foto Gerhard Posset
Gerhard Posset

Gerhard Posset worked at EVN AG from 1995 to 2011.
He held the position of Vice Chairman-Supervisory Board from 2009 to 2011.


Foto Gerhard Skupke
Gerhard Skupke

Gerhard Skupke served as the Chairman of the Supervisory Board at E.DIS AG.
He also worked as a Member of the Supervisory Board at E.ON SE in 2008.


Foto Gerhard Maier
Gerhard Maier

Gerhard Maier worked at SAP SE from 1989 to 2012.
He held the position of Member-Supervisory Board from 2010 to 2012.







Foto Gerhard Ries
Gerhard Ries

Gerhard Ries is the founder of DiaMedCare GmbH (2016), BioMedPartners AG (2002), and Diamedcare AG (2016).
He is currently the Chairman at NeoPrediX AG, Director at Devis Pharma AG, apoplex medical technologies GmbH, PrecisionOS Technologies Inc., SkyCell AG, Food Guardians AG, and Member-Supervisory Board at numares AG.
He was also a Director-Supervisory Board at Curetis GmbH and Vectura GmbH.
Dr. Ries was an Independent Non-Executive Director at Kuros Biosciences Ltd.
from 2016 to 2019 and a Director at Immunic AG.
He was also a Member-Management Board at ESBATech AG.
Dr. Ries received his graduate and doctorate degrees from the University of Basel and his graduate degree from Fachhochschule Weihenstephan.


Foto Gerhard Weisbrich
Gerhard Weisbrich

Gerhard Weisbrich is Chief Operating Officer (COO) and a member of the Board of Management of BlackRock Asset Management Deutschland AG.
Since joining the company on 1 May 2001, he has been as the general manager responsible for the areas of Fund Service, Controlling, Risk Management, Quality Management and IT processes.
Weisbrich began his professional career with the Hypo-Bank in Munich.
Before switching to INDEXCHANGE Investment AG, he was responsible for the fund service of special-purpose funds, investment funds offered to the public and portfolio management at Allfonds Bayerische Kapitalanlagegesellschaft in Munich (now Activest Investmentgesellschaft mbH).
Gerhard Weisbrich has held responsible positions in asset management since 1975 and actively helped shape the HVB Group's fund business during this time.





Foto Gerhard Heiberg
Gerhard Heiberg

Gerhard Heiberg is a Member of the International Olympic Committee since 1994.
He previously served as the President & Chief Executive Officer of Norcem AS from 1973 to 1987 and as the Chairman of DNB Bank ASA from 1995 to 2000.


Foto Gerhard Gribkowsky
Gerhard Gribkowsky

Gerhard Gribkowsky formerly worked at Bayerische Landesbank, as Chief Risk Officer, Strabag AG, as Member-Supervisory Board, and STRABAG SE, as Member-Supervisory Board from 2006 to 2010.





Foto Gerhard Harder
Gerhard Harder

Gerhard Harder has worked as the Chief Executive Officer at swb AG and as the Chairman-Supervisory Board at Die Sparkasse Bremen AG.








Foto Gerhard Kümmel
Gerhard Kümmel

Gerhard Kümmel is currently a Member-Supervisory Board at Bosch Solar Energy AG, TTS Tooltechnic Systems Holding AG, Robert Bosch Holding Malta Ltd., Bosch Robert Finance Malta Ltd., and Robert Bosch Finance LLC.
He previously held positions as Chairman at Buderus AG, Deputy Chairman-Supervisory Board at aleo solar GmbH, Chairman-Supervisory Board at TTS Tooltechnic Systems AG & Co. KG, Contoller and Director-Finance & Administration at Robert Bosch GmbH, Head-Finance & Controlling at Bosch Ltd., and Member-Supervisory Board at Bosch Thermotechnik GmbH and Bosch Rexroth AG.
He obtained his undergraduate degree from Universität Saarbrücken in 1973.




Foto Gerhard Ammann
Gerhard Ammann

Gerhard Ammann is currently the Chairman-Supervisory Board at Bank von Roll AG and a Director at Welinvest AG.
He was previously the Chairman & Chief Executive Officer at Deloitte AG from 1993 to 2007.
He also served as the Chief Executive Officer at Experta Audit Ltd.
and as a Director at Homestake Mining Company of California.
Additionally, he was the Chairman at Eurasian Natural Resources Corp Ltd.
in 2013.
He was a Director at Swiss Chamber of Audit from 2004 to 2007.
Mr. Ammann completed his undergraduate degree at the University of Siegen.


Foto Gerhard Altmann
Gerhard Altmann

Gerhard Altmann currently works as the Head of Press Relations at Burgenländische Elektrizitätswirtschafts AG.








Foto Gerhard Orgonas
Gerhard Orgonas

Gerhard Orgonas is an Analyst at Joh.
Berenberg, Gossler & Co. KG (United Kingdom) since 2016.
Prior to this, he worked as a Research Analyst at Merrill Lynch International from 2010 to 2011, at Citigroup Global Markets Ltd.
from 2006 to 2009, and at Merrill Lynch, Pierce, Fenner & Smith Ltd.
from 2009 to 2010.
He also worked as an Analyst at Exane SA (Broker) and as a Research Analyst at Exane Ltd.


Foto Gerhard Lerch
Gerhard Lerch

Gerhard Lerch served as Chief Executive Officer at ContiTech Holding GmbH from 1989 to 2004 and at Continental DÄCK Sverige AB from 1976 to 1981.
He was also a Member of the Management Board at Continental AG from 1970 to 2008.
Lerch was the General Manager of Consumer Products at Swedish Match AB from 1981 to 1989 and Assistant Manager at Vergölst GmbH in 1971.
He served as Chairman of the Supervisory Board at MAX Automation SE from 2014 to 2018 and Chairman of the Management Board at ContiTech Deutschland AG from 2004 to 2008.
Lerch was also a Director at Phoenix AG from 2004 to 2005 and Chairman of the Supervisory Board at Vecoplan AG.
He received his undergraduate degree from the University of Pforzheim in 1969.




Foto Gerhard Ungar
Gerhard Ungar

Mr. Gerhard Ungar is Chairman-Management Board & CEO at HWA AG.



Foto Gerhard J. Beenen
Gerhard J. Beenen

Gerhard J.
Beenen
was Chief Operating Officer of Sunrise Telecom, Inc. until June 27, 2008.
Dr. Beenen was Vice President of Engineering at Steridian, Inc. from July 2005 to March 2006.
From June 2004 to July 2005, he managed personal investments.
From September 2000 to June 2004, Dr. Beenen was Vice President and General Manager of Network Elements, Inc. He received a PhD in Analytical Chemistry from Oregon State University and a BS in Chemistry from the University of Wisconsin.


Foto Gerhard Rauter
Gerhard Rauter

Gerhard Rauter was a Managing Director & Vice President at Infineon Technologies Dresden GmbH & Co. KG.
He was also a Member-Supervisory Board at SÜSS MicroTec SE in 2008.
From 2009 to 2011, he served as the Chief Operating Officer at Global PVQ SE.
Additionally, he was a Member-Executive Board at Solibro AB.



Foto Gerhard Burda
Gerhard Burda

Gerhard Burda has been Chief Executive Officer of the Atronic Group of Companies since 2005.
He joined Atronic in 1993.
In 1996, he was promoted to Director of Sales and Marketing for Atronic International and was made Managing Director in 2000.
Most recently, Mr. Burda was appointed as an Ambassador for the Gaming Standards Association.





Foto Gerhard Jacob
Gerhard Jacob

Gerhard Jacob is currently an Independent Director at Imagine Lithium, Inc. He was previously an Independent Director at Pure Energy Minerals Ltd.
and President at Goldmark Minerals Ltd.
Jacob is a graduate of the University of Gottingen.




Foto Gerhard Wöhrl
Gerhard Wöhrl

Gerhard Wöhrl is currently a Managing Director at GVC Gesellschaft für Venture Capital Beteiligungen mbH, GOVAN Beteiligungs GmbH, GOVAN Holding GmbH & Co. KG, GOVAN Verwaltungs GmbH, and Gebrüder Wöhrl Grundbau GmbH.
He previously worked as a Managing Director at Mr. Wöhrl Beteiligungsgesellschaft mbH and served as a Member-Supervisory Board at TOM TAILOR Holding SE and SiNN GmbH.
Mr. Wöhrl holds an MBA from INSEAD.





Foto Gerhard Tröster
Gerhard Tröster

Gerhard Tröster is the founder of Amphiro AG, which was founded in 2009.
He held the title of Chairman-Supervisory Board at Amphiro AG.
He is also the founder of u-blox AG, which was founded in 1997.
Currently, Dr. Tröster is a Director at u-blox AG.
Dr. Tröster is the founder of u-blox Holding AG, which was founded in 1997.
He held the title of Non-Executive Director at u-blox Holding AG until 2019.
Dr. Tröster's current job is as a Professor at the Swiss Federal Institute of Technology, a position he has held since 1993.
Previously, he worked as a Research Manager at Telefunken Microelectronic.
Dr. Tröster obtained a doctorate degree from Technische Universität Darmstadt and an undergraduate degree from the University of Karlsruhe.



Foto Gerhard Wessel Riemann
Gerhard Wessel Riemann

Gerhard Wessel Riemann is currently the Director & Vice President at Afrika-Verein der deutschen Wirtschaft eV and a Member-Presidency at Eastern & Central Europe Association.
Previously, he was the Chief Executive Officer at Imperial Logistics International Beteiligungsgesellschaft mbH and an Executive Director at Imperial Logistics Ltd.
from 2000 to 2014.


Foto Gerhard Meyer
Gerhard Meyer

Gerhard Meyer served as Chairman-Management Board at EUROVIA Verkehrsbau Union GmbH, Managing Director at IMA Ingenieurgesellschaft mbH, and Managing Director at EUROVIA GmbH.
He received an undergraduate degree from the Technical University of Berlin in 1983.








Foto Gerhard Hofmann
Gerhard Hofmann

Gerhard Hofmann is currently the Chairman-Supervisory Board at BAG Bankaktiengesellschaft, the Co-Managing Director at GBH Holding GmbH & Co. KG, and the Co-Managing Director at Galleon Embedded Computing GmbH.
Previously, he served as the Director-Supervisory Board at DZ BANK AG Deutsche Zentral-Genossenschaftsbank from 2009 to 2012 and as the Managing Director at Rademacher Geräte-Elektronik GmbH from 2009 to 2011.
He also held the position of President at the European Association of Co-operative Banks.


Foto Gerhard Kreysa
Gerhard Kreysa

Gerhard Kreysa currently holds a position as a Member-Supervisory Board at ThyssenKrupp Technologies AG.




Keine Ergebnisse zu dieser Suche

  1. Börse
  2. Erweiterte Suche
  3. Gerhard Watzinger