Dr. Philipp Zinsmayer

Dr. Philipp Zinsmayer
Director Investment

Mobile: +49 173 1551239
E-Mail: pz@koehlergroup.com
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Dr Philipp Zinsmayer received a PhD in Finance & Accounting at the University of St. Gallen (HSG). He also has a degree in Business and Engineering from the Karlsruhe Institute of Technology and a Master in Law from the Frankfurt School of Finance. Dr Philipp Zinsmayer has worked as a research assistant at HSG and as a business consultant for Bayer AG & ZF Friedrichshafen. He worked in the M&A department at Robert W. Baird & Co. and as chief of staff at the Internetstores Group. Since 2019, he has been the director of investment at the KOEHLER GROUP and heads the KOEHLER real estate unit.

René Marius Köhler

René Marius Köhler
Founder

Phone: +49 711 650001
E-Mail: rk@koehlergroup.com
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René Marius Köhler has been part of the international tech community since 2003 and has in-depth, detailed knowledge of the relevant companies and their technologies. At the age of 20, he founded “fahrrad.de” and the “Internetstores Group”, which he ran as CEO until 2016, and was one of the most successful founders in Germany. Since 2008, he has made investments in technology companies, private equity funds and begun building up a real estate portfolio. In 2016 René Marius Köhler founded the KOEHLER GROUP, an entrepreneurial family office with an investment focus on technology companies and digital business models.

Dimitri Krenz

Dimitri Krenz
Portfoliomanager

Mobile: +49 170 4559833
E-Mail: dk@koehlergroup.com
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Before joining the KOEHLER GROUP, Dimitri Krenz worked as a portfolio manager for an asset management company and as a securities and capital market specialist in the private & corporate banking sector. Furthermore, he worked as an independent lecturer and trainer with a focus on financial derivatives. After his apprenticeship as a banker and his diploma as a business economist, he gained a wide range of experience in the capital market. He has excellent knowledge of assessing market developments and is responsible for the portfolio management of the KOEHLER Equities tech share fund at KOEHLER Equities GmbH since 2020.

Regina Tag

Regina Tag
Executive Assistant

Mobile: +49 174 2146703
E-Mail: rt@koehlergroup.com
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Regina Tag supported the Internetstores Group in diverse functions between 2005 and 2017 and as an assistant to the CEO, where she attained a broad spectrum of competence and experience, while developing a solid network. Since 2017, she has been an executive assistant at KOEHLER GROUP Holding GmbH. In addition to supporting management in various areas, her core responsibilities include organisation, coordination and planning as well as real estate development and administration.

Sarah van Hauten

Sarah van Hauten
Executive Assistant

Mobile: +49 172 5233851
E-Mail: svh@koehlergroup.com
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Before assuming her responsibilities at KOEHLER GROUP Holding GmbH, Sarah van Hauten spent seven years working as an assistant in various business units and as a consultant and employee in the back office of the Controlling department at a large regional bank. Since 2020, she has been an executive assistant at KOEHLER GROUP Holding GmbH and has supported the management in the back office, in real estate and in various divisions of the daily business.

Alexandra Bischoff

Alexandra Bischoff
Executive Assistant

Phone: +49 711 650001
E-Mail: ab@koehlergroup.com
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Alexandra Bischoff successfully completed her Bachelor in International Business Communication and gained extensive assistance and sales experience in real estate and online business models. Since 2017, she has been an executive assistant at KOEHLER GROUP Holding GmbH and has supported the management in the coordination and planning as well as in the back office, real estate and equities.

Krystian Fiedler

Krystian Fiedler
Facility Manager

Mobile: +49 152 21643415
E-Mail: kf@koehlergroup.com
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For many years, Krystian Fiedler had various responsibilities at a company working throughout Europe in the recycling industry. Since 2017, he has been a facility manager at KOEHLER GROUP Holding GmbH. He handles residential and commercial properties and serves as the interface between owners, service providers and tenants. Furthermore, he is responsible for all the technical areas at KOEHLER GROUP Holding GmbH and leads diverse operational projects

Elisa Hascher

Elisa Hascher
Business Development

Phone: +49 711 650001
E-Mail: eh@koehlergroup.com
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Elisa Hascher completed her Bachelor in Business Administration and Media & Communication Science at Eberhard Karls University of Tübingen and gained extensive experience in change management at a well-known regional corporate consulting firm. Since 2018 she has helped KOEHLER GROUP Holding GmbH in project management & business development, parallel to her Master (M.Sc.) in Management at the University of Hohenheim in Stuttgart and currently as a master candidate.

David Fuchs

David Fuchs
Business Development

Phone: +49 711 650001
E-Mail: df@koehlergroup.com
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David Fuchs studies international financial management at the Nürtingen-Geißlingen University of Applied Science for Economics and the Environment. As part of this degree programme, he completed an internship in business development at KOEHLER GROUP Holding GmbH. Since 2021, he has been writing his Bachelor’s thesis and working in business development at KOEHLER GROUP Holding GmbH, helping it with acquisition and coordination in real estate and in the investments sector.

Philipp Schlüren

Philipp Schlüren
CEO & Co-Founder JetApp GmbH

Mobile: +49 172 6184180
E-Mail: ps@jetapp.com
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Philipp Schlüren, CEO and co-founder of JetApp GmbH, has dedicated himself to the private aviation industry since the beginning of his career. He has more than 10 years of experience in sales and management positions of an operator company (AOC). Furthermore,
Philipp Schlüren holds the highest commercial vehicle operator license and has additional qualifications as a flight tester and flight trainer, both for theory and in practice.

As CEO and co-founder of JetApp GmbH, Philipp Schlüren is responsible for the overall management of the company and focuses, in particular, on the further development of the product and sales.

Bernd Gottwick

Bernd Gottwick
Advisor Controlling & Finance

Phone: +49 711 650001
E-Mail: mail@koehlergroup.com
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Bernd Gottwick passed the tax advisor exam at the age of 25 after studying business administration and was one of the youngest tax advisors in Germany. He is a tax advisor, specialist advisor and certified family officer (VuFO). After working for a medium-sized tax consulting and auditing firm for many years, he has run his own firm as an independent tax advisor since 2016 and mainly advises family-owned companies and private individuals with many (real estate) assets.

Since 2018 he has advised KOEHLER Group Holding GmbH and its subsidiaries in controlling, finance and private equity.