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LEADERSHIP TEAM

Our Leadership Team drives the expansion and performance of our Topgolf venues

David Speiser

David Speiser

CEO, Co-Founder,

Member of the Board

David has a background as an entrepreneur in the entertainment industry. He also was a partner at global consulting firm McKinsey & Company, where he advised international companies for 13 years.

 

In his free time, David is an avid waterskier, cyclist and golfer. He holds a Masters Degree in Quantitative Economics from the University of St. Gallen, Switzerland.

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Phillip Fu

Chief Technology Officer

Phillip has over 20 years experience in leading global technology and business process transformations at a number of distinguished enterprises (PwC, UBS, Credit Suisse). Additionally, Phillip was the CTO for a technology start-up. 

 

Phillip enjoys travelling, football and videography. He holds a Masters of Computer Science as well as a joint Executive MBA from the Rotman School of Management in Toronto & University of St. Gallen, Switzerland.

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Ilona Hackebeil

Chief Finance Operations Officer

Ilona has a long track-record as an executive - especially in the area of Finance. She has successfully completed over 100 projects in industry and commerce in the area of finance as a management consultant.

In her spare time, Ilona enjoys hiking, singing in a choir and going on culinary trips. Ilona holds an IHK degree in hotel management and a degree in business administration from the University in Bielefeld.

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Oliver Woehrmann

Chief Construction Officer

Oliver has more than 35 years of experience in the execution of large construction projects (including at Bilfinger SE and Implenia AG), which he managed with overall responsibility as senior project manager.

In his free time, he regularly plays sports, enjoys traveling and is active as a rescue diver.

Oliver has two master craftsman titles, studied business administration and holds a degree in business law from the University of Applied Sciences for Economics and Management in Essen. 

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Sara Radonic

Executive Assistant

Sara has worked at companies in multiple industries. Before joining Greenreb, she was with a fast-growing sports chain, a specialized construction company and a leading audit firm.

 

When she is not working, she likes to paint, enjoy the outdoors and travel to warmer destinations. She concluded an apprenticeship with an advanced diploma.

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Eric Grob

CFO, Co-Founder,

Member of the Board

Eric has founded and managed several businesses, including a Swiss real estate development company. He was a partner at McKinsey & Company for 12 years.

 

Eric is a long-distance runner and enjoys sports overall, including e-sports in which he competes frequently. He holds a Masters Degree in Business Administration from the University of St. Gallen, Switzerland.

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Patrick Davis

Chief Operating Officer

Patrick has a strong background in hospitality, where he has held several senior leadership positions with The Cosmopolitan of Las Vegas and the Mandarin Oriental Hotel Group.

He has a diploma in Hotel Business and Management from the Chamber of Commerce and Industry in Germany. In his free time, he likes to ride his motorcycle and enjoys outdoor activities, such as mountain-biking and hiking with family and friends.

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Katharina Lissowski

Chief Marketing Officer

Katharina is a full-stack marketeer with extensive experience in D2C & B2B marketing. Recently, she was part of the leadership team that sold a German D2C scale-up to Henkel AG for more than €300m. 

 

Katharina holds a Masters degree in Marketing from EBS Business School, Oestrich-Winkel. In her spare time she enjoys spinning classes & long-distance bike trips through Europe.

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Stefan Ebermann

Expansion Manager

Stefan was responsible for sales and business development at a global entertainment and e-sports company. Before that he held roles at Amazon and BMW.

 

In his free time, Stefan follows his passion for golf and cross-fit. He holds a Masters Degree in Business Administration from the University of Innsbruck in Austria.

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Claudio Feser

Chairman of the Board

Claudio is a Senior Advisor to McKinsey & Company, where he was a Director and board member. He is a member of the Executive Education Committee of the University of St. Gallen and the author of various books on leadership.

 

In his free time, Claudio is a competitive tennis player and producer of wine and food in the Piemont region. He holds an MBA from Insead. 

David has a background as an entrepreneur in the entertainment industry. He also was a partner at global consulting firm McKinsey & Company, where he advised international companies for 13 years.

 

In his free time, David is an avid waterskier, cyclist and golfer. He holds a Masters Degree in Quantitative Economics from the University of St. Gallen, Switzerland.

OVERALL TEAM

We employ talented associates in various functions across the entire company group

300+

Employees

45%

Women

24

Nationalities

16-60

Age range

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