Nautilus consulting has been founded by Stefan Kastenmüller in 2013.
Stefan held executive roles in entertainment & sports companies incl. WWE, Disney, Viacom MTV, Freemantle/UFA, Ringier and Phillip Morris. As entrepreneur he has been founding ´ founded numerous companies in the past like Katze productions in London and the digital agency argonaut with numerous outlets across Europe.
Sesame Workshop is the nonprofit media and educational organization behind Sesame Street.
Nautilus Consulting developed Sesame Workshop’s European strategic brand and commercial expansion to deliver long-term growth and sustainability. Sesame Workshop is the non-profit educational organization behind Sesame Street.
Founding a European entity, office, and team overseeing all lines of business, including Programming, Sales and Distribution, Production of new IP, Consumer Products, Marketing, themed entertainment, and impact initiatives.
We supported the implementation of Sesame Workshop’s Ukraine Initiative to support children in education and well-being.


Overseeing all lines of business of World Wrestling Entertainment in the EMEA region.
Focusing on Media Sales and Distribution of key programming RAW and SmackDown. Supporting subscriber growth of the WWE Network, including the Pay Per View partnerships across Europe. Consumer Products and Merchandising with local teams in the UK, Mainland Europe, and the Middle East.
Live Event strategy and execution across the EMEA region. Promotion and Marketing for more than 40 events per year with special touring in Africa and Europe.



Sesame Workshop is the nonprofit media and educational organization behind Sesame Street.
Nautilus Consulting developed Sesame Workshop’s European strategic brand and commercial expansion to deliver long-term growth and sustainability. Sesame Workshop is the non-profit educational organization behind Sesame Street.
Founding a European entity, office, and team overseeing all lines of business, including Programming, Sales and Distribution, Production of new IP, Consumer Products, Marketing, themed entertainment, and impact initiatives.
We supported the implementation of Sesame Workshop’s Ukraine Initiative to support children in education and well-being.


Sesame Workshop is the nonprofit media and educational organization behind Sesame Street.
Nautilus Consulting developed Sesame Workshop’s European strategic brand and commercial expansion to deliver long-term growth and sustainability. Sesame Workshop is the non-profit educational organization behind Sesame Street.
Founding a European entity, office, and team overseeing all lines of business, including Programming, Sales and Distribution, Production of new IP, Consumer Products, Marketing, themed entertainment, and impact initiatives.
We supported the implementation of Sesame Workshop’s Ukraine Initiative to support children in education and well-being.


Sesame Workshop is the nonprofit media and educational organization behind Sesame Street.
Nautilus Consulting developed Sesame Workshop’s European strategic brand and commercial expansion to deliver long-term growth and sustainability. Sesame Workshop is the non-profit educational organization behind Sesame Street.
Founding a European entity, office, and team overseeing all lines of business, including Programming, Sales and Distribution, Production of new IP, Consumer Products, Marketing, themed entertainment, and impact initiatives.
We supported the implementation of Sesame Workshop’s Ukraine Initiative to support children in education and well-being.


Sesame Workshop is the nonprofit media and educational organization behind Sesame Street.
Nautilus Consulting developed Sesame Workshop’s European strategic brand and commercial expansion to deliver long-term growth and sustainability. Sesame Workshop is the non-profit educational organization behind Sesame Street.
Founding a European entity, office, and team overseeing all lines of business, including Programming, Sales and Distribution, Production of new IP, Consumer Products, Marketing, themed entertainment, and impact initiatives.
We supported the implementation of Sesame Workshop’s Ukraine Initiative to support children in education and well-being.








Sesame Workshop is the nonprofit media and educational organization behind Sesame Street.
Nautilus Consulting developed Sesame Workshop’s European strategic brand and commercial expansion to deliver long-term growth and sustainability. Sesame Workshop is the non-profit educational organization behind Sesame Street.
Founding a European entity, office, and team overseeing all lines of business, including Programming, Sales and Distribution, Production of new IP, Consumer Products, Marketing, themed entertainment, and impact initiatives.
We supported the implementation of Sesame Workshop’s Ukraine Initiative to support children in education and well-being.



Branded entertainment has been pioneered by UFA brand communication, a subventure of UFA Film & Fernsehproduktion in Potsdam Babelsberg.
Brand message and value integration into various genres of content became a new way to reach the consumer. Storytelling around a brand started a new dimension in the customer journey.
Today, brand entertainment has become a natural and common part of the marketing and communication mix.

Overseeing all lines of business of World Wrestling Entertainment in the EMEA region.
Focusing on Media Sales and Distribution of key programming RAW and SmackDown. Supporting subscriber growth of the WWE Network, including the Pay Per View partnerships across Europe. Consumer Products and Merchandising with local teams in the UK, Mainland Europe, and the Middle East.
Live Event strategy and execution across the EMEA region. Promotion and Marketing for more than 40 events per year with special touring in Africa and Europe.




Branded entertainment has been pioneered by UFA brand communication, a subventure of UFA Film & Fernsehproduktion in Potsdam Babelsberg.

Branded entertainment has been pioneered by UFA brand communication, a subventure of UFA Film & Fernsehproduktion in Potsdam Babelsberg.
Nautilus Consulting is a management consulting company, supporting established companies and early stage start-ups to navigate through the challenges of digital transition, competition and a constant change in our media landscape.
In our work we commit ourselves to develop strategies for growth of your Intellectual property (IP), brand and business. At the same time we pursue a holistic approach including sustainability and social impact aspects. We are active in multiple industry sectors, whereas our main focus is in the sports-, entertainment,- and media industry.
We help you to grow your value chain across multiple regions based on an experienced network of consultants, located in EMEA, North- and South America and APAC.