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The LUMAS Team

Since it was founded in 2003, LUMAS has grown into an engaged, international team that has made the brand one of the undisputed specialists for high-quality art editions. These days, there are over 300 art and photography enthusiasts working at LUMAS. Find out more below about the great minds behind The LUMAS Concept.


Managing Directors

Bernd Stadlwieser

Bernd Stadlwieser

Bernd Stadlwieser is the Group CEO of Avenso GmbH. He began his career at Swarovski, where he rose all the way to the position of Vice-President. He has also previously served as the Group CEO of Thomas Sabo, one of the most successful international jewellery labels. Bernd Stadlwieser has over 20 years of international experience in business management, business development, retail, e-commerce, and international expansion.

Christoph Oberhaus

Christoph Oberhaus

Christoph Oberhaus has been the CFO of Avenso GmbH since March of 2015. With an educational background in business economics, he has worked as a Project Manager at Boston Consulting Group and in the Finance and Business Development departments at Karstadt Quelle Group. Additionally, he was accountable for two subsidiaries of Media Saturn Group for six years, with responsibilities spanning Finance & Controlling, IT Procurement, Human Resources, and Operations.

Alexander Nieswandt

Alexander Nieswandt

An Executive Partner in the Sander companies since 1994, trained photographer Alexander Nieswandt founded the specialist photo lab Icony Media GmbH in 2007 as a wholly-owned subsidiary of Avenso GmbH. The lab that grew out of that – the renowned WhiteWall lab – is now available to all photographers who value the highest quality. Satisfied clients include the LUMAS galleries and LUMAS artists. As one of the managing directors at Avenso GmbH, Nieswandt supervises the Production, IT, and Customer Service departments.


The Founders of LUMAS

Stefanie Harig

Stefanie Harig

In 1995, Stefanie Harig founded a PR agency: Die Brücke Public Relations GmbH, which counted federal ministries, Mercedes-Benz, McKinsey & Company and Deutsche Bahn among its clients. After four years, she sold her stake to SMYLE GmbH to focus on her passion for architecture, art, and design and to work as an Interior Designer and Art Consultant. A passionate art collector, she founded LUMAS in 2003 to make high-quality editions affordable for young collectors and a broad, art-loving public.

Marc Alexander Ullrich

Marc Alexander Ullrich

At 18 years of age, Marc Ullrich founded Rainbow Arts Software GmbH. Just a few years later, he sold the business and his shares in it to Softgold GmbH. In 1992, Ullrich became a member of the board of directors at ESCOM AG. In later work as a consultant, his clients included 1&1, HP/Compaq, and IBM. In 1997, he helped grow STRATO AG. After two years, he sold his shares and went on to livingNet AG, where he turned internet presences into professional marketing. As a founder of Avenso GmbH, he has made the world of photo art accessible to everyone who is excited about art.