Meet our
Duval
Unionists
Working on the "EDGGE"
The Duval Union guiding principles set a standard for behavior and attitude within our workplace. They shape and fuel the culture of our work environment and ensure our long-term legacy.They help us drive performance, customer, stakeholder, and employee satisfaction and engagement.
Entrepreneurship
We approach challenges with an entrepreneurial mindset. We cherish the drive, imagination, and creativity that creates value and empowers effective business success. We pride ourselves on challenging the status quo with a can-do attitude and are not afraid of failing, as this is how we learn.
Decency
We behave with decency: we are respectful and act with integrity towards our clients, suppliers, and colleagues. We truly embrace fairness, equality and diversity because it does matter. It enriches us in who we are and helps us deliver greater creativity, new ideas and fresh insights.
Gusto
We work with gusto: we enthusiastically and vigorously enjoy what we do. Moreover, we believe that the rewards of working together and celebrating shared successes are deep and lasting.
Grit
We act with grit: with courage, tenacity, and perseverance. We are passionately engaged in our customers’ businesses, and make change happen more quickly and more effectively. We never walk away.
Excellence
We strive for excellence in everything we do. We focus on becoming better every day – growing our clients’ businesses, improving our organisation, the way we work, and our skills. We aim to develop the potential of others and to enable them to achieve more through our relationship. We all have a responsibility to influence others for good.
Our leadership team
Strategic visionaries driving greatness.
Our leadership team brings a wealth of experience and strategic vision to drive Duval Union’s growth and innovation. These leaders are at the forefront of guiding our teams and ensuring we deliver exceptional results for our clients.
12companies
A dynamic ecosystem of specialist firms delivering tailored solutions across marketing, design, and technology.
65+marketing specialists
A powerful team of strategists, creatives, and data-driven professionals dedicated to crafting impactful marketing solutions.
20+founders & leaders
Experienced innovators leading the charge, shaping the future of marketing and driving business transformation.
Our founders
Klaus Lommatzsch
Founding Partner
Klaus runs Duval Union as a Founding Partner. Klaus started his career in the advertising industry and worked for Quattro (which later became Saatchi), TBWA, and Duval Guillaume, where he served first as Managing Partner and later as Duval Guillaume’s CEO (as of 2009). He oversaw a period of rapid growth for the agency – a time during which the business grew from five to 250 employees while generating a gross profit at peak of c. €30 million and over €50m in sales. Under Klaus’ brinkmanship, Duval Guillaume won many awards, including 17 Effies, during a 10-year time span in total. A unique feature in the Belgium advertising scene. Between his role as CEO of Duval Guillaume and co-founding Duval Union, Klaus founded his own business – Dreams & Fears, offering research-based marketing strategy to blue chip clients.
Klaus runs Duval Union as a Founding Partner. Klaus started his career in the advertising industry and worked for Quattro (which later became Saatchi), TBWA, and Duval Guillaume, where he served first as Managing Partner and later as Duval Guillaume’s CEO (as of 2009). He oversaw a period of rapid growth for the agency – a time during which the business grew from five to 250 employees while generating a gross profit at peak of c. €30 million and over €50m in sales. Under Klaus’ brinkmanship, Duval Guillaume won many awards, including 17 Effies, during a 10-year time span in total. A unique feature in the Belgium advertising scene. Between his role as CEO of Duval Guillaume and co-founding Duval Union, Klaus founded his own business – Dreams & Fears, offering research-based marketing strategy to blue chip clients.
Marc Bresseel
Founding Partner, Board of Directors
Marc Bresseel began his career at IBM and later advanced at Microsoft, where he played a key role in launching online services like MSN, Hotmail, and Messenger in Belgium. As one of the early internet pioneers, he led sales and marketing for Microsoft’s online services in EMEA and later became Global CMO for Microsoft Advertising. After 16 years at Microsoft, he moved to IPG Mediabrands as VP, overseeing the top 14 markets. In 2014, Marc co-founded Duval Union, driven by his passion for creating value and scaling organizations. Outside of work, he’s a proud father and a dedicated olive farmer. Currently, Marc took up a challenging position as global CEO of Utiq but is still a director and shareholder of Duval Union.
Marc Bresseel began his career at IBM and later advanced at Microsoft, where he played a key role in launching online services like MSN, Hotmail, and Messenger in Belgium. As one of the early internet pioneers, he led sales and marketing for Microsoft’s online services in EMEA and later became Global CMO for Microsoft Advertising. After 16 years at Microsoft, he moved to IPG Mediabrands as VP, overseeing the top 14 markets. In 2014, Marc co-founded Duval Union, driven by his passion for creating value and scaling organizations. Outside of work, he’s a proud father and a dedicated olive farmer. Currently, Marc took up a challenging position as global CEO of Utiq but is still a director and shareholder of Duval Union.
Agency partners
We're hiring!
We are always on the lookout for bold thinkers, creative rebels, and analytical masterminds to join our network. If you want to grow your greatness, we want to hear from you.
Ready to grow your greatness?
Contact us today to find out how we can help your business grow.
