ON:SUBJECT is a consultancy with a difference. Our mission is to help you thrive on a healthy planet. We work with organizations addressing complex sustainability issues and seemingly intractable communications challenges.

Together with you, we design processes that lead you step-by-step closer to your goal. Our solutions build on the greatest communications tools of our time: the internet – and human ingenuity. We work in collaboration with expert communicators, facilitators and designers to meet your needs.

Our specialties: inspiring communications, engaging meetings, powerful projects – online and offline.


Multi-stakeholder processes ++ Sustainability standards ++ Virtual collaboration ++ Communications strategy ++ Biodiversity conservation ++ Participatory strategic planning ++ Digital rights


Wiebke Herding, Managing Director

Martin Gilbraith workshop-2428Wiebke’s guiding question is: How can we collectively work towards a better world? For the past fifteen years, this exploration has led her to campaign with social movements, serve as head of communications for international environmental organizations and as consultant working for the UN, the EU and big business. Today, she specializes in the collaborative design of change processes towards sustainability.

Originally from Northern Germany, her journey has taken her from a MSc in Computer Science from the University of Edinburgh and studies at the Chartered Institute of Marketing to Brussels and Amsterdam where she continued her education as a coach, Certified Professional Facilitator and practitioner in the Technology of Participation.


→ Wiebke Herding on LinkedIn

Partners and Collaborators

Fabiola Benavente

Fabiola is a communicator and community builder that bridges countries and cultures. Originally from Chiapas, Mexico and now based in Belgium, her gift is in fostering a deeper connection to self, others and the world through visual communication, purposeful marketing and mentoring.


Arlene Birt

Arlene is a visual storyteller, information designer and educator whose work focuses on the visualization of sustainability. Her work visually explains ‘background stories’ to help individuals connect emotionally to complex concepts.


Maartje Gorte

Maartje is our go-to person for copy-editing and proofreading and proper use of the English language in general. She’s got a particular talent for making technical language and complex circumstances accessible and understandable.


Edward Kellow

Edward loves learning, and he shines when designing creative learning processes, be it on sustainability, systems thinking, leadership or change. He brings his willingness to experiment with new formats, his ability to blend online and offline spaces and his skill in hosting challenging conversations with ease and humour.


Lara Schmelzeisen

Lara is one of our favourite co-facilitators. She writes: “I believe that human connection and conversation is precious. I believe that we all deserve more play, fun and colour in the world of work. I believe that appreciative listening is the key to creating the future we want.” More often than not, you can find her with colourful pens and paper – listening and drawing conversations.


Karen Schmidt

Karen is a whirlwind of ideas and enthusiasm. With her background in e-learning, project management and change facilitation, her mission is to bring joy to complex challenges and organizations. Her newest project: The project canvas game – a playful approach to project planning in groups.