Empowering businesses and people to adapt, succeed, and lead the process of change into the future.
Discover how we can help youDear Visitor,
In November 2019, proacteur decided to join forces with Nexum.
In response to the growing demand to support change projects, increasingly international in scope and diverse in nature, we sought a partner who shared the same ambition, vision and values.
With Nexum, we found a perfect match in geography, competencies, and above all, culture and values.
Together we are the reference company for change management in Europe.
Welcome to our new website!
Nexum
Why Change Management?
Change Management is the people side of any organisational change - whether you’re fixing problems, responding to market trends, or taking advantage of new opportunities

Change is happening in your organisation
When your organisation undertakes projects or initiatives to improve performance, seize opportunities or address key issues, they often require changes; changes to processes, job roles, organisational structures and types and uses of technology.
Why you need change management :
- Thrive in an ever-changing and agile world
- Close the gap between requirements and results
- Deliver the people dependent portion of project ROI
- Increase likelihood of project success
We are on a mission for you
Every business stands or falls on its capacity for change. And more specifically, on the capacity of its people to adapt along with it.
Which is why Nexum combines world-leading methodologies with fully customized training, coaching and advisory services. To drive the success of your strategic projects and ensure the results are adopted and used. To provide your business with a long-lasting competitive advantage.
And, in short, to empower you to take up the challenge of change. So your business and your people grow stronger, more adaptable, and more resilient. Because in order to change the future, change must first become part of the culture and identity of your organisation.
Our Solutions
We partner with clients to design and implement results-focused change management strategies.
We leverage Prosci solutions as the backbone of our approach, building on Nexum DNA and experience.
Client Success Stories
NEXUM and its parent company, Prosci, are spread over 28 countries
worldwide and deliver leading services in Change Management to clients
all over the world.
- 25+Years of Change Management research
- 100.000People trained and certified worldwide
- 80%Of Fortune 100 companies partner with Prosci