Global Sustainability Leadership Roundtable
Elevating Impact, Purpose Culture, and Business Value
16 Senior executives | By invitation
8 October 2026 | Inaugural Cohort
Pulitzer Hotel | Prinsengracht Canal | Amsterdam
To create a more peaceful and flourishing future, it is only becoming more urgent to grow the most powerful solutions to our key global issues. This Roundtable is an invitation-only strategic dialogue convening 16 senior leaders with an ambition to drive high-impact and high-value strategies and be at the forefront of sustainable business.
Purpose
The Roundtable aims to build a trusted network of sustainability leaders to deepen collective insight, sharing of best practices as well as lessons learned, and generate practical, actionable outcomes to:
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Accelerate impact on key global issues.
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Strengthen a purpose-driven culture.
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Turn efforts into stronger business value.
What makes it distinct
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Valuable outcomes: A small group curated for mutual value, conversation designed for strong, actionable outcomes.
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Unique strategic framework: Unifying and simplifying the broader impact spectrum, focusing on high-impact, high-value.
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Actionable outcomes: Key insights, small 'quick wins' and big ideas to elevate impact, engagement, and business value.
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Collaborative leadership: Strengthen cross-sector collaboration and co-creation.
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The dialogue is guided by our research-backed framework based on global best practices, Forbes-praised tools, and Cambridge University-endorsed insights, unifying rising demands and enabling focus on high-impact, high-value.​​
Global Sustainability Leadership Roundtable
Pulitzer Hotel | Amsterdam
8 October 2026
Participation
This Roundtable brings together 16 senior executives with complementary expertise, and ambition to be at the forefront of creating a truly better future, and strategic advantage. Participation is by invitation only to ensure a rich diversity of perspective and mutual value.
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We ask that each participant brings a willingness to share insights and lessons learned as to what has worked well and less well in their experience. The Chatham House Rule will apply, with attendees free to use information from the conversation, while keeping affiliation confidential.
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​This inaugural Roundtable marks the beginning of a series of dialogues, building a collaborative platform to deepen collective insight, amplify business value and accelerate the much-needed impact on our future.
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Participation fee (incl. venue, dinner and drinks, insights report, preparation and facilitation)​: £760 / €880 p.p. ​
To request an invitation or nominate a peer please email us at hi@BigTreeGlobal.net.
3-5 PM Facilitated Strategic Dialogue
Key insights, best practices and lessons learned.
5-8 PM Drinks & Dinner
Build meaningful connections in a relaxed setting.
Concise Insights Report
Main insights and recommended actions to elevate impact, purpose culture, and business value.
Facilitated by
​The Roundtable is convened by Dr Melanie van de Velde, Founder of Big Tree Global, TEDx speaker, and author of Lead Like a Genius, described by Forbes Books as “A Powerhouse for Sustainable Growth". Melanie is recognised for her research into what sets global best-impact strategies apart, awarded the Adam Smith Prize for PhD Excellence, nominated by the Social Innovation Director at Cambridge University.
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Drawing on her research and two decades of experience across business leadership and sustainability strategy, Melanie works with global organisations to move beyond compliance and unlock higher-impact, value-creating sustainability initiatives.
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​Her journey from tech leadership to empowering women in a Nairobi slum, has reinforced that many solutions to tackling the biggest issues we face lie in the hands of business. And that impact and business value thrive through collaboration and focusing on effective impact strategies.
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​​​This Roundtable is designed to bring these forces together. It is an invitation to unite in amplifying impact so that we will truly evolve to a brighter future.