Every year produces its share of headlines about disruption and innovation. Most of it fades fast. But every so often, a handful of people come along whose work actually holds up, work that changes how an industry operates, not just how it markets itself.
That’s the thread running through this list. The Top 5 Leaders Making an Impact in 2026 here come from very different worlds: international law, urban sustainability, ESG investing, premium beverages, and global trade and development. On paper, they have almost nothing in common. Look a little closer, though, and a pattern emerges. Each one saw a gap that others had overlooked, built something to fill it, and stuck with it long enough for the results to speak for themselves.
From a Rome-based attorney shaping the future of citizenship and global mobility to an entrepreneur turning waste into living green walls that cool entire cities, these are people whose decisions ripple well beyond their own boardrooms. In 2026, their influence is impossible to ignore.
Here’s a look at the top 5 leaders making a real impact this year and what sets each of them apart.
Top 5 Leaders | Revolutionizing Industries & Making an Impact
1. Nahid Hayoun | Architect of Global Investment and Strategic Partnerships
Nahid Hayoun is an international strategic leader operating at the intersection of global investment, diplomacy, and economic transformation. With over two decades of experience, contributing to projects and investment initiatives valued at over USD 12 billion, she has established herself as a key figure in global partnership structuring, connecting governments, sovereign capital, and global institutions across Europe, the GCC, MENA, Asia, and Africa.
As President of Hayoun Group and CEO of Phoenix Linked, she leads initiatives that enable cross-border collaboration and large-scale development projects across sectors including infrastructure, energy transition, smart cities, healthcare, and industrial development. Her work focuses on mobilising capital and aligning stakeholders to deliver sustainable, long-term economic impact.
A central pillar of her strategy is advancing the transformation of emerging markets, particularly in Arab and African economies, from consumption-driven models to production-led growth. By facilitating industrial development, manufacturing expansion, and strategic investment flows, she supports nations in building resilient and self-sustaining economic ecosystems.
Hayoun is recognised for her ability to structure complex initiatives involving governments, trade ministries, chambers of commerce, family offices, and institutional investors. Her expertise in public-private partnerships, governance frameworks, and international regulatory alignment ensures projects meet global standards and deliver stability and investor confidence.
She is also the founder of AAIISummit (Arab Africa Industry Investment Summit), a high-level platform held under ministerial and royal patronage. Through this platform, she convenes government leaders, sovereign investors, and global stakeholders, facilitating strategic agreements across more than 30 countries and strengthening international cooperation.
The platform is positioned to unlock multi-sector investment opportunities, with projected deal pipelines and facilitated engagements expected to reach several billion dollars across infrastructure, manufacturing, and sustainable development sectors.
Beyond economic development, Hayoun is active in global sports investment and football ecosystem initiatives, contributing to youth empowerment and international collaboration through engagement with leading sports institutions.
With a strong focus on connecting capital with opportunity, Nahid Hayoun continues to play a leading role in shaping strategic partnerships and advancing sustainable economic growth.
2. Vassilis Kalantzis’ Vision to Redefine Premium Beverage Sector
The cornerstone of every society is communication between people. It is a natural need but also a prerequisite for people to move forward. The HoReCa sector plays a significant role and helps people come closer together. From the quality of each society’s HoReCa sector, not just the material but the human aspect, one can see the magnitude of its civilisation. This was something that fascinated Vassilis from the very beginning of his career, leading him to work with HoReCa venues in the centre of Athens, including En Delfois, Manteio, and Mommy’s, creating new trends and concepts in the industry. He reflects, “It was there that I was able to understand and learn the market, its massive potential, and its constantly evolving opportunities. A living organism that mutates daily.”
In early 2009, Vassilis decided to establish an import and distribution company with a focus on premium spirits, called Granikal. Together with the co-owner, Alexia Miteko, he managed to establish the brand in the industry as a dynamic and pioneering choice in Greece, covering the entire country. However, his search for creation and innovation never remained limited to building Granikal.
Eventually in 2014, together with George Bagos, George Tsirikos, and Dimitris Dafopoulos, Vassilis created Three Cents, a premium mixer brand. The brand’s most important innovation, the pink grapefruit soda, is a pioneering product of Three Cents, quickly making it a favourite among consumers, and even every competitor has adopted it. “In Greece”, Vassilis adds, “we very quickly became the most popular soft drink, and at the same time, exports began immediately. There were continuous travels and trade shows to support the product, alongside meetings with distributors.”
By creating something completely new in what was already a brand-new category, Vassilis has transformed the entire market over the last decade. He shares, “During this period, I met people from every level of the industry. Lambros and Damianos Papakonstantinou, with their entry into Three Cents, provided the right momentum for us to reach the acquisition of the company by Coca-Cola Hellenic in 2022. This was a reward for our hard work but also a commitment to even greater successes. Today, I work as a business development director, striving to pass on the Three Cents spirit across the globe.”
With the best quality natural ingredients and no preservatives, Vassilis Kalantzis is reshaping the premium beverage sector through Three Cents, and Granikal.
3. Christoph M. Klein | Pioneering Sustainable Investment and Delivering ESG Impact in Global Finance
Christoph M. Klein, CFA, CEFA, is founder and managing partner at ESG Portfolio Management GmbH, a Frankfurt-based asset manager dedicated to embedding the United Nations Sustainable Development Goals into investment funds and segregated accounts. With over two decades of experience in fixed income, credit, and multi-asset portfolio management, Christoph has built a firm that stands at the forefront of responsible investing globally.
Founded in 2018, ESG Portfolio Management has earned recognition from some of the most respected bodies in sustainable finance, including the Principles for Responsible Investment, which named the firm a global leader in responsible investing and elected it to its 2020 Leaders’ Group. Christoph’s funds have received the Sustainable Investment Award in 2020 and 2023, the ESG Investing Award for Best Fixed Income Investment Fund in 2021, and the Best Multi-Asset Investment Fund Award in 2024. Most recently, he was recognised with the German Sustainability Award 2025. A prolific author and educator, Christoph also designs and delivers seminars and webinars for Fitch Learning, Frankfurt School of Finance and Management, Moody’s Analytics, and DVFA, shaping the next generation of ESG-conscious investment professionals.
Christoph began his career as a private banking investment analyst at Deutsche Bank before managing corporate and convertible bond portfolios at Deutsche Asset and Wealth Management. In 2000, he served as a visiting scholar at the Salomon Center for the Study of Financial Institutions at New York University. He subsequently worked as a multi-strategy portfolio manager for credit hedge funds at CPM Advisors in London before joining TriPoint Asset Management as Partner and Head of Fixed-Income Credit. He rejoined Deutsche Asset Management in 2007, serving as Portfolio Strategist, Head of ESG Credit, and Managing Director, before serving as Partner and Portfolio Manager at nordIX AG and eventually founding ESG Portfolio Management GmbH in 2018.
Beyond portfolio management, Christoph is deeply engaged in shaping the standards of sustainable investing. He is a member of the DVFA Sustainable Investing Commission and the CFA ESG Technical Committee and previously served on the UN PRI Fixed Income Working Group. He currently participates in the UN PRI Plastic Working Group. He teaches courses for analysts and portfolio managers at DVFA, the European Business School, the Frankfurt School of Finance and Management, and Moody’s Analytics and holds a diploma in business administration from the University of Trier. His published works span ESG integration, credit risk analysis, and fixed income strategy, with contributions to the CFA Institute Conference Proceedings, the Handbook of Finance (Wiley & Sons), and multiple publications on credit derivatives and sustainable investment.
4. Gerrit Pul | Building a Greener Legacy Through Innovation and Purpose
“Profit is important, but purpose is essential. We do not inherit the planet from our parents; we borrow it from our children.” — Gerrit Pul
For Gerrit Pul, Founder and CEO of CO2Wall, sustainability has never been just a business opportunity; it is a lifelong mission rooted in family values and a deep respect for nature. Growing up, Gerrit was inspired by both his grandfather, who served as a senior leader within the Dutch Forestry Service (Staatsbosbeheer), and his father, a highly respected forestry expert who dedicated his life to preserving and maintaining healthy forests. Their commitment to protecting natural ecosystems shaped Gerrit’s worldview from an early age and taught him that true success is measured not by financial gain alone but by the positive legacy we leave for future generations.
Driven by this philosophy, Gerrit founded CO2Wall with a clear vision: to create practical, scalable solutions that help cities become greener, healthier, and more resilient. Rather than simply adding vegetation to buildings, CO2Wall transforms waste materials into intelligent, AI-driven living green façades and rooftop ecosystems. The company’s technology combines circular economy principles, advanced software, smart irrigation systems, and nature-based solutions to reduce urban heat, improve air quality, enhance biodiversity, and lower energy consumption. Every project is designed with one objective in mind, to create measurable environmental impact while delivering long-term value to communities.
Under Gerrit’s leadership, CO2Wall has grown from a bold vision into an internationally recognised sustainability innovator. The company is now active across multiple regions worldwide, with a strategic focus on the United Arab Emirates, Saudi Arabia, and other hot-climate markets where urban heat and water efficiency represent some of the greatest environmental challenges. Through its proprietary AI-driven technology and extensive research and development efforts, CO2Wall has successfully demonstrated that large-scale green infrastructure can thrive even under some of the world’s most demanding climatic conditions.
This commitment to innovation and impact has earned Gerrit and CO2Wall numerous recognitions and sustainability awards. Most recently, the company was named 2nd Runner-Up in the prestigious Dubai Holding Innovate for Tomorrow Challenge 2026, competing against innovative companies from around the world, an achievement that further validated CO2Wall’s vision and highlighted its potential to contribute to the future of sustainable urban development across the Middle East and beyond.
Looking ahead, Gerrit remains focused on a purpose that extends far beyond business growth. His ambition is to help shape cooler, healthier, and more sustainable cities while proving that technology and nature can work together to solve some of the world’s most pressing environmental challenges. Inspired by the lessons passed down through generations, he continues to build not just a company but a legacy, one designed to create lasting value for people, cities, and the generations that will follow.
5. Raffaella Lauricella | Championing International Law, Citizenship, and Global Mobility
Raffaella Lauricella is an Italian attorney, author, and international legal strategist and the founder of Studio Legale Raffaella Lauricella, with offices in Rome and Milan. With a practice built over more than a decade of rigorous work alongside public entities, private clients, and international institutions, she has established herself as a trusted authority in administrative law, immigration, citizenship, military law, family law, and the protection of fundamental rights. Her approach combines legal precision, strategic foresight, and a close analysis of each client’s specific circumstances, qualities that have earned her recognition across professional, institutional, and media circles alike.
Raffaella advises a diverse clientele that includes entrepreneurs, investors, highly skilled professionals, international families, and globally mobile individuals navigating the complexities of cross-border legal matters. Over the course of her career, she has represented members of the armed forces in cases of significant legal weight, supported institutions including ANCI, and provided targeted advisory to public figures and institutional leaders, handling each matter with the confidentiality and reputational sensitivity it demands. She also extends specialised advisory to VIPs and high-profile individuals, ensuring comprehensive legal coverage across both personal and professional dimensions.
Her practice is backed by a solid network of collaborators and professionals, enabling her to deliver timely, full-spectrum legal support across Italy and at the European level. Recognised as an authoritative voice in the fields of citizenship and international mobility, Raffaella is known for combining legal excellence with a deep understanding of the economic, institutional, and social dynamics shaping the future of global opportunity. Her practice areas extend to public competitive examinations, AI-related legal matters, and the emerging intersection of technology and law, reflecting a forward-looking vision of the legal profession as a driver of economic growth, individual freedom, and institutional innovation.
Throughout her career, Raffaella has participated in institutional dialogues and high-level discussions on European integration, international mobility, governance, and the evolution of rights, contributing her expertise to thematic forums and initiatives connected with European institutions, including events associated with the European Parliament. She has also submitted written contributions to the Italian Chamber of Deputies on matters of legislative relevance, demonstrating her commitment to shaping policy as well as advising on it. Her work has attracted the attention of international organisations, public institutions, and media outlets, including a featured article on CEOWORLD Magazine, which have recognised her innovative and forward-looking approach to legal and social transformation.
As an author and public speaker, Raffaella promotes a modern vision of law as a tool for economic growth, individual freedom, international cooperation, and social progress. She contributes to the international debate on citizenship, migration, mobility, and institutional innovation, helping shape the future of rights and opportunities in an increasingly interconnected world.
Connect with Raffaella Lauricella on LinkedIn and Instagram, and learn more about Studio Legale Raffaella Lauricella at studiolegalelauricella.com.
What Connects Them
Read these five profiles back to back, and a few things stand out. None of these leaders inherited a finished playbook. They built their own, often in industries that weren’t asking for change.
There’s also a shared instinct toward long-term thinking. Gerrit Pul talks about legacy, not quarterly earnings. Christoph Klein has spent over two decades pushing sustainable finance into the mainstream, well before it became a buzzword in boardrooms. Raffaella Lauricella’s work on citizenship and mobility focuses on decisions that shape people’s lives for generations, not on headlines for a news cycle.
And then there’s the cross-border thread. Nahid Hayoun connects governments and capital across continents. Vassilis Kalantzis took a Greek soft drink global. Lauricella advises clients navigating legal systems across multiple countries. None of these careers fit neatly inside one market or one set of rules, and that’s exactly the point. The leaders shaping 2026 aren’t thinking about borders. They’re thinking in networks.
Conclusion
What ties these Top 5 Leaders Making an Impact in 2026 together isn’t a shared industry or a shared title. It’s a shared refusal to settle for “good enough”. Each of them looked at a system – legal, financial, environmental, commercial, or diplomatic – and decided it could work better, then spent years proving it.
That’s worth paying attention to. Not because any of these leaders are chasing recognition, but because the changes they’re driving will outlast the news cycle that covers them. Cities will be cooler because of work like Gerrit Pul’s. Investment portfolios will be more accountable because of people like Christoph Klein. Families navigating international borders will have clearer paths because of attorneys like Raffaella Lauricella.
2026 is still unfolding. But if this list of top 5 leaders is any indication, the people making the biggest impact this year aren’t the loudest voices in the room. They’re the ones who’ve been doing the work all along and are just getting started.
Read more:
Maria Bondarenko: Bridging Technology, Business, Art, and Human Potential
Sylvain Zurcher: Transforming Maritime Infrastructure with Sustainable Solutions
