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Aaron Maltais

Program Director
Phone: +46 76 137 8683


Aaron Maltais is a Senior Research Fellow at Stockholm Environment Institute (SEI) and is co-research director at the Stockholm Sustainable Finance Centre. Aaron holds a PhD in political science. His academic research has focused on the international cooperation and political economy challenges climate change has generated and their implications for just and effective climate governance. At SEI Aaron has worked on policy-oriented research on international trade and sustainable development, international environmental policy integration, and environmental security. 

His current work focuses on green bonds, green finance and the political economy of transitions to sustainability, implementation of the Sustainable Development Goals and the Paris Agreement, and decarbonisation of heavy industry. Aaron also has expertise in normative theory and has done work on global justice, human rights, legal theory, and democratic theory.

Emma Sjöström

Deputy Program Director
Phone: +46 70 536 04 22 


Emma Sjöström (PhD) is managing the Sustainable Finance research platform at Misum, SSE. She has conducted research on sustainable investment since 2003, and has published a number of books, teaching cases and academic articles on the topic. Currently, her research is focusing on shareholder engagement and on longtermism in the investment analysis. Based on her experience, Emma is also acting advisor to asset owners and asset managers, and has served as an expert on two public inquiries related to sustainable finance.

Gregor Vulturius

Head of Operations and Engagement
Phone: +46 73 460 48 51


Gregor Vulturius is a Head of Operations and Engagement. He has a background in spatial planning, climate change adaptation and mitigation and disaster risk management. In the SSFC he is leading research and market dialogue on long-term investment analysis and policy including the EU´s Sustainable Finance Action Plan. He is also engaged in the executive education program of the centre.
Since 2017, Gregor has been part of the Expert Network of Second Opinions on Green Bonds (ENSO). His work in the network includes assessing and rating green bond frameworks of financial institutions, municipalities and commercial companies in accordance with the Green Bond Principles of the International Capital Market Association (ICMA).
Gregor has also been involved in research and policy outreach for the New Climate Economy project, the SENDAI Framework on Disaster Risk Reduction of the UNISDR and the Warsaw Mechanism on Loss and Damage associated with Climate Change under the UNFCCC.

Johan Nordlund

Responsible Executive Education
Phone: +46 70 812 42 44


Johan Nordlund is a Program Director at the Stockholm School of Economics Executive Education. He designs and teaches executive programs there, and provides advisory services to financial firms. His main subject areas are asset management, fixed income and household finance. He is also particularly interested in sustainable finance and works with both open enrolment programs on that subject as well as with customized programs such as the Green Bonds Executive Program, held in cooperation with the International Finance Corporation (IFC). Johan has a master’s degree in Business and Economics and is a Certified European Financial Analyst (CEFA).

George Marbuah

Responsible Research Fellow
Phone: +46 72 542 1807


George Marbuah is a Research Fellow at Stockholm Environment Institute (SEI).
For SSFC, George works on innovative research ideas related to projects on sustainable finance in scaling-up available development capital in developing countries to achieve the sustainable development goals (SDGs) and meeting targets set forth in the Paris Agreement.

George worked as a post-doctoral research fellow at the Department of Economics, Swedish University of Agricultural Sciences (SLU) in Uppsala prior to joining SEI. At SLU, he worked mainly on policy-oriented empirical research. He is particularly interested in the intersections of development economics, environment, natural resources management, and energy. Questions of economic growth and macro-fiscal policy in resource-rich countries in sub-Saharan Africa in particular and developing economies in general are also of particular interest to him. 

George holds a PhD in Economics from SLU.

Maria Cole

Communications Lead
Phone: +46 70 224 2022


Apart from heading communication for SSFC, Maria Cole works as Communications Officer at the Stockholm Environment Institute, supporting research projects on climate change and sustainable finance with strategic planning and delivery of professional communication and policy engagement activities.

Maria has extensive experience in international communication focusing on external relations, public affairs and international marketing within several industries.

Prior to SEI, Maria worked at GSK where she held a position as External Communications and PR Manager for the Nordic and Benelux area. Here Maria was heading the communications function, managing external communication and public affairs for GSK Consumer Healthcare. Maria has also worked as Global Brand Manager at Galderma and she has held several positions in communications within research driven organisations in the intersection of academia, public policy and business. She has special expertise in developing and implementing impactful communication-, stakeholder engagement-, and CSR plans for high-performing global companies and well-known global brands.

Heidi Tuhkanen

Senior Expert
Phone: +358 445 750 259


Since joining SSFC, Heidi has focused on green bonds - assessing their potential for bridging the adaptation finance gap, as well as analysing issuer related impact reporting. Since 2016, Heidi has been part of the Cicero-led Expert Network on Second Opinions (ENSO). Her work in the network includes assessing and rating green bond frameworks of financial institutions, municipalities and commercial companies in accordance with the standards set by Green Bond Principles of the International Capital Market Association (ICMA) and the CICERO Shades of Green. Heidi’s broader work relates to governance/decision making, climate issues, supply chain governance, urban infrastructure, as well as the interaction between the private sector, society, and the environment. 

Heidi holds a Master´s degree in Urban Environmental Management (MSc) from Wageningen University (NL) and is currently working on her PhD at University of Helsinki.
If you would you like to collaborate with us or find out more about what we do, please do not hesitate to get in touch with us at For specific topics or questions, please contact the respective team member.