About Us

Natasha joined the Accountability Accelerator in early 2022 as the Executive Director to work on strengthening accountability architecture around corporate action on nature. This requires mobilizing funders and ensuring participatory grant support to organizations working on corporate accountability. Natasha spent most of her career working in the Global South and the emerging markets and has twenty-five years of experience in philanthropy, sustainability, and systems change. Previously, Natasha served as the Deputy CEO and Chief Strategy Officer at the King Khalid Foundation (KKF), a leading philanthropic institution in the MENA region, working on building the local civil society ecosystem and strengthening corporate ESG practices. Natasha started her career working on establishing microfinance banks in several Global South countries. Natasha holds a Ph.D. in Economic and Political Studies from Boston University, a Business Excellence degree from Columbia Business School, and a Law Degree from the University of Belgrade’s Law School. She is a Member of MIT Legatum Center for Social Entrepreneurship’s Advisory Group, AccountAbility’s Sustainability Standards Board, and Foundation20’s Steering Committee. Natasha resides in Washington, DC.

Randall joined the Global Commons Alliance in its infancy and helped design its initial governance. Early conversations with funders and partners made it clear that the GCA would need the tools and allies to ensure that companies act on their commitments to Nature. From this, the seeds of the Accountability Accelerator were planted in 2019. Since starting his career in the energy sector, Randall has been building business partnerships for a variety of sustainability interests over the past 15 years. While at the World Economic Forum, Randall helped start their work with the private sector on climate change in 2005 and, subsequently, their initiatives on sustainable consumption and circular economy. Subsequently, Randall has helped convene mayors at COP21, build a multi-stakeholder decarbonization initiative for the Global Maritime Forum, and shape a new narrative for Nature with the UN Development Program. Randall studied Mechanical Engineering and has an MBA from IESE Business School, and resides with his family in Geneva, Switzerland.

Seema has 25 years of experience working on corporate accountability from the legal, human rights, environment, and climate perspectives. Previously, Seema held director-level positions at leading not-for-profit organisations, including overseeing Stand.earth’s Fashion and IT campaign, Amnesty International’s global Business and Human Rights work, and six climate campaigns while at Global Witness. In these capacities, she led teams and created cutting-edge strategies relating to a just energy transition, supply chains, environmental justice and corporate crimes. Seema also worked for the United Nations based in Bangkok, where she implemented a regional environmental governance programme, and practiced as a lawyer in Canada. She holds a Master’s in International Law, Bachelor of Laws (JD equivalent), and Bachelor of Arts, as well as various board and advisory level positions.

Natasha has over 20 years experience working in Asia and the Global South. Natasha’s in-depth knowledge of Asia and its development over the last few decades has resulted in her successfully building partnerships across different sectors and regions. Previously Natasha led Synergos’s work in the region where she formed their Climate Collaborative, a global group with the purpose of bringing together philanthropic leaders to elevate successful action at a local level and explore how they might be shared and adapted in different parts of the world. She has consulted for the IFC World Bank and an Asian-based consulting firm, in these roles,she worked closely with the private, public, and NGO sectors on Asia-focused projects.Prior to which she was in the private sector at a boutique investment bank, UBS AG, and Sloane Robinson, a hedge Fund in London covering Asia and the emerging markets. She holds a MA in International Relations and a BA in History from the University of London SOAS and is currently based in Hong Kong.

Kajetan joined the Accountability Accelerator in October 2024 to lead the finance sector strategy. He is responsible for grant making and collaboration with finance sector stakeholders. A member of the Sustainable Finance Committee of the British Standards Institute contributing to ISO standards in Sustainable Finance. Until March 2024 he worked with UK fund manager Baillie Gifford on structuring the ESG integration process and building an offering of sustainable multi-asset and fixed income funds. During this time he was a member of the ISSB Investor Advisory Group. Prior to this he was the Programme Director for Sustainable Finance at the Cambridge Institute for Sustainability Leadership where he led the work with financial institutions across investment, banking and insurance, developing practical solutions to sustainable finance challenges. This work included impact measurement, transition and physical risk tools, climate disclosure frameworks, and clarifying the role of banks in low carbon transition. He has also worked on green securitisation and green bonds within Climate Bonds Initiative, helped build momentum for a deal at the Paris Climate Summit through the IIGCC, worked on transition risk within BMO Global Asset Management and built low carbon indexes for FTSE and S&P. He contributed to the EU’s High Level Expert Group on sustainable finance and the UK Green Finance Task Force, and has practical experience of applying both the TCFD and the TNFD. He holds an MSc in Carbon Management from the University of Edinburgh and an MSc in International Finance from the University of Lodz.

As of January 2025, Mariana is the new Programs and Grants Manager for the Accountability Accelerator, following her role as Coordinator since early 2023.

Originally from Brazil, she holds a bachelor’s degree in Architecture and Urban Planning from the Federal University of Rio de Janeiro (UFRJ), where she focused on sustainable development. She later completed a master’s degree in Resource Efficiency in Architecture and Planning at HafenCity University (HCU) in Hamburg, which strengthened her interest in environmental conservation and social equity.

Currently living in Hamburg, Germany, Mariana works on initiatives to foster accountability and sustainability.

Since February 2025, Carol has been serving as Financial and Administrative Coordinator at the Accountability Accelerator, where she contributes with dedication and purpose to advancing its mission. Carol is from Brazil and currently lives in Rio de Janeiro. She graduated in Biology from Universidade Gama Filho and is now pursuing a Master’s in Environmental Management Projects. Carol has built a career dedicated to connecting education, science, and conservation. Early in her journey, she worked as curator of the Herpetology Collection at the National Museum – UFRJ and contributed to taxonomy and amphibian conservation projects at Itatiaia National Park in Rio de Janeiro. For over 20 years, she devoted herself to education, inspiring children and young people to care for the planet, while also leading teams and developing innovative learning materials. Currently volunteering at Instituto Vasselo Goldoni (IVG), she mentors women through career development sessions, fostering greater gender equity in the workplace. Passionate about nature and animals, she believes in being an active part of the vital movement to preserve the environment for future generations.

Paola D. Luna is the Validation Director at the Accountability Accelerator, leading our science-based targets for nature validation service. Since joining in July 2024, she has been at the forefront of ensuring the integrity of corporate sustainability efforts through rigorous and independent evaluations, a role entrusted to us by SBTN.

With over 15 years of experience in environmental auditing and sustainability assurance, Paola has contributed significantly to the field. She led SBTN’s validation pilot (2023–2024), shaping methodologies now ready for corporate adoption. Her prior work includes pivotal contributions to the Science Based Targets initiative (2014–2021) and overseeing the accreditation of one of Mexico’s first GHG verification bodies (2010–2012).

Paola’s expertise is instrumental in advancing accessible and robust validation services, supporting global sustainability goals, and fostering interoperability across sustainability systems.

She holds a master’s degree in Climate Change from the Crawford School of Policy and Economics at the Australian National University and is based in the Netherlands.

Heidi joined the Accountability Accelerator in November 2024 as the Operations and Data Manager. In this role, she is responsible for coordinating the operations of the validation service for science-based targets for nature, set to launch later in 2024. Heidi leads the data management strategy and oversees the maintenance of the validation platform. She is also in charge of helping create the “SBTN Validation Tracker,” which will publicly disclose companies’ targets. Over the past eight years, Heidi has worked in the sustainability field, specializing in sustainable agriculture. Her expertise spans science-based target approaches for nature and climate, biodiversity, land degradation, water impact accounting methods, circular economy, and sustainability strategies. Heidi’s strengths lie in leading, strategizing, and operationalizing data management, technical reviews, and the development of metrics frameworks and analyses. Her work is technically focused, drawing on her academic background in geoinformatics, environmental science, and data science. Before joining the GCA Accountability Accelerator, Heidi worked as a Technical Managing Consultant on South Pole’s Agricultural Value Chains team and as an Agrifood and Biodiversity Consultant at Metabolic. Early in her career, she developed expertise in monitoring, evaluation, and learning (MEL) related to value chain development and financial mechanisms aimed at benefiting smallholder farmers across several African countries. Heidi currently resides in Finland.

Kathryn leads the design and implementation of the validation service for science-based targets for nature. She works closely with the Science-based Targets Network (SBTN) to share insights from validations, helping to strengthen the target-setting process.

Kathryn’s career has focused on supporting businesses with large agricultural supply chains to measure their climate and nature impacts, develop sustainability strategies, and set meaningful targets. Before joining the Accountability Accelerator, she spent seven years with PwC’s Sustainability and Climate Change team. During this time, she was seconded to SBTN, where she supported 17 multinational companies in piloting and validating their first science-based targets for nature.

Kathryn holds an MSc in Environmental Technology from Imperial College London and a BSc in Geography, with research centered on managing the projected risks of climate change to business and society.