Tammy Newmark

A leader in impact investing, This email address is being protected from spambots. You need JavaScript enabled to view it. has over thirty years of experience in the field.  She has led EcoEnterprises Fund from its launch under The Nature Conservancy in 1998 to spinning off a co-owned investment manager in 2010.   Prior to The Nature Conservancy, Newmark directed Technoserve, Inc.’s environmental business advisory services in Latin America and Africa. She was also a founding officer of Environmental Enterprises Assistance Fund, the first venture fund that specialized in renewable energy, clean technology, and green investments in emerging markets. She established investment groups: Yayasan Bina Usaha Lingkungan and Preferred Energy Investments in Indonesia and the Philippines, respectively. She has also worked for the International Finance Corporation and JPMorgan Chase. Newmark is co-author of Portfolio for the Planet: Lessons from 10 years of impact investing, (Earthscan/Routledge Press, 2011).  Newmark has an MBA from the Wharton School of the University of Pennsylvania.

MIchele Pena

This email address is being protected from spambots. You need JavaScript enabled to view it. has been part of the EcoEnterprises Fund’s executive team since 2001, leading operational, business development, and evaluation functions. Spinning off from The Nature Conservancy in 2010, she with Tammy Newmark established EcoEnterprises Fund as a co-owned investment manager. Pena brought organizational and marketing expertise to EcoEnterprises Fund from her position as Program Director at the Climate Institute, a nonprofit organization focused on global climate change issues. Pena is co-author of Portfolio for the Planet: Lessons from 10 years of impact investing, (Earthscan/Routledge Press, 2011). She has an MA from American University in Washington, D.C.

Oksana Aguilar

With over seventeen years’ experience, This email address is being protected from spambots. You need JavaScript enabled to view it. has served in various financial management functions. For five years, she served as Investment Monitoring Officer for Fondo EcoEmpresas, S.A., EcoEnterprises Fund’s first fund under management and rejoined the team in 2012 to serve as Financial Controller for EcoEnterprises Partners II, LP. Prior to this present position, she was Finance and Administration Director for World Wildlife Fund’s Central America Program Office in Costa Rica. She also held the position of Finance Specialist at The Nature Conservancy and worked in the comptroller’s office in IUCN’s Mesoamerican Office.  Aguilar holds an MBA with emphasis in banking and finance from the University of Costa Rica.

John McKenna

This email address is being protected from spambots. You need JavaScript enabled to view it. brings nearly twenty years’ experience in both private equity and the technology industry, the majority focused on the emerging markets of Latin America, Africa, and Asia.  He has worked for EcoEnterprises Fund since 2014.  His functional expertise includes business development, mergers and acquisitions, restructurings, and turn-around management.  McKenna worked as an executive in the Private Equity group of Fidelity Investments, covering a wide-range of industries. He has an MBA from the University of South Carolina.

Nathalie Prado

This email address is being protected from spambots. You need JavaScript enabled to view it. has been on EcoEnterprises Fund’s investment team for twelve years, beginning with a monitoring, impact management, and workout role. She rejoined EcoEnterprises Fund in 2012 after several years at Root Capital, where she was a loan officer for Central America, leading investment activities in Nicaragua, Dominican Republic and Haiti. She holds an MBA in Sustainable Business from Universidad para la Cooperacion International in Costa Rica.

Nathalie Prado

This email address is being protected from spambots. You need JavaScript enabled to view it. has twelve years of experience in investments, mergers and acquisitions, risk analyses, and sustainability. Prior to joining EcoEnterprises Fund in 2015, she worked as a project leader for the Boston Consulting Group in Europe, the U.S., and Asia, facilitating decision making and supporting corporate clients during due diligence to post-merger integration. She also worked on social impact assignments with corporates, NGOs, and foundations. She holds an MA in International relations, economics, and business administration from the University of Passau in Germany with a specialization on Latin America economies.

Anna Schaefer

This email address is being protected from spambots. You need JavaScript enabled to view it. brings investment analysis, portfolio monitoring, and market research experience to the team. Prior to joining EcoEnterprises Fund, she worked in Nicaragua as a loan analyst and Latin America Regional Representative for a microfinance fund. In this capacity, she performed in-country due diligence visits, and trained country representatives for microfinance institutions. She holds a BA in Business from the University of Wisconsin - Madison.

Marti Jimenez, Investment Committee

Marti Jimenez, Founder and Managing Partner of Noveza has led the start-up and management of four companies in ecotourism, hospital, and assisted living sectors. Previously, Jiménez worked at Mesoamerica Investments in Central America, Bain & Company in Colombia and Ramius Capital Group in New York. He has served on several boards of directors and committees, including that of the Organization for Tropical Studies, and INCAE Business School, and at a cabinet-level board in the public sector. Jimenez serves as an Investment Committee member for EcoEnterprises Partners II, LP and EcoEnterprises Partners III, LP. He has an industrial engineering degree from the University of Costa Rica and an MBA from Harvard University. He is a Fellow of the Central America Leadership Initiative and a member of the Aspen Global Leadership Network.

Michael Murray, Investment Committee

Michael Murray has been involved with EcoEnterprises Fund for 20 years as a Board Member or Investment Committee Member. He has 35+ years of business experience. He has almost 20 years General Management in Small to Fortune 50 companies. He has over 20 years of investment experience since founding a Venture Capital Fund in 1998. His last project was Chairman of the Board and CFO of Wholesale Solar. He invested in the company, converted it to an Employee Owned (ESOP) structure, brought in a new CEO, changed the By Laws to form a Majority Independent Board of Directors and split the Chairman/CEO roles to improve Governance.  He has 15 years of Public Service as a Mayor, Council Member, Planning Commissioner and Chairman of the Library Tax Advisory Committee. He has an Electrical Engineering degree from University of California and an Executive MBA from Dartmouth (Tuck).

Jamison Ervin

Jamison Ervin is Manager of UNDP's Global Programme on Nature for Development in which she leads efforts on the Equator Initiative, the New York Declaration on Forests and Learning for Nature, initiatives that foster and showcase nature-based solutions that help achieve the 2030 Agenda for Sustainable Development at local, national, and international levels. She has also served as a senior advisor for The Nature Conservancy, World Wildlife Fund and Forest Stewardship Council.

Frank Hicks

Hicks is an advisor on public-private partnerships at Forest Trends, a non-profit focused on research, policy and convening on forest health, watershed conservation, and climate action. He consulted in agribusiness, smallholder supply chains and credit, and ecosystem services with Rainforest Alliance, Root Capital, TechnoServe, and Biodiversity Conservation Network. Hicks was on the Board of Directors of Fund I and principal of a Fund I portfolio company, Organic Commodity Products, an organic chocolate company in Costa Rica.

Kurt Holle

Holle is a conservation and ecotourism entrepreneur.  Since 2018, he has served as World Wildlife Fund's Country Representative for Peru; in this capacity, he was instrumental to a milestone project with the Government of Peru and partners to fund the management of 17 million hectares of protected areas in the Amazon, the first step to “Patrimonio Natural del Perú” which will reach all national parks in the Amazon river basin and Pacific marine protected areas in the Andean Coast. He founded and directed Rainforest Expeditions, a foremost ecotourism operator in the Peruvian Amazon. He also is Co-Founder of Deep in Forest, an investment network of 11 native communities and entrepreneurs designed to scale businesses that are working with communities and their forests.

Roberto Lopez

Lopez serves as the Director of Portfolio Review in the Risk Vice Presidency of CAF, (Corporacion Andina de Fomento), the Andean Development Bank. At CAF, he has also been in charge of the environmental and natural disasters' loan portfolios, the public sector environmental loan portfolio, and the biodiversity program within the social development and environmental units. Lopez was on Fund I's investment team.

Lil Soto

Soto is Program Manager at Fundación Avina, a Latin American foundation that promotes sustainability through collaborative processes, leading to large-scale positive impact. In this capacity, she is part of Avina's Access to Water Programme which deploys several strategies for sustainable and inclusive access to water and sanitation in Latin America. Soto was on the investment team of Fondo EcoEmpresas, S.A., the first EcoEnterprises Fund. 

Irene Suarez

Suarez leads nature-based solutions and food systems for the Climate Action Team for the UN Climate Change Conference (COP26).  She also served in this capacity on behalf of the UN Secretary General for the Climate Action Summit.  She advised on climate adaptation and loss for the Independent Association of Latin America and the Caribbean (AILAC) and facilitated participation in the UN Framework Convention on Climate Change.  She is a board member of Quantum Leap and Progresum.   She was a climate policy advisor for The Nature Conservancy, EARTH University and the Government of Costa Rica's Ministry of Environment and Energy.

Philippe Taieb

Taieb is an experienced consultant and entrepreneur coach. His focus is on strategy, leadership development, organizational effectiveness, and financial sustainability, with clients including Gates Foundation, World Bank, and World Wildlife Fund.  He has also worked closely as a coach with Echoing Green Fellows, Harvard i-lab venture teams as well as Harvard’s MBA students, alumni and Executive Education participants.  Earlier in his career, Taieb was a strategy consultant at Braxton Associates in London and Paris and led business units for SGS, the world leader in certification and quality control, in Senegal, Haiti, and Chile. He first became involved with the EcoEnterprises Fund over 20 years ago during his tenure at The Nature Conservancy.

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