Executive Committee

Statutory members

Mirjam 't Lam

Managing Director and Interim Director of Investments

Mirjam 't Lam joined Oikocredit in November 2020 as Director of Finance & Risk and was Interim Managing Director for several months... Read more

Mirjam 't Lam joined Oikocredit in November 2020 as Director of Finance & Risk and was Interim Managing Director for several months before becoming Managing Director on 1 December 2021.   

With more than 20 years of experience in financial services, Mirjam joined Oikocredit from the Africa-focused investment company Arise, where she served as Chief Financial Risk Officer (CFRO) and played a leading role in the creation of the organisation. Her other previous positions have included CFRO for Rabo Development and Executive Director at several member banks of the Rabobank Group. 

Mirjam has experience in renewable energy and sustainability and was also part of Rabobank's food and agriculture strategy team. She has international experience of working in both mature and emerging markets and holds a master's degree in international business from Maastricht University. 

Patrick Stutvoet

Director of Inflow & Business Enablers

Patrick Stutvoet joined Oikocredit in March 2019 as Director of IT & Operations and took on additional responsibility for Investor... Read more

Patrick Stutvoet joined Oikocredit in March 2019 as Director of IT & Operations and took on additional responsibility for Investor Relations in August 2021. He became Director of Inflow & Business Enablers in July 2022. 

Patrick has more than 20 years’ experience in information technology and operations for the financial services sector, including roles at the Bank of England, ABN AMRO and Cap Gemini. 

Prior to joining Oikocredit he worked as an operations consultant at the Bank of England, Head of Transaction Banking (IT International) at ABN AMRO, and Head of Investments (IT International) at ABN AMRO.

Gwen van Berne

Director of Finance & Risk

Gwen van Berne joined Oikocredit in May 2022 as Director of Finance & Risk, with 23 years’ experience in the financial services sector,... Read more

Gwen van Berne joined Oikocredit in May 2022 as Director of Finance & Risk, with 23 years’ experience in the financial services sector, and was the former Chief Financial Officer of RIPE NCC.   

Before joining Oikocredit, Gwen also served as a Supervisory Board member for International Card Services in the Netherlands. In the first stages of her career, Gwen fulfilled a variety of roles within ABN AMRO Bank.  

As a volunteer leader Gwen is Chair of the Institute of Management Accountants (IMA) and has also supported the Delft Chamber Music Festival as board member and treasurer.   

Gwen holds a master’s degree in law from the University of Utrecht and is a CMA Certified Management Accountant.

Non-statutory members

Ging Ledesma

Director of Strategy & Sustainable Impact

Ging Ledesma joined Oikocredit in 1999 as Deputy Regional Manager for Southeast Asia, became Oikocredit’s first Social Performance Manager... Read more

Ging Ledesma joined Oikocredit in 1999 as Deputy Regional Manager for Southeast Asia, became Oikocredit’s first Social Performance Manager in 2009 and joined the then management team in 2012 as Director of Social Performance & Credit Analysis. In 2015 Ging became Director of Investor Relations and Social Performance and was also concurrently appointed as Interim Managing Director for 10 months. In 2019 Ging took responsibility for the new department of Social Performance Innovation. She was appointed Director of Strategy & Sustainable Impact in July 2022. 

Prior to joining Oikocredit, Ging worked for various organisations in Asia, including Asia Partnership for Human Development based in Hong Kong, the Ecumenical Center for Social Concerns and the National Secretariat for Social Action, Justice and Peace in the Philippines. 

She has a degree in business administration with a major in finance from the University of the Philippines.

Wilma Straatman

Director of People & Development

Wilma Straatman joined Oikocredit in April 2021 on an interim basis as Director of People & Change. She became a member of the permanent... Read more

Wilma Straatman joined Oikocredit in April 2021 on an interim basis as Director of People & Change. She became a member of the permanent staff as Director of People & Development in July 2022. 

Wilma has more than 25 years’ experience in realising change, facilitating personal and business transformation, and performing in interim executive roles. She has worked for major corporate organisations such as Unilever, ABN AMRO, Robeco, FedEx and AkzoNobel and for globally oriented smaller-scale organisations such as Porticus, Aberkyn and Cirque du Soleil. She is involved in several HR tech initiatives. 

She holds a master’s degree in business science from the University of Groningen and is an accredited coach, practitioner and facilitator in a range of methodologies.

Hans Perk

Director of Specialised Finance & Community Building

Hans Perk joined Oikocredit in January 2018 as Regional Director Africa. He became Director of Specialised Finance & Community Building... Read more

Hans Perk joined Oikocredit in January 2018 as Regional Director Africa. He became Director of Specialised Finance & Community Building in July 2022. 

Hans has worked with Triodos Bank as account manager sustainable asset management, in Guatemala with Eco Volcan as a project manager, and on sustainable supply chains and business development with Solidaridad, where he became Regional Director West Africa in Ghana. He has held board positions at sustainable impact investment funds, NGOs and purpose-driven businesses. 

His experience combines working in low-income countries with knowledge of the agricultural sector and development finance, and an extensive network in impact investing. 

Hans has studied economics and business at the University of Applied Sciences Utrecht and  trained in impact investment, microfinance and leadership, among other subjects, at the Saïd Business School in Oxford and De Baak Management Center in Amsterdam.

Beja Morren

Director of Accounting & Control

Beja Morren joined Oikocredit in April 2015 as Financial Controller, became Finance Manager in June 2015, Finance Deputy Director in 2017... Read more

Beja Morren joined Oikocredit in April 2015 as Financial Controller, became Finance Manager in June 2015, Finance Deputy Director in 2017 and Manager of Financial Control & Accounting in 2019. She became Director of Accounting & Control in July 2022. 

Beja worked previously for almost 10 years as an auditor and manager at PWC in the Netherlands. 

Her experience includes finance department management, project management, consolidation and reporting, accounting, Dutch GAAP, international financial reporting standards (IFRS), assurance and auditing. 

Beja is a registered auditor in the Netherlands and she holds a master of science degree in accountancy from Nyenrode Business University.

Lydia Tomitova

Director of Investor Relations

Lydia Tomitova joined Oikocredit in May 2011 as Legal Counsel for Loans & Investments and went on to hold managerial posts in... Read more

Lydia Tomitova joined Oikocredit in May 2011 as Legal Counsel for Loans & Investments and went on to hold managerial posts in Operational Risk & Compliance and Investor Relations. She became Director of Investor Relations in July 2022. 

Lydia started her career at the Carnegie Council for Ethics in International Affairs, New York, and worked as a volunteer at the Clinton Global Initiative and the Human Rights Watch Women’s Rights Division. She was a summer associate at Chadbourne & Parke LLP and trained at the commercial division of the Brooklyn courts as the 2008 financial crisis was unfolding. Her experience includes capital products, international business transactions, corporate governance, international economic policies, international politics and people management. 

She holds a bachelor’s degree from Colby College, Maine, and a doctor of jurisprudence degree from Brooklyn Law School, New York, including studies at the London School of Economics and Political Science and at University of Amsterdam Law School. She is a member of the New York Bar of Attorneys.