Head, Office of Anticorruption and Integrity, ADB Profile / Bio John Versantvoort is the Head of the Office of Anticorruption and Integrity (OAI) at Asian Development Bank (ADB) since December 2017. OAI leads the anticorruption and integrity initiatives of the bank, including investigation of integrity violations, design and implementation of preventive and remedial measures, and awareness raising and capacity building support. John joined ADB as a lawyer in the Office of the General Counsel in April 2007, where he took on progressive levels of technical and managerial responsibility. Prior to joining ADB, he established a legal practice in Japan for Benelux law and tax advisory firm Loyens & Loeff (2001-2006) and practiced law in the Netherlands for Loyens & Loeff and law firm Allen & Overy (1995-2001). John has obtained a Master of Laws degree (East-Asian law) from University of London, and a Master of Laws degree (Dutch civil law) and Master of Arts degree (Japanese studies) from University of Leiden, the Netherlands. Materials Title Date Learning Materials Topics Opening Remarks 11 December, 2025 Document Public Sector Management and Governance Opening Remarks 7 December, 2023 Document Public Sector Management and Governance, Regional Cooperation and Integration [English] ADB and Integrity Risks 29 August, 2023 Slides ADB Administration and Governance, Capacity Development, Knowledge Management, Public Sector Management and Governance [Mandarin] ADB and Integrity Risks 29 August, 2023 Slides ADB Administration and Governance, Capacity Development, Public Sector Management and Governance, Knowledge Management Opening Remarks by ADB Office of Anticorruption and Integrity 9 May, 2023 Document ADB Administration and Governance, Capacity Development, Knowledge Management Impacts of Development Bank Sanctions 23 June, 2022 Multimedia ADB Administration and Governance The Integrity Learning Series: Integrity Risks in Vaccine Programs 30 September, 2021 Multimedia Capacity Development Civil society engagement for integrity and accountability 10 August, 2021 Multimedia Capacity Development Welcome Remarks 28 July, 2020 Document ADB Administration and Governance, Capacity Development, Public Sector Management and Governance, Knowledge Management Remarks by Asian Development Bank 6 December, 2019 Document Capacity Development, Public Sector Management and Governance, Knowledge Management PIN Presentation for AC Initiative 4 December, 2019 Slides Capacity Development, Public Sector Management and Governance, Knowledge Management Closing Remarks at IAD 2018 7 December, 2018 Document Education, Environment, Public Sector Management and Governance