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Wilma Haan is executive director of Open State Foundation. She used to work as a journalist and deputy editor-in-chief for, the biggest news website in The Netherlands. And she previously worked as head of digital for the Amsterdam based news paper ‘Het Parool’. Wilma firmly believes in the democratic importance of a transparent, verifiable government. Wilma studied journalism and philosophy. 

Breyten Ernsting works as a developer at the Open State Foundation since 2011. Breyten is an Information Science alumnus. He loves to help make data open, as well as increasing the usefulness of open data by combining related data sets. He is mainly busy working on Open Spending, Open Municipal Information and Politwoops, the site that keeps track of the deleted tweets by politicians. He operates the latter since 2010. It is is now available in more than 30 countries.

Lisette Kalshoven works as Senior Project Manager at Open State Foundation since 2019. She not only argues for opening up judicial, healthcare and education data, but also contributes to promoting reusing the beautiful data we already have. Lisette used to work at Kennisland as advisor copyright, heritage and open education, lobbied for a better and more flexible copyright at COMMUNIA, is active at Creative Commons as representative in the International Member Council and has a Masters degree in Military Science.

Photo: CC-BY-4.0 door Giorgos Gripeos.

Sicco van Sas started as an intern at the Open State Foundation for his master thesis Artificial Intelligence in 2012. Since then he always stayed involved with the foundation. Together with his team he won the Public Broadcasting Hackathon in 2013 and he created the Dutch Budget Visualization in 2014. He works as a developer at OSF since 2015. Sicco loves data, whether to make it available or to analyze it.










Projectmanager Tom Bolsius strongly believes that open data is necessary for a modern democracy. Tom previously worked for the CTO Innovation Team of the municipality of Amsterdam and for the Amsterdam Metropolitan Ombudsman, to improve public administration. In addition to his work for Open State Foundation, he is the founder and now a board member of Volt Nederland.