This article shows that slavery was more connected to Dutch society and economy than has been previously assumed. It does so by investigating the people involved in Dutch slavery insurance in the period 1718-1734, when the Dutch slave trade was monopolized by the state-chartered West India Company (WIC) and the period 1763-1778, when the private slave trade reached its peak and slavery insurance was more common. This article analyzes a variety of primary sources that have not been studied in this light before. The analysis shows that a large and varied group was involved and that slavery insurance was not a regional institution that only affected the Dutch colonies.