Tobias Koellner is a social anthropologist and sociologist at the Witten Institute for Family Business, Witten/Herdecke University, Germany. Connecting economic sociology and kinship anthropology, he leads research on the social and cultural embeddedness of family firms and business families. He is the editor of Family Firms and Business Families in Cross-Cultural Perspective (Palgrave Macmillan, 2023) and Sociology of the Business Family (with Heiko Kleve, 2023).