Focusing on social movement organizations (SMOs) in the Czech Republic, this article explores the level of transnational activism of these actors. Although knowledge exists on domestic interest groups’ choice of European Union (EU) venues for lobbying, the influence of EU funding on protest and public campaigning by actors such as SMOs remains under-studied. We show what the level of transnationalization of SMOs is, what types of transnational strategies SMOs employ, and what explains these choices. Specifically, the article examines the effect the EU has had on Czech SMOs. We are interested in whether EU funding contributed to their de-radicalization and co-optation by the political elite, or rather empowered them to engage in transnational protest. The results of our analysis support the empowerment hypothesis.