My purpose in this paper is to critically examine Reinhardt Grossmann’s ontology. To do so, I begin by presenting his factualist theory of categories. In the second place, I discuss his phenomenological viewpoint on the problem of the ontological reduction of properties, as well as his logical atomist approach to the ontological analysis of particulars, properties, the exemplification nexus, and facts. Lastly, I explore his realist contribution to the problem of universals.