The conference “Ontology as Structured by the Interface with Semantics” (OASIS) 5 was held at University of Edinburgh on 3-5 December, 2025. Our current 3rd-year PhD student Cooper Roberts gave a presentation, entitled “Part is part (plus pragmatics)”. Our recent alum Filipe Hisao Kobayashi (PhD, 2023) also presented his work on “Building individual concepts structurally”.