diff --git a/ontology/uco/core/core.ttl b/ontology/uco/core/core.ttl
index aaa52614..7accb6fa 100644
--- a/ontology/uco/core/core.ttl
+++ b/ontology/uco/core/core.ttl
@@ -171,6 +171,44 @@ core:EnclosingCompilation
 	sh:targetClass core:EnclosingCompilation ;
 	.
 
+core:Event
+	a
+		owl:Class ,
+		sh:NodeShape
+		;
+	rdfs:subClassOf core:UcoObject ;
+	rdfs:label "Event"@en ;
+	rdfs:comment "An Event is a noteworthy occurrence (something that happens or might happen)."@en ;
+	sh:property
+		[
+			sh:class core:UcoObject ;
+			sh:nodeKind sh:IRI ;
+			sh:path core:eventContext ;
+		] ,
+		[
+			sh:class types:Dictionary ;
+			sh:nodeKind sh:IRI ;
+			sh:path core:eventAttribute ;
+		] ,
+		[
+			sh:datatype xsd:dateTime ;
+			sh:nodeKind sh:Literal ;
+			sh:path core:endTime ;
+		] ,
+		[
+			sh:datatype xsd:dateTime ;
+			sh:nodeKind sh:Literal ;
+			sh:path core:startTime ;
+		] ,
+		[
+			sh:datatype xsd:string ;
+			sh:nodeKind sh:Literal ;
+			sh:path core:eventType ;
+		]
+		;
+	sh:targetClass core:Event ;
+	.
+
 core:ExternalReference
 	a
 		owl:Class ,
@@ -518,6 +556,27 @@ core:endTime
 	rdfs:range xsd:dateTime ;
 	.
 
+core:eventAttribute
+	a owl:ObjectProperty ;
+	rdfs:label "Event Attribute"@en ;
+	rdfs:comment "An event attribute specifies an ad-hoc attribute/value for an event."@en ;
+	rdfs:range types:Dictionary ;
+	.
+
+core:eventContext
+	a owl:ObjectProperty ;
+	rdfs:label "Event Context"@en ;
+	rdfs:comment "An event context describes the association of actions and objects relating to an event."@en ;
+	rdfs:range core:UcoObject ;
+	.
+
+core:eventType
+	a owl:DatatypeProperty ;
+	rdfs:label "Event Type"@en ;
+	rdfs:comment "An event type specifies a classification type for the event."@en ;
+	rdfs:range xsd:string ;
+	.
+
 core:externalIdentifier
 	a owl:DatatypeProperty ;
 	rdfs:label "externalIdentifier"@en ;
@@ -677,6 +736,11 @@ core:value
 	rdfs:range xsd:string ;
 	.
 
+types:Dictionary
+	a owl:Class ;
+	rdfs:isDefinedBy <https://ontology.unifiedcyberontology.org/uco/types> ;
+	.
+
 []
 	a owl:AllDisjointClasses ;
 	owl:members (