diff --git a/common/changes/office-ui-fabric-react/nav-isselected-4143_2018-03-01-23-30.json b/common/changes/office-ui-fabric-react/nav-isselected-4143_2018-03-01-23-30.json
new file mode 100644
index 00000000000000..4c5e4f1d518ef4
--- /dev/null
+++ b/common/changes/office-ui-fabric-react/nav-isselected-4143_2018-03-01-23-30.json
@@ -0,0 +1,11 @@
+{
+  "changes": [
+    {
+      "packageName": "office-ui-fabric-react",
+      "comment": "Added is-selected and is-expanded semantic classes to compositelink style sets",
+      "type": "patch"
+    }
+  ],
+  "packageName": "office-ui-fabric-react",
+  "email": "v-brgarl@microsoft.com"
+}
\ No newline at end of file
diff --git a/packages/office-ui-fabric-react/src/components/Nav/Nav.styles.ts b/packages/office-ui-fabric-react/src/components/Nav/Nav.styles.ts
index 816a978de43bde..eced66f8129c4f 100644
--- a/packages/office-ui-fabric-react/src/components/Nav/Nav.styles.ts
+++ b/packages/office-ui-fabric-react/src/components/Nav/Nav.styles.ts
@@ -75,7 +75,9 @@ export const getStyles = (
         position: 'relative',
         color: semanticColors.bodyText,
         backgroundColor: semanticColors.bodyBackground,
-      }
+      },
+      isExpanded && 'is-expanded',
+      isSelected && 'is-selected'
     ],
     link: [
       'ms-Nav-link',