diff --git a/packages/react-native/Libraries/Share/Share.d.ts b/packages/react-native/Libraries/Share/Share.d.ts
index 76ac757c97e..789251a2c7b 100644
--- a/packages/react-native/Libraries/Share/Share.d.ts
+++ b/packages/react-native/Libraries/Share/Share.d.ts
@@ -27,17 +27,11 @@ export type ShareOptions = {
   anchor?: number | undefined;
 };
 
-export type ShareSharedAction = {
-  action: 'sharedAction';
-  activityType?: string | undefined;
+export type ShareAction = {
+  action: 'sharedAction' | 'dismissedAction';
+  activityType?: string | null | undefined;
 };
 
-export type ShareDismissedAction = {
-  action: 'dismissedAction';
-};
-
-export type ShareAction = ShareSharedAction | ShareDismissedAction;
-
 export interface ShareStatic {
   /**
    * Open a dialog to share text content.
diff --git a/packages/react-native/types/__typetests__/index.tsx b/packages/react-native/types/__typetests__/index.tsx
index d73b93d1459..26419aa6c34 100644
--- a/packages/react-native/types/__typetests__/index.tsx
+++ b/packages/react-native/types/__typetests__/index.tsx
@@ -84,8 +84,7 @@ import {
   SectionListProps,
   SectionListRenderItemInfo,
   Share,
-  ShareDismissedAction,
-  ShareSharedAction,
+  ShareAction,
   StatusBar,
   StyleProp,
   StyleSheet,