diff --git a/docs/api/schemas/latest/patchwork.yaml b/docs/api/schemas/latest/patchwork.yaml
index 45a6118..0fb2171 100644
--- a/docs/api/schemas/latest/patchwork.yaml
+++ b/docs/api/schemas/latest/patchwork.yaml
@@ -1495,6 +1495,12 @@ components:
           type: string
           format: iso8601
           readOnly: true
+        user:
+          type: object
+          title: The user responsible for this event
+          readOnly: true
+          allOf:
+            - $ref: '#/components/schemas/UserEmbedded'
         payload:
           type: object
     EventCoverCreated:
diff --git a/docs/api/schemas/patchwork.j2 b/docs/api/schemas/patchwork.j2
index 16d85a3..0acb665 100644
--- a/docs/api/schemas/patchwork.j2
+++ b/docs/api/schemas/patchwork.j2
@@ -1510,6 +1510,12 @@ components:
           type: string
           format: iso8601
           readOnly: true
+        user:
+          type: object
+          title: The user responsible for this event
+          readOnly: true
+          allOf:
+            - $ref: '#/components/schemas/UserEmbedded'
         payload:
           type: object
     EventCoverCreated:
diff --git a/docs/api/schemas/v1.0/patchwork.yaml b/docs/api/schemas/v1.0/patchwork.yaml
index 02f3a15..a59c64c 100644
--- a/docs/api/schemas/v1.0/patchwork.yaml
+++ b/docs/api/schemas/v1.0/patchwork.yaml
@@ -1460,6 +1460,12 @@ components:
           type: string
           format: iso8601
           readOnly: true
+        user:
+          type: object
+          title: The user responsible for this event
+          readOnly: true
+          allOf:
+            - $ref: '#/components/schemas/UserEmbedded'
         payload:
           type: object
     EventCoverCreated:
diff --git a/docs/api/schemas/v1.1/patchwork.yaml b/docs/api/schemas/v1.1/patchwork.yaml
index 0c086ed..728b878 100644
--- a/docs/api/schemas/v1.1/patchwork.yaml
+++ b/docs/api/schemas/v1.1/patchwork.yaml
@@ -1485,6 +1485,12 @@ components:
           type: string
           format: iso8601
           readOnly: true
+        user:
+          type: object
+          title: The user responsible for this event
+          readOnly: true
+          allOf:
+            - $ref: '#/components/schemas/UserEmbedded'
         payload:
           type: object
     EventCoverCreated:
diff --git a/docs/api/schemas/v1.2/patchwork.yaml b/docs/api/schemas/v1.2/patchwork.yaml
index 3a96aa3..9093bba 100644
--- a/docs/api/schemas/v1.2/patchwork.yaml
+++ b/docs/api/schemas/v1.2/patchwork.yaml
@@ -1495,6 +1495,12 @@ components:
           type: string
           format: iso8601
           readOnly: true
+        user:
+          type: object
+          title: The user responsible for this event
+          readOnly: true
+          allOf:
+            - $ref: '#/components/schemas/UserEmbedded'
         payload:
           type: object
     EventCoverCreated:
diff --git a/patchwork/api/event.py b/patchwork/api/event.py
index c0d973d..f1b46e5 100644
--- a/patchwork/api/event.py
+++ b/patchwork/api/event.py
@@ -23,6 +23,7 @@ from patchwork.models import Event
 class EventSerializer(ModelSerializer):
 
     project = ProjectSerializer(read_only=True)
+    user = UserSerializer()
     patch = PatchSerializer(read_only=True)
     series = SeriesSerializer(read_only=True)
     cover = CoverLetterSerializer(read_only=True)
@@ -50,7 +51,7 @@ class EventSerializer(ModelSerializer):
         data = super(EventSerializer, self).to_representation(instance)
         payload = OrderedDict()
         kept_fields = self._category_map[instance.category] + [
-            'id', 'category', 'project', 'date']
+            'id', 'category', 'project', 'date', 'user']
 
         for field in [x for x in data]:
             if field not in kept_fields:
@@ -65,10 +66,13 @@ class EventSerializer(ModelSerializer):
 
     class Meta:
         model = Event
-        fields = ('id', 'category', 'project', 'date', 'patch', 'series',
-                  'cover', 'previous_state', 'current_state',
+        fields = ('id', 'category', 'project', 'date', 'user', 'patch',
+                  'series', 'cover', 'previous_state', 'current_state',
                   'previous_delegate', 'current_delegate', 'created_check')
         read_only_fields = fields
+        versioned_fields = {
+            '1.2': ('user', ),
+        }
 
 
 class EventList(ListAPIView):
diff --git a/patchwork/tests/api/test_event.py b/patchwork/tests/api/test_event.py
index 8816538..fd42e3d 100644
--- a/patchwork/tests/api/test_event.py
+++ b/patchwork/tests/api/test_event.py
@@ -35,11 +35,16 @@ class TestEventAPI(utils.APITestCase):
     def assertSerialized(self, event_obj, event_json):
         self.assertEqual(event_obj.id, event_json['id'])
         self.assertEqual(event_obj.category, event_json['category'])
+        if event_obj.user is None:
+            self.assertIsNone(event_json['user'])
 
         # nested fields
 
         self.assertEqual(event_obj.project.id,
                          event_json['project']['id'])
+        if event_obj.user is not None:
+            self.assertEqual(event_obj.user.id,
+                             event_json['user']['id'])
 
         # TODO(stephenfin): Check other fields
 
@@ -66,10 +71,12 @@ class TestEventAPI(utils.APITestCase):
         # check-created
         create_check(patch=patch)
         # patch-delegated, patch-state-changed
+        maintainer = create_maintainer(project=patch.project)
         user = create_maintainer(project=patch.project)
         state = create_state()
         patch.delegate = user
         patch.state = state
+        self.assertTrue(patch.is_editable(maintainer))
         patch.save()
 
         return Event.objects.all()
