diff --git a/app/models/event.rb b/app/models/event.rb
index c90fee9542657a4c238dfd047f5aea5e1b0c6705..57f441187b4273ba29fcb8f9fa78549b9822b195 100644
--- a/app/models/event.rb
+++ b/app/models/event.rb
@@ -39,7 +39,7 @@ class Event < ActiveRecord::Base
     where(project_id: projects).recent
   end
 
-  scope :with_associations, -> { includes(project: :namespace) }
+  scope :with_associations, -> { includes(:author, :project, :target, project: :namespace) }
   scope :for_milestone_id, ->(milestone_id) { where(target_type: "Milestone", target_id: milestone_id) }
 
   class << self
diff --git a/changelogs/unreleased/27395-reduce-group-activity-sql-queries-2.yml b/changelogs/unreleased/27395-reduce-group-activity-sql-queries-2.yml
new file mode 100644
index 0000000000000000000000000000000000000000..f3ce1709518a7bc82b014e0dc68da427b42ed9e5
--- /dev/null
+++ b/changelogs/unreleased/27395-reduce-group-activity-sql-queries-2.yml
@@ -0,0 +1,4 @@
+---
+title: Include :author, :project, and :target in Event.with_associations
+merge_request:
+author: