diff --git a/classes/migration/upgrade/v3_5_0/I9860_EditorialMastheadNavMenuItem.php b/classes/migration/upgrade/v3_5_0/I9860_EditorialMastheadNavMenuItem.php
new file mode 100644
index 00000000000..c8c5e44f7ba
--- /dev/null
+++ b/classes/migration/upgrade/v3_5_0/I9860_EditorialMastheadNavMenuItem.php
@@ -0,0 +1,91 @@
+<?php
+
+/**
+ * @file classes/migration/upgrade/v3_5_0/I9860_EditorialMastheadNavMenuItem.php
+ *
+ * Copyright (c) 2024 Simon Fraser University
+ * Copyright (c) 2024 John Willinsky
+ * Distributed under the GNU GPL v3. For full terms see the file docs/COPYING.
+ *
+ * @class I9860_EditorialMastheadNavMenuItem
+ *
+ * @brief Add editorial masthead navigation menu item under about menu item in the primary navigation menu.
+ */
+
+namespace PKP\migration\upgrade\v3_5_0;
+
+use APP\core\Services;
+use PKP\db\DAORegistry;
+use PKP\install\DowngradeNotSupportedException;
+use PKP\migration\Migration;
+use PKP\navigationMenu\NavigationMenuItem;
+use PKP\navigationMenu\NavigationMenuItemAssignmentDAO;
+use PKP\navigationMenu\NavigationMenuItemDAO;
+
+class I9860_EditorialMastheadNavMenuItem extends Migration
+{
+    /**
+     * Run the migration.
+     */
+    public function up(): void
+    {
+        $navigationMenuItemDao = DAORegistry::getDAO('NavigationMenuItemDAO'); /** @var NavigationMenuItemDAO $navigationMenuItemDao */
+        $navigationMenuItemAssignmentDao = DAORegistry::getDAO('NavigationMenuItemAssignmentDAO'); /** @var NavigationMenuItemAssignmentDAO $navigationMenuItemAssignmentDao */
+
+        $contextIds = Services::get('context')->getIds();
+        foreach ($contextIds as $contextId) {
+            // Create and insert new Editorial Masthead navigation menu item
+            $navigationMenuItem = $navigationMenuItemDao->newDataObject();
+            $navigationMenuItem->setTitleLocaleKey('common.editorialMasthead');
+            $navigationMenuItem->setContextId($contextId);
+            $navigationMenuItem->setType(NavigationMenuItem::NMI_TYPE_MASTHEAD);
+            $editorialMastheadNavMenuItemId = $navigationMenuItemDao->insertObject($navigationMenuItem);
+
+            $mainAboutNavMenuItemId = $mainAboutNavMenuId = null;
+            // Try to find the About navigation menu item
+            $aboutNavMenuItems = $navigationMenuItemDao->getByType(NavigationMenuItem::NMI_TYPE_ABOUT, $contextId);
+            while ($aboutNavMenuItem = $aboutNavMenuItems->next()) {
+                // Get all assignments for the nav menu item
+                $aboutNavMenuItemAssignments = $navigationMenuItemAssignmentDao->getByMenuItemId($aboutNavMenuItem->getId());
+                while ($aboutNavMenuItemAssignment = $aboutNavMenuItemAssignments->next()) {
+                    // Find the assignment with no parent
+                    if ($aboutNavMenuItemAssignment->getParentId() == 0) {
+                        $mainAboutNavMenuItemId = $aboutNavMenuItemAssignment->getMenuItemId();
+                        $mainAboutNavMenuId = $aboutNavMenuItemAssignment->getMenuId();
+                        break 2;
+                    }
+                }
+            }
+            if ($mainAboutNavMenuItemId && $mainAboutNavMenuId) {
+                // Create new Editorial Masthead nav menu item assignemnt. The parent is the main About nav menu item with no parent.
+                $editorialMastheadMenuItemAssignment = $navigationMenuItemAssignmentDao->newDataObject();
+                $editorialMastheadMenuItemAssignment->setMenuId($mainAboutNavMenuId);
+                $editorialMastheadMenuItemAssignment->setMenuItemId($editorialMastheadNavMenuItemId);
+                $editorialMastheadMenuItemAssignment->setParentId($mainAboutNavMenuItemId);
+
+                // Resequence all main About nav menu children, so that the new Editorial Masthead is on the third place (considering the default About nav menu and its order).
+                $seq = 0;
+                $allAboutNavMenuChildren = $navigationMenuItemAssignmentDao->getByMenuIdAndParentId($mainAboutNavMenuId, $mainAboutNavMenuItemId);
+                while ($aboutNavMenuChild = $allAboutNavMenuChildren->next()) {
+                    if ($seq == 2) {
+                        $editorialMastheadMenuItemAssignment->setSequence($seq);
+                    } else {
+                        $aboutNavMenuChild->setSequence($seq);
+                        $navigationMenuItemAssignmentDao->updateObject($aboutNavMenuChild);
+                    }
+                    $seq++;
+                }
+                $navigationMenuItemAssignmentDao->insertObject($editorialMastheadMenuItemAssignment);
+            }
+        }
+
+    }
+
+    /**
+     * Reverse the migration
+     */
+    public function down(): void
+    {
+        throw new DowngradeNotSupportedException();
+    }
+}
diff --git a/classes/navigationMenu/NavigationMenuItemAssignmentDAO.php b/classes/navigationMenu/NavigationMenuItemAssignmentDAO.php
index 66464b4b17b..6ecba11222a 100644
--- a/classes/navigationMenu/NavigationMenuItemAssignmentDAO.php
+++ b/classes/navigationMenu/NavigationMenuItemAssignmentDAO.php
@@ -132,7 +132,8 @@ public function getByMenuIdAndParentId($menuId, $parentId)
             'SELECT nmh.*
 				FROM navigation_menu_item_assignments as nmh
 				WHERE nmh.navigation_menu_id = ?
-				AND nmh.parent_id = ?',
+				AND nmh.parent_id = ?
+                ORDER BY nmh.seq',
             [(int) $menuId, (int) $parentId]
         );
         return new DAOResultFactory($result, $this, '_fromRow');
@@ -175,7 +176,7 @@ public function updateObject($navigationMenuItemAssignment)
 				navigation_menu_id = ?,
 				navigation_menu_item_id = ?,
 				parent_id = ?,
-				seq = ?,
+				seq = ?
 			WHERE navigation_menu_item_assignment_id = ?',
             [
                 (int) $navigationMenuItemAssignment->getMenuId(),