diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index 4f4e41b056..0d4dbaee37 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -29,6 +29,7 @@ Changelog
  * Fix: Ensure that disabled buttons have a consistent presentation on hover to indicate no interaction is available (Paarth Agarwal)
  * Fix: Update the 'Locked pages' report menu title so that it is consistent with other pages reports and its own title on viewing (Nicholas Johnson)
  * Fix: Support `formfield_callback` handling on `ModelForm.Meta` for future Django 4.2 release (Matt Westcott)
+ * Fix: Ensure that `ModelAdmin` correctly supports filters in combination with subsequent searches without clearing the applied filters (Stefan Hammer)
 
 
 4.0.2 (xx.xx.xxxx) - IN DEVELOPMENT
diff --git a/docs/releases/4.1.md b/docs/releases/4.1.md
index 4552de0567..67314160de 100644
--- a/docs/releases/4.1.md
+++ b/docs/releases/4.1.md
@@ -41,6 +41,7 @@ Wagtail 4.1 is designated a Long Term Support (LTS) release. Long Term Support r
  * Ensure that disabled buttons have a consistent presentation on hover to indicate no interaction is available (Paarth Agarwal)
  * Update the 'Locked pages' report menu title so that it is consistent with other pages reports and its own title on viewing (Nicholas Johnson)
  * Support `formfield_callback` handling on `ModelForm.Meta` for future Django 4.2 release (Matt Westcott)
+ * Ensure that `ModelAdmin` correctly supports filters in combination with subsequent searches without clearing the applied filters (Stefan Hammer)
 
 ## Upgrade considerations
 
diff --git a/wagtail/contrib/modeladmin/templates/modeladmin/includes/search_form.html b/wagtail/contrib/modeladmin/templates/modeladmin/includes/search_form.html
index d2a516eb4e..6c3d7a5a0b 100644
--- a/wagtail/contrib/modeladmin/templates/modeladmin/includes/search_form.html
+++ b/wagtail/contrib/modeladmin/templates/modeladmin/includes/search_form.html
@@ -6,5 +6,9 @@
             <input id="id_q" name="{{ search_var }}" value="{{ view.query }}" placeholder="{% blocktrans trimmed with view.verbose_name_plural|lower as name %}Search {{ name }}{% endblocktrans %}" type="text">
         {% endfield %}
         <button type="submit" class="w-sr-only">{% trans 'Search' %}</button>
+        {# Keep all parameters from the query string (e.g. filter state). #}
+        {% for name, value in view.params.items %}
+            {% if name != search_var %}<input type="hidden" name="{{ name }}" value="{{ value }}">{% endif %}
+        {% endfor %}
     </form>
 {% endif %}
diff --git a/wagtail/contrib/modeladmin/tests/test_simple_modeladmin.py b/wagtail/contrib/modeladmin/tests/test_simple_modeladmin.py
index 60b748b902..6c23de93b3 100644
--- a/wagtail/contrib/modeladmin/tests/test_simple_modeladmin.py
+++ b/wagtail/contrib/modeladmin/tests/test_simple_modeladmin.py
@@ -156,6 +156,13 @@ class TestBookIndexView(TestCase, WagtailTestUtils):
             response, '<span class="result-count">2 out of 4</span>', html=True
         )
 
+        # The search form should retain the filter
+        self.assertContains(
+            response,
+            '<input type="hidden" name="author__id__exact" value="1">',
+            html=True,
+        )
+
         for book in response.context["object_list"]:
             self.assertEqual(book.author_id, 1)