diff --git a/atst/routes/task_orders/signing.py b/atst/routes/task_orders/signing.py
index 595c184b..61993928 100644
--- a/atst/routes/task_orders/signing.py
+++ b/atst/routes/task_orders/signing.py
@@ -7,6 +7,7 @@ from atst.domain.authz import Authorization
 from atst.domain.exceptions import NotFoundError
 from atst.domain.task_orders import TaskOrders
 from atst.forms.task_order import SignatureForm
+from atst.utils.flash import formatted_flash as flash
 
 
 def find_unsigned_ko_to(task_order_id):
@@ -54,6 +55,7 @@ def record_signature(task_order_id):
             **form.data,
         )
 
+        flash("task_order_signed")
         return redirect(
             url_for(
                 "portfolios.view_task_order",
diff --git a/atst/utils/flash.py b/atst/utils/flash.py
index b0100dd0..5f2dfafd 100644
--- a/atst/utils/flash.py
+++ b/atst/utils/flash.py
@@ -1,6 +1,13 @@
 from flask import flash, render_template_string
 
 MESSAGES = {
+    "task_order_signed": {
+        "title_template": "Task Order Signed",
+        "message_template": """
+        <p>Task order has been signed successfully</p>
+        """,
+        "category": "success",
+    },
     "new_portfolio_member": {
         "title_template": "Member added successfully",
         "message_template": """