diff --git a/packages/common/telemetry.tsx b/packages/common/telemetry.tsx
index 3dc49c6e669..b92aae494cc 100644
--- a/packages/common/telemetry.tsx
+++ b/packages/common/telemetry.tsx
@@ -446,7 +446,13 @@ export function useTelemetryIdentify(API_URL: string) {
         ...(anonymousId && { anonymous_id: anonymousId }),
       })
 
-      posthogClient.identify(user.id, { gotrue_id: user.id })
+      // user.created_at is gotrue's immutable signup timestamp — safe to $set on
+      // every identify because the value never changes per user. Lets flag
+      // targeting distinguish brand-new signups from returning single-org users.
+      posthogClient.identify(user.id, {
+        gotrue_id: user.id,
+        ...(user.created_at && { signup_timestamp: user.created_at }),
+      })
     }
   }, [API_URL, user?.id])
 }