diff --git a/Jenkinsfile b/Jenkinsfile
index d72d187745a..5e5b3641c30 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -762,7 +762,11 @@ pipeline {
                     }
                     post {
                         always {
-                            unitTestPost artifacts: ['nlt_logs/'],
+                            unitTestPost artifacts: ['nlt_logs/', 'nlt_memcheck_logs/',
+                                                     'nlt-server-leaks.json',
+                                                     'nlt-client-leaks.json',
+                                                     'nlt-junit.xml',
+                                                     'vm_test/nlt-errors.json'],
                                          testResults: 'nlt-junit.xml',
                                          always_script: 'ci/unit/test_nlt_post.sh',
                                          valgrind_stash: 'nlt-memcheck'
@@ -1035,7 +1039,7 @@ pipeline {
                             stash name: 'fault-inject-valgrind',
                                   includes: '*.memcheck.xml',
                                   allowEmpty: true
-                            archiveArtifacts artifacts: 'nlt_logs/fault-injection/',
+                            archiveArtifacts artifacts: 'nlt_logs/fault-injection/,nlt-errors.json,nlt-client-leaks.json,nlt-junit.xml',
                                              allowEmptyArchive: true
                             job_status_update()
                         }
diff --git a/ci/unit/test_nlt_post.sh b/ci/unit/test_nlt_post.sh
index c46a63dac2f..48ebee8f802 100755
--- a/ci/unit/test_nlt_post.sh
+++ b/ci/unit/test_nlt_post.sh
@@ -22,5 +22,13 @@ rsync -v -dpt -z -e "ssh $SSH_KEY_ARGS" jenkins@"$NODE":build/ \
       --filter="include nlt*.json" --filter="include dnt*.xml" \
       --filter="include nltir.xml" --filter="include nltr.json" \
       --filter="include nlt-junit.xml" --filter="exclude *" ./
+
+# Copy per-test valgrind memcheck XMLs into a dedicated directory so
+# they are archived as a logical group. The originals stay at the
+# workspace root so unitTestPost's valgrind_stash still picks them up
+# for the pipeline-end valgrindReportPublish panel.
+mkdir -p nlt_memcheck_logs
+cp dnt*.memcheck.xml nlt_memcheck_logs/ 2>/dev/null || true
+
 mkdir -p vm_test
 mv nlt-errors.json vm_test/