diff --git a/Documentation/rest-api-changes.txt b/Documentation/rest-api-changes.txt
index 0a203cc..33e7804 100644
--- a/Documentation/rest-api-changes.txt
+++ b/Documentation/rest-api-changes.txt
@@ -8263,19 +8263,19 @@
 The `SubmitRequirementExpressionInfo` describes the result of evaluating a
 single submit requirement expression, for example `label:code-review=+2`.
 
-[options="header",cols="1,6"]
+[options="header",cols="1,^1,5"]
 |===========================
-|Field Name      |Description
-|`expression`|
+|Field Name      ||Description
+|`expression`|optional|
 The submit requirement expression as a string, for example
 `branch:refs/heads/foo and label:verified=+1`.
-|`fulfilled`|
+|`fulfilled`||
 True if the submit requirement is fulfilled for the change.
-|`passing_atoms`|
+|`passing_atoms`|optional|
 A list of passing atoms as strings. For the above expression,
 `passing_atoms` can contain ["branch:refs/heads/foo"] if the branch predicate is
 fulfilled for the change.
-|`failing_atoms`|
+|`failing_atoms`|optional|
 A list of failing atoms. This is similar to `passing_atoms` except that it
 contains the list of predicates that are not fulfilled for the change.
 |===========================
@@ -8329,6 +8329,8 @@
 A link:#submit-requirement-expression-info[SubmitRequirementExpressionInfo]
 containing the result of evaluating the applicability expression. Not set if the
 submit requirement did not define an applicability expression.
+Note that fields `expression`, `passing_atoms` and `failing_atoms` are always
+omitted for the `applicability_expression_result`.
 |`submittability_expression_result`||
 A link:#submit-requirement-expression-info[SubmitRequirementExpressionInfo]
 containing the result of evaluating the submittability expression.
diff --git a/java/com/google/gerrit/server/change/SubmitRequirementsJson.java b/java/com/google/gerrit/server/change/SubmitRequirementsJson.java
index 8eeec62..4833197 100644
--- a/java/com/google/gerrit/server/change/SubmitRequirementsJson.java
+++ b/java/com/google/gerrit/server/change/SubmitRequirementsJson.java
@@ -36,28 +36,36 @@
     if (req.applicabilityExpression().isPresent()) {
       info.applicabilityExpressionResult =
           submitRequirementExpressionToInfo(
-              req.applicabilityExpression().get(), result.applicabilityExpressionResult().get());
+              req.applicabilityExpression().get(),
+              result.applicabilityExpressionResult().get(),
+              /* hide= */ true); // Always hide applicability expressions on the API
     }
     if (req.overrideExpression().isPresent()) {
       info.overrideExpressionResult =
           submitRequirementExpressionToInfo(
-              req.overrideExpression().get(), result.overrideExpressionResult().get());
+              req.overrideExpression().get(),
+              result.overrideExpressionResult().get(),
+              /* hide= */ false);
     }
     info.submittabilityExpressionResult =
         submitRequirementExpressionToInfo(
-            req.submittabilityExpression(), result.submittabilityExpressionResult());
+            req.submittabilityExpression(),
+            result.submittabilityExpressionResult(),
+            /* hide= */ false);
     info.status = SubmitRequirementResultInfo.Status.valueOf(result.status().toString());
     info.isLegacy = result.isLegacy();
     return info;
   }
 
   private static SubmitRequirementExpressionInfo submitRequirementExpressionToInfo(
-      SubmitRequirementExpression expression, SubmitRequirementExpressionResult result) {
+      SubmitRequirementExpression expression,
+      SubmitRequirementExpressionResult result,
+      boolean hide) {
     SubmitRequirementExpressionInfo info = new SubmitRequirementExpressionInfo();
-    info.expression = expression.expressionString();
+    info.expression = hide ? null : expression.expressionString();
     info.fulfilled = result.status().equals(SubmitRequirementExpressionResult.Status.PASS);
-    info.passingAtoms = result.passingAtoms();
-    info.failingAtoms = result.failingAtoms();
+    info.passingAtoms = hide ? null : result.passingAtoms();
+    info.failingAtoms = hide ? null : result.failingAtoms();
     return info;
   }
 }
diff --git a/javatests/com/google/gerrit/acceptance/api/change/ChangeIT.java b/javatests/com/google/gerrit/acceptance/api/change/ChangeIT.java
index 2e1bd54..58c222a 100644
--- a/javatests/com/google/gerrit/acceptance/api/change/ChangeIT.java
+++ b/javatests/com/google/gerrit/acceptance/api/change/ChangeIT.java
@@ -89,6 +89,7 @@
 import com.google.gerrit.acceptance.testsuite.project.ProjectOperations;
 import com.google.gerrit.acceptance.testsuite.request.RequestScopeOperations;
 import com.google.gerrit.common.FooterConstants;
+import com.google.gerrit.common.Nullable;
 import com.google.gerrit.common.RawInputUtil;
 import com.google.gerrit.common.data.GlobalCapability;
 import com.google.gerrit.entities.Account;
@@ -153,6 +154,7 @@
 import com.google.gerrit.extensions.common.LegacySubmitRequirementInfo;
 import com.google.gerrit.extensions.common.RevisionInfo;
 import com.google.gerrit.extensions.common.SubmitRecordInfo;
+import com.google.gerrit.extensions.common.SubmitRequirementExpressionInfo;
 import com.google.gerrit.extensions.common.SubmitRequirementInput;
 import com.google.gerrit.extensions.common.SubmitRequirementResultInfo;
 import com.google.gerrit.extensions.common.SubmitRequirementResultInfo.Status;
@@ -5059,6 +5061,35 @@
   }
 
   @Test
+  @GerritConfig(
+      name = "experiments.enabled",
+      value = ExperimentFeaturesConstants.GERRIT_BACKEND_REQUEST_FEATURE_ENABLE_SUBMIT_REQUIREMENTS)
+  public void submitRequirement_applicabilityExpressionIsAlwaysHidden() throws Exception {
+    configSubmitRequirement(
+        project,
+        SubmitRequirement.builder()
+            .setName("Code-Review")
+            .setApplicabilityExpression(SubmitRequirementExpression.of("branch:refs/heads/master"))
+            .setSubmittabilityExpression(SubmitRequirementExpression.create("label:Code-Review=+2"))
+            .setAllowOverrideInChildProjects(false)
+            .build());
+
+    PushOneCommit.Result r = createChange();
+    String changeId = r.getChangeId();
+
+    voteLabel(changeId, "Code-Review", 2);
+    ChangeInfo changeInfo = gApi.changes().id(changeId).get();
+    SubmitRequirementResultInfo requirement =
+        changeInfo.submitRequirements.stream().collect(MoreCollectors.onlyElement());
+    assertSubmitRequirementExpression(
+        requirement.applicabilityExpressionResult,
+        /* expression= */ null,
+        /* passingAtoms= */ null,
+        /* failingAtoms= */ null,
+        /* fulfilled= */ true);
+  }
+
+  @Test
   public void submitRequirements_notServedIfExperimentNotEnabled() throws Exception {
     configSubmitRequirement(
         project,
@@ -5675,6 +5706,26 @@
                 .collect(toImmutableList())));
   }
 
+  private void assertSubmitRequirementExpression(
+      SubmitRequirementExpressionInfo result,
+      @Nullable String expression,
+      @Nullable List<String> passingAtoms,
+      @Nullable List<String> failingAtoms,
+      boolean fulfilled) {
+    assertThat(result.expression).isEqualTo(expression);
+    if (passingAtoms == null) {
+      assertThat(result.passingAtoms).isNull();
+    } else {
+      assertThat(result.passingAtoms).containsExactlyElementsIn(passingAtoms);
+    }
+    if (failingAtoms == null) {
+      assertThat(result.failingAtoms).isNull();
+    } else {
+      assertThat(result.failingAtoms).containsExactlyElementsIn(failingAtoms);
+    }
+    assertThat(result.fulfilled).isEqualTo(fulfilled);
+  }
+
   private Project.NameKey createProjectForPush(SubmitType submitType) throws Exception {
     Project.NameKey project = projectOperations.newProject().submitType(submitType).create();
     projectOperations