diff --git a/wordpress.org/public_html/wp-content/plugins/wporg-gp-translation-events/templates/event-details.php b/wordpress.org/public_html/wp-content/plugins/wporg-gp-translation-events/templates/event-details.php
index b7815f3d48..734993ad90 100644
--- a/wordpress.org/public_html/wp-content/plugins/wporg-gp-translation-events/templates/event-details.php
+++ b/wordpress.org/public_html/wp-content/plugins/wporg-gp-translation-events/templates/event-details.php
@@ -109,7 +109,7 @@ function ( $host ) {
 				</ul>
 			</div>
 		<?php endif; ?>
-		<?php if ( ! empty( $attendees_not_contributing ) && current_user_can( 'edit_translation_event', $event->id() ) ) : ?>
+		<?php if ( ! empty( $attendees_not_contributing ) && ! $event->is_past() && current_user_can( 'edit_translation_event', $event->id() ) ) : ?>
 			<div class="event-attendees">
 				<h2>
 				<?php
diff --git a/wordpress.org/public_html/wp-content/plugins/wporg-gp-translation-events/tests/routes/Event_Details_Attendees_Test.php b/wordpress.org/public_html/wp-content/plugins/wporg-gp-translation-events/tests/routes/Event_Details_Attendees_Test.php
new file mode 100644
index 0000000000..250d02ce49
--- /dev/null
+++ b/wordpress.org/public_html/wp-content/plugins/wporg-gp-translation-events/tests/routes/Event_Details_Attendees_Test.php
@@ -0,0 +1,98 @@
+<?php
+/**
+ * Tests that the attendees section on the event details page is only shown
+ * while the event is active.
+ *
+ * @package wporg-gp-translation-events
+ */
+
+declare( strict_types = 1 );
+
+use Wporg\Tests\Base_Test as TestCase;
+use Wporg\TranslationEvents\Routes\Event\Details_Route;
+use Wporg\TranslationEvents\Tests\Event_Factory;
+
+/**
+ * The event details page lists attendees who pledged to help but did not end
+ * up contributing. Once an event is over, that list should no longer be
+ * shown, so a no-show is not called out publicly after the fact. This change
+ * hides the list in both the template renderer and the 2024 block theme
+ * renderer.
+ *
+ * These tests render the details route for an event that is still active and
+ * for one that has ended, and assert the attendees section is present only
+ * while the event is active. The current user is granted event management
+ * rights so the capability gate on the section is satisfied and the event
+ * state is the only variable under test.
+ */
+class Event_Details_Attendees_Test extends TestCase {
+	/**
+	 * Factory used to create events for the tests.
+	 *
+	 * @var Event_Factory
+	 */
+	private Event_Factory $event_factory;
+
+	/**
+	 * Set up the factory and a user who is allowed to see the section.
+	 *
+	 * @return void
+	 */
+	public function setUp(): void {
+		parent::setUp();
+
+		$this->event_factory = new Event_Factory();
+
+		wp_set_current_user( $this->factory->user->create() );
+		add_filter( 'gp_translation_events_can_crud_event', '__return_true' );
+	}
+
+	/**
+	 * Remove the capability filter.
+	 *
+	 * @return void
+	 */
+	public function tearDown(): void {
+		remove_filter( 'gp_translation_events_can_crud_event', '__return_true' );
+		parent::tearDown();
+	}
+
+	/**
+	 * The attendees section is shown while the event is active.
+	 *
+	 * @return void
+	 */
+	public function test_shows_attendees_for_active_event() {
+		$event_id = $this->event_factory->create_active( $this->now, array( $this->factory->user->create() ) );
+
+		$this->assertStringContainsString( 'event-attendees', $this->render_event_details( $event_id ) );
+	}
+
+	/**
+	 * The attendees section is hidden once the event has ended.
+	 *
+	 * @return void
+	 */
+	public function test_hides_attendees_for_past_event() {
+		$event_id = $this->event_factory->create_inactive_past( $this->now, array( $this->factory->user->create() ) );
+
+		$this->assertStringNotContainsString( 'event-attendees', $this->render_event_details( $event_id ) );
+	}
+
+	/**
+	 * Render the details route for an event and return the generated HTML.
+	 *
+	 * @param int $event_id Event to render.
+	 * @return string
+	 */
+	private function render_event_details( int $event_id ): string {
+		wp_cache_flush();
+
+		$route               = new Details_Route();
+		$route->fake_request = true;
+
+		ob_start();
+		$route->handle( get_post( $event_id )->post_name );
+		return (string) ob_get_clean();
+	}
+}
diff --git a/wordpress.org/public_html/wp-content/plugins/wporg-gp-translation-events/themes/wporg-translate-events-2024/blocks/pages/events/event-details/render.php b/wordpress.org/public_html/wp-content/plugins/wporg-gp-translation-events/themes/wporg-translate-events-2024/blocks/pages/events/event-details/render.php
index 9dcd41edff..b979317582 100644
--- a/wordpress.org/public_html/wp-content/plugins/wporg-gp-translation-events/themes/wporg-translate-events-2024/blocks/pages/events/event-details/render.php
+++ b/wordpress.org/public_html/wp-content/plugins/wporg-gp-translation-events/themes/wporg-translate-events-2024/blocks/pages/events/event-details/render.php
@@ -52,17 +52,19 @@
 
 <!-- wp:wporg-translate-events-2024/event-description <?php echo serialize_block_attributes( array( 'id' => $event->id() ) ); ?> /-->
 <!-- wp:wporg-translate-events-2024/contributor-list <?php echo serialize_block_attributes( array( 'id' => $event->id() ) ); ?> /-->
+<?php if ( ! $event->is_past() ) : ?>
 <!-- wp:wporg-translate-events-2024/attendee-list
-<?php
-echo serialize_block_attributes(
-	array(
-		'id'        => $event->id(),
-		'view_type' => 'list',
-	)
-);
-?>
+	<?php
+	echo serialize_block_attributes(
+		array(
+			'id'        => $event->id(),
+			'view_type' => 'list',
+		)
+	);
+	?>
 
 /-->
+<?php endif; ?>
 <!-- wp:wporg-translate-events-2024/event-stats <?php echo serialize_block_attributes( array( 'id' => $event->id() ) ); ?> /-->
 <!-- wp:wporg-translate-events-2024/event-projects <?php echo serialize_block_attributes( array( 'id' => $event->id() ) ); ?> /-->
 <!-- wp:wporg-translate-events-2024/event-contribution-summary <?php echo serialize_block_attributes( array( 'id' => $event->id() ) ); ?> /-->