Yes, it is possible:
<?php
global $post;
$current_post = $post;
if ( $post->post_parent ) {
$siblings = new WP_Query( array(
'post_type' => 'page',
'order' => 'ASC',
'post_parent' => $post->post_parent
) );
}
if ( $siblings->have_posts() ) :
?>
<ul>
<?php while ( $siblings->have_posts() ) : $siblings->the_post(); ?>
<li><a href="https://wordpress.stackexchange.com/questions/306078/<?php the_permalink(); ?>">
<?php if ( $current_post->ID == $post->ID ) echo 'Actual page: '; ?>
<?php the_title(); ?>
</a></li>
<?php endwhile; wp_reset_postdata(); ?>
</ul>
<?php endif; ?>