Index: src/wp-includes/class-wp-user-query.php
===================================================================
--- src/wp-includes/class-wp-user-query.php	(revision 42959)
+++ src/wp-includes/class-wp-user-query.php	(working copy)
@@ -613,6 +613,16 @@
 			$this->total_users = (int) $wpdb->get_var( apply_filters( 'found_users_query', 'SELECT FOUND_ROWS()' ) );
 		}
 
+		/**
+		 * Filters the raw user / user fields results array.
+		 *
+		 * @since 5.0.0
+		 *
+		 * @param Array Array of users / user fields
+		 * @param WP_User_Query $this The WP_User_Query instance (passed by reference).
+		 */
+		$this->results = apply_filters_ref_array( 'users_results', array( $this->results, &$this ) );
+
 		if ( ! $this->results ) {
 			return;
 		}