diff --git a/src/EventListener/OrganizationListingTemplateDataListener.php b/src/EventListener/OrganizationListingTemplateDataListener.php
new file mode 100644
index 0000000..6b8932c
--- /dev/null
+++ b/src/EventListener/OrganizationListingTemplateDataListener.php
@@ -0,0 +1,281 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MummertMedia\EventManagerBundle\EventListener;
+
+use Contao\CoreBundle\DependencyInjection\Attribute\AsHook;
+use Contao\StringUtil;
+use Contao\Template;
+use Doctrine\DBAL\ArrayParameterType;
+use Doctrine\DBAL\Connection;
+use Doctrine\DBAL\ParameterType;
+
+#[AsHook('parseTemplate', method: 'onParseTemplate')]
+class OrganizationListingTemplateDataListener
+{
+    public function __construct(
+        private readonly Connection $connection,
+    ) {
+    }
+
+    public function onParseTemplate(Template $template): void
+    {
+        if ('list_default_organisationen' !== (string) $template->getName()) {
+            return;
+        }
+
+        $tbody = $template->tbody;
+
+        if (!\is_array($tbody) || [] === $tbody) {
+            return;
+        }
+
+        $rowToOrganizationIdMap = [];
+
+        foreach ($tbody as $rowIndex => $row) {
+            if (!\is_array($row)) {
+                continue;
+            }
+
+            $organizationId = $this->extractOrganizationId($row);
+
+            if ($organizationId > 0) {
+                $rowToOrganizationIdMap[(int) $rowIndex] = $organizationId;
+            }
+        }
+
+        if ([] === $rowToOrganizationIdMap) {
+            return;
+        }
+
+        $organizationTagMap = $this->fetchOrganizationTagMap(array_values(array_unique(array_values($rowToOrganizationIdMap))));
+        $organizationLogoUuidMap = $this->fetchOrganizationLogoUuidMap(array_values(array_unique(array_values($rowToOrganizationIdMap))));
+
+        foreach ($rowToOrganizationIdMap as $rowIndex => $organizationId) {
+            $tagData = $organizationTagMap[$organizationId] ?? ['labels' => [], 'slugs' => []];
+            $logoUuid = $organizationLogoUuidMap[$organizationId] ?? '';
+
+            if (!isset($tbody[$rowIndex]) || !\is_array($tbody[$rowIndex])) {
+                continue;
+            }
+
+            $tbody[$rowIndex]['tag_labels']['content'] = implode(', ', $tagData['labels']);
+            $tbody[$rowIndex]['tag_slugs']['content'] = implode(',', $tagData['slugs']);
+            $tbody[$rowIndex]['tags']['content'] = implode(', ', $tagData['labels']);
+
+            if ('' !== $logoUuid) {
+                $tbody[$rowIndex]['logo_uuid']['content'] = $logoUuid;
+            }
+        }
+
+        $template->tbody = $tbody;
+    }
+
+    /** @param array<string, mixed> $row */
+    private function extractOrganizationId(array $row): int
+    {
+        foreach (['id', 'organization_id', 'org_id'] as $fieldName) {
+            $value = $this->extractRowFieldContent($row, $fieldName);
+
+            if ('' !== $value && ctype_digit($value)) {
+                return (int) $value;
+            }
+        }
+
+        $urlCandidates = [];
+
+        foreach ($row as $column) {
+            if (!\is_array($column)) {
+                continue;
+            }
+
+            if (isset($column['url']) && \is_scalar($column['url'])) {
+                $urlCandidates[] = (string) $column['url'];
+            }
+
+            if (isset($column['href']) && \is_scalar($column['href'])) {
+                $urlCandidates[] = (string) $column['href'];
+            }
+        }
+
+        foreach ($urlCandidates as $url) {
+            $organizationId = $this->extractIdFromUrl($url);
+
+            if ($organizationId > 0) {
+                return $organizationId;
+            }
+        }
+
+        return 0;
+    }
+
+    /** @param array<string, mixed> $row */
+    private function extractRowFieldContent(array $row, string $fieldName): string
+    {
+        if (!isset($row[$fieldName]) || !\is_array($row[$fieldName])) {
+            return '';
+        }
+
+        $field = $row[$fieldName];
+
+        if (!isset($field['content']) || !\is_scalar($field['content'])) {
+            return '';
+        }
+
+        return trim((string) $field['content']);
+    }
+
+    private function extractIdFromUrl(string $url): int
+    {
+        $parts = parse_url($url);
+
+        if (!\is_array($parts) || !isset($parts['query'])) {
+            return 0;
+        }
+
+        parse_str((string) $parts['query'], $query);
+
+        foreach (['show', 'id'] as $queryKey) {
+            if (!isset($query[$queryKey])) {
+                continue;
+            }
+
+            $value = $query[$queryKey];
+
+            if (\is_scalar($value) && ctype_digit((string) $value)) {
+                return (int) $value;
+            }
+        }
+
+        return 0;
+    }
+
+    /** @param list<int> $organizationIds
+     *  @return array<int, array{labels: list<string>, slugs: list<string>}>
+     */
+    private function fetchOrganizationTagMap(array $organizationIds): array
+    {
+        if ([] === $organizationIds) {
+            return [];
+        }
+
+        $rows = $this->connection->executeQuery(
+            'SELECT r.pid AS organization_id, r.tag_id, t.tag AS label FROM tl_tags_rel r INNER JOIN tl_tags t ON t.id = r.tag_id WHERE r.ptable = ? AND r.field = ? AND r.pid IN (?) ORDER BY r.pid ASC, r.tag_id ASC',
+            ['tl_organization', 'tags', $organizationIds],
+            [ParameterType::STRING, ParameterType::STRING, ArrayParameterType::INTEGER],
+        )->fetchAllAssociative();
+
+        $map = [];
+        $seen = [];
+
+        foreach ($rows as $row) {
+            $organizationId = (int) ($row['organization_id'] ?? 0);
+            $tagId = (int) ($row['tag_id'] ?? 0);
+            $label = trim((string) ($row['label'] ?? ''));
+
+            if ($organizationId <= 0 || $tagId <= 0 || '' === $label) {
+                continue;
+            }
+
+            if (isset($seen[$organizationId][$tagId])) {
+                continue;
+            }
+
+            $seen[$organizationId][$tagId] = true;
+            $map[$organizationId]['labels'][] = $label;
+
+            $slug = $this->slugify($label);
+
+            if ('' !== $slug) {
+                $map[$organizationId]['slugs'][] = $slug;
+            }
+        }
+
+        foreach ($map as $organizationId => $tagData) {
+            $map[$organizationId]['labels'] = array_values(array_unique($tagData['labels'] ?? []));
+            $map[$organizationId]['slugs'] = array_values(array_unique($tagData['slugs'] ?? []));
+        }
+
+        return $map;
+    }
+
+    /** @param list<int> $organizationIds
+     *  @return array<int, string>
+     */
+    private function fetchOrganizationLogoUuidMap(array $organizationIds): array
+    {
+        if ([] === $organizationIds) {
+            return [];
+        }
+
+        $rows = $this->connection->executeQuery(
+            'SELECT o.id AS organization_id, o.logo AS logo_uuid FROM tl_organization o WHERE o.id IN (?)',
+            [$organizationIds],
+            [ArrayParameterType::INTEGER],
+        )->fetchAllAssociative();
+
+        $map = [];
+
+        foreach ($rows as $row) {
+            $organizationId = (int) ($row['organization_id'] ?? 0);
+            $logoUuid = $this->normalizeUuid($row['logo_uuid'] ?? null);
+
+            if ($organizationId <= 0 || '' === $logoUuid) {
+                continue;
+            }
+
+            $map[$organizationId] = $logoUuid;
+        }
+
+        return $map;
+    }
+
+    private function normalizeUuid(mixed $value): string
+    {
+        if (null === $value) {
+            return '';
+        }
+
+        if (\is_resource($value)) {
+            $value = stream_get_contents($value) ?: '';
+        }
+
+        $trimmed = trim((string) $value);
+
+        if ('' === $trimmed) {
+            return '';
+        }
+
+        if (preg_match('/^[0-9a-fA-F-]{36}$/', $trimmed)) {
+            return strtolower($trimmed);
+        }
+
+        if (16 === strlen($trimmed)) {
+            return StringUtil::binToUuid($trimmed);
+        }
+
+        return '';
+    }
+
+    private function slugify(string $value): string
+    {
+        $value = trim(mb_strtolower($value));
+
+        if ('' === $value) {
+            return '';
+        }
+
+        $value = strtr($value, [
+            'ä' => 'ae',
+            'ö' => 'oe',
+            'ü' => 'ue',
+            'ß' => 'ss',
+        ]);
+
+        $value = preg_replace('/[^a-z0-9]+/u', '-', $value) ?? '';
+        $value = trim($value, '-');
+
+        return $value;
+    }
+}