diff --git a/apps/dav/lib/AppInfo/Application.php b/apps/dav/lib/AppInfo/Application.php
index ac0ddaa8558..c8ab1a06f9e 100644
--- a/apps/dav/lib/AppInfo/Application.php
+++ b/apps/dav/lib/AppInfo/Application.php
@@ -31,12 +31,6 @@ use OCA\DAV\Events\AddressBookUpdatedEvent;
 use OCA\DAV\Events\CalendarCreatedEvent;
 use OCA\DAV\Events\CalendarDeletedEvent;
 use OCA\DAV\Events\CalendarMovedToTrashEvent;
-use OCA\DAV\Events\CalendarObjectCreatedEvent;
-use OCA\DAV\Events\CalendarObjectDeletedEvent;
-use OCA\DAV\Events\CalendarObjectMovedEvent;
-use OCA\DAV\Events\CalendarObjectMovedToTrashEvent;
-use OCA\DAV\Events\CalendarObjectRestoredEvent;
-use OCA\DAV\Events\CalendarObjectUpdatedEvent;
 use OCA\DAV\Events\CalendarPublishedEvent;
 use OCA\DAV\Events\CalendarRestoredEvent;
 use OCA\DAV\Events\CalendarShareUpdatedEvent;
@@ -76,6 +70,12 @@ use OCP\AppFramework\Bootstrap\IBootContext;
 use OCP\AppFramework\Bootstrap\IBootstrap;
 use OCP\AppFramework\Bootstrap\IRegistrationContext;
 use OCP\AppFramework\IAppContainer;
+use OCP\Calendar\Events\CalendarObjectCreatedEvent;
+use OCP\Calendar\Events\CalendarObjectDeletedEvent;
+use OCP\Calendar\Events\CalendarObjectMovedEvent;
+use OCP\Calendar\Events\CalendarObjectMovedToTrashEvent;
+use OCP\Calendar\Events\CalendarObjectRestoredEvent;
+use OCP\Calendar\Events\CalendarObjectUpdatedEvent;
 use OCP\Calendar\IManager as ICalendarManager;
 use OCP\Config\BeforePreferenceDeletedEvent;
 use OCP\Config\BeforePreferenceSetEvent;
diff --git a/apps/dav/lib/CalDAV/CalDavBackend.php b/apps/dav/lib/CalDAV/CalDavBackend.php
index 0c8b52a7491..75ac6c942c8 100644
--- a/apps/dav/lib/CalDAV/CalDavBackend.php
+++ b/apps/dav/lib/CalDAV/CalDavBackend.php
@@ -19,12 +19,12 @@ use OCA\DAV\Events\CachedCalendarObjectUpdatedEvent;
 use OCA\DAV\Events\CalendarCreatedEvent;
 use OCA\DAV\Events\CalendarDeletedEvent;
 use OCA\DAV\Events\CalendarMovedToTrashEvent;
-use OCA\DAV\Events\CalendarObjectCreatedEvent;
-use OCA\DAV\Events\CalendarObjectDeletedEvent;
-use OCA\DAV\Events\CalendarObjectMovedEvent;
-use OCA\DAV\Events\CalendarObjectMovedToTrashEvent;
-use OCA\DAV\Events\CalendarObjectRestoredEvent;
-use OCA\DAV\Events\CalendarObjectUpdatedEvent;
+use OCA\DAV\Events\CalendarObjectCreatedEvent as LegacyCalendarObjectCreatedEvent;
+use OCA\DAV\Events\CalendarObjectDeletedEvent as LegacyCalendarObjectDeletedEvent;
+use OCA\DAV\Events\CalendarObjectMovedEvent as LegacyCalendarObjectMovedEvent;
+use OCA\DAV\Events\CalendarObjectMovedToTrashEvent as LegacyCalendarObjectMovedToTrashEvent;
+use OCA\DAV\Events\CalendarObjectRestoredEvent as LegacyCalendarObjectRestoredEvent;
+use OCA\DAV\Events\CalendarObjectUpdatedEvent as LegacyCalendarObjectUpdatedEvent;
 use OCA\DAV\Events\CalendarPublishedEvent;
 use OCA\DAV\Events\CalendarRestoredEvent;
 use OCA\DAV\Events\CalendarShareUpdatedEvent;
@@ -34,6 +34,12 @@ use OCA\DAV\Events\SubscriptionCreatedEvent;
 use OCA\DAV\Events\SubscriptionDeletedEvent;
 use OCA\DAV\Events\SubscriptionUpdatedEvent;
 use OCP\AppFramework\Db\TTransactional;
+use OCP\Calendar\Events\CalendarObjectCreatedEvent;
+use OCP\Calendar\Events\CalendarObjectDeletedEvent;
+use OCP\Calendar\Events\CalendarObjectMovedEvent;
+use OCP\Calendar\Events\CalendarObjectMovedToTrashEvent;
+use OCP\Calendar\Events\CalendarObjectRestoredEvent;
+use OCP\Calendar\Events\CalendarObjectUpdatedEvent;
 use OCP\Calendar\Exceptions\CalendarException;
 use OCP\DB\Exception;
 use OCP\DB\QueryBuilder\IQueryBuilder;
@@ -1318,6 +1324,7 @@ class CalDavBackend extends AbstractBackend implements SyncSupport, Subscription
 				$shares = $this->getShares($calendarId);
 
 				$this->dispatcher->dispatchTyped(new CalendarObjectCreatedEvent($calendarId, $calendarRow, $shares, $objectRow));
+				$this->dispatcher->dispatchTyped(new LegacyCalendarObjectCreatedEvent($calendarId, $calendarRow, $shares, $objectRow));
 			} else {
 				$subscriptionRow = $this->getSubscriptionById($calendarId);
 
@@ -1378,6 +1385,7 @@ class CalDavBackend extends AbstractBackend implements SyncSupport, Subscription
 					$shares = $this->getShares($calendarId);
 
 					$this->dispatcher->dispatchTyped(new CalendarObjectUpdatedEvent($calendarId, $calendarRow, $shares, $objectRow));
+					$this->dispatcher->dispatchTyped(new LegacyCalendarObjectUpdatedEvent($calendarId, $calendarRow, $shares, $objectRow));
 				} else {
 					$subscriptionRow = $this->getSubscriptionById($calendarId);
 
@@ -1439,6 +1447,7 @@ class CalDavBackend extends AbstractBackend implements SyncSupport, Subscription
 				$targetShares = $this->getShares($targetCalendarId);
 				$sourceCalendarRow = $this->getCalendarById($sourceCalendarId);
 				$this->dispatcher->dispatchTyped(new CalendarObjectMovedEvent($sourceCalendarId, $sourceCalendarRow, $targetCalendarId, $targetCalendarRow, $sourceShares, $targetShares, $object));
+				$this->dispatcher->dispatchTyped(new LegacyCalendarObjectMovedEvent($sourceCalendarId, $sourceCalendarRow, $targetCalendarId, $targetCalendarRow, $sourceShares, $targetShares, $object));
 			}
 			return true;
 		}, $this->db);
@@ -1497,6 +1506,7 @@ class CalDavBackend extends AbstractBackend implements SyncSupport, Subscription
 					$shares = $this->getShares($calendarId);
 
 					$this->dispatcher->dispatchTyped(new CalendarObjectDeletedEvent($calendarId, $calendarRow, $shares, $data));
+					$this->dispatcher->dispatchTyped(new LegacyCalendarObjectDeletedEvent($calendarId, $calendarRow, $shares, $data));
 				} else {
 					$subscriptionRow = $this->getSubscriptionById($calendarId);
 
@@ -1546,6 +1556,14 @@ class CalDavBackend extends AbstractBackend implements SyncSupport, Subscription
 							$data
 						)
 					);
+					$this->dispatcher->dispatchTyped(
+						new LegacyCalendarObjectMovedToTrashEvent(
+							$calendarId,
+							$calendarData,
+							$this->getShares($calendarId),
+							$data
+						)
+					);
 				}
 			}
 
@@ -1605,6 +1623,14 @@ class CalDavBackend extends AbstractBackend implements SyncSupport, Subscription
 					$row
 				)
 			);
+			$this->dispatcher->dispatchTyped(
+				new LegacyCalendarObjectRestoredEvent(
+					(int)$objectData['calendarid'],
+					$calendarRow,
+					$this->getShares((int)$row['calendarid']),
+					$row
+				)
+			);
 		}, $this->db);
 	}
 
diff --git a/apps/dav/lib/Events/CalendarObjectCreatedEvent.php b/apps/dav/lib/Events/CalendarObjectCreatedEvent.php
index 187ded2dcd4..1227b81e773 100644
--- a/apps/dav/lib/Events/CalendarObjectCreatedEvent.php
+++ b/apps/dav/lib/Events/CalendarObjectCreatedEvent.php
@@ -15,6 +15,7 @@ use OCP\EventDispatcher\Event;
  *
  * @package OCA\DAV\Events
  * @since 20.0.0
+ * @deprecated 31.0.2 Use {@see \OCP\Calendar\Events\CalendarObjectCreatedEvent} instead
  */
 class CalendarObjectCreatedEvent extends Event {
 
diff --git a/apps/dav/lib/Events/CalendarObjectDeletedEvent.php b/apps/dav/lib/Events/CalendarObjectDeletedEvent.php
index 9928080f99b..abbcaf21344 100644
--- a/apps/dav/lib/Events/CalendarObjectDeletedEvent.php
+++ b/apps/dav/lib/Events/CalendarObjectDeletedEvent.php
@@ -15,6 +15,7 @@ use OCP\EventDispatcher\Event;
  *
  * @package OCA\DAV\Events
  * @since 20.0.0
+ * @deprecated 31.0.2 Use {@see \OCP\Calendar\Events\CalendarObjectDeletedEvent} instead
  */
 class CalendarObjectDeletedEvent extends Event {
 
diff --git a/apps/dav/lib/Events/CalendarObjectMovedEvent.php b/apps/dav/lib/Events/CalendarObjectMovedEvent.php
index 0b57919ddc9..b5252ebc9e0 100644
--- a/apps/dav/lib/Events/CalendarObjectMovedEvent.php
+++ b/apps/dav/lib/Events/CalendarObjectMovedEvent.php
@@ -15,6 +15,7 @@ use OCP\EventDispatcher\Event;
  *
  * @package OCA\DAV\Events
  * @since 25.0.0
+ * @deprecated 31.0.2 Use {@see \OCP\Calendar\Events\CalendarObjectMovedEvent} instead
  */
 class CalendarObjectMovedEvent extends Event {
 	/**
diff --git a/apps/dav/lib/Events/CalendarObjectMovedToTrashEvent.php b/apps/dav/lib/Events/CalendarObjectMovedToTrashEvent.php
index a26aca4ff2b..548824e17cb 100644
--- a/apps/dav/lib/Events/CalendarObjectMovedToTrashEvent.php
+++ b/apps/dav/lib/Events/CalendarObjectMovedToTrashEvent.php
@@ -12,6 +12,7 @@ use OCP\EventDispatcher\Event;
 
 /**
  * @since 22.0.0
+ * @deprecated 31.0.2 Use {@see \OCP\Calendar\Events\CalendarObjectMovedToTrashEvent} instead
  */
 class CalendarObjectMovedToTrashEvent extends Event {
 
diff --git a/apps/dav/lib/Events/CalendarObjectRestoredEvent.php b/apps/dav/lib/Events/CalendarObjectRestoredEvent.php
index 99d752de466..29e7148225d 100644
--- a/apps/dav/lib/Events/CalendarObjectRestoredEvent.php
+++ b/apps/dav/lib/Events/CalendarObjectRestoredEvent.php
@@ -12,6 +12,7 @@ use OCP\EventDispatcher\Event;
 
 /**
  * @since 22.0.0
+ * @deprecated 31.0.2 Use {@see \OCP\Calendar\Events\CalendarObjectRestoredEvent} instead
  */
 class CalendarObjectRestoredEvent extends Event {
 
diff --git a/apps/dav/lib/Events/CalendarObjectUpdatedEvent.php b/apps/dav/lib/Events/CalendarObjectUpdatedEvent.php
index 8c4b843609d..01d684dc6b2 100644
--- a/apps/dav/lib/Events/CalendarObjectUpdatedEvent.php
+++ b/apps/dav/lib/Events/CalendarObjectUpdatedEvent.php
@@ -15,6 +15,7 @@ use OCP\EventDispatcher\Event;
  *
  * @package OCA\DAV\Events
  * @since 20.0.0
+ * @deprecated 31.0.2 Use {@see \OCP\Calendar\Events\CalendarObjectUpdatedEvent} instead
  */
 class CalendarObjectUpdatedEvent extends Event {
 
diff --git a/apps/dav/lib/Listener/ActivityUpdaterListener.php b/apps/dav/lib/Listener/ActivityUpdaterListener.php
index 700bc2f306c..f291e424c41 100644
--- a/apps/dav/lib/Listener/ActivityUpdaterListener.php
+++ b/apps/dav/lib/Listener/ActivityUpdaterListener.php
@@ -13,14 +13,14 @@ use OCA\DAV\DAV\Sharing\Plugin;
 use OCA\DAV\Events\CalendarCreatedEvent;
 use OCA\DAV\Events\CalendarDeletedEvent;
 use OCA\DAV\Events\CalendarMovedToTrashEvent;
-use OCA\DAV\Events\CalendarObjectCreatedEvent;
-use OCA\DAV\Events\CalendarObjectDeletedEvent;
-use OCA\DAV\Events\CalendarObjectMovedEvent;
-use OCA\DAV\Events\CalendarObjectMovedToTrashEvent;
-use OCA\DAV\Events\CalendarObjectRestoredEvent;
-use OCA\DAV\Events\CalendarObjectUpdatedEvent;
 use OCA\DAV\Events\CalendarRestoredEvent;
 use OCA\DAV\Events\CalendarUpdatedEvent;
+use OCP\Calendar\Events\CalendarObjectCreatedEvent;
+use OCP\Calendar\Events\CalendarObjectDeletedEvent;
+use OCP\Calendar\Events\CalendarObjectMovedEvent;
+use OCP\Calendar\Events\CalendarObjectMovedToTrashEvent;
+use OCP\Calendar\Events\CalendarObjectRestoredEvent;
+use OCP\Calendar\Events\CalendarObjectUpdatedEvent;
 use OCP\EventDispatcher\Event;
 use OCP\EventDispatcher\IEventListener;
 use Psr\Log\LoggerInterface;
diff --git a/apps/dav/lib/Listener/CalendarContactInteractionListener.php b/apps/dav/lib/Listener/CalendarContactInteractionListener.php
index 8e574e150cd..a7f00e452c4 100644
--- a/apps/dav/lib/Listener/CalendarContactInteractionListener.php
+++ b/apps/dav/lib/Listener/CalendarContactInteractionListener.php
@@ -9,9 +9,9 @@ declare(strict_types=1);
 namespace OCA\DAV\Listener;
 
 use OCA\DAV\Connector\Sabre\Principal;
-use OCA\DAV\Events\CalendarObjectCreatedEvent;
-use OCA\DAV\Events\CalendarObjectUpdatedEvent;
 use OCA\DAV\Events\CalendarShareUpdatedEvent;
+use OCP\Calendar\Events\CalendarObjectCreatedEvent;
+use OCP\Calendar\Events\CalendarObjectUpdatedEvent;
 use OCP\Contacts\Events\ContactInteractedWithEvent;
 use OCP\EventDispatcher\Event;
 use OCP\EventDispatcher\IEventDispatcher;
diff --git a/apps/dav/lib/Listener/CalendarObjectReminderUpdaterListener.php b/apps/dav/lib/Listener/CalendarObjectReminderUpdaterListener.php
index 544c88af929..a58fb3524ab 100644
--- a/apps/dav/lib/Listener/CalendarObjectReminderUpdaterListener.php
+++ b/apps/dav/lib/Listener/CalendarObjectReminderUpdaterListener.php
@@ -13,12 +13,12 @@ use OCA\DAV\CalDAV\Reminder\Backend as ReminderBackend;
 use OCA\DAV\CalDAV\Reminder\ReminderService;
 use OCA\DAV\Events\CalendarDeletedEvent;
 use OCA\DAV\Events\CalendarMovedToTrashEvent;
-use OCA\DAV\Events\CalendarObjectCreatedEvent;
-use OCA\DAV\Events\CalendarObjectDeletedEvent;
-use OCA\DAV\Events\CalendarObjectMovedToTrashEvent;
-use OCA\DAV\Events\CalendarObjectRestoredEvent;
-use OCA\DAV\Events\CalendarObjectUpdatedEvent;
 use OCA\DAV\Events\CalendarRestoredEvent;
+use OCP\Calendar\Events\CalendarObjectCreatedEvent;
+use OCP\Calendar\Events\CalendarObjectDeletedEvent;
+use OCP\Calendar\Events\CalendarObjectMovedToTrashEvent;
+use OCP\Calendar\Events\CalendarObjectRestoredEvent;
+use OCP\Calendar\Events\CalendarObjectUpdatedEvent;
 use OCP\EventDispatcher\Event;
 use OCP\EventDispatcher\IEventListener;
 use Psr\Log\LoggerInterface;
diff --git a/apps/dav/tests/unit/Listener/ActivityUpdaterListenerTest.php b/apps/dav/tests/unit/Listener/ActivityUpdaterListenerTest.php
index 7b517c93d5d..78769c7fb47 100644
--- a/apps/dav/tests/unit/Listener/ActivityUpdaterListenerTest.php
+++ b/apps/dav/tests/unit/Listener/ActivityUpdaterListenerTest.php
@@ -12,8 +12,8 @@ use OCA\DAV\CalDAV\Activity\Backend as ActivityBackend;
 use OCA\DAV\CalDAV\Activity\Provider\Event;
 use OCA\DAV\DAV\Sharing\Plugin as SharingPlugin;
 use OCA\DAV\Events\CalendarDeletedEvent;
-use OCA\DAV\Events\CalendarObjectDeletedEvent;
 use OCA\DAV\Listener\ActivityUpdaterListener;
+use OCP\Calendar\Events\CalendarObjectDeletedEvent;
 use PHPUnit\Framework\MockObject\MockObject;
 use Psr\Log\LoggerInterface;
 use Test\TestCase;
diff --git a/apps/dav/tests/unit/Listener/CalendarContactInteractionListenerTest.php b/apps/dav/tests/unit/Listener/CalendarContactInteractionListenerTest.php
index f11438858d7..96d8514da41 100644
--- a/apps/dav/tests/unit/Listener/CalendarContactInteractionListenerTest.php
+++ b/apps/dav/tests/unit/Listener/CalendarContactInteractionListenerTest.php
@@ -9,9 +9,9 @@ declare(strict_types=1);
 namespace OCA\DAV\Tests\Unit\Listener;
 
 use OCA\DAV\Connector\Sabre\Principal;
-use OCA\DAV\Events\CalendarObjectCreatedEvent;
 use OCA\DAV\Events\CalendarShareUpdatedEvent;
 use OCA\DAV\Listener\CalendarContactInteractionListener;
+use OCP\Calendar\Events\CalendarObjectCreatedEvent;
 use OCP\Contacts\Events\ContactInteractedWithEvent;
 use OCP\EventDispatcher\Event;
 use OCP\EventDispatcher\IEventDispatcher;
diff --git a/lib/composer/composer/autoload_classmap.php b/lib/composer/composer/autoload_classmap.php
index 04baf068bb5..3ba403dab25 100644
--- a/lib/composer/composer/autoload_classmap.php
+++ b/lib/composer/composer/autoload_classmap.php
@@ -191,6 +191,13 @@ return array(
     'OCP\\Cache\\CappedMemoryCache' => $baseDir . '/lib/public/Cache/CappedMemoryCache.php',
     'OCP\\Calendar\\BackendTemporarilyUnavailableException' => $baseDir . '/lib/public/Calendar/BackendTemporarilyUnavailableException.php',
     'OCP\\Calendar\\CalendarEventStatus' => $baseDir . '/lib/public/Calendar/CalendarEventStatus.php',
+    'OCP\\Calendar\\Events\\AbstractCalendarObjectEvent' => $baseDir . '/lib/public/Calendar/Events/AbstractCalendarObjectEvent.php',
+    'OCP\\Calendar\\Events\\CalendarObjectCreatedEvent' => $baseDir . '/lib/public/Calendar/Events/CalendarObjectCreatedEvent.php',
+    'OCP\\Calendar\\Events\\CalendarObjectDeletedEvent' => $baseDir . '/lib/public/Calendar/Events/CalendarObjectDeletedEvent.php',
+    'OCP\\Calendar\\Events\\CalendarObjectMovedEvent' => $baseDir . '/lib/public/Calendar/Events/CalendarObjectMovedEvent.php',
+    'OCP\\Calendar\\Events\\CalendarObjectMovedToTrashEvent' => $baseDir . '/lib/public/Calendar/Events/CalendarObjectMovedToTrashEvent.php',
+    'OCP\\Calendar\\Events\\CalendarObjectRestoredEvent' => $baseDir . '/lib/public/Calendar/Events/CalendarObjectRestoredEvent.php',
+    'OCP\\Calendar\\Events\\CalendarObjectUpdatedEvent' => $baseDir . '/lib/public/Calendar/Events/CalendarObjectUpdatedEvent.php',
     'OCP\\Calendar\\Exceptions\\CalendarException' => $baseDir . '/lib/public/Calendar/Exceptions/CalendarException.php',
     'OCP\\Calendar\\IAvailabilityResult' => $baseDir . '/lib/public/Calendar/IAvailabilityResult.php',
     'OCP\\Calendar\\ICalendar' => $baseDir . '/lib/public/Calendar/ICalendar.php',
diff --git a/lib/composer/composer/autoload_static.php b/lib/composer/composer/autoload_static.php
index 9da39bb71dc..e2ab6999525 100644
--- a/lib/composer/composer/autoload_static.php
+++ b/lib/composer/composer/autoload_static.php
@@ -240,6 +240,13 @@ class ComposerStaticInit749170dad3f5e7f9ca158f5a9f04f6a2
         'OCP\\Cache\\CappedMemoryCache' => __DIR__ . '/../../..' . '/lib/public/Cache/CappedMemoryCache.php',
         'OCP\\Calendar\\BackendTemporarilyUnavailableException' => __DIR__ . '/../../..' . '/lib/public/Calendar/BackendTemporarilyUnavailableException.php',
         'OCP\\Calendar\\CalendarEventStatus' => __DIR__ . '/../../..' . '/lib/public/Calendar/CalendarEventStatus.php',
+        'OCP\\Calendar\\Events\\AbstractCalendarObjectEvent' => __DIR__ . '/../../..' . '/lib/public/Calendar/Events/AbstractCalendarObjectEvent.php',
+        'OCP\\Calendar\\Events\\CalendarObjectCreatedEvent' => __DIR__ . '/../../..' . '/lib/public/Calendar/Events/CalendarObjectCreatedEvent.php',
+        'OCP\\Calendar\\Events\\CalendarObjectDeletedEvent' => __DIR__ . '/../../..' . '/lib/public/Calendar/Events/CalendarObjectDeletedEvent.php',
+        'OCP\\Calendar\\Events\\CalendarObjectMovedEvent' => __DIR__ . '/../../..' . '/lib/public/Calendar/Events/CalendarObjectMovedEvent.php',
+        'OCP\\Calendar\\Events\\CalendarObjectMovedToTrashEvent' => __DIR__ . '/../../..' . '/lib/public/Calendar/Events/CalendarObjectMovedToTrashEvent.php',
+        'OCP\\Calendar\\Events\\CalendarObjectRestoredEvent' => __DIR__ . '/../../..' . '/lib/public/Calendar/Events/CalendarObjectRestoredEvent.php',
+        'OCP\\Calendar\\Events\\CalendarObjectUpdatedEvent' => __DIR__ . '/../../..' . '/lib/public/Calendar/Events/CalendarObjectUpdatedEvent.php',
         'OCP\\Calendar\\Exceptions\\CalendarException' => __DIR__ . '/../../..' . '/lib/public/Calendar/Exceptions/CalendarException.php',
         'OCP\\Calendar\\IAvailabilityResult' => __DIR__ . '/../../..' . '/lib/public/Calendar/IAvailabilityResult.php',
         'OCP\\Calendar\\ICalendar' => __DIR__ . '/../../..' . '/lib/public/Calendar/ICalendar.php',
diff --git a/lib/public/Calendar/Events/AbstractCalendarObjectEvent.php b/lib/public/Calendar/Events/AbstractCalendarObjectEvent.php
new file mode 100644
index 00000000000..111ed096f78
--- /dev/null
+++ b/lib/public/Calendar/Events/AbstractCalendarObjectEvent.php
@@ -0,0 +1,79 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2025 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+namespace OCP\Calendar\Events;
+
+use OCP\EventDispatcher\Event;
+use OCP\EventDispatcher\IWebhookCompatibleEvent;
+
+/**
+ * @since 32.0.0
+ */
+abstract class AbstractCalendarObjectEvent extends Event implements IWebhookCompatibleEvent {
+
+	/**
+	 * @param int $calendarId
+	 * @param array $calendarData
+	 * @param array $shares
+	 * @param array $objectData
+	 * @since 32.0.0
+	 */
+	public function __construct(
+		private int $calendarId,
+		private array $calendarData,
+		private array $shares,
+		private array $objectData,
+	) {
+		parent::__construct();
+	}
+
+	/**
+	 * @return int
+	 * @since 32.0.0
+	 */
+	public function getCalendarId(): int {
+		return $this->calendarId;
+	}
+
+	/**
+	 * @return array
+	 * @since 32.0.0
+	 */
+	public function getCalendarData(): array {
+		return $this->calendarData;
+	}
+
+	/**
+	 * @return array
+	 * @since 32.0.0
+	 */
+	public function getShares(): array {
+		return $this->shares;
+	}
+
+	/**
+	 * @return array
+	 * @since 32.0.0
+	 */
+	public function getObjectData(): array {
+		return $this->objectData;
+	}
+
+	/**
+	 * @return array
+	 * @since 32.0.0
+	 */
+	public function getWebhookSerializable(): array {
+		return [
+			'calendarId' => $this->getCalendarId(),
+			'calendarData' => $this->getCalendarData(),
+			'shares' => $this->getShares(),
+			'objectData' => $this->getObjectData(),
+		];
+	}
+}
diff --git a/lib/public/Calendar/Events/CalendarObjectCreatedEvent.php b/lib/public/Calendar/Events/CalendarObjectCreatedEvent.php
new file mode 100644
index 00000000000..a4d0f40ec55
--- /dev/null
+++ b/lib/public/Calendar/Events/CalendarObjectCreatedEvent.php
@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2025 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+namespace OCP\Calendar\Events;
+
+/**
+ * @since 32.0.0
+ */
+class CalendarObjectCreatedEvent extends AbstractCalendarObjectEvent {
+}
diff --git a/lib/public/Calendar/Events/CalendarObjectDeletedEvent.php b/lib/public/Calendar/Events/CalendarObjectDeletedEvent.php
new file mode 100644
index 00000000000..5466213584e
--- /dev/null
+++ b/lib/public/Calendar/Events/CalendarObjectDeletedEvent.php
@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2025 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+namespace OCP\Calendar\Events;
+
+/**
+ * @since 32.0.0
+ */
+class CalendarObjectDeletedEvent extends AbstractCalendarObjectEvent {
+}
diff --git a/lib/public/Calendar/Events/CalendarObjectMovedEvent.php b/lib/public/Calendar/Events/CalendarObjectMovedEvent.php
new file mode 100644
index 00000000000..1c7df0e1ed5
--- /dev/null
+++ b/lib/public/Calendar/Events/CalendarObjectMovedEvent.php
@@ -0,0 +1,104 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2025 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+namespace OCP\Calendar\Events;
+
+use OCP\EventDispatcher\Event;
+use OCP\EventDispatcher\IWebhookCompatibleEvent;
+
+/**
+ * @since 32.0.0
+ */
+class CalendarObjectMovedEvent extends Event implements IWebhookCompatibleEvent {
+	/**
+	 * @since 32.0.0
+	 */
+	public function __construct(
+		private int $sourceCalendarId,
+		private array $sourceCalendarData,
+		private int $targetCalendarId,
+		private array $targetCalendarData,
+		private array $sourceShares,
+		private array $targetShares,
+		private array $objectData,
+	) {
+		parent::__construct();
+	}
+
+	/**
+	 * @return int
+	 * @since 32.0.0
+	 */
+	public function getSourceCalendarId(): int {
+		return $this->sourceCalendarId;
+	}
+
+	/**
+	 * @return array
+	 * @since 32.0.0
+	 */
+	public function getSourceCalendarData(): array {
+		return $this->sourceCalendarData;
+	}
+
+	/**
+	 * @return int
+	 * @since 32.0.0
+	 */
+	public function getTargetCalendarId(): int {
+		return $this->targetCalendarId;
+	}
+
+	/**
+	 * @return array
+	 * @since 32.0.0
+	 */
+	public function getTargetCalendarData(): array {
+		return $this->targetCalendarData;
+	}
+
+	/**
+	 * @return array
+	 * @since 32.0.0
+	 */
+	public function getSourceShares(): array {
+		return $this->sourceShares;
+	}
+
+	/**
+	 * @return array
+	 * @since 32.0.0
+	 */
+	public function getTargetShares(): array {
+		return $this->targetShares;
+	}
+
+	/**
+	 * @return array
+	 * @since 32.0.0
+	 */
+	public function getObjectData(): array {
+		return $this->objectData;
+	}
+
+	/**
+	 * @return array
+	 * @since 32.0.0
+	 */
+	public function getWebhookSerializable(): array {
+		return [
+			'sourceCalendarId' => $this->getSourceCalendarId(),
+			'sourceCalendarData' => $this->getSourceCalendarData(),
+			'targetCalendarId' => $this->getTargetCalendarId(),
+			'targetCalendarData' => $this->getTargetCalendarData(),
+			'sourceShares' => $this->getSourceShares(),
+			'targetShares' => $this->getTargetShares(),
+			'objectData' => $this->getObjectData(),
+		];
+	}
+}
diff --git a/lib/public/Calendar/Events/CalendarObjectMovedToTrashEvent.php b/lib/public/Calendar/Events/CalendarObjectMovedToTrashEvent.php
new file mode 100644
index 00000000000..ffbd7b0375a
--- /dev/null
+++ b/lib/public/Calendar/Events/CalendarObjectMovedToTrashEvent.php
@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2025 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+namespace OCP\Calendar\Events;
+
+/**
+ * @since 32.0.0
+ */
+class CalendarObjectMovedToTrashEvent extends AbstractCalendarObjectEvent {
+}
diff --git a/lib/public/Calendar/Events/CalendarObjectRestoredEvent.php b/lib/public/Calendar/Events/CalendarObjectRestoredEvent.php
new file mode 100644
index 00000000000..7890e3ca5b3
--- /dev/null
+++ b/lib/public/Calendar/Events/CalendarObjectRestoredEvent.php
@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2025 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+namespace OCP\Calendar\Events;
+
+/**
+ * @since 32.0.0
+ */
+class CalendarObjectRestoredEvent extends AbstractCalendarObjectEvent {
+}
diff --git a/lib/public/Calendar/Events/CalendarObjectUpdatedEvent.php b/lib/public/Calendar/Events/CalendarObjectUpdatedEvent.php
new file mode 100644
index 00000000000..c06b2b8198f
--- /dev/null
+++ b/lib/public/Calendar/Events/CalendarObjectUpdatedEvent.php
@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2025 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+namespace OCP\Calendar\Events;
+
+/**
+ * @since 32.0.0
+ */
+class CalendarObjectUpdatedEvent extends AbstractCalendarObjectEvent {
+}