diff --git a/.forgejo/workflows/phpunit.yml b/.forgejo/workflows/phpunit.yml
index f8e08ac..c79e189 100644
--- a/.forgejo/workflows/phpunit.yml
+++ b/.forgejo/workflows/phpunit.yml
@@ -38,7 +38,7 @@ jobs:
           path: |
             ${{ env.WP_CORE_DIR }}
             ${{ env.WP_TESTS_DIR }}
-          key: cache-wordpress-67-2
+          key: cache-wordpress-67-3
 
       - name: Cache Composer
         id: cache-composer-phpunit
@@ -107,5 +107,10 @@ jobs:
 
       - name: Run Integration tests for Modern Events Calendar Lite
         run: cd /workspace/Event-Federation/wordpress-activitypub-event-bridge/ && ./vendor/bin/phpunit --filter=modern_events_calendar_lite
+        env:
+          PHP_VERSION: ${{ matrix.php-version }}
+
+      - name: Run Integration tests for EventPrime
+        run: cd /workspace/Event-Federation/wordpress-activitypub-event-bridge/ && ./vendor/bin/phpunit --filter=eventprime
         env:
           PHP_VERSION: ${{ matrix.php-version }}
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7a9a38f..ce5ffe0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
+### Added
+
+* Integration for EventPrime – Events Calendar, Bookings and Tickets
+
 ### Fixed
 
 * Fixed that transformer hook function might also return `null`.
diff --git a/README.md b/README.md
index 2e12c7a..7e64f0f 100644
--- a/README.md
+++ b/README.md
@@ -63,6 +63,7 @@ This plugin depends on the [ActivityPub plugin](https://wordpress.org/plugins/ac
 * [Eventin](https://de.wordpress.org/plugins/wp-event-solution/)
 * [Modern Events Calendar Lite](https://webnus.net/modern-events-calendar/)
 * [GatherPress](https://gatherpress.org/)
+* [EventPrime – Events Calendar, Bookings and Tickets](https://wordpress.org/plugins/eventprime-event-calendar-management/)
 
 ## Configuration ##
 
@@ -102,6 +103,10 @@ We're always interested in your feedback. Feel free to reach out to us via [E-Ma
 
 ## Unreleased
 
+### Added
+
+* Integration for EventPrime – Events Calendar, Bookings and Tickets
+
 ### Fixed
 
 * Fixed that transformer hook function might also return `null`.
diff --git a/bin/install-wp-tests.sh b/bin/install-wp-tests.sh
index 3cc440f..7cbf282 100755
--- a/bin/install-wp-tests.sh
+++ b/bin/install-wp-tests.sh
@@ -257,6 +257,7 @@ install_wp_plugins() {
 	install_wp_plugin the-events-calendar "6.8.1"
 	install_wp_plugin very-simple-event-list
 	install_wp_plugin gatherpress
+	install_wp_plugin eventprime-event-calendar-management
 	install_wp_plugin events-manager "6.6.3"
 	install_wp_plugin wp-event-manager "3.1.45.1"
 	install_wp_plugin wp-event-solution "4.0.14"
diff --git a/composer.json b/composer.json
index 4da8b48..d4c2b0b 100644
--- a/composer.json
+++ b/composer.json
@@ -54,11 +54,12 @@
             "@test-events-manager",
             "@test-wp-event-manager",
             "@test-eventin",
-            "@test-modern-events-calendar-lite"
+            "@test-modern-events-calendar-lite",
+            "@test-eventprime"
         ],
         "test-debug": [
             "@prepare-test",
-            "@test-gatherpress"
+            "@test-eventprime"
         ],
         "test-vs-event-list": "phpunit --filter=vs_event_list",
         "test-the-events-calendar": "phpunit --filter=the_events_calendar",
@@ -67,6 +68,7 @@
         "test-wp-event-manager": "phpunit --filter=wp_event_manager",
         "test-eventin": "phpunit --filter=eventin",
         "test-modern-events-calendar-lite": "phpunit --filter=modern_events_calendar_lite",
+        "test-eventprime": "phpunit --filter=eventprime",
         "test-all": "phpunit"
     }
 }
diff --git a/includes/activitypub/transformer/class-eventprime.php b/includes/activitypub/transformer/class-eventprime.php
new file mode 100644
index 0000000..c247ebe
--- /dev/null
+++ b/includes/activitypub/transformer/class-eventprime.php
@@ -0,0 +1,78 @@
+<?php
+/**
+ * ActivityPub Transformer for the plugin EventPrime.
+ *
+ * @package ActivityPub_Event_Bridge
+ * @license AGPL-3.0-or-later
+ */
+
+namespace ActivityPub_Event_Bridge\Activitypub\Transformer;
+
+// Exit if accessed directly.
+defined( 'ABSPATH' ) || exit; // @codeCoverageIgnore
+
+use Activitypub\Activity\Extended_Object\Place;
+use ActivityPub_Event_Bridge\Activitypub\Transformer\Event;
+
+/**
+ * ActivityPub Transformer for VS Event
+ *
+ * @since 1.0.0
+ */
+final class EventPrime extends Event {
+	/**
+	 * Get the end time from the event object.
+	 */
+	protected function get_end_time(): ?string {
+		$timestamp = get_post_meta( $this->wp_object->ID, 'em_end_date', true );
+		if ( $timestamp ) {
+			return \gmdate( 'Y-m-d\TH:i:s\Z', $timestamp );
+		} else {
+			return null;
+		}
+	}
+
+	/**
+	 * Get the end time from the event object.
+	 */
+	protected function get_start_time(): string {
+		$timestamp = get_post_meta( $this->wp_object->ID, 'em_start_date', true );
+		if ( $timestamp ) {
+			return \gmdate( 'Y-m-d\TH:i:s\Z', $timestamp );
+		} else {
+			return '';
+		}
+	}
+
+	/**
+	 * Get location from the event object.
+	 */
+	protected function get_location(): ?Place {
+		$venue_term_id = get_post_meta( $this->wp_object->ID, 'em_venue', true );
+		if ( ! $venue_term_id ) {
+			return null;
+		}
+
+		$venue = wp_get_post_terms( $this->wp_object->ID, 'em_venue' );
+
+		if ( empty( $venue ) ) {
+			return null;
+		} else {
+			$venue = $venue[0];
+		}
+
+		$place = new Place();
+
+		$place->set_name( $venue->name );
+		$place->set_content( $venue->description );
+
+		$address         = get_term_meta( $venue->term_id, 'em_address', true );
+		$display_address = get_term_meta( $venue->term_id, 'em_display_address_on_frontend', true );
+
+		if ( $address && $display_address ) {
+			$place->set_address( get_term_meta( $venue->term_id, 'em_address', true ) );
+		}
+
+		return $place;
+	}
+}
diff --git a/includes/activitypub/transformer/class-gatherpress.php b/includes/activitypub/transformer/class-gatherpress.php
index 756524a..ea742b3 100644
--- a/includes/activitypub/transformer/class-gatherpress.php
+++ b/includes/activitypub/transformer/class-gatherpress.php
@@ -1,6 +1,6 @@
 <?php
 /**
- * ActivityPub Transformer for the plugin Very Simple Event List.
+ * ActivityPub Transformer for the GatherPress event plugin.
  *
  * @package ActivityPub_Event_Bridge
  * @license AGPL-3.0-or-later
diff --git a/includes/class-setup.php b/includes/class-setup.php
index 7d1ddb5..3b5ef0b 100644
--- a/includes/class-setup.php
+++ b/includes/class-setup.php
@@ -132,6 +132,7 @@ class Setup {
 		'\ActivityPub_Event_Bridge\Plugins\WP_Event_Manager',
 		'\ActivityPub_Event_Bridge\Plugins\Eventin',
 		'\ActivityPub_Event_Bridge\Plugins\Modern_Events_Calendar_Lite',
+		'\ActivityPub_Event_Bridge\Plugins\EventPrime',
 	);
 
 	/**
diff --git a/includes/plugins/class-eventprime.php b/includes/plugins/class-eventprime.php
new file mode 100644
index 0000000..e5fb8d6
--- /dev/null
+++ b/includes/plugins/class-eventprime.php
@@ -0,0 +1,218 @@
+<?php
+/**
+ * EventPrime – Events Calendar, Bookings and Tickets
+ *
+ * @link    https://wordpress.org/plugins/eventprime-event-calendar-management/
+ * @package ActivityPub_Event_Bridge
+ * @since   1.0.0
+ */
+
+namespace ActivityPub_Event_Bridge\Plugins;
+
+use Activitypub\Signature;
+use Eventprime_Basic_Functions;
+
+// Exit if accessed directly.
+defined( 'ABSPATH' ) || exit; // @codeCoverageIgnore
+
+/**
+ * This class defines which information is necessary for the EventPrime event plugin.
+ *
+ * @since 1.0.0
+ */
+final class EventPrime extends Event_Plugin {
+	/**
+	 * Add filter for the template inclusion.
+	 */
+	public function __construct() {
+		\add_filter( 'template_include', array( self::class, 'render_activitypub_template' ), 100 );
+	}
+
+	/**
+	 * Returns the full plugin file.
+	 *
+	 * @return string
+	 */
+	public static function get_plugin_file(): string {
+		return 'eventprime-event-calendar-management/event-prime.php';
+	}
+
+	/**
+	 * Returns the event post type of the plugin.
+	 *
+	 * @return string
+	 */
+	public static function get_post_type(): string {
+		return 'em_event';
+	}
+
+	/**
+	 * Returns the IDs of the admin pages of the plugin.
+	 *
+	 * @return array The settings page urls.
+	 */
+	public static function get_settings_pages(): array {
+		return array( 'ep-settings' );
+	}
+
+	/**
+	 * Returns the ActivityPub transformer class.
+	 *
+	 * @return string
+	 */
+	public static function get_activitypub_transformer_class_name(): string {
+		return 'EventPrime';
+	}
+
+	/**
+	 * Returns the taxonomy used for the plugin's event categories.
+	 *
+	 * @return string
+	 */
+	public static function get_event_category_taxonomy(): string {
+		return 'em_event_type';
+	}
+
+	/**
+	 * Determine whether the current request is an EventPrime ActivityPub request.
+	 */
+	private static function is_eventprime_activitypub_request() {
+		global $wp_query;
+
+		/*
+		 * ActivityPub requests are currently only made for
+		 * author archives, singular posts, and the homepage.
+		 */
+		if ( ! \is_author() && ! \is_singular() && ! \is_home() && ! defined( '\REST_REQUEST' ) ) {
+			return false;
+		}
+
+		// Check if the current post type supports ActivityPub.
+		if ( \is_singular() ) {
+			$queried_object = \get_queried_object();
+
+			if ( ! $queried_object instanceof \WP_Post ) {
+				return false;
+			}
+
+			if ( '[em_event]' !== $queried_object->post_content && '[em_events]' !== $queried_object->post_content ) {
+				return false;
+			}
+		}
+
+		// Check if header already sent.
+		if ( ! \headers_sent() && ACTIVITYPUB_SEND_VARY_HEADER ) {
+			// Send Vary header for Accept header.
+			\header( 'Vary: Accept' );
+		}
+
+		// One can trigger an ActivityPub request by adding ?activitypub to the URL.
+		if ( isset( $wp_query->query_vars['activitypub'] ) ) {
+			return true;
+		}
+
+		/*
+		 * The other (more common) option to make an ActivityPub request
+		 * is to send an Accept header.
+		 */
+		if ( isset( $_SERVER['HTTP_ACCEPT'] ) ) {
+			$accept = sanitize_text_field( wp_unslash( $_SERVER['HTTP_ACCEPT'] ) );
+
+			/*
+			 * $accept can be a single value, or a comma separated list of values.
+			 * We want to support both scenarios,
+			 * and return true when the header includes at least one of the following:
+			 * - application/activity+json
+			 * - application/ld+json
+			 * - application/json
+			 */
+			if ( preg_match( '/(application\/(ld\+json|activity\+json|json))/i', $accept ) ) {
+				return true;
+			}
+		}
+
+		return false;
+	}
+
+	/**
+	 * Extract the post id of the event for an EventPrime event query.
+	 *
+	 * @return bool|int The post ID if an event could be identified, false otherwise.
+	 */
+	private static function get_eventprime_post_id() {
+		$event = get_query_var( 'event' );
+		if ( ! $event ) {
+			if ( ! empty( filter_input( INPUT_GET, 'event', FILTER_SANITIZE_FULL_SPECIAL_CHARS ) ) ) {
+				$event = rtrim( filter_input( INPUT_GET, 'event', FILTER_SANITIZE_FULL_SPECIAL_CHARS ), '/\\' );
+			}
+		}
+
+		if ( $event ) {
+			$ep_basic_functions = new Eventprime_Basic_Functions();
+			return $ep_basic_functions->ep_get_id_by_slug( $event, 'em_event' );
+		}
+
+		return false;
+	}
+
+	/**
+	 * Add the ActivityPub template for EventPrime.
+	 *
+	 * @param  string $template The path to the template object.
+	 * @return string The new path to the JSON template.
+	 */
+	public static function render_activitypub_template( $template ) {
+		if ( defined( 'REST_REQUEST' ) && REST_REQUEST ) {
+			return $template;
+		}
+
+		// Check if the request is a page with (solely) the eventprime shortcode in it.
+		if ( ! self::is_eventprime_activitypub_request() ) {
+			return $template;
+		}
+
+		if ( ! \is_singular() ) {
+			return $template;
+		}
+
+		$post_id = self::get_eventprime_post_id();
+
+		if ( $post_id ) {
+			$preview = \get_query_var( 'preview' );
+			if ( $preview ) {
+				$activitypub_template = ACTIVITYPUB_PLUGIN_DIR . '/templates/post-preview.php';
+			} else {
+				$activitypub_template = ACTIVITYPUB_PLUGIN_DIR . '/templates/post-json.php';
+			}
+		}
+
+		/*
+		 * Check if the request is authorized.
+		 *
+		 * @see https://www.w3.org/wiki/SocialCG/ActivityPub/Primer/Authentication_Authorization#Authorized_fetch
+		 * @see https://swicg.github.io/activitypub-http-signature/#authorized-fetch
+		 */
+		if ( $activitypub_template && ACTIVITYPUB_AUTHORIZED_FETCH ) {
+			$verification = Signature::verify_http_signature( $_SERVER );
+			if ( \is_wp_error( $verification ) ) {
+				header( 'HTTP/1.1 401 Unauthorized' );
+
+				// Fallback as template_loader can't return http headers.
+				return $template;
+			}
+		}
+
+		if ( $activitypub_template ) {
+			global $post;
+
+			$post = get_post( $post_id ); // phpcs:ignore WordPress.WP.GlobalVariablesOverride.Prohibited
+
+			// Ensure WordPress functions use the new post data.
+			setup_postdata( $post );
+			// Return the default ActivityPub template.
+			return $activitypub_template;
+		}
+
+		return $template;
+	}
+}
diff --git a/readme.txt b/readme.txt
index 66ef1b9..f200dd6 100644
--- a/readme.txt
+++ b/readme.txt
@@ -57,6 +57,7 @@ This plugin depends on the [ActivityPub plugin](https://wordpress.org/plugins/ac
 * [Eventin](https://de.wordpress.org/plugins/wp-event-solution/)
 * [Modern Events Calendar Lite](https://webnus.net/modern-events-calendar/)
 * [GatherPress](https://gatherpress.org/)
+* [EventPrime – Events Calendar, Bookings and Tickets](https://wordpress.org/plugins/eventprime-event-calendar-management/)
 
 == Configuration ==
 
diff --git a/tests/bootstrap.php b/tests/bootstrap.php
index 4262f2b..fef1717 100755
--- a/tests/bootstrap.php
+++ b/tests/bootstrap.php
@@ -71,6 +71,9 @@ function _manually_load_plugin() {
 		case 'wp_event_manager':
 			$plugin_file = 'wp-event-manager/wp-event-manager.php';
 			break;
+		case 'eventprime':
+			$plugin_file = 'eventprime-event-calendar-management/event-prime.php';
+			break;
 	}
 
 	if ( $plugin_file ) {
diff --git a/tests/test-class-plugin-eventprime.php b/tests/test-class-plugin-eventprime.php
new file mode 100644
index 0000000..354f6df
--- /dev/null
+++ b/tests/test-class-plugin-eventprime.php
@@ -0,0 +1,186 @@
+<?php
+/**
+ * Class SampleTest
+ *
+ * @package ActivityPub_Event_Bridge
+ */
+
+/**
+ * Sample test case.
+ */
+class Test_EventPrime extends WP_UnitTestCase {
+	/**
+	 * Mockup venues of certain complexity.
+	 *
+	 * @var array
+	 */
+	private $mockup_venue = array();
+
+	/**
+	 * Mockup events for tests.
+	 *
+	 * @var array
+	 */
+	protected $mockup_events = array();
+
+	/**
+	 * Override the setup function, so that tests don't run if the Events Calendar is not active.
+	 */
+	public function set_up() {
+		parent::set_up();
+
+		if ( ! class_exists( '\Eventprime_Basic_Functions' ) ) {
+			self::markTestSkipped( 'The EventPrime Calendar management plugin is not active.' );
+		}
+
+		// Make sure that ActivityPub support is enabled for The Events Calendar.
+		$aeb = \ActivityPub_Event_Bridge\Setup::get_instance();
+		$aeb->activate_activitypub_support_for_active_event_plugins();
+
+		// Delete all posts afterwards.
+		_delete_all_posts();
+
+		$this->setup_mockup_data();
+	}
+
+	/**
+	 * Setup mockup events.
+	 */
+	private function setup_mockup_data() {
+		$this->mockup_events = array(
+			'minimal_event' => array(
+				'name'              => 'EventPrime Event title',
+				'description'       => 'EventPrime event description',
+				'status'            => 'Publish',
+				'em_event_type'     => '',
+				'em_venue'          => '',
+				'em_organizer'      => '',
+				'em_performer'      => '',
+				'em_start_date'     => strtotime( '+10 days 15:00:00' ),
+				'em_end_date'       => strtotime( '+10 days 16:00:00' ),
+				'em_enable_booking' => 'bookings_off',
+				'em_ticket_price'   => 0,
+			),
+		);
+
+		$this->mockup_venue = array(
+			'name'    => 'Test Venue',
+			'address' => 'Fediverse-street 1337, 1234 Fediverse-town',
+		);
+	}
+
+	/**
+	 * Test that the right transformer gets applied.
+	 */
+	public function test_the_events_calendar_transformer_class() {
+		// We only test for one event plugin being active at the same time,
+		// even though we support multiple onces in theory.
+		// But testing all combinations is beyond scope.
+		$active_event_plugins = \ActivityPub_Event_Bridge\Setup::get_instance()->get_active_event_plugins();
+		$this->assertEquals( 1, count( $active_event_plugins ) );
+
+		// Enable ActivityPub support for the event plugin.
+		$this->assertContains( 'em_event', get_option( 'activitypub_support_post_types' ) );
+
+		// Create an EventPrime Event without content.
+		$ep_functions = new Eventprime_Basic_Functions();
+
+		$post_id = $ep_functions->insert_event_post_data( $this->mockup_events['minimal_event'] );
+
+		$wp_object = get_post( $post_id );
+
+		// Call the transformer Factory.
+		$transformer = \Activitypub\Transformer\Factory::get_transformer( $wp_object );
+
+		// Check that we got the right transformer.
+		$this->assertInstanceOf( \ActivityPub_Event_Bridge\Activitypub\Transformer\EventPrime::class, $transformer );
+	}
+
+	/**
+	 * Test transformation of minimal event.
+	 */
+	public function test_transformation_of_minimal_event() {
+		// Create an EventPrime Event without content.
+		$ep_functions = new Eventprime_Basic_Functions();
+
+		$post_id = $ep_functions->insert_event_post_data( $this->mockup_events['minimal_event'] );
+
+		$wp_object = get_post( $post_id );
+
+		// Call the transformer Factory.
+		$event_array = \Activitypub\Transformer\Factory::get_transformer( $wp_object )->to_object()->to_array();
+
+		// Check that the event ActivityStreams representation contains everything as expected.
+		$this->assertEquals( 'Event', $event_array['type'] );
+		$this->assertEquals( 'EventPrime Event title', $event_array['name'] );
+		$this->assertEquals( 'EventPrime event description', wp_strip_all_tags( $event_array['content'] ) );
+		$this->assertEquals( gmdate( 'Y-m-d', strtotime( '+10 days 15:00:00' ) ) . 'T15:00:00Z', $event_array['startTime'] );
+		$this->assertEquals( gmdate( 'Y-m-d', strtotime( '+10 days 16:00:00' ) ) . 'T16:00:00Z', $event_array['endTime'] );
+		$this->assertTrue( $event_array['commentsEnabled'] );
+		$this->assertEquals( 'allow_all', $event_array['repliesModerationOption'] );
+		$this->assertEquals( 'external', $event_array['joinMode'] );
+		$this->assertArrayNotHasKey( 'location', $event_array );
+		$this->assertEquals( 'MEETING', $event_array['category'] );
+	}
+
+	/**
+	 * Test transformation of minimal event.
+	 */
+	public function test_transformation_of_minimal_event_with_venue() {
+		// Create an EventPrime Event without content.
+		$ep_functions = new Eventprime_Basic_Functions();
+
+		$venue_term_id = wp_insert_term( $this->mockup_venue['name'], 'em_venue' )['term_id'];
+		add_term_meta( $venue_term_id, 'em_address', $this->mockup_venue['address'], true );
+		add_term_meta( $venue_term_id, 'em_display_address_on_frontend', true, true );
+
+		$event_data             = $this->mockup_events['minimal_event'];
+		$event_data['em_venue'] = $venue_term_id;
+
+		$post_id = $ep_functions->insert_event_post_data( $event_data );
+
+		$wp_object = get_post( $post_id );
+
+		// Call the transformer Factory.
+		$event_array = \Activitypub\Transformer\Factory::get_transformer( $wp_object )->to_object()->to_array();
+
+		// Check that the event ActivityStreams representation contains everything as expected.
+		$this->assertEquals( 'Event', $event_array['type'] );
+		$this->assertEquals( 'EventPrime Event title', $event_array['name'] );
+		$this->assertEquals( 'EventPrime event description', wp_strip_all_tags( $event_array['content'] ) );
+		$this->assertEquals( gmdate( 'Y-m-d', strtotime( '+10 days 15:00:00' ) ) . 'T15:00:00Z', $event_array['startTime'] );
+		$this->assertEquals( gmdate( 'Y-m-d', strtotime( '+10 days 16:00:00' ) ) . 'T16:00:00Z', $event_array['endTime'] );
+		$this->assertTrue( $event_array['commentsEnabled'] );
+		$this->assertEquals( 'allow_all', $event_array['repliesModerationOption'] );
+		$this->assertEquals( 'external', $event_array['joinMode'] );
+		$this->assertEquals( $this->mockup_venue['name'], $event_array['location']['name'] );
+		$this->assertEquals( $this->mockup_venue['address'], $event_array['location']['address'] );
+
+		$this->assertEquals( 'MEETING', $event_array['category'] );
+	}
+
+	/**
+	 * Test transformation of minimal event with venue which has a hidden address.
+	 */
+	public function test_transformation_of_minimal_event_with_venue_with_hidden_address() {
+		// Create an EventPrime Event without content.
+		$ep_functions = new Eventprime_Basic_Functions();
+
+		$venue_term_id = wp_insert_term( $this->mockup_venue['name'], 'em_venue' )['term_id'];
+		add_term_meta( $venue_term_id, 'em_address', $this->mockup_venue['address'], true );
+		add_term_meta( $venue_term_id, 'em_display_address_on_frontend', false, true );
+
+		$event_data             = $this->mockup_events['minimal_event'];
+		$event_data['em_venue'] = $venue_term_id;
+
+		$post_id = $ep_functions->insert_event_post_data( $event_data );
+
+		$wp_object = get_post( $post_id );
+
+		// Call the transformer Factory.
+		$event_array = \Activitypub\Transformer\Factory::get_transformer( $wp_object )->to_object()->to_array();
+
+		// Check that the event ActivityStreams representation contains everything as expected.
+		$this->assertArrayNotHasKey( 'address', $event_array['location'] );
+	}
+}