diff --git a/stream-chat-android-client/src/main/java/io/getstream/chat/android/client/parser2/DirectEventParser.kt b/stream-chat-android-client/src/main/java/io/getstream/chat/android/client/parser2/DirectEventParser.kt
index 7da3cb8b43f..a19014638d8 100644
--- a/stream-chat-android-client/src/main/java/io/getstream/chat/android/client/parser2/DirectEventParser.kt
+++ b/stream-chat-android-client/src/main/java/io/getstream/chat/android/client/parser2/DirectEventParser.kt
@@ -36,6 +36,8 @@ import io.getstream.chat.android.client.parser2.direct.PrivacySettingsAdapter
 import io.getstream.chat.android.client.parser2.direct.ReactionAdapter
 import io.getstream.chat.android.client.parser2.direct.ReactionGroupAdapter
 import io.getstream.chat.android.client.parser2.direct.UserAdapter
+import io.getstream.chat.android.client.parser2.direct.UserGroupAdapter
+import io.getstream.chat.android.client.parser2.direct.UserGroupMemberAdapter
 import io.getstream.chat.android.models.EventType
 import io.getstream.chat.android.models.MessageTransformer
 import io.getstream.chat.android.models.UserId
@@ -76,6 +78,8 @@ internal class DirectEventParser(
     private val userAdapter by lazy {
         UserAdapter(deviceAdapter, privacySettingsAdapter, dateAdapter, userTransformer)
     }
+    private val userGroupMemberAdapter by lazy { UserGroupMemberAdapter(dateAdapter) }
+    private val userGroupAdapter by lazy { UserGroupAdapter(userGroupMemberAdapter, dateAdapter) }
     private val reactionAdapter by lazy { ReactionAdapter(userAdapter, dateAdapter) }
     private val pollAdapter by lazy {
         PollAdapter(userAdapter, optionAdapter, dateAdapter, currentUserIdProvider)
@@ -84,7 +88,7 @@ internal class DirectEventParser(
     private val messageAdapter by lazy {
         MessageAdapter(
             attachmentAdapter, channelInfoAdapter, reactionAdapter,
-            reactionGroupAdapter, userAdapter, moderationDetailsAdapter, moderationAdapter,
+            reactionGroupAdapter, userAdapter, userGroupAdapter, moderationDetailsAdapter, moderationAdapter,
             pollAdapter, reminderAdapter, locationAdapter, dateAdapter, messageTransformer,
         )
     }
diff --git a/stream-chat-android-client/src/main/java/io/getstream/chat/android/client/parser2/direct/MessageAdapter.kt b/stream-chat-android-client/src/main/java/io/getstream/chat/android/client/parser2/direct/MessageAdapter.kt
index 5de7137a1ae..dc75f7ce512 100644
--- a/stream-chat-android-client/src/main/java/io/getstream/chat/android/client/parser2/direct/MessageAdapter.kt
+++ b/stream-chat-android-client/src/main/java/io/getstream/chat/android/client/parser2/direct/MessageAdapter.kt
@@ -31,6 +31,7 @@ import io.getstream.chat.android.models.Poll
 import io.getstream.chat.android.models.Reaction
 import io.getstream.chat.android.models.ReactionGroup
 import io.getstream.chat.android.models.User
+import io.getstream.chat.android.models.UserGroup
 import java.util.Date
 
 @Suppress("LongParameterList")
@@ -40,6 +41,7 @@ internal class MessageAdapter(
     private val reactionAdapter: JsonAdapter<Reaction>,
     private val reactionGroupAdapter: ReactionGroupAdapter,
     private val userAdapter: JsonAdapter<User>,
+    private val userGroupAdapter: JsonAdapter<UserGroup>,
     private val moderationDetailsAdapter: JsonAdapter<MessageModerationDetails>,
     private val moderationAdapter: JsonAdapter<Moderation>,
     private val pollAdapter: JsonAdapter<Poll>,
@@ -70,6 +72,10 @@ internal class MessageAdapter(
         var id: String? = null
         var latestReactions: List<Reaction>? = null
         var mentionedUsers: List<User>? = null
+        var mentionedHere: Boolean? = null
+        var mentionedChannel: Boolean? = null
+        var mentionedGroups: List<UserGroup>? = null
+        var mentionedRoles: List<String>? = null
         var ownReactions: List<Reaction>? = null
         var parentId: String? = null
         var pinExpires: Date? = null
@@ -120,6 +126,16 @@ internal class MessageAdapter(
                 "id" -> id = reader.nextString()
                 "latest_reactions" -> latestReactions = JsonParsingUtils.parseList(reader, reactionAdapter)
                 "mentioned_users" -> mentionedUsers = JsonParsingUtils.parseList(reader, userAdapter)
+                "mentioned_here" -> mentionedHere = JsonParsingUtils.readNullableBoolean(reader)
+                "mentioned_channel" -> mentionedChannel = JsonParsingUtils.readNullableBoolean(reader)
+                "mentioned_groups" -> {
+                    JsonParsingUtils.rejectExplicitNull(reader, "mentioned_groups")
+                    mentionedGroups = JsonParsingUtils.parseList(reader, userGroupAdapter)
+                }
+                "mentioned_roles" -> {
+                    JsonParsingUtils.rejectExplicitNull(reader, "mentioned_roles")
+                    mentionedRoles = JsonParsingUtils.parseStringList(reader)
+                }
                 "own_reactions" -> ownReactions = JsonParsingUtils.parseList(reader, reactionAdapter)
                 "parent_id" -> parentId = JsonParsingUtils.readNullableString(reader)
                 "pin_expires" -> pinExpires = dateAdapter.fromJson(reader)
@@ -222,6 +238,10 @@ internal class MessageAdapter(
             id = id,
             latestReactions = filteredLatestReactions,
             mentionedUsers = mentionedUsers,
+            mentionedHere = mentionedHere == true,
+            mentionedChannel = mentionedChannel == true,
+            mentionedGroups = mentionedGroups.orEmpty(),
+            mentionedRoles = mentionedRoles.orEmpty(),
             ownReactions = filteredOwnReactions,
             parentId = parentId,
             pinExpires = pinExpires,
diff --git a/stream-chat-android-client/src/main/java/io/getstream/chat/android/client/parser2/direct/UserGroupAdapter.kt b/stream-chat-android-client/src/main/java/io/getstream/chat/android/client/parser2/direct/UserGroupAdapter.kt
new file mode 100644
index 00000000000..f556fbd507c
--- /dev/null
+++ b/stream-chat-android-client/src/main/java/io/getstream/chat/android/client/parser2/direct/UserGroupAdapter.kt
@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 2014-2026 Stream.io Inc. All rights reserved.
+ *
+ * Licensed under the Stream License;
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    https://github.com/GetStream/stream-chat-android/blob/main/LICENSE
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.getstream.chat.android.client.parser2.direct
+
+import com.squareup.moshi.JsonAdapter
+import com.squareup.moshi.JsonReader
+import com.squareup.moshi.JsonWriter
+import io.getstream.chat.android.models.UserGroup
+import io.getstream.chat.android.models.UserGroupMember
+import java.util.Date
+
+internal class UserGroupAdapter(
+    private val memberAdapter: JsonAdapter<UserGroupMember>,
+    private val dateAdapter: JsonAdapter<Date>,
+) : JsonAdapter<UserGroup>() {
+
+    override fun fromJson(reader: JsonReader): UserGroup? {
+        if (reader.peek() == JsonReader.Token.NULL) return reader.nextNull()
+
+        reader.beginObject()
+
+        var id: String? = null
+        var name: String? = null
+        var description: String? = null
+        var teamId: String? = null
+        var members: List<UserGroupMember>? = null
+        var createdBy: String? = null
+        var createdAt: Date? = null
+        var updatedAt: Date? = null
+
+        while (reader.hasNext()) {
+            when (reader.nextName()) {
+                "id" -> id = reader.nextString()
+                "name" -> name = reader.nextString()
+                "description" -> description = JsonParsingUtils.readNullableString(reader)
+                "team_id" -> teamId = JsonParsingUtils.readNullableString(reader)
+                "members" -> members = JsonParsingUtils.parseList(reader, memberAdapter)
+                "created_by" -> createdBy = JsonParsingUtils.readNullableString(reader)
+                "created_at" -> createdAt = dateAdapter.fromJson(reader)
+                "updated_at" -> updatedAt = dateAdapter.fromJson(reader)
+                else -> reader.skipValue()
+            }
+        }
+        reader.endObject()
+
+        JsonParsingUtils.requireField(id, "id", reader)
+        JsonParsingUtils.requireField(name, "name", reader)
+
+        return UserGroup(
+            id = id,
+            name = name,
+            description = description,
+            team = teamId.orEmpty(),
+            members = members ?: emptyList(),
+            createdBy = createdBy,
+            createdAt = createdAt,
+            updatedAt = updatedAt,
+        )
+    }
+
+    override fun toJson(p0: JsonWriter, p1: UserGroup?) {
+        error("Serialization not supported for direct-to-domain path")
+    }
+}
diff --git a/stream-chat-android-client/src/main/java/io/getstream/chat/android/client/parser2/direct/UserGroupMemberAdapter.kt b/stream-chat-android-client/src/main/java/io/getstream/chat/android/client/parser2/direct/UserGroupMemberAdapter.kt
new file mode 100644
index 00000000000..d9738921128
--- /dev/null
+++ b/stream-chat-android-client/src/main/java/io/getstream/chat/android/client/parser2/direct/UserGroupMemberAdapter.kt
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2014-2026 Stream.io Inc. All rights reserved.
+ *
+ * Licensed under the Stream License;
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    https://github.com/GetStream/stream-chat-android/blob/main/LICENSE
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.getstream.chat.android.client.parser2.direct
+
+import com.squareup.moshi.JsonAdapter
+import com.squareup.moshi.JsonReader
+import com.squareup.moshi.JsonWriter
+import io.getstream.chat.android.models.UserGroupMember
+import java.util.Date
+
+internal class UserGroupMemberAdapter(
+    private val dateAdapter: JsonAdapter<Date>,
+) : JsonAdapter<UserGroupMember>() {
+
+    override fun fromJson(reader: JsonReader): UserGroupMember? {
+        if (reader.peek() == JsonReader.Token.NULL) return reader.nextNull()
+
+        reader.beginObject()
+
+        var groupId: String? = null
+        var userId: String? = null
+        var isAdmin: Boolean? = null
+        var createdAt: Date? = null
+
+        while (reader.hasNext()) {
+            when (reader.nextName()) {
+                "group_id" -> groupId = reader.nextString()
+                "user_id" -> userId = reader.nextString()
+                "is_admin" -> isAdmin = reader.nextBoolean()
+                "created_at" -> createdAt = dateAdapter.fromJson(reader)
+                else -> reader.skipValue()
+            }
+        }
+        reader.endObject()
+
+        JsonParsingUtils.requireField(groupId, "group_id", reader)
+        JsonParsingUtils.requireField(userId, "user_id", reader)
+
+        return UserGroupMember(
+            groupId = groupId,
+            userId = userId,
+            isAdmin = isAdmin ?: false,
+            createdAt = createdAt,
+        )
+    }
+
+    override fun toJson(p0: JsonWriter, p1: UserGroupMember?) {
+        error("Serialization not supported for direct-to-domain path")
+    }
+}
diff --git a/stream-chat-android-client/src/test/java/io/getstream/chat/android/client/parser2/MessageParsingTest.kt b/stream-chat-android-client/src/test/java/io/getstream/chat/android/client/parser2/MessageParsingTest.kt
index ee81bc8a796..66aaaf0645f 100644
--- a/stream-chat-android-client/src/test/java/io/getstream/chat/android/client/parser2/MessageParsingTest.kt
+++ b/stream-chat-android-client/src/test/java/io/getstream/chat/android/client/parser2/MessageParsingTest.kt
@@ -35,6 +35,8 @@ import io.getstream.chat.android.client.parser2.direct.PrivacySettingsAdapter
 import io.getstream.chat.android.client.parser2.direct.ReactionAdapter
 import io.getstream.chat.android.client.parser2.direct.ReactionGroupAdapter
 import io.getstream.chat.android.client.parser2.direct.UserAdapter
+import io.getstream.chat.android.client.parser2.direct.UserGroupAdapter
+import io.getstream.chat.android.client.parser2.direct.UserGroupMemberAdapter
 import io.getstream.chat.android.client.parser2.testdata.MessageTestData
 import io.getstream.chat.android.models.Message
 import io.getstream.chat.android.models.MessageTransformer
@@ -77,6 +79,13 @@ internal class MessageParsingTest {
     private val reactionGroupAdapter = ReactionGroupAdapter(
         dateAdapter = dateAdapter,
     )
+    private val userGroupMemberAdapter = UserGroupMemberAdapter(
+        dateAdapter = dateAdapter,
+    )
+    private val userGroupAdapter = UserGroupAdapter(
+        memberAdapter = userGroupMemberAdapter,
+        dateAdapter = dateAdapter,
+    )
     private val attachmentAdapter = AttachmentAdapter()
     private val channelInfoAdapter = ChannelInfoAdapter()
     private val moderationDetailsAdapter = MessageModerationDetailsAdapter()
@@ -101,6 +110,7 @@ internal class MessageParsingTest {
         reactionAdapter = reactionAdapter,
         reactionGroupAdapter = reactionGroupAdapter,
         userAdapter = userAdapter,
+        userGroupAdapter = userGroupAdapter,
         moderationDetailsAdapter = moderationDetailsAdapter,
         moderationAdapter = moderationAdapter,
         pollAdapter = pollAdapter,
@@ -268,6 +278,14 @@ internal class MessageParsingTest {
     fun `Both paths - throw on explicit null thread_participants`() =
         assertBothPathsThrow(MessageTestData.jsonExplicitNullThreadParticipants)
 
+    @Test
+    fun `Both paths - throw on explicit null mentioned_groups`() =
+        assertBothPathsThrow(MessageTestData.jsonExplicitNullMentionedGroups)
+
+    @Test
+    fun `Both paths - throw on explicit null mentioned_roles`() =
+        assertBothPathsThrow(MessageTestData.jsonExplicitNullMentionedRoles)
+
     private fun assertBothPathsThrow(json: String) {
         assertThrows<JsonDataException> {
             parser.fromJson(json, DownstreamMessageDto::class.java)
@@ -296,6 +314,7 @@ internal class MessageParsingTest {
             reactionAdapter = reactionAdapter,
             reactionGroupAdapter = reactionGroupAdapter,
             userAdapter = userAdapter,
+            userGroupAdapter = userGroupAdapter,
             moderationDetailsAdapter = moderationDetailsAdapter,
             moderationAdapter = moderationAdapter,
             pollAdapter = pollAdapter,
@@ -344,6 +363,7 @@ internal class MessageParsingTest {
             reactionAdapter = transformedReactionAdapter,
             reactionGroupAdapter = reactionGroupAdapter,
             userAdapter = transformedUserAdapter,
+            userGroupAdapter = userGroupAdapter,
             moderationDetailsAdapter = moderationDetailsAdapter,
             moderationAdapter = moderationAdapter,
             pollAdapter = transformedPollAdapter,
diff --git a/stream-chat-android-client/src/test/java/io/getstream/chat/android/client/parser2/NewMessageEventParsingTest.kt b/stream-chat-android-client/src/test/java/io/getstream/chat/android/client/parser2/NewMessageEventParsingTest.kt
index 0fc1f177c41..0c6eea523ec 100644
--- a/stream-chat-android-client/src/test/java/io/getstream/chat/android/client/parser2/NewMessageEventParsingTest.kt
+++ b/stream-chat-android-client/src/test/java/io/getstream/chat/android/client/parser2/NewMessageEventParsingTest.kt
@@ -37,6 +37,8 @@ import io.getstream.chat.android.client.parser2.direct.PrivacySettingsAdapter
 import io.getstream.chat.android.client.parser2.direct.ReactionAdapter
 import io.getstream.chat.android.client.parser2.direct.ReactionGroupAdapter
 import io.getstream.chat.android.client.parser2.direct.UserAdapter
+import io.getstream.chat.android.client.parser2.direct.UserGroupAdapter
+import io.getstream.chat.android.client.parser2.direct.UserGroupMemberAdapter
 import io.getstream.chat.android.client.parser2.testdata.NewMessageEventTestData
 import io.getstream.chat.android.models.NoOpChannelTransformer
 import io.getstream.chat.android.models.NoOpMessageTransformer
@@ -77,6 +79,13 @@ internal class NewMessageEventParsingTest {
     private val reactionGroupAdapter = ReactionGroupAdapter(
         dateAdapter = dateAdapter,
     )
+    private val userGroupMemberAdapter = UserGroupMemberAdapter(
+        dateAdapter = dateAdapter,
+    )
+    private val userGroupAdapter = UserGroupAdapter(
+        memberAdapter = userGroupMemberAdapter,
+        dateAdapter = dateAdapter,
+    )
     private val attachmentAdapter = AttachmentAdapter()
     private val channelInfoAdapter = ChannelInfoAdapter()
     private val moderationDetailsAdapter = MessageModerationDetailsAdapter()
@@ -100,6 +109,7 @@ internal class NewMessageEventParsingTest {
         reactionAdapter = reactionAdapter,
         reactionGroupAdapter = reactionGroupAdapter,
         userAdapter = userAdapter,
+        userGroupAdapter = userGroupAdapter,
         moderationDetailsAdapter = moderationDetailsAdapter,
         moderationAdapter = moderationAdapter,
         pollAdapter = pollAdapter,
diff --git a/stream-chat-android-client/src/test/java/io/getstream/chat/android/client/parser2/testdata/MessageTestData.kt b/stream-chat-android-client/src/test/java/io/getstream/chat/android/client/parser2/testdata/MessageTestData.kt
index 0d6075d7151..265e7170722 100644
--- a/stream-chat-android-client/src/test/java/io/getstream/chat/android/client/parser2/testdata/MessageTestData.kt
+++ b/stream-chat-android-client/src/test/java/io/getstream/chat/android/client/parser2/testdata/MessageTestData.kt
@@ -79,6 +79,28 @@ internal object MessageTestData {
         "mentioned_users": [
             {"id": "user-2", "role": "user", "banned": false, "online": true}
         ],
+        "mentioned_here": true,
+        "mentioned_channel": true,
+        "mentioned_groups": [
+            {
+                "id": "group-1",
+                "name": "engineering",
+                "description": "Engineering team",
+                "team_id": "team-1",
+                "members": [
+                    {
+                        "group_id": "group-1",
+                        "user_id": "user-1",
+                        "is_admin": true,
+                        "created_at": "2020-01-01T00:00:00.000Z"
+                    }
+                ],
+                "created_by": "user-1",
+                "created_at": "2020-01-01T00:00:00.000Z",
+                "updated_at": "2020-01-01T00:00:00.000Z"
+            }
+        ],
+        "mentioned_roles": ["admin", "moderator"],
         "thread_participants": [
             {"id": "user-3", "role": "user", "banned": false, "online": true}
         ],
@@ -561,7 +583,11 @@ internal object MessageTestData {
         "command": null,
         "parent_id": null,
         "quoted_message_id": null,
-        "deleted_for_me": null
+        "deleted_for_me": null,
+        "mentioned_here": true,
+        "mentioned_channel": true,
+        "mentioned_groups": [],
+        "mentioned_roles": ["admin", "moderator"]
     }"""
 
     val expectedWithExplicitNulls = Message(
@@ -588,6 +614,10 @@ internal object MessageTestData {
         deletedForMe = false,
         shadowed = false,
         showInChannel = false,
+        mentionedHere = true,
+        mentionedChannel = true,
+        mentionedGroups = emptyList(),
+        mentionedRoles = listOf("admin", "moderator"),
         extraData = emptyMap(),
     )
 
@@ -878,6 +908,10 @@ internal object MessageTestData {
             }
         ],
         "mentioned_users": [],
+        "mentioned_here": false,
+        "mentioned_channel": false,
+        "mentioned_groups": [],
+        "mentioned_roles": [],
         "reply_count": 0,
         "deleted_reply_count": 0,
         "created_at": "2020-01-01T00:00:00.000Z",
@@ -1039,5 +1073,53 @@ internal object MessageTestData {
         "thread_participants": null
     }"""
 
+    /**
+     * `mentioned_groups` is non-nullable in DownstreamMessageDto (defaults to `emptyList()`).
+     * Same explicit-null-rejection as `thread_participants` above.
+     */
+    @Language("JSON")
+    val jsonExplicitNullMentionedGroups = """{
+        "id": "msg-1",
+        "cid": "messaging:general",
+        "text": "Hello",
+        "html": "<p>Hello</p>",
+        "type": "regular",
+        "user": {"id": "user-1", "role": "user", "banned": false, "online": true},
+        "attachments": [],
+        "latest_reactions": [],
+        "own_reactions": [],
+        "mentioned_users": [],
+        "reply_count": 0,
+        "deleted_reply_count": 0,
+        "created_at": "2020-01-01T00:00:00.000Z",
+        "updated_at": "2020-01-01T00:00:00.000Z",
+        "silent": false,
+        "mentioned_groups": null
+    }"""
+
+    /**
+     * `mentioned_roles` is non-nullable in DownstreamMessageDto (defaults to `emptyList()`).
+     * Same explicit-null-rejection as `mentioned_groups` above.
+     */
+    @Language("JSON")
+    val jsonExplicitNullMentionedRoles = """{
+        "id": "msg-1",
+        "cid": "messaging:general",
+        "text": "Hello",
+        "html": "<p>Hello</p>",
+        "type": "regular",
+        "user": {"id": "user-1", "role": "user", "banned": false, "online": true},
+        "attachments": [],
+        "latest_reactions": [],
+        "own_reactions": [],
+        "mentioned_users": [],
+        "reply_count": 0,
+        "deleted_reply_count": 0,
+        "created_at": "2020-01-01T00:00:00.000Z",
+        "updated_at": "2020-01-01T00:00:00.000Z",
+        "silent": false,
+        "mentioned_roles": null
+    }"""
+
     // endregion
 }