diff --git a/server/application-server/src/main/java/de/tum/in/www1/hephaestus/activitydashboard/ActivitiesDTO.java b/server/application-server/src/main/java/de/tum/in/www1/hephaestus/activitydashboard/ActivitiesDTO.java
new file mode 100644
index 000000000..44427e46f
--- /dev/null
+++ b/server/application-server/src/main/java/de/tum/in/www1/hephaestus/activitydashboard/ActivitiesDTO.java
@@ -0,0 +1,14 @@
+package de.tum.in.www1.hephaestus.activitydashboard;
+
+import de.tum.in.www1.hephaestus.gitprovider.issue.IssueInfoDTO;
+import de.tum.in.www1.hephaestus.gitprovider.pullrequest.PullRequestInfoDTO;
+import de.tum.in.www1.hephaestus.gitprovider.pullrequestreview.PullRequestReviewInfoDTO;
+import io.micrometer.common.lang.NonNull;
+
+import java.util.List;
+
+public record ActivitiesDTO(
+        @NonNull List<PullRequestInfoDTO> pullRequests,
+        @NonNull List<IssueInfoDTO> issues,
+        @NonNull List<PullRequestReviewInfoDTO> reviews) {
+}
diff --git a/server/application-server/src/main/java/de/tum/in/www1/hephaestus/activitydashboard/ActivityDashboardController.java b/server/application-server/src/main/java/de/tum/in/www1/hephaestus/activitydashboard/ActivityDashboardController.java
new file mode 100644
index 000000000..0abb8f0fa
--- /dev/null
+++ b/server/application-server/src/main/java/de/tum/in/www1/hephaestus/activitydashboard/ActivityDashboardController.java
@@ -0,0 +1,21 @@
+package de.tum.in.www1.hephaestus.activitydashboard;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/activity")
+public class ActivityDashboardController {
+
+    @Autowired
+    private ActivityDashboardService activityDashboardService;
+
+    @GetMapping("/{login}")
+    public ResponseEntity<ActivitiesDTO> getActivitiesByUser(@PathVariable String login) {
+        return ResponseEntity.ok(activityDashboardService.getActivities(login));
+    }
+}
diff --git a/server/application-server/src/main/java/de/tum/in/www1/hephaestus/activitydashboard/ActivityDashboardService.java b/server/application-server/src/main/java/de/tum/in/www1/hephaestus/activitydashboard/ActivityDashboardService.java
new file mode 100644
index 000000000..5132fdb03
--- /dev/null
+++ b/server/application-server/src/main/java/de/tum/in/www1/hephaestus/activitydashboard/ActivityDashboardService.java
@@ -0,0 +1,41 @@
+package de.tum.in.www1.hephaestus.activitydashboard;
+
+import de.tum.in.www1.hephaestus.gitprovider.issue.Issue;
+import de.tum.in.www1.hephaestus.gitprovider.issue.IssueInfoDTO;
+import de.tum.in.www1.hephaestus.gitprovider.issue.IssueRepository;
+import de.tum.in.www1.hephaestus.gitprovider.pullrequest.PullRequest;
+import de.tum.in.www1.hephaestus.gitprovider.pullrequest.PullRequestInfoDTO;
+import de.tum.in.www1.hephaestus.gitprovider.pullrequest.PullRequestRepository;
+import de.tum.in.www1.hephaestus.gitprovider.pullrequestreview.PullRequestReview;
+import de.tum.in.www1.hephaestus.gitprovider.pullrequestreview.PullRequestReviewInfoDTO;
+import de.tum.in.www1.hephaestus.gitprovider.pullrequestreview.PullRequestReviewRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+import java.util.Set;
+
+@Service
+public class ActivityDashboardService {
+
+    @Autowired
+    private PullRequestRepository pullRequestRepository;
+
+    @Autowired
+    private IssueRepository issueRepository;
+
+    @Autowired
+    private PullRequestReviewRepository pullRequestReviewRepository;
+
+    public ActivitiesDTO getActivities(String login) {
+
+        List<PullRequest> pullRequests = pullRequestRepository.findAssignedByLoginAndStates(login, Set.of(PullRequest.State.OPEN));
+        List<Issue> issues = List.of();//issueRepository.findAssignedByLoginAndStates(login, Set.of(Issue.State.OPEN));
+        List<PullRequestReview> reviews = List.of(); //TODO: which reviews to return here: all reviews of open PRs of others? what  about where review is requested?
+        return new ActivitiesDTO(
+                pullRequests.stream().map(PullRequestInfoDTO::fromPullRequest).toList(),
+                issues.stream().map(IssueInfoDTO::fromIssue).toList(),
+                reviews.stream().map(PullRequestReviewInfoDTO::fromPullRequestReview).toList()
+        );
+    }
+}
diff --git a/server/application-server/src/main/java/de/tum/in/www1/hephaestus/gitprovider/issue/IssueInfoDTO.java b/server/application-server/src/main/java/de/tum/in/www1/hephaestus/gitprovider/issue/IssueInfoDTO.java
index dcac6917f..6e6144d6a 100644
--- a/server/application-server/src/main/java/de/tum/in/www1/hephaestus/gitprovider/issue/IssueInfoDTO.java
+++ b/server/application-server/src/main/java/de/tum/in/www1/hephaestus/gitprovider/issue/IssueInfoDTO.java
@@ -23,4 +23,27 @@ public record IssueInfoDTO(
     OffsetDateTime createdAt,
     OffsetDateTime updatedAt
 ) {
+
+    public static IssueInfoDTO fromIssue(Issue issue) {
+        return new IssueInfoDTO(
+            issue.getId(),
+            issue.getNumber(),
+            issue.getTitle(),
+            issue.getState(),
+            issue.getCommentsCount(),
+            UserInfoDTO.fromUser(issue.getAuthor()),
+            issue.getLabels()
+                .stream()
+                .map(LabelInfoDTO::fromLabel)
+                .toList(),
+            issue.getAssignees()
+                .stream()
+                .map(UserInfoDTO::fromUser)
+                .toList(),
+            issue.getRepository().getNameWithOwner(),
+            issue.getHtmlUrl(),
+            issue.getCreatedAt(),
+            issue.getUpdatedAt()
+        );
+    }
 }
\ No newline at end of file
diff --git a/server/application-server/src/main/java/de/tum/in/www1/hephaestus/gitprovider/issue/IssueRepository.java b/server/application-server/src/main/java/de/tum/in/www1/hephaestus/gitprovider/issue/IssueRepository.java
index 0402a2b73..2df1cf452 100644
--- a/server/application-server/src/main/java/de/tum/in/www1/hephaestus/gitprovider/issue/IssueRepository.java
+++ b/server/application-server/src/main/java/de/tum/in/www1/hephaestus/gitprovider/issue/IssueRepository.java
@@ -1,7 +1,25 @@
 package de.tum.in.www1.hephaestus.gitprovider.issue;
 
 import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
+
+import java.util.List;
+import java.util.Set;
 
 public interface IssueRepository extends JpaRepository<Issue, Long> {
 
+    @Query("""
+            SELECT i
+            FROM Issue i
+            LEFT JOIN FETCH i.labels
+            JOIN FETCH i.author
+            LEFT JOIN FETCH i.assignees
+            LEFT JOIN FETCH i.repository
+            WHERE (i.author.login ILIKE :assigneeLogin OR LOWER(:assigneeLogin) IN (SELECT LOWER(u.login) FROM i.assignees u)) AND i.state IN :states
+            ORDER BY i.createdAt DESC
+            """)
+    List<Issue> findAssignedByLoginAndStates(
+            @Param("assigneeLogin") String assigneeLogin,
+            @Param("states") Set<Issue.State> states);
 }