diff --git a/internal/store/store.go b/internal/store/store.go
index 9f63575..9597348 100644
--- a/internal/store/store.go
+++ b/internal/store/store.go
@@ -1021,8 +1021,8 @@ func (s *Store) TaskEvents(ctx context.Context, taskID string, after int64, limi
 }
 
 func (s *Store) TranscriptEvents(ctx context.Context, taskID string, after int64, limit int) ([]api.Event, error) {
-	where := "task_id = ?"
-	args := []any{taskID}
+	query := "SELECT " + eventColumns + " FROM events WHERE task_id = ? AND seq > ?"
+	args := []any{taskID, after}
 	for id := taskID; ; {
 		from := ""
 		at := 0
@@ -1041,14 +1041,12 @@ func (s *Store) TranscriptEvents(ctx context.Context, taskID string, after int64
 		if err != nil {
 			return nil, err
 		}
-		where += " OR (task_id = ? AND seq <= ?)"
-		args = append(args, from, cut)
+		query += " UNION ALL SELECT " + eventColumns + " FROM events WHERE task_id = ? AND seq <= ? AND seq > ?"
+		args = append(args, from, cut, after)
 		id = from
 	}
-	rows, err := s.db.QueryContext(ctx, `
-		SELECT `+eventColumns+`
-		FROM events WHERE (`+where+`) AND seq > ? ORDER BY seq LIMIT ?
-	`, append(args, after, limit)...)
+	// Merge the indexed ranges in sequence order instead of sorting the remaining history for every page.
+	rows, err := s.db.QueryContext(ctx, query+" ORDER BY seq LIMIT ?", append(args, limit)...)
 	if err != nil {
 		return nil, err
 	}