diff --git a/Week04/decorators_utku_yuksel.py b/Week04/decorators_utku_yuksel.py
new file mode 100644
index 00000000..fcd6f9c4
--- /dev/null
+++ b/Week04/decorators_utku_yuksel.py
@@ -0,0 +1,25 @@
+def performance(func):
+    def wrapper(*args, **kwargs):
+        tm = __import__('tracemalloc')
+        t = __import__('time')
+        
+        tm.start()
+        start_time = t.perf_counter()
+        
+        result = func(*args, **kwargs)
+        
+        end_time = t.perf_counter()
+        current, peak = tm.get_traced_memory()
+        tm.stop()
+        
+        performance.counter += 1
+        performance.total_time += (end_time - start_time)
+        performance.total_mem += peak
+        
+        return result
+    
+    return wrapper
+
+performance.counter = 0
+performance.total_time = 0
+performance.total_mem = 0