diff --git a/services/dataProcessor.ts b/services/dataProcessor.ts
index 4052bb2..674c6df 100644
--- a/services/dataProcessor.ts
+++ b/services/dataProcessor.ts
@@ -629,13 +629,16 @@ export const mergeSalesAndAdsData = (
 
 // --- EXISTING HELPERS ---
 
-// Filter Ads Data by Country, Year, Week, ASIN, and Product Line
+// Filter Ads Data by Country, Year, Week, ASIN, SKU, and Product Line
 export const filterAdsData = (
     adsData: AdsRecord[],
     filters: FilterState,
-    asinMetadata?: Map<string, { line: string }>
+    asinMetadata?: Map<string, { sku: string; line: string }>
 ): AdsRecord[] => {
     return adsData.filter(ad => {
+        const asin = ad.asin.trim().toUpperCase();
+        const meta = asinMetadata?.get(asin);
+
         // Country/Customer match (ads use 'country', sales use 'customer')
         const countryMatch = filters.customer.length === 0
             ? PAN_EU_COUNTRIES.some(c => c.toUpperCase() === ad.country.toUpperCase())
@@ -651,16 +654,21 @@ export const filterAdsData = (
 
         // ASIN match
         const asinMatch = filters.asin.length === 0 ||
-            filters.asin.some(a => a.toUpperCase() === ad.asin.toUpperCase());
+            filters.asin.some(a => a.toUpperCase() === asin);
+
+        // SKU match (Requires metadata)
+        let skuMatch = true;
+        if (filters.sku.length > 0) {
+            skuMatch = meta ? filters.sku.some(s => s.toUpperCase() === meta.sku.toUpperCase()) : false;
+        }
 
         // Line match (Requires metadata)
         let lineMatch = true;
-        if (filters.line.length > 0 && asinMetadata) {
-            const meta = asinMetadata.get(ad.asin.trim().toUpperCase());
+        if (filters.line.length > 0) {
             lineMatch = meta ? filters.line.includes(meta.line) : false;
         }
 
-        return countryMatch && yearMatch && weekMatch && asinMatch && lineMatch;
+        return countryMatch && yearMatch && weekMatch && asinMatch && skuMatch && lineMatch;
     });
 };