diff --git a/frontend/src/components/pages/ReportingPage.js b/frontend/src/components/pages/ReportingPage.js
index b443ebc..fba13f4 100644
--- a/frontend/src/components/pages/ReportingPage.js
+++ b/frontend/src/components/pages/ReportingPage.js
@@ -7,6 +7,9 @@ import { useAuth } from '../../contexts/AuthContext';
 const API_BASE = process.env.REACT_APP_API_BASE || 'http://localhost:3001/api';
 const STORAGE_KEY = 'steam_findings_columns_v2';
 
+// Sentinel used in filter Sets to represent cells with no value (blank / —)
+const EMPTY_SENTINEL = '__EMPTY__';
+
 // ---------------------------------------------------------------------------
 // Column definitions — source of truth for labels, sort behaviour, rendering
 // ---------------------------------------------------------------------------
@@ -793,22 +796,28 @@ function FilterDropdown({ anchorEl, colKey, findings, activeFilter, onFilterChan
 
     // Unique values from the full (unfiltered) findings list.
     // Multi-value columns (e.g. cves) expand their array so each item is a separate option.
+    // EMPTY_SENTINEL is prepended when any finding has a blank/null cell.
     const allValues = useMemo(() => {
         const def  = COLUMN_DEFS[colKey];
         const vals = new Set();
+        let hasEmpty = false;
         findings.forEach((f) => {
             if (def?.multiValue) {
-                (f[colKey] || []).forEach((v) => { if (String(v).trim()) vals.add(String(v).trim()); });
+                const arr = f[colKey] || [];
+                if (arr.length === 0) { hasEmpty = true; return; }
+                arr.forEach((v) => { if (String(v).trim()) vals.add(String(v).trim()); });
             } else {
                 const v = getFilterVal(f, colKey).trim();
-                if (v) vals.add(v);
+                if (v) vals.add(v); else hasEmpty = true;
             }
         });
-        return [...vals].sort((a, b) => a.localeCompare(b, undefined, { numeric: true }));
+        const sorted = [...vals].sort((a, b) => a.localeCompare(b, undefined, { numeric: true }));
+        if (hasEmpty) sorted.unshift(EMPTY_SENTINEL);
+        return sorted;
     }, [findings, colKey]);
 
     const displayed = search.trim()
-        ? allValues.filter((v) => v.toLowerCase().includes(search.toLowerCase()))
+        ? allValues.filter((v) => v === EMPTY_SENTINEL || v.toLowerCase().includes(search.toLowerCase()))
         : allValues;
 
     const isChecked    = (val) => !activeFilter || activeFilter.has(val);
@@ -890,7 +899,10 @@ function FilterDropdown({ anchorEl, colKey, findings, activeFilter, onFilterChan
                             onChange={() => toggle(val)}
                             style={{ accentColor: '#0EA5E9', width: '12px', height: '12px', flexShrink: 0, cursor: 'pointer' }}
                         />
-                        <span style={{ overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap' }}>{val}</span>
+                        {val === EMPTY_SENTINEL
+                            ? <span style={{ fontStyle: 'italic', color: '#64748B', whiteSpace: 'nowrap' }}>— empty —</span>
+                            : <span style={{ overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap' }}>{val}</span>
+                        }
                     </label>
                 ))}
             </div>
@@ -1188,9 +1200,12 @@ export default function ReportingPage({ filterDate, filterEXC }) {
                     if (!vals || vals.size === 0) return false;
                     const def = COLUMN_DEFS[key];
                     if (def?.multiValue) {
-                        return (f[key] || []).some((v) => vals.has(String(v).trim()));
+                        const arr = f[key] || [];
+                        if (arr.length === 0) return vals.has(EMPTY_SENTINEL);
+                        return arr.some((v) => vals.has(String(v).trim()));
                     }
-                    return vals.has(getFilterVal(f, key).trim());
+                    const fval = getFilterVal(f, key).trim();
+                    return fval === '' ? vals.has(EMPTY_SENTINEL) : vals.has(fval);
                 })
             );
         }