diff --git a/packages/twenty-front/src/modules/object-record/object-filter-dropdown/utils/__tests__/getOperandsForFilterType.test.ts b/packages/twenty-front/src/modules/object-record/object-filter-dropdown/utils/__tests__/getOperandsForFilterType.test.ts
index ced4abf738..ecc0b47c9d 100644
--- a/packages/twenty-front/src/modules/object-record/object-filter-dropdown/utils/__tests__/getOperandsForFilterType.test.ts
+++ b/packages/twenty-front/src/modules/object-record/object-filter-dropdown/utils/__tests__/getOperandsForFilterType.test.ts
@@ -17,6 +17,7 @@ describe('getOperandsForFilterType', () => {
 
   const numberOperands = [
     RecordFilterOperand.IS,
+    RecordFilterOperand.IS_NOT,
     RecordFilterOperand.GREATER_THAN_OR_EQUAL,
     RecordFilterOperand.LESS_THAN_OR_EQUAL,
   ];
diff --git a/packages/twenty-front/src/modules/object-record/record-filter/utils/getRecordFilterOperands.ts b/packages/twenty-front/src/modules/object-record/record-filter/utils/getRecordFilterOperands.ts
index d11443cc97..791f78357f 100644
--- a/packages/twenty-front/src/modules/object-record/record-filter/utils/getRecordFilterOperands.ts
+++ b/packages/twenty-front/src/modules/object-record/record-filter/utils/getRecordFilterOperands.ts
@@ -74,6 +74,7 @@ export const FILTER_OPERANDS_MAP = {
   ],
   NUMBER: [
     RecordFilterOperand.IS,
+    RecordFilterOperand.IS_NOT,
     RecordFilterOperand.GREATER_THAN_OR_EQUAL,
     RecordFilterOperand.LESS_THAN_OR_EQUAL,
     ...emptyOperands,
diff --git a/packages/twenty-front/src/modules/object-record/record-table/utils/buildRecordInputFromFilter.spec.ts b/packages/twenty-front/src/modules/object-record/record-table/utils/buildRecordInputFromFilter.spec.ts
index 36d013ceca..9a23800934 100644
--- a/packages/twenty-front/src/modules/object-record/record-table/utils/buildRecordInputFromFilter.spec.ts
+++ b/packages/twenty-front/src/modules/object-record/record-table/utils/buildRecordInputFromFilter.spec.ts
@@ -139,6 +139,11 @@ describe('buildValueFromFilter', () => {
         value: '5',
         expected: 5,
       },
+      {
+        operand: ViewFilterOperand.IS_NOT,
+        value: '5',
+        expected: undefined,
+      },
       {
         operand: ViewFilterOperand.GREATER_THAN_OR_EQUAL,
         value: '5',
diff --git a/packages/twenty-front/src/modules/object-record/record-table/utils/buildRecordInputFromFilter.ts b/packages/twenty-front/src/modules/object-record/record-table/utils/buildRecordInputFromFilter.ts
index 898e3e6201..c5ad711e0b 100644
--- a/packages/twenty-front/src/modules/object-record/record-table/utils/buildRecordInputFromFilter.ts
+++ b/packages/twenty-front/src/modules/object-record/record-table/utils/buildRecordInputFromFilter.ts
@@ -159,6 +159,8 @@ const computeValueFromFilterNumber = (
       return Number(value);
     case ViewFilterOperand.IS:
       return Number(value);
+    case ViewFilterOperand.IS_NOT:
+      return undefined;
     case ViewFilterOperand.IS_EMPTY:
       return undefined;
     default:
diff --git a/packages/twenty-front/src/modules/workflow/workflow-steps/workflow-actions/filter-action/utils/getStepFilterOperands.ts b/packages/twenty-front/src/modules/workflow/workflow-steps/workflow-actions/filter-action/utils/getStepFilterOperands.ts
index 74b8ceabb9..96d95db452 100644
--- a/packages/twenty-front/src/modules/workflow/workflow-steps/workflow-actions/filter-action/utils/getStepFilterOperands.ts
+++ b/packages/twenty-front/src/modules/workflow/workflow-steps/workflow-actions/filter-action/utils/getStepFilterOperands.ts
@@ -28,6 +28,7 @@ export const FILTER_OPERANDS_MAP = {
   ],
   NUMBER: [
     ViewFilterOperand.IS,
+    ViewFilterOperand.IS_NOT,
     ViewFilterOperand.GREATER_THAN_OR_EQUAL,
     ViewFilterOperand.LESS_THAN_OR_EQUAL,
     ...emptyOperands,
@@ -64,6 +65,7 @@ export const FILTER_OPERANDS_MAP = {
   UUID: [ViewFilterOperand.IS, ViewFilterOperand.IS_NOT],
   NUMERIC: [
     ViewFilterOperand.IS,
+    ViewFilterOperand.IS_NOT,
     ViewFilterOperand.GREATER_THAN_OR_EQUAL,
     ViewFilterOperand.LESS_THAN_OR_EQUAL,
     ...emptyOperands,
diff --git a/packages/twenty-server/src/modules/workflow/workflow-executor/workflow-actions/filter/utils/__tests__/evaluate-filter-conditions.util.spec.ts b/packages/twenty-server/src/modules/workflow/workflow-executor/workflow-actions/filter/utils/__tests__/evaluate-filter-conditions.util.spec.ts
index 01b408956e..7fbb7efced 100644
--- a/packages/twenty-server/src/modules/workflow/workflow-executor/workflow-actions/filter/utils/__tests__/evaluate-filter-conditions.util.spec.ts
+++ b/packages/twenty-server/src/modules/workflow/workflow-executor/workflow-actions/filter/utils/__tests__/evaluate-filter-conditions.util.spec.ts
@@ -484,6 +484,31 @@ describe('evaluateFilterConditions', () => {
         expect(evaluateFilterConditions({ filters: [filter2] })).toBe(false);
         expect(evaluateFilterConditions({ filters: [filter3] })).toBe(false);
       });
+
+      it('should handle IsNot operand correctly', () => {
+        const filter1 = createFilter(
+          ViewFilterOperand.IS_NOT,
+          25,
+          25,
+          'NUMBER',
+        );
+        const filter2 = createFilter(
+          ViewFilterOperand.IS_NOT,
+          20,
+          25,
+          'NUMBER',
+        );
+        const filter3 = createFilter(
+          ViewFilterOperand.IS_NOT,
+          30,
+          25,
+          'NUMBER',
+        );
+
+        expect(evaluateFilterConditions({ filters: [filter1] })).toBe(false);
+        expect(evaluateFilterConditions({ filters: [filter2] })).toBe(true);
+        expect(evaluateFilterConditions({ filters: [filter3] })).toBe(true);
+      });
     });
 
     describe('string and array operands', () => {
diff --git a/packages/twenty-server/src/modules/workflow/workflow-executor/workflow-actions/filter/utils/evaluate-filter-conditions.util.ts b/packages/twenty-server/src/modules/workflow/workflow-executor/workflow-actions/filter/utils/evaluate-filter-conditions.util.ts
index 743a659ec0..efebf74c31 100644
--- a/packages/twenty-server/src/modules/workflow/workflow-executor/workflow-actions/filter/utils/evaluate-filter-conditions.util.ts
+++ b/packages/twenty-server/src/modules/workflow/workflow-executor/workflow-actions/filter/utils/evaluate-filter-conditions.util.ts
@@ -349,6 +349,9 @@ function evaluateNumberFilter(filter: ResolvedFilter): boolean {
     case ViewFilterOperand.IS:
       return Number(leftValue) === Number(rightValue);
 
+    case ViewFilterOperand.IS_NOT:
+      return Number(leftValue) !== Number(rightValue);
+
     default:
       throw new Error(
         `Operand ${filter.operand} not supported for number filter`,
diff --git a/packages/twenty-shared/src/utils/filter/turnRecordFilterIntoGqlOperationFilter.ts b/packages/twenty-shared/src/utils/filter/turnRecordFilterIntoGqlOperationFilter.ts
index b2baffea11..dc517c6cd6 100644
--- a/packages/twenty-shared/src/utils/filter/turnRecordFilterIntoGqlOperationFilter.ts
+++ b/packages/twenty-shared/src/utils/filter/turnRecordFilterIntoGqlOperationFilter.ts
@@ -416,6 +416,14 @@ export const turnRecordFilterIntoRecordGqlOperationFilter = ({
               eq: parseFloat(recordFilter.value),
             } as FloatFilter,
           };
+        case RecordFilterOperand.IS_NOT:
+          return {
+            not: {
+              [correspondingFieldMetadataItem.name]: {
+                eq: parseFloat(recordFilter.value),
+              } as FloatFilter,
+            },
+          };
         default:
           throw new Error(
             `Unknown operand ${recordFilter.operand} for ${filterType} filter`,