diff --git a/packages/vestjs-runtime/src/Isolate/Isolate.ts b/packages/vestjs-runtime/src/Isolate/Isolate.ts
index e9ea74e8a..9f92a05d0 100644
--- a/packages/vestjs-runtime/src/Isolate/Isolate.ts
+++ b/packages/vestjs-runtime/src/Isolate/Isolate.ts
@@ -2,6 +2,7 @@ import { CB, Maybe, Nullable, isNotNullish, isPromise } from 'vest-utils';
 
 import { IsolateKeys } from 'IsolateKeys';
 import { IsolateMutator } from 'IsolateMutator';
+import { IsolateStatus } from 'IsolateStatus';
 import { Reconciler } from 'Reconciler';
 import * as VestRuntime from 'VestRuntime';
 
@@ -13,6 +14,7 @@ export type TIsolate<P extends IsolatePayload = IsolatePayload> = {
   [IsolateKeys.Type]: string;
   [IsolateKeys.Keys]: Nullable<Record<string, TIsolate>>;
   [IsolateKeys.Data]: DataOnly<P>;
+  [IsolateKeys.Status]: IsolateStatus;
   children: Nullable<TIsolate[]>;
   key: IsolateKey;
   output: any;
@@ -85,11 +87,17 @@ function useRunAsNew<Callback extends CB = CB>(
       const output = callback(current);
 
       if (isPromise(output)) {
+        IsolateMutator.setPending(current);
+
         output.then(iso => {
           if (Isolate.isIsolate(iso)) {
             IsolateMutator.addChild(current, iso);
           }
+
+          IsolateMutator.setDone(current);
         });
+      } else {
+        IsolateMutator.setDone(current);
       }
 
       return output;
@@ -112,6 +120,7 @@ function baseIsolate(
     [IsolateKeys.Parent]: null,
     [IsolateKeys.Type]: type,
     [IsolateKeys.Data]: data as IsolateData,
+    [IsolateKeys.Status]: IsolateStatus.INITIAL,
     children: null,
     key,
     output: null,
diff --git a/packages/vestjs-runtime/src/Isolate/IsolateKeys.ts b/packages/vestjs-runtime/src/Isolate/IsolateKeys.ts
index 8a1c410ac..66cf037ef 100644
--- a/packages/vestjs-runtime/src/Isolate/IsolateKeys.ts
+++ b/packages/vestjs-runtime/src/Isolate/IsolateKeys.ts
@@ -5,6 +5,7 @@ export enum IsolateKeys {
   Parent = 'parent',
   Data = 'data',
   AllowReorder = 'allowReorder',
+  Status = 'status',
 }
 
 enum MinifiedKeys {
@@ -14,6 +15,7 @@ enum MinifiedKeys {
   Parent = 'P',
   Data = 'D',
   AllowReorder = 'aR',
+  Status = 'S',
 }
 
 export const KeyToMinified = {
@@ -23,6 +25,7 @@ export const KeyToMinified = {
   [IsolateKeys.Data]: MinifiedKeys.Data,
   [IsolateKeys.Key]: MinifiedKeys.Key,
   [IsolateKeys.AllowReorder]: MinifiedKeys.AllowReorder,
+  [IsolateKeys.Status]: MinifiedKeys.Status,
 };
 
 // This const is an object that looks like this:
diff --git a/packages/vestjs-runtime/src/Isolate/IsolateMutator.ts b/packages/vestjs-runtime/src/Isolate/IsolateMutator.ts
index 79467c1f5..1c19c4b06 100644
--- a/packages/vestjs-runtime/src/Isolate/IsolateMutator.ts
+++ b/packages/vestjs-runtime/src/Isolate/IsolateMutator.ts
@@ -1,6 +1,7 @@
 import { Nullable, invariant, isNullish } from 'vest-utils';
 
 import { TIsolate } from 'Isolate';
+import { IsolateStatus } from 'IsolateStatus';
 
 export class IsolateMutator {
   static setParent(isolate: TIsolate, parent: Nullable<TIsolate>): TIsolate {
@@ -50,4 +51,12 @@ export class IsolateMutator {
   static setData(isolate: TIsolate, data: any): void {
     isolate.data = data;
   }
+
+  static setPending(isolate: TIsolate): void {
+    isolate.status = IsolateStatus.PENDING;
+  }
+
+  static setDone(isolate: TIsolate): void {
+    isolate.status = IsolateStatus.DONE;
+  }
 }
diff --git a/packages/vestjs-runtime/src/Isolate/IsolateStatus.ts b/packages/vestjs-runtime/src/Isolate/IsolateStatus.ts
new file mode 100644
index 000000000..f8a4b8d5e
--- /dev/null
+++ b/packages/vestjs-runtime/src/Isolate/IsolateStatus.ts
@@ -0,0 +1,5 @@
+export enum IsolateStatus {
+  PENDING = 'PENDING',
+  DONE = 'DONE',
+  INITIAL = 'INITIAL',
+}
diff --git a/packages/vestjs-runtime/src/Isolate/__tests__/Isolate.test.ts b/packages/vestjs-runtime/src/Isolate/__tests__/Isolate.test.ts
index a27b0ea22..da7dfbc3d 100644
--- a/packages/vestjs-runtime/src/Isolate/__tests__/Isolate.test.ts
+++ b/packages/vestjs-runtime/src/Isolate/__tests__/Isolate.test.ts
@@ -93,6 +93,26 @@ describe('Isolate', () => {
         expect(child.parent).toBe(parent);
       });
     });
+
+    test('Isolate status is INITIAL before running', () => {
+      const control = jest.fn();
+      withRunTime(() => {
+        return Isolate.create(IsolateType.Isolate, () => {
+          expect(useAvailableRoot().status).toBe('INITIAL');
+          control();
+        });
+      });
+
+      expect(control).toHaveBeenCalled();
+    });
+
+    test('Isolate status is DONE after running', () => {
+      const isolate = withRunTime(() => {
+        return Isolate.create(IsolateType.Isolate, () => {});
+      });
+
+      expect(isolate.status).toBe('DONE');
+    });
   });
 
   function withRunTime<T>(fn: CB<T>) {
diff --git a/packages/vestjs-runtime/src/Isolate/__tests__/__snapshots__/asyncIsolate.test.ts.snap b/packages/vestjs-runtime/src/Isolate/__tests__/__snapshots__/asyncIsolate.test.ts.snap
index 0b332465b..969b3cf61 100644
--- a/packages/vestjs-runtime/src/Isolate/__tests__/__snapshots__/asyncIsolate.test.ts.snap
+++ b/packages/vestjs-runtime/src/Isolate/__tests__/__snapshots__/asyncIsolate.test.ts.snap
@@ -18,6 +18,7 @@ exports[`AsyncIsolate It should resolve async isolate into the parent 2`] = `
           "keys": null,
           "output": undefined,
           "parent": [Circular],
+          "status": "DONE",
         },
         {
           "$type": "UGrandChild_2",
@@ -28,6 +29,7 @@ exports[`AsyncIsolate It should resolve async isolate into the parent 2`] = `
           "keys": null,
           "output": undefined,
           "parent": [Circular],
+          "status": "DONE",
         },
         {
           "$type": "UGrandChild_3",
@@ -38,6 +40,7 @@ exports[`AsyncIsolate It should resolve async isolate into the parent 2`] = `
           "keys": null,
           "output": undefined,
           "parent": [Circular],
+          "status": "DONE",
         },
       ],
       "data": {},
@@ -45,6 +48,7 @@ exports[`AsyncIsolate It should resolve async isolate into the parent 2`] = `
       "keys": null,
       "output": undefined,
       "parent": [Circular],
+      "status": "DONE",
     },
   ],
   "data": {},
@@ -52,5 +56,20 @@ exports[`AsyncIsolate It should resolve async isolate into the parent 2`] = `
   "keys": null,
   "output": Promise {},
   "parent": null,
+  "status": "DONE",
+}
+`;
+
+exports[`AsyncIsolate It should set the isolate state to pending 1`] = `
+{
+  "$type": "URoot",
+  "allowReorder": undefined,
+  "children": null,
+  "data": {},
+  "key": null,
+  "keys": null,
+  "output": Promise {},
+  "parent": null,
+  "status": "PENDING",
 }
 `;
diff --git a/packages/vestjs-runtime/src/Isolate/__tests__/asyncIsolate.test.ts b/packages/vestjs-runtime/src/Isolate/__tests__/asyncIsolate.test.ts
index 05c8ae942..a0e63ae2d 100644
--- a/packages/vestjs-runtime/src/Isolate/__tests__/asyncIsolate.test.ts
+++ b/packages/vestjs-runtime/src/Isolate/__tests__/asyncIsolate.test.ts
@@ -8,12 +8,10 @@ describe('AsyncIsolate', () => {
   test('It should resolve async isolate into the parent', () => {
     return new Promise<void>(async done => {
       let root = {} as TIsolate;
-      const control = jest.fn();
       withRunTime(() => {
         // Create root isolate from which all others will be created
         root = Isolate.create('URoot', genChildren);
       });
-      expect(control).not.toHaveBeenCalled();
       expect(root).toMatchInlineSnapshot(`
         {
           "$type": "URoot",
@@ -24,6 +22,7 @@ describe('AsyncIsolate', () => {
           "keys": null,
           "output": Promise {},
           "parent": null,
+          "status": "PENDING",
         }
       `);
       await wait(10);
@@ -46,6 +45,32 @@ describe('AsyncIsolate', () => {
       done();
     });
   });
+
+  test('It should set the isolate state to pending', () => {
+    return new Promise<void>(done => {
+      let root = {} as TIsolate;
+      withRunTime(() => {
+        // Create root isolate from which all others will be created
+        root = Isolate.create('URoot', genChildren);
+      });
+      expect(root).toMatchSnapshot();
+      expect(root?.status).toBe('PENDING');
+      done();
+    });
+  });
+
+  it('should set the isolate state to done when complete', () => {
+    return new Promise<void>(async done => {
+      let root = {} as TIsolate;
+      withRunTime(() => {
+        // Create root isolate from which all others will be created
+        root = Isolate.create('URoot', genChildren);
+      });
+      await wait(10);
+      expect(root?.status).toBe('DONE');
+      done();
+    });
+  });
 });
 
 function withRunTime<T>(fn: CB<T>) {
diff --git a/packages/vestjs-runtime/src/exports/__tests__/IsolateSerializer.test.ts b/packages/vestjs-runtime/src/exports/__tests__/IsolateSerializer.test.ts
index 87908c54c..07fb055a1 100644
--- a/packages/vestjs-runtime/src/exports/__tests__/IsolateSerializer.test.ts
+++ b/packages/vestjs-runtime/src/exports/__tests__/IsolateSerializer.test.ts
@@ -29,21 +29,25 @@ describe('IsolateSerializer', () => {
                 "some_data": true,
               },
               "parent": [Circular],
+              "status": "DONE",
             },
             {
               "$type": "UChild_2",
               "data": {},
               "parent": [Circular],
+              "status": "DONE",
             },
             {
               "$type": "UChild_3",
               "data": {},
               "parent": [Circular],
+              "status": "DONE",
             },
           ],
           "data": {
             "some_data": true,
           },
+          "status": "DONE",
         }
       `);
     });
diff --git a/packages/vestjs-runtime/src/exports/__tests__/__snapshots__/IsolateSerializer.test.ts.snap b/packages/vestjs-runtime/src/exports/__tests__/__snapshots__/IsolateSerializer.test.ts.snap
index 197a5a7cb..6adbe02aa 100644
--- a/packages/vestjs-runtime/src/exports/__tests__/__snapshots__/IsolateSerializer.test.ts.snap
+++ b/packages/vestjs-runtime/src/exports/__tests__/__snapshots__/IsolateSerializer.test.ts.snap
@@ -1,3 +1,3 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`IsolateSerializer serialize Should produce serialized dump 1`] = `"{"children":[{"$":"UChild_1","D":{"some_data":true}},{"$":"UChild_2","D":{}},{"$":"UChild_3","D":{}}],"$":"URoot","D":{"some_data":true}}"`;
+exports[`IsolateSerializer serialize Should produce serialized dump 1`] = `"{"children":[{"$":"UChild_1","D":{"some_data":true},"S":"DONE"},{"$":"UChild_2","D":{},"S":"DONE"},{"$":"UChild_3","D":{},"S":"DONE"}],"$":"URoot","D":{"some_data":true},"S":"DONE"}"`;
diff --git a/packages/vestjs-runtime/src/exports/test-utils.ts b/packages/vestjs-runtime/src/exports/test-utils.ts
index f5fa3ead4..a623f6f8a 100644
--- a/packages/vestjs-runtime/src/exports/test-utils.ts
+++ b/packages/vestjs-runtime/src/exports/test-utils.ts
@@ -1,5 +1,6 @@
 import { TIsolate } from 'Isolate';
 import { IsolateKeys } from 'IsolateKeys';
+import { IsolateStatus } from 'IsolateStatus';
 
 export function genTestIsolate(data: Record<string, any> = {}): TIsolate {
   return {
@@ -9,6 +10,7 @@ export function genTestIsolate(data: Record<string, any> = {}): TIsolate {
     keys: {},
     output: null,
     parent: null,
+    status: IsolateStatus.INITIAL,
     [IsolateKeys.Type]: 'UnitTest',
   };
 }
diff --git a/packages/vestjs-runtime/src/vestjs-runtime.ts b/packages/vestjs-runtime/src/vestjs-runtime.ts
index ce38c7785..b9d162788 100644
--- a/packages/vestjs-runtime/src/vestjs-runtime.ts
+++ b/packages/vestjs-runtime/src/vestjs-runtime.ts
@@ -1,4 +1,5 @@
 export { IsolateKey, TIsolate, Isolate } from 'Isolate';
+export { IsolateStatus } from 'IsolateStatus';
 export { Reconciler, IRecociler } from 'Reconciler';
 export * as Walker from 'IsolateWalker';
 export { RuntimeApi as VestRuntime } from 'VestRuntime';
diff --git a/packages/vestjs-runtime/tsconfig.json b/packages/vestjs-runtime/tsconfig.json
index d748a0d0e..156a69a70 100644
--- a/packages/vestjs-runtime/tsconfig.json
+++ b/packages/vestjs-runtime/tsconfig.json
@@ -15,6 +15,7 @@
       "test-utils": ["./src/exports/test-utils.ts"],
       "IsolateSerializer": ["./src/exports/IsolateSerializer.ts"],
       "ErrorStrings": ["./src/errors/ErrorStrings.ts"],
+      "IsolateStatus": ["./src/Isolate/IsolateStatus.ts"],
       "IsolateSelectors": ["./src/Isolate/IsolateSelectors.ts"],
       "IsolateMutator": ["./src/Isolate/IsolateMutator.ts"],
       "IsolateKeys": ["./src/Isolate/IsolateKeys.ts"],