diff --git a/demo/events.js b/demo/events.js
index d32bbeb7..bca7ae3f 100644
--- a/demo/events.js
+++ b/demo/events.js
@@ -1,59 +1,59 @@
 function addEvents(grid, id) {
-  let g = (id !== undefined ? 'grid' + id + ' ' : '');
+  let g = (id !== undefined ? 'grid' + id : '');
 
   grid.on('added removed change', function(event, items) {
     let str = '';
     items.forEach(function(item) { str += ' (' + item.x + ',' + item.y + ' ' + item.w + 'x' + item.h + ')'; });
-    console.log(g + event.type + ' ' + items.length + ' items (x,y w h):' + str );
+    console.log((g || items[0].grid.opts.id) + ' ' + event.type + ' ' + items.length + ' items (x,y w h):' + str );
   })
   .on('enable', function(event) {
-    let grid = event.target;
-    console.log(g + 'enable');
+    let el = event.target;
+    console.log((g || el.gridstackNode.grid.opts.id) + ' enable');
   })
   .on('disable', function(event) {
-    let grid = event.target;
-    console.log(g + 'disable');
+    let el = event.target;
+    console.log((g || el.gridstackNode.grid.opts.id) + ' disable');
   })
   .on('dragstart', function(event, el) {
     let n = el.gridstackNode;
     let x = el.getAttribute('gs-x'); // verify node (easiest) and attr are the same
     let y = el.getAttribute('gs-y');
-    console.log(g + 'dragstart ' + (n.content || '') + ' pos: (' + n.x + ',' + n.y + ') = (' + x + ',' + y + ')');
+    console.log((g || el.gridstackNode.grid.opts.id) + ' dragstart ' + (n.content || '') + ' pos: (' + n.x + ',' + n.y + ') = (' + x + ',' + y + ')');
   })
   .on('drag', function(event, el) {
     let n = el.gridstackNode;
     let x = el.getAttribute('gs-x'); // verify node (easiest) and attr are the same
     let y = el.getAttribute('gs-y');
-    // console.log(g + 'drag ' + (n.content || '') + ' pos: (' + n.x + ',' + n.y + ') = (' + x + ',' + y + ')');
+    // console.log((g || el.gridstackNode.grid.opts.id) + ' drag ' + (n.content || '') + ' pos: (' + n.x + ',' + n.y + ') = (' + x + ',' + y + ')');
   })
   .on('dragstop', function(event, el) {
     let n = el.gridstackNode;
     let x = el.getAttribute('gs-x'); // verify node (easiest) and attr are the same
     let y = el.getAttribute('gs-y');
-    console.log(g + 'dragstop ' + (n.content || '') + ' pos: (' + n.x + ',' + n.y + ') = (' + x + ',' + y + ')');
+    console.log((g || el.gridstackNode.grid.opts.id) + ' dragstop ' + (n.content || '') + ' pos: (' + n.x + ',' + n.y + ') = (' + x + ',' + y + ')');
   })
   .on('dropped', function(event, previousNode, newNode) {
     if (previousNode) {
-      console.log(g + 'dropped - Removed widget from grid:', previousNode);
+      console.log((g || previousNode.grid.opts.id) + ' dropped - Removed widget from grid:', previousNode);
     }
     if (newNode) {
-      console.log(g + 'dropped - Added widget in grid:', newNode);
+      console.log((g || newNode.grid.opts.id) + ' dropped - Added widget in grid:', newNode);
     }
   })
   .on('resizestart', function(event, el) {
     let n = el.gridstackNode;
     let rec = el.getBoundingClientRect();
-    console.log(`${g} resizestart ${n.content || ''} size: (${n.w}x${n.h}) = (${Math.round(rec.width)}x${Math.round(rec.height)})px`);
+    console.log(`${g || el.gridstackNode.grid.opts.id} resizestart ${n.content || ''} size: (${n.w}x${n.h}) = (${Math.round(rec.width)}x${Math.round(rec.height)})px`);
 
   })
   .on('resize', function(event, el) {
     let n = el.gridstackNode;
     let rec = el.getBoundingClientRect();
-    console.log(`${g} resize ${n.content || ''} size: (${n.w}x${n.h}) = (${Math.round(rec.width)}x${Math.round(rec.height)})px`);
+    console.log(`${g || el.gridstackNode.grid.opts.id} resize ${n.content || ''} size: (${n.w}x${n.h}) = (${Math.round(rec.width)}x${Math.round(rec.height)})px`);
   })
   .on('resizestop', function(event, el) {
     let n = el.gridstackNode;
     let rec = el.getBoundingClientRect();
-    console.log(`${g} resizestop ${n.content || ''} size: (${n.w}x${n.h}) = (${Math.round(rec.width)}x${Math.round(rec.height)})px`);
+    console.log(`${g || el.gridstackNode.grid.opts.id} resizestop ${n.content || ''} size: (${n.w}x${n.h}) = (${Math.round(rec.width)}x${Math.round(rec.height)})px`);
   });
 }
\ No newline at end of file
diff --git a/demo/nested.html b/demo/nested.html
index 2f80b9e7..d8a099c7 100644
--- a/demo/nested.html
+++ b/demo/nested.html
@@ -40,7 +40,7 @@ <h1>Nested grids demo</h1>
     <a class="btn btn-primary" onClick="load(false)" href="#">Load</a>
     <br><br>
     <!-- grid will be added here -->
-  </div>d
+  </div>
   <script src="events.js"></script>
   <script type="text/javascript">
     // NOTE: REAL apps would sanitize-html or DOMPurify before blinding setting innerHTML. see #2736
@@ -74,12 +74,8 @@ <h1>Nested grids demo</h1>
     // create and load it all from JSON above
     let grid = GridStack.addGrid(document.querySelector('.container-fluid'), options);
 
-    // add debug event handlers to each grid (no global set on parent yet)
-    let gridEls = GridStack.getElements('.grid-stack');
-    gridEls.forEach(gridEl => {
-      let grid = gridEl.gridstack;
-      addEvents(grid, grid.opts.id);
-    })
+    // add debug event handlers to main grid (new v12.1 handles sub-grids too)
+    addEvents(grid);
 
     // setup drag drop behavior
     let sidebarContent = [
diff --git a/doc/CHANGES.md b/doc/CHANGES.md
index 763fb817..32165bfd 100644
--- a/doc/CHANGES.md
+++ b/doc/CHANGES.md
@@ -5,7 +5,7 @@ Change log
 <!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->
 **Table of Contents**  *generated with [DocToc](http://doctoc.herokuapp.com/)*
 
-- [12.0.0-dev (TBD)](#1200-dev-tbd)
+- [12.1.0 (2024-04-23)](#1210-2024-04-23)
 - [12.0.0 (2025-04-12)](#1200-2025-04-12)
 - [11.5.1 (2025-03-23)](#1151-2025-03-23)
 - [11.5.0 (2025-03-16)](#1150-2025-03-16)
@@ -125,12 +125,13 @@ Change log
 
 <!-- END doctoc generated TOC please keep comment here to allow auto update -->
 
-## 12.0.0-dev (TBD)
-* rem [#3022](https://github.com/gridstack/gridstack.js/pull/3022) removed ES5 support (IE doesn't support CSS vars needed now)
-* rem [#3027](https://github.com/gridstack/gridstack.js/pull/3027) remove legacy code support for disableOneColumnMode, oneColumnSize, oneColumnModeDomSort
+## 12.1.0 (2024-04-23)
+* feat [#2671](https://github.com/gridstack/gridstack.js/issues/2671) subgrid now propagate events to topmost grid. Use `el.gridstackNode.grid` to know which (sub) grid.
 * fix [#3028](https://github.com/gridstack/gridstack.js/pull/3028) `updateOptions()` no longer modifies passed in struct. only field we check are being handled too.
 * fix [#3029](https://github.com/gridstack/gridstack.js/pull/3029) `resizeToContent()` fix for nested grid with content above
 * fix [#3030](https://github.com/gridstack/gridstack.js/pull/3030) `resizeToContentCheck()` wasn't blocking _ignoreLayoutsNodeChange at end of the loop
+* rem [#3022](https://github.com/gridstack/gridstack.js/pull/3022) removed ES5 support (IE doesn't support CSS vars needed now)
+* rem [#3027](https://github.com/gridstack/gridstack.js/pull/3027) remove legacy code support for disableOneColumnMode, oneColumnSize, oneColumnModeDomSort
 
 ## 12.0.0 (2025-04-12)
 * feat: [#2854](https://github.com/gridstack/gridstack.js/pull/2854) Removed dynamic stylesheet and migrated to CSS vars. Thank you [lmartorella](https://github.com/lmartorella)
diff --git a/src/gridstack.ts b/src/gridstack.ts
index 147fabfc..29696a8d 100644
--- a/src/gridstack.ts
+++ b/src/gridstack.ts
@@ -1579,7 +1579,11 @@ export class GridStack {
   /** @internal */
   protected _triggerEvent(type: string, data?: GridStackNode[]): GridStack {
     const event = data ? new CustomEvent(type, { bubbles: false, detail: data }) : new Event(type);
-    this.el.dispatchEvent(event);
+    // check if we're nested, and if so call the outermost grid to trigger the event
+    // eslint-disable-next-line @typescript-eslint/no-this-alias
+    let grid: GridStack = this;
+    while (grid.parentGridNode) grid = grid.parentGridNode.grid;
+    grid.el.dispatchEvent(event);
     return this;
   }
 
@@ -2374,9 +2378,7 @@ export class GridStack {
       /** called when item starts moving/resizing */
       const onStartMoving = (event: Event, ui: DDUIData) => {
         // trigger any 'dragstart' / 'resizestart' manually
-        if (this._gsEventHandler[event.type]) {
-          this._gsEventHandler[event.type](event, event.target);
-        }
+        this.triggerEvent(event, event.target as GridItemHTMLElement);
         cellWidth = this.cellWidth();
         cellHeight = this.getCellHeight(true); // force pixels for calculations
 
@@ -2422,9 +2424,7 @@ export class GridStack {
             // move to new placeholder location
             this._writePosAttr(target, node);
           }
-          if (this._gsEventHandler[event.type]) {
-            this._gsEventHandler[event.type](event, target);
-          }
+          this.triggerEvent(event, target);
         }
         // @ts-ignore
         this._extraDragRow = 0;// @ts-ignore
@@ -2603,9 +2603,17 @@ export class GridStack {
       if (!node._sidebarOrig) {
         this._writePosAttr(target, node);
       }
-      if (this._gsEventHandler[event.type]) {
-        this._gsEventHandler[event.type](event, target);
-      }
+      this.triggerEvent(event, target);
+    }
+  }
+
+  /** call given event callback on our main top-most grid (if we're nested) */
+  protected triggerEvent(event: Event, target: GridItemHTMLElement) {
+    // eslint-disable-next-line @typescript-eslint/no-this-alias
+    let grid: GridStack = this;
+    while (grid.parentGridNode) grid = grid.parentGridNode.grid;
+    if (grid._gsEventHandler[event.type]) {
+      grid._gsEventHandler[event.type](event, target);
     }
   }