diff --git a/src/Exceptionless.Web/ClientApp/src/lib/features/events/components/table/options.svelte.test.ts b/src/Exceptionless.Web/ClientApp/src/lib/features/events/components/table/options.svelte.test.ts
new file mode 100644
index 0000000000..ba27356aa4
--- /dev/null
+++ b/src/Exceptionless.Web/ClientApp/src/lib/features/events/components/table/options.svelte.test.ts
@@ -0,0 +1,26 @@
+import type { EventSummaryModel, StackSummaryModel, SummaryTemplateKeys } from '$features/events/components/summary';
+
+import { describe, expect, it } from 'vitest';
+
+import { getColumns } from './options.svelte';
+
+describe('getColumns', () => {
+    it('uses dedicated stack-mode controls instead of API sort parameters', () => {
+        const result = getColumns<StackSummaryModel<SummaryTemplateKeys>>('stack_frequent');
+        const columnsById = Object.fromEntries(result.map((column) => [column.id, column]));
+
+        expect(columnsById.events?.enableSorting).toBe(false);
+        expect(columnsById.first?.enableSorting).toBe(false);
+        expect(columnsById.last?.enableSorting).toBe(false);
+        expect(columnsById.events?.header).toBeTypeOf('function');
+        expect(columnsById.first?.header).toBeTypeOf('function');
+        expect(columnsById.last?.header).toBeTypeOf('function');
+    });
+
+    it('keeps summary message column unsortable', () => {
+        const result = getColumns<EventSummaryModel<SummaryTemplateKeys>>('summary');
+        const columnsById = Object.fromEntries(result.map((column) => [column.id, column]));
+
+        expect(columnsById.message?.enableSorting).toBe(false);
+    });
+});
diff --git a/src/Exceptionless.Web/ClientApp/src/lib/features/events/components/table/options.svelte.ts b/src/Exceptionless.Web/ClientApp/src/lib/features/events/components/table/options.svelte.ts
index a1d39b5f98..ef16cebf1b 100644
--- a/src/Exceptionless.Web/ClientApp/src/lib/features/events/components/table/options.svelte.ts
+++ b/src/Exceptionless.Web/ClientApp/src/lib/features/events/components/table/options.svelte.ts
@@ -12,6 +12,7 @@ import type { EventSummaryModel, StackSummaryModel, SummaryModel, SummaryTemplat
 import LogLevel from '../log-level.svelte';
 import Summary from '../summary/summary.svelte';
 import EventsUserIdentitySummaryCell from './events-user-identity-summary-cell.svelte';
+import StackSortHeader from './stack-sort-header.svelte';
 import StackStatusCell from './stack-status-cell.svelte';
 import StackUsersSummaryCell from './stack-users-summary-cell.svelte';
 
@@ -25,9 +26,11 @@ export const defaultEventColumnVisibility: ColumnVisibilityState = {
     version: false
 };
 
+export type StackSortMode = Extract<GetEventsMode, 'stack_frequent' | 'stack_new' | 'stack_recent'>;
+
 export function getColumns<TSummaryModel extends SummaryModel<SummaryTemplateKeys>>(
     mode: GetEventsMode = 'summary',
-    options?: { showType?: boolean }
+    options?: { onStackSort?: (mode: StackSortMode) => void; showType?: boolean }
 ): ColumnDef<StockFeatures, TSummaryModel, unknown>[] {
     const showType = options?.showType ?? true;
     const columns: ColumnDef<StockFeatures, TSummaryModel, unknown>[] = [
@@ -176,7 +179,12 @@ export function getColumns<TSummaryModel extends SummaryModel<SummaryTemplateKey
                 accessorKey: nameof<StackSummaryModel<SummaryTemplateKeys>>('total'),
                 cell: (prop) => renderComponent(NumberFormatter, { value: prop.getValue<number>() }),
                 enableSorting: false,
-                header: 'Events',
+                header: () =>
+                    renderComponent(StackSortHeader, {
+                        active: mode === 'stack_frequent',
+                        label: 'Events',
+                        onclick: () => options?.onStackSort?.('stack_frequent')
+                    }),
                 id: 'events',
                 meta: {
                     class: 'w-24'
@@ -186,7 +194,12 @@ export function getColumns<TSummaryModel extends SummaryModel<SummaryTemplateKey
                 accessorKey: nameof<StackSummaryModel<SummaryTemplateKeys>>('first_occurrence'),
                 cell: (prop) => renderComponent(TimeAgo, { value: prop.getValue<string>() }),
                 enableSorting: false,
-                header: 'First',
+                header: () =>
+                    renderComponent(StackSortHeader, {
+                        active: mode === 'stack_new',
+                        label: 'First',
+                        onclick: () => options?.onStackSort?.('stack_new')
+                    }),
                 id: 'first',
                 meta: {
                     class: 'w-36'
@@ -196,7 +209,12 @@ export function getColumns<TSummaryModel extends SummaryModel<SummaryTemplateKey
                 accessorKey: nameof<StackSummaryModel<SummaryTemplateKeys>>('last_occurrence'),
                 cell: (prop) => renderComponent(TimeAgo, { value: prop.getValue<string>() }),
                 enableSorting: false,
-                header: 'Last',
+                header: () =>
+                    renderComponent(StackSortHeader, {
+                        active: mode === 'stack_recent',
+                        label: 'Last',
+                        onclick: () => options?.onStackSort?.('stack_recent')
+                    }),
                 id: 'last',
                 meta: {
                     class: 'w-36'
diff --git a/src/Exceptionless.Web/ClientApp/src/lib/features/events/components/table/stack-sort-header.svelte b/src/Exceptionless.Web/ClientApp/src/lib/features/events/components/table/stack-sort-header.svelte
new file mode 100644
index 0000000000..0c5413885b
--- /dev/null
+++ b/src/Exceptionless.Web/ClientApp/src/lib/features/events/components/table/stack-sort-header.svelte
@@ -0,0 +1,19 @@
+<script lang="ts">
+    import { Button } from '$comp/ui/button';
+    import ArrowDown from '@lucide/svelte/icons/arrow-down';
+
+    interface Props {
+        active: boolean;
+        label: string;
+        onclick: () => void;
+    }
+
+    let { active, label, onclick }: Props = $props();
+</script>
+
+<Button aria-label={`Sort by ${label} descending`} aria-pressed={active} class="h-8" {onclick} variant="ghost">
+    {label}
+    {#if active}
+        <ArrowDown aria-hidden="true" />
+    {/if}
+</Button>
diff --git a/src/Exceptionless.Web/ClientApp/src/lib/features/events/components/table/stack-sort-header.svelte.test.ts b/src/Exceptionless.Web/ClientApp/src/lib/features/events/components/table/stack-sort-header.svelte.test.ts
new file mode 100644
index 0000000000..0e29592915
--- /dev/null
+++ b/src/Exceptionless.Web/ClientApp/src/lib/features/events/components/table/stack-sort-header.svelte.test.ts
@@ -0,0 +1,24 @@
+import { fireEvent, render, screen } from '@testing-library/svelte';
+import { describe, expect, it, vi } from 'vitest';
+
+import StackSortHeader from './stack-sort-header.svelte';
+
+describe('StackSortHeader', () => {
+    it('exposes the active descending sort and handles selection', async () => {
+        const onclick = vi.fn();
+        render(StackSortHeader, { active: true, label: 'Events', onclick });
+
+        const button = screen.getByRole('button', { name: 'Sort by Events descending' });
+        expect(button.getAttribute('aria-pressed')).toBe('true');
+
+        await fireEvent.click(button);
+
+        expect(onclick).toHaveBeenCalledOnce();
+    });
+
+    it('does not mark inactive sort modes as selected', () => {
+        render(StackSortHeader, { active: false, label: 'First', onclick: vi.fn() });
+
+        expect(screen.getByRole('button', { name: 'Sort by First descending' }).getAttribute('aria-pressed')).toBe('false');
+    });
+});
diff --git a/src/Exceptionless.Web/ClientApp/src/routes/(app)/stack/+page.svelte b/src/Exceptionless.Web/ClientApp/src/routes/(app)/stack/+page.svelte
index 4900d209a5..851a09bc46 100644
--- a/src/Exceptionless.Web/ClientApp/src/routes/(app)/stack/+page.svelte
+++ b/src/Exceptionless.Web/ClientApp/src/routes/(app)/stack/+page.svelte
@@ -619,6 +619,10 @@
             columnPersistenceKey: 'stacks-column-visibility',
             get columns() {
                 return getColumns<EventSummaryModel<SummaryTemplateKeys>>(eventsQueryParameters.mode, {
+                    onStackSort: (mode) => {
+                        eventsQueryParameters.mode = mode;
+                        table.setPageIndex(0);
+                    },
                     showType: !hasSingleTypeFilter(eventsQueryParameters.filter)
                 });
             },