diff --git a/.changeset/share-session-stale-url.md b/.changeset/share-session-stale-url.md
new file mode 100644
index 0000000000..0f99d4b6f3
--- /dev/null
+++ b/.changeset/share-session-stale-url.md
@@ -0,0 +1,7 @@
+---
+'@hyperdx/app': patch
+---
+
+fix(app): copy correct session URL on first Share Session click
+
+The Share Session button captured `window.location.href` at render time, which ran before `nuqs` flushed `sid`/`sfrom`/`sto` into the URL. The button now reads the URL at click time via the shared `copyTextToClipboard` util, so the first copy always contains the session params (no reload needed).
diff --git a/packages/app/src/SessionSidePanel.tsx b/packages/app/src/SessionSidePanel.tsx
index 15a8ad907c..ddc26e3cca 100644
--- a/packages/app/src/SessionSidePanel.tsx
+++ b/packages/app/src/SessionSidePanel.tsx
@@ -1,5 +1,4 @@
 import { useCallback, useMemo, useState } from 'react';
-import CopyToClipboard from 'react-copy-to-clipboard';
 import { useHotkeys } from 'react-hotkeys-hook';
 import {
   DateRange,
@@ -17,6 +16,10 @@ import {
   getInitialDrawerWidthPercent,
 } from '@/components/DrawerUtils';
 import useResizable from '@/hooks/useResizable';
+import {
+  CLIPBOARD_ERROR_MESSAGE,
+  copyTextToClipboard,
+} from '@/utils/clipboard';
 
 import { Session } from './sessions';
 import SessionSubpanel from './SessionSubpanel';
@@ -125,24 +128,25 @@ export default function SessionSidePanel({
                   isFullWidth={isFullWidth}
                   onToggle={toggleFullWidth}
                 />
-                <CopyToClipboard
-                  text={window.location.href}
-                  onCopy={() => {
-                    notifications.show({
-                      color: 'green',
-                      message: 'Copied link to clipboard',
-                    });
+                <Button
+                  variant="secondary"
+                  size="sm"
+                  leftSection={<IconLink size={14} />}
+                  style={{ fontSize: '12px' }}
+                  onClick={async () => {
+                    const ok = await copyTextToClipboard(window.location.href);
+                    notifications.show(
+                      ok
+                        ? {
+                            color: 'green',
+                            message: 'Copied link to clipboard',
+                          }
+                        : { color: 'red', message: CLIPBOARD_ERROR_MESSAGE },
+                    );
                   }}
                 >
-                  <Button
-                    variant="secondary"
-                    size="sm"
-                    leftSection={<IconLink size={14} />}
-                    style={{ fontSize: '12px' }}
-                  >
-                    Share Session
-                  </Button>
-                </CopyToClipboard>
+                  Share Session
+                </Button>
                 <ActionIcon variant="secondary" size="md" onClick={onClose}>
                   <IconX size={14} />
                 </ActionIcon>
diff --git a/packages/app/src/__tests__/SessionSidePanel.test.tsx b/packages/app/src/__tests__/SessionSidePanel.test.tsx
new file mode 100644
index 0000000000..e813942c96
--- /dev/null
+++ b/packages/app/src/__tests__/SessionSidePanel.test.tsx
@@ -0,0 +1,118 @@
+import { MantineProvider } from '@mantine/core';
+import { Notifications, notifications } from '@mantine/notifications';
+import { fireEvent, render, screen, waitFor } from '@testing-library/react';
+
+import SessionSidePanel from '../SessionSidePanel';
+import {
+  CLIPBOARD_ERROR_MESSAGE,
+  copyTextToClipboard,
+} from '../utils/clipboard';
+
+jest.mock('../SessionSubpanel', () => ({
+  __esModule: true,
+  default: () => <div data-testid="session-subpanel-mock" />,
+}));
+
+jest.mock('../utils/clipboard', () => ({
+  __esModule: true,
+  CLIPBOARD_ERROR_MESSAGE:
+    'Could not access the clipboard. Check browser permissions or use HTTPS.',
+  copyTextToClipboard: jest.fn(),
+}));
+
+jest.mock('@mantine/notifications', () => {
+  const actual = jest.requireActual('@mantine/notifications');
+  return {
+    ...actual,
+    notifications: {
+      ...actual.notifications,
+      show: jest.fn(),
+    },
+  };
+});
+
+const mockedCopy = copyTextToClipboard as jest.MockedFunction<
+  typeof copyTextToClipboard
+>;
+const mockedShow = notifications.show as jest.MockedFunction<
+  typeof notifications.show
+>;
+
+function setLocationHref(url: string) {
+  const parsed = new URL(url, 'http://localhost');
+  window.history.replaceState(null, '', parsed.pathname + parsed.search);
+}
+
+function renderPanel() {
+  return render(
+    <MantineProvider>
+      <Notifications />
+      <SessionSidePanel
+        traceSource={{ id: 'trace-source' } as any}
+        sessionSource={{ id: 'session-source' } as any}
+        sessionId="sid-abc"
+        session={
+          {
+            sessionId: 'sid-abc',
+            userEmail: 'user@example.com',
+            minTimestamp: '2024-01-01T00:00:00Z',
+            maxTimestamp: '2024-01-01T01:00:00Z',
+            errorCount: '0',
+            sessionCount: '5',
+          } as any
+        }
+        dateRange={[new Date(0), new Date(1)]}
+        onClose={jest.fn()}
+      />
+    </MantineProvider>,
+  );
+}
+
+describe('SessionSidePanel - Share Session', () => {
+  beforeEach(() => {
+    mockedCopy.mockReset();
+    mockedShow.mockReset();
+    setLocationHref('/sessions?sessionSource=src&from=1&to=2');
+  });
+
+  it('copies the URL as it exists at click time, not at render time', async () => {
+    mockedCopy.mockResolvedValue(true);
+
+    renderPanel();
+
+    setLocationHref(
+      '/sessions?sessionSource=src&from=1&to=2&sid=abc&sfrom=10&sto=20',
+    );
+
+    fireEvent.click(screen.getByRole('button', { name: /share session/i }));
+
+    await waitFor(() => expect(mockedCopy).toHaveBeenCalledTimes(1));
+    expect(mockedCopy).toHaveBeenCalledWith(
+      'http://localhost/sessions?sessionSource=src&from=1&to=2&sid=abc&sfrom=10&sto=20',
+    );
+
+    await waitFor(() => expect(mockedShow).toHaveBeenCalledTimes(1));
+    expect(mockedShow).toHaveBeenCalledWith(
+      expect.objectContaining({
+        color: 'green',
+        message: 'Copied link to clipboard',
+      }),
+    );
+  });
+
+  it('shows an error notification when the clipboard copy fails', async () => {
+    mockedCopy.mockResolvedValue(false);
+
+    renderPanel();
+
+    fireEvent.click(screen.getByRole('button', { name: /share session/i }));
+
+    await waitFor(() => expect(mockedShow).toHaveBeenCalledTimes(1));
+    expect(mockedShow).toHaveBeenCalledWith(
+      expect.objectContaining({
+        color: 'red',
+        message: CLIPBOARD_ERROR_MESSAGE,
+      }),
+    );
+  });
+});