diff --git a/scripts/patch-history.py b/scripts/patch-history.py
new file mode 100644
index 00000000..3bd20e84
--- /dev/null
+++ b/scripts/patch-history.py
@@ -0,0 +1,181 @@
+#!/usr/bin/env python3
+# SPDX-License-Identifier: MIT
+# Copyright (c) 2026 Arm Limited
+"""Report the age, change history, and upstream status of tracked patches."""
+
+import argparse
+import csv
+import datetime as dt
+import re
+import subprocess
+import sys
+from collections import Counter, defaultdict
+from pathlib import Path
+
+
+def git(root, *args):
+    result = subprocess.run(['git', '-C', str(root), *args], capture_output=True)
+    if result.returncode:
+        raise RuntimeError(result.stderr.decode('utf-8', 'replace').strip())
+    return result.stdout
+
+
+def metadata(root, path):
+    raw = git(root, 'log', '--follow', '--format=%as', '--', path)
+    dates = [x for x in raw.decode().splitlines() if x]
+    if not dates:
+        return '', '', 0
+    return dates[-1], dates[0], len(dates)
+
+
+def upstream_status(path):
+    try:
+        content = path.read_text(encoding='utf-8', errors='replace')
+    except OSError as exc:
+        print(f'warning: cannot read {path}: {exc}', file=sys.stderr)
+        return 'Missing', ''
+    match = re.search(r'^\s*Upstream-Status:\s*(.*?)\s*$', content, re.I | re.M)
+    if not match:
+        return 'Missing', ''
+    full = match.group(1)
+    token = re.match(r'([^\s\[:]+)', full)
+    return (token.group(1) if token else 'Unknown'), full
+
+
+def layer_of(path):
+    return next((p for p in path.parts if p.startswith('meta-')), '(root)')
+
+
+def component_of(path):
+    # For standard recipes-*/<component>/files/foo.patch, choose <component>.
+    parts = path.parts
+    for i, part in enumerate(parts[:-1]):
+        if part.startswith('recipes-') and i + 1 < len(parts) - 1:
+            return parts[i + 1]
+    return path.parent.name
+
+
+def main():
+    parser = argparse.ArgumentParser(
+        description='Report Git patch age and upstreaming status from a meta-arm checkout.',
+        epilog='''Examples:
+  scripts/patch-history.py
+  scripts/patch-history.py --verbose --sort age
+  scripts/patch-history.py --verbose --sort status
+  scripts/patch-history.py --layer meta-arm-bsp
+  scripts/patch-history.py --output bsp-patches.csv
+
+Only Git-tracked .patch and .diff files are scanned. Git rename history is
+followed where possible. Ages are calculated from the oldest and newest
+commits touching each file, not from patch header dates. By default, a
+summary is printed to the terminal. --verbose also lists each patch and
+its age. --output writes CSV for spreadsheet use; otherwise no file is
+created. No files in the tree are changed.''',
+        formatter_class=argparse.RawDescriptionHelpFormatter,
+    )
+    parser.add_argument('--layer', help='Restrict scanning to this layer/directory relative to repository root')
+    parser.add_argument('--output', '-o', help='Write CSV to this path (no CSV is written by default)')
+    parser.add_argument('--sort', choices=['path', 'age', 'updated', 'component', 'status'], default='path',
+                        help='Patch listing and CSV row order (status: grouped alphabetically, oldest first within each status; age and updated: oldest first)')
+    parser.add_argument('--summary', action='store_true', help='Print aggregate statistics (already the default; retained for compatibility)')
+    parser.add_argument('--verbose', '-v', action='store_true', help='List every patch with its age and upstream status in the terminal')
+    args = parser.parse_args()
+
+    try:
+        root = Path(subprocess.check_output(['git', 'rev-parse', '--show-toplevel'], stderr=subprocess.PIPE,
+                                            text=True).strip()).resolve()
+    except subprocess.CalledProcessError:
+        parser.error('run this from inside a Git repository')
+    if args.layer:
+        target = (root / args.layer).resolve()
+        if not target.is_relative_to(root) or not target.is_dir():
+            parser.error('--layer must name an existing directory inside the repository')
+        scope = target.relative_to(root).as_posix()
+    else:
+        scope = None
+
+    try:
+        files = git(root, 'ls-files', '-z', '--', *( [scope] if scope else [] )).split(b'\0')
+    except RuntimeError as exc:
+        parser.error(str(exc))
+    today = dt.date.today()
+    rows = []
+    for encoded in files:
+        if not encoded:
+            continue
+        relative = encoded.decode('utf-8', 'surrogateescape')
+        if Path(relative).suffix.lower() not in ('.patch', '.diff'):
+            continue
+        absolute = root / relative
+        if not absolute.is_file():
+            continue
+        try:
+            added, updated, changes = metadata(root, relative)
+        except RuntimeError as exc:
+            print(f'warning: history unavailable for {relative}: {exc}', file=sys.stderr)
+            added, updated, changes = '', '', 0
+        status, detail = upstream_status(absolute)
+        rows.append({
+            'Patch Added': added,
+            'Last Updated': updated,
+            'Times Changed': changes,
+            'Component': component_of(Path(relative)),
+            'Upstream Status': status,
+            'Patch Age (Days)': (today - dt.date.fromisoformat(added)).days if added else '',
+            'Days Since Update': (today - dt.date.fromisoformat(updated)).days if updated else '',
+            'Layer': layer_of(Path(relative)),
+            'Patch File': relative,
+            'Upstream Status Detail': detail,
+        })
+    keys = {
+        'path': lambda r: r['Patch File'],
+        'age': lambda r: (-(r['Patch Age (Days)'] if isinstance(r['Patch Age (Days)'], int) else -1), r['Patch File']),
+        'updated': lambda r: (-(r['Days Since Update'] if isinstance(r['Days Since Update'], int) else -1), r['Patch File']),
+        'component': lambda r: (r['Component'], r['Patch File']),
+        'status': lambda r: (r['Upstream Status'].lower(), -(r['Patch Age (Days)'] if isinstance(r['Patch Age (Days)'], int) else -1), r['Patch File']),
+    }
+    rows.sort(key=keys[args.sort])
+    if args.output:
+        output = Path(args.output)
+        fields = ['Patch Added', 'Last Updated', 'Times Changed', 'Component', 'Upstream Status',
+                  'Patch Age (Days)', 'Days Since Update', 'Layer', 'Patch File', 'Upstream Status Detail']
+        try:
+            with output.open('w', newline='', encoding='utf-8') as stream:
+                writer = csv.DictWriter(stream, fieldnames=fields)
+                writer.writeheader()
+                writer.writerows(rows)
+        except OSError as exc:
+            parser.exit(1, f'error: cannot write {output}: {exc}\n')
+        print(f'Wrote {len(rows)} patches to {output}')
+
+    if args.verbose:
+        print('\nPatch Details (age in days)')
+        print('===========================')
+        for row in rows:
+            age = row['Patch Age (Days)']
+            print(f"{str(age) if age != '' else 'n/a':>7}  {row['Upstream Status']:<16}  {row['Patch File']}")
+
+    if True:  # Summary is the default terminal output.
+        ages = [r['Patch Age (Days)'] for r in rows if isinstance(r['Patch Age (Days)'], int)]
+        print('\nPatch Maintenance Summary')
+        print('=========================')
+        print(f'Total patches:              {len(rows)}')
+        if ages:
+            print(f'Average patch age:          {sum(ages) / len(ages):.0f} days')
+            print(f'Oldest patch:               {max(ages)} days')
+            print(f'Patches older than 1 year:  {sum(a > 365 for a in ages)}')
+            print(f'Patches older than 2 years: {sum(a > 730 for a in ages)}')
+        counts = Counter(r['Upstream Status'] for r in rows)
+        groups = defaultdict(list)
+        for r in rows:
+            if isinstance(r['Patch Age (Days)'], int):
+                groups[r['Upstream Status']].append(r['Patch Age (Days)'])
+        print('\nUpstream Status (count, average age in days):')
+        for status in sorted(counts, key=str.lower):
+            ages_for_status = groups[status]
+            average = f'{sum(ages_for_status) / len(ages_for_status):.0f}' if ages_for_status else 'n/a'
+            print(f'  {status:<20} {counts[status]:>5}  {average:>6}')
+
+
+if __name__ == '__main__':
+    main()