Transaction in Own Shares

12 December 2025

Auto Trader Group plc ("Auto Trader" or the "Company")

Auto Trader Group plc Transaction in Own Shares

Auto Trader Group plc (the "Company") announces that on 12 December 2025 it purchased through Deutsche Bank AG, London Branch (trading for these purposes as Deutsche Numis) ("Deutsche Numis") the following number of its ordinary shares for Cancellation at an average price of 597.8009 pence per share:

Number of ordinary shares purchased:

550,154

Highest purchase price paid per share:

603.20p

Lowest purchase price paid per share:

594.00p

Following the above transaction, the Company has 854,262,568 ordinary shares in issue and holds 4,786,344 ordinary shares in treasury. Therefore, the total number of voting rights in the Company is 849,476,224 which may be used by shareholders as the denominator for the calculations by which they will determine if they are required to notify their interest in, or a change to their interest in, Auto Trader Group plc under the FCA's Disclosure Guidance and Transparency Rules.

In accordance with Article 5(1)(b) of Regulation (EU) No 596/2014 (the Market Abuse Regulation), the schedule below contains detailed information about the purchases made by Deutsche Numis on behalf of the Company as part of the buyback programme.

Enquiries:

Auto Trader Group plc

Claire Baty, Company Secretary

0345 111 0006

Schedule of Purchases - Individual Transactions

Number of ordinary shares purchased

Transaction price(GBp share)

Time of transaction (UK Time)

Trading venue

3281

596.40

 08:13:37

XLON

1918

596.80

 08:15:00

XLON

1808

596.80

 08:15:00

XLON

1830

596.20

 08:16:17

XLON

1763

595.20

 08:16:54

XLON

481

595.60

 08:22:51

XLON

1467

595.60

 08:22:53

XLON

739

595.20

 08:23:26

XLON

1920

596.00

 08:29:31

XLON

746

595.60

 08:29:31

XLON

1339

597.20

 08:33:16

XLON

300

597.20

 08:33:16

XLON

1114

597.20

 08:33:51

XLON

614

597.20

 08:33:51

XLON

2325

597.60

 08:42:41

XLON

1001

597.20

 08:43:05

XLON

743

597.20

 08:43:05

XLON

1709

597.40

 08:47:09

XLON

1587

597.00

 08:50:36

XLON

1823

596.80

 08:50:50

XLON

377

596.80

 08:56:27

XLON

705

596.80

 08:56:27

XLON

520

596.80

 08:56:27

XLON

1929

596.20

 08:59:34

XLON

1226

595.80

 09:01:29

XLON

413

595.80

 09:01:29

XLON

1056

597.60

 09:06:05

XLON

577

597.60

 09:06:05

XLON

160

597.60

 09:06:05

XLON

1612

596.60

 09:07:37

XLON

1609

595.60

 09:10:59

XLON

7

595.60

 09:10:59

XLON

1865

596.40

 09:16:02

XLON

1557

596.20

 09:16:35

XLON

1804

595.80

 09:18:37

XLON

1911

595.80

 09:25:04

XLON

1807

595.20

 09:26:21

XLON

540

595.00

 09:26:22

XLON

54

595.00

 09:26:55

XLON

1020

595.00

 09:26:55

XLON

1830

594.20

 09:29:28

XLON

313

594.20

 09:31:11

XLON

386

595.20

 09:35:40

XLON

1606

595.20

 09:35:52

XLON

1614

595.00

 09:36:28

XLON

1785

595.00

 09:39:01

XLON

1474

594.80

 09:40:48

XLON

279

594.80

 09:40:48

XLON

1601

594.60

 09:40:48

XLON

1474

595.00

 09:44:34

XLON

447

595.00

 09:44:34

XLON

1605

595.20

 09:45:55

XLON

1715

595.40

 09:49:29

XLON

1751

595.40

 09:50:35

XLON

1963

595.20

 09:52:58

XLON

1651

595.40

 09:56:08

XLON

41

595.40

 09:56:08

XLON

1400

595.40

 09:58:37

XLON

419

595.40

 09:58:37

XLON

1560

595.20

 10:00:03

XLON

1745

595.40

 10:01:50

XLON

1706

595.00

 10:05:51

XLON

115

595.00

 10:05:51

XLON

377

596.00

 10:06:14

XLON

225

596.00

 10:06:14

XLON

225

596.20

 10:06:21

XLON

1160

596.80

 10:07:41

XLON

261

596.80

 10:07:41

XLON

2264

596.80

 10:07:43

XLON

1535

596.80

 10:07:43

XLON

1110

597.20

 10:07:56

XLON

1727

597.20

 10:07:56

XLON

1701

597.20

 10:09:31

XLON

1849

597.20

 10:09:31

XLON

1069

597.00

 10:09:58

XLON

514

597.00

 10:09:58

XLON

1565

597.20

 10:11:18

XLON

1005

597.00

 10:12:45

XLON

667

597.00

 10:12:45

XLON

1993

596.60

 10:12:46

XLON

1744

596.20

 10:13:21

XLON

1243

596.00

 10:14:48

XLON

441

596.00

 10:14:48

XLON

23

595.60

 10:16:10

XLON

1474

595.60

 10:16:35

XLON

189

595.60

 10:16:35

XLON

1131

595.60

 10:17:02

XLON

596

595.60

 10:17:21

XLON

671

595.40

 10:17:48

XLON

563

595.40

 10:17:49

XLON

326

595.40

 10:17:49

XLON

240

595.40

 10:17:57

XLON

689

595.40

 10:17:57

XLON

882

595.40

 10:18:25

XLON

1364

595.20

 10:18:47

XLON

288

595.20

 10:18:47

XLON

1749

595.20

 10:21:15

XLON

1217

595.60

 10:22:34

XLON

703

595.60

 10:22:34

XLON

1904

595.40

 10:24:31

XLON

1287

595.20

 10:25:32

XLON

559

595.20

 10:25:32

XLON

1035

594.60

 10:29:23

XLON

728

594.60

 10:29:23

XLON

1245

594.80

 10:30:46

XLON

389

594.80

 10:30:46

XLON

1741

594.60

 10:31:00

XLON

1678

594.40

 10:32:35

XLON

1100

594.00

 10:33:38

XLON

100

594.00

 10:33:38

XLON

1778

594.00

 10:33:38

XLON

1307

594.00

 10:33:38

XLON

974

594.00

 10:33:38

XLON

503

594.00

 10:33:38

XLON

782

594.00

 10:33:38

XLON

481

594.00

 10:33:38

XLON

1241

594.00

 10:33:38

XLON

362

594.00

 10:33:38

XLON

2549

594.80

 10:37:07

XLON

487

595.00

 10:40:13

XLON

1649

595.00

 10:40:13

XLON

1362

595.00

 10:40:35

XLON

1682

595.00

 10:40:35

XLON

1852

594.80

 10:43:39

XLON

1853

595.00

 10:45:24

XLON

1086

594.80

 10:47:14

XLON

673

594.80

 10:47:14

XLON

620

594.80

 10:48:43

XLON

1135

594.80

 10:48:43

XLON

1390

594.60

 10:51:41

XLON

1697

594.80

 10:54:22

XLON

1557

595.00

 11:00:16

XLON

129

595.00

 11:00:36

XLON

1409

595.00

 11:00:36

XLON

353

595.00

 11:00:36

XLON

1201

594.80

 11:00:37

XLON

1687

594.80

 11:04:08

XLON

626

594.60

 11:07:45

XLON

1103

594.60

 11:09:30

XLON

1710

594.40

 11:12:36

XLON

1679

595.00

 11:17:23

XLON

1613

595.20

 11:21:48

XLON

1864

595.20

 11:23:48

XLON

995

595.20

 11:25:06

XLON

727

595.20

 11:25:06

XLON

2096

595.00

 11:27:38

XLON

1754

595.00

 11:27:38

XLON

1838

595.00

 11:29:45

XLON

283

595.00

 11:29:45

XLON

1416

595.00

 11:29:45

XLON

936

595.00

 11:33:16

XLON

500

595.00

 11:33:17

XLON

220

595.00

 11:33:26

XLON

1118

595.00

 11:36:43

XLON

667

595.00

 11:36:43

XLON

1337

594.80

 11:36:47

XLON

485

594.80

 11:36:47

XLON

634

594.60

 11:41:20

XLON

2460

595.20

 11:45:53

XLON

2808

595.00

 11:48:01

XLON

1512

594.80

 11:48:58

XLON

212

594.80

 11:48:58

XLON

1344

594.60

 11:50:40

XLON

551

594.60

 11:50:40

XLON

902

594.40

 11:54:28

XLON

920

594.40

 11:54:28

XLON

1819

594.60

 11:59:41

XLON

1091

594.20

 12:02:01

XLON

462

594.20

 12:02:01

XLON

1834

594.00

 12:04:44

XLON

1305

594.00

 12:04:44

XLON

337

594.00

 12:05:04

XLON

1350

594.00

 12:05:04

XLON

1429

594.00

 12:05:04

XLON

1312

594.00

 12:05:04

XLON

556

594.00

 12:05:04

XLON

1415

594.00

 12:05:04

XLON

1803

594.00

 12:05:04

XLON

101

594.00

 12:05:04

XLON

1173

594.00

 12:05:04

XLON

1442

594.00

 12:05:04

XLON

1251

594.00

 12:05:04

XLON

1364

594.00

 12:05:04

XLON

1321

594.00

 12:05:04

XLON

1294

594.00

 12:05:04

XLON

1333

594.00

 12:05:04

XLON

17

594.00

 12:05:04

XLON

1363

594.00

 12:05:04

XLON

1252

594.00

 12:05:04

XLON

1318

594.00

 12:05:04

XLON

995

594.00

 12:05:04

XLON

1383

594.00

 12:05:04

XLON

406

594.00

 12:05:04

XLON

758

594.00

 12:05:04

XLON

473

594.00

 12:05:04

XLON

1000

594.00

 12:05:04

XLON

1425

594.00

 12:05:04

XLON

48

594.00

 12:05:04

XLON

3323

594.00

 12:05:04

XLON

689

594.00

 12:05:04

XLON

616

594.00

 12:05:04

XLON

1829

594.00

 12:05:04

XLON

1403

594.00

 12:05:04

XLON

4624

594.00

 12:05:04

XLON

1236

594.00

 12:05:04

XLON

2346

594.00

 12:05:04

XLON

695

594.00

 12:05:04

XLON

376

594.00

 12:05:05

XLON

164

594.40

 12:05:26

XLON

617

594.40

 12:05:26

XLON

1501

594.20

 12:06:04

XLON

1825

594.20

 12:06:04

XLON

80

594.20

 12:06:04

XLON

109

594.20

 12:07:47

XLON

912

595.00

 12:09:36

XLON

1634

595.20

 12:10:08

XLON

980

595.00

 12:10:08

XLON

1530

595.00

 12:10:08

XLON

577

594.80

 12:13:35

XLON

982

594.80

 12:13:35

XLON

271

595.00

 12:17:17

XLON

1081

595.00

 12:17:39

XLON

560

595.00

 12:17:39

XLON

220

595.00

 12:17:39

XLON

865

595.00

 12:17:39

XLON

982

595.00

 12:17:39

XLON

69

595.00

 12:17:39

XLON

406

594.80

 12:17:41

XLON

1287

594.80

 12:17:41

XLON

1854

594.60

 12:25:35

XLON

1864

594.60

 12:27:33

XLON

1846

594.40

 12:27:59

XLON

1684

594.00

 12:32:23

XLON

175

594.00

 12:32:23

XLON

1907

594.60

 12:34:10

XLON

1729

594.80

 12:42:32

XLON

1353

595.40

 12:49:06

XLON

1284

595.40

 12:49:41

XLON

1147

595.40

 12:49:41

XLON

576

595.40

 12:49:41

XLON

1855

595.20

 12:50:19

XLON

1485

595.20

 12:52:28

XLON

98

595.20

 12:52:28

XLON

798

595.20

 12:53:36

XLON

791

595.20

 12:53:36

XLON

1904

595.40

 12:58:35

XLON

1685

595.20

 13:02:02

XLON

156

595.20

 13:02:41

XLON

617

595.20

 13:02:41

XLON

1181

595.20

 13:02:41

XLON

1562

594.80

 13:06:10

XLON

901

595.40

 13:15:08

XLON

996

595.40

 13:15:08

XLON

285

595.80

 13:17:38

XLON

1054

595.80

 13:17:38

XLON

270

595.80

 13:17:38

XLON

2925

595.60

 13:18:44

XLON

1767

595.60

 13:20:03

XLON

1647

595.60

 13:21:14

XLON

1554

595.60

 13:22:40

XLON

163

595.60

 13:22:40

XLON

1904

595.20

 13:24:47

XLON

1617

595.20

 13:29:07

XLON

1759

595.80

 13:32:50

XLON

1571

596.20

 13:33:18

XLON

1578

596.20

 13:33:18

XLON

1659

597.60

 13:34:37

XLON

1609

597.40

 13:35:35

XLON

122

597.40

 13:35:35

XLON

1564

597.40

 13:35:35

XLON

257

597.60

 13:35:35

XLON

377

597.60

 13:35:35

XLON

1100

597.60

 13:35:35

XLON

1848

597.20

 13:36:50

XLON

1142

597.20

 13:37:16

XLON

81

597.20

 13:37:17

XLON

468

597.20

 13:37:18

XLON

1043

597.60

 13:41:40

XLON

551

597.60

 13:41:40

XLON

1219

597.60

 13:43:19

XLON

473

597.60

 13:43:19

XLON

1448

597.00

 13:45:13

XLON

115

597.00

 13:45:13

XLON

1676

598.00

 13:48:38

XLON

203

598.00

 13:52:19

XLON

1815

598.00

 13:52:19

XLON

1184

598.00

 13:54:58

XLON

524

598.00

 13:54:58

XLON

1028

598.00

 13:57:58

XLON

735

598.00

 13:57:58

XLON

3088

600.20

 14:01:50

XLON

570

600.00

 14:02:57

XLON

1731

600.00

 14:02:57

XLON

79

600.00

 14:02:57

XLON

1570

600.00

 14:02:57

XLON

2057

599.80

 14:03:16

XLON

1651

599.60

 14:05:32

XLON

1718

599.60

 14:07:18

XLON

1057

599.40

 14:08:14

XLON

764

599.40

 14:08:14

XLON

1656

599.20

 14:10:31

XLON

120

599.20

 14:10:31

XLON

2172

599.60

 14:16:33

XLON

176

599.60

 14:17:36

XLON

1436

599.60

 14:17:36

XLON

1891

599.60

 14:21:08

XLON

1620

599.40

 14:21:53

XLON

1191

599.00

 14:22:15

XLON

383

599.00

 14:22:15

XLON

1769

599.80

 14:29:07

XLON

62

599.80

 14:29:07

XLON

1327

600.00

 14:29:55

XLON

316

600.00

 14:29:55

XLON

2090

599.80

 14:30:18

XLON

1839

599.40

 14:30:18

XLON

84

599.40

 14:30:18

XLON

2924

600.20

 14:33:54

XLON

2064

600.60

 14:38:54

XLON

1717

600.80

 14:39:56

XLON

2206

600.60

 14:39:56

XLON

915

600.40

 14:41:03

XLON

1224

600.40

 14:41:03

XLON

2

600.40

 14:41:51

XLON

1613

600.40

 14:41:51

XLON

217

600.40

 14:44:25

XLON

1701

600.40

 14:44:25

XLON

2675

601.00

 14:48:15

XLON

1724

601.00

 14:48:15

XLON

190

602.00

 14:52:26

XLON

1055

602.00

 14:52:26

XLON

1055

602.00

 14:52:26

XLON

183

602.00

 14:52:26

XLON

3463

601.80

 14:52:47

XLON

365

601.80

 14:52:47

XLON

968

602.00

 14:56:37

XLON

942

602.00

 14:56:37

XLON

920

602.00

 14:56:37

XLON

1187

602.00

 14:58:22

XLON

1194

602.00

 14:58:22

XLON

2327

602.00

 14:59:45

XLON

203

602.00

 14:59:45

XLON

1413

602.00

 14:59:45

XLON

1595

602.00

 15:00:31

XLON

764

602.00

 15:01:55

XLON

890

602.00

 15:01:55

XLON

455

602.00

 15:02:20

XLON

1232

602.00

 15:02:20

XLON

1671

602.40

 15:04:09

XLON

1508

602.40

 15:06:09

XLON

475

602.40

 15:06:09

XLON

1277

602.40

 15:06:31

XLON

580

602.40

 15:06:31

XLON

293

602.40

 15:06:31

XLON

1560

602.20

 15:07:00

XLON

245

602.40

 15:08:34

XLON

247

602.40

 15:08:34

XLON

1782

602.40

 15:08:34

XLON

2430

602.40

 15:10:09

XLON

1268

602.20

 15:11:10

XLON

588

602.20

 15:11:10

XLON

1864

602.20

 15:13:51

XLON

1036

602.20

 15:13:51

XLON

850

602.20

 15:13:51

XLON

2748

602.60

 15:16:53

XLON

1869

602.60

 15:16:53

XLON

303

602.60

 15:16:53

XLON

1523

602.60

 15:16:53

XLON

2009

602.40

 15:18:11

XLON

3476

602.80

 15:20:06

XLON

2337

602.60

 15:20:17

XLON

1585

602.40

 15:20:29

XLON

1108

602.40

 15:22:18

XLON

606

602.40

 15:22:18

XLON

1566

602.20

 15:24:16

XLON

1315

602.40

 15:28:46

XLON

876

602.40

 15:28:46

XLON

2213

602.20

 15:28:47

XLON

47

602.20

 15:28:49

XLON

1135

602.20

 15:28:49

XLON

663

602.20

 15:28:53

XLON

1881

602.40

 15:30:04

XLON

1672

602.20

 15:33:49

XLON

1790

602.20

 15:33:49

XLON

1320

603.20

 15:39:27

XLON

377

603.20

 15:39:27

XLON

295

603.20

 15:39:27

XLON

547

603.20

 15:39:27

XLON

1741

603.00

 15:39:27

XLON

1320

603.00

 15:39:27

XLON

551

603.00

 15:39:27

XLON

721

603.20

 15:39:27

XLON

1840

602.80

 15:39:39

XLON

1365

602.60

 15:41:57

XLON

259

602.60

 15:41:57

XLON

445

602.20

 15:43:08

XLON

1434

602.20

 15:43:08

XLON

1998

602.20

 15:45:20

XLON

1609

602.20

 15:46:12

XLON

1

602.40

 15:48:40

XLON

1393

602.40

 15:48:40

XLON

1277

602.40

 15:48:40

XLON

1498

602.60

 15:49:26

XLON

709

602.60

 15:49:26

XLON

75

602.60

 15:49:26

XLON

2505

602.20

 15:49:34

XLON

1894

602.00

 15:49:34

XLON

1836

602.00

 15:50:52

XLON

1873

602.40

 15:53:05

XLON

1726

602.40

 15:54:08

XLON

1869

602.80

 15:54:51

XLON

1875

602.40

 15:55:29

XLON

1617

602.20

 15:55:29

XLON

1731

601.60

 15:58:02

XLON

1135

601.60

 15:58:02

XLON

1025

601.60

 15:58:03

XLON

1528

601.60

 15:58:03

XLON

962

602.20

 16:00:10

XLON

1526

602.20

 16:00:10

XLON

273

602.40

 16:00:10

XLON

1651

602.40

 16:00:10

XLON

420

602.40

 16:00:10

XLON

201

602.40

 16:00:10

XLON

2141

602.40

 16:00:10

XLON

883

602.00

 16:02:44

XLON

982

602.00

 16:02:44

XLON

2180

601.80

 16:04:01

XLON

196

601.60

 16:04:01

XLON

136

601.60

 16:04:01

XLON

17

601.60

 16:04:01

XLON

1906

601.60

 16:04:02

XLON

1570

601.40

 16:04:46

XLON

1846

600.80

 16:05:24

XLON

1771

600.80

 16:08:17

XLON

2229

600.80

 16:08:17

XLON

1460

600.60

 16:08:50

XLON

409

600.60

 16:08:50

XLON

1718

600.40

 16:08:51

XLON

1928

600.60

 16:10:48

XLON

1616

600.60

 16:10:48

XLON

1609

600.80

 16:12:26

XLON

1651

601.00

 16:13:26

XLON

193

601.00

 16:13:26

XLON

1954

600.80

 16:14:38

XLON

2033

600.80

 16:14:38

XLON

350

600.80

 16:14:38

XLON

1510

601.00

 16:15:26

XLON

418

601.00

 16:15:26

XLON

1651

601.00

 16:16:26

XLON

64

601.00

 16:16:26

XLON

498

601.00

 16:16:26

XLON

1679

600.80

 16:16:38

XLON

307

600.80

 16:16:38

XLON

782

600.80

 16:17:35

XLON

842

600.80

 16:17:35

XLON

1885

600.60

 16:17:41

XLON

1801

600.20

 16:19:03

XLON

178

600.60

 16:20:38

XLON

38

600.60

 16:20:38

XLON

1651

600.60

 16:20:38

XLON

420

600.60

 16:20:38

XLON

1651

600.60

 16:20:38

XLON

220

600.60

 16:20:38

XLON

1823

600.40

 16:20:56

XLON

1158

600.60

 16:22:18

XLON

660

600.60

 16:22:18

XLON

1677

600.60

 16:23:22

XLON

1396

600.60

 16:23:22

XLON

1279

600.60

 16:23:22

XLON

286

600.60

 16:23:22

XLON

35

600.60

 16:23:22

XLON

455

600.60

 16:23:25

XLON