Transaction in Own Shares

9 October 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 9 October 2025 it purchased through Merrill Lynch International the following number of its ordinary shares for Cancellation at an average price of 776.0516 pence per share:

Number of ordinary shares purchased:

372,900

Highest purchase price paid per share:

779.2000p

Lowest purchase price paid per share:

772.0000p

Following the above transaction, the Company has 871,279,688 ordinary shares in issue and holds 5,216,802 ordinary shares in treasury. Therefore, the total number of voting rights in the Company is 866,062,886 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 Merrill Lynch International 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 shares purchased

Transaction price (per share)

Time of transaction

Execution venue

376

776.8

08:10:09

XLON

294

776.8

08:21:59

XLON

432

776.6

08:26:59

XLON

549

776.4

08:26:59

XLON

947

776.2

08:26:59

XLON

743

777.0

08:30:24

XLON

503

776.8

08:40:02

XLON

350

776.6

08:43:51

XLON

667

776.2

08:43:52

XLON

815

775.2

08:44:20

XLON

435

776.0

08:48:16

XLON

710

775.8

08:48:16

XLON

606

775.6

08:48:18

XLON

444

775.0

08:48:21

XLON

517

774.8

08:48:21

XLON

369

774.6

08:48:23

XLON

376

774.4

08:48:37

XLON

404

774.2

08:48:37

XLON

478

773.2

08:49:26

XLON

396

773.0

08:50:37

XLON

301

775.6

09:00:31

XLON

361

775.4

09:00:35

XLON

605

775.2

09:01:05

XLON

418

774.6

09:01:22

XLON

447

774.2

09:01:45

XLON

520

774.0

09:10:14

XLON

806

775.8

09:20:45

XLON

457

775.6

09:20:47

XLON

70

776.0

09:33:01

XLON

225

776.0

09:33:01

XLON

518

775.8

09:33:05

XLON

782

776.0

10:33:04

XLON

1

775.6

10:34:22

XLON

655

775.6

10:37:05

XLON

1,466

775.4

10:37:05

XLON

865

775.2

10:39:15

XLON

3

774.8

10:44:25

XLON

8

775.0

10:44:25

XLON

558

775.0

10:44:25

XLON

110

774.8

10:53:34

XLON

457

774.8

10:53:34

XLON

16

774.2

10:54:00

XLON

407

774.4

10:54:00

XLON

462

774.2

10:54:00

XLON

179

774.0

10:54:01

XLON

297

774.0

10:54:01

XLON

476

773.8

10:56:27

XLON

630

773.6

10:56:27

XLON

38

774.2

11:18:47

XLON

522

774.4

11:18:47

XLON

543

774.2

11:18:47

XLON

36

774.2

11:20:13

XLON

392

774.2

11:20:13

XLON

396

774.0

11:21:37

XLON

522

774.0

11:31:01

XLON

118

773.8

11:32:22

XLON

1,172

773.8

11:32:22

XLON

110

773.6

11:32:23

XLON

370

773.6

11:32:23

XLON

418

773.2

11:39:38

XLON

7

776.0

12:13:56

XLON

1,100

776.0

12:13:56

XLON

2,136

775.8

12:13:56

XLON

648

775.4

12:14:58

XLON

31

775.2

12:15:00

XLON

1,654

775.2

12:15:00

XLON

1,122

776.4

12:55:29

XLON

1,951

777.2

13:07:38

XLON

440

776.8

13:08:59

XLON

604

776.8

13:08:59

XLON

402

779.0

13:23:59

XLON

10

778.8

13:27:59

XLON

1,021

778.8

13:28:24

XLON

1

778.4

13:30:52

XLON

1,240

778.4

13:31:14

XLON

159

778.2

13:37:39

XLON

753

778.2

13:37:39

XLON

77

778.0

13:39:02

XLON

350

778.0

13:39:02

XLON

496

777.8

13:39:46

XLON

309

777.4

13:41:18

XLON

312

777.4

13:41:18

XLON

511

777.2

13:48:43

XLON

44

777.0

13:48:47

XLON

285

777.0

13:48:47

XLON

491

776.6

13:49:40

XLON

295

776.4

13:50:35

XLON

613

777.8

13:55:23

XLON

674

777.6

13:55:23

XLON

361

777.4

14:01:18

XLON

666

777.0

14:03:24

XLON

364

777.8

14:09:40

XLON

474

777.6

14:13:58

XLON

514

777.4

14:14:23

XLON

562

777.8

14:31:01

XLON

1,320

777.6

14:31:01

XLON

55

777.6

14:31:05

XLON

790

777.4

14:31:57

XLON

682

777.6

14:35:50

XLON

813

777.4

14:35:55

XLON

672

777.0

14:38:56

XLON

73

776.8

14:39:24

XLON

453

776.8

14:39:24

XLON

445

776.4

14:41:49

XLON

413

776.2

14:43:22

XLON

342

775.8

14:43:52

XLON

355

775.6

14:44:16

XLON

323

775.2

14:44:47

XLON

450

775.0

14:46:25

XLON

289

774.8

14:46:28

XLON

468

774.6

14:46:28

XLON

714

774.2

14:47:39

XLON

462

773.6

14:51:12

XLON

434

773.4

14:51:55

XLON

437

773.0

14:54:06

XLON

195

772.8

14:54:16

XLON

321

772.8

14:54:16

XLON

602

772.0

14:58:00

XLON

780

772.8

15:06:01

XLON

300

774.0

15:12:21

XLON

1,498

774.4

15:14:03

XLON

3,433

773.8

15:15:45

XLON

614

773.4

15:17:07

XLON

745

773.2

15:17:31

XLON

636

773.2

15:18:04

XLON

3,313

773.0

15:18:04

XLON

127

773.6

15:19:49

XLON

427

773.6

15:19:49

XLON

127

773.4

15:19:57

XLON

127

773.4

15:19:57

XLON

177

773.4

15:19:57

XLON

196

773.4

15:19:57

XLON

197

773.4

15:19:57

XLON

427

773.4

15:19:57

XLON

427

773.4

15:19:57

XLON

427

773.4

15:19:57

XLON

100

773.4

15:20:02

XLON

102

773.4

15:20:02

XLON

125

773.4

15:20:02

XLON

135

773.4

15:20:02

XLON

135

773.4

15:20:02

XLON

181

773.4

15:20:02

XLON

250

773.4

15:20:02

XLON

250

773.4

15:20:02

XLON

427

773.4

15:20:02

XLON

427

773.4

15:20:02

XLON

427

773.4

15:20:02

XLON

427

773.4

15:20:02

XLON

427

773.4

15:20:02

XLON

427

773.4

15:20:02

XLON

143

773.8

15:20:23

XLON

427

773.8

15:20:23

XLON

427

773.8

15:20:23

XLON

2,852

773.2

15:20:35

XLON

3,151

773.0

15:21:00

XLON

974

774.6

15:21:15

XLON

4,005

774.4

15:22:35

XLON

64

774.2

15:22:43

XLON

1,461

774.2

15:22:43

XLON

1,067

774.8

15:25:41

XLON

993

774.6

15:25:53

XLON

1,032

775.0

15:26:28

XLON

1,114

774.8

15:26:30

XLON

1,325

776.0

15:33:20

XLON

660

775.8

15:33:29

XLON

893

775.6

15:33:42

XLON

1,512

775.4

15:33:42

XLON

571

775.2

15:33:57

XLON

878

776.4

15:36:28

XLON

507

777.0

15:38:50

XLON

912

777.0

15:38:50

XLON

972

776.8

15:40:41

XLON

865

776.2

15:41:43

XLON

92

776.2

15:44:10

XLON

176

776.2

15:44:10

XLON

196

776.2

15:44:10

XLON

232

776.2

15:44:10

XLON

285

776.2

15:44:10

XLON

622

776.2

15:44:10

XLON

650

776.2

15:44:10

XLON

3,443

776.2

15:44:10

XLON

1,168

776.6

15:45:16

XLON

858

776.0

15:46:47

XLON

3,611

776.0

15:46:47

XLON

942

775.6

15:47:39

XLON

2,593

776.2

15:48:38

XLON

191

776.2

15:48:45

XLON

1,280

777.4

15:51:53

XLON

2,182

777.6

15:51:53

XLON

594

777.4

15:51:55

XLON

1,451

777.2

15:51:58

XLON

2,218

777.0

15:52:01

XLON

336

777.2

15:52:05

XLON

1,441

777.2

15:52:13

XLON

1,320

777.0

15:52:15

XLON

46

777.0

15:52:18

XLON

781

777.0

15:52:18

XLON

421

777.0

15:52:21

XLON

927

776.8

15:53:01

XLON

2,601

776.6

15:53:01

XLON

1,692

776.2

15:53:56

XLON

321

778.4

15:58:42

XLON

1,277

778.2

15:58:42

XLON

367

778.6

16:01:10

XLON

1,164

778.4

16:05:13

XLON

1,546

778.2

16:05:45

XLON

690

778.4

16:09:21

XLON

1,318

778.0

16:09:21

XLON

2,234

778.0

16:12:33

XLON

1,269

777.8

16:12:37

XLON

1

777.6

16:13:04

XLON

1,592

777.6

16:13:21

XLON

1,618

777.4

16:14:03

XLON

644

777.2

16:14:05

XLON

564

777.6

16:15:10

XLON

1,250

777.4

16:15:10

XLON

56

777.4

16:17:24

XLON

646

777.4

16:17:24

XLON

1,780

777.6

16:17:24

XLON

661

777.4

16:17:28

XLON

2,206

777.6

16:17:50

XLON

1,306

777.4

16:23:13

XLON

1

777.8

16:24:23

XLON

622

778.2

16:24:27

XLON

750

778.2

16:24:27

XLON

383

778.2

16:24:36

XLON

400

778.2

16:24:36

XLON

810

778.2

16:24:36

XLON

976

778.2

16:24:36

XLON

4

778.2

16:25:44

XLON

282

779.2

16:27:12

XLON

976

779.2

16:27:12

XLON

1,053

779.2

16:27:12

XLON

1,147

779.0

16:27:12

XLON

1,589

779.0

16:27:13

XLON

463

779.0

16:27:16

XLON

50

779.0

16:27:34

XLON

147

779.0

16:27:34

XLON

182

779.0

16:27:34

XLON

182

779.0

16:27:34

XLON

184

779.0

16:27:34

XLON

184

779.0

16:27:34

XLON

381

779.0

16:27:34

XLON

480

779.0

16:27:34

XLON

520

779.0

16:27:34

XLON

591

779.0

16:27:34

XLON

650

779.0

16:27:34

XLON

702

779.0

16:27:34

XLON

1

779.0

16:27:55

XLON

175

779.0

16:27:55

XLON

300

779.0

16:27:55

XLON

400

779.0

16:27:55

XLON

976

779.0

16:27:55

XLON

305

779.0

16:28:09

XLON

823

779.0

16:28:09

XLON

9

776.0

16:35:04

XLON

36

776.0

16:35:04

XLON

463

776.0

16:35:04

XLON

523

776.0

16:35:04

XLON

664

776.0

16:35:04

XLON

1,095

776.0

16:35:04

XLON

1,244

776.0

16:35:04

XLON

1,439

776.0

16:35:04

XLON

3,347

776.0

16:35:04

XLON

4,848

776.0

16:35:04

XLON

6,249

776.0

16:35:04

XLON

9,598

776.0

16:35:04

XLON

10,122

776.0

16:35:04

XLON

20,000

776.0

16:35:04

XLON

25,590

776.0

16:35:04

XLON

37,377

776.0

16:35:04

XLON

75,192

776.0

16:35:04

XLON