Transaction in Own Shares

30 June 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 30 June 2025 it purchased through Merrill Lynch International the following number of its ordinary shares for Treasury at an average price of 826.4645 pence per share:

Number of ordinary shares purchased:

450,000

Highest purchase price paid per share:

835.2000p

Lowest purchase price paid per share:

822.6000p

Following the above transaction, the Company has 878,158,206 ordinary shares in issue and holds 4,944,958 ordinary shares in treasury. Therefore, the total number of voting rights in the Company is 873,213,248 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

448

829.6

08:10:18

XLON

406

829.8

08:12:19

XLON

434

829.2

08:13:15

XLON

755

830.6

08:18:43

XLON

1,103

830

08:18:43

XLON

1,408

829.6

08:20:04

XLON

604

829.4

08:26:20

XLON

598

830.6

08:30:58

XLON

676

830.8

08:39:40

XLON

1,545

831.4

08:45:05

XLON

550

831.6

08:47:40

XLON

963

833

09:00:29

XLON

2,257

832.4

09:17:45

XLON

3,570

832

09:17:48

XLON

1,074

831.2

09:21:27

XLON

1,177

831.2

09:21:27

XLON

2,226

832

09:44:18

XLON

1,082

831.6

09:44:27

XLON

1,163

831.6

09:44:27

XLON

949

831

09:45:31

XLON

1,356

831

09:45:31

XLON

2,212

831.8

10:18:44

XLON

2,257

831.4

10:18:47

XLON

723

831.2

10:18:49

XLON

1,592

831.2

10:18:49

XLON

625

832.2

10:36:16

XLON

2,323

831.8

10:46:50

XLON

528

831.4

10:47:15

XLON

1,115

831.4

10:47:15

XLON

2,318

831.2

10:47:15

XLON

592

831.4

10:54:56

XLON

1,649

830.6

10:54:56

XLON

2,237

831

10:54:56

XLON

2,323

830.4

10:55:33

XLON

762

830.2

10:56:41

XLON

1,235

830.2

10:56:41

XLON

2,205

829.8

11:02:53

XLON

777

833.6

11:44:03

XLON

752

834.4

11:48:44

XLON

2,299

835.2

12:00:00

XLON

1,796

834.6

12:00:20

XLON

2,563

834.6

12:00:20

XLON

599

834.6

12:13:02

XLON

858

834.6

12:14:47

XLON

1,023

834

12:15:17

XLON

2,303

834

12:15:17

XLON

879

832.6

12:21:21

XLON

472

832.2

12:25:40

XLON

72

831.6

12:25:48

XLON

529

831.6

12:25:48

XLON

296

831.2

12:33:22

XLON

455

830.8

12:45:34

XLON

324

830.6

12:45:36

XLON

656

830

12:54:34

XLON

385

830.6

13:00:44

XLON

74

830

13:01:07

XLON

204

830

13:01:07

XLON

894

830.2

13:01:07

XLON

19

829.6

13:04:25

XLON

66

829.6

13:04:25

XLON

1,429

829.6

13:04:25

XLON

331

829.6

13:16:11

XLON

650

829.6

13:16:11

XLON

683

829.6

13:32:02

XLON

254

830.4

14:07:07

XLON

405

830.4

14:07:07

XLON

1,109

830

14:17:19

XLON

1,114

830

14:17:19

XLON

183

831.4

14:30:19

XLON

346

831.4

14:30:19

XLON

969

832

14:37:55

XLON

1,917

831.4

14:42:39

XLON

949

831.2

14:43:52

XLON

2,240

830.8

14:46:15

XLON

2,263

830.6

14:46:16

XLON

2,175

830.2

14:47:53

XLON

1,393

830.4

14:50:45

XLON

336

830.4

14:54:48

XLON

388

830.4

14:54:48

XLON

1,126

831.6

14:59:57

XLON

786

831.4

15:01:29

XLON

100

830.6

15:06:16

XLON

104

830.6

15:06:16

XLON

271

830.6

15:06:16

XLON

476

831

15:06:16

XLON

717

831.2

15:06:16

XLON

1,612

831.6

15:06:16

XLON

11

831.4

15:06:21

XLON

161

831.4

15:06:21

XLON

282

831.4

15:06:21

XLON

556

831.6

15:06:34

XLON

3,193

831.6

15:06:34

XLON

3,623

831.6

15:06:34

XLON

494

831.2

15:07:01

XLON

835

831.2

15:07:01

XLON

700

830.8

15:07:28

XLON

1,600

830.8

15:07:28

XLON

2,293

831

15:07:28

XLON

2,910

830.8

15:22:14

XLON

45

830.8

15:22:16

XLON

17

830.8

15:22:57

XLON

295

830.8

15:23:11

XLON

317

830.8

15:23:11

XLON

603

830.8

15:23:11

XLON

271

830.4

15:25:47

XLON

405

830.4

15:25:47

XLON

501

830.4

15:25:47

XLON

719

830.4

15:25:47

XLON

6,755

830.8

15:25:47

XLON

819

830.2

15:26:02

XLON

2,271

830

15:26:27

XLON

657

829.8

15:27:00

XLON

345

829.6

15:27:02

XLON

1,989

829.6

15:27:02

XLON

915

829.2

15:27:03

XLON

1,312

829.2

15:27:03

XLON

72

829

15:31:27

XLON

1,704

829

15:31:27

XLON

38

829

15:32:03

XLON

508

829

15:32:03

XLON

752

829.2

15:33:12

XLON

1,910

829.2

15:33:21

XLON

368

829.2

15:33:30

XLON

670

829.2

15:33:30

XLON

97

828.8

15:34:47

XLON

72

828.8

15:35:05

XLON

182

828.8

15:35:15

XLON

1,087

828.8

15:35:22

XLON

113

828.2

15:35:27

XLON

1,064

828.2

15:35:27

XLON

1,086

828.2

15:35:27

XLON

72

828

15:35:46

XLON

635

828

15:35:46

XLON

1,593

828

15:35:46

XLON

524

827.8

15:36:28

XLON

1,685

827.8

15:36:28

XLON

1,593

827.4

15:36:32

XLON

2,285

827.6

15:36:32

XLON

227

827

15:37:10

XLON

2,051

827

15:37:10

XLON

2,221

826.4

15:38:19

XLON

158

826

15:38:27

XLON

286

826

15:38:27

XLON

1,943

826

15:38:27

XLON

72

825.6

15:40:21

XLON

251

825.6

15:40:21

XLON

17

825.6

15:45:03

XLON

129

825.6

15:45:03

XLON

277

825.6

15:45:03

XLON

57

825.6

15:48:14

XLON

698

825.6

15:48:14

XLON

899

825.8

15:55:08

XLON

507

825.4

15:55:49

XLON

776

825.4

15:55:49

XLON

1,726

825.2

15:55:49

XLON

1,042

824.8

15:56:18

XLON

66

824.4

15:56:19

XLON

72

824.4

15:56:25

XLON

865

824.4

15:56:31

XLON

142

824

15:58:30

XLON

726

824

15:58:30

XLON

369

823.4

16:01:05

XLON

781

823.6

16:01:05

XLON

523

823

16:01:20

XLON

594

823.2

16:01:20

XLON

507

823

16:06:50

XLON

3,588

824.2

16:08:03

XLON

199

824.2

16:08:54

XLON

260

824.2

16:08:54

XLON

270

824.2

16:08:54

XLON

476

824.2

16:08:54

XLON

506

824.2

16:08:54

XLON

506

824.2

16:08:54

XLON

170

824.2

16:09:01

XLON

251

824.2

16:09:01

XLON

270

824.2

16:09:01

XLON

271

824.2

16:09:01

XLON

506

824.2

16:09:01

XLON

506

824.2

16:09:01

XLON

549

824.2

16:09:01

XLON

239

824.2

16:09:04

XLON

270

824.2

16:09:04

XLON

506

824.2

16:09:04

XLON

635

824.2

16:09:04

XLON

436

823.8

16:09:40

XLON

161

823.4

16:10:44

XLON

199

823.4

16:10:44

XLON

271

823.4

16:10:44

XLON

506

823.4

16:10:44

XLON

4,536

823.6

16:10:44

XLON

540

823.2

16:10:47

XLON

72

823

16:10:56

XLON

251

823

16:10:56

XLON

1,888

823

16:11:35

XLON

308

822.8

16:12:14

XLON

2,279

822.6

16:12:17

XLON

373

823.2

16:18:06

XLON

781

823.2

16:18:06

XLON

953

823.6

16:19:14

XLON

1,622

823.6

16:20:54

XLON

1,022

823.4

16:22:40

XLON

758

823.4

16:26:24

XLON

163

823.4

16:27:11

XLON

175

823.6

16:27:45

XLON

199

823.6

16:27:45

XLON

270

823.6

16:27:45

XLON

506

823.6

16:27:45

XLON

174

823.6

16:27:48

XLON

506

823.6

16:27:48

XLON

173

823.6

16:27:53

XLON

174

823.6

16:27:53

XLON

270

823.6

16:27:53

XLON

415

823.6

16:27:53

XLON

506

823.6

16:27:53

XLON

506

823.6

16:27:53

XLON

913

823.4

16:27:55

XLON

412

823.4

16:28:01

XLON

1,113

823.2

16:28:20

XLON

140

823.4

16:29:12

XLON

51

823.2

16:29:30

XLON

280

823.2

16:29:30

XLON

1,372

823.2

16:29:30

XLON

1,384

823.2

16:29:30

XLON

7

823.2

16:29:56

XLON

163

824.4

16:35:19

XLON

247

824.4

16:35:19

XLON

328

824.4

16:35:19

XLON

416

824.4

16:35:19

XLON

457

824.4

16:35:19

XLON

936

824.4

16:35:19

XLON

1,016

824.4

16:35:19

XLON

1,375

824.4

16:35:19

XLON

1,388

824.4

16:35:19

XLON

1,793

824.4

16:35:19

XLON

1,928

824.4

16:35:19

XLON

1,948

824.4

16:35:19

XLON

2,036

824.4

16:35:19

XLON

2,123

824.4

16:35:19

XLON

2,189

824.4

16:35:19

XLON

2,314

824.4

16:35:19

XLON

2,316

824.4

16:35:19

XLON

3,471

824.4

16:35:19

XLON

3,729

824.4

16:35:19

XLON

4,476

824.4

16:35:19

XLON

5,078

824.4

16:35:19

XLON

6,926

824.4

16:35:19

XLON

6,950

824.4

16:35:19

XLON

7,702

824.4

16:35:19

XLON

8,945

824.4

16:35:19

XLON

10,127

824.4

16:35:19

XLON

10,603

824.4

16:35:19

XLON

11,376

824.4

16:35:19

XLON

12,411

824.4

16:35:19

XLON

13,322

824.4

16:35:19

XLON

13,509

824.4

16:35:19

XLON

14,078

824.4

16:35:19

XLON

16,645

824.4

16:35:19

XLON

78,389

824.4

16:35:19

XLON