EX-99.1(A) 3 tmb-20240627xex99d1a.htm EX-99.1(A)

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Issuer

Date

Time CEST

Price (DKK)

Quantity

Venue

Genmab A/S

24/06/2024

9:07:21 AM

1,804.0000

70

XCSE

Genmab A/S

24/06/2024

9:07:21 AM

1,804.0000

33

XCSE

Genmab A/S

24/06/2024

9:07:21 AM

1,804.0000

33

XCSE

Genmab A/S

24/06/2024

9:07:21 AM

1,804.0000

70

XCSE

Genmab A/S

24/06/2024

9:07:21 AM

1,804.0000

33

XCSE

Genmab A/S

24/06/2024

9:07:21 AM

1,804.0000

70

XCSE

Genmab A/S

24/06/2024

9:07:21 AM

1,804.0000

42

XCSE

Genmab A/S

24/06/2024

9:09:56 AM

1,803.5000

5

AQEU

Genmab A/S

24/06/2024

9:09:56 AM

1,803.5000

5

AQEU

Genmab A/S

24/06/2024

9:09:56 AM

1,803.5000

32

AQEU

Genmab A/S

24/06/2024

9:09:56 AM

1,803.5000

2

AQEU

Genmab A/S

24/06/2024

9:09:56 AM

1,803.5000

5

TQEX

Genmab A/S

24/06/2024

9:09:56 AM

1,803.5000

5

TQEX

Genmab A/S

24/06/2024

9:09:56 AM

1,803.5000

5

TQEX

Genmab A/S

24/06/2024

9:09:56 AM

1,803.5000

5

TQEX

Genmab A/S

24/06/2024

9:09:56 AM

1,803.5000

5

TQEX

Genmab A/S

24/06/2024

9:09:56 AM

1,803.5000

5

TQEX

Genmab A/S

24/06/2024

9:09:56 AM

1,803.5000

5

TQEX

Genmab A/S

24/06/2024

9:09:56 AM

1,803.5000

5

TQEX

Genmab A/S

24/06/2024

9:09:56 AM

1,803.5000

5

TQEX

Genmab A/S

24/06/2024

9:09:56 AM

1,803.5000

31

XCSE

Genmab A/S

24/06/2024

9:09:56 AM

1,803.5000

31

XCSE

Genmab A/S

24/06/2024

9:09:56 AM

1,803.5000

31

XCSE

Genmab A/S

24/06/2024

9:09:56 AM

1,803.5000

28

XCSE

Genmab A/S

24/06/2024

9:09:56 AM

1,803.5000

31

XCSE

Genmab A/S

24/06/2024

9:09:56 AM

1,803.5000

31

XCSE

Genmab A/S

24/06/2024

9:09:56 AM

1,803.5000

31

XCSE

Genmab A/S

24/06/2024

9:09:56 AM

1,803.5000

1

TQEX

Genmab A/S

24/06/2024

9:09:56 AM

1,803.5000

10

XCSE

Genmab A/S

24/06/2024

9:09:56 AM

1,803.5000

9

XCSE

Genmab A/S

24/06/2024

9:10:28 AM

1,802.0000

22

XCSE

Genmab A/S

24/06/2024

9:10:28 AM

1,802.0000

96

XCSE

Genmab A/S

24/06/2024

9:10:28 AM

1,802.0000

21

CEUX

Genmab A/S

24/06/2024

9:10:28 AM

1,802.0000

21

CEUX

Genmab A/S

24/06/2024

9:10:28 AM

1,802.0000

2

CEUX

Genmab A/S

24/06/2024

9:10:28 AM

1,802.0000

3

AQEU

Genmab A/S

24/06/2024

9:10:28 AM

1,802.0000

41

AQEU

Genmab A/S

24/06/2024

9:10:28 AM

1,802.0000

5

TQEX

Genmab A/S

24/06/2024

9:13:29 AM

1,800.0000

9

XCSE

Genmab A/S

24/06/2024

9:13:29 AM

1,800.0000

9

XCSE

Genmab A/S

24/06/2024

9:13:29 AM

1,800.0000

61

XCSE

Genmab A/S

24/06/2024

9:13:29 AM

1,800.0000

13

XCSE

Genmab A/S

24/06/2024

9:13:29 AM

1,800.0000

5

TQEX

Genmab A/S

24/06/2024

9:13:29 AM

1,800.0000

10

CEUX

Genmab A/S

24/06/2024

9:13:29 AM

1,800.0000

2

TQEX

Genmab A/S

24/06/2024

9:13:29 AM

1,800.0000

17

XCSE

1

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

9:14:08 AM

1,798.5000

55

CEUX

Genmab A/S

24/06/2024

9:14:08 AM

1,798.5000

8

AQEU

Genmab A/S

24/06/2024

9:14:08 AM

1,798.5000

9

TQEX

Genmab A/S

24/06/2024

9:14:08 AM

1,798.5000

36

XCSE

Genmab A/S

24/06/2024

9:14:08 AM

1,798.5000

25

XCSE

Genmab A/S

24/06/2024

9:15:53 AM

1,802.0000

13

CEUX

Genmab A/S

24/06/2024

9:15:53 AM

1,802.0000

4

CEUX

Genmab A/S

24/06/2024

9:15:53 AM

1,802.0000

4

CEUX

Genmab A/S

24/06/2024

9:15:53 AM

1,802.0000

13

CEUX

Genmab A/S

24/06/2024

9:15:53 AM

1,802.0000

17

XCSE

Genmab A/S

24/06/2024

9:16:12 AM

1,802.0000

5

XCSE

Genmab A/S

24/06/2024

9:16:12 AM

1,802.0000

9

XCSE

Genmab A/S

24/06/2024

9:16:12 AM

1,802.0000

14

XCSE

Genmab A/S

24/06/2024

9:16:12 AM

1,802.0000

13

CEUX

Genmab A/S

24/06/2024

9:16:12 AM

1,802.0000

13

CEUX

Genmab A/S

24/06/2024

9:16:12 AM

1,802.0000

13

CEUX

Genmab A/S

24/06/2024

9:16:12 AM

1,802.0000

13

CEUX

Genmab A/S

24/06/2024

9:16:12 AM

1,802.0000

13

CEUX

Genmab A/S

24/06/2024

9:16:12 AM

1,802.0000

13

CEUX

Genmab A/S

24/06/2024

9:16:12 AM

1,802.0000

14

XCSE

Genmab A/S

24/06/2024

9:16:12 AM

1,802.0000

14

XCSE

Genmab A/S

24/06/2024

9:16:12 AM

1,802.0000

14

XCSE

Genmab A/S

24/06/2024

9:16:12 AM

1,802.0000

13

CEUX

Genmab A/S

24/06/2024

9:16:12 AM

1,802.0000

13

CEUX

Genmab A/S

24/06/2024

9:17:13 AM

1,801.0000

22

XCSE

Genmab A/S

24/06/2024

9:17:13 AM

1,801.0000

56

XCSE

Genmab A/S

24/06/2024

9:17:13 AM

1,801.0000

70

CEUX

Genmab A/S

24/06/2024

9:20:00 AM

1,800.0000

38

CEUX

Genmab A/S

24/06/2024

9:20:00 AM

1,800.0000

6

AQEU

Genmab A/S

24/06/2024

9:20:00 AM

1,800.0000

6

TQEX

Genmab A/S

24/06/2024

9:20:00 AM

1,800.0000

13

CEUX

Genmab A/S

24/06/2024

9:20:00 AM

1,800.0000

6

TQEX

Genmab A/S

24/06/2024

9:20:00 AM

1,800.0000

43

XCSE

Genmab A/S

24/06/2024

9:20:00 AM

1,800.0000

12

XCSE

Genmab A/S

24/06/2024

9:21:00 AM

1,800.5000

21

XCSE

Genmab A/S

24/06/2024

9:21:00 AM

1,800.5000

20

XCSE

Genmab A/S

24/06/2024

9:21:53 AM

1,801.0000

44

CEUX

Genmab A/S

24/06/2024

9:21:53 AM

1,801.0000

44

CEUX

Genmab A/S

24/06/2024

9:21:53 AM

1,801.0000

22

CEUX

Genmab A/S

24/06/2024

9:21:53 AM

1,801.0000

7

AQEU

Genmab A/S

24/06/2024

9:21:53 AM

1,801.0000

37

AQEU

Genmab A/S

24/06/2024

9:21:53 AM

1,801.0000

22

CEUX

Genmab A/S

24/06/2024

9:21:53 AM

1,801.0000

22

CEUX

Genmab A/S

24/06/2024

9:21:53 AM

1,801.0000

37

CEUX

Genmab A/S

24/06/2024

9:21:53 AM

1,801.0000

22

CEUX

Genmab A/S

24/06/2024

9:21:54 AM

1,801.0000

44

AQEU

Genmab A/S

24/06/2024

9:21:54 AM

1,800.5000

9

XCSE

Genmab A/S

24/06/2024

9:21:54 AM

1,800.5000

24

XCSE

2

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

9:21:54 AM

1,800.5000

9

XCSE

Genmab A/S

24/06/2024

9:21:54 AM

1,800.5000

24

XCSE

Genmab A/S

24/06/2024

9:23:45 AM

1,800.0000

8

CEUX

Genmab A/S

24/06/2024

9:23:45 AM

1,800.0000

5

TQEX

Genmab A/S

24/06/2024

9:23:45 AM

1,800.0000

7

XCSE

Genmab A/S

24/06/2024

9:24:02 AM

1,799.0000

17

CEUX

Genmab A/S

24/06/2024

9:24:23 AM

1,799.5000

36

CEUX

Genmab A/S

24/06/2024

9:25:24 AM

1,802.0000

28

XCSE

Genmab A/S

24/06/2024

9:25:24 AM

1,802.0000

25

CEUX

Genmab A/S

24/06/2024

9:25:24 AM

1,802.0000

25

CEUX

Genmab A/S

24/06/2024

9:25:24 AM

1,802.0000

4

CEUX

Genmab A/S

24/06/2024

9:25:24 AM

1,802.0000

4

AQEU

Genmab A/S

24/06/2024

9:25:24 AM

1,802.0000

9

AQEU

Genmab A/S

24/06/2024

9:25:24 AM

1,802.0000

28

XCSE

Genmab A/S

24/06/2024

9:25:24 AM

1,802.0000

4

XCSE

Genmab A/S

24/06/2024

9:25:24 AM

1,802.0000

31

XCSE

Genmab A/S

24/06/2024

9:25:24 AM

1,801.5000

11

CEUX

Genmab A/S

24/06/2024

9:25:24 AM

1,801.5000

6

CEUX

Genmab A/S

24/06/2024

9:25:24 AM

1,801.5000

18

XCSE

Genmab A/S

24/06/2024

9:26:24 AM

1,801.0000

49

CEUX

Genmab A/S

24/06/2024

9:26:24 AM

1,801.0000

32

CEUX

Genmab A/S

24/06/2024

9:26:24 AM

1,801.0000

10

AQEU

Genmab A/S

24/06/2024

9:26:24 AM

1,801.0000

2

AQEU

Genmab A/S

24/06/2024

9:26:24 AM

1,801.0000

12

TQEX

Genmab A/S

24/06/2024

9:26:24 AM

1,801.0000

89

XCSE

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

21

CEUX

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

19

CEUX

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

20

CEUX

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

8

CEUX

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

19

CEUX

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

8

CEUX

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

3

AQEU

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

2

AQEU

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

2

AQEU

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

1

AQEU

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

2

AQEU

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

2

AQEU

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

1

AQEU

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

2

AQEU

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

2

AQEU

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

3

AQEU

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

2

AQEU

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

3

AQEU

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

2

AQEU

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

5

TQEX

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

5

TQEX

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

5

TQEX

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

5

TQEX

3

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

5

TQEX

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

5

TQEX

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

5

TQEX

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

5

TQEX

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

5

TQEX

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

5

TQEX

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

23

XCSE

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

1

XCSE

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

18

XCSE

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

18

XCSE

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

5

XCSE

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

13

XCSE

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

6

XCSE

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

8

XCSE

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

4

XCSE

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

7

XCSE

Genmab A/S

24/06/2024

9:26:24 AM

1,800.0000

15

XCSE

Genmab A/S

24/06/2024

9:26:24 AM

1,800.0000

4

XCSE

Genmab A/S

24/06/2024

9:26:24 AM

1,800.0000

19

XCSE

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

36

CEUX

Genmab A/S

24/06/2024

9:26:24 AM

1,800.0000

5

TQEX

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

12

CEUX

Genmab A/S

24/06/2024

9:26:24 AM

1,800.0000

19

CEUX

Genmab A/S

24/06/2024

9:26:24 AM

1,800.0000

19

XCSE

Genmab A/S

24/06/2024

9:26:24 AM

1,800.0000

1

AQEU

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

39

XCSE

Genmab A/S

24/06/2024

9:26:24 AM

1,800.5000

16

XCSE

Genmab A/S

24/06/2024

9:33:31 AM

1,803.5000

36

XCSE

Genmab A/S

24/06/2024

9:33:55 AM

1,803.5000

30

CEUX

Genmab A/S

24/06/2024

9:33:55 AM

1,803.5000

26

CEUX

Genmab A/S

24/06/2024

9:33:55 AM

1,803.5000

34

CEUX

Genmab A/S

24/06/2024

9:33:55 AM

1,803.5000

30

CEUX

Genmab A/S

24/06/2024

9:33:55 AM

1,803.5000

34

XCSE

Genmab A/S

24/06/2024

9:33:55 AM

1,803.5000

62

XCSE

Genmab A/S

24/06/2024

9:33:55 AM

1,803.5000

39

XCSE

Genmab A/S

24/06/2024

9:35:02 AM

1,805.0000

15

CEUX

Genmab A/S

24/06/2024

9:35:02 AM

1,805.0000

15

XCSE

Genmab A/S

24/06/2024

9:35:02 AM

1,805.0000

73

XCSE

Genmab A/S

24/06/2024

9:35:07 AM

1,805.0000

14

CEUX

Genmab A/S

24/06/2024

9:35:07 AM

1,805.0000

2

AQEU

Genmab A/S

24/06/2024

9:35:07 AM

1,805.0000

2

AQEU

Genmab A/S

24/06/2024

9:35:07 AM

1,805.0000

14

XCSE

Genmab A/S

24/06/2024

9:35:07 AM

1,805.0000

14

XCSE

Genmab A/S

24/06/2024

9:35:07 AM

1,805.0000

8

XCSE

Genmab A/S

24/06/2024

9:35:07 AM

1,805.0000

14

CEUX

Genmab A/S

24/06/2024

9:35:07 AM

1,805.0000

14

CEUX

Genmab A/S

24/06/2024

9:35:07 AM

1,805.0000

2

AQEU

Genmab A/S

24/06/2024

9:35:07 AM

1,805.0000

14

XCSE

4

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

9:35:07 AM

1,805.0000

14

CEUX

Genmab A/S

24/06/2024

9:35:08 AM

1,805.0000

14

XCSE

Genmab A/S

24/06/2024

9:36:53 AM

1,804.5000

2

XCSE

Genmab A/S

24/06/2024

9:38:03 AM

1,807.5000

70

XCSE

Genmab A/S

24/06/2024

9:38:11 AM

1,807.0000

11

CEUX

Genmab A/S

24/06/2024

9:38:11 AM

1,807.0000

11

CEUX

Genmab A/S

24/06/2024

9:38:11 AM

1,807.0000

5

TQEX

Genmab A/S

24/06/2024

9:38:11 AM

1,807.0000

5

TQEX

Genmab A/S

24/06/2024

9:38:11 AM

1,807.0000

11

XCSE

Genmab A/S

24/06/2024

9:38:11 AM

1,807.0000

11

XCSE

Genmab A/S

24/06/2024

9:38:11 AM

1,807.0000

6

XCSE

Genmab A/S

24/06/2024

9:40:08 AM

1,808.5000

5

CEUX

Genmab A/S

24/06/2024

9:40:08 AM

1,808.5000

14

CEUX

Genmab A/S

24/06/2024

9:40:08 AM

1,808.5000

11

CEUX

Genmab A/S

24/06/2024

9:40:08 AM

1,808.5000

9

CEUX

Genmab A/S

24/06/2024

9:40:08 AM

1,808.5000

16

CEUX

Genmab A/S

24/06/2024

9:40:08 AM

1,808.5000

5

TQEX

Genmab A/S

24/06/2024

9:40:08 AM

1,808.5000

5

TQEX

Genmab A/S

24/06/2024

9:40:08 AM

1,808.5000

5

TQEX

Genmab A/S

24/06/2024

9:40:08 AM

1,808.5000

19

XCSE

Genmab A/S

24/06/2024

9:40:08 AM

1,808.5000

11

XCSE

Genmab A/S

24/06/2024

9:40:08 AM

1,808.5000

9

XCSE

Genmab A/S

24/06/2024

9:40:08 AM

1,808.5000

19

XCSE

Genmab A/S

24/06/2024

9:40:08 AM

1,808.5000

11

XCSE

Genmab A/S

24/06/2024

9:40:08 AM

1,808.5000

9

XCSE

Genmab A/S

24/06/2024

9:40:08 AM

1,808.5000

19

CEUX

Genmab A/S

24/06/2024

9:40:08 AM

1,808.5000

11

CEUX

Genmab A/S

24/06/2024

9:40:08 AM

1,808.5000

9

CEUX

Genmab A/S

24/06/2024

9:40:08 AM

1,808.5000

5

TQEX

Genmab A/S

24/06/2024

9:40:08 AM

1,808.5000

5

TQEX

Genmab A/S

24/06/2024

9:40:08 AM

1,808.5000

5

TQEX

Genmab A/S

24/06/2024

9:40:09 AM

1,808.5000

5

CEUX

Genmab A/S

24/06/2024

9:40:09 AM

1,808.5000

5

CEUX

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

6

CEUX

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

9

CEUX

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

5

TQEX

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

5

TQEX

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

5

TQEX

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

5

TQEX

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

11

XCSE

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

9

XCSE

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

8

XCSE

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

35

XCSE

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

11

XCSE

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

9

XCSE

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

20

XCSE

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

11

XCSE

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

1

XCSE

5

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

8

XCSE

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

11

XCSE

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

9

XCSE

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

6

CEUX

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

5

CEUX

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

9

CEUX

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

6

CEUX

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

3

CEUX

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

5

TQEX

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

5

TQEX

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

9

CEUX

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

27

CEUX

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

9

CEUX

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

4

CEUX

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

5

TQEX

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

5

TQEX

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

5

CEUX

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

1

CEUX

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

9

XCSE

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

9

XCSE

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

9

XCSE

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

5

TQEX

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

9

CEUX

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

9

CEUX

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

5

TQEX

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

8

XCSE

Genmab A/S

24/06/2024

9:40:10 AM

1,808.5000

1

CEUX

Genmab A/S

24/06/2024

9:42:15 AM

1,807.5000

10

XCSE

Genmab A/S

24/06/2024

9:43:38 AM

1,808.0000

12

XCSE

Genmab A/S

24/06/2024

9:43:38 AM

1,808.0000

14

CEUX

Genmab A/S

24/06/2024

9:43:38 AM

1,808.0000

7

CEUX

Genmab A/S

24/06/2024

9:43:42 AM

1,808.0000

9

XCSE

Genmab A/S

24/06/2024

9:43:42 AM

1,808.0000

16

XCSE

Genmab A/S

24/06/2024

9:44:06 AM

1,808.5000

1

TQEX

Genmab A/S

24/06/2024

9:44:06 AM

1,808.5000

9

TQEX

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

16

CEUX

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

9

CEUX

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

9

CEUX

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

9

CEUX

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

9

CEUX

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

7

CEUX

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

5

TQEX

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

5

TQEX

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

5

TQEX

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

9

XCSE

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

9

XCSE

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

9

XCSE

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

9

XCSE

6

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

9

XCSE

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

9

XCSE

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

3

XCSE

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

9

XCSE

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

9

CEUX

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

5

TQEX

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

9

CEUX

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

9

XCSE

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

9

CEUX

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

9

XCSE

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

9

CEUX

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

9

XCSE

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

9

XCSE

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

9

XCSE

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

5

TQEX

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

9

CEUX

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

5

TQEX

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

9

CEUX

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

9

XCSE

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

9

XCSE

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

5

TQEX

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

5

TQEX

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

5

TQEX

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

9

CEUX

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

9

CEUX

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

9

CEUX

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

9

XCSE

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

9

XCSE

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

9

XCSE

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

8

XCSE

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

9

CEUX

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

9

CEUX

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

7

CEUX

Genmab A/S

24/06/2024

9:44:21 AM

1,808.0000

23

TQEX

Genmab A/S

24/06/2024

9:46:46 AM

1,807.0000

9

XCSE

Genmab A/S

24/06/2024

9:46:46 AM

1,807.0000

9

CEUX

Genmab A/S

24/06/2024

9:46:46 AM

1,807.0000

2

CEUX

Genmab A/S

24/06/2024

9:46:46 AM

1,807.0000

9

CEUX

Genmab A/S

24/06/2024

9:46:46 AM

1,807.0000

9

CEUX

Genmab A/S

24/06/2024

9:46:46 AM

1,807.0000

9

CEUX

Genmab A/S

24/06/2024

9:46:46 AM

1,807.0000

9

CEUX

Genmab A/S

24/06/2024

9:46:46 AM

1,807.0000

9

CEUX

Genmab A/S

24/06/2024

9:46:46 AM

1,807.0000

9

CEUX

Genmab A/S

24/06/2024

9:46:46 AM

1,807.0000

7

CEUX

Genmab A/S

24/06/2024

9:46:46 AM

1,807.0000

5

TQEX

Genmab A/S

24/06/2024

9:46:46 AM

1,807.0000

8

TQEX

Genmab A/S

24/06/2024

9:46:46 AM

1,807.0000

5

TQEX

Genmab A/S

24/06/2024

9:46:46 AM

1,807.0000

9

CEUX

7

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

9:46:46 AM

1,807.0000

9

XCSE

Genmab A/S

24/06/2024

9:47:12 AM

1,807.0000

22

XCSE

Genmab A/S

24/06/2024

9:47:12 AM

1,807.0000

38

XCSE

Genmab A/S

24/06/2024

9:47:12 AM

1,807.0000

50

XCSE

Genmab A/S

24/06/2024

9:47:12 AM

1,807.0000

8

AQEU

Genmab A/S

24/06/2024

9:47:12 AM

1,807.0000

8

TQEX

Genmab A/S

24/06/2024

9:47:12 AM

1,807.0000

25

TQEX

Genmab A/S

24/06/2024

9:47:12 AM

1,807.0000

55

CEUX

Genmab A/S

24/06/2024

9:47:12 AM

1,807.0000

5

CEUX

Genmab A/S

24/06/2024

9:47:13 AM

1,807.0000

39

CEUX

Genmab A/S

24/06/2024

9:47:13 AM

1,807.0000

50

XCSE

Genmab A/S

24/06/2024

9:47:13 AM

1,807.0000

11

CEUX

Genmab A/S

24/06/2024

9:47:13 AM

1,807.0000

8

TQEX

Genmab A/S

24/06/2024

9:48:53 AM

1,806.0000

18

CEUX

Genmab A/S

24/06/2024

9:48:53 AM

1,806.0000

46

CEUX

Genmab A/S

24/06/2024

9:49:55 AM

1,806.0000

7

XCSE

Genmab A/S

24/06/2024

9:49:55 AM

1,806.0000

20

XCSE

Genmab A/S

24/06/2024

9:49:55 AM

1,806.0000

26

CEUX

Genmab A/S

24/06/2024

9:49:55 AM

1,806.0000

4

AQEU

Genmab A/S

24/06/2024

9:49:55 AM

1,806.0000

4

AQEU

Genmab A/S

24/06/2024

9:49:55 AM

1,806.0000

5

TQEX

Genmab A/S

24/06/2024

9:49:55 AM

1,806.0000

23

XCSE

Genmab A/S

24/06/2024

9:49:56 AM

1,806.0000

41

XCSE

Genmab A/S

24/06/2024

9:49:56 AM

1,806.0000

21

XCSE

Genmab A/S

24/06/2024

9:49:56 AM

1,806.0000

21

XCSE

Genmab A/S

24/06/2024

9:53:23 AM

1,807.7500

34

CEUX

Genmab A/S

24/06/2024

9:53:23 AM

1,808.0000

5

XCSE

Genmab A/S

24/06/2024

9:53:27 AM

1,807.5000

65

XCSE

Genmab A/S

24/06/2024

9:53:27 AM

1,807.5000

58

CEUX

Genmab A/S

24/06/2024

9:53:27 AM

1,807.5000

58

CEUX

Genmab A/S

24/06/2024

9:53:27 AM

1,807.5000

10

CEUX

Genmab A/S

24/06/2024

9:53:27 AM

1,807.5000

20

CEUX

Genmab A/S

24/06/2024

9:53:27 AM

1,807.5000

9

AQEU

Genmab A/S

24/06/2024

9:53:27 AM

1,807.5000

9

AQEU

Genmab A/S

24/06/2024

9:53:27 AM

1,807.5000

9

AQEU

Genmab A/S

24/06/2024

9:53:27 AM

1,807.5000

7

AQEU

Genmab A/S

24/06/2024

9:53:27 AM

1,807.5000

2

AQEU

Genmab A/S

24/06/2024

9:53:27 AM

1,807.5000

2

AQEU

Genmab A/S

24/06/2024

9:53:27 AM

1,807.5000

6

AQEU

Genmab A/S

24/06/2024

9:53:27 AM

1,807.5000

9

TQEX

Genmab A/S

24/06/2024

9:53:27 AM

1,807.5000

9

TQEX

Genmab A/S

24/06/2024

9:53:27 AM

1,807.5000

9

TQEX

Genmab A/S

24/06/2024

9:53:27 AM

1,807.5000

65

XCSE

Genmab A/S

24/06/2024

9:53:27 AM

1,807.5000

30

XCSE

Genmab A/S

24/06/2024

9:53:28 AM

1,807.5000

19

CEUX

Genmab A/S

24/06/2024

9:54:59 AM

1,806.5000

31

CEUX

Genmab A/S

24/06/2024

9:54:59 AM

1,806.5000

14

CEUX

Genmab A/S

24/06/2024

9:54:59 AM

1,806.5000

20

CEUX

8

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

9:54:59 AM

1,806.5000

7

AQEU

Genmab A/S

24/06/2024

9:54:59 AM

1,806.5000

7

AQEU

Genmab A/S

24/06/2024

9:54:59 AM

1,806.5000

7

TQEX

Genmab A/S

24/06/2024

9:54:59 AM

1,806.5000

7

TQEX

Genmab A/S

24/06/2024

9:54:59 AM

1,806.5000

10

TQEX

Genmab A/S

24/06/2024

9:54:59 AM

1,806.5000

30

XCSE

Genmab A/S

24/06/2024

9:54:59 AM

1,806.5000

21

XCSE

Genmab A/S

24/06/2024

9:54:59 AM

1,806.5000

18

XCSE

Genmab A/S

24/06/2024

9:54:59 AM

1,806.5000

15

CEUX

Genmab A/S

24/06/2024

9:54:59 AM

1,806.5000

36

XCSE

Genmab A/S

24/06/2024

9:57:19 AM

1,806.5000

10

XCSE

Genmab A/S

24/06/2024

9:57:19 AM

1,806.5000

6

XCSE

Genmab A/S

24/06/2024

9:57:19 AM

1,806.5000

44

XCSE

Genmab A/S

24/06/2024

9:57:19 AM

1,806.5000

10

CEUX

Genmab A/S

24/06/2024

9:57:19 AM

1,806.5000

10

CEUX

Genmab A/S

24/06/2024

9:57:19 AM

1,806.5000

5

TQEX

Genmab A/S

24/06/2024

9:57:19 AM

1,806.5000

5

TQEX

Genmab A/S

24/06/2024

9:57:19 AM

1,806.5000

10

XCSE

Genmab A/S

24/06/2024

9:57:19 AM

1,806.5000

34

XCSE

Genmab A/S

24/06/2024

9:57:44 AM

1,805.5000

20

XCSE

Genmab A/S

24/06/2024

9:57:44 AM

1,805.5000

142

XCSE

Genmab A/S

24/06/2024

9:58:54 AM

1,805.0000

22

XCSE

Genmab A/S

24/06/2024

9:58:54 AM

1,805.0000

22

XCSE

Genmab A/S

24/06/2024

9:58:54 AM

1,805.0000

21

CEUX

Genmab A/S

24/06/2024

9:58:54 AM

1,805.0000

21

CEUX

Genmab A/S

24/06/2024

9:58:54 AM

1,805.0000

7

CEUX

Genmab A/S

24/06/2024

9:58:54 AM

1,805.0000

3

AQEU

Genmab A/S

24/06/2024

9:58:54 AM

1,805.0000

5

TQEX

Genmab A/S

24/06/2024

9:58:54 AM

1,805.0000

21

CEUX

Genmab A/S

24/06/2024

9:58:54 AM

1,805.0000

15

CEUX

Genmab A/S

24/06/2024

9:58:54 AM

1,805.0000

5

TQEX

Genmab A/S

24/06/2024

9:58:54 AM

1,805.0000

5

TQEX

Genmab A/S

24/06/2024

9:58:54 AM

1,805.0000

5

TQEX

Genmab A/S

24/06/2024

9:58:54 AM

1,805.0000

5

TQEX

Genmab A/S

24/06/2024

9:58:54 AM

1,805.0000

3

AQEU

Genmab A/S

24/06/2024

9:58:54 AM

1,805.0000

5

TQEX

Genmab A/S

24/06/2024

9:58:54 AM

1,805.0000

5

TQEX

Genmab A/S

24/06/2024

9:58:54 AM

1,805.0000

5

TQEX

Genmab A/S

24/06/2024

9:58:54 AM

1,805.0000

22

XCSE

Genmab A/S

24/06/2024

9:58:54 AM

1,805.0000

22

XCSE

Genmab A/S

24/06/2024

9:58:54 AM

1,805.0000

5

XCSE

Genmab A/S

24/06/2024

9:58:54 AM

1,805.0000

20

CEUX

Genmab A/S

24/06/2024

9:58:54 AM

1,805.0000

5

TQEX

Genmab A/S

24/06/2024

9:58:54 AM

1,805.0000

19

CEUX

Genmab A/S

24/06/2024

10:02:10 AM

1,806.5000

1

AQEU

Genmab A/S

24/06/2024

10:04:29 AM

1,807.0000

58

XCSE

Genmab A/S

24/06/2024

10:04:29 AM

1,807.0000

113

XCSE

Genmab A/S

24/06/2024

10:04:29 AM

1,807.0000

10

CEUX

9

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

10:04:29 AM

1,807.0000

43

CEUX

Genmab A/S

24/06/2024

10:04:29 AM

1,807.0000

8

TQEX

Genmab A/S

24/06/2024

10:04:29 AM

1,807.0000

8

TQEX

Genmab A/S

24/06/2024

10:04:29 AM

1,807.0000

30

TQEX

Genmab A/S

24/06/2024

10:04:29 AM

1,807.0000

28

XCSE

Genmab A/S

24/06/2024

10:04:29 AM

1,807.0000

28

XCSE

Genmab A/S

24/06/2024

10:04:29 AM

1,807.0000

26

XCSE

Genmab A/S

24/06/2024

10:04:29 AM

1,807.0000

28

XCSE

Genmab A/S

24/06/2024

10:07:12 AM

1,806.5000

75

XCSE

Genmab A/S

24/06/2024

10:07:12 AM

1,806.5000

13

XCSE

Genmab A/S

24/06/2024

10:07:12 AM

1,806.5000

79

CEUX

Genmab A/S

24/06/2024

10:07:12 AM

1,806.5000

11

AQEU

Genmab A/S

24/06/2024

10:07:12 AM

1,806.5000

5

TQEX

Genmab A/S

24/06/2024

10:07:12 AM

1,806.5000

8

TQEX

Genmab A/S

24/06/2024

10:07:12 AM

1,806.0000

21

CEUX

Genmab A/S

24/06/2024

10:07:12 AM

1,806.0000

5

TQEX

Genmab A/S

24/06/2024

10:07:12 AM

1,806.0000

23

XCSE

Genmab A/S

24/06/2024

10:07:12 AM

1,806.0000

21

CEUX

Genmab A/S

24/06/2024

10:07:12 AM

1,806.0000

21

CEUX

Genmab A/S

24/06/2024

10:07:12 AM

1,806.0000

21

CEUX

Genmab A/S

24/06/2024

10:07:12 AM

1,806.0000

4

TQEX

Genmab A/S

24/06/2024

10:12:37 AM

1,806.0000

5

TQEX

Genmab A/S

24/06/2024

10:12:37 AM

1,806.0000

9

TQEX

Genmab A/S

24/06/2024

10:12:57 AM

1,806.0000

8

AQEU

Genmab A/S

24/06/2024

10:12:57 AM

1,806.0000

11

AQEU

Genmab A/S

24/06/2024

10:12:57 AM

1,806.0000

2

AQEU

Genmab A/S

24/06/2024

10:12:57 AM

1,806.0000

7

TQEX

Genmab A/S

24/06/2024

10:12:57 AM

1,806.0000

9

TQEX

Genmab A/S

24/06/2024

10:12:57 AM

1,806.0000

2

TQEX

Genmab A/S

24/06/2024

10:13:12 AM

1,806.0000

3

TQEX

Genmab A/S

24/06/2024

10:13:24 AM

1,806.0000

5

TQEX

Genmab A/S

24/06/2024

10:13:24 AM

1,806.0000

3

TQEX

Genmab A/S

24/06/2024

10:13:24 AM

1,806.0000

1

TQEX

Genmab A/S

24/06/2024

10:15:07 AM

1,806.0000

4

TQEX

Genmab A/S

24/06/2024

10:15:08 AM

1,805.5000

204

CEUX

Genmab A/S

24/06/2024

10:15:56 AM

1,806.0000

6

TQEX

Genmab A/S

24/06/2024

10:16:42 AM

1,806.0000

10

CEUX

Genmab A/S

24/06/2024

10:16:42 AM

1,806.0000

8

CEUX

Genmab A/S

24/06/2024

10:16:42 AM

1,806.0000

10

CEUX

Genmab A/S

24/06/2024

10:16:42 AM

1,806.0000

1

CEUX

Genmab A/S

24/06/2024

10:16:42 AM

1,806.0000

5

TQEX

Genmab A/S

24/06/2024

10:16:42 AM

1,806.0000

5

TQEX

Genmab A/S

24/06/2024

10:16:42 AM

1,806.0000

10

XCSE

Genmab A/S

24/06/2024

10:16:42 AM

1,806.0000

7

XCSE

Genmab A/S

24/06/2024

10:16:45 AM

1,805.7500

70

CEUX

Genmab A/S

24/06/2024

10:16:45 AM

1,805.5000

310

CEUX

Genmab A/S

24/06/2024

10:18:53 AM

1,806.0000

27

CEUX

Genmab A/S

24/06/2024

10:18:53 AM

1,806.0000

27

CEUX

10

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

10:18:53 AM

1,806.0000

27

CEUX

Genmab A/S

24/06/2024

10:18:53 AM

1,806.0000

25

CEUX

Genmab A/S

24/06/2024

10:18:53 AM

1,806.0000

2

CEUX

Genmab A/S

24/06/2024

10:18:53 AM

1,806.0000

27

CEUX

Genmab A/S

24/06/2024

10:18:53 AM

1,806.0000

25

CEUX

Genmab A/S

24/06/2024

10:18:53 AM

1,806.0000

2

CEUX

Genmab A/S

24/06/2024

10:18:53 AM

1,806.0000

2

CEUX

Genmab A/S

24/06/2024

10:18:53 AM

1,806.0000

4

AQEU

Genmab A/S

24/06/2024

10:18:53 AM

1,806.0000

20

AQEU

Genmab A/S

24/06/2024

10:18:53 AM

1,806.0000

2

AQEU

Genmab A/S

24/06/2024

10:18:53 AM

1,806.0000

2

AQEU

Genmab A/S

24/06/2024

10:18:53 AM

1,806.0000

9

AQEU

Genmab A/S

24/06/2024

10:18:53 AM

1,806.0000

2

CEUX

Genmab A/S

24/06/2024

10:18:53 AM

1,806.0000

2

CEUX

Genmab A/S

24/06/2024

10:18:53 AM

1,806.0000

4

AQEU

Genmab A/S

24/06/2024

10:18:53 AM

1,806.0000

5

TQEX

Genmab A/S

24/06/2024

10:18:53 AM

1,806.0000

5

TQEX

Genmab A/S

24/06/2024

10:18:53 AM

1,806.0000

5

TQEX

Genmab A/S

24/06/2024

10:18:53 AM

1,806.0000

4

CEUX

Genmab A/S

24/06/2024

10:18:53 AM

1,806.0000

4

CEUX

Genmab A/S

24/06/2024

10:18:53 AM

1,806.0000

30

XCSE

Genmab A/S

24/06/2024

10:18:53 AM

1,806.0000

30

XCSE

Genmab A/S

24/06/2024

10:18:53 AM

1,806.0000

28

XCSE

Genmab A/S

24/06/2024

10:19:00 AM

1,806.0000

30

XCSE

Genmab A/S

24/06/2024

10:19:00 AM

1,806.0000

36

XCSE

Genmab A/S

24/06/2024

10:19:00 AM

1,806.0000

57

XCSE

Genmab A/S

24/06/2024

10:24:39 AM

1,804.0000

21

CEUX

Genmab A/S

24/06/2024

10:24:39 AM

1,804.0000

6

AQEU

Genmab A/S

24/06/2024

10:24:41 AM

1,804.0000

5

CEUX

Genmab A/S

24/06/2024

10:25:16 AM

1,804.5000

7

TQEX

Genmab A/S

24/06/2024

10:25:16 AM

1,804.5000

3

XCSE

Genmab A/S

24/06/2024

10:25:16 AM

1,804.5000

4

XCSE

Genmab A/S

24/06/2024

10:25:16 AM

1,804.5000

2

XCSE

Genmab A/S

24/06/2024

10:25:27 AM

1,804.2500

35

CEUX

Genmab A/S

24/06/2024

10:25:48 AM

1,804.5000

10

TQEX

Genmab A/S

24/06/2024

10:25:48 AM

1,804.5000

14

XCSE

Genmab A/S

24/06/2024

10:26:32 AM

1,804.5000

4

XCSE

Genmab A/S

24/06/2024

10:26:43 AM

1,804.5000

5

TQEX

Genmab A/S

24/06/2024

10:26:43 AM

1,804.5000

4

XCSE

Genmab A/S

24/06/2024

10:26:43 AM

1,804.5000

9

XCSE

Genmab A/S

24/06/2024

10:26:57 AM

1,804.5000

7

XCSE

Genmab A/S

24/06/2024

10:26:57 AM

1,804.5000

28

XCSE

Genmab A/S

24/06/2024

10:27:05 AM

1,804.0000

15

CEUX

Genmab A/S

24/06/2024

10:27:05 AM

1,804.0000

46

XCSE

Genmab A/S

24/06/2024

10:27:05 AM

1,804.0000

7

TQEX

Genmab A/S

24/06/2024

10:27:05 AM

1,804.0000

46

XCSE

Genmab A/S

24/06/2024

10:28:06 AM

1,803.7500

40

CEUX

Genmab A/S

24/06/2024

10:28:37 AM

1,804.0000

13

AQEU

11

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

10:28:37 AM

1,804.0000

1

TQEX

Genmab A/S

24/06/2024

10:28:37 AM

1,804.0000

24

XCSE

Genmab A/S

24/06/2024

10:28:48 AM

1,804.0000

18

XCSE

Genmab A/S

24/06/2024

10:28:48 AM

1,804.0000

22

XCSE

Genmab A/S

24/06/2024

10:29:16 AM

1,804.0000

27

CEUX

Genmab A/S

24/06/2024

10:29:16 AM

1,804.0000

11

CEUX

Genmab A/S

24/06/2024

10:29:41 AM

1,804.0000

39

CEUX

Genmab A/S

24/06/2024

10:30:31 AM

1,804.2500

76

CEUX

Genmab A/S

24/06/2024

10:31:22 AM

1,804.0000

39

CEUX

Genmab A/S

24/06/2024

10:31:22 AM

1,804.0000

40

CEUX

Genmab A/S

24/06/2024

10:31:22 AM

1,804.0000

30

CEUX

Genmab A/S

24/06/2024

10:31:22 AM

1,804.0000

39

CEUX

Genmab A/S

24/06/2024

10:31:22 AM

1,804.0000

1

CEUX

Genmab A/S

24/06/2024

10:31:22 AM

1,804.0000

44

XCSE

Genmab A/S

24/06/2024

10:31:22 AM

1,804.0000

41

XCSE

Genmab A/S

24/06/2024

10:31:23 AM

1,804.0000

39

CEUX

Genmab A/S

24/06/2024

10:31:23 AM

1,804.0000

11

CEUX

Genmab A/S

24/06/2024

10:31:25 AM

1,804.0000

15

CEUX

Genmab A/S

24/06/2024

10:31:25 AM

1,804.0000

24

CEUX

Genmab A/S

24/06/2024

10:31:25 AM

1,804.0000

24

CEUX

Genmab A/S

24/06/2024

10:31:25 AM

1,804.0000

3

AQEU

Genmab A/S

24/06/2024

10:31:25 AM

1,804.0000

2

AQEU

Genmab A/S

24/06/2024

10:31:25 AM

1,804.0000

1

AQEU

Genmab A/S

24/06/2024

10:31:25 AM

1,804.0000

10

AQEU

Genmab A/S

24/06/2024

10:31:25 AM

1,804.0000

6

TQEX

Genmab A/S

24/06/2024

10:32:05 AM

1,803.5000

98

CEUX

Genmab A/S

24/06/2024

10:32:05 AM

1,803.5000

14

AQEU

Genmab A/S

24/06/2024

10:32:05 AM

1,803.5000

15

TQEX

Genmab A/S

24/06/2024

10:32:05 AM

1,803.5000

109

XCSE

Genmab A/S

24/06/2024

10:32:05 AM

1,803.0000

20

CEUX

Genmab A/S

24/06/2024

10:32:05 AM

1,803.0000

16

CEUX

Genmab A/S

24/06/2024

10:32:05 AM

1,803.0000

39

TQEX

Genmab A/S

24/06/2024

10:32:05 AM

1,803.0000

43

XCSE

Genmab A/S

24/06/2024

10:32:05 AM

1,803.0000

121

XCSE

Genmab A/S

24/06/2024

10:40:21 AM

1,802.5000

39

TQEX

Genmab A/S

24/06/2024

10:42:00 AM

1,802.5000

10

XCSE

Genmab A/S

24/06/2024

10:43:10 AM

1,803.5000

8

CEUX

Genmab A/S

24/06/2024

10:43:10 AM

1,803.5000

9

CEUX

Genmab A/S

24/06/2024

10:43:10 AM

1,803.5000

73

CEUX

Genmab A/S

24/06/2024

10:43:10 AM

1,803.5000

5

CEUX

Genmab A/S

24/06/2024

10:43:10 AM

1,803.5000

5

CEUX

Genmab A/S

24/06/2024

10:43:26 AM

1,803.5000

23

TQEX

Genmab A/S

24/06/2024

10:43:26 AM

1,803.5000

39

XCSE

Genmab A/S

24/06/2024

10:43:26 AM

1,803.5000

11

XCSE

Genmab A/S

24/06/2024

10:43:26 AM

1,803.5000

30

XCSE

Genmab A/S

24/06/2024

10:43:26 AM

1,803.5000

11

XCSE

Genmab A/S

24/06/2024

10:43:26 AM

1,803.5000

15

CEUX

Genmab A/S

24/06/2024

10:43:26 AM

1,803.5000

10

TQEX

12

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

10:43:48 AM

1,804.0000

12

AQEU

Genmab A/S

24/06/2024

10:44:24 AM

1,804.0000

45

TQEX

Genmab A/S

24/06/2024

10:44:24 AM

1,804.0000

7

TQEX

Genmab A/S

24/06/2024

10:44:53 AM

1,805.0000

5

AQEU

Genmab A/S

24/06/2024

10:44:53 AM

1,805.0000

2

AQEU

Genmab A/S

24/06/2024

10:45:16 AM

1,805.0000

66

CEUX

Genmab A/S

24/06/2024

10:45:17 AM

1,805.0000

13

XCSE

Genmab A/S

24/06/2024

10:47:28 AM

1,806.5000

4

CEUX

Genmab A/S

24/06/2024

10:48:31 AM

1,807.0000

1

CEUX

Genmab A/S

24/06/2024

10:48:58 AM

1,807.5000

41

CEUX

Genmab A/S

24/06/2024

10:48:58 AM

1,807.5000

30

XCSE

Genmab A/S

24/06/2024

10:49:24 AM

1,807.0000

22

CEUX

Genmab A/S

24/06/2024

10:49:24 AM

1,807.0000

20

CEUX

Genmab A/S

24/06/2024

10:49:24 AM

1,807.0000

2

CEUX

Genmab A/S

24/06/2024

10:49:24 AM

1,807.0000

20

CEUX

Genmab A/S

24/06/2024

10:49:24 AM

1,807.0000

4

AQEU

Genmab A/S

24/06/2024

10:49:24 AM

1,807.0000

4

AQEU

Genmab A/S

24/06/2024

10:49:24 AM

1,807.0000

36

AQEU

Genmab A/S

24/06/2024

10:49:24 AM

1,807.0000

22

CEUX

Genmab A/S

24/06/2024

10:49:24 AM

1,807.0000

22

CEUX

Genmab A/S

24/06/2024

10:49:24 AM

1,807.0000

16

CEUX

Genmab A/S

24/06/2024

10:49:24 AM

1,807.0000

24

XCSE

Genmab A/S

24/06/2024

10:49:24 AM

1,807.0000

24

XCSE

Genmab A/S

24/06/2024

10:49:24 AM

1,807.0000

87

XCSE

Genmab A/S

24/06/2024

10:49:24 AM

1,807.0000

1

XCSE

Genmab A/S

24/06/2024

10:49:24 AM

1,806.5000

20

CEUX

Genmab A/S

24/06/2024

10:49:24 AM

1,806.5000

20

CEUX

Genmab A/S

24/06/2024

10:49:24 AM

1,806.5000

7

CEUX

Genmab A/S

24/06/2024

10:49:24 AM

1,806.5000

3

TQEX

Genmab A/S

24/06/2024

10:49:24 AM

1,806.5000

2

TQEX

Genmab A/S

24/06/2024

10:49:24 AM

1,806.5000

2

TQEX

Genmab A/S

24/06/2024

10:50:24 AM

1,807.5000

40

CEUX

Genmab A/S

24/06/2024

10:50:55 AM

1,808.0000

30

XCSE

Genmab A/S

24/06/2024

10:51:21 AM

1,808.5000

5

AQEU

Genmab A/S

24/06/2024

10:51:40 AM

1,808.0000

27

CEUX

Genmab A/S

24/06/2024

10:51:40 AM

1,808.0000

4

AQEU

Genmab A/S

24/06/2024

10:51:40 AM

1,808.0000

5

TQEX

Genmab A/S

24/06/2024

10:51:40 AM

1,808.0000

5

TQEX

Genmab A/S

24/06/2024

10:51:40 AM

1,808.0000

15

TQEX

Genmab A/S

24/06/2024

10:51:40 AM

1,808.0000

31

XCSE

Genmab A/S

24/06/2024

10:51:40 AM

1,808.0000

23

XCSE

Genmab A/S

24/06/2024

10:51:40 AM

1,808.0000

8

XCSE

Genmab A/S

24/06/2024

10:51:40 AM

1,808.0000

11

XCSE

Genmab A/S

24/06/2024

10:51:40 AM

1,808.0000

27

CEUX

Genmab A/S

24/06/2024

10:51:40 AM

1,808.0000

9

CEUX

Genmab A/S

24/06/2024

10:51:40 AM

1,808.0000

4

AQEU

Genmab A/S

24/06/2024

10:51:40 AM

1,808.0000

3

AQEU

Genmab A/S

24/06/2024

10:51:40 AM

1,808.0000

5

TQEX

13

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

10:51:40 AM

1,808.0000

15

TQEX

Genmab A/S

24/06/2024

10:51:51 AM

1,807.5000

20

CEUX

Genmab A/S

24/06/2024

10:51:51 AM

1,807.5000

20

CEUX

Genmab A/S

24/06/2024

10:51:51 AM

1,807.5000

16

CEUX

Genmab A/S

24/06/2024

10:51:51 AM

1,807.5000

5

TQEX

Genmab A/S

24/06/2024

10:51:51 AM

1,807.5000

5

TQEX

Genmab A/S

24/06/2024

10:51:51 AM

1,807.5000

5

TQEX

Genmab A/S

24/06/2024

10:51:51 AM

1,807.5000

4

TQEX

Genmab A/S

24/06/2024

10:51:51 AM

1,807.5000

21

XCSE

Genmab A/S

24/06/2024

10:51:51 AM

1,807.5000

20

XCSE

Genmab A/S

24/06/2024

10:51:51 AM

1,807.5000

21

XCSE

Genmab A/S

24/06/2024

10:51:51 AM

1,807.5000

20

XCSE

Genmab A/S

24/06/2024

10:53:47 AM

1,807.0000

66

CEUX

Genmab A/S

24/06/2024

10:53:47 AM

1,807.0000

18

CEUX

Genmab A/S

24/06/2024

10:54:31 AM

1,807.0000

2

AQEU

Genmab A/S

24/06/2024

10:54:54 AM

1,812.0000

39

CEUX

Genmab A/S

24/06/2024

10:54:54 AM

1,812.0000

6

TQEX

Genmab A/S

24/06/2024

10:54:54 AM

1,812.0000

44

XCSE

Genmab A/S

24/06/2024

10:54:54 AM

1,812.0000

6

CEUX

Genmab A/S

24/06/2024

10:57:08 AM

1,810.0000

50

XCSE

Genmab A/S

24/06/2024

10:57:08 AM

1,810.0000

2

XCSE

Genmab A/S

24/06/2024

10:57:08 AM

1,810.0000

52

XCSE

Genmab A/S

24/06/2024

10:57:08 AM

1,810.5000

48

XCSE

Genmab A/S

24/06/2024

10:57:08 AM

1,810.5000

75

XCSE

Genmab A/S

24/06/2024

10:57:08 AM

1,810.5000

43

XCSE

Genmab A/S

24/06/2024

10:57:08 AM

1,811.0000

25

XCSE

Genmab A/S

24/06/2024

10:57:08 AM

1,811.0000

25

XCSE

Genmab A/S

24/06/2024

10:57:08 AM

1,811.0000

5

XCSE

Genmab A/S

24/06/2024

10:57:08 AM

1,811.0000

20

XCSE

Genmab A/S

24/06/2024

10:57:08 AM

1,811.0000

25

XCSE

Genmab A/S

24/06/2024

10:57:08 AM

1,811.0000

20

XCSE

Genmab A/S

24/06/2024

10:57:08 AM

1,811.0000

25

XCSE

Genmab A/S

24/06/2024

10:57:08 AM

1,811.0000

12

XCSE

Genmab A/S

24/06/2024

10:57:08 AM

1,810.0000

52

XCSE

Genmab A/S

24/06/2024

10:57:08 AM

1,810.0000

8

XCSE

Genmab A/S

24/06/2024

11:01:13 AM

1,808.5000

50

CEUX

Genmab A/S

24/06/2024

11:01:13 AM

1,808.5000

19

CEUX

Genmab A/S

24/06/2024

11:01:13 AM

1,808.5000

10

AQEU

Genmab A/S

24/06/2024

11:01:13 AM

1,808.5000

11

TQEX

Genmab A/S

24/06/2024

11:01:13 AM

1,808.5000

77

XCSE

Genmab A/S

24/06/2024

11:03:18 AM

1,807.5000

31

CEUX

Genmab A/S

24/06/2024

11:03:18 AM

1,807.5000

13

CEUX

Genmab A/S

24/06/2024

11:03:18 AM

1,807.5000

5

AQEU

Genmab A/S

24/06/2024

11:03:18 AM

1,807.5000

5

AQEU

Genmab A/S

24/06/2024

11:03:18 AM

1,807.5000

5

AQEU

Genmab A/S

24/06/2024

11:03:18 AM

1,807.5000

5

AQEU

Genmab A/S

24/06/2024

11:03:18 AM

1,807.5000

5

AQEU

Genmab A/S

24/06/2024

11:03:18 AM

1,807.5000

5

AQEU

14

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

11:03:18 AM

1,807.5000

5

TQEX

Genmab A/S

24/06/2024

11:03:18 AM

1,807.5000

5

TQEX

Genmab A/S

24/06/2024

11:03:18 AM

1,807.5000

34

XCSE

Genmab A/S

24/06/2024

11:03:18 AM

1,807.5000

12

XCSE

Genmab A/S

24/06/2024

11:03:18 AM

1,807.5000

50

AQEU

Genmab A/S

24/06/2024

11:03:18 AM

1,807.0000

51

XCSE

Genmab A/S

24/06/2024

11:03:18 AM

1,807.0000

1

XCSE

Genmab A/S

24/06/2024

11:07:59 AM

1,805.5000

65

CEUX

Genmab A/S

24/06/2024

11:07:59 AM

1,805.5000

10

AQEU

Genmab A/S

24/06/2024

11:07:59 AM

1,805.5000

10

TQEX

Genmab A/S

24/06/2024

11:07:59 AM

1,805.5000

45

XCSE

Genmab A/S

24/06/2024

11:07:59 AM

1,805.5000

15

XCSE

Genmab A/S

24/06/2024

11:07:59 AM

1,805.5000

57

XCSE

Genmab A/S

24/06/2024

11:07:59 AM

1,805.5000

45

XCSE

Genmab A/S

24/06/2024

11:07:59 AM

1,805.5000

21

XCSE

Genmab A/S

24/06/2024

11:07:59 AM

1,805.0000

2

CEUX

Genmab A/S

24/06/2024

11:07:59 AM

1,805.0000

11

CEUX

Genmab A/S

24/06/2024

11:07:59 AM

1,805.0000

8

CEUX

Genmab A/S

24/06/2024

11:07:59 AM

1,805.0000

13

CEUX

Genmab A/S

24/06/2024

11:07:59 AM

1,805.0000

21

CEUX

Genmab A/S

24/06/2024

11:07:59 AM

1,805.0000

2

AQEU

Genmab A/S

24/06/2024

11:07:59 AM

1,805.0000

2

AQEU

Genmab A/S

24/06/2024

11:07:59 AM

1,805.0000

2

AQEU

Genmab A/S

24/06/2024

11:07:59 AM

1,805.0000

2

AQEU

Genmab A/S

24/06/2024

11:07:59 AM

1,805.0000

5

TQEX

Genmab A/S

24/06/2024

11:07:59 AM

1,805.0000

5

TQEX

Genmab A/S

24/06/2024

11:07:59 AM

1,805.0000

50

XCSE

Genmab A/S

24/06/2024

11:07:59 AM

1,805.0000

51

XCSE

Genmab A/S

24/06/2024

11:07:59 AM

1,805.0000

21

XCSE

Genmab A/S

24/06/2024

11:08:01 AM

1,805.0000

21

CEUX

Genmab A/S

24/06/2024

11:08:01 AM

1,805.0000

21

CEUX

Genmab A/S

24/06/2024

11:08:01 AM

1,805.0000

2

AQEU

Genmab A/S

24/06/2024

11:08:01 AM

1,805.0000

4

TQEX

Genmab A/S

24/06/2024

11:12:48 AM

1,806.0000

1

XCSE

Genmab A/S

24/06/2024

11:14:05 AM

1,806.5000

39

CEUX

Genmab A/S

24/06/2024

11:14:18 AM

1,806.5000

33

CEUX

Genmab A/S

24/06/2024

11:16:54 AM

1,806.0000

6

TQEX

Genmab A/S

24/06/2024

11:16:54 AM

1,806.0000

38

CEUX

Genmab A/S

24/06/2024

11:16:54 AM

1,806.0000

38

CEUX

Genmab A/S

24/06/2024

11:16:54 AM

1,806.0000

6

TQEX

Genmab A/S

24/06/2024

11:16:54 AM

1,806.0000

42

XCSE

Genmab A/S

24/06/2024

11:17:15 AM

1,806.5000

9

CEUX

Genmab A/S

24/06/2024

11:17:15 AM

1,806.5000

181

CEUX

Genmab A/S

24/06/2024

11:17:27 AM

1,807.0000

14

AQEU

Genmab A/S

24/06/2024

11:17:27 AM

1,807.0000

20

AQEU

Genmab A/S

24/06/2024

11:17:41 AM

1,807.0000

5

AQEU

Genmab A/S

24/06/2024

11:17:41 AM

1,807.0000

2

AQEU

Genmab A/S

24/06/2024

11:18:33 AM

1,806.5000

733

CEUX

15

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

11:18:33 AM

1,806.5000

58

CEUX

Genmab A/S

24/06/2024

11:18:33 AM

1,806.5000

44

CEUX

Genmab A/S

24/06/2024

11:18:42 AM

1,806.0000

71

CEUX

Genmab A/S

24/06/2024

11:18:42 AM

1,806.0000

50

XCSE

Genmab A/S

24/06/2024

11:18:42 AM

1,806.0000

30

XCSE

Genmab A/S

24/06/2024

11:18:42 AM

1,806.0000

30

XCSE

Genmab A/S

24/06/2024

11:18:42 AM

1,806.0000

57

XCSE

Genmab A/S

24/06/2024

11:20:20 AM

1,804.5000

19

CEUX

Genmab A/S

24/06/2024

11:20:20 AM

1,804.5000

2

AQEU

Genmab A/S

24/06/2024

11:20:20 AM

1,804.5000

19

XCSE

Genmab A/S

24/06/2024

11:25:11 AM

1,803.0000

3

XCSE

Genmab A/S

24/06/2024

11:27:01 AM

1,803.0000

2

XCSE

Genmab A/S

24/06/2024

11:27:45 AM

1,804.0000

8

AQEU

Genmab A/S

24/06/2024

11:27:45 AM

1,804.0000

12

AQEU

Genmab A/S

24/06/2024

11:27:45 AM

1,804.0000

15

AQEU

Genmab A/S

24/06/2024

11:27:56 AM

1,803.7500

33

CEUX

Genmab A/S

24/06/2024

11:27:56 AM

1,804.0000

1

XCSE

Genmab A/S

24/06/2024

11:28:18 AM

1,804.0000

1

TQEX

Genmab A/S

24/06/2024

11:28:18 AM

1,804.0000

3

XCSE

Genmab A/S

24/06/2024

11:28:32 AM

1,804.0000

261

CEUX

Genmab A/S

24/06/2024

11:28:33 AM

1,804.0000

75

CEUX

Genmab A/S

24/06/2024

11:28:33 AM

1,804.0000

10

CEUX

Genmab A/S

24/06/2024

11:29:15 AM

1,804.0000

84

CEUX

Genmab A/S

24/06/2024

11:32:04 AM

1,806.0000

20

CEUX

Genmab A/S

24/06/2024

11:32:04 AM

1,806.5000

71

CEUX

Genmab A/S

24/06/2024

11:32:04 AM

1,806.5000

50

CEUX

Genmab A/S

24/06/2024

11:32:04 AM

1,806.5000

33

CEUX

Genmab A/S

24/06/2024

11:32:04 AM

1,806.5000

13

CEUX

Genmab A/S

24/06/2024

11:32:04 AM

1,806.5000

24

AQEU

Genmab A/S

24/06/2024

11:32:04 AM

1,806.5000

25

TQEX

Genmab A/S

24/06/2024

11:32:04 AM

1,806.5000

186

XCSE

Genmab A/S

24/06/2024

11:32:04 AM

1,806.0000

21

XCSE

Genmab A/S

24/06/2024

11:32:04 AM

1,806.0000

19

XCSE

Genmab A/S

24/06/2024

11:32:04 AM

1,806.0000

21

XCSE

Genmab A/S

24/06/2024

11:32:04 AM

1,806.0000

19

XCSE

Genmab A/S

24/06/2024

11:32:04 AM

1,806.0000

17

XCSE

Genmab A/S

24/06/2024

11:32:04 AM

1,806.0000

16

XCSE

Genmab A/S

24/06/2024

11:32:04 AM

1,806.0000

18

CEUX

Genmab A/S

24/06/2024

11:32:04 AM

1,806.0000

2

CEUX

Genmab A/S

24/06/2024

11:32:04 AM

1,806.0000

18

CEUX

Genmab A/S

24/06/2024

11:32:04 AM

1,806.0000

18

CEUX

Genmab A/S

24/06/2024

11:32:04 AM

1,806.0000

2

CEUX

Genmab A/S

24/06/2024

11:32:04 AM

1,806.0000

13

CEUX

Genmab A/S

24/06/2024

11:32:04 AM

1,806.0000

14

CEUX

Genmab A/S

24/06/2024

11:32:04 AM

1,806.0000

2

AQEU

Genmab A/S

24/06/2024

11:32:04 AM

1,806.0000

2

AQEU

Genmab A/S

24/06/2024

11:32:04 AM

1,806.0000

2

AQEU

Genmab A/S

24/06/2024

11:32:04 AM

1,806.0000

5

TQEX

16

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

11:32:04 AM

1,806.0000

5

TQEX

Genmab A/S

24/06/2024

11:32:04 AM

1,806.0000

5

TQEX

Genmab A/S

24/06/2024

11:32:04 AM

1,806.0000

5

TQEX

Genmab A/S

24/06/2024

11:32:04 AM

1,806.0000

5

TQEX

Genmab A/S

24/06/2024

11:32:04 AM

1,806.0000

5

TQEX

Genmab A/S

24/06/2024

11:32:04 AM

1,806.0000

3

TQEX

Genmab A/S

24/06/2024

11:32:04 AM

1,806.0000

3

TQEX

Genmab A/S

24/06/2024

11:32:04 AM

1,806.0000

5

TQEX

Genmab A/S

24/06/2024

11:32:04 AM

1,806.0000

5

TQEX

Genmab A/S

24/06/2024

11:32:04 AM

1,806.0000

5

TQEX

Genmab A/S

24/06/2024

11:32:04 AM

1,806.0000

5

TQEX

Genmab A/S

24/06/2024

11:32:04 AM

1,806.0000

28

AQEU

Genmab A/S

24/06/2024

11:32:04 AM

1,806.0000

5

TQEX

Genmab A/S

24/06/2024

11:32:04 AM

1,806.0000

27

XCSE

Genmab A/S

24/06/2024

11:32:04 AM

1,806.0000

3

XCSE

Genmab A/S

24/06/2024

11:32:04 AM

1,806.0000

15

XCSE

Genmab A/S

24/06/2024

11:32:04 AM

1,806.0000

33

XCSE

Genmab A/S

24/06/2024

11:39:32 AM

1,805.0000

1

TQEX

Genmab A/S

24/06/2024

11:39:32 AM

1,805.0000

5

XCSE

Genmab A/S

24/06/2024

11:39:43 AM

1,805.0000

30

XCSE

Genmab A/S

24/06/2024

11:39:43 AM

1,805.0000

3

XCSE

Genmab A/S

24/06/2024

11:39:54 AM

1,805.0000

5

XCSE

Genmab A/S

24/06/2024

11:40:34 AM

1,805.0000

6

AQEU

Genmab A/S

24/06/2024

11:40:34 AM

1,805.0000

34

XCSE

Genmab A/S

24/06/2024

11:40:34 AM

1,805.0000

30

XCSE

Genmab A/S

24/06/2024

11:40:34 AM

1,805.0000

10

XCSE

Genmab A/S

24/06/2024

11:40:52 AM

1,805.0000

1

XCSE

Genmab A/S

24/06/2024

11:41:16 AM

1,805.0000

3

XCSE

Genmab A/S

24/06/2024

11:42:19 AM

1,804.5000

100

XCSE

Genmab A/S

24/06/2024

11:44:26 AM

1,804.7500

192

CEUX

Genmab A/S

24/06/2024

11:44:26 AM

1,805.0000

6

AQEU

Genmab A/S

24/06/2024

11:44:26 AM

1,805.0000

1

TQEX

Genmab A/S

24/06/2024

11:44:26 AM

1,805.0000

7

XCSE

Genmab A/S

24/06/2024

11:44:26 AM

1,805.0000

30

XCSE

Genmab A/S

24/06/2024

11:44:26 AM

1,805.0000

40

CEUX

Genmab A/S

24/06/2024

11:44:26 AM

1,805.0000

34

CEUX

Genmab A/S

24/06/2024

11:44:26 AM

1,805.0000

10

CEUX

Genmab A/S

24/06/2024

11:44:40 AM

1,804.5000

97

CEUX

Genmab A/S

24/06/2024

11:44:40 AM

1,804.5000

8

CEUX

Genmab A/S

24/06/2024

11:44:40 AM

1,804.5000

75

CEUX

Genmab A/S

24/06/2024

11:44:40 AM

1,804.5000

8

CEUX

Genmab A/S

24/06/2024

11:44:40 AM

1,804.5000

3

CEUX

Genmab A/S

24/06/2024

11:44:40 AM

1,804.5000

8

CEUX

Genmab A/S

24/06/2024

11:44:40 AM

1,804.5000

8

CEUX

Genmab A/S

24/06/2024

11:44:40 AM

1,804.5000

8

CEUX

Genmab A/S

24/06/2024

11:44:40 AM

1,804.5000

8

CEUX

Genmab A/S

24/06/2024

11:44:40 AM

1,804.5000

8

CEUX

Genmab A/S

24/06/2024

11:44:40 AM

1,804.5000

5

CEUX

17

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

11:44:40 AM

1,804.5000

14

AQEU

Genmab A/S

24/06/2024

11:44:40 AM

1,804.5000

1

AQEU

Genmab A/S

24/06/2024

11:44:40 AM

1,804.5000

11

AQEU

Genmab A/S

24/06/2024

11:44:40 AM

1,804.5000

1

AQEU

Genmab A/S

24/06/2024

11:44:40 AM

1,804.5000

25

AQEU

Genmab A/S

24/06/2024

11:44:40 AM

1,804.5000

5

TQEX

Genmab A/S

24/06/2024

11:44:40 AM

1,804.5000

36

TQEX

Genmab A/S

24/06/2024

11:44:40 AM

1,804.5000

15

TQEX

Genmab A/S

24/06/2024

11:44:40 AM

1,804.5000

5

TQEX

Genmab A/S

24/06/2024

11:44:40 AM

1,804.5000

11

TQEX

Genmab A/S

24/06/2024

11:44:40 AM

1,804.0000

5

TQEX

Genmab A/S

24/06/2024

11:44:40 AM

1,804.5000

8

XCSE

Genmab A/S

24/06/2024

11:44:40 AM

1,804.5000

7

XCSE

Genmab A/S

24/06/2024

11:44:40 AM

1,804.5000

83

XCSE

Genmab A/S

24/06/2024

11:44:40 AM

1,804.5000

7

XCSE

Genmab A/S

24/06/2024

11:44:40 AM

1,804.5000

11

XCSE

Genmab A/S

24/06/2024

11:44:40 AM

1,804.5000

7

XCSE

Genmab A/S

24/06/2024

11:44:40 AM

1,804.5000

36

XCSE

Genmab A/S

24/06/2024

11:44:40 AM

1,804.5000

17

XCSE

Genmab A/S

24/06/2024

11:44:40 AM

1,804.0000

1

XCSE

Genmab A/S

24/06/2024

11:44:40 AM

1,804.0000

17

XCSE

Genmab A/S

24/06/2024

11:44:40 AM

1,804.0000

2

AQEU

Genmab A/S

24/06/2024

11:46:02 AM

1,804.0000

70

CEUX

Genmab A/S

24/06/2024

11:47:10 AM

1,804.0000

64

CEUX

Genmab A/S

24/06/2024

11:47:10 AM

1,804.0000

4

TQEX

Genmab A/S

24/06/2024

11:47:10 AM

1,804.0000

6

TQEX

Genmab A/S

24/06/2024

11:47:10 AM

1,804.0000

70

XCSE

Genmab A/S

24/06/2024

11:47:10 AM

1,804.0000

9

CEUX

Genmab A/S

24/06/2024

11:47:10 AM

1,803.5000

13

CEUX

Genmab A/S

24/06/2024

11:47:11 AM

1,803.5000

7

CEUX

Genmab A/S

24/06/2024

11:49:47 AM

1,805.0000

14

CEUX

Genmab A/S

24/06/2024

11:49:47 AM

1,805.0000

18

CEUX

Genmab A/S

24/06/2024

11:49:47 AM

1,805.0000

16

CEUX

Genmab A/S

24/06/2024

11:49:47 AM

1,805.0000

5

CEUX

Genmab A/S

24/06/2024

11:49:47 AM

1,805.0000

31

XCSE

Genmab A/S

24/06/2024

11:49:47 AM

1,805.0000

1

XCSE

Genmab A/S

24/06/2024

11:52:06 AM

1,804.5000

50

CEUX

Genmab A/S

24/06/2024

11:52:06 AM

1,804.5000

12

CEUX

Genmab A/S

24/06/2024

11:52:06 AM

1,804.5000

24

CEUX

Genmab A/S

24/06/2024

11:52:06 AM

1,804.5000

14

TQEX

Genmab A/S

24/06/2024

11:52:06 AM

1,804.5000

95

XCSE

Genmab A/S

24/06/2024

11:52:06 AM

1,804.5000

12

CEUX

Genmab A/S

24/06/2024

11:52:06 AM

1,804.0000

22

CEUX

Genmab A/S

24/06/2024

11:52:06 AM

1,804.0000

3

CEUX

Genmab A/S

24/06/2024

11:52:08 AM

1,804.0000

16

CEUX

Genmab A/S

24/06/2024

11:52:08 AM

1,804.0000

22

CEUX

Genmab A/S

24/06/2024

11:52:08 AM

1,804.0000

23

XCSE

Genmab A/S

24/06/2024

11:52:08 AM

1,804.0000

20

XCSE

18

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

11:52:08 AM

1,804.0000

5

TQEX

Genmab A/S

24/06/2024

11:52:08 AM

1,804.0000

5

TQEX

Genmab A/S

24/06/2024

11:52:08 AM

1,804.0000

19

CEUX

Genmab A/S

24/06/2024

11:52:08 AM

1,804.0000

8

CEUX

Genmab A/S

24/06/2024

11:52:08 AM

1,804.0000

11

CEUX

Genmab A/S

24/06/2024

11:52:08 AM

1,804.0000

5

TQEX

Genmab A/S

24/06/2024

11:52:08 AM

1,804.0000

5

TQEX

Genmab A/S

24/06/2024

11:52:08 AM

1,804.0000

5

TQEX

Genmab A/S

24/06/2024

11:52:08 AM

1,804.0000

5

TQEX

Genmab A/S

24/06/2024

11:52:08 AM

1,804.0000

30

CEUX

Genmab A/S

24/06/2024

11:52:08 AM

1,804.0000

4

TQEX

Genmab A/S

24/06/2024

11:52:08 AM

1,804.0000

1

TQEX

Genmab A/S

24/06/2024

11:52:08 AM

1,804.0000

5

TQEX

Genmab A/S

24/06/2024

11:52:08 AM

1,804.0000

23

XCSE

Genmab A/S

24/06/2024

11:52:08 AM

1,804.0000

20

XCSE

Genmab A/S

24/06/2024

11:52:08 AM

1,804.0000

46

CEUX

Genmab A/S

24/06/2024

11:52:08 AM

1,804.0000

31

CEUX

Genmab A/S

24/06/2024

11:52:08 AM

1,804.0000

30

XCSE

Genmab A/S

24/06/2024

11:52:08 AM

1,804.0000

26

XCSE

Genmab A/S

24/06/2024

11:54:39 AM

1,802.0000

13

XCSE

Genmab A/S

24/06/2024

11:54:39 AM

1,802.0000

29

XCSE

Genmab A/S

24/06/2024

11:54:39 AM

1,802.0000

45

XCSE

Genmab A/S

24/06/2024

11:54:39 AM

1,802.0000

74

XCSE

Genmab A/S

24/06/2024

11:54:39 AM

1,802.0000

50

XCSE

Genmab A/S

24/06/2024

11:54:39 AM

1,802.0000

45

XCSE

Genmab A/S

24/06/2024

11:54:39 AM

1,802.0000

29

XCSE

Genmab A/S

24/06/2024

11:54:39 AM

1,802.0000

33

XCSE

Genmab A/S

24/06/2024

12:03:19 PM

1,805.0000

385

CEUX

Genmab A/S

24/06/2024

12:04:47 PM

1,803.5000

20

XCSE

Genmab A/S

24/06/2024

12:07:10 PM

1,805.0000

282

CEUX

Genmab A/S

24/06/2024

12:10:15 PM

1,805.0000

69

CEUX

Genmab A/S

24/06/2024

12:10:31 PM

1,805.0000

38

CEUX

Genmab A/S

24/06/2024

12:10:31 PM

1,805.0000

38

CEUX

Genmab A/S

24/06/2024

12:10:31 PM

1,805.0000

1

CEUX

Genmab A/S

24/06/2024

12:12:54 PM

1,804.5000

62

XCSE

Genmab A/S

24/06/2024

12:15:20 PM

1,805.0000

56

CEUX

Genmab A/S

24/06/2024

12:16:26 PM

1,806.0000

23

XCSE

Genmab A/S

24/06/2024

12:17:42 PM

1,806.0000

52

CEUX

Genmab A/S

24/06/2024

12:17:42 PM

1,806.0000

40

CEUX

Genmab A/S

24/06/2024

12:17:42 PM

1,806.0000

23

XCSE

Genmab A/S

24/06/2024

12:17:42 PM

1,806.0000

23

XCSE

Genmab A/S

24/06/2024

12:17:42 PM

1,806.0000

35

XCSE

Genmab A/S

24/06/2024

12:17:42 PM

1,806.0000

8

TQEX

Genmab A/S

24/06/2024

12:17:42 PM

1,806.0000

8

CEUX

Genmab A/S

24/06/2024

12:19:00 PM

1,810.5000

26

XCSE

Genmab A/S

24/06/2024

12:19:00 PM

1,810.5000

26

XCSE

Genmab A/S

24/06/2024

12:19:00 PM

1,810.5000

30

XCSE

Genmab A/S

24/06/2024

12:19:00 PM

1,810.5000

16

XCSE

19

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

12:20:20 PM

1,809.5000

41

XCSE

Genmab A/S

24/06/2024

12:20:20 PM

1,809.5000

62

XCSE

Genmab A/S

24/06/2024

12:20:20 PM

1,809.5000

3

XCSE

Genmab A/S

24/06/2024

12:20:21 PM

1,809.0000

44

XCSE

Genmab A/S

24/06/2024

12:20:21 PM

1,809.0000

44

XCSE

Genmab A/S

24/06/2024

12:20:21 PM

1,809.0000

15

XCSE

Genmab A/S

24/06/2024

12:27:50 PM

1,806.0000

3

TQEX

Genmab A/S

24/06/2024

12:27:50 PM

1,806.0000

10

TQEX

Genmab A/S

24/06/2024

12:27:50 PM

1,806.0000

24

TQEX

Genmab A/S

24/06/2024

12:28:21 PM

1,805.0000

79

CEUX

Genmab A/S

24/06/2024

12:28:21 PM

1,805.0000

76

TQEX

Genmab A/S

24/06/2024

12:28:21 PM

1,805.0000

80

XCSE

Genmab A/S

24/06/2024

12:28:21 PM

1,804.5000

38

XCSE

Genmab A/S

24/06/2024

12:28:21 PM

1,804.5000

11

XCSE

Genmab A/S

24/06/2024

12:28:21 PM

1,804.5000

10

XCSE

Genmab A/S

24/06/2024

12:32:26 PM

1,804.0000

27

XCSE

Genmab A/S

24/06/2024

12:32:38 PM

1,803.5000

81

CEUX

Genmab A/S

24/06/2024

12:36:49 PM

1,803.0000

86

XCSE

Genmab A/S

24/06/2024

12:36:49 PM

1,803.0000

78

CEUX

Genmab A/S

24/06/2024

12:36:49 PM

1,803.0000

12

TQEX

Genmab A/S

24/06/2024

12:36:49 PM

1,803.0000

11

CEUX

Genmab A/S

24/06/2024

12:37:02 PM

1,802.5000

46

XCSE

Genmab A/S

24/06/2024

12:37:02 PM

1,802.5000

46

XCSE

Genmab A/S

24/06/2024

12:37:02 PM

1,802.5000

29

XCSE

Genmab A/S

24/06/2024

12:37:10 PM

1,802.0000

45

XCSE

Genmab A/S

24/06/2024

12:37:10 PM

1,802.0000

46

XCSE

Genmab A/S

24/06/2024

12:37:10 PM

1,802.0000

45

XCSE

Genmab A/S

24/06/2024

12:37:10 PM

1,802.0000

46

XCSE

Genmab A/S

24/06/2024

12:37:10 PM

1,802.0000

32

XCSE

Genmab A/S

24/06/2024

12:37:10 PM

1,802.0000

31

XCSE

Genmab A/S

24/06/2024

12:37:10 PM

1,802.0000

4

XCSE

Genmab A/S

24/06/2024

12:43:19 PM

1,800.0000

25

XCSE

Genmab A/S

24/06/2024

12:43:19 PM

1,800.0000

21

XCSE

Genmab A/S

24/06/2024

12:43:19 PM

1,800.0000

125

XCSE

Genmab A/S

24/06/2024

12:43:19 PM

1,800.0000

72

XCSE

Genmab A/S

24/06/2024

12:43:19 PM

1,800.0000

51

XCSE

Genmab A/S

24/06/2024

12:45:09 PM

1,798.5000

22

XCSE

Genmab A/S

24/06/2024

12:45:09 PM

1,798.5000

22

XCSE

Genmab A/S

24/06/2024

12:45:09 PM

1,798.5000

1

XCSE

Genmab A/S

24/06/2024

12:45:09 PM

1,798.5000

22

CEUX

Genmab A/S

24/06/2024

12:45:09 PM

1,798.5000

4

AQEU

Genmab A/S

24/06/2024

12:45:09 PM

1,798.5000

5

TQEX

Genmab A/S

24/06/2024

12:45:09 PM

1,798.5000

18

AQEU

Genmab A/S

24/06/2024

12:48:55 PM

1,799.5000

41

XCSE

Genmab A/S

24/06/2024

12:48:55 PM

1,799.5000

29

XCSE

Genmab A/S

24/06/2024

12:48:55 PM

1,799.5000

14

XCSE

Genmab A/S

24/06/2024

12:48:55 PM

1,799.5000

45

XCSE

Genmab A/S

24/06/2024

12:53:50 PM

1,800.5000

45

CEUX

20

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

12:53:50 PM

1,800.5000

45

CEUX

Genmab A/S

24/06/2024

12:53:50 PM

1,800.5000

1

CEUX

Genmab A/S

24/06/2024

12:53:50 PM

1,800.5000

4

AQEU

Genmab A/S

24/06/2024

12:53:50 PM

1,800.5000

3

AQEU

Genmab A/S

24/06/2024

12:53:50 PM

1,800.5000

3

AQEU

Genmab A/S

24/06/2024

12:53:50 PM

1,800.5000

4

AQEU

Genmab A/S

24/06/2024

12:53:50 PM

1,800.5000

7

AQEU

Genmab A/S

24/06/2024

12:53:50 PM

1,800.5000

7

AQEU

Genmab A/S

24/06/2024

12:53:50 PM

1,800.5000

7

TQEX

Genmab A/S

24/06/2024

12:53:50 PM

1,800.5000

7

TQEX

Genmab A/S

24/06/2024

12:53:50 PM

1,800.5000

7

TQEX

Genmab A/S

24/06/2024

12:53:50 PM

1,800.5000

7

TQEX

Genmab A/S

24/06/2024

12:53:50 PM

1,800.5000

51

XCSE

Genmab A/S

24/06/2024

12:53:50 PM

1,800.5000

49

XCSE

Genmab A/S

24/06/2024

12:53:50 PM

1,800.5000

34

CEUX

Genmab A/S

24/06/2024

12:55:53 PM

1,801.0000

13

CEUX

Genmab A/S

24/06/2024

12:55:54 PM

1,801.0000

13

CEUX

Genmab A/S

24/06/2024

12:55:55 PM

1,801.0000

13

CEUX

Genmab A/S

24/06/2024

12:55:55 PM

1,801.0000

14

XCSE

Genmab A/S

24/06/2024

12:55:56 PM

1,801.0000

13

CEUX

Genmab A/S

24/06/2024

12:57:57 PM

1,800.5000

95

XCSE

Genmab A/S

24/06/2024

12:57:57 PM

1,800.5000

85

CEUX

Genmab A/S

24/06/2024

12:57:57 PM

1,800.5000

12

AQEU

Genmab A/S

24/06/2024

12:57:57 PM

1,800.5000

14

TQEX

Genmab A/S

24/06/2024

1:03:01 PM

1,801.5000

42

CEUX

Genmab A/S

24/06/2024

1:03:01 PM

1,801.5000

42

CEUX

Genmab A/S

24/06/2024

1:03:01 PM

1,801.5000

13

CEUX

Genmab A/S

24/06/2024

1:03:01 PM

1,801.5000

42

CEUX

Genmab A/S

24/06/2024

1:03:01 PM

1,801.5000

13

CEUX

Genmab A/S

24/06/2024

1:03:01 PM

1,801.5000

20

CEUX

Genmab A/S

24/06/2024

1:03:01 PM

1,801.5000

6

AQEU

Genmab A/S

24/06/2024

1:03:01 PM

1,801.5000

6

AQEU

Genmab A/S

24/06/2024

1:03:01 PM

1,801.5000

6

AQEU

Genmab A/S

24/06/2024

1:03:01 PM

1,801.5000

6

AQEU

Genmab A/S

24/06/2024

1:03:01 PM

1,801.5000

6

AQEU

Genmab A/S

24/06/2024

1:03:01 PM

1,801.5000

7

TQEX

Genmab A/S

24/06/2024

1:03:01 PM

1,801.5000

4

CEUX

Genmab A/S

24/06/2024

1:03:01 PM

1,801.5000

4

CEUX

Genmab A/S

24/06/2024

1:03:01 PM

1,801.5000

6

AQEU

Genmab A/S

24/06/2024

1:03:01 PM

1,801.5000

5

AQEU

Genmab A/S

24/06/2024

1:03:01 PM

1,801.5000

5

AQEU

Genmab A/S

24/06/2024

1:03:01 PM

1,801.5000

7

TQEX

Genmab A/S

24/06/2024

1:03:01 PM

1,801.5000

7

TQEX

Genmab A/S

24/06/2024

1:03:01 PM

1,801.5000

7

TQEX

Genmab A/S

24/06/2024

1:03:01 PM

1,801.5000

7

TQEX

Genmab A/S

24/06/2024

1:03:01 PM

1,801.5000

1

AQEU

Genmab A/S

24/06/2024

1:08:53 PM

1,803.0000

50

CEUX

Genmab A/S

24/06/2024

1:08:53 PM

1,803.0000

39

CEUX

21

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

1:08:53 PM

1,803.0000

38

CEUX

Genmab A/S

24/06/2024

1:08:53 PM

1,803.0000

56

XCSE

Genmab A/S

24/06/2024

1:08:53 PM

1,803.0000

2

AQEU

Genmab A/S

24/06/2024

1:08:53 PM

1,803.0000

12

CEUX

Genmab A/S

24/06/2024

1:08:53 PM

1,803.0000

6

CEUX

Genmab A/S

24/06/2024

1:08:53 PM

1,803.0000

6

AQEU

Genmab A/S

24/06/2024

1:09:00 PM

1,803.0000

43

CEUX

Genmab A/S

24/06/2024

1:09:00 PM

1,803.0000

6

AQEU

Genmab A/S

24/06/2024

1:09:00 PM

1,803.0000

48

XCSE

Genmab A/S

24/06/2024

1:11:35 PM

1,802.5000

26

XCSE

Genmab A/S

24/06/2024

1:11:35 PM

1,802.5000

81

CEUX

Genmab A/S

24/06/2024

1:14:20 PM

1,802.0000

119

CEUX

Genmab A/S

24/06/2024

1:14:52 PM

1,807.0000

22

CEUX

Genmab A/S

24/06/2024

1:14:52 PM

1,807.0000

17

CEUX

Genmab A/S

24/06/2024

1:14:52 PM

1,807.0000

3

AQEU

Genmab A/S

24/06/2024

1:14:52 PM

1,807.0000

9

AQEU

Genmab A/S

24/06/2024

1:14:52 PM

1,807.0000

5

TQEX

Genmab A/S

24/06/2024

1:14:52 PM

1,807.0000

9

TQEX

Genmab A/S

24/06/2024

1:14:52 PM

1,807.0000

23

XCSE

Genmab A/S

24/06/2024

1:14:52 PM

1,807.0000

39

XCSE

Genmab A/S

24/06/2024

1:14:52 PM

1,807.0000

21

CEUX

Genmab A/S

24/06/2024

1:14:52 PM

1,807.0000

5

TQEX

Genmab A/S

24/06/2024

1:14:52 PM

1,807.0000

3

TQEX

Genmab A/S

24/06/2024

1:16:52 PM

1,805.5000

45

CEUX

Genmab A/S

24/06/2024

1:16:52 PM

1,805.5000

7

AQEU

Genmab A/S

24/06/2024

1:16:52 PM

1,805.5000

6

TQEX

Genmab A/S

24/06/2024

1:16:52 PM

1,805.5000

49

XCSE

Genmab A/S

24/06/2024

1:16:52 PM

1,805.5000

25

XCSE

Genmab A/S

24/06/2024

1:16:52 PM

1,805.5000

32

XCSE

Genmab A/S

24/06/2024

1:16:52 PM

1,805.5000

7

XCSE

Genmab A/S

24/06/2024

1:16:52 PM

1,805.5000

7

XCSE

Genmab A/S

24/06/2024

1:16:52 PM

1,805.5000

25

XCSE

Genmab A/S

24/06/2024

1:16:52 PM

1,805.5000

25

XCSE

Genmab A/S

24/06/2024

1:16:52 PM

1,805.5000

25

XCSE

Genmab A/S

24/06/2024

1:16:52 PM

1,805.5000

18

XCSE

Genmab A/S

24/06/2024

1:16:52 PM

1,805.0000

43

XCSE

Genmab A/S

24/06/2024

1:16:52 PM

1,805.0000

43

XCSE

Genmab A/S

24/06/2024

1:16:53 PM

1,805.0000

22

XCSE

Genmab A/S

24/06/2024

1:25:11 PM

1,803.0000

1

XCSE

Genmab A/S

24/06/2024

1:26:08 PM

1,803.5000

40

AQEU

Genmab A/S

24/06/2024

1:28:35 PM

1,802.5000

10

XCSE

Genmab A/S

24/06/2024

1:28:35 PM

1,802.5000

31

XCSE

Genmab A/S

24/06/2024

1:28:35 PM

1,802.5000

31

XCSE

Genmab A/S

24/06/2024

1:28:35 PM

1,802.5000

38

CEUX

Genmab A/S

24/06/2024

1:28:35 PM

1,802.5000

38

CEUX

Genmab A/S

24/06/2024

1:28:35 PM

1,802.5000

6

AQEU

Genmab A/S

24/06/2024

1:28:35 PM

1,802.5000

5

TQEX

Genmab A/S

24/06/2024

1:28:35 PM

1,802.5000

6

AQEU

22

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

1:28:35 PM

1,802.5000

5

TQEX

Genmab A/S

24/06/2024

1:28:35 PM

1,802.5000

31

XCSE

Genmab A/S

24/06/2024

1:29:43 PM

1,803.0000

3

CEUX

Genmab A/S

24/06/2024

1:29:43 PM

1,803.0000

1

CEUX

Genmab A/S

24/06/2024

1:29:43 PM

1,803.0000

10

AQEU

Genmab A/S

24/06/2024

1:29:43 PM

1,803.0000

10

TQEX

Genmab A/S

24/06/2024

1:29:44 PM

1,803.0000

10

XCSE

Genmab A/S

24/06/2024

1:30:10 PM

1,803.0000

13

CEUX

Genmab A/S

24/06/2024

1:30:10 PM

1,803.0000

3

CEUX

Genmab A/S

24/06/2024

1:30:10 PM

1,803.0000

9

AQEU

Genmab A/S

24/06/2024

1:30:10 PM

1,803.0000

9

TQEX

Genmab A/S

24/06/2024

1:30:40 PM

1,803.0000

3

CEUX

Genmab A/S

24/06/2024

1:30:40 PM

1,803.0000

1

TQEX

Genmab A/S

24/06/2024

1:30:40 PM

1,803.0000

10

XCSE

Genmab A/S

24/06/2024

1:30:40 PM

1,803.0000

12

XCSE

Genmab A/S

24/06/2024

1:32:35 PM

1,804.5000

3

XCSE

Genmab A/S

24/06/2024

1:32:37 PM

1,804.5000

4

XCSE

Genmab A/S

24/06/2024

1:32:37 PM

1,804.5000

4

XCSE

Genmab A/S

24/06/2024

1:33:51 PM

1,805.0000

26

XCSE

Genmab A/S

24/06/2024

1:33:51 PM

1,805.0000

42

XCSE

Genmab A/S

24/06/2024

1:33:51 PM

1,805.0000

18

XCSE

Genmab A/S

24/06/2024

1:33:51 PM

1,805.0000

25

CEUX

Genmab A/S

24/06/2024

1:33:51 PM

1,805.0000

38

CEUX

Genmab A/S

24/06/2024

1:33:51 PM

1,805.0000

25

CEUX

Genmab A/S

24/06/2024

1:33:51 PM

1,805.0000

6

CEUX

Genmab A/S

24/06/2024

1:33:51 PM

1,805.0000

5

TQEX

Genmab A/S

24/06/2024

1:33:51 PM

1,805.0000

6

TQEX

Genmab A/S

24/06/2024

1:33:51 PM

1,805.0000

25

CEUX

Genmab A/S

24/06/2024

1:33:51 PM

1,805.0000

25

CEUX

Genmab A/S

24/06/2024

1:34:40 PM

1,810.0000

1

AQEU

Genmab A/S

24/06/2024

1:35:29 PM

1,810.0000

8

CEUX

Genmab A/S

24/06/2024

1:35:29 PM

1,810.0000

8

CEUX

Genmab A/S

24/06/2024

1:35:29 PM

1,810.0000

8

CEUX

Genmab A/S

24/06/2024

1:35:29 PM

1,810.0000

5

TQEX

Genmab A/S

24/06/2024

1:35:29 PM

1,810.0000

5

TQEX

Genmab A/S

24/06/2024

1:35:29 PM

1,810.0000

8

XCSE

Genmab A/S

24/06/2024

1:35:29 PM

1,810.0000

8

XCSE

Genmab A/S

24/06/2024

1:35:29 PM

1,810.0000

8

CEUX

Genmab A/S

24/06/2024

1:35:29 PM

1,810.0000

8

CEUX

Genmab A/S

24/06/2024

1:35:29 PM

1,810.0000

8

CEUX

Genmab A/S

24/06/2024

1:35:29 PM

1,810.0000

4

CEUX

Genmab A/S

24/06/2024

1:35:29 PM

1,810.0000

8

CEUX

Genmab A/S

24/06/2024

1:35:29 PM

1,810.0000

8

CEUX

Genmab A/S

24/06/2024

1:35:29 PM

1,810.0000

8

CEUX

Genmab A/S

24/06/2024

1:35:29 PM

1,810.0000

5

TQEX

Genmab A/S

24/06/2024

1:35:48 PM

1,810.5000

14

AQEU

Genmab A/S

24/06/2024

1:37:51 PM

1,810.5000

9

XCSE

Genmab A/S

24/06/2024

1:37:51 PM

1,810.5000

9

XCSE

23

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

1:37:51 PM

1,810.5000

28

XCSE

Genmab A/S

24/06/2024

1:37:51 PM

1,810.5000

9

XCSE

Genmab A/S

24/06/2024

1:37:51 PM

1,810.5000

30

XCSE

Genmab A/S

24/06/2024

1:37:51 PM

1,810.5000

9

XCSE

Genmab A/S

24/06/2024

1:37:51 PM

1,810.5000

11

XCSE

Genmab A/S

24/06/2024

1:37:51 PM

1,810.5000

30

XCSE

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

16

CEUX

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

13

CEUX

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

2

CEUX

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

8

CEUX

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

28

CEUX

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

3

CEUX

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

2

CEUX

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

3

CEUX

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

28

CEUX

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

28

CEUX

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

3

CEUX

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

10

CEUX

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

3

CEUX

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

5

AQEU

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

5

AQEU

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

5

AQEU

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

2

AQEU

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

5

AQEU

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

2

AQEU

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

2

AQEU

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

3

AQEU

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

2

AQEU

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

5

AQEU

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

5

AQEU

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

3

AQEU

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

5

TQEX

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

5

TQEX

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

5

TQEX

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

5

TQEX

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

5

TQEX

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

5

TQEX

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

5

TQEX

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

8

CEUX

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

10

CEUX

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

10

CEUX

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

10

CEUX

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

12

CEUX

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

9

CEUX

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

31

CEUX

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

5

TQEX

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

6

CEUX

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

33

XCSE

24

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

33

XCSE

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

33

XCSE

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

19

XCSE

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

33

XCSE

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

5

TQEX

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

1

TQEX

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

33

XCSE

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

33

XCSE

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

33

XCSE

Genmab A/S

24/06/2024

1:37:51 PM

1,809.0000

30

CEUX

Genmab A/S

24/06/2024

1:37:51 PM

1,809.0000

5

TQEX

Genmab A/S

24/06/2024

1:37:51 PM

1,809.0000

30

CEUX

Genmab A/S

24/06/2024

1:37:51 PM

1,809.0000

3

AQEU

Genmab A/S

24/06/2024

1:37:51 PM

1,809.0000

5

TQEX

Genmab A/S

24/06/2024

1:37:51 PM

1,809.0000

29

XCSE

Genmab A/S

24/06/2024

1:37:51 PM

1,809.0000

2

XCSE

Genmab A/S

24/06/2024

1:37:51 PM

1,809.0000

29

XCSE

Genmab A/S

24/06/2024

1:37:51 PM

1,809.0000

2

XCSE

Genmab A/S

24/06/2024

1:37:51 PM

1,809.5000

21

XCSE

Genmab A/S

24/06/2024

1:37:51 PM

1,809.0000

5

TQEX

Genmab A/S

24/06/2024

1:37:51 PM

1,809.0000

12

CEUX

Genmab A/S

24/06/2024

1:37:51 PM

1,809.0000

12

XCSE

Genmab A/S

24/06/2024

1:37:51 PM

1,809.0000

5

TQEX

Genmab A/S

24/06/2024

1:45:55 PM

1,812.5000

36

CEUX

Genmab A/S

24/06/2024

1:45:55 PM

1,812.5000

4

CEUX

Genmab A/S

24/06/2024

1:45:55 PM

1,812.5000

4

CEUX

Genmab A/S

24/06/2024

1:45:55 PM

1,812.5000

4

CEUX

Genmab A/S

24/06/2024

1:45:55 PM

1,812.5000

6

AQEU

Genmab A/S

24/06/2024

1:45:55 PM

1,812.5000

5

AQEU

Genmab A/S

24/06/2024

1:45:55 PM

1,812.5000

32

CEUX

Genmab A/S

24/06/2024

1:45:58 PM

1,813.0000

4

TQEX

Genmab A/S

24/06/2024

1:46:15 PM

1,813.5000

5

CEUX

Genmab A/S

24/06/2024

1:46:15 PM

1,813.5000

26

CEUX

Genmab A/S

24/06/2024

1:46:15 PM

1,813.5000

5

CEUX

Genmab A/S

24/06/2024

1:46:15 PM

1,813.5000

26

CEUX

Genmab A/S

24/06/2024

1:46:15 PM

1,813.5000

5

AQEU

Genmab A/S

24/06/2024

1:46:15 PM

1,813.5000

5

AQEU

Genmab A/S

24/06/2024

1:46:15 PM

1,813.5000

5

AQEU

Genmab A/S

24/06/2024

1:46:15 PM

1,813.5000

5

TQEX

Genmab A/S

24/06/2024

1:46:15 PM

1,813.5000

5

TQEX

Genmab A/S

24/06/2024

1:46:15 PM

1,813.5000

2

TQEX

Genmab A/S

24/06/2024

1:46:15 PM

1,813.5000

5

TQEX

Genmab A/S

24/06/2024

1:46:15 PM

1,813.5000

2

TQEX

Genmab A/S

24/06/2024

1:46:15 PM

1,813.5000

34

XCSE

Genmab A/S

24/06/2024

1:46:15 PM

1,813.5000

35

XCSE

Genmab A/S

24/06/2024

1:46:15 PM

1,813.5000

34

XCSE

Genmab A/S

24/06/2024

1:46:15 PM

1,813.5000

10

XCSE

Genmab A/S

24/06/2024

1:46:15 PM

1,813.5000

25

XCSE

25

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

1:46:15 PM

1,813.5000

5

CEUX

Genmab A/S

24/06/2024

1:46:15 PM

1,813.5000

27

CEUX

Genmab A/S

24/06/2024

1:46:15 PM

1,813.5000

5

AQEU

Genmab A/S

24/06/2024

1:46:15 PM

1,813.5000

5

TQEX

Genmab A/S

24/06/2024

1:46:15 PM

1,813.5000

5

TQEX

Genmab A/S

24/06/2024

1:46:15 PM

1,813.5000

5

CEUX

Genmab A/S

24/06/2024

1:46:15 PM

1,813.5000

68

CEUX

Genmab A/S

24/06/2024

1:46:15 PM

1,813.5000

38

CEUX

Genmab A/S

24/06/2024

1:46:15 PM

1,813.0000

5

TQEX

Genmab A/S

24/06/2024

1:46:21 PM

1,813.0000

24

XCSE

Genmab A/S

24/06/2024

1:46:21 PM

1,813.0000

24

XCSE

Genmab A/S

24/06/2024

1:46:21 PM

1,813.0000

23

CEUX

Genmab A/S

24/06/2024

1:46:21 PM

1,813.0000

5

TQEX

Genmab A/S

24/06/2024

1:46:21 PM

1,813.0000

5

TQEX

Genmab A/S

24/06/2024

1:46:21 PM

1,813.0000

5

TQEX

Genmab A/S

24/06/2024

1:46:21 PM

1,813.0000

23

CEUX

Genmab A/S

24/06/2024

1:46:21 PM

1,813.0000

23

CEUX

Genmab A/S

24/06/2024

1:46:27 PM

1,813.0000

7

XCSE

Genmab A/S

24/06/2024

1:46:27 PM

1,813.0000

17

XCSE

Genmab A/S

24/06/2024

1:46:27 PM

1,813.0000

17

XCSE

Genmab A/S

24/06/2024

1:46:27 PM

1,813.0000

17

XCSE

Genmab A/S

24/06/2024

1:49:13 PM

1,813.5000

11

AQEU

Genmab A/S

24/06/2024

1:49:13 PM

1,813.5000

2

AQEU

Genmab A/S

24/06/2024

1:49:13 PM

1,813.5000

9

AQEU

Genmab A/S

24/06/2024

1:49:13 PM

1,813.5000

30

XCSE

Genmab A/S

24/06/2024

1:49:13 PM

1,813.5000

27

XCSE

Genmab A/S

24/06/2024

1:49:43 PM

1,813.0000

7

CEUX

Genmab A/S

24/06/2024

1:49:43 PM

1,813.0000

7

CEUX

Genmab A/S

24/06/2024

1:49:43 PM

1,813.0000

7

CEUX

Genmab A/S

24/06/2024

1:49:43 PM

1,813.0000

2

CEUX

Genmab A/S

24/06/2024

1:49:43 PM

1,813.0000

7

TQEX

Genmab A/S

24/06/2024

1:49:43 PM

1,813.0000

7

TQEX

Genmab A/S

24/06/2024

1:49:43 PM

1,813.0000

6

TQEX

Genmab A/S

24/06/2024

1:49:43 PM

1,813.0000

7

TQEX

Genmab A/S

24/06/2024

1:49:43 PM

1,813.0000

6

TQEX

Genmab A/S

24/06/2024

1:49:43 PM

1,813.0000

6

XCSE

Genmab A/S

24/06/2024

1:49:43 PM

1,813.0000

6

XCSE

Genmab A/S

24/06/2024

1:52:41 PM

1,812.0000

34

XCSE

Genmab A/S

24/06/2024

1:52:41 PM

1,812.0000

34

XCSE

Genmab A/S

24/06/2024

1:52:41 PM

1,812.0000

32

CEUX

Genmab A/S

24/06/2024

1:52:41 PM

1,812.0000

32

CEUX

Genmab A/S

24/06/2024

1:52:41 PM

1,812.0000

4

AQEU

Genmab A/S

24/06/2024

1:52:41 PM

1,812.0000

7

TQEX

Genmab A/S

24/06/2024

1:52:41 PM

1,812.0000

32

CEUX

Genmab A/S

24/06/2024

1:52:41 PM

1,812.0000

7

TQEX

Genmab A/S

24/06/2024

1:52:41 PM

1,812.0000

34

XCSE

Genmab A/S

24/06/2024

1:52:41 PM

1,812.0000

20

CEUX

Genmab A/S

24/06/2024

1:52:41 PM

1,812.0000

10

TQEX

26

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

1:54:58 PM

1,813.5000

1

TQEX

Genmab A/S

24/06/2024

1:54:58 PM

1,813.5000

9

TQEX

Genmab A/S

24/06/2024

1:54:58 PM

1,813.5000

2

TQEX

Genmab A/S

24/06/2024

1:54:58 PM

1,813.5000

16

TQEX

Genmab A/S

24/06/2024

1:54:58 PM

1,813.5000

9

TQEX

Genmab A/S

24/06/2024

1:54:58 PM

1,813.5000

1

TQEX

Genmab A/S

24/06/2024

1:54:58 PM

1,813.5000

2

TQEX

Genmab A/S

24/06/2024

1:54:58 PM

1,813.5000

1

TQEX

Genmab A/S

24/06/2024

1:54:58 PM

1,813.5000

2

TQEX

Genmab A/S

24/06/2024

2:00:00 PM

1,813.0000

36

CEUX

Genmab A/S

24/06/2024

2:00:00 PM

1,813.0000

7

CEUX

Genmab A/S

24/06/2024

2:00:00 PM

1,813.0000

10

CEUX

Genmab A/S

24/06/2024

2:00:00 PM

1,813.5000

27

XCSE

Genmab A/S

24/06/2024

2:00:37 PM

1,813.5000

10

XCSE

Genmab A/S

24/06/2024

2:01:03 PM

1,814.0000

1

CEUX

Genmab A/S

24/06/2024

2:01:03 PM

1,814.0000

1

TQEX

Genmab A/S

24/06/2024

2:01:04 PM

1,814.0000

2

CEUX

Genmab A/S

24/06/2024

2:02:07 PM

1,814.0000

1

CEUX

Genmab A/S

24/06/2024

2:04:11 PM

1,814.0000

10

XCSE

Genmab A/S

24/06/2024

2:04:11 PM

1,814.0000

11

XCSE

Genmab A/S

24/06/2024

2:04:11 PM

1,814.0000

25

XCSE

Genmab A/S

24/06/2024

2:04:11 PM

1,814.0000

19

CEUX

Genmab A/S

24/06/2024

2:04:11 PM

1,814.0000

25

CEUX

Genmab A/S

24/06/2024

2:04:11 PM

1,814.0000

6

TQEX

Genmab A/S

24/06/2024

2:04:33 PM

1,814.0000

19

CEUX

Genmab A/S

24/06/2024

2:04:33 PM

1,814.0000

11

CEUX

Genmab A/S

24/06/2024

2:04:33 PM

1,814.0000

8

CEUX

Genmab A/S

24/06/2024

2:04:33 PM

1,814.0000

3

AQEU

Genmab A/S

24/06/2024

2:04:33 PM

1,814.0000

3

AQEU

Genmab A/S

24/06/2024

2:04:33 PM

1,814.0000

11

XCSE

Genmab A/S

24/06/2024

2:04:33 PM

1,814.0000

10

XCSE

Genmab A/S

24/06/2024

2:04:33 PM

1,814.0000

11

XCSE

Genmab A/S

24/06/2024

2:04:33 PM

1,814.0000

8

XCSE

Genmab A/S

24/06/2024

2:04:33 PM

1,814.0000

5

XCSE

Genmab A/S

24/06/2024

2:04:33 PM

1,814.0000

8

XCSE

Genmab A/S

24/06/2024

2:04:33 PM

1,814.0000

21

XCSE

Genmab A/S

24/06/2024

2:04:33 PM

1,814.0000

21

XCSE

Genmab A/S

24/06/2024

2:04:33 PM

1,814.0000

17

XCSE

Genmab A/S

24/06/2024

2:04:33 PM

1,814.0000

4

XCSE

Genmab A/S

24/06/2024

2:04:33 PM

1,814.0000

17

XCSE

Genmab A/S

24/06/2024

2:04:33 PM

1,814.0000

19

CEUX

Genmab A/S

24/06/2024

2:04:33 PM

1,814.0000

19

CEUX

Genmab A/S

24/06/2024

2:04:33 PM

1,814.0000

19

CEUX

Genmab A/S

24/06/2024

2:04:33 PM

1,814.0000

19

CEUX

Genmab A/S

24/06/2024

2:04:33 PM

1,814.0000

21

XCSE

Genmab A/S

24/06/2024

2:04:33 PM

1,814.0000

21

XCSE

Genmab A/S

24/06/2024

2:04:33 PM

1,814.5000

11

XCSE

Genmab A/S

24/06/2024

2:04:33 PM

1,814.5000

39

XCSE

27

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

2:04:33 PM

1,814.5000

30

XCSE

Genmab A/S

24/06/2024

2:04:33 PM

1,814.5000

27

XCSE

Genmab A/S

24/06/2024

2:04:33 PM

1,814.0000

21

XCSE

Genmab A/S

24/06/2024

2:04:33 PM

1,814.0000

9

TQEX

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

17

XCSE

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

33

XCSE

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

36

XCSE

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

17

XCSE

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

19

XCSE

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

16

CEUX

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

63

CEUX

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

7

CEUX

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

16

CEUX

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

34

CEUX

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

29

CEUX

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

16

CEUX

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

5

CEUX

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

7

CEUX

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

44

CEUX

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

12

CEUX

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

16

CEUX

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

63

CEUX

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

16

CEUX

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

9

CEUX

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

29

CEUX

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

16

CEUX

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

9

CEUX

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

16

CEUX

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

3

CEUX

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

2

AQEU

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

9

AQEU

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

2

AQEU

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

9

AQEU

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

2

AQEU

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

7

AQEU

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

2

AQEU

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

2

AQEU

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

9

AQEU

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

2

AQEU

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

2

AQEU

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

2

AQEU

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

7

TQEX

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

7

TQEX

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

7

TQEX

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

7

TQEX

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

7

TQEX

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

16

TQEX

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

7

TQEX

28

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

25

XCSE

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

44

XCSE

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

17

XCSE

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

11

XCSE

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

63

CEUX

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

16

CEUX

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

16

CEUX

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

7

TQEX

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

58

XCSE

Genmab A/S

24/06/2024

2:06:12 PM

1,814.5000

17

XCSE

Genmab A/S

24/06/2024

2:06:59 PM

1,815.0000

9

CEUX

Genmab A/S

24/06/2024

2:06:59 PM

1,815.0000

10

CEUX

Genmab A/S

24/06/2024

2:06:59 PM

1,815.0000

8

CEUX

Genmab A/S

24/06/2024

2:06:59 PM

1,815.0000

1

XCSE

Genmab A/S

24/06/2024

2:06:59 PM

1,815.0000

3

CEUX

Genmab A/S

24/06/2024

2:09:11 PM

1,818.0000

13

XCSE

Genmab A/S

24/06/2024

2:09:11 PM

1,818.0000

8

XCSE

Genmab A/S

24/06/2024

2:09:11 PM

1,818.0000

13

XCSE

Genmab A/S

24/06/2024

2:09:11 PM

1,818.0000

8

XCSE

Genmab A/S

24/06/2024

2:09:11 PM

1,818.0000

13

XCSE

Genmab A/S

24/06/2024

2:09:11 PM

1,818.0000

8

XCSE

Genmab A/S

24/06/2024

2:09:11 PM

1,818.0000

13

XCSE

Genmab A/S

24/06/2024

2:09:11 PM

1,818.0000

8

XCSE

Genmab A/S

24/06/2024

2:09:11 PM

1,818.0000

8

XCSE

Genmab A/S

24/06/2024

2:09:11 PM

1,818.0000

5

XCSE

Genmab A/S

24/06/2024

2:09:11 PM

1,818.0000

3

XCSE

Genmab A/S

24/06/2024

2:09:11 PM

1,818.0000

13

CEUX

Genmab A/S

24/06/2024

2:09:11 PM

1,818.0000

9

CEUX

Genmab A/S

24/06/2024

2:09:11 PM

1,818.0000

13

CEUX

Genmab A/S

24/06/2024

2:09:11 PM

1,818.0000

9

CEUX

Genmab A/S

24/06/2024

2:09:11 PM

1,818.0000

13

CEUX

Genmab A/S

24/06/2024

2:09:11 PM

1,818.0000

7

CEUX

Genmab A/S

24/06/2024

2:09:11 PM

1,818.0000

13

CEUX

Genmab A/S

24/06/2024

2:09:11 PM

1,818.0000

9

CEUX

Genmab A/S

24/06/2024

2:09:11 PM

1,818.0000

13

CEUX

Genmab A/S

24/06/2024

2:09:11 PM

1,818.0000

7

CEUX

Genmab A/S

24/06/2024

2:09:11 PM

1,818.0000

5

TQEX

Genmab A/S

24/06/2024

2:09:11 PM

1,818.0000

5

TQEX

Genmab A/S

24/06/2024

2:09:56 PM

1,818.0000

5

XCSE

Genmab A/S

24/06/2024

2:10:22 PM

1,820.5000

36

XCSE

Genmab A/S

24/06/2024

2:10:22 PM

1,820.5000

27

XCSE

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

24

XCSE

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

13

XCSE

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

30

XCSE

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

24

XCSE

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

13

XCSE

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

24

XCSE

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

13

XCSE

29

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

24

XCSE

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

13

XCSE

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

23

CEUX

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

13

CEUX

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

13

CEUX

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

10

CEUX

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

3

CEUX

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

10

CEUX

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

3

CEUX

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

9

CEUX

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

11

CEUX

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

13

CEUX

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

23

CEUX

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

13

CEUX

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

23

CEUX

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

13

CEUX

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

10

CEUX

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

13

CEUX

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

13

CEUX

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

13

CEUX

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

9

CEUX

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

1

CEUX

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

13

CEUX

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

9

CEUX

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

17

XCSE

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

7

XCSE

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

13

XCSE

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

10

XCSE

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

23

CEUX

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

13

CEUX

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

14

XCSE

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

4

XCSE

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

11

CEUX

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

9

XCSE

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

24

XCSE

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

4

XCSE

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

6

XCSE

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

7

XCSE

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

18

XCSE

Genmab A/S

24/06/2024

2:10:59 PM

1,821.0000

6

XCSE

Genmab A/S

24/06/2024

2:12:23 PM

1,821.0000

34

XCSE

Genmab A/S

24/06/2024

2:12:24 PM

1,821.0000

30

XCSE

Genmab A/S

24/06/2024

2:13:49 PM

1,821.0000

16

XCSE

Genmab A/S

24/06/2024

2:13:49 PM

1,821.0000

3

XCSE

Genmab A/S

24/06/2024

2:13:49 PM

1,821.0000

16

XCSE

Genmab A/S

24/06/2024

2:13:49 PM

1,821.0000

3

XCSE

Genmab A/S

24/06/2024

2:13:49 PM

1,821.0000

19

CEUX

Genmab A/S

24/06/2024

2:13:49 PM

1,821.0000

19

CEUX

30

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

2:13:49 PM

1,821.0000

19

CEUX

Genmab A/S

24/06/2024

2:13:49 PM

1,821.0000

4

CEUX

Genmab A/S

24/06/2024

2:13:49 PM

1,821.0000

5

TQEX

Genmab A/S

24/06/2024

2:13:49 PM

1,821.0000

3

XCSE

Genmab A/S

24/06/2024

2:13:49 PM

1,821.0000

13

XCSE

Genmab A/S

24/06/2024

2:13:49 PM

1,821.0000

13

XCSE

Genmab A/S

24/06/2024

2:13:49 PM

1,821.0000

18

XCSE

Genmab A/S

24/06/2024

2:13:49 PM

1,821.0000

24

XCSE

Genmab A/S

24/06/2024

2:14:00 PM

1,821.0000

14

CEUX

Genmab A/S

24/06/2024

2:14:00 PM

1,821.0000

11

TQEX

Genmab A/S

24/06/2024

2:14:00 PM

1,821.0000

15

XCSE

Genmab A/S

24/06/2024

2:14:14 PM

1,821.0000

8

XCSE

Genmab A/S

24/06/2024

2:14:14 PM

1,821.0000

27

XCSE

Genmab A/S

24/06/2024

2:14:14 PM

1,821.0000

1

XCSE

Genmab A/S

24/06/2024

2:14:30 PM

1,820.7500

25

CEUX

Genmab A/S

24/06/2024

2:14:30 PM

1,821.0000

14

TQEX

Genmab A/S

24/06/2024

2:14:54 PM

1,821.0000

30

XCSE

Genmab A/S

24/06/2024

2:15:07 PM

1,821.0000

30

XCSE

Genmab A/S

24/06/2024

2:15:07 PM

1,821.0000

1

XCSE

Genmab A/S

24/06/2024

2:15:10 PM

1,820.5000

49

CEUX

Genmab A/S

24/06/2024

2:15:10 PM

1,820.5000

15

CEUX

Genmab A/S

24/06/2024

2:15:10 PM

1,820.5000

8

CEUX

Genmab A/S

24/06/2024

2:15:10 PM

1,820.5000

26

CEUX

Genmab A/S

24/06/2024

2:15:10 PM

1,820.5000

23

CEUX

Genmab A/S

24/06/2024

2:15:10 PM

1,820.5000

34

CEUX

Genmab A/S

24/06/2024

2:15:10 PM

1,820.5000

7

AQEU

Genmab A/S

24/06/2024

2:15:10 PM

1,820.5000

8

TQEX

Genmab A/S

24/06/2024

2:15:10 PM

1,820.5000

8

TQEX

Genmab A/S

24/06/2024

2:15:10 PM

1,820.5000

54

XCSE

Genmab A/S

24/06/2024

2:15:10 PM

1,820.5000

11

XCSE

Genmab A/S

24/06/2024

2:15:10 PM

1,820.5000

15

CEUX

Genmab A/S

24/06/2024

2:15:10 PM

1,820.5000

6

CEUX

Genmab A/S

24/06/2024

2:15:10 PM

1,820.5000

5

AQEU

Genmab A/S

24/06/2024

2:15:10 PM

1,820.5000

2

AQEU

Genmab A/S

24/06/2024

2:15:10 PM

1,820.5000

8

TQEX

Genmab A/S

24/06/2024

2:15:10 PM

1,820.5000

4

AQEU

Genmab A/S

24/06/2024

2:15:10 PM

1,820.5000

3

AQEU

Genmab A/S

24/06/2024

2:15:10 PM

1,820.5000

8

TQEX

Genmab A/S

24/06/2024

2:15:10 PM

1,820.5000

7

AQEU

Genmab A/S

24/06/2024

2:15:10 PM

1,820.5000

30

XCSE

Genmab A/S

24/06/2024

2:15:10 PM

1,820.5000

35

XCSE

Genmab A/S

24/06/2024

2:15:10 PM

1,820.5000

83

XCSE

Genmab A/S

24/06/2024

2:15:10 PM

1,820.5000

13

XCSE

Genmab A/S

24/06/2024

2:15:10 PM

1,820.0000

20

CEUX

Genmab A/S

24/06/2024

2:15:10 PM

1,820.0000

20

CEUX

Genmab A/S

24/06/2024

2:15:10 PM

1,820.0000

20

CEUX

Genmab A/S

24/06/2024

2:15:10 PM

1,820.0000

3

AQEU

Genmab A/S

24/06/2024

2:15:10 PM

1,820.0000

3

AQEU

31

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

2:15:10 PM

1,820.0000

3

AQEU

Genmab A/S

24/06/2024

2:15:10 PM

1,820.0000

3

AQEU

Genmab A/S

24/06/2024

2:15:10 PM

1,820.0000

3

AQEU

Genmab A/S

24/06/2024

2:15:10 PM

1,820.0000

3

AQEU

Genmab A/S

24/06/2024

2:15:10 PM

1,820.0000

38

XCSE

Genmab A/S

24/06/2024

2:15:10 PM

1,820.0000

3

XCSE

Genmab A/S

24/06/2024

2:15:10 PM

1,820.0000

21

XCSE

Genmab A/S

24/06/2024

2:15:10 PM

1,820.0000

50

XCSE

Genmab A/S

24/06/2024

2:15:10 PM

1,820.0000

24

XCSE

Genmab A/S

24/06/2024

2:15:10 PM

1,820.0000

24

XCSE

Genmab A/S

24/06/2024

2:15:10 PM

1,820.0000

38

XCSE

Genmab A/S

24/06/2024

2:15:10 PM

1,820.0000

21

XCSE

Genmab A/S

24/06/2024

2:15:10 PM

1,820.0000

31

XCSE

Genmab A/S

24/06/2024

2:15:10 PM

1,820.0000

3

AQEU

Genmab A/S

24/06/2024

2:15:10 PM

1,820.0000

20

CEUX

Genmab A/S

24/06/2024

2:15:10 PM

1,820.0000

20

CEUX

Genmab A/S

24/06/2024

2:15:10 PM

1,820.0000

20

CEUX

Genmab A/S

24/06/2024

2:15:10 PM

1,820.0000

20

CEUX

Genmab A/S

24/06/2024

2:15:10 PM

1,820.0000

3

AQEU

Genmab A/S

24/06/2024

2:15:10 PM

1,820.0000

21

XCSE

Genmab A/S

24/06/2024

2:15:10 PM

1,820.0000

9

XCSE

Genmab A/S

24/06/2024

2:15:10 PM

1,820.0000

5

CEUX

Genmab A/S

24/06/2024

2:15:10 PM

1,820.0000

21

XCSE

Genmab A/S

24/06/2024

2:15:11 PM

1,820.0000

20

XCSE

Genmab A/S

24/06/2024

2:15:11 PM

1,820.0000

1

XCSE

Genmab A/S

24/06/2024

2:15:13 PM

1,820.0000

11

CEUX

Genmab A/S

24/06/2024

2:15:13 PM

1,820.0000

21

XCSE

Genmab A/S

24/06/2024

2:15:13 PM

1,820.0000

6

XCSE

Genmab A/S

24/06/2024

2:15:13 PM

1,820.0000

20

CEUX

Genmab A/S

24/06/2024

2:22:43 PM

1,819.0000

458

CEUX

Genmab A/S

24/06/2024

2:23:45 PM

1,819.0000

23

XCSE

Genmab A/S

24/06/2024

2:23:45 PM

1,819.0000

225

XCSE

Genmab A/S

24/06/2024

2:23:56 PM

1,819.0000

21

CEUX

Genmab A/S

24/06/2024

2:23:56 PM

1,819.0000

21

CEUX

Genmab A/S

24/06/2024

2:23:56 PM

1,819.0000

1

CEUX

Genmab A/S

24/06/2024

2:23:56 PM

1,819.0000

3

AQEU

Genmab A/S

24/06/2024

2:23:56 PM

1,819.0000

22

AQEU

Genmab A/S

24/06/2024

2:23:56 PM

1,819.0000

5

TQEX

Genmab A/S

24/06/2024

2:23:56 PM

1,819.0000

22

TQEX

Genmab A/S

24/06/2024

2:23:56 PM

1,819.0000

6

XCSE

Genmab A/S

24/06/2024

2:23:56 PM

1,819.0000

21

CEUX

Genmab A/S

24/06/2024

2:23:56 PM

1,819.0000

21

CEUX

Genmab A/S

24/06/2024

2:23:56 PM

1,819.0000

21

CEUX

Genmab A/S

24/06/2024

2:23:56 PM

1,819.0000

21

CEUX

Genmab A/S

24/06/2024

2:23:56 PM

1,819.0000

21

CEUX

Genmab A/S

24/06/2024

2:23:56 PM

1,819.0000

21

CEUX

Genmab A/S

24/06/2024

2:23:56 PM

1,819.0000

21

CEUX

Genmab A/S

24/06/2024

2:23:56 PM

1,819.0000

21

CEUX

32

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

2:23:56 PM

1,819.0000

20

CEUX

Genmab A/S

24/06/2024

2:23:56 PM

1,819.0000

1

AQEU

Genmab A/S

24/06/2024

2:23:56 PM

1,819.0000

5

TQEX

Genmab A/S

24/06/2024

2:23:56 PM

1,819.0000

5

TQEX

Genmab A/S

24/06/2024

2:23:56 PM

1,819.0000

5

TQEX

Genmab A/S

24/06/2024

2:23:56 PM

1,819.0000

2

XCSE

Genmab A/S

24/06/2024

2:23:56 PM

1,819.0000

20

XCSE

Genmab A/S

24/06/2024

2:28:47 PM

1,818.0000

118

CEUX

Genmab A/S

24/06/2024

2:32:16 PM

1,818.5000

3

TQEX

Genmab A/S

24/06/2024

2:32:16 PM

1,818.5000

10

XCSE

Genmab A/S

24/06/2024

2:32:16 PM

1,818.5000

8

XCSE

Genmab A/S

24/06/2024

2:32:29 PM

1,818.5000

7

TQEX

Genmab A/S

24/06/2024

2:32:29 PM

1,818.5000

3

XCSE

Genmab A/S

24/06/2024

2:32:45 PM

1,818.5000

10

XCSE

Genmab A/S

24/06/2024

2:32:45 PM

1,818.5000

3

XCSE

Genmab A/S

24/06/2024

2:33:00 PM

1,818.5000

14

XCSE

Genmab A/S

24/06/2024

2:34:12 PM

1,819.0000

40

CEUX

Genmab A/S

24/06/2024

2:34:12 PM

1,819.0000

17

CEUX

Genmab A/S

24/06/2024

2:34:12 PM

1,819.0000

40

CEUX

Genmab A/S

24/06/2024

2:34:12 PM

1,819.0000

17

CEUX

Genmab A/S

24/06/2024

2:34:12 PM

1,819.0000

40

CEUX

Genmab A/S

24/06/2024

2:34:12 PM

1,819.0000

17

CEUX

Genmab A/S

24/06/2024

2:34:12 PM

1,819.0000

40

CEUX

Genmab A/S

24/06/2024

2:34:12 PM

1,819.0000

13

CEUX

Genmab A/S

24/06/2024

2:34:12 PM

1,819.0000

40

CEUX

Genmab A/S

24/06/2024

2:34:12 PM

1,819.0000

7

CEUX

Genmab A/S

24/06/2024

2:34:12 PM

1,819.0000

40

CEUX

Genmab A/S

24/06/2024

2:34:12 PM

1,819.0000

39

CEUX

Genmab A/S

24/06/2024

2:34:12 PM

1,819.0000

2

CEUX

Genmab A/S

24/06/2024

2:34:12 PM

1,819.0000

6

AQEU

Genmab A/S

24/06/2024

2:34:12 PM

1,819.0000

2

AQEU

Genmab A/S

24/06/2024

2:34:12 PM

1,819.0000

6

AQEU

Genmab A/S

24/06/2024

2:34:12 PM

1,819.0000

2

AQEU

Genmab A/S

24/06/2024

2:34:12 PM

1,819.0000

6

AQEU

Genmab A/S

24/06/2024

2:34:12 PM

1,819.0000

2

AQEU

Genmab A/S

24/06/2024

2:34:12 PM

1,819.0000

5

TQEX

Genmab A/S

24/06/2024

2:34:12 PM

1,819.0000

5

TQEX

Genmab A/S

24/06/2024

2:34:12 PM

1,819.0000

5

TQEX

Genmab A/S

24/06/2024

2:34:12 PM

1,819.0000

45

XCSE

Genmab A/S

24/06/2024

2:34:12 PM

1,819.0000

16

XCSE

Genmab A/S

24/06/2024

2:34:12 PM

1,819.0000

38

CEUX

Genmab A/S

24/06/2024

2:34:12 PM

1,819.0000

16

CEUX

Genmab A/S

24/06/2024

2:34:12 PM

1,819.0000

45

XCSE

Genmab A/S

24/06/2024

2:34:12 PM

1,819.0000

60

XCSE

Genmab A/S

24/06/2024

2:34:13 PM

1,819.0000

29

CEUX

Genmab A/S

24/06/2024

2:34:13 PM

1,819.0000

10

XCSE

Genmab A/S

24/06/2024

2:34:13 PM

1,819.0000

35

XCSE

Genmab A/S

24/06/2024

2:34:13 PM

1,819.0000

40

XCSE

33

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

2:34:13 PM

1,819.0000

11

CEUX

Genmab A/S

24/06/2024

2:35:46 PM

1,819.0000

41

CEUX

Genmab A/S

24/06/2024

2:35:46 PM

1,819.0000

6

AQEU

Genmab A/S

24/06/2024

2:35:46 PM

1,819.0000

6

TQEX

Genmab A/S

24/06/2024

2:35:46 PM

1,819.0000

45

XCSE

Genmab A/S

24/06/2024

2:35:46 PM

1,819.0000

43

XCSE

Genmab A/S

24/06/2024

2:35:54 PM

1,819.0000

20

CEUX

Genmab A/S

24/06/2024

2:35:54 PM

1,819.0000

45

XCSE

Genmab A/S

24/06/2024

2:35:54 PM

1,819.0000

45

XCSE

Genmab A/S

24/06/2024

2:35:54 PM

1,819.0000

45

XCSE

Genmab A/S

24/06/2024

2:35:54 PM

1,819.0000

18

CEUX

Genmab A/S

24/06/2024

2:35:54 PM

1,819.0000

19

XCSE

Genmab A/S

24/06/2024

2:35:54 PM

1,819.0000

3

CEUX

Genmab A/S

24/06/2024

2:35:54 PM

1,819.0000

6

AQEU

Genmab A/S

24/06/2024

2:35:54 PM

1,819.0000

7

CEUX

Genmab A/S

24/06/2024

2:36:02 PM

1,817.5000

20

CEUX

Genmab A/S

24/06/2024

2:36:02 PM

1,817.5000

20

CEUX

Genmab A/S

24/06/2024

2:36:02 PM

1,817.5000

17

CEUX

Genmab A/S

24/06/2024

2:36:02 PM

1,817.5000

3

AQEU

Genmab A/S

24/06/2024

2:36:02 PM

1,817.5000

5

TQEX

Genmab A/S

24/06/2024

2:36:06 PM

1,817.5000

6

CEUX

Genmab A/S

24/06/2024

2:36:06 PM

1,817.5000

1

CEUX

Genmab A/S

24/06/2024

2:36:06 PM

1,817.5000

22

XCSE

Genmab A/S

24/06/2024

2:36:06 PM

1,817.5000

22

XCSE

Genmab A/S

24/06/2024

2:36:06 PM

1,817.5000

24

XCSE

Genmab A/S

24/06/2024

2:36:06 PM

1,817.5000

5

TQEX

Genmab A/S

24/06/2024

2:36:06 PM

1,817.5000

25

CEUX

Genmab A/S

24/06/2024

2:36:06 PM

1,817.5000

30

XCSE

Genmab A/S

24/06/2024

2:36:06 PM

1,817.0000

10

XCSE

Genmab A/S

24/06/2024

2:37:18 PM

1,817.5000

16

XCSE

Genmab A/S

24/06/2024

2:37:18 PM

1,817.5000

80

XCSE

Genmab A/S

24/06/2024

2:37:18 PM

1,817.5000

17

CEUX

Genmab A/S

24/06/2024

2:37:18 PM

1,817.5000

2

AQEU

Genmab A/S

24/06/2024

2:37:18 PM

1,817.5000

5

TQEX

Genmab A/S

24/06/2024

2:37:18 PM

1,817.5000

30

XCSE

Genmab A/S

24/06/2024

2:37:18 PM

1,817.5000

40

XCSE

Genmab A/S

24/06/2024

2:37:18 PM

1,817.5000

82

XCSE

Genmab A/S

24/06/2024

2:37:21 PM

1,817.0000

19

CEUX

Genmab A/S

24/06/2024

2:37:21 PM

1,817.0000

22

XCSE

Genmab A/S

24/06/2024

2:40:29 PM

1,816.0000

2

CEUX

Genmab A/S

24/06/2024

2:40:29 PM

1,816.0000

66

CEUX

Genmab A/S

24/06/2024

2:40:29 PM

1,816.0000

11

TQEX

Genmab A/S

24/06/2024

2:40:29 PM

1,816.0000

76

XCSE

Genmab A/S

24/06/2024

2:40:29 PM

1,816.0000

50

XCSE

Genmab A/S

24/06/2024

2:40:29 PM

1,816.0000

47

CEUX

Genmab A/S

24/06/2024

2:40:29 PM

1,816.0000

10

AQEU

Genmab A/S

24/06/2024

2:40:29 PM

1,816.0000

11

TQEX

Genmab A/S

24/06/2024

2:40:29 PM

1,816.0000

1

TQEX

34

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

2:40:29 PM

1,815.5000

5

TQEX

Genmab A/S

24/06/2024

2:40:29 PM

1,816.0000

40

CEUX

Genmab A/S

24/06/2024

2:42:49 PM

1,817.0000

17

XCSE

Genmab A/S

24/06/2024

2:42:49 PM

1,817.0000

7

XCSE

Genmab A/S

24/06/2024

2:42:49 PM

1,817.0000

7

XCSE

Genmab A/S

24/06/2024

2:42:49 PM

1,817.0000

23

CEUX

Genmab A/S

24/06/2024

2:42:49 PM

1,817.0000

4

CEUX

Genmab A/S

24/06/2024

2:42:49 PM

1,817.0000

3

AQEU

Genmab A/S

24/06/2024

2:42:49 PM

1,817.0000

5

TQEX

Genmab A/S

24/06/2024

2:42:49 PM

1,817.0000

19

CEUX

Genmab A/S

24/06/2024

2:42:49 PM

1,817.0000

14

CEUX

Genmab A/S

24/06/2024

2:42:49 PM

1,817.0000

5

TQEX

Genmab A/S

24/06/2024

2:42:51 PM

1,817.0000

24

XCSE

Genmab A/S

24/06/2024

2:44:09 PM

1,816.0000

182

CEUX

Genmab A/S

24/06/2024

2:45:45 PM

1,815.5000

20

CEUX

Genmab A/S

24/06/2024

2:45:45 PM

1,815.5000

51

CEUX

Genmab A/S

24/06/2024

2:45:45 PM

1,815.5000

5

TQEX

Genmab A/S

24/06/2024

2:45:45 PM

1,815.5000

8

TQEX

Genmab A/S

24/06/2024

2:45:45 PM

1,815.5000

20

XCSE

Genmab A/S

24/06/2024

2:45:45 PM

1,815.5000

57

XCSE

Genmab A/S

24/06/2024

2:46:08 PM

1,815.5000

20

XCSE

Genmab A/S

24/06/2024

2:46:08 PM

1,815.5000

3

XCSE

Genmab A/S

24/06/2024

2:46:08 PM

1,815.5000

84

XCSE

Genmab A/S

24/06/2024

2:46:08 PM

1,815.5000

20

XCSE

Genmab A/S

24/06/2024

2:46:08 PM

1,815.5000

60

XCSE

Genmab A/S

24/06/2024

2:46:08 PM

1,815.5000

20

CEUX

Genmab A/S

24/06/2024

2:46:08 PM

1,815.5000

26

CEUX

Genmab A/S

24/06/2024

2:46:08 PM

1,815.5000

53

CEUX

Genmab A/S

24/06/2024

2:46:08 PM

1,815.5000

20

CEUX

Genmab A/S

24/06/2024

2:46:08 PM

1,815.5000

20

CEUX

Genmab A/S

24/06/2024

2:46:08 PM

1,815.5000

11

CEUX

Genmab A/S

24/06/2024

2:46:08 PM

1,815.5000

16

CEUX

Genmab A/S

24/06/2024

2:46:08 PM

1,815.5000

2

AQEU

Genmab A/S

24/06/2024

2:46:08 PM

1,815.5000

11

AQEU

Genmab A/S

24/06/2024

2:46:08 PM

1,815.5000

42

AQEU

Genmab A/S

24/06/2024

2:46:08 PM

1,815.5000

5

TQEX

Genmab A/S

24/06/2024

2:46:08 PM

1,815.5000

12

TQEX

Genmab A/S

24/06/2024

2:46:08 PM

1,815.5000

40

CEUX

Genmab A/S

24/06/2024

2:47:05 PM

1,815.0000

5

CEUX

Genmab A/S

24/06/2024

2:54:07 PM

1,817.5000

7

XCSE

Genmab A/S

24/06/2024

2:54:07 PM

1,817.5000

13

XCSE

Genmab A/S

24/06/2024

2:54:07 PM

1,817.5000

27

XCSE

Genmab A/S

24/06/2024

2:54:08 PM

1,817.5000

4

XCSE

Genmab A/S

24/06/2024

2:55:11 PM

1,817.5000

1

XCSE

Genmab A/S

24/06/2024

2:55:11 PM

1,817.5000

27

XCSE

Genmab A/S

24/06/2024

2:55:43 PM

1,818.0000

945

CEUX

Genmab A/S

24/06/2024

2:56:25 PM

1,818.5000

1,082

CEUX

Genmab A/S

24/06/2024

2:57:13 PM

1,818.0000

16

XCSE

35

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

2:57:13 PM

1,818.0000

57

XCSE

Genmab A/S

24/06/2024

2:57:13 PM

1,818.0000

18

XCSE

Genmab A/S

24/06/2024

2:57:13 PM

1,818.0000

18

XCSE

Genmab A/S

24/06/2024

2:57:13 PM

1,818.0000

57

XCSE

Genmab A/S

24/06/2024

2:57:13 PM

1,818.0000

17

CEUX

Genmab A/S

24/06/2024

2:57:13 PM

1,818.0000

16

CEUX

Genmab A/S

24/06/2024

2:57:13 PM

1,818.0000

1

CEUX

Genmab A/S

24/06/2024

2:57:13 PM

1,818.0000

16

CEUX

Genmab A/S

24/06/2024

2:57:13 PM

1,818.0000

2

AQEU

Genmab A/S

24/06/2024

2:57:13 PM

1,818.0000

2

AQEU

Genmab A/S

24/06/2024

2:57:13 PM

1,818.0000

5

TQEX

Genmab A/S

24/06/2024

2:57:13 PM

1,818.0000

8

CEUX

Genmab A/S

24/06/2024

2:57:13 PM

1,818.0000

5

TQEX

Genmab A/S

24/06/2024

2:57:13 PM

1,818.0000

5

TQEX

Genmab A/S

24/06/2024

2:57:13 PM

1,818.0000

9

CEUX

Genmab A/S

24/06/2024

2:57:13 PM

1,818.0000

5

TQEX

Genmab A/S

24/06/2024

2:57:13 PM

1,818.0000

13

XCSE

Genmab A/S

24/06/2024

2:57:13 PM

1,818.0000

42

XCSE

Genmab A/S

24/06/2024

2:57:13 PM

1,818.0000

42

XCSE

Genmab A/S

24/06/2024

2:57:13 PM

1,818.0000

13

XCSE

Genmab A/S

24/06/2024

3:02:25 PM

1,821.5000

35

XCSE

Genmab A/S

24/06/2024

3:03:20 PM

1,821.0000

12

CEUX

Genmab A/S

24/06/2024

3:03:20 PM

1,821.0000

12

CEUX

Genmab A/S

24/06/2024

3:03:20 PM

1,821.0000

12

CEUX

Genmab A/S

24/06/2024

3:03:20 PM

1,821.0000

1

CEUX

Genmab A/S

24/06/2024

3:03:20 PM

1,821.0000

2

AQEU

Genmab A/S

24/06/2024

3:03:20 PM

1,821.0000

2

AQEU

Genmab A/S

24/06/2024

3:03:20 PM

1,821.0000

12

CEUX

Genmab A/S

24/06/2024

3:03:20 PM

1,821.0000

12

XCSE

Genmab A/S

24/06/2024

3:03:20 PM

1,821.0000

44

XCSE

Genmab A/S

24/06/2024

3:03:20 PM

1,821.0000

12

XCSE

Genmab A/S

24/06/2024

3:03:20 PM

1,821.0000

12

XCSE

Genmab A/S

24/06/2024

3:03:20 PM

1,821.0000

51

XCSE

Genmab A/S

24/06/2024

3:03:20 PM

1,821.0000

12

CEUX

Genmab A/S

24/06/2024

3:03:20 PM

1,821.0000

12

CEUX

Genmab A/S

24/06/2024

3:03:20 PM

1,821.0000

1

CEUX

Genmab A/S

24/06/2024

3:03:20 PM

1,821.0000

12

CEUX

Genmab A/S

24/06/2024

3:03:20 PM

1,821.0000

12

CEUX

Genmab A/S

24/06/2024

3:03:20 PM

1,821.0000

2

AQEU

Genmab A/S

24/06/2024

3:03:20 PM

1,821.0000

11

AQEU

Genmab A/S

24/06/2024

3:03:20 PM

1,821.0000

2

AQEU

Genmab A/S

24/06/2024

3:03:20 PM

1,821.0000

20

AQEU

Genmab A/S

24/06/2024

3:03:20 PM

1,821.0000

2

AQEU

Genmab A/S

24/06/2024

3:03:20 PM

1,821.0000

2

AQEU

Genmab A/S

24/06/2024

3:03:20 PM

1,821.0000

12

CEUX

Genmab A/S

24/06/2024

3:03:20 PM

1,821.0000

8

CEUX

Genmab A/S

24/06/2024

3:03:20 PM

1,821.0000

1

AQEU

Genmab A/S

24/06/2024

3:03:21 PM

1,820.5000

21

CEUX

36

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

3:03:21 PM

1,820.5000

21

CEUX

Genmab A/S

24/06/2024

3:03:21 PM

1,820.5000

21

CEUX

Genmab A/S

24/06/2024

3:03:21 PM

1,820.5000

21

CEUX

Genmab A/S

24/06/2024

3:03:21 PM

1,820.5000

3

AQEU

Genmab A/S

24/06/2024

3:03:21 PM

1,820.5000

3

AQEU

Genmab A/S

24/06/2024

3:03:21 PM

1,820.5000

10

XCSE

Genmab A/S

24/06/2024

3:03:39 PM

1,819.5000

23

XCSE

Genmab A/S

24/06/2024

3:03:39 PM

1,819.5000

19

XCSE

Genmab A/S

24/06/2024

3:03:39 PM

1,819.5000

50

XCSE

Genmab A/S

24/06/2024

3:03:39 PM

1,819.5000

7

XCSE

Genmab A/S

24/06/2024

3:03:39 PM

1,819.5000

19

XCSE

Genmab A/S

24/06/2024

3:03:39 PM

1,819.5000

12

XCSE

Genmab A/S

24/06/2024

3:03:39 PM

1,819.5000

19

XCSE

Genmab A/S

24/06/2024

3:03:39 PM

1,819.5000

2

XCSE

Genmab A/S

24/06/2024

3:03:39 PM

1,819.5000

21

CEUX

Genmab A/S

24/06/2024

3:03:39 PM

1,819.5000

19

CEUX

Genmab A/S

24/06/2024

3:03:39 PM

1,819.5000

3

AQEU

Genmab A/S

24/06/2024

3:03:39 PM

1,819.5000

2

AQEU

Genmab A/S

24/06/2024

3:03:39 PM

1,819.5000

6

AQEU

Genmab A/S

24/06/2024

3:03:39 PM

1,819.5000

3

AQEU

Genmab A/S

24/06/2024

3:03:39 PM

1,819.5000

5

TQEX

Genmab A/S

24/06/2024

3:03:39 PM

1,819.5000

5

TQEX

Genmab A/S

24/06/2024

3:03:39 PM

1,819.5000

21

CEUX

Genmab A/S

24/06/2024

3:03:39 PM

1,819.5000

19

CEUX

Genmab A/S

24/06/2024

3:03:39 PM

1,819.5000

21

CEUX

Genmab A/S

24/06/2024

3:03:39 PM

1,819.5000

19

CEUX

Genmab A/S

24/06/2024

3:03:39 PM

1,819.0000

19

CEUX

Genmab A/S

24/06/2024

3:03:39 PM

1,819.0000

2

AQEU

Genmab A/S

24/06/2024

3:03:39 PM

1,819.0000

2

AQEU

Genmab A/S

24/06/2024

3:03:39 PM

1,819.0000

5

TQEX

Genmab A/S

24/06/2024

3:03:39 PM

1,819.0000

1

TQEX

Genmab A/S

24/06/2024

3:03:39 PM

1,819.0000

5

TQEX

Genmab A/S

24/06/2024

3:03:39 PM

1,819.5000

13

XCSE

Genmab A/S

24/06/2024

3:03:39 PM

1,819.5000

39

XCSE

Genmab A/S

24/06/2024

3:03:39 PM

1,819.5000

6

XCSE

Genmab A/S

24/06/2024

3:03:39 PM

1,819.5000

6

XCSE

Genmab A/S

24/06/2024

3:03:39 PM

1,819.5000

19

XCSE

Genmab A/S

24/06/2024

3:03:39 PM

1,819.5000

24

XCSE

Genmab A/S

24/06/2024

3:03:39 PM

1,819.5000

16

XCSE

Genmab A/S

24/06/2024

3:03:39 PM

1,819.5000

5

XCSE

Genmab A/S

24/06/2024

3:03:40 PM

1,819.5000

2

XCSE

Genmab A/S

24/06/2024

3:03:48 PM

1,819.5000

43

XCSE

Genmab A/S

24/06/2024

3:03:48 PM

1,819.5000

1

XCSE

Genmab A/S

24/06/2024

3:05:24 PM

1,817.0000

18

XCSE

Genmab A/S

24/06/2024

3:09:27 PM

1,817.0000

1

CEUX

Genmab A/S

24/06/2024

3:09:27 PM

1,817.0000

44

CEUX

Genmab A/S

24/06/2024

3:09:27 PM

1,817.0000

37

CEUX

Genmab A/S

24/06/2024

3:09:27 PM

1,817.0000

10

CEUX

37

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

3:09:27 PM

1,817.0000

21

CEUX

Genmab A/S

24/06/2024

3:09:27 PM

1,817.0000

7

AQEU

Genmab A/S

24/06/2024

3:09:27 PM

1,817.0000

4

AQEU

Genmab A/S

24/06/2024

3:09:28 PM

1,817.0000

2

AQEU

Genmab A/S

24/06/2024

3:12:05 PM

1,818.5000

5

XCSE

Genmab A/S

24/06/2024

3:12:05 PM

1,818.5000

46

CEUX

Genmab A/S

24/06/2024

3:12:05 PM

1,818.5000

36

CEUX

Genmab A/S

24/06/2024

3:12:05 PM

1,819.0000

37

TQEX

Genmab A/S

24/06/2024

3:12:05 PM

1,818.5000

36

CEUX

Genmab A/S

24/06/2024

3:12:05 PM

1,818.5000

6

CEUX

Genmab A/S

24/06/2024

3:12:05 PM

1,818.5000

4

CEUX

Genmab A/S

24/06/2024

3:12:05 PM

1,818.5000

23

CEUX

Genmab A/S

24/06/2024

3:12:05 PM

1,818.5000

14

CEUX

Genmab A/S

24/06/2024

3:12:05 PM

1,818.5000

6

CEUX

Genmab A/S

24/06/2024

3:12:05 PM

1,818.5000

3

CEUX

Genmab A/S

24/06/2024

3:12:05 PM

1,818.5000

46

XCSE

Genmab A/S

24/06/2024

3:12:05 PM

1,818.5000

8

CEUX

Genmab A/S

24/06/2024

3:12:05 PM

1,818.5000

7

CEUX

Genmab A/S

24/06/2024

3:12:05 PM

1,818.5000

31

CEUX

Genmab A/S

24/06/2024

3:12:05 PM

1,818.5000

7

CEUX

Genmab A/S

24/06/2024

3:12:05 PM

1,818.5000

4

CEUX

Genmab A/S

24/06/2024

3:12:05 PM

1,818.5000

42

CEUX

Genmab A/S

24/06/2024

3:12:05 PM

1,818.5000

4

CEUX

Genmab A/S

24/06/2024

3:12:05 PM

1,818.5000

46

CEUX

Genmab A/S

24/06/2024

3:12:05 PM

1,818.5000

5

CEUX

Genmab A/S

24/06/2024

3:12:06 PM

1,818.5000

21

XCSE

Genmab A/S

24/06/2024

3:12:07 PM

1,818.5000

41

CEUX

Genmab A/S

24/06/2024

3:12:07 PM

1,818.5000

46

CEUX

Genmab A/S

24/06/2024

3:12:07 PM

1,818.5000

5

CEUX

Genmab A/S

24/06/2024

3:12:07 PM

1,818.5000

30

XCSE

Genmab A/S

24/06/2024

3:12:07 PM

1,818.5000

30

XCSE

Genmab A/S

24/06/2024

3:12:07 PM

1,818.5000

21

XCSE

Genmab A/S

24/06/2024

3:12:07 PM

1,818.5000

15

XCSE

Genmab A/S

24/06/2024

3:12:07 PM

1,818.5000

21

XCSE

Genmab A/S

24/06/2024

3:12:07 PM

1,818.5000

15

XCSE

Genmab A/S

24/06/2024

3:12:07 PM

1,818.5000

44

XCSE

Genmab A/S

24/06/2024

3:12:07 PM

1,818.5000

7

XCSE

Genmab A/S

24/06/2024

3:12:07 PM

1,818.5000

36

CEUX

Genmab A/S

24/06/2024

3:12:07 PM

1,818.5000

4

CEUX

Genmab A/S

24/06/2024

3:12:07 PM

1,818.5000

134

CEUX

Genmab A/S

24/06/2024

3:13:23 PM

1,816.0000

20

XCSE

Genmab A/S

24/06/2024

3:13:23 PM

1,816.0000

9

XCSE

Genmab A/S

24/06/2024

3:17:50 PM

1,815.2500

32

CEUX

Genmab A/S

24/06/2024

3:17:50 PM

1,815.5000

2

TQEX

Genmab A/S

24/06/2024

3:17:50 PM

1,815.5000

1

XCSE

Genmab A/S

24/06/2024

3:17:50 PM

1,815.5000

3

CEUX

Genmab A/S

24/06/2024

3:18:00 PM

1,815.2500

22

CEUX

Genmab A/S

24/06/2024

3:18:00 PM

1,815.5000

2

TQEX

38

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

3:18:00 PM

1,815.5000

3

XCSE

Genmab A/S

24/06/2024

3:18:54 PM

1,815.0000

1

AQEU

Genmab A/S

24/06/2024

3:20:04 PM

1,815.0000

8

XCSE

Genmab A/S

24/06/2024

3:20:04 PM

1,815.0000

8

CEUX

Genmab A/S

24/06/2024

3:20:04 PM

1,815.0000

8

CEUX

Genmab A/S

24/06/2024

3:20:04 PM

1,815.0000

5

TQEX

Genmab A/S

24/06/2024

3:20:04 PM

1,815.0000

5

TQEX

Genmab A/S

24/06/2024

3:20:04 PM

1,815.0000

8

XCSE

Genmab A/S

24/06/2024

3:20:04 PM

1,815.0000

17

XCSE

Genmab A/S

24/06/2024

3:20:04 PM

1,815.0000

8

CEUX

Genmab A/S

24/06/2024

3:20:04 PM

1,815.0000

2

XCSE

Genmab A/S

24/06/2024

3:20:04 PM

1,815.0000

6

XCSE

Genmab A/S

24/06/2024

3:20:04 PM

1,815.0000

6

XCSE

Genmab A/S

24/06/2024

3:20:04 PM

1,815.0000

2

XCSE

Genmab A/S

24/06/2024

3:20:04 PM

1,815.0000

8

XCSE

Genmab A/S

24/06/2024

3:20:04 PM

1,815.0000

8

XCSE

Genmab A/S

24/06/2024

3:20:04 PM

1,815.0000

22

XCSE

Genmab A/S

24/06/2024

3:20:04 PM

1,815.0000

22

XCSE

Genmab A/S

24/06/2024

3:20:04 PM

1,815.0000

22

XCSE

Genmab A/S

24/06/2024

3:20:04 PM

1,815.0000

6

XCSE

Genmab A/S

24/06/2024

3:20:04 PM

1,815.0000

3

XCSE

Genmab A/S

24/06/2024

3:20:05 PM

1,814.5000

14

XCSE

Genmab A/S

24/06/2024

3:20:42 PM

1,814.7500

37

CEUX

Genmab A/S

24/06/2024

3:21:13 PM

1,814.5000

7

XCSE

Genmab A/S

24/06/2024

3:21:17 PM

1,814.5000

3

CEUX

Genmab A/S

24/06/2024

3:21:17 PM

1,814.5000

71

CEUX

Genmab A/S

24/06/2024

3:21:17 PM

1,814.5000

35

CEUX

Genmab A/S

24/06/2024

3:21:17 PM

1,814.5000

16

AQEU

Genmab A/S

24/06/2024

3:21:17 PM

1,814.5000

16

TQEX

Genmab A/S

24/06/2024

3:21:17 PM

1,814.5000

50

XCSE

Genmab A/S

24/06/2024

3:21:17 PM

1,814.5000

50

XCSE

Genmab A/S

24/06/2024

3:21:17 PM

1,813.5000

16

XCSE

Genmab A/S

24/06/2024

3:21:17 PM

1,813.5000

26

XCSE

Genmab A/S

24/06/2024

3:21:18 PM

1,813.5000

19

XCSE

Genmab A/S

24/06/2024

3:21:18 PM

1,813.5000

23

XCSE

Genmab A/S

24/06/2024

3:21:18 PM

1,813.5000

32

XCSE

Genmab A/S

24/06/2024

3:21:18 PM

1,813.5000

12

XCSE

Genmab A/S

24/06/2024

3:28:56 PM

1,814.0000

22

CEUX

Genmab A/S

24/06/2024

3:28:56 PM

1,814.5000

10

XCSE

Genmab A/S

24/06/2024

3:28:56 PM

1,814.5000

6

XCSE

Genmab A/S

24/06/2024

3:29:31 PM

1,814.5000

10

AQEU

Genmab A/S

24/06/2024

3:29:50 PM

1,814.0000

5

AQEU

Genmab A/S

24/06/2024

3:29:50 PM

1,814.0000

5

TQEX

Genmab A/S

24/06/2024

3:29:50 PM

1,814.0000

5

TQEX

Genmab A/S

24/06/2024

3:29:50 PM

1,814.0000

9

XCSE

Genmab A/S

24/06/2024

3:29:50 PM

1,814.0000

27

XCSE

Genmab A/S

24/06/2024

3:29:50 PM

1,814.0000

36

XCSE

Genmab A/S

24/06/2024

3:29:50 PM

1,814.0000

16

XCSE

39

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

3:29:51 PM

1,814.0000

8

XCSE

Genmab A/S

24/06/2024

3:30:39 PM

1,817.0000

10

CEUX

Genmab A/S

24/06/2024

3:30:39 PM

1,817.0000

10

CEUX

Genmab A/S

24/06/2024

3:30:39 PM

1,817.0000

10

CEUX

Genmab A/S

24/06/2024

3:30:39 PM

1,817.0000

10

CEUX

Genmab A/S

24/06/2024

3:30:39 PM

1,817.0000

10

CEUX

Genmab A/S

24/06/2024

3:30:39 PM

1,817.0000

10

CEUX

Genmab A/S

24/06/2024

3:30:39 PM

1,817.0000

10

CEUX

Genmab A/S

24/06/2024

3:30:39 PM

1,817.0000

10

CEUX

Genmab A/S

24/06/2024

3:30:39 PM

1,817.0000

10

CEUX

Genmab A/S

24/06/2024

3:30:39 PM

1,817.0000

10

CEUX

Genmab A/S

24/06/2024

3:30:39 PM

1,817.0000

5

CEUX

Genmab A/S

24/06/2024

3:30:39 PM

1,817.0000

1

AQEU

Genmab A/S

24/06/2024

3:30:39 PM

1,817.0000

12

AQEU

Genmab A/S

24/06/2024

3:30:39 PM

1,817.0000

10

XCSE

Genmab A/S

24/06/2024

3:30:39 PM

1,817.0000

105

XCSE

Genmab A/S

24/06/2024

3:30:39 PM

1,817.0000

5

TQEX

Genmab A/S

24/06/2024

3:30:39 PM

1,817.0000

41

TQEX

Genmab A/S

24/06/2024

3:30:39 PM

1,817.0000

30

CEUX

Genmab A/S

24/06/2024

3:30:39 PM

1,817.0000

1

XCSE

Genmab A/S

24/06/2024

3:30:39 PM

1,815.5000

19

XCSE

Genmab A/S

24/06/2024

3:30:39 PM

1,815.5000

6

TQEX

Genmab A/S

24/06/2024

3:30:39 PM

1,815.5000

6

TQEX

Genmab A/S

24/06/2024

3:30:39 PM

1,815.5000

19

XCSE

Genmab A/S

24/06/2024

3:30:39 PM

1,815.5000

39

XCSE

Genmab A/S

24/06/2024

3:30:39 PM

1,815.5000

5

AQEU

Genmab A/S

24/06/2024

3:30:39 PM

1,815.5000

5

AQEU

Genmab A/S

24/06/2024

3:30:39 PM

1,815.5000

6

TQEX

Genmab A/S

24/06/2024

3:30:39 PM

1,815.5000

6

TQEX

Genmab A/S

24/06/2024

3:30:39 PM

1,815.5000

38

XCSE

Genmab A/S

24/06/2024

3:30:39 PM

1,815.5000

8

XCSE

Genmab A/S

24/06/2024

3:30:40 PM

1,815.5000

5

AQEU

Genmab A/S

24/06/2024

3:30:40 PM

1,815.5000

5

AQEU

Genmab A/S

24/06/2024

3:30:40 PM

1,815.5000

14

XCSE

Genmab A/S

24/06/2024

3:30:40 PM

1,815.5000

31

XCSE

Genmab A/S

24/06/2024

3:34:05 PM

1,816.5000

15

XCSE

Genmab A/S

24/06/2024

3:34:57 PM

1,815.5000

7

XCSE

Genmab A/S

24/06/2024

3:36:12 PM

1,820.5000

72

XCSE

Genmab A/S

24/06/2024

3:36:12 PM

1,820.5000

70

XCSE

Genmab A/S

24/06/2024

3:36:12 PM

1,820.5000

44

XCSE

Genmab A/S

24/06/2024

3:36:35 PM

1,817.0000

23

XCSE

Genmab A/S

24/06/2024

3:36:35 PM

1,817.0000

22

CEUX

Genmab A/S

24/06/2024

3:36:35 PM

1,817.0000

5

TQEX

Genmab A/S

24/06/2024

3:36:36 PM

1,817.0000

23

XCSE

Genmab A/S

24/06/2024

3:39:33 PM

1,817.5000

27

XCSE

Genmab A/S

24/06/2024

3:39:33 PM

1,817.5000

90

XCSE

Genmab A/S

24/06/2024

3:39:33 PM

1,817.5000

7

TQEX

Genmab A/S

24/06/2024

3:39:33 PM

1,817.5000

7

AQEU

40

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

3:39:33 PM

1,817.5000

4

TQEX

Genmab A/S

24/06/2024

3:39:33 PM

1,817.5000

52

XCSE

Genmab A/S

24/06/2024

3:39:34 PM

1,817.5000

6

AQEU

Genmab A/S

24/06/2024

3:39:34 PM

1,817.5000

17

XCSE

Genmab A/S

24/06/2024

3:40:41 PM

1,818.0000

22

XCSE

Genmab A/S

24/06/2024

3:40:50 PM

1,821.0000

22

XCSE

Genmab A/S

24/06/2024

3:40:50 PM

1,821.0000

9

XCSE

Genmab A/S

24/06/2024

3:41:05 PM

1,820.5000

13

XCSE

Genmab A/S

24/06/2024

3:41:05 PM

1,820.5000

7

XCSE

Genmab A/S

24/06/2024

3:41:05 PM

1,820.5000

7

XCSE

Genmab A/S

24/06/2024

3:41:05 PM

1,820.5000

13

XCSE

Genmab A/S

24/06/2024

3:41:05 PM

1,820.5000

20

XCSE

Genmab A/S

24/06/2024

3:41:58 PM

1,818.0000

24

XCSE

Genmab A/S

24/06/2024

3:41:58 PM

1,818.0000

24

XCSE

Genmab A/S

24/06/2024

3:41:58 PM

1,818.0000

24

XCSE

Genmab A/S

24/06/2024

3:41:58 PM

1,818.0000

24

XCSE

Genmab A/S

24/06/2024

3:41:58 PM

1,818.0000

24

XCSE

Genmab A/S

24/06/2024

3:44:00 PM

1,818.5000

5

TQEX

Genmab A/S

24/06/2024

3:44:00 PM

1,818.5000

5

TQEX

Genmab A/S

24/06/2024

3:44:00 PM

1,818.5000

7

TQEX

Genmab A/S

24/06/2024

3:44:00 PM

1,818.5000

7

TQEX

Genmab A/S

24/06/2024

3:44:00 PM

1,818.5000

9

TQEX

Genmab A/S

24/06/2024

3:44:04 PM

1,818.5000

3

AQEU

Genmab A/S

24/06/2024

3:44:04 PM

1,818.5000

10

AQEU

Genmab A/S

24/06/2024

3:44:04 PM

1,818.5000

16

AQEU

Genmab A/S

24/06/2024

3:44:04 PM

1,818.5000

2

AQEU

Genmab A/S

24/06/2024

3:44:04 PM

1,818.5000

6

AQEU

Genmab A/S

24/06/2024

3:44:08 PM

1,817.5000

27

CEUX

Genmab A/S

24/06/2024

3:44:08 PM

1,817.5000

19

CEUX

Genmab A/S

24/06/2024

3:44:08 PM

1,817.5000

4

AQEU

Genmab A/S

24/06/2024

3:44:08 PM

1,817.5000

4

AQEU

Genmab A/S

24/06/2024

3:44:08 PM

1,817.5000

4

AQEU

Genmab A/S

24/06/2024

3:44:08 PM

1,817.5000

4

AQEU

Genmab A/S

24/06/2024

3:44:08 PM

1,817.5000

10

AQEU

Genmab A/S

24/06/2024

3:44:08 PM

1,817.5000

5

TQEX

Genmab A/S

24/06/2024

3:44:08 PM

1,817.5000

5

TQEX

Genmab A/S

24/06/2024

3:44:08 PM

1,817.5000

29

XCSE

Genmab A/S

24/06/2024

3:44:08 PM

1,817.5000

20

XCSE

Genmab A/S

24/06/2024

3:44:08 PM

1,817.0000

19

AQEU

Genmab A/S

24/06/2024

3:44:08 PM

1,817.0000

20

TQEX

Genmab A/S

24/06/2024

3:44:08 PM

1,817.0000

46

XCSE

Genmab A/S

24/06/2024

3:44:08 PM

1,817.0000

101

XCSE

Genmab A/S

24/06/2024

3:44:08 PM

1,817.5000

30

XCSE

Genmab A/S

24/06/2024

3:44:08 PM

1,817.5000

24

XCSE

Genmab A/S

24/06/2024

3:44:08 PM

1,816.0000

10

XCSE

Genmab A/S

24/06/2024

3:45:52 PM

1,815.5000

18

XCSE

Genmab A/S

24/06/2024

3:45:52 PM

1,815.5000

35

XCSE

Genmab A/S

24/06/2024

3:45:52 PM

1,815.0000

30

XCSE

41

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

3:45:52 PM

1,815.0000

1

XCSE

Genmab A/S

24/06/2024

3:45:52 PM

1,815.0000

49

XCSE

Genmab A/S

24/06/2024

3:45:52 PM

1,815.0000

11

XCSE

Genmab A/S

24/06/2024

3:45:52 PM

1,815.0000

20

XCSE

Genmab A/S

24/06/2024

3:45:52 PM

1,815.0000

30

XCSE

Genmab A/S

24/06/2024

3:45:52 PM

1,815.0000

5

TQEX

Genmab A/S

24/06/2024

3:48:53 PM

1,813.5000

36

CEUX

Genmab A/S

24/06/2024

3:48:53 PM

1,813.5000

31

CEUX

Genmab A/S

24/06/2024

3:48:53 PM

1,813.5000

10

AQEU

Genmab A/S

24/06/2024

3:48:53 PM

1,813.5000

10

TQEX

Genmab A/S

24/06/2024

3:48:53 PM

1,813.5000

50

XCSE

Genmab A/S

24/06/2024

3:48:53 PM

1,813.5000

25

XCSE

Genmab A/S

24/06/2024

3:48:53 PM

1,813.0000

11

XCSE

Genmab A/S

24/06/2024

3:48:53 PM

1,813.0000

6

AQEU

Genmab A/S

24/06/2024

3:48:53 PM

1,813.0000

5

TQEX

Genmab A/S

24/06/2024

3:48:53 PM

1,813.0000

31

XCSE

Genmab A/S

24/06/2024

3:48:53 PM

1,813.0000

30

XCSE

Genmab A/S

24/06/2024

3:48:53 PM

1,813.0000

50

XCSE

Genmab A/S

24/06/2024

3:48:53 PM

1,813.0000

3

XCSE

Genmab A/S

24/06/2024

3:48:53 PM

1,813.0000

3

XCSE

Genmab A/S

24/06/2024

3:48:53 PM

1,813.0000

3

XCSE

Genmab A/S

24/06/2024

3:48:53 PM

1,813.0000

17

XCSE

Genmab A/S

24/06/2024

3:48:54 PM

1,813.0000

3

XCSE

Genmab A/S

24/06/2024

3:48:55 PM

1,812.5000

4

AQEU

Genmab A/S

24/06/2024

3:48:55 PM

1,812.5000

34

XCSE

Genmab A/S

24/06/2024

3:48:55 PM

1,812.5000

5

TQEX

Genmab A/S

24/06/2024

3:48:55 PM

1,812.5000

5

TQEX

Genmab A/S

24/06/2024

3:48:55 PM

1,812.5000

34

XCSE

Genmab A/S

24/06/2024

3:48:55 PM

1,812.5000

10

XCSE

Genmab A/S

24/06/2024

3:54:36 PM

1,815.5000

11

TQEX

Genmab A/S

24/06/2024

3:54:37 PM

1,815.5000

11

TQEX

Genmab A/S

24/06/2024

3:54:37 PM

1,815.5000

10

AQEU

Genmab A/S

24/06/2024

3:54:37 PM

1,815.5000

76

XCSE

Genmab A/S

24/06/2024

3:54:37 PM

1,815.5000

76

XCSE

Genmab A/S

24/06/2024

3:54:37 PM

1,815.5000

11

TQEX

Genmab A/S

24/06/2024

3:54:38 PM

1,815.5000

9

XCSE

Genmab A/S

24/06/2024

3:54:39 PM

1,815.5000

14

XCSE

Genmab A/S

24/06/2024

3:55:51 PM

1,814.0000

23

XCSE

Genmab A/S

24/06/2024

3:55:51 PM

1,814.0000

50

XCSE

Genmab A/S

24/06/2024

3:55:51 PM

1,814.0000

10

XCSE

Genmab A/S

24/06/2024

3:55:51 PM

1,814.0000

45

XCSE

Genmab A/S

24/06/2024

3:55:51 PM

1,814.0000

14

AQEU

Genmab A/S

24/06/2024

3:55:51 PM

1,814.0000

2

AQEU

Genmab A/S

24/06/2024

3:55:51 PM

1,814.0000

18

TQEX

Genmab A/S

24/06/2024

3:55:52 PM

1,813.0000

2

AQEU

Genmab A/S

24/06/2024

3:55:52 PM

1,813.0000

32

XCSE

Genmab A/S

24/06/2024

3:55:52 PM

1,813.0000

5

TQEX

Genmab A/S

24/06/2024

3:55:52 PM

1,813.0000

32

XCSE

42

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

3:58:48 PM

1,816.0000

3

AQEU

Genmab A/S

24/06/2024

3:58:48 PM

1,816.0000

9

AQEU

Genmab A/S

24/06/2024

3:58:48 PM

1,816.0000

2

AQEU

Genmab A/S

24/06/2024

3:58:48 PM

1,816.0000

16

AQEU

Genmab A/S

24/06/2024

3:58:48 PM

1,816.0000

7

AQEU

Genmab A/S

24/06/2024

3:59:09 PM

1,816.0000

2

AQEU

Genmab A/S

24/06/2024

3:59:09 PM

1,816.0000

16

AQEU

Genmab A/S

24/06/2024

3:59:09 PM

1,816.0000

16

AQEU

Genmab A/S

24/06/2024

3:59:25 PM

1,816.0000

2

AQEU

Genmab A/S

24/06/2024

3:59:25 PM

1,816.0000

16

AQEU

Genmab A/S

24/06/2024

3:59:25 PM

1,816.0000

2

AQEU

Genmab A/S

24/06/2024

3:59:25 PM

1,816.0000

20

AQEU

Genmab A/S

24/06/2024

3:59:46 PM

1,815.0000

42

CEUX

Genmab A/S

24/06/2024

3:59:46 PM

1,815.0000

6

AQEU

Genmab A/S

24/06/2024

3:59:46 PM

1,815.0000

10

AQEU

Genmab A/S

24/06/2024

3:59:46 PM

1,815.0000

7

TQEX

Genmab A/S

24/06/2024

3:59:46 PM

1,815.0000

11

TQEX

Genmab A/S

24/06/2024

3:59:46 PM

1,815.0000

32

XCSE

Genmab A/S

24/06/2024

3:59:46 PM

1,815.0000

14

XCSE

Genmab A/S

24/06/2024

3:59:46 PM

1,815.0000

4

XCSE

Genmab A/S

24/06/2024

3:59:46 PM

1,815.0000

17

XCSE

Genmab A/S

24/06/2024

3:59:46 PM

1,815.0000

34

XCSE

Genmab A/S

24/06/2024

3:59:46 PM

1,815.0000

24

XCSE

Genmab A/S

24/06/2024

3:59:47 PM

1,814.5000

6

TQEX

Genmab A/S

24/06/2024

3:59:47 PM

1,814.5000

38

XCSE

Genmab A/S

24/06/2024

3:59:58 PM

1,815.0000

26

XCSE

Genmab A/S

24/06/2024

4:00:29 PM

1,814.5000

11

XCSE

Genmab A/S

24/06/2024

4:00:29 PM

1,814.5000

30

XCSE

Genmab A/S

24/06/2024

4:00:29 PM

1,814.5000

30

XCSE

Genmab A/S

24/06/2024

4:00:29 PM

1,814.5000

5

TQEX

Genmab A/S

24/06/2024

4:00:30 PM

1,814.5000

17

XCSE

Genmab A/S

24/06/2024

4:00:30 PM

1,814.5000

7

XCSE

Genmab A/S

24/06/2024

4:00:30 PM

1,814.5000

17

XCSE

Genmab A/S

24/06/2024

4:00:30 PM

1,814.5000

7

XCSE

Genmab A/S

24/06/2024

4:00:30 PM

1,814.5000

41

XCSE

Genmab A/S

24/06/2024

4:00:30 PM

1,814.5000

5

TQEX

Genmab A/S

24/06/2024

4:00:30 PM

1,814.5000

41

XCSE

Genmab A/S

24/06/2024

4:00:30 PM

1,814.5000

41

XCSE

Genmab A/S

24/06/2024

4:00:30 PM

1,814.5000

14

XCSE

Genmab A/S

24/06/2024

4:00:30 PM

1,814.5000

6

AQEU

Genmab A/S

24/06/2024

4:00:30 PM

1,814.5000

5

TQEX

Genmab A/S

24/06/2024

4:00:30 PM

1,814.0000

30

XCSE

Genmab A/S

24/06/2024

4:00:30 PM

1,814.5000

39

XCSE

Genmab A/S

24/06/2024

4:03:38 PM

1,812.5000

13

XCSE

Genmab A/S

24/06/2024

4:03:38 PM

1,812.5000

116

XCSE

Genmab A/S

24/06/2024

4:03:38 PM

1,812.5000

3

AQEU

Genmab A/S

24/06/2024

4:03:38 PM

1,812.5000

3

AQEU

Genmab A/S

24/06/2024

4:03:38 PM

1,812.5000

3

AQEU

43

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

4:03:38 PM

1,812.5000

3

AQEU

Genmab A/S

24/06/2024

4:03:38 PM

1,812.5000

3

AQEU

Genmab A/S

24/06/2024

4:03:38 PM

1,812.5000

3

AQEU

Genmab A/S

24/06/2024

4:03:38 PM

1,812.5000

17

AQEU

Genmab A/S

24/06/2024

4:03:38 PM

1,812.5000

3

AQEU

Genmab A/S

24/06/2024

4:03:38 PM

1,812.5000

3

AQEU

Genmab A/S

24/06/2024

4:03:38 PM

1,812.5000

3

AQEU

Genmab A/S

24/06/2024

4:03:38 PM

1,812.5000

5

TQEX

Genmab A/S

24/06/2024

4:03:38 PM

1,812.5000

5

TQEX

Genmab A/S

24/06/2024

4:03:38 PM

1,812.5000

5

TQEX

Genmab A/S

24/06/2024

4:03:38 PM

1,812.5000

5

TQEX

Genmab A/S

24/06/2024

4:03:38 PM

1,812.5000

5

TQEX

Genmab A/S

24/06/2024

4:03:38 PM

1,812.5000

21

TQEX

Genmab A/S

24/06/2024

4:03:38 PM

1,812.5000

13

XCSE

Genmab A/S

24/06/2024

4:03:38 PM

1,812.5000

13

XCSE

Genmab A/S

24/06/2024

4:03:38 PM

1,812.5000

30

XCSE

Genmab A/S

24/06/2024

4:03:38 PM

1,812.5000

13

XCSE

Genmab A/S

24/06/2024

4:03:38 PM

1,812.5000

13

XCSE

Genmab A/S

24/06/2024

4:03:38 PM

1,812.5000

13

XCSE

Genmab A/S

24/06/2024

4:03:38 PM

1,812.5000

30

XCSE

Genmab A/S

24/06/2024

4:03:38 PM

1,812.5000

16

AQEU

Genmab A/S

24/06/2024

4:03:38 PM

1,812.5000

2

AQEU

Genmab A/S

24/06/2024

4:03:38 PM

1,812.5000

1

TQEX

Genmab A/S

24/06/2024

4:08:22 PM

1,814.5000

11

AQEU

Genmab A/S

24/06/2024

4:08:22 PM

1,814.5000

34

AQEU

Genmab A/S

24/06/2024

4:08:22 PM

1,814.5000

11

AQEU

Genmab A/S

24/06/2024

4:08:22 PM

1,814.5000

22

AQEU

Genmab A/S

24/06/2024

4:08:22 PM

1,814.5000

37

XCSE

Genmab A/S

24/06/2024

4:08:22 PM

1,814.5000

82

XCSE

Genmab A/S

24/06/2024

4:08:22 PM

1,814.5000

28

XCSE

Genmab A/S

24/06/2024

4:08:22 PM

1,814.5000

50

XCSE

Genmab A/S

24/06/2024

4:08:22 PM

1,814.5000

4

XCSE

Genmab A/S

24/06/2024

4:08:22 PM

1,814.5000

96

XCSE

Genmab A/S

24/06/2024

4:08:22 PM

1,814.5000

18

XCSE

Genmab A/S

24/06/2024

4:08:22 PM

1,814.5000

13

XCSE

Genmab A/S

24/06/2024

4:09:44 PM

1,815.0000

6

TQEX

Genmab A/S

24/06/2024

4:09:44 PM

1,815.0000

39

XCSE

Genmab A/S

24/06/2024

4:09:44 PM

1,815.0000

18

XCSE

Genmab A/S

24/06/2024

4:09:44 PM

1,815.0000

50

XCSE

Genmab A/S

24/06/2024

4:09:44 PM

1,815.0000

34

XCSE

Genmab A/S

24/06/2024

4:09:44 PM

1,814.5000

34

XCSE

Genmab A/S

24/06/2024

4:09:44 PM

1,814.5000

2

XCSE

Genmab A/S

24/06/2024

4:09:44 PM

1,814.5000

1

XCSE

Genmab A/S

24/06/2024

4:09:44 PM

1,814.5000

39

XCSE

Genmab A/S

24/06/2024

4:09:44 PM

1,814.5000

2

XCSE

Genmab A/S

24/06/2024

4:09:44 PM

1,814.5000

1

XCSE

Genmab A/S

24/06/2024

4:09:44 PM

1,814.5000

1

XCSE

Genmab A/S

24/06/2024

4:09:45 PM

1,814.5000

6

TQEX

44

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

4:09:45 PM

1,814.5000

9

XCSE

Genmab A/S

24/06/2024

4:09:46 PM

1,814.5000

50

XCSE

Genmab A/S

24/06/2024

4:12:50 PM

1,811.5000

5

TQEX

Genmab A/S

24/06/2024

4:12:50 PM

1,811.5000

30

XCSE

Genmab A/S

24/06/2024

4:12:50 PM

1,811.5000

5

TQEX

Genmab A/S

24/06/2024

4:12:50 PM

1,811.5000

4

AQEU

Genmab A/S

24/06/2024

4:12:50 PM

1,811.5000

5

TQEX

Genmab A/S

24/06/2024

4:13:41 PM

1,813.0000

5

TQEX

Genmab A/S

24/06/2024

4:13:41 PM

1,813.0000

21

XCSE

Genmab A/S

24/06/2024

4:13:41 PM

1,813.0000

21

XCSE

Genmab A/S

24/06/2024

4:13:41 PM

1,813.0000

21

XCSE

Genmab A/S

24/06/2024

4:13:41 PM

1,813.0000

10

XCSE

Genmab A/S

24/06/2024

4:13:41 PM

1,813.0000

5

TQEX

Genmab A/S

24/06/2024

4:13:41 PM

1,813.0000

5

TQEX

Genmab A/S

24/06/2024

4:13:41 PM

1,813.0000

21

XCSE

Genmab A/S

24/06/2024

4:13:41 PM

1,813.0000

5

TQEX

Genmab A/S

24/06/2024

4:13:42 PM

1,813.0000

5

TQEX

Genmab A/S

24/06/2024

4:13:42 PM

1,813.0000

6

XCSE

Genmab A/S

24/06/2024

4:13:42 PM

1,813.0000

5

TQEX

Genmab A/S

24/06/2024

4:13:42 PM

1,813.0000

16

XCSE

Genmab A/S

24/06/2024

4:15:30 PM

1,812.5000

7

XCSE

Genmab A/S

24/06/2024

4:15:30 PM

1,812.5000

37

XCSE

Genmab A/S

24/06/2024

4:15:30 PM

1,812.5000

44

XCSE

Genmab A/S

24/06/2024

4:15:31 PM

1,812.5000

35

XCSE

Genmab A/S

24/06/2024

4:17:17 PM

1,811.5000

8

XCSE

Genmab A/S

24/06/2024

4:17:17 PM

1,811.5000

16

XCSE

Genmab A/S

24/06/2024

4:17:17 PM

1,811.5000

5

TQEX

Genmab A/S

24/06/2024

4:17:17 PM

1,811.5000

5

TQEX

Genmab A/S

24/06/2024

4:17:19 PM

1,811.5000

21

XCSE

Genmab A/S

24/06/2024

4:18:59 PM

1,811.5000

37

XCSE

Genmab A/S

24/06/2024

4:19:02 PM

1,811.0000

7

XCSE

Genmab A/S

24/06/2024

4:19:02 PM

1,811.0000

46

XCSE

Genmab A/S

24/06/2024

4:19:02 PM

1,811.0000

149

XCSE

Genmab A/S

24/06/2024

4:19:02 PM

1,811.0000

19

AQEU

Genmab A/S

24/06/2024

4:19:02 PM

1,811.0000

53

XCSE

Genmab A/S

24/06/2024

4:20:37 PM

1,808.5000

5

TQEX

Genmab A/S

24/06/2024

4:20:37 PM

1,808.5000

34

XCSE

Genmab A/S

24/06/2024

4:20:37 PM

1,808.5000

5

TQEX

Genmab A/S

24/06/2024

4:20:37 PM

1,808.5000

8

TQEX

Genmab A/S

24/06/2024

4:20:37 PM

1,808.5000

5

AQEU

Genmab A/S

24/06/2024

4:20:37 PM

1,808.5000

2

AQEU

Genmab A/S

24/06/2024

4:20:37 PM

1,808.5000

4

TQEX

Genmab A/S

24/06/2024

4:20:37 PM

1,808.5000

1

TQEX

Genmab A/S

24/06/2024

4:20:37 PM

1,808.5000

34

XCSE

Genmab A/S

24/06/2024

4:20:37 PM

1,808.5000

34

XCSE

Genmab A/S

24/06/2024

4:20:37 PM

1,808.5000

34

XCSE

Genmab A/S

24/06/2024

4:20:37 PM

1,808.5000

5

TQEX

Genmab A/S

24/06/2024

4:20:37 PM

1,808.5000

34

XCSE

45

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

4:20:37 PM

1,808.5000

3

AQEU

Genmab A/S

24/06/2024

4:20:37 PM

1,808.5000

3

AQEU

Genmab A/S

24/06/2024

4:20:37 PM

1,808.5000

2

AQEU

Genmab A/S

24/06/2024

4:20:37 PM

1,808.5000

5

AQEU

Genmab A/S

24/06/2024

4:20:37 PM

1,808.5000

19

AQEU

Genmab A/S

24/06/2024

4:20:37 PM

1,808.5000

5

AQEU

Genmab A/S

24/06/2024

4:20:37 PM

1,808.5000

16

AQEU

Genmab A/S

24/06/2024

4:20:37 PM

1,808.5000

3

AQEU

Genmab A/S

24/06/2024

4:20:37 PM

1,808.0000

3

XCSE

Genmab A/S

24/06/2024

4:20:37 PM

1,808.0000

44

XCSE

Genmab A/S

24/06/2024

4:20:37 PM

1,808.0000

21

XCSE

Genmab A/S

24/06/2024

4:20:37 PM

1,808.0000

10

XCSE

Genmab A/S

24/06/2024

4:20:38 PM

1,808.0000

37

XCSE

Genmab A/S

24/06/2024

4:20:38 PM

1,808.0000

21

XCSE

Genmab A/S

24/06/2024

4:20:38 PM

1,808.0000

6

AQEU

Genmab A/S

24/06/2024

4:20:38 PM

1,808.0000

1

XCSE

Genmab A/S

24/06/2024

4:20:38 PM

1,808.0000

10

XCSE

Genmab A/S

24/06/2024

4:20:39 PM

1,808.0000

6

AQEU

Genmab A/S

24/06/2024

4:20:39 PM

1,808.0000

6

AQEU

Genmab A/S

24/06/2024

4:20:39 PM

1,808.0000

15

XCSE

Genmab A/S

24/06/2024

4:25:22 PM

1,811.5000

21

XCSE

Genmab A/S

24/06/2024

4:25:22 PM

1,811.5000

50

XCSE

Genmab A/S

24/06/2024

4:25:22 PM

1,811.5000

50

XCSE

Genmab A/S

24/06/2024

4:25:22 PM

1,811.5000

12

XCSE

Genmab A/S

24/06/2024

4:25:23 PM

1,811.5000

5

TQEX

Genmab A/S

24/06/2024

4:25:23 PM

1,811.5000

5

TQEX

Genmab A/S

24/06/2024

4:25:23 PM

1,811.5000

5

TQEX

Genmab A/S

24/06/2024

4:25:23 PM

1,811.5000

21

XCSE

Genmab A/S

24/06/2024

4:28:14 PM

1,810.5000

18

XCSE

Genmab A/S

24/06/2024

4:28:14 PM

1,810.5000

32

XCSE

Genmab A/S

24/06/2024

4:28:14 PM

1,810.5000

5

TQEX

Genmab A/S

24/06/2024

4:28:14 PM

1,810.5000

18

XCSE

Genmab A/S

24/06/2024

4:28:14 PM

1,810.5000

3

AQEU

Genmab A/S

24/06/2024

4:28:14 PM

1,810.5000

1

AQEU

Genmab A/S

24/06/2024

4:28:14 PM

1,810.5000

5

TQEX

Genmab A/S

24/06/2024

4:28:14 PM

1,810.5000

3

TQEX

Genmab A/S

24/06/2024

4:28:14 PM

1,810.5000

18

XCSE

Genmab A/S

24/06/2024

4:28:14 PM

1,810.5000

13

XCSE

Genmab A/S

24/06/2024

4:28:15 PM

1,810.5000

5

TQEX

Genmab A/S

24/06/2024

4:28:15 PM

1,810.5000

18

XCSE

Genmab A/S

24/06/2024

4:28:16 PM

1,810.5000

3

XCSE

Genmab A/S

24/06/2024

4:29:14 PM

1,810.0000

65

XCSE

Genmab A/S

24/06/2024

4:29:14 PM

1,810.0000

46

XCSE

Genmab A/S

24/06/2024

4:29:14 PM

1,810.0000

7

XCSE

Genmab A/S

24/06/2024

4:29:37 PM

1,810.0000

5

TQEX

Genmab A/S

24/06/2024

4:29:37 PM

1,810.0000

41

XCSE

Genmab A/S

24/06/2024

4:31:11 PM

1,810.0000

11

AQEU

Genmab A/S

24/06/2024

4:31:11 PM

1,810.0000

11

TQEX

46

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

4:31:11 PM

1,810.0000

5

XCSE

Genmab A/S

24/06/2024

4:31:11 PM

1,810.0000

12

XCSE

Genmab A/S

24/06/2024

4:31:16 PM

1,809.0000

3

AQEU

Genmab A/S

24/06/2024

4:31:16 PM

1,809.0000

19

XCSE

Genmab A/S

24/06/2024

4:31:16 PM

1,809.0000

19

XCSE

Genmab A/S

24/06/2024

4:31:16 PM

1,809.0000

28

XCSE

Genmab A/S

24/06/2024

4:31:16 PM

1,809.0000

3

AQEU

Genmab A/S

24/06/2024

4:31:16 PM

1,809.0000

16

XCSE

Genmab A/S

24/06/2024

4:31:16 PM

1,809.0000

3

AQEU

Genmab A/S

24/06/2024

4:31:16 PM

1,809.0000

12

AQEU

Genmab A/S

24/06/2024

4:31:16 PM

1,809.0000

3

XCSE

Genmab A/S

24/06/2024

4:31:16 PM

1,809.0000

94

XCSE

Genmab A/S

24/06/2024

4:31:16 PM

1,809.0000

3

AQEU

Genmab A/S

24/06/2024

4:31:16 PM

1,809.0000

19

XCSE

Genmab A/S

24/06/2024

4:31:16 PM

1,809.0000

19

XCSE

Genmab A/S

24/06/2024

4:31:16 PM

1,809.0000

19

XCSE

Genmab A/S

24/06/2024

4:31:16 PM

1,809.0000

19

XCSE

Genmab A/S

24/06/2024

4:31:17 PM

1,809.0000

19

XCSE

Genmab A/S

24/06/2024

4:34:05 PM

1,809.0000

33

AQEU

Genmab A/S

24/06/2024

4:34:19 PM

1,809.0000

39

XCSE

Genmab A/S

24/06/2024

4:34:20 PM

1,808.5000

19

AQEU

Genmab A/S

24/06/2024

4:34:20 PM

1,808.5000

58

AQEU

Genmab A/S

24/06/2024

4:34:20 PM

1,808.5000

21

TQEX

Genmab A/S

24/06/2024

4:34:20 PM

1,808.5000

91

XCSE

Genmab A/S

24/06/2024

4:34:20 PM

1,808.5000

61

XCSE

Genmab A/S

24/06/2024

4:34:20 PM

1,808.5000

459

XCSE

Genmab A/S

24/06/2024

4:34:20 PM

1,808.0000

2

AQEU

Genmab A/S

24/06/2024

4:34:20 PM

1,808.0000

4

AQEU

Genmab A/S

24/06/2024

4:34:20 PM

1,808.0000

43

XCSE

Genmab A/S

24/06/2024

4:34:20 PM

1,808.0000

27

XCSE

Genmab A/S

24/06/2024

4:34:20 PM

1,808.0000

38

XCSE

Genmab A/S

24/06/2024

4:34:20 PM

1,807.5000

48

XCSE

Genmab A/S

24/06/2024

4:34:20 PM

1,807.5000

48

XCSE

Genmab A/S

24/06/2024

4:34:20 PM

1,807.5000

7

XCSE

Genmab A/S

24/06/2024

4:34:20 PM

1,807.5000

48

XCSE

Genmab A/S

24/06/2024

4:34:20 PM

1,807.5000

50

XCSE

Genmab A/S

24/06/2024

4:34:20 PM

1,807.5000

48

XCSE

Genmab A/S

24/06/2024

4:34:20 PM

1,807.5000

28

XCSE

Genmab A/S

24/06/2024

4:34:20 PM

1,807.5000

20

XCSE

Genmab A/S

24/06/2024

4:34:20 PM

1,807.5000

9

XCSE

Genmab A/S

24/06/2024

4:38:34 PM

1,808.0000

3

AQEU

Genmab A/S

24/06/2024

4:38:34 PM

1,808.0000

21

XCSE

Genmab A/S

24/06/2024

4:38:34 PM

1,808.0000

11

XCSE

Genmab A/S

24/06/2024

4:38:34 PM

1,808.0000

3

AQEU

Genmab A/S

24/06/2024

4:38:34 PM

1,808.0000

6

AQEU

Genmab A/S

24/06/2024

4:38:34 PM

1,808.0000

10

XCSE

Genmab A/S

24/06/2024

4:38:34 PM

1,808.0000

141

XCSE

Genmab A/S

24/06/2024

4:40:24 PM

1,808.5000

39

XCSE

47

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

4:40:24 PM

1,808.5000

46

XCSE

Genmab A/S

24/06/2024

4:40:24 PM

1,808.5000

39

XCSE

Genmab A/S

24/06/2024

4:40:24 PM

1,808.5000

46

XCSE

Genmab A/S

24/06/2024

4:40:24 PM

1,808.5000

175

XCSE

Genmab A/S

24/06/2024

4:40:25 PM

1,808.5000

39

XCSE

Genmab A/S

24/06/2024

4:40:25 PM

1,808.5000

46

XCSE

Genmab A/S

24/06/2024

4:44:01 PM

1,809.0000

18

AQEU

Genmab A/S

24/06/2024

4:44:01 PM

1,809.0000

1

AQEU

Genmab A/S

24/06/2024

4:44:01 PM

1,809.0000

139

XCSE

Genmab A/S

24/06/2024

4:44:01 PM

1,809.0000

34

XCSE

Genmab A/S

24/06/2024

4:44:01 PM

1,809.0000

139

XCSE

Genmab A/S

24/06/2024

4:45:50 PM

1,809.5000

15

TQEX

Genmab A/S

24/06/2024

4:45:53 PM

1,809.5000

9

TQEX

Genmab A/S

24/06/2024

4:45:53 PM

1,809.5000

2

TQEX

Genmab A/S

24/06/2024

4:45:53 PM

1,808.5000

10

AQEU

Genmab A/S

24/06/2024

4:45:53 PM

1,808.5000

19

AQEU

Genmab A/S

24/06/2024

4:45:53 PM

1,808.5000

51

XCSE

Genmab A/S

24/06/2024

4:45:56 PM

1,808.5000

10

AQEU

Genmab A/S

24/06/2024

4:45:56 PM

1,808.5000

19

AQEU

Genmab A/S

24/06/2024

4:45:56 PM

1,808.5000

1

AQEU

Genmab A/S

24/06/2024

4:45:56 PM

1,808.5000

23

XCSE

Genmab A/S

24/06/2024

4:45:56 PM

1,808.5000

150

XCSE

Genmab A/S

24/06/2024

4:45:56 PM

1,808.5000

5

XCSE

Genmab A/S

24/06/2024

4:46:41 PM

1,808.5000

35

AQEU

Genmab A/S

24/06/2024

4:46:41 PM

1,808.5000

3

AQEU

Genmab A/S

24/06/2024

4:46:41 PM

1,808.5000

130

XCSE

Genmab A/S

24/06/2024

4:46:41 PM

1,808.5000

148

XCSE

Genmab A/S

24/06/2024

4:46:41 PM

1,808.5000

23

XCSE

Genmab A/S

24/06/2024

4:46:41 PM

1,808.5000

23

XCSE

Genmab A/S

24/06/2024

4:46:42 PM

1,808.5000

23

XCSE

Genmab A/S

24/06/2024

4:48:03 PM

1,808.0000

40

XCSE

Genmab A/S

24/06/2024

4:48:15 PM

1,808.5000

24

AQEU

Genmab A/S

24/06/2024

4:48:15 PM

1,808.5000

32

XCSE

Genmab A/S

24/06/2024

4:48:16 PM

1,808.5000

1

XCSE

Genmab A/S

24/06/2024

4:48:31 PM

1,808.5000

33

AQEU

Genmab A/S

24/06/2024

4:48:37 PM

1,808.5000

34

XCSE

Genmab A/S

24/06/2024

4:48:44 PM

1,808.5000

17

CEUX

Genmab A/S

24/06/2024

4:48:44 PM

1,808.5000

17

CEUX

Genmab A/S

24/06/2024

4:49:03 PM

1,809.5000

2

AQEU

Genmab A/S

24/06/2024

4:49:03 PM

1,809.5000

19

AQEU

Genmab A/S

24/06/2024

4:49:11 PM

1,809.5000

19

AQEU

Genmab A/S

24/06/2024

4:49:11 PM

1,809.5000

2

AQEU

Genmab A/S

24/06/2024

4:49:11 PM

1,809.5000

16

AQEU

Genmab A/S

24/06/2024

4:49:11 PM

1,809.5000

8

AQEU

Genmab A/S

24/06/2024

4:49:20 PM

1,809.5000

16

AQEU

Genmab A/S

24/06/2024

4:49:20 PM

1,809.5000

2

AQEU

Genmab A/S

24/06/2024

4:49:20 PM

1,809.5000

19

AQEU

Genmab A/S

24/06/2024

4:49:28 PM

1,809.5000

16

AQEU

48

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

4:49:28 PM

1,809.5000

19

AQEU

Genmab A/S

24/06/2024

4:49:28 PM

1,809.5000

2

AQEU

Genmab A/S

24/06/2024

4:49:36 PM

1,809.5000

16

AQEU

Genmab A/S

24/06/2024

4:49:36 PM

1,809.5000

2

AQEU

Genmab A/S

24/06/2024

4:49:36 PM

1,809.5000

19

AQEU

Genmab A/S

24/06/2024

4:49:41 PM

1,809.5000

2

AQEU

Genmab A/S

24/06/2024

4:49:41 PM

1,809.5000

16

AQEU

Genmab A/S

24/06/2024

4:49:41 PM

1,809.5000

19

AQEU

Genmab A/S

24/06/2024

4:49:46 PM

1,809.5000

2

AQEU

Genmab A/S

24/06/2024

4:49:46 PM

1,809.5000

19

AQEU

Genmab A/S

24/06/2024

4:49:46 PM

1,809.5000

16

AQEU

Genmab A/S

24/06/2024

4:49:52 PM

1,809.5000

16

AQEU

Genmab A/S

24/06/2024

4:49:52 PM

1,809.5000

2

AQEU

Genmab A/S

24/06/2024

4:49:52 PM

1,809.5000

19

AQEU

Genmab A/S

24/06/2024

4:50:00 PM

1,809.5000

16

AQEU

Genmab A/S

24/06/2024

4:50:00 PM

1,809.5000

2

AQEU

Genmab A/S

24/06/2024

4:50:00 PM

1,809.5000

19

AQEU

Genmab A/S

24/06/2024

4:50:02 PM

1,808.5000

20

XCSE

Genmab A/S

24/06/2024

4:50:02 PM

1,808.5000

37

XCSE

Genmab A/S

24/06/2024

4:50:03 PM

1,808.5000

30

XCSE

Genmab A/S

24/06/2024

4:50:03 PM

1,808.5000

27

XCSE

Genmab A/S

24/06/2024

4:50:03 PM

1,808.5000

27

XCSE

Genmab A/S

24/06/2024

4:50:03 PM

1,808.5000

30

XCSE

Genmab A/S

24/06/2024

4:50:03 PM

1,808.5000

16

XCSE

Genmab A/S

24/06/2024

4:50:03 PM

1,808.5000

41

XCSE

Genmab A/S

24/06/2024

4:50:03 PM

1,808.5000

57

XCSE

Genmab A/S

24/06/2024

4:50:06 PM

1,808.5000

31

XCSE

Genmab A/S

24/06/2024

4:50:06 PM

1,808.5000

26

XCSE

Genmab A/S

24/06/2024

4:50:44 PM

1,809.0000

33

XCSE

Genmab A/S

24/06/2024

4:50:44 PM

1,809.0000

50

XCSE

Genmab A/S

24/06/2024

4:50:44 PM

1,809.0000

50

XCSE

Genmab A/S

24/06/2024

4:50:44 PM

1,809.0000

32

XCSE

Genmab A/S

24/06/2024

4:50:44 PM

1,809.0000

133

XCSE

Genmab A/S

24/06/2024

4:50:45 PM

1,809.0000

20

XCSE

Genmab A/S

24/06/2024

4:50:45 PM

1,809.0000

58

XCSE

Genmab A/S

24/06/2024

4:50:45 PM

1,809.0000

30

XCSE

Genmab A/S

24/06/2024

4:50:45 PM

1,809.0000

57

XCSE

Genmab A/S

24/06/2024

4:52:36 PM

1,809.5000

34

CEUX

Genmab A/S

24/06/2024

4:52:43 PM

1,809.5000

12

TQEX

Genmab A/S

24/06/2024

4:54:17 PM

1,809.5000

28

XCSE

Genmab A/S

24/06/2024

4:54:17 PM

1,809.5000

17

XCSE

Genmab A/S

24/06/2024

4:54:17 PM

1,809.5000

11

XCSE

Genmab A/S

24/06/2024

4:54:17 PM

1,809.5000

24

XCSE

Genmab A/S

24/06/2024

4:54:17 PM

1,809.5000

22

XCSE

Genmab A/S

24/06/2024

4:54:17 PM

1,809.5000

29

XCSE

Genmab A/S

24/06/2024

4:54:17 PM

1,809.5000

21

XCSE

Genmab A/S

24/06/2024

4:54:17 PM

1,809.5000

10

XCSE

Genmab A/S

24/06/2024

4:54:17 PM

1,809.5000

25

XCSE

49

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

24/06/2024

4:54:17 PM

1,809.5000

39

XCSE

Genmab A/S

24/06/2024

4:54:17 PM

1,809.5000

18

AQEU

Genmab A/S

24/06/2024

4:54:17 PM

1,809.5000

2

AQEU

Genmab A/S

24/06/2024

4:54:17 PM

1,809.5000

16

AQEU

Genmab A/S

24/06/2024

4:54:17 PM

1,809.0000

24

XCSE

Genmab A/S

24/06/2024

4:54:20 PM

1,809.7500

44

CEUX

Genmab A/S

24/06/2024

4:54:46 PM

1,809.5000

8

TQEX

Genmab A/S

24/06/2024

4:54:48 PM

1,809.5000

1

AQEU

Genmab A/S

24/06/2024

4:54:50 PM

1,810.0000

17

XCSE

Genmab A/S

24/06/2024

4:54:50 PM

1,810.0000

217

XCSE

Genmab A/S

24/06/2024

4:54:50 PM

1,809.5000

20

XCSE

Genmab A/S

24/06/2024

4:54:50 PM

1,809.5000

2

XCSE

Genmab A/S

24/06/2024

4:54:51 PM

1,809.5000

2

XCSE

Genmab A/S

24/06/2024

4:54:54 PM

1,809.5000

4

XCSE

Genmab A/S

24/06/2024

4:54:54 PM

1,809.5000

5

XCSE

Genmab A/S

24/06/2024

4:54:54 PM

1,809.5000

8

XCSE

Genmab A/S

24/06/2024

4:54:54 PM

1,809.5000

6

XCSE

Genmab A/S

25/06/2024

9:00:01 AM

1,793.5000

22

XCSE

Genmab A/S

25/06/2024

9:00:03 AM

1,793.5000

22

XCSE

Genmab A/S

25/06/2024

9:00:03 AM

1,793.5000

66

XCSE

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

18

XCSE

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

22

XCSE

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

18

XCSE

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

22

XCSE

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

17

CEUX

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

20

CEUX

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

17

CEUX

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

20

CEUX

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

17

CEUX

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

20

CEUX

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

9

CEUX

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

20

CEUX

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

18

CEUX

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

2

AQEU

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

3

AQEU

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

2

AQEU

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

3

AQEU

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

2

AQEU

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

3

AQEU

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

2

AQEU

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

3

AQEU

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

5

TQEX

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

5

TQEX

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

5

TQEX

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

5

TQEX

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

5

TQEX

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

5

TQEX

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

5

TQEX

50

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

5

TQEX

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

5

TQEX

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

5

TQEX

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

5

TQEX

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

5

TQEX

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

5

TQEX

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

5

TQEX

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

5

TQEX

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

5

TQEX

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

5

TQEX

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

42

CEUX

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

27

CEUX

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

3

AQEU

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

3

AQEU

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

3

AQEU

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

3

AQEU

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

3

AQEU

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

50

XCSE

Genmab A/S

25/06/2024

9:00:36 AM

1,792.5000

29

XCSE

Genmab A/S

25/06/2024

9:01:10 AM

1,789.0000

44

XCSE

Genmab A/S

25/06/2024

9:01:10 AM

1,789.0000

38

XCSE

Genmab A/S

25/06/2024

9:01:10 AM

1,789.0000

14

XCSE

Genmab A/S

25/06/2024

9:03:14 AM

1,802.0000

41

XCSE

Genmab A/S

25/06/2024

9:03:14 AM

1,802.0000

67

XCSE

Genmab A/S

25/06/2024

9:03:14 AM

1,802.0000

69

XCSE

Genmab A/S

25/06/2024

9:03:14 AM

1,802.5000

37

XCSE

Genmab A/S

25/06/2024

9:03:43 AM

1,799.5000

34

XCSE

Genmab A/S

25/06/2024

9:03:43 AM

1,799.5000

11

XCSE

Genmab A/S

25/06/2024

9:03:43 AM

1,799.5000

11

XCSE

Genmab A/S

25/06/2024

9:05:03 AM

1,802.5000

68

XCSE

Genmab A/S

25/06/2024

9:07:29 AM

1,805.0000

40

XCSE

Genmab A/S

25/06/2024

9:07:29 AM

1,805.0000

35

XCSE

Genmab A/S

25/06/2024

9:07:29 AM

1,805.0000

36

CEUX

Genmab A/S

25/06/2024

9:07:29 AM

1,805.0000

36

CEUX

Genmab A/S

25/06/2024

9:07:29 AM

1,805.0000

6

AQEU

Genmab A/S

25/06/2024

9:07:29 AM

1,805.0000

37

AQEU

Genmab A/S

25/06/2024

9:07:29 AM

1,805.0000

5

TQEX

Genmab A/S

25/06/2024

9:07:29 AM

1,805.0000

5

TQEX

Genmab A/S

25/06/2024

9:07:29 AM

1,805.0000

2

TQEX

Genmab A/S

25/06/2024

9:07:29 AM

1,805.0000

5

TQEX

Genmab A/S

25/06/2024

9:07:29 AM

1,805.0000

6

TQEX

Genmab A/S

25/06/2024

9:07:29 AM

1,805.0000

5

TQEX

Genmab A/S

25/06/2024

9:07:29 AM

1,805.0000

40

XCSE

Genmab A/S

25/06/2024

9:07:29 AM

1,805.0000

49

XCSE

Genmab A/S

25/06/2024

9:07:29 AM

1,805.0000

5

TQEX

Genmab A/S

25/06/2024

9:07:31 AM

1,803.0000

13

AQEU

Genmab A/S

25/06/2024

9:07:51 AM

1,804.0000

42

CEUX

Genmab A/S

25/06/2024

9:07:51 AM

1,804.0000

41

CEUX

51

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

9:07:51 AM

1,804.0000

7

TQEX

Genmab A/S

25/06/2024

9:07:51 AM

1,804.0000

7

TQEX

Genmab A/S

25/06/2024

9:07:51 AM

1,804.0000

7

TQEX

Genmab A/S

25/06/2024

9:07:51 AM

1,804.0000

7

TQEX

Genmab A/S

25/06/2024

9:07:51 AM

1,804.0000

46

XCSE

Genmab A/S

25/06/2024

9:07:51 AM

1,804.0000

45

XCSE

Genmab A/S

25/06/2024

9:07:51 AM

1,804.0000

18

XCSE

Genmab A/S

25/06/2024

9:08:13 AM

1,804.0000

4

XCSE

Genmab A/S

25/06/2024

9:08:13 AM

1,804.0000

27

XCSE

Genmab A/S

25/06/2024

9:08:13 AM

1,804.0000

4

XCSE

Genmab A/S

25/06/2024

9:08:13 AM

1,804.0000

9

XCSE

Genmab A/S

25/06/2024

9:08:13 AM

1,804.0000

22

XCSE

Genmab A/S

25/06/2024

9:08:13 AM

1,804.0000

31

XCSE

Genmab A/S

25/06/2024

9:08:13 AM

1,804.0000

30

XCSE

Genmab A/S

25/06/2024

9:08:30 AM

1,800.5000

12

XCSE

Genmab A/S

25/06/2024

9:09:30 AM

1,802.0000

21

CEUX

Genmab A/S

25/06/2024

9:09:30 AM

1,802.0000

32

CEUX

Genmab A/S

25/06/2024

9:09:30 AM

1,802.0000

46

CEUX

Genmab A/S

25/06/2024

9:09:30 AM

1,802.0000

8

AQEU

Genmab A/S

25/06/2024

9:09:30 AM

1,802.0000

7

AQEU

Genmab A/S

25/06/2024

9:09:30 AM

1,802.0000

7

TQEX

Genmab A/S

25/06/2024

9:09:30 AM

1,802.0000

8

TQEX

Genmab A/S

25/06/2024

9:09:30 AM

1,802.0000

59

XCSE

Genmab A/S

25/06/2024

9:09:30 AM

1,802.0000

51

XCSE

Genmab A/S

25/06/2024

9:09:50 AM

1,801.0000

15

XCSE

Genmab A/S

25/06/2024

9:09:50 AM

1,801.0000

30

XCSE

Genmab A/S

25/06/2024

9:09:50 AM

1,801.0000

30

XCSE

Genmab A/S

25/06/2024

9:09:50 AM

1,801.0000

10

XCSE

Genmab A/S

25/06/2024

9:09:50 AM

1,801.0000

5

XCSE

Genmab A/S

25/06/2024

9:09:50 AM

1,801.0000

5

XCSE

Genmab A/S

25/06/2024

9:09:50 AM

1,801.0000

10

XCSE

Genmab A/S

25/06/2024

9:10:15 AM

1,800.0000

6

CEUX

Genmab A/S

25/06/2024

9:10:38 AM

1,800.5000

26

XCSE

Genmab A/S

25/06/2024

9:10:38 AM

1,800.5000

23

XCSE

Genmab A/S

25/06/2024

9:10:38 AM

1,800.5000

3

XCSE

Genmab A/S

25/06/2024

9:10:38 AM

1,800.5000

26

XCSE

Genmab A/S

25/06/2024

9:10:39 AM

1,800.5000

20

XCSE

Genmab A/S

25/06/2024

9:11:20 AM

1,801.0000

19

XCSE

Genmab A/S

25/06/2024

9:11:20 AM

1,801.0000

5

XCSE

Genmab A/S

25/06/2024

9:12:39 AM

1,803.0000

37

CEUX

Genmab A/S

25/06/2024

9:12:52 AM

1,803.0000

34

CEUX

Genmab A/S

25/06/2024

9:12:54 AM

1,802.5000

23

CEUX

Genmab A/S

25/06/2024

9:12:54 AM

1,802.5000

8

CEUX

Genmab A/S

25/06/2024

9:12:54 AM

1,802.5000

2

CEUX

Genmab A/S

25/06/2024

9:12:54 AM

1,802.5000

33

CEUX

Genmab A/S

25/06/2024

9:12:54 AM

1,802.5000

29

CEUX

Genmab A/S

25/06/2024

9:12:54 AM

1,802.5000

5

AQEU

Genmab A/S

25/06/2024

9:12:54 AM

1,802.5000

5

AQEU

52

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

9:12:54 AM

1,802.5000

5

AQEU

Genmab A/S

25/06/2024

9:12:54 AM

1,802.5000

10

CEUX

Genmab A/S

25/06/2024

9:12:54 AM

1,802.5000

5

TQEX

Genmab A/S

25/06/2024

9:12:54 AM

1,802.5000

8

TQEX

Genmab A/S

25/06/2024

9:12:54 AM

1,802.5000

5

TQEX

Genmab A/S

25/06/2024

9:12:54 AM

1,802.5000

8

TQEX

Genmab A/S

25/06/2024

9:12:54 AM

1,802.5000

5

TQEX

Genmab A/S

25/06/2024

9:12:54 AM

1,802.5000

2

TQEX

Genmab A/S

25/06/2024

9:12:54 AM

1,802.5000

5

TQEX

Genmab A/S

25/06/2024

9:12:54 AM

1,802.5000

8

TQEX

Genmab A/S

25/06/2024

9:12:54 AM

1,802.5000

37

XCSE

Genmab A/S

25/06/2024

9:12:54 AM

1,802.5000

47

XCSE

Genmab A/S

25/06/2024

9:12:54 AM

1,802.5000

31

XCSE

Genmab A/S

25/06/2024

9:12:54 AM

1,802.5000

4

CEUX

Genmab A/S

25/06/2024

9:12:54 AM

1,802.5000

9

CEUX

Genmab A/S

25/06/2024

9:12:54 AM

1,802.5000

5

AQEU

Genmab A/S

25/06/2024

9:12:54 AM

1,802.5000

2

TQEX

Genmab A/S

25/06/2024

9:12:54 AM

1,802.5000

9

TQEX

Genmab A/S

25/06/2024

9:12:54 AM

1,801.5000

5

XCSE

Genmab A/S

25/06/2024

9:12:54 AM

1,801.5000

25

XCSE

Genmab A/S

25/06/2024

9:12:54 AM

1,801.5000

2

XCSE

Genmab A/S

25/06/2024

9:12:54 AM

1,801.5000

17

XCSE

Genmab A/S

25/06/2024

9:12:54 AM

1,801.5000

2

XCSE

Genmab A/S

25/06/2024

9:12:54 AM

1,801.5000

17

XCSE

Genmab A/S

25/06/2024

9:12:54 AM

1,801.5000

9

XCSE

Genmab A/S

25/06/2024

9:12:54 AM

1,801.5000

18

XCSE

Genmab A/S

25/06/2024

9:12:54 AM

1,801.5000

5

XCSE

Genmab A/S

25/06/2024

9:12:54 AM

1,801.5000

18

XCSE

Genmab A/S

25/06/2024

9:14:22 AM

1,801.0000

18

XCSE

Genmab A/S

25/06/2024

9:14:22 AM

1,801.0000

35

XCSE

Genmab A/S

25/06/2024

9:14:22 AM

1,801.0000

48

CEUX

Genmab A/S

25/06/2024

9:14:22 AM

1,801.0000

7

AQEU

Genmab A/S

25/06/2024

9:14:22 AM

1,801.0000

7

TQEX

Genmab A/S

25/06/2024

9:14:22 AM

1,800.5000

5

XCSE

Genmab A/S

25/06/2024

9:14:22 AM

1,800.5000

65

XCSE

Genmab A/S

25/06/2024

9:14:22 AM

1,800.5000

11

XCSE

Genmab A/S

25/06/2024

9:14:22 AM

1,800.0000

2

XCSE

Genmab A/S

25/06/2024

9:14:22 AM

1,800.0000

46

XCSE

Genmab A/S

25/06/2024

9:14:22 AM

1,800.0000

12

XCSE

Genmab A/S

25/06/2024

9:14:22 AM

1,800.0000

36

XCSE

Genmab A/S

25/06/2024

9:14:22 AM

1,800.0000

14

XCSE

Genmab A/S

25/06/2024

9:15:28 AM

1,796.0000

40

XCSE

Genmab A/S

25/06/2024

9:15:28 AM

1,796.0000

44

XCSE

Genmab A/S

25/06/2024

9:15:28 AM

1,796.0000

41

CEUX

Genmab A/S

25/06/2024

9:15:28 AM

1,796.0000

12

AQEU

Genmab A/S

25/06/2024

9:17:25 AM

1,796.0000

33

CEUX

Genmab A/S

25/06/2024

9:17:25 AM

1,796.0000

27

CEUX

Genmab A/S

25/06/2024

9:18:03 AM

1,796.5000

60

XCSE

53

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

9:18:03 AM

1,796.5000

55

CEUX

Genmab A/S

25/06/2024

9:18:03 AM

1,796.5000

8

AQEU

Genmab A/S

25/06/2024

9:18:03 AM

1,796.5000

8

TQEX

Genmab A/S

25/06/2024

9:18:49 AM

1,796.5000

46

XCSE

Genmab A/S

25/06/2024

9:18:49 AM

1,796.5000

67

XCSE

Genmab A/S

25/06/2024

9:18:49 AM

1,796.5000

4

XCSE

Genmab A/S

25/06/2024

9:18:49 AM

1,796.5000

12

XCSE

Genmab A/S

25/06/2024

9:18:49 AM

1,795.5000

53

XCSE

Genmab A/S

25/06/2024

9:18:49 AM

1,795.5000

46

XCSE

Genmab A/S

25/06/2024

9:18:49 AM

1,795.5000

25

CEUX

Genmab A/S

25/06/2024

9:18:49 AM

1,795.5000

18

XCSE

Genmab A/S

25/06/2024

9:20:28 AM

1,799.0000

53

XCSE

Genmab A/S

25/06/2024

9:20:28 AM

1,799.0000

3

XCSE

Genmab A/S

25/06/2024

9:21:28 AM

1,799.0000

13

XCSE

Genmab A/S

25/06/2024

9:21:28 AM

1,799.0000

13

XCSE

Genmab A/S

25/06/2024

9:21:28 AM

1,799.0000

57

XCSE

Genmab A/S

25/06/2024

9:21:28 AM

1,799.0000

55

XCSE

Genmab A/S

25/06/2024

9:21:28 AM

1,799.0000

26

XCSE

Genmab A/S

25/06/2024

9:21:28 AM

1,799.0000

19

XCSE

Genmab A/S

25/06/2024

9:21:28 AM

1,799.0000

7

XCSE

Genmab A/S

25/06/2024

9:21:28 AM

1,799.0000

26

XCSE

Genmab A/S

25/06/2024

9:21:28 AM

1,799.0000

18

XCSE

Genmab A/S

25/06/2024

9:24:13 AM

1,800.0000

39

XCSE

Genmab A/S

25/06/2024

9:24:28 AM

1,799.0000

1

AQEU

Genmab A/S

25/06/2024

9:24:28 AM

1,799.0000

6

AQEU

Genmab A/S

25/06/2024

9:24:28 AM

1,799.0000

5

CEUX

Genmab A/S

25/06/2024

9:24:28 AM

1,799.0000

5

TQEX

Genmab A/S

25/06/2024

9:24:28 AM

1,799.0000

9

TQEX

Genmab A/S

25/06/2024

9:24:39 AM

1,800.0000

8

XCSE

Genmab A/S

25/06/2024

9:24:39 AM

1,800.0000

27

XCSE

Genmab A/S

25/06/2024

9:24:54 AM

1,800.0000

9

XCSE

Genmab A/S

25/06/2024

9:24:54 AM

1,800.0000

25

XCSE

Genmab A/S

25/06/2024

9:25:08 AM

1,800.0000

14

XCSE

Genmab A/S

25/06/2024

9:25:08 AM

1,800.0000

19

XCSE

Genmab A/S

25/06/2024

9:25:23 AM

1,800.0000

39

XCSE

Genmab A/S

25/06/2024

9:25:39 AM

1,800.0000

36

XCSE

Genmab A/S

25/06/2024

9:25:53 AM

1,800.0000

36

XCSE

Genmab A/S

25/06/2024

9:26:08 AM

1,800.0000

41

XCSE

Genmab A/S

25/06/2024

9:26:17 AM

1,799.0000

5

CEUX

Genmab A/S

25/06/2024

9:26:17 AM

1,799.0000

19

CEUX

Genmab A/S

25/06/2024

9:26:17 AM

1,799.0000

39

CEUX

Genmab A/S

25/06/2024

9:26:17 AM

1,799.0000

10

CEUX

Genmab A/S

25/06/2024

9:26:17 AM

1,799.0000

10

CEUX

Genmab A/S

25/06/2024

9:26:17 AM

1,799.0000

4

CEUX

Genmab A/S

25/06/2024

9:26:17 AM

1,799.0000

10

CEUX

Genmab A/S

25/06/2024

9:26:17 AM

1,799.0000

3

CEUX

Genmab A/S

25/06/2024

9:26:17 AM

1,799.0000

3

AQEU

Genmab A/S

25/06/2024

9:26:17 AM

1,799.0000

1

AQEU

54

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

9:26:17 AM

1,799.0000

1

AQEU

Genmab A/S

25/06/2024

9:26:17 AM

1,799.0000

5

TQEX

Genmab A/S

25/06/2024

9:26:17 AM

1,799.0000

5

TQEX

Genmab A/S

25/06/2024

9:26:17 AM

1,799.0000

11

TQEX

Genmab A/S

25/06/2024

9:26:17 AM

1,799.0000

5

TQEX

Genmab A/S

25/06/2024

9:26:17 AM

1,799.0000

11

TQEX

Genmab A/S

25/06/2024

9:26:17 AM

1,799.0000

4

TQEX

Genmab A/S

25/06/2024

9:26:17 AM

1,799.0000

9

XCSE

Genmab A/S

25/06/2024

9:26:17 AM

1,799.0000

30

XCSE

Genmab A/S

25/06/2024

9:26:17 AM

1,799.0000

34

XCSE

Genmab A/S

25/06/2024

9:26:17 AM

1,799.0000

9

XCSE

Genmab A/S

25/06/2024

9:26:17 AM

1,799.0000

32

XCSE

Genmab A/S

25/06/2024

9:26:17 AM

1,799.0000

20

CEUX

Genmab A/S

25/06/2024

9:26:17 AM

1,799.0000

5

CEUX

Genmab A/S

25/06/2024

9:26:17 AM

1,799.0000

12

CEUX

Genmab A/S

25/06/2024

9:26:17 AM

1,799.0000

4

CEUX

Genmab A/S

25/06/2024

9:28:27 AM

1,798.5000

8

AQEU

Genmab A/S

25/06/2024

9:28:27 AM

1,798.5000

60

CEUX

Genmab A/S

25/06/2024

9:28:27 AM

1,798.5000

9

TQEX

Genmab A/S

25/06/2024

9:28:27 AM

1,798.5000

67

XCSE

Genmab A/S

25/06/2024

9:28:27 AM

1,798.5000

1

CEUX

Genmab A/S

25/06/2024

9:28:27 AM

1,798.0000

49

XCSE

Genmab A/S

25/06/2024

9:30:18 AM

1,798.5000

55

XCSE

Genmab A/S

25/06/2024

9:30:18 AM

1,798.5000

15

XCSE

Genmab A/S

25/06/2024

9:30:27 AM

1,798.5000

30

XCSE

Genmab A/S

25/06/2024

9:31:13 AM

1,800.0000

8

XCSE

Genmab A/S

25/06/2024

9:31:13 AM

1,800.0000

8

XCSE

Genmab A/S

25/06/2024

9:31:13 AM

1,800.0000

8

XCSE

Genmab A/S

25/06/2024

9:31:13 AM

1,800.0000

8

XCSE

Genmab A/S

25/06/2024

9:31:13 AM

1,800.0000

8

XCSE

Genmab A/S

25/06/2024

9:31:13 AM

1,800.0000

9

CEUX

Genmab A/S

25/06/2024

9:31:13 AM

1,800.0000

9

CEUX

Genmab A/S

25/06/2024

9:31:13 AM

1,800.0000

9

CEUX

Genmab A/S

25/06/2024

9:31:13 AM

1,800.0000

3

CEUX

Genmab A/S

25/06/2024

9:31:13 AM

1,800.0000

9

CEUX

Genmab A/S

25/06/2024

9:31:13 AM

1,800.0000

9

CEUX

Genmab A/S

25/06/2024

9:31:13 AM

1,800.0000

3

CEUX

Genmab A/S

25/06/2024

9:31:13 AM

1,800.0000

5

TQEX

Genmab A/S

25/06/2024

9:31:13 AM

1,800.0000

5

TQEX

Genmab A/S

25/06/2024

9:31:13 AM

1,800.0000

5

TQEX

Genmab A/S

25/06/2024

9:31:13 AM

1,800.0000

8

XCSE

Genmab A/S

25/06/2024

9:31:13 AM

1,800.0000

8

XCSE

Genmab A/S

25/06/2024

9:31:44 AM

1,799.5000

46

XCSE

Genmab A/S

25/06/2024

9:31:44 AM

1,799.5000

46

XCSE

Genmab A/S

25/06/2024

9:31:44 AM

1,799.5000

14

XCSE

Genmab A/S

25/06/2024

9:31:44 AM

1,799.5000

11

XCSE

Genmab A/S

25/06/2024

9:33:22 AM

1,800.5000

2

TQEX

Genmab A/S

25/06/2024

9:33:22 AM

1,800.5000

2

TQEX

55

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

9:33:22 AM

1,800.5000

4

XCSE

Genmab A/S

25/06/2024

9:33:22 AM

1,800.5000

28

XCSE

Genmab A/S

25/06/2024

9:33:37 AM

1,800.0000

11

XCSE

Genmab A/S

25/06/2024

9:33:37 AM

1,800.0000

28

XCSE

Genmab A/S

25/06/2024

9:33:45 AM

1,800.0000

20

XCSE

Genmab A/S

25/06/2024

9:33:45 AM

1,800.0000

22

XCSE

Genmab A/S

25/06/2024

9:33:45 AM

1,800.0000

20

XCSE

Genmab A/S

25/06/2024

9:33:45 AM

1,800.0000

62

XCSE

Genmab A/S

25/06/2024

9:33:45 AM

1,800.0000

56

CEUX

Genmab A/S

25/06/2024

9:33:45 AM

1,800.0000

9

CEUX

Genmab A/S

25/06/2024

9:33:45 AM

1,800.0000

47

CEUX

Genmab A/S

25/06/2024

9:33:45 AM

1,800.0000

9

CEUX

Genmab A/S

25/06/2024

9:33:45 AM

1,800.0000

53

CEUX

Genmab A/S

25/06/2024

9:33:45 AM

1,800.0000

9

TQEX

Genmab A/S

25/06/2024

9:33:45 AM

1,800.0000

9

TQEX

Genmab A/S

25/06/2024

9:33:45 AM

1,800.0000

1

TQEX

Genmab A/S

25/06/2024

9:33:45 AM

1,800.0000

9

TQEX

Genmab A/S

25/06/2024

9:33:45 AM

1,800.0000

9

TQEX

Genmab A/S

25/06/2024

9:33:45 AM

1,800.0000

9

TQEX

Genmab A/S

25/06/2024

9:33:45 AM

1,800.0000

16

XCSE

Genmab A/S

25/06/2024

9:33:45 AM

1,800.0000

6

XCSE

Genmab A/S

25/06/2024

9:33:45 AM

1,800.0000

4

XCSE

Genmab A/S

25/06/2024

9:33:45 AM

1,800.0000

36

CEUX

Genmab A/S

25/06/2024

9:33:45 AM

1,800.0000

5

CEUX

Genmab A/S

25/06/2024

9:33:45 AM

1,800.0000

1

TQEX

Genmab A/S

25/06/2024

9:33:46 AM

1,799.5000

2

AQEU

Genmab A/S

25/06/2024

9:33:46 AM

1,799.5000

5

TQEX

Genmab A/S

25/06/2024

9:36:10 AM

1,804.0000

51

XCSE

Genmab A/S

25/06/2024

9:36:10 AM

1,804.0000

14

XCSE

Genmab A/S

25/06/2024

9:36:10 AM

1,804.0000

31

XCSE

Genmab A/S

25/06/2024

9:36:10 AM

1,804.0000

46

CEUX

Genmab A/S

25/06/2024

9:36:10 AM

1,804.0000

40

CEUX

Genmab A/S

25/06/2024

9:36:10 AM

1,804.0000

7

AQEU

Genmab A/S

25/06/2024

9:36:10 AM

1,804.0000

7

TQEX

Genmab A/S

25/06/2024

9:36:10 AM

1,804.0000

7

AQEU

Genmab A/S

25/06/2024

9:36:10 AM

1,804.0000

7

AQEU

Genmab A/S

25/06/2024

9:36:10 AM

1,804.0000

7

TQEX

Genmab A/S

25/06/2024

9:36:10 AM

1,804.0000

6

TQEX

Genmab A/S

25/06/2024

9:36:10 AM

1,804.0000

7

TQEX

Genmab A/S

25/06/2024

9:36:10 AM

1,804.0000

19

TQEX

Genmab A/S

25/06/2024

9:36:10 AM

1,804.0000

9

AQEU

Genmab A/S

25/06/2024

9:36:10 AM

1,804.0000

14

TQEX

Genmab A/S

25/06/2024

9:36:21 AM

1,803.0000

17

CEUX

Genmab A/S

25/06/2024

9:36:21 AM

1,803.0000

3

CEUX

Genmab A/S

25/06/2024

9:36:21 AM

1,803.0000

5

TQEX

Genmab A/S

25/06/2024

9:36:21 AM

1,803.0000

20

XCSE

Genmab A/S

25/06/2024

9:36:30 AM

1,801.5000

9

CEUX

Genmab A/S

25/06/2024

9:37:45 AM

1,803.0000

10

XCSE

56

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

9:37:45 AM

1,803.0000

20

XCSE

Genmab A/S

25/06/2024

9:39:26 AM

1,803.5000

4

AQEU

Genmab A/S

25/06/2024

9:39:26 AM

1,803.5000

1

AQEU

Genmab A/S

25/06/2024

9:39:26 AM

1,803.5000

3

AQEU

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

27

CEUX

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

11

CEUX

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

15

CEUX

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

2

CEUX

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

11

CEUX

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

7

CEUX

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

11

CEUX

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

11

CEUX

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

11

CEUX

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

5

CEUX

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

11

CEUX

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

1

CEUX

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

1

AQEU

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

1

AQEU

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

4

AQEU

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

1

AQEU

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

4

AQEU

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

1

AQEU

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

4

AQEU

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

1

AQEU

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

4

AQEU

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

1

AQEU

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

4

AQEU

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

1

AQEU

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

4

AQEU

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

1

AQEU

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

3

AQEU

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

5

TQEX

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

5

TQEX

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

1

AQEU

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

1

AQEU

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

2

AQEU

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

2

AQEU

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

2

AQEU

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

1

AQEU

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

2

AQEU

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

1

AQEU

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

3

AQEU

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

1

AQEU

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

3

AQEU

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

5

TQEX

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

5

TQEX

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

5

TQEX

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

5

TQEX

57

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

5

TQEX

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

5

TQEX

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

5

TQEX

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

28

XCSE

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

10

XCSE

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

35

XCSE

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

20

XCSE

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

10

XCSE

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

10

XCSE

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

3

XCSE

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

10

XCSE

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

10

XCSE

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

10

XCSE

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

10

XCSE

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

10

XCSE

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

2

XCSE

Genmab A/S

25/06/2024

9:40:00 AM

1,803.0000

34

CEUX

Genmab A/S

25/06/2024

9:40:00 AM

1,803.0000

9

AQEU

Genmab A/S

25/06/2024

9:40:00 AM

1,803.0000

9

TQEX

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

8

AQEU

Genmab A/S

25/06/2024

9:40:00 AM

1,803.0000

9

AQEU

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

1

AQEU

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

2

AQEU

Genmab A/S

25/06/2024

9:40:00 AM

1,803.5000

35

AQEU

Genmab A/S

25/06/2024

9:40:00 AM

1,802.5000

21

CEUX

Genmab A/S

25/06/2024

9:40:00 AM

1,802.5000

20

CEUX

Genmab A/S

25/06/2024

9:40:00 AM

1,802.5000

21

CEUX

Genmab A/S

25/06/2024

9:40:00 AM

1,802.5000

3

AQEU

Genmab A/S

25/06/2024

9:40:00 AM

1,802.5000

2

AQEU

Genmab A/S

25/06/2024

9:40:00 AM

1,802.5000

2

TQEX

Genmab A/S

25/06/2024

9:40:00 AM

1,802.5000

3

TQEX

Genmab A/S

25/06/2024

9:40:00 AM

1,802.5000

5

TQEX

Genmab A/S

25/06/2024

9:40:00 AM

1,802.5000

2

TQEX

Genmab A/S

25/06/2024

9:40:00 AM

1,802.5000

5

TQEX

Genmab A/S

25/06/2024

9:40:01 AM

1,802.5000

22

XCSE

Genmab A/S

25/06/2024

9:40:01 AM

1,802.5000

20

XCSE

Genmab A/S

25/06/2024

9:40:01 AM

1,802.5000

15

CEUX

Genmab A/S

25/06/2024

9:42:27 AM

1,801.0000

1

AQEU

Genmab A/S

25/06/2024

9:43:25 AM

1,801.0000

16

XCSE

Genmab A/S

25/06/2024

9:43:25 AM

1,801.0000

44

XCSE

Genmab A/S

25/06/2024

9:43:25 AM

1,801.0000

28

XCSE

Genmab A/S

25/06/2024

9:43:25 AM

1,801.0000

16

XCSE

Genmab A/S

25/06/2024

9:43:25 AM

1,801.0000

42

XCSE

Genmab A/S

25/06/2024

9:43:25 AM

1,801.0000

55

CEUX

Genmab A/S

25/06/2024

9:43:25 AM

1,801.0000

15

CEUX

Genmab A/S

25/06/2024

9:43:25 AM

1,801.0000

40

CEUX

Genmab A/S

25/06/2024

9:43:25 AM

1,801.0000

15

CEUX

Genmab A/S

25/06/2024

9:43:25 AM

1,801.0000

8

CEUX

58

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

9:43:25 AM

1,801.0000

7

AQEU

Genmab A/S

25/06/2024

9:43:25 AM

1,801.0000

7

AQEU

Genmab A/S

25/06/2024

9:43:25 AM

1,801.0000

1

AQEU

Genmab A/S

25/06/2024

9:43:25 AM

1,801.0000

6

AQEU

Genmab A/S

25/06/2024

9:43:25 AM

1,801.0000

7

AQEU

Genmab A/S

25/06/2024

9:43:25 AM

1,801.0000

8

TQEX

Genmab A/S

25/06/2024

9:43:25 AM

1,801.0000

8

TQEX

Genmab A/S

25/06/2024

9:43:25 AM

1,801.0000

8

TQEX

Genmab A/S

25/06/2024

9:43:25 AM

1,801.0000

8

TQEX

Genmab A/S

25/06/2024

9:43:25 AM

1,801.0000

8

TQEX

Genmab A/S

25/06/2024

9:43:25 AM

1,801.0000

6

TQEX

Genmab A/S

25/06/2024

9:43:25 AM

1,801.0000

6

CEUX

Genmab A/S

25/06/2024

9:43:25 AM

1,801.0000

9

AQEU

Genmab A/S

25/06/2024

9:44:02 AM

1,800.0000

19

XCSE

Genmab A/S

25/06/2024

9:44:02 AM

1,800.0000

44

XCSE

Genmab A/S

25/06/2024

9:44:02 AM

1,800.0000

2

AQEU

Genmab A/S

25/06/2024

9:44:02 AM

1,800.0000

42

AQEU

Genmab A/S

25/06/2024

9:44:02 AM

1,800.0000

5

TQEX

Genmab A/S

25/06/2024

9:44:02 AM

1,800.0000

45

XCSE

Genmab A/S

25/06/2024

9:44:02 AM

1,800.0000

36

XCSE

Genmab A/S

25/06/2024

9:45:37 AM

1,800.0000

11

XCSE

Genmab A/S

25/06/2024

9:46:18 AM

1,800.5000

12

XCSE

Genmab A/S

25/06/2024

9:46:18 AM

1,800.5000

12

XCSE

Genmab A/S

25/06/2024

9:46:18 AM

1,800.5000

28

XCSE

Genmab A/S

25/06/2024

9:46:18 AM

1,800.5000

12

XCSE

Genmab A/S

25/06/2024

9:46:18 AM

1,800.5000

1

XCSE

Genmab A/S

25/06/2024

9:47:28 AM

1,800.0000

1

AQEU

Genmab A/S

25/06/2024

9:48:54 AM

1,800.0000

2

XCSE

Genmab A/S

25/06/2024

9:49:44 AM

1,800.5000

13

AQEU

Genmab A/S

25/06/2024

9:50:48 AM

1,800.5000

10

CEUX

Genmab A/S

25/06/2024

9:51:13 AM

1,805.0000

18

XCSE

Genmab A/S

25/06/2024

9:51:13 AM

1,805.0000

34

XCSE

Genmab A/S

25/06/2024

9:51:13 AM

1,805.0000

30

XCSE

Genmab A/S

25/06/2024

9:51:45 AM

1,805.0000

16

XCSE

Genmab A/S

25/06/2024

9:51:45 AM

1,805.0000

6

XCSE

Genmab A/S

25/06/2024

9:51:45 AM

1,805.0000

23

XCSE

Genmab A/S

25/06/2024

9:51:45 AM

1,805.0000

22

XCSE

Genmab A/S

25/06/2024

9:51:45 AM

1,805.0000

45

XCSE

Genmab A/S

25/06/2024

9:51:45 AM

1,805.0000

46

XCSE

Genmab A/S

25/06/2024

9:51:45 AM

1,805.0000

51

XCSE

Genmab A/S

25/06/2024

9:51:45 AM

1,805.0000

6

XCSE

Genmab A/S

25/06/2024

9:51:45 AM

1,805.0000

3

AQEU

Genmab A/S

25/06/2024

9:51:45 AM

1,805.0000

20

CEUX

Genmab A/S

25/06/2024

9:51:45 AM

1,805.0000

9

CEUX

Genmab A/S

25/06/2024

9:51:45 AM

1,805.0000

3

AQEU

Genmab A/S

25/06/2024

9:51:45 AM

1,805.0000

9

AQEU

Genmab A/S

25/06/2024

9:51:45 AM

1,805.0000

9

TQEX

Genmab A/S

25/06/2024

9:51:45 AM

1,805.0000

5

TQEX

59

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

9:51:45 AM

1,805.0000

45

XCSE

Genmab A/S

25/06/2024

9:51:45 AM

1,805.0000

22

XCSE

Genmab A/S

25/06/2024

9:51:45 AM

1,805.0000

45

XCSE

Genmab A/S

25/06/2024

9:51:45 AM

1,805.0000

46

XCSE

Genmab A/S

25/06/2024

9:51:45 AM

1,805.0000

51

XCSE

Genmab A/S

25/06/2024

9:51:45 AM

1,805.0000

11

XCSE

Genmab A/S

25/06/2024

9:52:31 AM

1,804.0000

1

AQEU

Genmab A/S

25/06/2024

9:55:10 AM

1,805.5000

1

TQEX

Genmab A/S

25/06/2024

9:55:35 AM

1,805.0000

9

XCSE

Genmab A/S

25/06/2024

9:55:35 AM

1,805.0000

5

TQEX

Genmab A/S

25/06/2024

9:55:35 AM

1,805.0000

9

CEUX

Genmab A/S

25/06/2024

9:55:35 AM

1,805.0000

9

CEUX

Genmab A/S

25/06/2024

9:55:35 AM

1,805.0000

9

CEUX

Genmab A/S

25/06/2024

9:55:35 AM

1,805.0000

9

CEUX

Genmab A/S

25/06/2024

9:55:35 AM

1,805.0000

9

CEUX

Genmab A/S

25/06/2024

9:55:35 AM

1,805.0000

9

CEUX

Genmab A/S

25/06/2024

9:55:35 AM

1,805.0000

3

CEUX

Genmab A/S

25/06/2024

9:55:35 AM

1,805.0000

6

CEUX

Genmab A/S

25/06/2024

9:55:35 AM

1,805.0000

1

AQEU

Genmab A/S

25/06/2024

9:55:35 AM

1,805.0000

5

TQEX

Genmab A/S

25/06/2024

9:55:35 AM

1,805.0000

1

CEUX

Genmab A/S

25/06/2024

9:55:35 AM

1,805.0000

2

CEUX

Genmab A/S

25/06/2024

9:55:35 AM

1,805.0000

9

CEUX

Genmab A/S

25/06/2024

9:55:35 AM

1,805.0000

1

AQEU

Genmab A/S

25/06/2024

9:55:35 AM

1,805.0000

1

AQEU

Genmab A/S

25/06/2024

9:55:35 AM

1,805.0000

9

XCSE

Genmab A/S

25/06/2024

9:55:35 AM

1,805.0000

33

XCSE

Genmab A/S

25/06/2024

9:55:35 AM

1,805.0000

2

XCSE

Genmab A/S

25/06/2024

9:55:35 AM

1,805.0000

7

XCSE

Genmab A/S

25/06/2024

9:55:35 AM

1,805.0000

2

XCSE

Genmab A/S

25/06/2024

9:55:35 AM

1,805.0000

9

XCSE

Genmab A/S

25/06/2024

9:55:35 AM

1,805.0000

1

XCSE

Genmab A/S

25/06/2024

9:55:35 AM

1,805.0000

8

XCSE

Genmab A/S

25/06/2024

9:55:35 AM

1,805.0000

9

XCSE

Genmab A/S

25/06/2024

9:55:35 AM

1,805.0000

9

XCSE

Genmab A/S

25/06/2024

9:55:35 AM

1,805.0000

9

XCSE

Genmab A/S

25/06/2024

9:56:10 AM

1,805.0000

51

XCSE

Genmab A/S

25/06/2024

9:56:10 AM

1,805.0000

9

XCSE

Genmab A/S

25/06/2024

9:56:10 AM

1,805.0000

12

XCSE

Genmab A/S

25/06/2024

9:56:10 AM

1,805.0000

45

CEUX

Genmab A/S

25/06/2024

9:56:10 AM

1,805.0000

21

CEUX

Genmab A/S

25/06/2024

9:56:10 AM

1,805.0000

36

AQEU

Genmab A/S

25/06/2024

9:56:10 AM

1,805.0000

7

AQEU

Genmab A/S

25/06/2024

9:56:10 AM

1,805.0000

7

AQEU

Genmab A/S

25/06/2024

9:56:10 AM

1,805.0000

7

AQEU

Genmab A/S

25/06/2024

9:56:10 AM

1,805.0000

7

AQEU

Genmab A/S

25/06/2024

9:56:10 AM

1,805.0000

5

AQEU

Genmab A/S

25/06/2024

9:56:10 AM

1,805.0000

4

TQEX

60

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

9:56:10 AM

1,805.0000

3

TQEX

Genmab A/S

25/06/2024

9:56:10 AM

1,805.0000

7

TQEX

Genmab A/S

25/06/2024

9:56:10 AM

1,805.0000

36

CEUX

Genmab A/S

25/06/2024

9:56:10 AM

1,805.0000

7

AQEU

Genmab A/S

25/06/2024

9:56:10 AM

1,804.5000

4

XCSE

Genmab A/S

25/06/2024

9:56:10 AM

1,804.5000

3

XCSE

Genmab A/S

25/06/2024

9:56:10 AM

1,804.5000

39

XCSE

Genmab A/S

25/06/2024

9:56:10 AM

1,804.5000

10

XCSE

Genmab A/S

25/06/2024

9:57:26 AM

1,804.5000

1

AQEU

Genmab A/S

25/06/2024

9:57:27 AM

1,804.5000

1

AQEU

Genmab A/S

25/06/2024

9:57:27 AM

1,804.5000

2

AQEU

Genmab A/S

25/06/2024

9:58:25 AM

1,804.5000

1

CEUX

Genmab A/S

25/06/2024

9:58:25 AM

1,804.5000

6

CEUX

Genmab A/S

25/06/2024

9:58:25 AM

1,804.5000

4

AQEU

Genmab A/S

25/06/2024

9:58:46 AM

1,805.5000

30

XCSE

Genmab A/S

25/06/2024

9:59:00 AM

1,805.5000

25

AQEU

Genmab A/S

25/06/2024

9:59:00 AM

1,805.5000

2

AQEU

Genmab A/S

25/06/2024

9:59:00 AM

1,805.5000

2

AQEU

Genmab A/S

25/06/2024

9:59:00 AM

1,805.5000

2

TQEX

Genmab A/S

25/06/2024

9:59:00 AM

1,805.5000

2

TQEX

Genmab A/S

25/06/2024

9:59:00 AM

1,805.5000

5

TQEX

Genmab A/S

25/06/2024

9:59:19 AM

1,805.5000

2

AQEU

Genmab A/S

25/06/2024

9:59:19 AM

1,805.5000

2

AQEU

Genmab A/S

25/06/2024

9:59:19 AM

1,805.5000

9

AQEU

Genmab A/S

25/06/2024

9:59:19 AM

1,805.5000

3

TQEX

Genmab A/S

25/06/2024

9:59:19 AM

1,805.5000

2

TQEX

Genmab A/S

25/06/2024

9:59:19 AM

1,805.5000

2

TQEX

Genmab A/S

25/06/2024

9:59:19 AM

1,805.5000

10

XCSE

Genmab A/S

25/06/2024

9:59:19 AM

1,805.5000

7

XCSE

Genmab A/S

25/06/2024

9:59:41 AM

1,805.5000

2

AQEU

Genmab A/S

25/06/2024

9:59:41 AM

1,805.5000

2

AQEU

Genmab A/S

25/06/2024

9:59:41 AM

1,805.5000

9

AQEU

Genmab A/S

25/06/2024

9:59:41 AM

1,805.5000

9

TQEX

Genmab A/S

25/06/2024

9:59:41 AM

1,805.5000

10

XCSE

Genmab A/S

25/06/2024

9:59:41 AM

1,805.5000

5

XCSE

Genmab A/S

25/06/2024

9:59:52 AM

1,804.5000

1

AQEU

Genmab A/S

25/06/2024

9:59:55 AM

1,805.0000

3

TQEX

Genmab A/S

25/06/2024

9:59:55 AM

1,805.0000

1

TQEX

Genmab A/S

25/06/2024

9:59:55 AM

1,805.0000

29

XCSE

Genmab A/S

25/06/2024

10:00:09 AM

1,804.5000

9

XCSE

Genmab A/S

25/06/2024

10:00:18 AM

1,805.5000

2

TQEX

Genmab A/S

25/06/2024

10:00:25 AM

1,805.5000

1

TQEX

Genmab A/S

25/06/2024

10:00:25 AM

1,805.5000

24

XCSE

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

39

XCSE

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

5

AQEU

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

35

CEUX

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

35

CEUX

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

15

CEUX

61

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

5

CEUX

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

4

CEUX

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

26

CEUX

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

2

XCSE

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

1

XCSE

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

3

XCSE

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

1

XCSE

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

2

XCSE

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

1

XCSE

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

20

XCSE

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

9

XCSE

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

2

CEUX

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

18

CEUX

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

19

XCSE

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

1

XCSE

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

19

XCSE

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

1

XCSE

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

1

XCSE

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

38

XCSE

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

1

XCSE

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

1

XCSE

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

1

XCSE

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

5

TQEX

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

11

CEUX

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

4

CEUX

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

11

CEUX

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

3

AQEU

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

2

AQEU

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

2

AQEU

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

3

AQEU

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

5

AQEU

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

5

AQEU

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

1

TQEX

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

6

TQEX

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

6

TQEX

Genmab A/S

25/06/2024

10:01:22 AM

1,805.0000

23

XCSE

Genmab A/S

25/06/2024

10:01:22 AM

1,804.5000

22

XCSE

Genmab A/S

25/06/2024

10:01:22 AM

1,804.5000

1

XCSE

Genmab A/S

25/06/2024

10:01:35 AM

1,803.5000

100

CEUX

Genmab A/S

25/06/2024

10:01:35 AM

1,803.5000

12

AQEU

Genmab A/S

25/06/2024

10:01:35 AM

1,803.5000

2

AQEU

Genmab A/S

25/06/2024

10:01:35 AM

1,803.5000

16

TQEX

Genmab A/S

25/06/2024

10:01:35 AM

1,803.5000

111

XCSE

Genmab A/S

25/06/2024

10:05:12 AM

1,802.0000

1

AQEU

Genmab A/S

25/06/2024

10:06:26 AM

1,805.0000

3

AQEU

Genmab A/S

25/06/2024

10:07:25 AM

1,805.5000

2

CEUX

Genmab A/S

25/06/2024

10:07:25 AM

1,805.5000

35

CEUX

Genmab A/S

25/06/2024

10:07:25 AM

1,805.5000

140

CEUX

62

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

10:07:25 AM

1,805.5000

3

CEUX

Genmab A/S

25/06/2024

10:07:25 AM

1,805.5000

6

TQEX

Genmab A/S

25/06/2024

10:07:25 AM

1,805.5000

22

TQEX

Genmab A/S

25/06/2024

10:07:25 AM

1,805.5000

2

TQEX

Genmab A/S

25/06/2024

10:07:25 AM

1,805.5000

4

TQEX

Genmab A/S

25/06/2024

10:07:25 AM

1,805.5000

3

CEUX

Genmab A/S

25/06/2024

10:07:25 AM

1,805.5000

2

CEUX

Genmab A/S

25/06/2024

10:07:25 AM

1,805.5000

29

CEUX

Genmab A/S

25/06/2024

10:07:25 AM

1,805.5000

2

CEUX

Genmab A/S

25/06/2024

10:07:25 AM

1,805.5000

2

CEUX

Genmab A/S

25/06/2024

10:07:25 AM

1,805.5000

1

CEUX

Genmab A/S

25/06/2024

10:07:25 AM

1,805.5000

6

TQEX

Genmab A/S

25/06/2024

10:07:25 AM

1,805.5000

1

TQEX

Genmab A/S

25/06/2024

10:07:25 AM

1,805.5000

2

CEUX

Genmab A/S

25/06/2024

10:07:25 AM

1,805.5000

2

CEUX

Genmab A/S

25/06/2024

10:07:27 AM

1,805.0000

25

XCSE

Genmab A/S

25/06/2024

10:07:27 AM

1,805.5000

6

TQEX

Genmab A/S

25/06/2024

10:07:27 AM

1,805.5000

30

CEUX

Genmab A/S

25/06/2024

10:07:27 AM

1,805.5000

4

CEUX

Genmab A/S

25/06/2024

10:07:27 AM

1,805.5000

6

TQEX

Genmab A/S

25/06/2024

10:07:27 AM

1,805.5000

22

TQEX

Genmab A/S

25/06/2024

10:08:04 AM

1,809.0000

37

XCSE

Genmab A/S

25/06/2024

10:08:04 AM

1,809.0000

8

XCSE

Genmab A/S

25/06/2024

10:08:04 AM

1,809.0000

45

XCSE

Genmab A/S

25/06/2024

10:08:04 AM

1,809.0000

45

XCSE

Genmab A/S

25/06/2024

10:08:04 AM

1,809.0000

10

XCSE

Genmab A/S

25/06/2024

10:08:05 AM

1,808.5000

17

CEUX

Genmab A/S

25/06/2024

10:08:05 AM

1,808.5000

2

AQEU

Genmab A/S

25/06/2024

10:08:05 AM

1,808.5000

5

TQEX

Genmab A/S

25/06/2024

10:08:05 AM

1,808.5000

5

TQEX

Genmab A/S

25/06/2024

10:09:59 AM

1,808.0000

51

XCSE

Genmab A/S

25/06/2024

10:09:59 AM

1,808.0000

7

CEUX

Genmab A/S

25/06/2024

10:10:47 AM

1,808.0000

1

XCSE

Genmab A/S

25/06/2024

10:10:47 AM

1,808.0000

4

XCSE

Genmab A/S

25/06/2024

10:10:47 AM

1,808.0000

46

XCSE

Genmab A/S

25/06/2024

10:10:47 AM

1,808.0000

51

XCSE

Genmab A/S

25/06/2024

10:10:47 AM

1,808.0000

106

XCSE

Genmab A/S

25/06/2024

10:10:47 AM

1,808.0000

38

CEUX

Genmab A/S

25/06/2024

10:10:47 AM

1,808.0000

7

AQEU

Genmab A/S

25/06/2024

10:10:47 AM

1,808.0000

9

AQEU

Genmab A/S

25/06/2024

10:10:47 AM

1,808.0000

9

CEUX

Genmab A/S

25/06/2024

10:10:47 AM

1,808.0000

36

CEUX

Genmab A/S

25/06/2024

10:10:47 AM

1,808.0000

9

CEUX

Genmab A/S

25/06/2024

10:10:47 AM

1,808.0000

45

CEUX

Genmab A/S

25/06/2024

10:10:47 AM

1,808.0000

45

CEUX

Genmab A/S

25/06/2024

10:10:47 AM

1,808.0000

7

AQEU

Genmab A/S

25/06/2024

10:10:47 AM

1,808.0000

6

AQEU

Genmab A/S

25/06/2024

10:10:47 AM

1,808.0000

3

CEUX

63

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

10:10:47 AM

1,808.0000

5

CEUX

Genmab A/S

25/06/2024

10:10:47 AM

1,808.0000

38

XCSE

Genmab A/S

25/06/2024

10:10:47 AM

1,808.0000

14

XCSE

Genmab A/S

25/06/2024

10:10:48 AM

1,807.0000

2

AQEU

Genmab A/S

25/06/2024

10:10:48 AM

1,807.0000

3

AQEU

Genmab A/S

25/06/2024

10:10:48 AM

1,807.0000

2

AQEU

Genmab A/S

25/06/2024

10:10:48 AM

1,807.0000

1

TQEX

Genmab A/S

25/06/2024

10:11:04 AM

1,806.5000

20

CEUX

Genmab A/S

25/06/2024

10:11:04 AM

1,806.5000

22

CEUX

Genmab A/S

25/06/2024

10:11:04 AM

1,806.5000

2

AQEU

Genmab A/S

25/06/2024

10:11:04 AM

1,806.5000

3

AQEU

Genmab A/S

25/06/2024

10:11:04 AM

1,806.5000

2

AQEU

Genmab A/S

25/06/2024

10:11:04 AM

1,806.5000

3

AQEU

Genmab A/S

25/06/2024

10:11:04 AM

1,806.5000

2

AQEU

Genmab A/S

25/06/2024

10:11:04 AM

1,806.5000

5

TQEX

Genmab A/S

25/06/2024

10:11:04 AM

1,806.5000

5

TQEX

Genmab A/S

25/06/2024

10:11:04 AM

1,806.5000

5

TQEX

Genmab A/S

25/06/2024

10:11:04 AM

1,806.5000

5

TQEX

Genmab A/S

25/06/2024

10:11:05 AM

1,806.5000

20

XCSE

Genmab A/S

25/06/2024

10:11:05 AM

1,806.5000

23

XCSE

Genmab A/S

25/06/2024

10:11:05 AM

1,806.5000

3

TQEX

Genmab A/S

25/06/2024

10:11:05 AM

1,806.5000

5

TQEX

Genmab A/S

25/06/2024

10:11:05 AM

1,806.5000

2

TQEX

Genmab A/S

25/06/2024

10:11:05 AM

1,806.5000

20

CEUX

Genmab A/S

25/06/2024

10:11:05 AM

1,806.5000

16

CEUX

Genmab A/S

25/06/2024

10:13:25 AM

1,807.5000

20

CEUX

Genmab A/S

25/06/2024

10:13:25 AM

1,807.5000

20

CEUX

Genmab A/S

25/06/2024

10:13:25 AM

1,807.5000

4

CEUX

Genmab A/S

25/06/2024

10:13:25 AM

1,807.5000

5

TQEX

Genmab A/S

25/06/2024

10:13:25 AM

1,807.5000

47

XCSE

Genmab A/S

25/06/2024

10:13:25 AM

1,807.5000

47

XCSE

Genmab A/S

25/06/2024

10:13:25 AM

1,807.5000

81

XCSE

Genmab A/S

25/06/2024

10:13:25 AM

1,807.5000

5

XCSE

Genmab A/S

25/06/2024

10:13:25 AM

1,807.5000

3

XCSE

Genmab A/S

25/06/2024

10:13:25 AM

1,807.5000

44

XCSE

Genmab A/S

25/06/2024

10:18:27 AM

1,806.0000

1

AQEU

Genmab A/S

25/06/2024

10:19:25 AM

1,806.5000

18

CEUX

Genmab A/S

25/06/2024

10:19:25 AM

1,806.5000

19

XCSE

Genmab A/S

25/06/2024

10:19:25 AM

1,806.5000

2

CEUX

Genmab A/S

25/06/2024

10:20:26 AM

1,806.5000

39

XCSE

Genmab A/S

25/06/2024

10:20:26 AM

1,806.5000

46

XCSE

Genmab A/S

25/06/2024

10:20:26 AM

1,806.5000

6

XCSE

Genmab A/S

25/06/2024

10:20:26 AM

1,806.5000

1

XCSE

Genmab A/S

25/06/2024

10:20:26 AM

1,806.5000

24

XCSE

Genmab A/S

25/06/2024

10:21:35 AM

1,807.0000

10

CEUX

Genmab A/S

25/06/2024

10:21:35 AM

1,807.0000

21

CEUX

Genmab A/S

25/06/2024

10:21:35 AM

1,807.0000

17

CEUX

Genmab A/S

25/06/2024

10:21:35 AM

1,807.0000

4

CEUX

64

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

10:21:35 AM

1,807.0000

14

CEUX

Genmab A/S

25/06/2024

10:21:35 AM

1,807.0000

27

CEUX

Genmab A/S

25/06/2024

10:21:35 AM

1,807.0000

16

CEUX

Genmab A/S

25/06/2024

10:21:47 AM

1,807.0000

12

CEUX

Genmab A/S

25/06/2024

10:21:47 AM

1,807.0000

25

CEUX

Genmab A/S

25/06/2024

10:21:49 AM

1,806.5000

12

XCSE

Genmab A/S

25/06/2024

10:21:49 AM

1,806.5000

12

CEUX

Genmab A/S

25/06/2024

10:22:16 AM

1,806.5000

1

CEUX

Genmab A/S

25/06/2024

10:22:16 AM

1,806.5000

7

CEUX

Genmab A/S

25/06/2024

10:22:16 AM

1,806.5000

2

CEUX

Genmab A/S

25/06/2024

10:22:26 AM

1,806.5000

10

CEUX

Genmab A/S

25/06/2024

10:22:26 AM

1,806.5000

5

TQEX

Genmab A/S

25/06/2024

10:22:26 AM

1,806.5000

5

TQEX

Genmab A/S

25/06/2024

10:22:26 AM

1,806.5000

3

TQEX

Genmab A/S

25/06/2024

10:22:26 AM

1,806.5000

1

AQEU

Genmab A/S

25/06/2024

10:22:35 AM

1,806.5000

10

CEUX

Genmab A/S

25/06/2024

10:22:35 AM

1,806.5000

5

TQEX

Genmab A/S

25/06/2024

10:22:36 AM

1,806.5000

10

XCSE

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

10

XCSE

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

35

XCSE

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

10

XCSE

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

1

XCSE

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

9

XCSE

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

10

CEUX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

10

CEUX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

10

CEUX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

10

CEUX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

10

CEUX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

10

CEUX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

3

CEUX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

5

TQEX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

5

TQEX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

7

CEUX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

10

CEUX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

10

CEUX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

5

TQEX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

10

CEUX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

10

CEUX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

3

CEUX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

5

TQEX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

1

XCSE

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

9

XCSE

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

10

XCSE

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

10

XCSE

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

10

XCSE

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

10

XCSE

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

10

XCSE

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

10

XCSE

65

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

10

XCSE

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

1

XCSE

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

9

XCSE

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

1

XCSE

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

8

XCSE

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

1

XCSE

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

10

CEUX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

5

TQEX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

1

CEUX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

9

CEUX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

1

CEUX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

9

CEUX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

3

TQEX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

9

CEUX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

10

CEUX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

4

CEUX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

10

CEUX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

1

AQEU

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

4

AQEU

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

5

TQEX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

1

XCSE

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

6

XCSE

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

10

XCSE

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

10

XCSE

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

10

CEUX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

4

TQEX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

10

CEUX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

1

CEUX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

10

CEUX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

1

AQEU

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

1

AQEU

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

1

TQEX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

1

TQEX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

5

TQEX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

10

XCSE

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

1

XCSE

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

7

XCSE

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

5

TQEX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

38

XCSE

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

30

XCSE

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

5

CEUX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

9

CEUX

Genmab A/S

25/06/2024

10:23:01 AM

1,806.5000

12

XCSE

Genmab A/S

25/06/2024

10:23:05 AM

1,805.5000

30

CEUX

Genmab A/S

25/06/2024

10:23:05 AM

1,805.5000

53

CEUX

Genmab A/S

25/06/2024

10:23:05 AM

1,805.5000

43

XCSE

Genmab A/S

25/06/2024

10:23:05 AM

1,805.5000

52

XCSE

Genmab A/S

25/06/2024

10:23:05 AM

1,805.5000

38

XCSE

66

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

10:23:05 AM

1,805.5000

40

XCSE

Genmab A/S

25/06/2024

10:27:51 AM

1,802.0000

21

XCSE

Genmab A/S

25/06/2024

10:27:51 AM

1,802.0000

18

XCSE

Genmab A/S

25/06/2024

10:27:51 AM

1,802.0000

21

XCSE

Genmab A/S

25/06/2024

10:27:51 AM

1,802.0000

18

XCSE

Genmab A/S

25/06/2024

10:27:51 AM

1,802.0000

20

XCSE

Genmab A/S

25/06/2024

10:27:51 AM

1,802.0000

18

XCSE

Genmab A/S

25/06/2024

10:27:51 AM

1,802.0000

1

XCSE

Genmab A/S

25/06/2024

10:31:27 AM

1,802.0000

1

AQEU

Genmab A/S

25/06/2024

10:31:34 AM

1,802.5000

9

CEUX

Genmab A/S

25/06/2024

10:31:34 AM

1,802.5000

15

CEUX

Genmab A/S

25/06/2024

10:33:14 AM

1,803.5000

9

TQEX

Genmab A/S

25/06/2024

10:33:14 AM

1,804.0000

18

CEUX

Genmab A/S

25/06/2024

10:33:14 AM

1,804.0000

11

CEUX

Genmab A/S

25/06/2024

10:33:14 AM

1,804.0000

7

CEUX

Genmab A/S

25/06/2024

10:33:14 AM

1,804.0000

10

CEUX

Genmab A/S

25/06/2024

10:33:14 AM

1,804.0000

4

CEUX

Genmab A/S

25/06/2024

10:33:14 AM

1,804.0000

9

CEUX

Genmab A/S

25/06/2024

10:33:15 AM

1,804.0000

36

CEUX

Genmab A/S

25/06/2024

10:33:15 AM

1,804.0000

5

CEUX

Genmab A/S

25/06/2024

10:33:23 AM

1,804.0000

49

XCSE

Genmab A/S

25/06/2024

10:33:23 AM

1,803.5000

17

CEUX

Genmab A/S

25/06/2024

10:33:23 AM

1,804.0000

49

XCSE

Genmab A/S

25/06/2024

10:33:23 AM

1,803.5000

37

XCSE

Genmab A/S

25/06/2024

10:33:23 AM

1,803.5000

12

XCSE

Genmab A/S

25/06/2024

10:33:23 AM

1,803.5000

15

XCSE

Genmab A/S

25/06/2024

10:33:23 AM

1,803.5000

12

XCSE

Genmab A/S

25/06/2024

10:33:23 AM

1,804.0000

16

XCSE

Genmab A/S

25/06/2024

10:34:41 AM

1,803.5000

10

CEUX

Genmab A/S

25/06/2024

10:34:42 AM

1,804.0000

9

AQEU

Genmab A/S

25/06/2024

10:34:42 AM

1,804.0000

2

AQEU

Genmab A/S

25/06/2024

10:34:42 AM

1,804.0000

2

AQEU

Genmab A/S

25/06/2024

10:34:42 AM

1,804.0000

9

TQEX

Genmab A/S

25/06/2024

10:34:55 AM

1,804.0000

2

AQEU

Genmab A/S

25/06/2024

10:34:55 AM

1,804.0000

9

AQEU

Genmab A/S

25/06/2024

10:34:55 AM

1,804.0000

1

TQEX

Genmab A/S

25/06/2024

10:35:07 AM

1,804.0000

41

TQEX

Genmab A/S

25/06/2024

10:35:31 AM

1,803.5000

14

CEUX

Genmab A/S

25/06/2024

10:35:31 AM

1,803.5000

8

CEUX

Genmab A/S

25/06/2024

10:35:42 AM

1,804.0000

2

TQEX

Genmab A/S

25/06/2024

10:35:42 AM

1,804.0000

2

TQEX

Genmab A/S

25/06/2024

10:35:42 AM

1,804.0000

11

TQEX

Genmab A/S

25/06/2024

10:35:42 AM

1,804.0000

24

TQEX

Genmab A/S

25/06/2024

10:36:08 AM

1,804.0000

37

TQEX

Genmab A/S

25/06/2024

10:36:27 AM

1,803.5000

32

CEUX

Genmab A/S

25/06/2024

10:36:27 AM

1,803.5000

3

CEUX

Genmab A/S

25/06/2024

10:36:40 AM

1,803.5000

3

CEUX

Genmab A/S

25/06/2024

10:36:41 AM

1,804.0000

7

TQEX

67

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

10:36:50 AM

1,804.0000

2

TQEX

Genmab A/S

25/06/2024

10:36:50 AM

1,804.0000

2

TQEX

Genmab A/S

25/06/2024

10:37:01 AM

1,804.0000

2

TQEX

Genmab A/S

25/06/2024

10:37:01 AM

1,804.0000

2

TQEX

Genmab A/S

25/06/2024

10:37:08 AM

1,804.0000

2

TQEX

Genmab A/S

25/06/2024

10:37:08 AM

1,804.0000

2

TQEX

Genmab A/S

25/06/2024

10:37:08 AM

1,804.0000

9

TQEX

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

5

TQEX

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

14

CEUX

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

6

CEUX

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

8

CEUX

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

1

AQEU

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

4

TQEX

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

1

TQEX

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

14

XCSE

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

14

XCSE

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

14

XCSE

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

14

XCSE

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

14

XCSE

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

14

XCSE

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

14

XCSE

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

14

XCSE

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

14

XCSE

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

14

XCSE

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

14

XCSE

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

14

XCSE

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

14

XCSE

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

14

XCSE

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

14

XCSE

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

14

XCSE

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

14

XCSE

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

14

CEUX

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

13

CEUX

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

14

CEUX

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

5

TQEX

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

14

CEUX

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

14

CEUX

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

14

CEUX

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

14

CEUX

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

14

CEUX

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

5

TQEX

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

5

TQEX

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

5

TQEX

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

5

TQEX

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

5

TQEX

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

14

XCSE

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

9

XCSE

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

5

TQEX

68

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

14

CEUX

Genmab A/S

25/06/2024

10:37:18 AM

1,802.5000

30

XCSE

Genmab A/S

25/06/2024

10:37:18 AM

1,803.0000

13

XCSE

Genmab A/S

25/06/2024

10:41:27 AM

1,803.5000

1

AQEU

Genmab A/S

25/06/2024

10:41:27 AM

1,803.5000

1

AQEU

Genmab A/S

25/06/2024

10:42:27 AM

1,803.5000

1

AQEU

Genmab A/S

25/06/2024

10:42:28 AM

1,803.5000

12

XCSE

Genmab A/S

25/06/2024

10:42:28 AM

1,803.5000

25

XCSE

Genmab A/S

25/06/2024

10:42:28 AM

1,803.5000

13

CEUX

Genmab A/S

25/06/2024

10:42:28 AM

1,803.5000

5

TQEX

Genmab A/S

25/06/2024

10:42:28 AM

1,803.5000

13

CEUX

Genmab A/S

25/06/2024

10:43:53 AM

1,804.0000

22

XCSE

Genmab A/S

25/06/2024

10:43:56 AM

1,804.0000

9

CEUX

Genmab A/S

25/06/2024

10:43:56 AM

1,804.0000

11

CEUX

Genmab A/S

25/06/2024

10:43:57 AM

1,804.0000

22

XCSE

Genmab A/S

25/06/2024

10:44:05 AM

1,804.0000

14

XCSE

Genmab A/S

25/06/2024

10:44:05 AM

1,804.0000

8

XCSE

Genmab A/S

25/06/2024

10:44:05 AM

1,804.0000

48

XCSE

Genmab A/S

25/06/2024

10:44:05 AM

1,804.0000

13

XCSE

Genmab A/S

25/06/2024

10:44:05 AM

1,804.0000

22

XCSE

Genmab A/S

25/06/2024

10:44:05 AM

1,804.0000

1

XCSE

Genmab A/S

25/06/2024

10:44:05 AM

1,804.0000

33

XCSE

Genmab A/S

25/06/2024

10:44:05 AM

1,804.0000

47

XCSE

Genmab A/S

25/06/2024

10:44:05 AM

1,804.0000

14

XCSE

Genmab A/S

25/06/2024

10:44:05 AM

1,804.0000

20

CEUX

Genmab A/S

25/06/2024

10:44:05 AM

1,804.0000

50

CEUX

Genmab A/S

25/06/2024

10:44:05 AM

1,804.0000

6

CEUX

Genmab A/S

25/06/2024

10:44:05 AM

1,804.0000

8

CEUX

Genmab A/S

25/06/2024

10:44:05 AM

1,804.0000

11

XCSE

Genmab A/S

25/06/2024

10:44:05 AM

1,804.0000

48

CEUX

Genmab A/S

25/06/2024

10:44:05 AM

1,804.0000

37

CEUX

Genmab A/S

25/06/2024

10:44:05 AM

1,803.5000

1

AQEU

Genmab A/S

25/06/2024

10:44:05 AM

1,803.5000

2

AQEU

Genmab A/S

25/06/2024

10:44:05 AM

1,803.5000

5

TQEX

Genmab A/S

25/06/2024

10:44:05 AM

1,803.5000

4

TQEX

Genmab A/S

25/06/2024

10:44:05 AM

1,803.5000

5

CEUX

Genmab A/S

25/06/2024

10:44:05 AM

1,803.5000

1

AQEU

Genmab A/S

25/06/2024

10:44:05 AM

1,803.5000

2

AQEU

Genmab A/S

25/06/2024

10:44:05 AM

1,804.0000

30

XCSE

Genmab A/S

25/06/2024

10:44:05 AM

1,804.0000

11

XCSE

Genmab A/S

25/06/2024

10:44:28 AM

1,802.5000

1

AQEU

Genmab A/S

25/06/2024

10:45:10 AM

1,802.5000

47

XCSE

Genmab A/S

25/06/2024

10:45:10 AM

1,802.5000

17

XCSE

Genmab A/S

25/06/2024

10:45:10 AM

1,802.5000

30

XCSE

Genmab A/S

25/06/2024

10:45:10 AM

1,802.5000

6

XCSE

Genmab A/S

25/06/2024

10:45:10 AM

1,802.5000

30

XCSE

Genmab A/S

25/06/2024

10:45:10 AM

1,802.5000

43

CEUX

Genmab A/S

25/06/2024

10:45:10 AM

1,802.5000

7

TQEX

69

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

10:47:53 AM

1,802.5000

3

CEUX

Genmab A/S

25/06/2024

10:47:53 AM

1,802.5000

5

AQEU

Genmab A/S

25/06/2024

10:47:53 AM

1,802.5000

5

TQEX

Genmab A/S

25/06/2024

10:49:05 AM

1,804.0000

34

TQEX

Genmab A/S

25/06/2024

10:49:26 AM

1,803.5000

66

CEUX

Genmab A/S

25/06/2024

10:49:26 AM

1,803.5000

10

CEUX

Genmab A/S

25/06/2024

10:49:26 AM

1,803.5000

11

TQEX

Genmab A/S

25/06/2024

10:49:26 AM

1,803.5000

1

CEUX

Genmab A/S

25/06/2024

10:49:26 AM

1,803.5000

73

XCSE

Genmab A/S

25/06/2024

10:50:58 AM

1,803.5000

16

CEUX

Genmab A/S

25/06/2024

10:51:04 AM

1,803.5000

36

TQEX

Genmab A/S

25/06/2024

10:51:14 AM

1,803.0000

36

CEUX

Genmab A/S

25/06/2024

10:51:14 AM

1,803.0000

36

CEUX

Genmab A/S

25/06/2024

10:51:14 AM

1,803.0000

72

CEUX

Genmab A/S

25/06/2024

10:51:14 AM

1,803.0000

7

AQEU

Genmab A/S

25/06/2024

10:51:14 AM

1,803.0000

3

AQEU

Genmab A/S

25/06/2024

10:51:14 AM

1,803.0000

7

AQEU

Genmab A/S

25/06/2024

10:51:14 AM

1,803.0000

9

TQEX

Genmab A/S

25/06/2024

10:51:14 AM

1,803.0000

2

TQEX

Genmab A/S

25/06/2024

10:51:14 AM

1,803.0000

9

TQEX

Genmab A/S

25/06/2024

10:51:14 AM

1,803.0000

19

XCSE

Genmab A/S

25/06/2024

10:51:14 AM

1,803.0000

60

XCSE

Genmab A/S

25/06/2024

10:51:14 AM

1,803.0000

17

XCSE

Genmab A/S

25/06/2024

10:51:14 AM

1,803.0000

62

XCSE

Genmab A/S

25/06/2024

10:51:14 AM

1,803.0000

35

XCSE

Genmab A/S

25/06/2024

10:51:14 AM

1,803.0000

7

CEUX

Genmab A/S

25/06/2024

10:51:14 AM

1,803.0000

2

TQEX

Genmab A/S

25/06/2024

10:51:14 AM

1,803.0000

2

CEUX

Genmab A/S

25/06/2024

10:51:14 AM

1,803.0000

2

CEUX

Genmab A/S

25/06/2024

10:51:14 AM

1,803.0000

2

CEUX

Genmab A/S

25/06/2024

10:51:14 AM

1,803.0000

38

XCSE

Genmab A/S

25/06/2024

10:51:14 AM

1,803.0000

5

XCSE

Genmab A/S

25/06/2024

10:51:14 AM

1,803.0000

24

CEUX

Genmab A/S

25/06/2024

10:52:01 AM

1,802.0000

33

XCSE

Genmab A/S

25/06/2024

10:52:01 AM

1,802.0000

21

XCSE

Genmab A/S

25/06/2024

10:52:01 AM

1,802.0000

16

XCSE

Genmab A/S

25/06/2024

10:52:01 AM

1,802.0000

2

CEUX

Genmab A/S

25/06/2024

10:54:11 AM

1,802.0000

10

XCSE

Genmab A/S

25/06/2024

10:54:11 AM

1,802.0000

35

XCSE

Genmab A/S

25/06/2024

10:54:11 AM

1,802.0000

10

CEUX

Genmab A/S

25/06/2024

10:54:33 AM

1,801.5000

2

AQEU

Genmab A/S

25/06/2024

10:54:33 AM

1,801.5000

5

TQEX

Genmab A/S

25/06/2024

10:54:33 AM

1,801.5000

16

XCSE

Genmab A/S

25/06/2024

10:54:59 AM

1,801.5000

16

XCSE

Genmab A/S

25/06/2024

10:54:59 AM

1,801.5000

122

XCSE

Genmab A/S

25/06/2024

10:54:59 AM

1,801.5000

16

CEUX

Genmab A/S

25/06/2024

10:54:59 AM

1,801.5000

16

CEUX

Genmab A/S

25/06/2024

10:54:59 AM

1,801.5000

16

CEUX

70

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

10:54:59 AM

1,801.5000

16

CEUX

Genmab A/S

25/06/2024

10:54:59 AM

1,801.5000

16

CEUX

Genmab A/S

25/06/2024

10:54:59 AM

1,801.5000

16

CEUX

Genmab A/S

25/06/2024

10:54:59 AM

1,801.5000

16

CEUX

Genmab A/S

25/06/2024

10:54:59 AM

1,801.5000

16

CEUX

Genmab A/S

25/06/2024

10:54:59 AM

1,801.5000

12

CEUX

Genmab A/S

25/06/2024

10:54:59 AM

1,801.5000

2

AQEU

Genmab A/S

25/06/2024

10:54:59 AM

1,801.5000

5

TQEX

Genmab A/S

25/06/2024

10:54:59 AM

1,801.5000

12

XCSE

Genmab A/S

25/06/2024

10:54:59 AM

1,801.5000

39

CEUX

Genmab A/S

25/06/2024

10:56:15 AM

1,801.5000

89

CEUX

Genmab A/S

25/06/2024

10:56:15 AM

1,801.0000

19

CEUX

Genmab A/S

25/06/2024

10:56:15 AM

1,801.0000

2

AQEU

Genmab A/S

25/06/2024

10:56:15 AM

1,801.0000

29

AQEU

Genmab A/S

25/06/2024

10:56:15 AM

1,801.0000

2

AQEU

Genmab A/S

25/06/2024

10:56:15 AM

1,801.0000

11

AQEU

Genmab A/S

25/06/2024

10:56:15 AM

1,801.5000

13

AQEU

Genmab A/S

25/06/2024

10:56:15 AM

1,801.5000

10

TQEX

Genmab A/S

25/06/2024

10:56:15 AM

1,801.5000

4

TQEX

Genmab A/S

25/06/2024

10:56:15 AM

1,801.5000

15

XCSE

Genmab A/S

25/06/2024

10:56:15 AM

1,801.5000

84

XCSE

Genmab A/S

25/06/2024

10:56:15 AM

1,801.0000

19

XCSE

Genmab A/S

25/06/2024

10:56:15 AM

1,801.0000

4

XCSE

Genmab A/S

25/06/2024

10:56:15 AM

1,801.0000

19

CEUX

Genmab A/S

25/06/2024

10:56:15 AM

1,801.0000

5

TQEX

Genmab A/S

25/06/2024

10:56:15 AM

1,801.0000

4

CEUX

Genmab A/S

25/06/2024

10:56:15 AM

1,801.0000

4

CEUX

Genmab A/S

25/06/2024

10:56:15 AM

1,801.0000

8

CEUX

Genmab A/S

25/06/2024

10:56:15 AM

1,801.0000

15

XCSE

Genmab A/S

25/06/2024

10:56:15 AM

1,801.0000

11

XCSE

Genmab A/S

25/06/2024

10:56:15 AM

1,801.0000

5

TQEX

Genmab A/S

25/06/2024

10:56:15 AM

1,801.0000

3

TQEX

Genmab A/S

25/06/2024

10:56:15 AM

1,801.0000

3

CEUX

Genmab A/S

25/06/2024

10:56:15 AM

1,801.0000

1

CEUX

Genmab A/S

25/06/2024

10:56:15 AM

1,801.0000

2

AQEU

Genmab A/S

25/06/2024

10:56:15 AM

1,801.0000

1

AQEU

Genmab A/S

25/06/2024

10:56:15 AM

1,801.0000

12

XCSE

Genmab A/S

25/06/2024

10:56:15 AM

1,801.0000

3

CEUX

Genmab A/S

25/06/2024

10:56:15 AM

1,801.0000

7

CEUX

Genmab A/S

25/06/2024

10:56:15 AM

1,801.0000

2

AQEU

Genmab A/S

25/06/2024

10:56:15 AM

1,801.0000

7

XCSE

Genmab A/S

25/06/2024

10:56:15 AM

1,801.0000

4

XCSE

Genmab A/S

25/06/2024

10:56:15 AM

1,801.0000

5

TQEX

Genmab A/S

25/06/2024

10:56:15 AM

1,801.0000

2

CEUX

Genmab A/S

25/06/2024

10:56:15 AM

1,801.0000

8

CEUX

Genmab A/S

25/06/2024

10:56:15 AM

1,801.0000

35

CEUX

Genmab A/S

25/06/2024

10:56:15 AM

1,801.0000

2

CEUX

Genmab A/S

25/06/2024

10:56:15 AM

1,801.0000

1

CEUX

71

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

10:56:15 AM

1,801.0000

30

XCSE

Genmab A/S

25/06/2024

10:56:15 AM

1,801.0000

6

XCSE

Genmab A/S

25/06/2024

10:59:13 AM

1,800.5000

18

XCSE

Genmab A/S

25/06/2024

10:59:13 AM

1,800.5000

18

XCSE

Genmab A/S

25/06/2024

10:59:13 AM

1,800.5000

18

CEUX

Genmab A/S

25/06/2024

10:59:13 AM

1,800.5000

18

CEUX

Genmab A/S

25/06/2024

10:59:13 AM

1,800.5000

14

CEUX

Genmab A/S

25/06/2024

10:59:13 AM

1,800.5000

5

TQEX

Genmab A/S

25/06/2024

10:59:13 AM

1,800.5000

5

TQEX

Genmab A/S

25/06/2024

10:59:13 AM

1,800.5000

18

CEUX

Genmab A/S

25/06/2024

10:59:13 AM

1,800.5000

3

CEUX

Genmab A/S

25/06/2024

10:59:13 AM

1,800.5000

36

CEUX

Genmab A/S

25/06/2024

10:59:13 AM

1,800.5000

2

AQEU

Genmab A/S

25/06/2024

10:59:13 AM

1,800.5000

5

TQEX

Genmab A/S

25/06/2024

10:59:13 AM

1,800.5000

18

XCSE

Genmab A/S

25/06/2024

10:59:13 AM

1,800.5000

18

XCSE

Genmab A/S

25/06/2024

10:59:13 AM

1,800.5000

5

XCSE

Genmab A/S

25/06/2024

10:59:13 AM

1,800.5000

5

CEUX

Genmab A/S

25/06/2024

10:59:13 AM

1,800.5000

2

TQEX

Genmab A/S

25/06/2024

10:59:13 AM

1,800.5000

30

XCSE

Genmab A/S

25/06/2024

11:07:23 AM

1,799.5000

23

XCSE

Genmab A/S

25/06/2024

11:07:23 AM

1,799.5000

19

XCSE

Genmab A/S

25/06/2024

11:07:25 AM

1,799.5000

2

AQEU

Genmab A/S

25/06/2024

11:08:02 AM

1,799.0000

22

CEUX

Genmab A/S

25/06/2024

11:08:02 AM

1,799.0000

9

CEUX

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

5

AQEU

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

3

AQEU

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

3

AQEU

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

9

AQEU

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

5

AQEU

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

3

AQEU

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

3

AQEU

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

5

AQEU

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

3

AQEU

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

3

AQEU

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

8

AQEU

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

5

AQEU

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

3

AQEU

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

3

AQEU

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

7

AQEU

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

16

AQEU

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

3

AQEU

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

2

AQEU

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

1

AQEU

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

2

AQEU

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

1

AQEU

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

2

AQEU

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

1

AQEU

72

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

3

AQEU

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

2

AQEU

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

3

AQEU

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

3

AQEU

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

3

AQEU

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

37

XCSE

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

21

XCSE

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

21

XCSE

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

59

XCSE

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

21

XCSE

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

36

XCSE

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

21

XCSE

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

21

XCSE

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

21

XCSE

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

16

XCSE

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

38

XCSE

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

30

XCSE

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

22

XCSE

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

30

XCSE

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

22

XCSE

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

22

XCSE

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

22

XCSE

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

22

XCSE

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

22

XCSE

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

22

XCSE

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

22

XCSE

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

22

XCSE

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

22

XCSE

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

22

XCSE

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

13

XCSE

Genmab A/S

25/06/2024

11:08:02 AM

1,799.0000

7

XCSE

Genmab A/S

25/06/2024

11:08:02 AM

1,799.0000

16

XCSE

Genmab A/S

25/06/2024

11:08:02 AM

1,799.0000

32

XCSE

Genmab A/S

25/06/2024

11:08:02 AM

1,799.0000

16

XCSE

Genmab A/S

25/06/2024

11:08:02 AM

1,799.0000

22

CEUX

Genmab A/S

25/06/2024

11:08:02 AM

1,799.0000

15

CEUX

Genmab A/S

25/06/2024

11:08:02 AM

1,799.0000

3

AQEU

Genmab A/S

25/06/2024

11:08:02 AM

1,799.0000

41

AQEU

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

2

AQEU

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

3

AQEU

Genmab A/S

25/06/2024

11:08:02 AM

1,799.5000

17

AQEU

Genmab A/S

25/06/2024

11:08:02 AM

1,799.0000

5

TQEX

Genmab A/S

25/06/2024

11:08:02 AM

1,799.0000

3

XCSE

Genmab A/S

25/06/2024

11:08:02 AM

1,798.5000

10

CEUX

Genmab A/S

25/06/2024

11:08:02 AM

1,799.0000

18

CEUX

Genmab A/S

25/06/2024

11:08:02 AM

1,799.0000

13

CEUX

Genmab A/S

25/06/2024

11:14:12 AM

1,798.0000

49

XCSE

Genmab A/S

25/06/2024

11:14:12 AM

1,798.0000

45

CEUX

73

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

11:14:12 AM

1,798.0000

15

CEUX

Genmab A/S

25/06/2024

11:14:12 AM

1,798.0000

3

CEUX

Genmab A/S

25/06/2024

11:14:12 AM

1,798.0000

7

AQEU

Genmab A/S

25/06/2024

11:14:12 AM

1,798.0000

6

TQEX

Genmab A/S

25/06/2024

11:14:12 AM

1,798.0000

6

TQEX

Genmab A/S

25/06/2024

11:14:12 AM

1,798.0000

15

TQEX

Genmab A/S

25/06/2024

11:14:12 AM

1,798.0000

6

TQEX

Genmab A/S

25/06/2024

11:14:12 AM

1,798.0000

13

TQEX

Genmab A/S

25/06/2024

11:14:12 AM

1,798.0000

36

CEUX

Genmab A/S

25/06/2024

11:14:12 AM

1,798.0000

6

XCSE

Genmab A/S

25/06/2024

11:14:12 AM

1,798.0000

13

XCSE

Genmab A/S

25/06/2024

11:14:12 AM

1,798.0000

1

CEUX

Genmab A/S

25/06/2024

11:17:59 AM

1,798.5000

10

XCSE

Genmab A/S

25/06/2024

11:20:24 AM

1,799.5000

15

CEUX

Genmab A/S

25/06/2024

11:20:24 AM

1,799.5000

13

CEUX

Genmab A/S

25/06/2024

11:20:24 AM

1,799.5000

15

CEUX

Genmab A/S

25/06/2024

11:20:24 AM

1,799.5000

13

CEUX

Genmab A/S

25/06/2024

11:20:24 AM

1,799.5000

15

CEUX

Genmab A/S

25/06/2024

11:20:24 AM

1,799.5000

13

CEUX

Genmab A/S

25/06/2024

11:20:24 AM

1,799.5000

11

CEUX

Genmab A/S

25/06/2024

11:20:24 AM

1,799.5000

15

XCSE

Genmab A/S

25/06/2024

11:20:24 AM

1,799.5000

11

XCSE

Genmab A/S

25/06/2024

11:20:24 AM

1,799.5000

5

TQEX

Genmab A/S

25/06/2024

11:20:24 AM

1,799.5000

5

TQEX

Genmab A/S

25/06/2024

11:20:24 AM

1,799.5000

15

CEUX

Genmab A/S

25/06/2024

11:20:24 AM

1,799.5000

9

CEUX

Genmab A/S

25/06/2024

11:20:25 AM

1,800.0000

1

XCSE

Genmab A/S

25/06/2024

11:21:38 AM

1,800.5000

46

XCSE

Genmab A/S

25/06/2024

11:21:38 AM

1,800.5000

51

XCSE

Genmab A/S

25/06/2024

11:21:38 AM

1,800.5000

66

XCSE

Genmab A/S

25/06/2024

11:21:38 AM

1,800.5000

2

XCSE

Genmab A/S

25/06/2024

11:21:38 AM

1,800.5000

15

XCSE

Genmab A/S

25/06/2024

11:21:38 AM

1,800.5000

31

XCSE

Genmab A/S

25/06/2024

11:21:38 AM

1,800.5000

51

XCSE

Genmab A/S

25/06/2024

11:21:38 AM

1,800.5000

31

CEUX

Genmab A/S

25/06/2024

11:21:38 AM

1,800.5000

15

CEUX

Genmab A/S

25/06/2024

11:21:38 AM

1,800.5000

35

CEUX

Genmab A/S

25/06/2024

11:21:38 AM

1,800.5000

5

CEUX

Genmab A/S

25/06/2024

11:25:48 AM

1,804.0000

9

CEUX

Genmab A/S

25/06/2024

11:25:48 AM

1,804.0000

17

XCSE

Genmab A/S

25/06/2024

11:25:48 AM

1,804.0000

30

XCSE

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

36

CEUX

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

15

CEUX

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

5

AQEU

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

5

AQEU

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

2

AQEU

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

20

XCSE

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

20

XCSE

74

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

10

XCSE

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

30

XCSE

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

20

XCSE

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

6

XCSE

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

14

XCSE

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

6

XCSE

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

35

XCSE

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

20

XCSE

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

10

XCSE

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

20

XCSE

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

20

XCSE

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

19

XCSE

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

1

XCSE

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

20

XCSE

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

1

XCSE

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

20

XCSE

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

20

XCSE

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

14

XCSE

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

15

CEUX

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

9

CEUX

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

2

AQEU

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

5

AQEU

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

9

AQEU

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

20

TQEX

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

7

TQEX

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

7

TQEX

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

6

TQEX

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

2

AQEU

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

3

AQEU

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

14

XCSE

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

6

XCSE

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

14

XCSE

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

6

XCSE

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

30

XCSE

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

30

XCSE

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

30

XCSE

Genmab A/S

25/06/2024

11:25:55 AM

1,804.0000

1

CEUX

Genmab A/S

25/06/2024

11:26:47 AM

1,804.0000

38

XCSE

Genmab A/S

25/06/2024

11:27:07 AM

1,803.0000

6

XCSE

Genmab A/S

25/06/2024

11:27:31 AM

1,802.5000

1

TQEX

Genmab A/S

25/06/2024

11:27:31 AM

1,803.0000

9

CEUX

Genmab A/S

25/06/2024

11:27:31 AM

1,803.0000

9

CEUX

Genmab A/S

25/06/2024

11:27:31 AM

1,803.0000

9

CEUX

Genmab A/S

25/06/2024

11:27:31 AM

1,803.0000

6

CEUX

Genmab A/S

25/06/2024

11:27:31 AM

1,803.0000

9

CEUX

Genmab A/S

25/06/2024

11:27:31 AM

1,803.0000

9

CEUX

Genmab A/S

25/06/2024

11:27:31 AM

1,803.0000

6

CEUX

Genmab A/S

25/06/2024

11:27:31 AM

1,803.0000

3

CEUX

75

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

11:27:31 AM

1,803.0000

1

AQEU

Genmab A/S

25/06/2024

11:27:31 AM

1,803.0000

5

TQEX

Genmab A/S

25/06/2024

11:27:31 AM

1,803.0000

5

TQEX

Genmab A/S

25/06/2024

11:27:31 AM

1,803.0000

16

TQEX

Genmab A/S

25/06/2024

11:27:31 AM

1,803.0000

5

TQEX

Genmab A/S

25/06/2024

11:27:31 AM

1,803.0000

15

TQEX

Genmab A/S

25/06/2024

11:27:31 AM

1,803.0000

8

XCSE

Genmab A/S

25/06/2024

11:27:31 AM

1,803.0000

8

XCSE

Genmab A/S

25/06/2024

11:27:31 AM

1,803.0000

38

XCSE

Genmab A/S

25/06/2024

11:27:31 AM

1,803.0000

8

XCSE

Genmab A/S

25/06/2024

11:27:31 AM

1,802.5000

19

XCSE

Genmab A/S

25/06/2024

11:27:31 AM

1,802.5000

14

XCSE

Genmab A/S

25/06/2024

11:27:31 AM

1,802.5000

4

XCSE

Genmab A/S

25/06/2024

11:27:31 AM

1,802.5000

19

XCSE

Genmab A/S

25/06/2024

11:27:31 AM

1,802.5000

17

XCSE

Genmab A/S

25/06/2024

11:27:31 AM

1,802.5000

1

XCSE

Genmab A/S

25/06/2024

11:27:31 AM

1,802.5000

14

XCSE

Genmab A/S

25/06/2024

11:27:31 AM

1,802.5000

1

XCSE

Genmab A/S

25/06/2024

11:27:31 AM

1,802.5000

1

XCSE

Genmab A/S

25/06/2024

11:27:31 AM

1,803.0000

2

XCSE

Genmab A/S

25/06/2024

11:27:31 AM

1,802.5000

2

CEUX

Genmab A/S

25/06/2024

11:27:31 AM

1,802.5000

17

CEUX

Genmab A/S

25/06/2024

11:27:31 AM

1,802.5000

5

CEUX

Genmab A/S

25/06/2024

11:27:31 AM

1,802.5000

13

CEUX

Genmab A/S

25/06/2024

11:27:31 AM

1,802.5000

19

CEUX

Genmab A/S

25/06/2024

11:27:31 AM

1,802.5000

5

CEUX

Genmab A/S

25/06/2024

11:27:31 AM

1,802.5000

2

AQEU

Genmab A/S

25/06/2024

11:27:31 AM

1,802.5000

2

AQEU

Genmab A/S

25/06/2024

11:27:31 AM

1,802.5000

2

TQEX

Genmab A/S

25/06/2024

11:27:31 AM

1,802.5000

5

TQEX

Genmab A/S

25/06/2024

11:27:31 AM

1,802.5000

5

TQEX

Genmab A/S

25/06/2024

11:27:31 AM

1,802.5000

1

TQEX

Genmab A/S

25/06/2024

11:27:31 AM

1,802.5000

1

TQEX

Genmab A/S

25/06/2024

11:27:31 AM

1,802.5000

4

TQEX

Genmab A/S

25/06/2024

11:27:31 AM

1,802.5000

5

TQEX

Genmab A/S

25/06/2024

11:27:31 AM

1,802.5000

2

TQEX

Genmab A/S

25/06/2024

11:27:31 AM

1,802.5000

10

CEUX

Genmab A/S

25/06/2024

11:27:31 AM

1,802.5000

1

XCSE

Genmab A/S

25/06/2024

11:27:31 AM

1,802.5000

1

XCSE

Genmab A/S

25/06/2024

11:27:31 AM

1,802.5000

1

XCSE

Genmab A/S

25/06/2024

11:27:31 AM

1,802.5000

5

XCSE

Genmab A/S

25/06/2024

11:27:31 AM

1,803.0000

23

XCSE

Genmab A/S

25/06/2024

11:27:31 AM

1,802.5000

8

CEUX

Genmab A/S

25/06/2024

11:27:31 AM

1,802.5000

2

AQEU

Genmab A/S

25/06/2024

11:27:31 AM

1,802.5000

5

TQEX

Genmab A/S

25/06/2024

11:27:31 AM

1,802.5000

1

XCSE

Genmab A/S

25/06/2024

11:27:31 AM

1,802.5000

17

XCSE

Genmab A/S

25/06/2024

11:27:31 AM

1,802.5000

45

XCSE

76

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

11:31:01 AM

1,804.0000

6

CEUX

Genmab A/S

25/06/2024

11:31:01 AM

1,804.0000

11

CEUX

Genmab A/S

25/06/2024

11:31:01 AM

1,804.0000

5

TQEX

Genmab A/S

25/06/2024

11:31:01 AM

1,804.0000

18

XCSE

Genmab A/S

25/06/2024

11:31:01 AM

1,804.0000

5

TQEX

Genmab A/S

25/06/2024

11:31:01 AM

1,804.0000

11

CEUX

Genmab A/S

25/06/2024

11:31:01 AM

1,804.0000

2

CEUX

Genmab A/S

25/06/2024

11:31:01 AM

1,804.0000

18

XCSE

Genmab A/S

25/06/2024

11:31:01 AM

1,804.0000

4

CEUX

Genmab A/S

25/06/2024

11:32:56 AM

1,804.0000

3

AQEU

Genmab A/S

25/06/2024

11:32:56 AM

1,804.0000

3

AQEU

Genmab A/S

25/06/2024

11:32:56 AM

1,804.0000

5

TQEX

Genmab A/S

25/06/2024

11:32:56 AM

1,804.0000

16

XCSE

Genmab A/S

25/06/2024

11:32:56 AM

1,804.0000

27

XCSE

Genmab A/S

25/06/2024

11:32:56 AM

1,804.0000

16

XCSE

Genmab A/S

25/06/2024

11:32:56 AM

1,804.0000

11

XCSE

Genmab A/S

25/06/2024

11:34:27 AM

1,803.5000

1

AQEU

Genmab A/S

25/06/2024

11:34:27 AM

1,803.5000

1

AQEU

Genmab A/S

25/06/2024

11:35:25 AM

1,803.5000

2

AQEU

Genmab A/S

25/06/2024

11:35:25 AM

1,803.5000

22

CEUX

Genmab A/S

25/06/2024

11:36:02 AM

1,804.0000

11

CEUX

Genmab A/S

25/06/2024

11:36:02 AM

1,804.0000

5

TQEX

Genmab A/S

25/06/2024

11:36:02 AM

1,804.0000

10

XCSE

Genmab A/S

25/06/2024

11:36:02 AM

1,804.0000

10

XCSE

Genmab A/S

25/06/2024

11:36:02 AM

1,804.0000

22

XCSE

Genmab A/S

25/06/2024

11:36:02 AM

1,804.0000

10

XCSE

Genmab A/S

25/06/2024

11:36:02 AM

1,804.0000

10

XCSE

Genmab A/S

25/06/2024

11:36:02 AM

1,804.0000

1

XCSE

Genmab A/S

25/06/2024

11:36:02 AM

1,804.0000

11

CEUX

Genmab A/S

25/06/2024

11:36:02 AM

1,804.0000

5

TQEX

Genmab A/S

25/06/2024

11:38:06 AM

1,803.5000

8

CEUX

Genmab A/S

25/06/2024

11:38:06 AM

1,803.5000

3

CEUX

Genmab A/S

25/06/2024

11:38:06 AM

1,803.5000

5

CEUX

Genmab A/S

25/06/2024

11:38:06 AM

1,803.5000

6

CEUX

Genmab A/S

25/06/2024

11:38:06 AM

1,803.5000

1

AQEU

Genmab A/S

25/06/2024

11:38:06 AM

1,803.5000

5

TQEX

Genmab A/S

25/06/2024

11:38:06 AM

1,803.5000

5

TQEX

Genmab A/S

25/06/2024

11:38:06 AM

1,803.5000

3

XCSE

Genmab A/S

25/06/2024

11:38:06 AM

1,803.5000

5

XCSE

Genmab A/S

25/06/2024

11:40:17 AM

1,803.5000

87

XCSE

Genmab A/S

25/06/2024

11:40:17 AM

1,803.5000

5

XCSE

Genmab A/S

25/06/2024

11:41:13 AM

1,803.5000

13

CEUX

Genmab A/S

25/06/2024

11:41:13 AM

1,803.5000

6

AQEU

Genmab A/S

25/06/2024

11:41:13 AM

1,803.5000

5

TQEX

Genmab A/S

25/06/2024

11:43:39 AM

1,804.0000

10

CEUX

Genmab A/S

25/06/2024

11:43:39 AM

1,804.0000

6

CEUX

Genmab A/S

25/06/2024

11:43:39 AM

1,804.0000

8

CEUX

Genmab A/S

25/06/2024

11:43:39 AM

1,804.0000

12

CEUX

77

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

11:43:39 AM

1,804.0000

10

CEUX

Genmab A/S

25/06/2024

11:43:39 AM

1,804.0000

18

CEUX

Genmab A/S

25/06/2024

11:43:39 AM

1,804.0000

50

CEUX

Genmab A/S

25/06/2024

11:43:39 AM

1,804.0000

20

CEUX

Genmab A/S

25/06/2024

11:43:39 AM

1,804.0000

28

CEUX

Genmab A/S

25/06/2024

11:43:39 AM

1,804.0000

46

CEUX

Genmab A/S

25/06/2024

11:43:39 AM

1,804.0000

18

CEUX

Genmab A/S

25/06/2024

11:43:39 AM

1,804.0000

116

CEUX

Genmab A/S

25/06/2024

11:43:39 AM

1,804.0000

46

CEUX

Genmab A/S

25/06/2024

11:43:39 AM

1,804.0000

10

CEUX

Genmab A/S

25/06/2024

11:43:39 AM

1,804.0000

50

CEUX

Genmab A/S

25/06/2024

11:43:39 AM

1,804.0000

50

CEUX

Genmab A/S

25/06/2024

11:43:39 AM

1,804.0000

4

CEUX

Genmab A/S

25/06/2024

11:43:39 AM

1,804.0000

5

CEUX

Genmab A/S

25/06/2024

11:43:39 AM

1,804.0000

4

CEUX

Genmab A/S

25/06/2024

11:43:39 AM

1,804.0000

5

CEUX

Genmab A/S

25/06/2024

11:43:39 AM

1,804.0000

4

CEUX

Genmab A/S

25/06/2024

11:43:39 AM

1,804.0000

4

CEUX

Genmab A/S

25/06/2024

11:43:39 AM

1,804.0000

20

CEUX

Genmab A/S

25/06/2024

11:43:39 AM

1,804.0000

22

CEUX

Genmab A/S

25/06/2024

11:43:39 AM

1,804.0000

4

CEUX

Genmab A/S

25/06/2024

11:43:39 AM

1,804.0000

42

CEUX

Genmab A/S

25/06/2024

11:43:39 AM

1,804.0000

5

CEUX

Genmab A/S

25/06/2024

11:43:39 AM

1,804.0000

1

CEUX

Genmab A/S

25/06/2024

11:43:39 AM

1,804.0000

5

CEUX

Genmab A/S

25/06/2024

11:43:39 AM

1,804.0000

5

CEUX

Genmab A/S

25/06/2024

11:43:40 AM

1,804.0000

20

CEUX

Genmab A/S

25/06/2024

11:43:47 AM

1,803.5000

18

XCSE

Genmab A/S

25/06/2024

11:44:14 AM

1,803.5000

35

CEUX

Genmab A/S

25/06/2024

11:44:14 AM

1,803.5000

5

AQEU

Genmab A/S

25/06/2024

11:44:14 AM

1,803.5000

4

TQEX

Genmab A/S

25/06/2024

11:44:14 AM

1,803.5000

2

TQEX

Genmab A/S

25/06/2024

11:44:14 AM

1,803.5000

2

TQEX

Genmab A/S

25/06/2024

11:44:14 AM

1,803.5000

37

XCSE

Genmab A/S

25/06/2024

11:44:14 AM

1,803.5000

1

XCSE

Genmab A/S

25/06/2024

11:44:14 AM

1,803.5000

8

XCSE

Genmab A/S

25/06/2024

11:46:39 AM

1,803.0000

9

CEUX

Genmab A/S

25/06/2024

11:46:39 AM

1,803.0000

1

AQEU

Genmab A/S

25/06/2024

11:46:39 AM

1,803.0000

5

TQEX

Genmab A/S

25/06/2024

11:46:39 AM

1,803.0000

5

TQEX

Genmab A/S

25/06/2024

11:46:39 AM

1,803.0000

5

TQEX

Genmab A/S

25/06/2024

11:46:39 AM

1,803.0000

9

XCSE

Genmab A/S

25/06/2024

11:48:23 AM

1,803.0000

1

AQEU

Genmab A/S

25/06/2024

11:48:23 AM

1,803.0000

5

TQEX

Genmab A/S

25/06/2024

11:48:51 AM

1,804.0000

3

AQEU

Genmab A/S

25/06/2024

11:48:52 AM

1,804.0000

2

AQEU

Genmab A/S

25/06/2024

11:48:52 AM

1,804.0000

2

AQEU

Genmab A/S

25/06/2024

11:49:55 AM

1,804.0000

2

AQEU

78

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

11:49:55 AM

1,804.0000

2

AQEU

Genmab A/S

25/06/2024

11:49:55 AM

1,804.0000

2

AQEU

Genmab A/S

25/06/2024

11:49:55 AM

1,804.0000

2

AQEU

Genmab A/S

25/06/2024

11:49:55 AM

1,804.0000

2

AQEU

Genmab A/S

25/06/2024

11:49:56 AM

1,804.0000

2

AQEU

Genmab A/S

25/06/2024

11:49:56 AM

1,804.0000

2

AQEU

Genmab A/S

25/06/2024

11:49:56 AM

1,804.0000

2

AQEU

Genmab A/S

25/06/2024

11:49:56 AM

1,804.0000

2

AQEU

Genmab A/S

25/06/2024

11:49:57 AM

1,804.0000

2

AQEU

Genmab A/S

25/06/2024

11:49:57 AM

1,804.0000

2

AQEU

Genmab A/S

25/06/2024

11:50:07 AM

1,803.5000

40

CEUX

Genmab A/S

25/06/2024

11:50:07 AM

1,803.5000

4

CEUX

Genmab A/S

25/06/2024

11:50:07 AM

1,803.5000

7

AQEU

Genmab A/S

25/06/2024

11:50:07 AM

1,803.5000

7

AQEU

Genmab A/S

25/06/2024

11:50:07 AM

1,803.5000

7

AQEU

Genmab A/S

25/06/2024

11:50:07 AM

1,803.5000

7

TQEX

Genmab A/S

25/06/2024

11:50:07 AM

1,803.5000

50

XCSE

Genmab A/S

25/06/2024

11:50:07 AM

1,803.5000

6

XCSE

Genmab A/S

25/06/2024

11:50:07 AM

1,803.5000

56

XCSE

Genmab A/S

25/06/2024

11:50:07 AM

1,803.5000

8

CEUX

Genmab A/S

25/06/2024

11:50:07 AM

1,803.5000

7

AQEU

Genmab A/S

25/06/2024

11:50:07 AM

1,803.5000

13

AQEU

Genmab A/S

25/06/2024

11:50:07 AM

1,803.5000

7

TQEX

Genmab A/S

25/06/2024

11:50:07 AM

1,803.5000

20

TQEX

Genmab A/S

25/06/2024

11:51:28 AM

1,803.5000

19

CEUX

Genmab A/S

25/06/2024

11:51:28 AM

1,803.5000

11

CEUX

Genmab A/S

25/06/2024

11:52:11 AM

1,805.0000

20

XCSE

Genmab A/S

25/06/2024

11:52:11 AM

1,805.0000

28

XCSE

Genmab A/S

25/06/2024

11:52:11 AM

1,805.0000

20

XCSE

Genmab A/S

25/06/2024

11:53:07 AM

1,805.0000

34

XCSE

Genmab A/S

25/06/2024

11:53:07 AM

1,805.0000

48

XCSE

Genmab A/S

25/06/2024

11:53:07 AM

1,805.0000

55

XCSE

Genmab A/S

25/06/2024

11:53:07 AM

1,805.0000

44

CEUX

Genmab A/S

25/06/2024

11:53:07 AM

1,805.0000

44

CEUX

Genmab A/S

25/06/2024

11:53:07 AM

1,805.0000

6

CEUX

Genmab A/S

25/06/2024

11:53:07 AM

1,805.0000

44

CEUX

Genmab A/S

25/06/2024

11:53:07 AM

1,805.0000

10

CEUX

Genmab A/S

25/06/2024

11:53:07 AM

1,805.0000

7

AQEU

Genmab A/S

25/06/2024

11:53:07 AM

1,805.0000

7

AQEU

Genmab A/S

25/06/2024

11:53:07 AM

1,805.0000

4

AQEU

Genmab A/S

25/06/2024

11:53:07 AM

1,805.0000

3

AQEU

Genmab A/S

25/06/2024

11:53:07 AM

1,805.0000

4

AQEU

Genmab A/S

25/06/2024

11:53:07 AM

1,805.0000

6

TQEX

Genmab A/S

25/06/2024

11:53:07 AM

1,805.0000

8

TQEX

Genmab A/S

25/06/2024

11:53:07 AM

1,805.0000

4

CEUX

Genmab A/S

25/06/2024

11:53:07 AM

1,805.0000

40

CEUX

Genmab A/S

25/06/2024

11:53:07 AM

1,805.0000

14

CEUX

Genmab A/S

25/06/2024

11:53:07 AM

1,805.0000

44

CEUX

79

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

11:53:07 AM

1,805.0000

44

CEUX

Genmab A/S

25/06/2024

11:53:07 AM

1,805.0000

10

CEUX

Genmab A/S

25/06/2024

11:53:07 AM

1,805.0000

6

TQEX

Genmab A/S

25/06/2024

11:53:07 AM

1,805.0000

6

TQEX

Genmab A/S

25/06/2024

11:53:07 AM

1,805.0000

46

XCSE

Genmab A/S

25/06/2024

11:53:07 AM

1,805.0000

2

XCSE

Genmab A/S

25/06/2024

11:53:07 AM

1,805.0000

7

XCSE

Genmab A/S

25/06/2024

11:53:07 AM

1,805.0000

3

XCSE

Genmab A/S

25/06/2024

11:53:08 AM

1,805.0000

30

CEUX

Genmab A/S

25/06/2024

11:53:08 AM

1,805.0000

30

XCSE

Genmab A/S

25/06/2024

11:53:08 AM

1,805.0000

8

XCSE

Genmab A/S

25/06/2024

11:53:08 AM

1,805.0000

50

XCSE

Genmab A/S

25/06/2024

11:53:08 AM

1,805.0000

48

XCSE

Genmab A/S

25/06/2024

11:53:08 AM

1,805.0000

6

TQEX

Genmab A/S

25/06/2024

11:53:08 AM

1,805.0000

7

AQEU

Genmab A/S

25/06/2024

11:53:08 AM

1,805.0000

3

AQEU

Genmab A/S

25/06/2024

11:53:08 AM

1,805.0000

2

CEUX

Genmab A/S

25/06/2024

11:53:08 AM

1,805.0000

6

TQEX

Genmab A/S

25/06/2024

11:53:08 AM

1,805.0000

3

TQEX

Genmab A/S

25/06/2024

11:53:08 AM

1,805.0000

48

XCSE

Genmab A/S

25/06/2024

11:53:08 AM

1,805.0000

7

XCSE

Genmab A/S

25/06/2024

11:53:08 AM

1,805.0000

3

AQEU

Genmab A/S

25/06/2024

11:53:08 AM

1,805.0000

30

XCSE

Genmab A/S

25/06/2024

11:53:08 AM

1,805.0000

105

XCSE

Genmab A/S

25/06/2024

11:53:08 AM

1,805.0000

28

XCSE

Genmab A/S

25/06/2024

11:59:53 AM

1,802.0000

11

AQEU

Genmab A/S

25/06/2024

11:59:53 AM

1,802.0000

1

AQEU

Genmab A/S

25/06/2024

11:59:53 AM

1,802.0000

11

TQEX

Genmab A/S

25/06/2024

11:59:53 AM

1,802.0000

5

TQEX

Genmab A/S

25/06/2024

12:03:25 PM

1,802.0000

75

CEUX

Genmab A/S

25/06/2024

12:03:25 PM

1,802.0000

11

CEUX

Genmab A/S

25/06/2024

12:03:25 PM

1,802.0000

11

CEUX

Genmab A/S

25/06/2024

12:03:25 PM

1,802.0000

11

CEUX

Genmab A/S

25/06/2024

12:03:25 PM

1,802.0000

3

CEUX

Genmab A/S

25/06/2024

12:03:25 PM

1,802.0000

10

CEUX

Genmab A/S

25/06/2024

12:03:25 PM

1,802.0000

5

TQEX

Genmab A/S

25/06/2024

12:03:25 PM

1,802.0000

5

TQEX

Genmab A/S

25/06/2024

12:03:25 PM

1,802.0000

62

XCSE

Genmab A/S

25/06/2024

12:03:25 PM

1,802.0000

21

XCSE

Genmab A/S

25/06/2024

12:03:25 PM

1,802.0000

10

XCSE

Genmab A/S

25/06/2024

12:03:25 PM

1,802.0000

51

XCSE

Genmab A/S

25/06/2024

12:03:25 PM

1,802.0000

39

XCSE

Genmab A/S

25/06/2024

12:03:25 PM

1,802.0000

5

TQEX

Genmab A/S

25/06/2024

12:03:25 PM

1,802.0000

2

XCSE

Genmab A/S

25/06/2024

12:03:25 PM

1,802.0000

35

XCSE

Genmab A/S

25/06/2024

12:03:25 PM

1,802.0000

16

XCSE

Genmab A/S

25/06/2024

12:03:25 PM

1,802.0000

16

XCSE

Genmab A/S

25/06/2024

12:03:25 PM

1,802.0000

35

XCSE

80

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

12:03:25 PM

1,802.0000

27

XCSE

Genmab A/S

25/06/2024

12:03:25 PM

1,802.0000

3

XCSE

Genmab A/S

25/06/2024

12:03:25 PM

1,802.0000

7

XCSE

Genmab A/S

25/06/2024

12:03:25 PM

1,802.0000

16

XCSE

Genmab A/S

25/06/2024

12:03:25 PM

1,802.0000

11

XCSE

Genmab A/S

25/06/2024

12:03:25 PM

1,802.0000

10

XCSE

Genmab A/S

25/06/2024

12:04:34 PM

1,801.0000

79

XCSE

Genmab A/S

25/06/2024

12:04:34 PM

1,801.0000

9

TQEX

Genmab A/S

25/06/2024

12:04:34 PM

1,801.0000

72

CEUX

Genmab A/S

25/06/2024

12:04:34 PM

1,801.0000

10

AQEU

Genmab A/S

25/06/2024

12:04:34 PM

1,801.0000

2

TQEX

Genmab A/S

25/06/2024

12:04:34 PM

1,800.5000

44

XCSE

Genmab A/S

25/06/2024

12:04:34 PM

1,800.5000

131

XCSE

Genmab A/S

25/06/2024

12:05:52 PM

1,800.0000

24

XCSE

Genmab A/S

25/06/2024

12:05:52 PM

1,800.0000

18

XCSE

Genmab A/S

25/06/2024

12:05:52 PM

1,800.0000

24

XCSE

Genmab A/S

25/06/2024

12:05:52 PM

1,800.0000

42

XCSE

Genmab A/S

25/06/2024

12:05:52 PM

1,800.0000

36

CEUX

Genmab A/S

25/06/2024

12:05:52 PM

1,800.0000

5

CEUX

Genmab A/S

25/06/2024

12:05:52 PM

1,800.0000

16

CEUX

Genmab A/S

25/06/2024

12:05:52 PM

1,800.0000

9

AQEU

Genmab A/S

25/06/2024

12:05:52 PM

1,800.0000

2

AQEU

Genmab A/S

25/06/2024

12:10:49 PM

1,799.0000

83

CEUX

Genmab A/S

25/06/2024

12:10:49 PM

1,799.0000

12

AQEU

Genmab A/S

25/06/2024

12:10:49 PM

1,799.0000

13

TQEX

Genmab A/S

25/06/2024

12:10:49 PM

1,798.5000

18

XCSE

Genmab A/S

25/06/2024

12:10:49 PM

1,799.0000

93

XCSE

Genmab A/S

25/06/2024

12:10:49 PM

1,798.5000

18

CEUX

Genmab A/S

25/06/2024

12:10:49 PM

1,798.5000

18

CEUX

Genmab A/S

25/06/2024

12:10:49 PM

1,798.5000

14

CEUX

Genmab A/S

25/06/2024

12:10:49 PM

1,798.5000

2

AQEU

Genmab A/S

25/06/2024

12:10:49 PM

1,798.5000

42

AQEU

Genmab A/S

25/06/2024

12:10:49 PM

1,798.5000

5

TQEX

Genmab A/S

25/06/2024

12:10:49 PM

1,798.5000

5

TQEX

Genmab A/S

25/06/2024

12:10:49 PM

1,798.5000

16

XCSE

Genmab A/S

25/06/2024

12:10:49 PM

1,798.5000

2

XCSE

Genmab A/S

25/06/2024

12:10:49 PM

1,798.5000

16

XCSE

Genmab A/S

25/06/2024

12:10:49 PM

1,798.5000

3

XCSE

Genmab A/S

25/06/2024

12:10:49 PM

1,798.5000

36

CEUX

Genmab A/S

25/06/2024

12:17:05 PM

1,797.5000

9

XCSE

Genmab A/S

25/06/2024

12:17:05 PM

1,797.5000

47

XCSE

Genmab A/S

25/06/2024

12:17:05 PM

1,797.5000

1

AQEU

Genmab A/S

25/06/2024

12:17:05 PM

1,797.5000

5

TQEX

Genmab A/S

25/06/2024

12:17:05 PM

1,797.5000

9

CEUX

Genmab A/S

25/06/2024

12:17:05 PM

1,797.5000

9

CEUX

Genmab A/S

25/06/2024

12:17:05 PM

1,797.5000

9

CEUX

Genmab A/S

25/06/2024

12:17:05 PM

1,797.5000

9

CEUX

Genmab A/S

25/06/2024

12:17:05 PM

1,797.5000

8

CEUX

81

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

12:17:05 PM

1,797.5000

9

CEUX

Genmab A/S

25/06/2024

12:17:05 PM

1,797.5000

9

CEUX

Genmab A/S

25/06/2024

12:17:05 PM

1,797.5000

9

CEUX

Genmab A/S

25/06/2024

12:17:05 PM

1,797.5000

8

CEUX

Genmab A/S

25/06/2024

12:17:05 PM

1,797.5000

5

CEUX

Genmab A/S

25/06/2024

12:17:05 PM

1,797.5000

5

TQEX

Genmab A/S

25/06/2024

12:18:40 PM

1,797.5000

61

XCSE

Genmab A/S

25/06/2024

12:18:40 PM

1,797.5000

15

XCSE

Genmab A/S

25/06/2024

12:18:40 PM

1,797.5000

35

CEUX

Genmab A/S

25/06/2024

12:18:40 PM

1,797.5000

34

CEUX

Genmab A/S

25/06/2024

12:18:40 PM

1,797.5000

5

AQEU

Genmab A/S

25/06/2024

12:18:40 PM

1,797.5000

11

TQEX

Genmab A/S

25/06/2024

12:18:40 PM

1,797.5000

5

AQEU

Genmab A/S

25/06/2024

12:19:21 PM

1,797.0000

27

XCSE

Genmab A/S

25/06/2024

12:19:21 PM

1,797.0000

13

XCSE

Genmab A/S

25/06/2024

12:19:21 PM

1,797.0000

20

XCSE

Genmab A/S

25/06/2024

12:19:21 PM

1,797.0000

23

XCSE

Genmab A/S

25/06/2024

12:19:21 PM

1,797.0000

7

XCSE

Genmab A/S

25/06/2024

12:19:21 PM

1,797.0000

30

XCSE

Genmab A/S

25/06/2024

12:19:21 PM

1,797.0000

49

XCSE

Genmab A/S

25/06/2024

12:22:07 PM

1,796.5000

69

CEUX

Genmab A/S

25/06/2024

12:22:07 PM

1,796.5000

10

AQEU

Genmab A/S

25/06/2024

12:22:07 PM

1,796.5000

11

TQEX

Genmab A/S

25/06/2024

12:22:07 PM

1,796.5000

26

XCSE

Genmab A/S

25/06/2024

12:22:07 PM

1,796.5000

50

XCSE

Genmab A/S

25/06/2024

12:26:14 PM

1,796.0000

38

CEUX

Genmab A/S

25/06/2024

12:27:34 PM

1,796.5000

72

CEUX

Genmab A/S

25/06/2024

12:27:34 PM

1,796.5000

28

CEUX

Genmab A/S

25/06/2024

12:27:34 PM

1,796.5000

24

CEUX

Genmab A/S

25/06/2024

12:27:34 PM

1,796.5000

49

CEUX

Genmab A/S

25/06/2024

12:27:34 PM

1,796.5000

52

CEUX

Genmab A/S

25/06/2024

12:27:34 PM

1,796.5000

21

CEUX

Genmab A/S

25/06/2024

12:27:34 PM

1,796.5000

52

CEUX

Genmab A/S

25/06/2024

12:27:34 PM

1,796.5000

21

CEUX

Genmab A/S

25/06/2024

12:27:34 PM

1,796.5000

24

CEUX

Genmab A/S

25/06/2024

12:27:34 PM

1,796.5000

57

XCSE

Genmab A/S

25/06/2024

12:27:34 PM

1,796.5000

57

XCSE

Genmab A/S

25/06/2024

12:27:34 PM

1,796.5000

2

XCSE

Genmab A/S

25/06/2024

12:27:34 PM

1,796.5000

4

XCSE

Genmab A/S

25/06/2024

12:27:34 PM

1,796.0000

10

XCSE

Genmab A/S

25/06/2024

12:27:34 PM

1,796.0000

34

XCSE

Genmab A/S

25/06/2024

12:27:34 PM

1,796.5000

51

XCSE

Genmab A/S

25/06/2024

12:27:34 PM

1,796.5000

18

XCSE

Genmab A/S

25/06/2024

12:27:34 PM

1,796.5000

35

XCSE

Genmab A/S

25/06/2024

12:27:34 PM

1,796.5000

57

XCSE

Genmab A/S

25/06/2024

12:27:34 PM

1,796.5000

19

XCSE

Genmab A/S

25/06/2024

12:27:34 PM

1,796.0000

4

CEUX

Genmab A/S

25/06/2024

12:27:34 PM

1,796.0000

7

CEUX

82

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

12:27:34 PM

1,796.0000

5

CEUX

Genmab A/S

25/06/2024

12:27:34 PM

1,796.0000

7

CEUX

Genmab A/S

25/06/2024

12:27:34 PM

1,796.0000

4

CEUX

Genmab A/S

25/06/2024

12:27:34 PM

1,796.0000

5

TQEX

Genmab A/S

25/06/2024

12:27:34 PM

1,796.0000

11

CEUX

Genmab A/S

25/06/2024

12:27:34 PM

1,796.0000

6

CEUX

Genmab A/S

25/06/2024

12:27:34 PM

1,796.0000

36

CEUX

Genmab A/S

25/06/2024

12:27:34 PM

1,796.0000

5

TQEX

Genmab A/S

25/06/2024

12:27:34 PM

1,796.0000

4

XCSE

Genmab A/S

25/06/2024

12:27:34 PM

1,796.0000

38

XCSE

Genmab A/S

25/06/2024

12:27:34 PM

1,796.0000

2

XCSE

Genmab A/S

25/06/2024

12:36:05 PM

1,796.0000

36

CEUX

Genmab A/S

25/06/2024

12:36:05 PM

1,796.0000

2

CEUX

Genmab A/S

25/06/2024

12:36:51 PM

1,796.5000

14

CEUX

Genmab A/S

25/06/2024

12:36:51 PM

1,796.5000

9

CEUX

Genmab A/S

25/06/2024

12:36:51 PM

1,796.5000

2

TQEX

Genmab A/S

25/06/2024

12:36:51 PM

1,796.5000

2

TQEX

Genmab A/S

25/06/2024

12:36:51 PM

1,796.5000

4

CEUX

Genmab A/S

25/06/2024

12:36:51 PM

1,796.5000

4

CEUX

Genmab A/S

25/06/2024

12:36:51 PM

1,796.5000

9

CEUX

Genmab A/S

25/06/2024

12:36:51 PM

1,796.5000

2

TQEX

Genmab A/S

25/06/2024

12:36:51 PM

1,796.5000

2

TQEX

Genmab A/S

25/06/2024

12:36:51 PM

1,796.5000

9

TQEX

Genmab A/S

25/06/2024

12:37:09 PM

1,796.5000

12

CEUX

Genmab A/S

25/06/2024

12:37:09 PM

1,796.5000

9

CEUX

Genmab A/S

25/06/2024

12:37:09 PM

1,796.5000

4

CEUX

Genmab A/S

25/06/2024

12:37:09 PM

1,796.5000

5

CEUX

Genmab A/S

25/06/2024

12:37:09 PM

1,796.5000

6

TQEX

Genmab A/S

25/06/2024

12:37:33 PM

1,796.5000

36

CEUX

Genmab A/S

25/06/2024

12:37:33 PM

1,796.5000

3

CEUX

Genmab A/S

25/06/2024

12:38:13 PM

1,796.5000

8

CEUX

Genmab A/S

25/06/2024

12:38:13 PM

1,796.5000

9

CEUX

Genmab A/S

25/06/2024

12:38:13 PM

1,796.5000

9

TQEX

Genmab A/S

25/06/2024

12:38:13 PM

1,796.5000

12

XCSE

Genmab A/S

25/06/2024

12:38:28 PM

1,796.5000

5

CEUX

Genmab A/S

25/06/2024

12:38:28 PM

1,796.5000

9

CEUX

Genmab A/S

25/06/2024

12:38:28 PM

1,796.5000

9

CEUX

Genmab A/S

25/06/2024

12:38:28 PM

1,796.5000

2

TQEX

Genmab A/S

25/06/2024

12:38:28 PM

1,796.5000

2

TQEX

Genmab A/S

25/06/2024

12:38:28 PM

1,796.5000

9

XCSE

Genmab A/S

25/06/2024

12:39:11 PM

1,796.5000

7

XCSE

Genmab A/S

25/06/2024

12:39:26 PM

1,797.0000

9

CEUX

Genmab A/S

25/06/2024

12:39:26 PM

1,797.0000

9

CEUX

Genmab A/S

25/06/2024

12:40:38 PM

1,797.0000

44

XCSE

Genmab A/S

25/06/2024

12:40:38 PM

1,797.0000

44

XCSE

Genmab A/S

25/06/2024

12:40:38 PM

1,797.0000

17

XCSE

Genmab A/S

25/06/2024

12:40:39 PM

1,797.0000

17

CEUX

Genmab A/S

25/06/2024

12:40:39 PM

1,797.0000

20

AQEU

83

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

12:40:52 PM

1,797.0000

38

XCSE

Genmab A/S

25/06/2024

12:41:02 PM

1,796.5000

1

XCSE

Genmab A/S

25/06/2024

12:41:02 PM

1,796.5000

31

XCSE

Genmab A/S

25/06/2024

12:41:02 PM

1,796.5000

72

XCSE

Genmab A/S

25/06/2024

12:41:02 PM

1,796.5000

65

CEUX

Genmab A/S

25/06/2024

12:41:02 PM

1,796.5000

10

TQEX

Genmab A/S

25/06/2024

12:43:06 PM

1,797.0000

49

CEUX

Genmab A/S

25/06/2024

12:43:06 PM

1,797.0000

23

CEUX

Genmab A/S

25/06/2024

12:43:06 PM

1,797.0000

10

AQEU

Genmab A/S

25/06/2024

12:43:06 PM

1,797.0000

80

XCSE

Genmab A/S

25/06/2024

12:44:36 PM

1,798.5000

13

XCSE

Genmab A/S

25/06/2024

12:44:36 PM

1,798.5000

12

CEUX

Genmab A/S

25/06/2024

12:44:36 PM

1,798.5000

12

CEUX

Genmab A/S

25/06/2024

12:44:36 PM

1,798.5000

12

CEUX

Genmab A/S

25/06/2024

12:44:36 PM

1,798.5000

2

AQEU

Genmab A/S

25/06/2024

12:44:36 PM

1,798.5000

2

AQEU

Genmab A/S

25/06/2024

12:44:36 PM

1,798.5000

13

XCSE

Genmab A/S

25/06/2024

12:44:36 PM

1,798.5000

5

XCSE

Genmab A/S

25/06/2024

12:44:36 PM

1,798.5000

13

XCSE

Genmab A/S

25/06/2024

12:44:36 PM

1,798.5000

13

XCSE

Genmab A/S

25/06/2024

12:44:36 PM

1,798.5000

13

XCSE

Genmab A/S

25/06/2024

12:46:48 PM

1,799.0000

34

CEUX

Genmab A/S

25/06/2024

12:47:13 PM

1,799.0000

39

CEUX

Genmab A/S

25/06/2024

12:47:38 PM

1,799.0000

35

CEUX

Genmab A/S

25/06/2024

12:48:00 PM

1,799.0000

35

CEUX

Genmab A/S

25/06/2024

12:48:58 PM

1,798.5000

5

CEUX

Genmab A/S

25/06/2024

12:48:58 PM

1,799.0000

34

CEUX

Genmab A/S

25/06/2024

12:52:30 PM

1,799.5000

2

AQEU

Genmab A/S

25/06/2024

12:52:30 PM

1,799.5000

2

AQEU

Genmab A/S

25/06/2024

12:52:30 PM

1,799.5000

4

CEUX

Genmab A/S

25/06/2024

12:52:30 PM

1,799.5000

4

CEUX

Genmab A/S

25/06/2024

12:52:30 PM

1,799.5000

2

AQEU

Genmab A/S

25/06/2024

12:52:30 PM

1,799.5000

2

AQEU

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

39

CEUX

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

1

CEUX

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

40

CEUX

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

32

CEUX

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

8

CEUX

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

2

CEUX

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

6

AQEU

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

6

AQEU

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

6

TQEX

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

6

TQEX

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

4

TQEX

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

6

TQEX

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

4

TQEX

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

6

TQEX

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

44

XCSE

84

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

73

XCSE

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

3

XCSE

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

14

XCSE

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

25

XCSE

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

2

XCSE

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

49

XCSE

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

24

XCSE

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

44

XCSE

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

46

XCSE

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

12

XCSE

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

7

XCSE

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

6

TQEX

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

4

TQEX

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

22

CEUX

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

18

CEUX

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

6

CEUX

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

6

AQEU

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

6

AQEU

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

6

AQEU

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

6

AQEU

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

6

AQEU

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

2

AQEU

Genmab A/S

25/06/2024

12:53:19 PM

1,799.0000

4

TQEX

Genmab A/S

25/06/2024

12:53:31 PM

1,798.5000

55

XCSE

Genmab A/S

25/06/2024

12:53:31 PM

1,798.5000

16

XCSE

Genmab A/S

25/06/2024

12:53:31 PM

1,798.5000

49

CEUX

Genmab A/S

25/06/2024

12:53:31 PM

1,798.5000

9

CEUX

Genmab A/S

25/06/2024

12:53:31 PM

1,798.5000

7

AQEU

Genmab A/S

25/06/2024

12:53:31 PM

1,798.5000

8

TQEX

Genmab A/S

25/06/2024

12:53:31 PM

1,798.5000

55

XCSE

Genmab A/S

25/06/2024

12:53:31 PM

1,798.5000

49

CEUX

Genmab A/S

25/06/2024

12:53:31 PM

1,798.5000

8

TQEX

Genmab A/S

25/06/2024

12:53:31 PM

1,798.5000

2

CEUX

Genmab A/S

25/06/2024

12:53:31 PM

1,798.5000

9

CEUX

Genmab A/S

25/06/2024

12:53:31 PM

1,798.5000

7

CEUX

Genmab A/S

25/06/2024

12:53:31 PM

1,798.5000

3

AQEU

Genmab A/S

25/06/2024

12:53:31 PM

1,798.5000

4

AQEU

Genmab A/S

25/06/2024

12:53:31 PM

1,798.5000

7

AQEU

Genmab A/S

25/06/2024

12:53:31 PM

1,798.5000

6

TQEX

Genmab A/S

25/06/2024

12:53:31 PM

1,798.5000

2

TQEX

Genmab A/S

25/06/2024

12:53:31 PM

1,798.5000

2

TQEX

Genmab A/S

25/06/2024

12:53:31 PM

1,798.5000

36

CEUX

Genmab A/S

25/06/2024

12:53:31 PM

1,798.5000

8

AQEU

Genmab A/S

25/06/2024

12:53:31 PM

1,798.5000

9

TQEX

Genmab A/S

25/06/2024

1:02:32 PM

1,800.5000

82

XCSE

Genmab A/S

25/06/2024

1:02:32 PM

1,800.5000

45

XCSE

Genmab A/S

25/06/2024

1:02:32 PM

1,800.5000

7

XCSE

Genmab A/S

25/06/2024

1:02:32 PM

1,800.5000

75

XCSE

85

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

1:02:32 PM

1,800.5000

45

XCSE

Genmab A/S

25/06/2024

1:02:32 PM

1,800.5000

6

XCSE

Genmab A/S

25/06/2024

1:02:32 PM

1,800.5000

1

XCSE

Genmab A/S

25/06/2024

1:02:32 PM

1,800.5000

45

XCSE

Genmab A/S

25/06/2024

1:02:32 PM

1,800.5000

75

XCSE

Genmab A/S

25/06/2024

1:02:32 PM

1,800.5000

45

XCSE

Genmab A/S

25/06/2024

1:02:32 PM

1,800.5000

75

XCSE

Genmab A/S

25/06/2024

1:02:32 PM

1,800.5000

40

XCSE

Genmab A/S

25/06/2024

1:02:32 PM

1,800.5000

40

CEUX

Genmab A/S

25/06/2024

1:02:32 PM

1,800.5000

40

CEUX

Genmab A/S

25/06/2024

1:02:32 PM

1,800.5000

36

CEUX

Genmab A/S

25/06/2024

1:02:32 PM

1,800.5000

40

CEUX

Genmab A/S

25/06/2024

1:02:32 PM

1,800.5000

36

CEUX

Genmab A/S

25/06/2024

1:02:32 PM

1,800.5000

40

CEUX

Genmab A/S

25/06/2024

1:02:32 PM

1,800.5000

36

CEUX

Genmab A/S

25/06/2024

1:02:32 PM

1,800.5000

40

CEUX

Genmab A/S

25/06/2024

1:02:32 PM

1,800.5000

36

CEUX

Genmab A/S

25/06/2024

1:02:32 PM

1,800.5000

21

CEUX

Genmab A/S

25/06/2024

1:02:32 PM

1,800.5000

6

AQEU

Genmab A/S

25/06/2024

1:02:32 PM

1,800.5000

6

AQEU

Genmab A/S

25/06/2024

1:02:32 PM

1,800.5000

6

AQEU

Genmab A/S

25/06/2024

1:02:32 PM

1,800.5000

6

AQEU

Genmab A/S

25/06/2024

1:02:32 PM

1,800.5000

6

AQEU

Genmab A/S

25/06/2024

1:02:32 PM

1,800.5000

6

AQEU

Genmab A/S

25/06/2024

1:02:32 PM

1,800.5000

6

AQEU

Genmab A/S

25/06/2024

1:02:32 PM

1,800.5000

6

AQEU

Genmab A/S

25/06/2024

1:02:32 PM

1,800.5000

3

AQEU

Genmab A/S

25/06/2024

1:02:32 PM

1,800.5000

37

XCSE

Genmab A/S

25/06/2024

1:12:39 PM

1,799.0000

1

CEUX

Genmab A/S

25/06/2024

1:14:38 PM

1,799.0000

22

XCSE

Genmab A/S

25/06/2024

1:14:38 PM

1,799.0000

49

XCSE

Genmab A/S

25/06/2024

1:14:38 PM

1,799.0000

21

CEUX

Genmab A/S

25/06/2024

1:16:37 PM

1,800.0000

35

CEUX

Genmab A/S

25/06/2024

1:16:37 PM

1,800.0000

10

CEUX

Genmab A/S

25/06/2024

1:16:37 PM

1,800.0000

11

CEUX

Genmab A/S

25/06/2024

1:16:37 PM

1,800.0000

22

CEUX

Genmab A/S

25/06/2024

1:16:37 PM

1,800.0000

19

CEUX

Genmab A/S

25/06/2024

1:19:45 PM

1,800.5000

26

XCSE

Genmab A/S

25/06/2024

1:19:45 PM

1,800.5000

75

XCSE

Genmab A/S

25/06/2024

1:19:45 PM

1,800.5000

5

XCSE

Genmab A/S

25/06/2024

1:19:45 PM

1,800.5000

74

XCSE

Genmab A/S

25/06/2024

1:19:45 PM

1,800.5000

26

XCSE

Genmab A/S

25/06/2024

1:19:45 PM

1,800.5000

177

XCSE

Genmab A/S

25/06/2024

1:19:45 PM

1,800.5000

61

XCSE

Genmab A/S

25/06/2024

1:19:45 PM

1,800.5000

70

XCSE

Genmab A/S

25/06/2024

1:19:45 PM

1,800.5000

30

XCSE

Genmab A/S

25/06/2024

1:19:45 PM

1,800.5000

80

XCSE

Genmab A/S

25/06/2024

1:19:45 PM

1,800.5000

74

XCSE

86

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

1:19:45 PM

1,800.5000

49

XCSE

Genmab A/S

25/06/2024

1:19:45 PM

1,800.5000

72

XCSE

Genmab A/S

25/06/2024

1:19:45 PM

1,800.5000

4

XCSE

Genmab A/S

25/06/2024

1:19:45 PM

1,800.5000

46

XCSE

Genmab A/S

25/06/2024

1:19:45 PM

1,800.5000

74

XCSE

Genmab A/S

25/06/2024

1:19:45 PM

1,800.5000

83

XCSE

Genmab A/S

25/06/2024

1:19:45 PM

1,800.5000

30

XCSE

Genmab A/S

25/06/2024

1:19:45 PM

1,800.5000

16

XCSE

Genmab A/S

25/06/2024

1:24:14 PM

1,799.0000

28

CEUX

Genmab A/S

25/06/2024

1:24:14 PM

1,799.0000

28

CEUX

Genmab A/S

25/06/2024

1:24:14 PM

1,799.0000

6

CEUX

Genmab A/S

25/06/2024

1:24:14 PM

1,799.0000

5

TQEX

Genmab A/S

25/06/2024

1:24:14 PM

1,799.0000

15

TQEX

Genmab A/S

25/06/2024

1:24:14 PM

1,799.0000

30

XCSE

Genmab A/S

25/06/2024

1:24:14 PM

1,799.0000

39

XCSE

Genmab A/S

25/06/2024

1:24:14 PM

1,799.0000

20

CEUX

Genmab A/S

25/06/2024

1:24:14 PM

1,799.0000

6

CEUX

Genmab A/S

25/06/2024

1:25:45 PM

1,798.5000

18

CEUX

Genmab A/S

25/06/2024

1:25:45 PM

1,798.5000

19

XCSE

Genmab A/S

25/06/2024

1:30:31 PM

1,799.5000

10

CEUX

Genmab A/S

25/06/2024

1:30:31 PM

1,799.5000

1

CEUX

Genmab A/S

25/06/2024

1:31:16 PM

1,799.5000

29

XCSE

Genmab A/S

25/06/2024

1:31:16 PM

1,799.5000

66

XCSE

Genmab A/S

25/06/2024

1:31:16 PM

1,799.5000

35

CEUX

Genmab A/S

25/06/2024

1:31:16 PM

1,799.5000

3

CEUX

Genmab A/S

25/06/2024

1:31:16 PM

1,799.5000

24

CEUX

Genmab A/S

25/06/2024

1:31:16 PM

1,799.5000

27

CEUX

Genmab A/S

25/06/2024

1:31:16 PM

1,799.5000

27

CEUX

Genmab A/S

25/06/2024

1:31:16 PM

1,799.5000

20

CEUX

Genmab A/S

25/06/2024

1:31:16 PM

1,799.5000

23

CEUX

Genmab A/S

25/06/2024

1:31:16 PM

1,799.5000

4

AQEU

Genmab A/S

25/06/2024

1:31:16 PM

1,799.5000

5

TQEX

Genmab A/S

25/06/2024

1:31:16 PM

1,799.5000

5

TQEX

Genmab A/S

25/06/2024

1:31:16 PM

1,799.5000

15

TQEX

Genmab A/S

25/06/2024

1:31:16 PM

1,799.5000

2

TQEX

Genmab A/S

25/06/2024

1:31:16 PM

1,799.5000

3

TQEX

Genmab A/S

25/06/2024

1:31:16 PM

1,799.5000

16

TQEX

Genmab A/S

25/06/2024

1:31:16 PM

1,799.5000

4

CEUX

Genmab A/S

25/06/2024

1:31:16 PM

1,799.5000

27

CEUX

Genmab A/S

25/06/2024

1:31:16 PM

1,799.5000

17

CEUX

Genmab A/S

25/06/2024

1:31:16 PM

1,799.5000

3

TQEX

Genmab A/S

25/06/2024

1:31:16 PM

1,799.5000

2

TQEX

Genmab A/S

25/06/2024

1:31:16 PM

1,799.5000

29

XCSE

Genmab A/S

25/06/2024

1:31:16 PM

1,799.5000

27

XCSE

Genmab A/S

25/06/2024

1:31:16 PM

1,799.5000

25

XCSE

Genmab A/S

25/06/2024

1:31:16 PM

1,799.5000

4

XCSE

Genmab A/S

25/06/2024

1:31:16 PM

1,799.5000

45

XCSE

Genmab A/S

25/06/2024

1:31:16 PM

1,799.5000

1

XCSE

87

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

1:31:16 PM

1,799.5000

30

XCSE

Genmab A/S

25/06/2024

1:31:16 PM

1,799.5000

4

CEUX

Genmab A/S

25/06/2024

1:31:16 PM

1,799.5000

4

CEUX

Genmab A/S

25/06/2024

1:31:16 PM

1,799.5000

2

AQEU

Genmab A/S

25/06/2024

1:31:16 PM

1,799.5000

2

AQEU

Genmab A/S

25/06/2024

1:31:16 PM

1,799.5000

2

TQEX

Genmab A/S

25/06/2024

1:31:16 PM

1,799.5000

2

TQEX

Genmab A/S

25/06/2024

1:36:56 PM

1,799.0000

36

CEUX

Genmab A/S

25/06/2024

1:37:18 PM

1,799.0000

5

CEUX

Genmab A/S

25/06/2024

1:37:18 PM

1,799.0000

2

AQEU

Genmab A/S

25/06/2024

1:37:18 PM

1,799.0000

2

AQEU

Genmab A/S

25/06/2024

1:37:18 PM

1,799.0000

2

TQEX

Genmab A/S

25/06/2024

1:37:18 PM

1,799.0000

2

TQEX

Genmab A/S

25/06/2024

1:37:18 PM

1,799.0000

21

XCSE

Genmab A/S

25/06/2024

1:40:15 PM

1,799.0000

99

CEUX

Genmab A/S

25/06/2024

1:40:15 PM

1,799.0000

37

CEUX

Genmab A/S

25/06/2024

1:40:15 PM

1,799.0000

37

CEUX

Genmab A/S

25/06/2024

1:40:15 PM

1,799.0000

13

CEUX

Genmab A/S

25/06/2024

1:40:15 PM

1,799.0000

37

CEUX

Genmab A/S

25/06/2024

1:40:15 PM

1,799.0000

14

AQEU

Genmab A/S

25/06/2024

1:40:15 PM

1,799.0000

6

AQEU

Genmab A/S

25/06/2024

1:40:15 PM

1,799.0000

6

AQEU

Genmab A/S

25/06/2024

1:40:15 PM

1,799.0000

38

TQEX

Genmab A/S

25/06/2024

1:40:15 PM

1,799.0000

29

TQEX

Genmab A/S

25/06/2024

1:40:15 PM

1,799.0000

1

TQEX

Genmab A/S

25/06/2024

1:40:15 PM

1,799.0000

16

TQEX

Genmab A/S

25/06/2024

1:40:15 PM

1,799.0000

70

XCSE

Genmab A/S

25/06/2024

1:40:15 PM

1,799.0000

41

XCSE

Genmab A/S

25/06/2024

1:40:15 PM

1,799.0000

9

XCSE

Genmab A/S

25/06/2024

1:40:15 PM

1,799.0000

33

XCSE

Genmab A/S

25/06/2024

1:40:15 PM

1,799.0000

50

XCSE

Genmab A/S

25/06/2024

1:40:15 PM

1,799.0000

6

AQEU

Genmab A/S

25/06/2024

1:40:15 PM

1,799.0000

42

XCSE

Genmab A/S

25/06/2024

1:40:15 PM

1,799.0000

42

XCSE

Genmab A/S

25/06/2024

1:44:43 PM

1,799.0000

2

TQEX

Genmab A/S

25/06/2024

1:44:43 PM

1,799.0000

2

TQEX

Genmab A/S

25/06/2024

1:44:43 PM

1,799.0000

9

TQEX

Genmab A/S

25/06/2024

1:44:43 PM

1,799.0000

16

TQEX

Genmab A/S

25/06/2024

1:45:01 PM

1,799.0000

2

TQEX

Genmab A/S

25/06/2024

1:45:01 PM

1,799.0000

3

TQEX

Genmab A/S

25/06/2024

1:45:01 PM

1,799.0000

2

TQEX

Genmab A/S

25/06/2024

1:45:08 PM

1,798.0000

25

XCSE

Genmab A/S

25/06/2024

1:45:08 PM

1,798.0000

8

XCSE

Genmab A/S

25/06/2024

1:45:30 PM

1,798.5000

5

CEUX

Genmab A/S

25/06/2024

1:45:30 PM

1,799.0000

4

CEUX

Genmab A/S

25/06/2024

1:45:30 PM

1,799.0000

4

CEUX

Genmab A/S

25/06/2024

1:45:30 PM

1,799.0000

11

CEUX

Genmab A/S

25/06/2024

1:45:44 PM

1,799.0000

5

CEUX

88

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

1:45:44 PM

1,799.0000

4

CEUX

Genmab A/S

25/06/2024

1:45:59 PM

1,798.5000

5

CEUX

Genmab A/S

25/06/2024

1:45:59 PM

1,798.5000

2

AQEU

Genmab A/S

25/06/2024

1:45:59 PM

1,798.5000

20

AQEU

Genmab A/S

25/06/2024

1:45:59 PM

1,798.5000

1

AQEU

Genmab A/S

25/06/2024

1:45:59 PM

1,798.5000

2

TQEX

Genmab A/S

25/06/2024

1:45:59 PM

1,798.5000

2

TQEX

Genmab A/S

25/06/2024

1:47:47 PM

1,798.5000

49

XCSE

Genmab A/S

25/06/2024

1:48:22 PM

1,798.5000

15

XCSE

Genmab A/S

25/06/2024

1:48:22 PM

1,798.5000

27

XCSE

Genmab A/S

25/06/2024

1:48:22 PM

1,798.5000

27

XCSE

Genmab A/S

25/06/2024

1:48:22 PM

1,798.5000

15

XCSE

Genmab A/S

25/06/2024

1:48:22 PM

1,798.5000

42

XCSE

Genmab A/S

25/06/2024

1:48:22 PM

1,798.5000

10

XCSE

Genmab A/S

25/06/2024

1:48:29 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:48:29 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:48:29 PM

1,798.0000

6

AQEU

Genmab A/S

25/06/2024

1:48:29 PM

1,798.5000

1

CEUX

Genmab A/S

25/06/2024

1:48:29 PM

1,798.5000

5

CEUX

Genmab A/S

25/06/2024

1:48:29 PM

1,798.5000

2

TQEX

Genmab A/S

25/06/2024

1:48:29 PM

1,798.5000

30

XCSE

Genmab A/S

25/06/2024

1:48:29 PM

1,798.5000

2

CEUX

Genmab A/S

25/06/2024

1:48:36 PM

1,798.0000

24

CEUX

Genmab A/S

25/06/2024

1:49:11 PM

1,798.5000

1

TQEX

Genmab A/S

25/06/2024

1:49:11 PM

1,798.5000

38

TQEX

Genmab A/S

25/06/2024

1:49:34 PM

1,798.5000

34

TQEX

Genmab A/S

25/06/2024

1:49:34 PM

1,798.5000

4

XCSE

Genmab A/S

25/06/2024

1:49:46 PM

1,798.0000

25

XCSE

Genmab A/S

25/06/2024

1:49:46 PM

1,798.0000

24

CEUX

Genmab A/S

25/06/2024

1:49:46 PM

1,798.0000

9

CEUX

Genmab A/S

25/06/2024

1:49:46 PM

1,798.0000

5

TQEX

Genmab A/S

25/06/2024

1:49:46 PM

1,798.0000

5

TQEX

Genmab A/S

25/06/2024

1:50:11 PM

1,797.5000

61

XCSE

Genmab A/S

25/06/2024

1:50:11 PM

1,797.5000

39

XCSE

Genmab A/S

25/06/2024

1:51:59 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:52:18 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:52:18 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:52:30 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:52:30 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:52:30 PM

1,798.0000

9

AQEU

Genmab A/S

25/06/2024

1:52:38 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:52:51 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:52:51 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:53:00 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:53:00 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:53:11 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:53:11 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:53:11 PM

1,798.0000

50

AQEU

89

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

1:53:20 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:53:20 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:53:31 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:53:31 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:53:42 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:53:42 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:53:53 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:53:53 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:54:05 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:54:05 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:54:14 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:54:14 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:54:29 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:54:29 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:54:43 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:54:43 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:54:54 PM

1,797.0000

10

CEUX

Genmab A/S

25/06/2024

1:54:55 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:54:55 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:55:03 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:55:03 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:55:15 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:55:15 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:55:23 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:55:23 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:55:36 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:55:36 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:55:47 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:55:47 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:55:59 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:55:59 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:56:00 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:56:00 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:56:00 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:56:00 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:56:15 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:56:15 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:56:28 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:56:28 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:56:28 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:56:28 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:56:28 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:56:29 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:56:29 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:56:29 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:56:29 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:56:29 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:56:29 PM

1,798.0000

2

AQEU

90

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

1:56:40 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:56:40 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:56:41 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:56:41 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:56:42 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:56:42 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:56:42 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:56:42 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:56:42 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:56:53 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:56:53 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:56:54 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:56:54 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:56:54 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:56:57 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:56:57 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:56:57 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:56:57 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:56:58 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:56:58 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

1:57:05 PM

1,797.5000

5

AQEU

Genmab A/S

25/06/2024

1:59:39 PM

1,798.5000

23

XCSE

Genmab A/S

25/06/2024

1:59:39 PM

1,798.5000

30

XCSE

Genmab A/S

25/06/2024

1:59:39 PM

1,798.5000

30

XCSE

Genmab A/S

25/06/2024

1:59:39 PM

1,798.5000

30

XCSE

Genmab A/S

25/06/2024

1:59:39 PM

1,798.5000

29

XCSE

Genmab A/S

25/06/2024

1:59:40 PM

1,798.0000

34

CEUX

Genmab A/S

25/06/2024

1:59:40 PM

1,798.0000

6

CEUX

Genmab A/S

25/06/2024

1:59:40 PM

1,798.0000

36

XCSE

Genmab A/S

25/06/2024

1:59:40 PM

1,798.0000

6

XCSE

Genmab A/S

25/06/2024

1:59:40 PM

1,798.0000

6

XCSE

Genmab A/S

25/06/2024

1:59:40 PM

1,798.0000

30

XCSE

Genmab A/S

25/06/2024

1:59:40 PM

1,798.0000

36

XCSE

Genmab A/S

25/06/2024

1:59:40 PM

1,798.0000

17

XCSE

Genmab A/S

25/06/2024

1:59:40 PM

1,798.0000

34

CEUX

Genmab A/S

25/06/2024

1:59:40 PM

1,798.0000

34

CEUX

Genmab A/S

25/06/2024

1:59:40 PM

1,798.0000

5

CEUX

Genmab A/S

25/06/2024

1:59:40 PM

1,798.0000

34

CEUX

Genmab A/S

25/06/2024

1:59:40 PM

1,798.0000

34

CEUX

Genmab A/S

25/06/2024

1:59:40 PM

1,798.0000

34

CEUX

Genmab A/S

25/06/2024

1:59:40 PM

1,798.0000

34

CEUX

Genmab A/S

25/06/2024

1:59:40 PM

1,798.0000

9

CEUX

Genmab A/S

25/06/2024

1:59:40 PM

1,798.0000

19

XCSE

Genmab A/S

25/06/2024

1:59:40 PM

1,798.0000

21

XCSE

Genmab A/S

25/06/2024

2:01:38 PM

1,798.5000

24

XCSE

Genmab A/S

25/06/2024

2:01:49 PM

1,798.5000

8

XCSE

Genmab A/S

25/06/2024

2:05:58 PM

1,799.0000

7

XCSE

Genmab A/S

25/06/2024

2:05:58 PM

1,799.0000

17

XCSE

91

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

2:05:58 PM

1,799.0000

30

XCSE

Genmab A/S

25/06/2024

2:05:58 PM

1,798.5000

20

CEUX

Genmab A/S

25/06/2024

2:05:58 PM

1,798.5000

99

CEUX

Genmab A/S

25/06/2024

2:05:58 PM

1,798.5000

3

AQEU

Genmab A/S

25/06/2024

2:05:58 PM

1,798.5000

14

AQEU

Genmab A/S

25/06/2024

2:05:58 PM

1,798.5000

1

AQEU

Genmab A/S

25/06/2024

2:05:58 PM

1,798.5000

3

AQEU

Genmab A/S

25/06/2024

2:05:58 PM

1,798.5000

14

AQEU

Genmab A/S

25/06/2024

2:05:58 PM

1,798.5000

3

AQEU

Genmab A/S

25/06/2024

2:05:58 PM

1,798.5000

2

AQEU

Genmab A/S

25/06/2024

2:05:58 PM

1,798.5000

12

XCSE

Genmab A/S

25/06/2024

2:05:58 PM

1,798.5000

9

XCSE

Genmab A/S

25/06/2024

2:05:58 PM

1,798.5000

31

XCSE

Genmab A/S

25/06/2024

2:05:58 PM

1,798.5000

50

XCSE

Genmab A/S

25/06/2024

2:05:58 PM

1,798.5000

29

XCSE

Genmab A/S

25/06/2024

2:05:58 PM

1,798.5000

21

XCSE

Genmab A/S

25/06/2024

2:05:58 PM

1,798.5000

19

XCSE

Genmab A/S

25/06/2024

2:05:58 PM

1,798.5000

21

XCSE

Genmab A/S

25/06/2024

2:05:58 PM

1,798.5000

89

XCSE

Genmab A/S

25/06/2024

2:05:58 PM

1,798.5000

21

XCSE

Genmab A/S

25/06/2024

2:05:58 PM

1,798.5000

24

XCSE

Genmab A/S

25/06/2024

2:05:58 PM

1,798.5000

37

XCSE

Genmab A/S

25/06/2024

2:05:58 PM

1,798.5000

20

CEUX

Genmab A/S

25/06/2024

2:05:58 PM

1,798.5000

59

CEUX

Genmab A/S

25/06/2024

2:05:58 PM

1,798.5000

40

CEUX

Genmab A/S

25/06/2024

2:05:58 PM

1,798.5000

12

AQEU

Genmab A/S

25/06/2024

2:05:58 PM

1,798.5000

3

AQEU

Genmab A/S

25/06/2024

2:05:58 PM

1,798.5000

3

AQEU

Genmab A/S

25/06/2024

2:05:58 PM

1,798.5000

20

CEUX

Genmab A/S

25/06/2024

2:05:58 PM

1,798.5000

61

CEUX

Genmab A/S

25/06/2024

2:06:28 PM

1,799.0000

67

CEUX

Genmab A/S

25/06/2024

2:06:28 PM

1,799.0000

11

TQEX

Genmab A/S

25/06/2024

2:06:28 PM

1,799.0000

75

XCSE

Genmab A/S

25/06/2024

2:06:42 PM

1,798.5000

9

CEUX

Genmab A/S

25/06/2024

2:06:42 PM

1,798.5000

8

CEUX

Genmab A/S

25/06/2024

2:06:42 PM

1,798.5000

1

AQEU

Genmab A/S

25/06/2024

2:06:42 PM

1,798.5000

9

XCSE

Genmab A/S

25/06/2024

2:06:42 PM

1,798.5000

6

XCSE

Genmab A/S

25/06/2024

2:06:42 PM

1,798.5000

5

TQEX

Genmab A/S

25/06/2024

2:06:42 PM

1,798.5000

3

TQEX

Genmab A/S

25/06/2024

2:08:15 PM

1,798.5000

9

XCSE

Genmab A/S

25/06/2024

2:08:15 PM

1,798.5000

9

XCSE

Genmab A/S

25/06/2024

2:08:41 PM

1,798.0000

14

XCSE

Genmab A/S

25/06/2024

2:08:41 PM

1,798.0000

26

XCSE

Genmab A/S

25/06/2024

2:08:41 PM

1,798.0000

101

XCSE

Genmab A/S

25/06/2024

2:08:41 PM

1,798.0000

15

CEUX

Genmab A/S

25/06/2024

2:08:41 PM

1,798.0000

15

CEUX

Genmab A/S

25/06/2024

2:08:41 PM

1,798.0000

15

CEUX

92

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

2:08:41 PM

1,798.0000

15

CEUX

Genmab A/S

25/06/2024

2:08:41 PM

1,798.0000

10

CEUX

Genmab A/S

25/06/2024

2:08:41 PM

1,798.0000

15

CEUX

Genmab A/S

25/06/2024

2:08:41 PM

1,798.0000

15

CEUX

Genmab A/S

25/06/2024

2:08:41 PM

1,798.0000

14

CEUX

Genmab A/S

25/06/2024

2:08:41 PM

1,798.0000

5

TQEX

Genmab A/S

25/06/2024

2:08:41 PM

1,798.0000

15

CEUX

Genmab A/S

25/06/2024

2:08:41 PM

1,798.0000

15

CEUX

Genmab A/S

25/06/2024

2:08:41 PM

1,798.0000

5

CEUX

Genmab A/S

25/06/2024

2:08:41 PM

1,798.0000

5

TQEX

Genmab A/S

25/06/2024

2:08:41 PM

1,798.0000

5

TQEX

Genmab A/S

25/06/2024

2:08:41 PM

1,798.0000

36

XCSE

Genmab A/S

25/06/2024

2:08:41 PM

1,798.0000

4

CEUX

Genmab A/S

25/06/2024

2:08:41 PM

1,798.0000

4

CEUX

Genmab A/S

25/06/2024

2:08:41 PM

1,798.0000

2

TQEX

Genmab A/S

25/06/2024

2:08:41 PM

1,798.0000

2

TQEX

Genmab A/S

25/06/2024

2:08:41 PM

1,798.0000

19

XCSE

Genmab A/S

25/06/2024

2:08:41 PM

1,798.0000

17

XCSE

Genmab A/S

25/06/2024

2:08:41 PM

1,798.0000

24

XCSE

Genmab A/S

25/06/2024

2:08:41 PM

1,798.0000

7

XCSE

Genmab A/S

25/06/2024

2:08:41 PM

1,798.0000

26

XCSE

Genmab A/S

25/06/2024

2:08:41 PM

1,798.0000

26

XCSE

Genmab A/S

25/06/2024

2:08:41 PM

1,798.0000

36

CEUX

Genmab A/S

25/06/2024

2:08:41 PM

1,798.0000

5

CEUX

Genmab A/S

25/06/2024

2:08:41 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

2:08:41 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

2:08:41 PM

1,798.0000

9

AQEU

Genmab A/S

25/06/2024

2:08:41 PM

1,798.0000

2

TQEX

Genmab A/S

25/06/2024

2:13:19 PM

1,797.5000

11

XCSE

Genmab A/S

25/06/2024

2:13:19 PM

1,797.5000

13

CEUX

Genmab A/S

25/06/2024

2:13:19 PM

1,797.5000

5

TQEX

Genmab A/S

25/06/2024

2:16:08 PM

1,797.5000

22

XCSE

Genmab A/S

25/06/2024

2:16:41 PM

1,797.5000

19

XCSE

Genmab A/S

25/06/2024

2:16:41 PM

1,797.5000

1

XCSE

Genmab A/S

25/06/2024

2:16:41 PM

1,797.5000

37

CEUX

Genmab A/S

25/06/2024

2:16:41 PM

1,797.5000

95

CEUX

Genmab A/S

25/06/2024

2:16:44 PM

1,797.5000

37

CEUX

Genmab A/S

25/06/2024

2:16:44 PM

1,797.5000

105

XCSE

Genmab A/S

25/06/2024

2:16:44 PM

1,797.5000

41

XCSE

Genmab A/S

25/06/2024

2:16:44 PM

1,797.5000

19

XCSE

Genmab A/S

25/06/2024

2:16:44 PM

1,797.5000

18

XCSE

Genmab A/S

25/06/2024

2:16:59 PM

1,797.0000

19

XCSE

Genmab A/S

25/06/2024

2:16:59 PM

1,797.0000

46

XCSE

Genmab A/S

25/06/2024

2:16:59 PM

1,797.5000

28

XCSE

Genmab A/S

25/06/2024

2:16:59 PM

1,797.5000

89

XCSE

Genmab A/S

25/06/2024

2:16:59 PM

1,797.5000

37

XCSE

Genmab A/S

25/06/2024

2:16:59 PM

1,797.0000

18

CEUX

Genmab A/S

25/06/2024

2:16:59 PM

1,797.0000

18

CEUX

93

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

2:16:59 PM

1,797.0000

18

CEUX

Genmab A/S

25/06/2024

2:16:59 PM

1,797.0000

6

CEUX

Genmab A/S

25/06/2024

2:16:59 PM

1,797.0000

2

AQEU

Genmab A/S

25/06/2024

2:16:59 PM

1,797.0000

42

AQEU

Genmab A/S

25/06/2024

2:16:59 PM

1,797.0000

9

TQEX

Genmab A/S

25/06/2024

2:16:59 PM

1,797.0000

5

TQEX

Genmab A/S

25/06/2024

2:16:59 PM

1,797.0000

13

TQEX

Genmab A/S

25/06/2024

2:16:59 PM

1,797.0000

5

TQEX

Genmab A/S

25/06/2024

2:16:59 PM

1,797.0000

9

TQEX

Genmab A/S

25/06/2024

2:16:59 PM

1,797.0000

5

TQEX

Genmab A/S

25/06/2024

2:25:29 PM

1,797.5000

40

XCSE

Genmab A/S

25/06/2024

2:25:29 PM

1,797.5000

40

XCSE

Genmab A/S

25/06/2024

2:25:29 PM

1,797.5000

40

XCSE

Genmab A/S

25/06/2024

2:25:29 PM

1,797.5000

30

XCSE

Genmab A/S

25/06/2024

2:25:29 PM

1,797.5000

40

XCSE

Genmab A/S

25/06/2024

2:25:29 PM

1,797.5000

7

XCSE

Genmab A/S

25/06/2024

2:25:29 PM

1,797.5000

33

XCSE

Genmab A/S

25/06/2024

2:25:29 PM

1,797.5000

37

CEUX

Genmab A/S

25/06/2024

2:25:29 PM

1,797.5000

37

CEUX

Genmab A/S

25/06/2024

2:25:29 PM

1,797.5000

3

CEUX

Genmab A/S

25/06/2024

2:25:29 PM

1,797.5000

13

CEUX

Genmab A/S

25/06/2024

2:26:09 PM

1,800.0000

11

CEUX

Genmab A/S

25/06/2024

2:26:09 PM

1,800.0000

11

CEUX

Genmab A/S

25/06/2024

2:26:09 PM

1,800.0000

11

CEUX

Genmab A/S

25/06/2024

2:26:09 PM

1,800.0000

11

CEUX

Genmab A/S

25/06/2024

2:26:09 PM

1,800.0000

11

CEUX

Genmab A/S

25/06/2024

2:26:09 PM

1,800.0000

5

TQEX

Genmab A/S

25/06/2024

2:26:09 PM

1,800.0000

14

TQEX

Genmab A/S

25/06/2024

2:26:09 PM

1,800.0000

10

XCSE

Genmab A/S

25/06/2024

2:26:09 PM

1,800.0000

39

XCSE

Genmab A/S

25/06/2024

2:26:10 PM

1,800.0000

11

CEUX

Genmab A/S

25/06/2024

2:26:10 PM

1,800.0000

9

CEUX

Genmab A/S

25/06/2024

2:26:10 PM

1,800.0000

18

XCSE

Genmab A/S

25/06/2024

2:26:10 PM

1,800.0000

8

XCSE

Genmab A/S

25/06/2024

2:26:10 PM

1,800.0000

32

XCSE

Genmab A/S

25/06/2024

2:26:13 PM

1,800.0000

3

XCSE

Genmab A/S

25/06/2024

2:26:14 PM

1,799.5000

19

CEUX

Genmab A/S

25/06/2024

2:26:14 PM

1,799.5000

19

CEUX

Genmab A/S

25/06/2024

2:26:14 PM

1,799.5000

19

CEUX

Genmab A/S

25/06/2024

2:26:14 PM

1,799.5000

19

CEUX

Genmab A/S

25/06/2024

2:26:14 PM

1,799.5000

17

CEUX

Genmab A/S

25/06/2024

2:26:14 PM

1,799.5000

6

CEUX

Genmab A/S

25/06/2024

2:26:14 PM

1,799.5000

2

AQEU

Genmab A/S

25/06/2024

2:26:14 PM

1,799.5000

3

AQEU

Genmab A/S

25/06/2024

2:26:14 PM

1,799.5000

2

AQEU

Genmab A/S

25/06/2024

2:26:14 PM

1,799.5000

2

AQEU

Genmab A/S

25/06/2024

2:26:14 PM

1,799.5000

2

AQEU

Genmab A/S

25/06/2024

2:26:14 PM

1,799.5000

2

AQEU

94

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

2:26:14 PM

1,799.5000

2

AQEU

Genmab A/S

25/06/2024

2:26:14 PM

1,799.5000

2

AQEU

Genmab A/S

25/06/2024

2:26:14 PM

1,799.5000

2

AQEU

Genmab A/S

25/06/2024

2:26:14 PM

1,799.5000

5

TQEX

Genmab A/S

25/06/2024

2:26:14 PM

1,799.5000

5

TQEX

Genmab A/S

25/06/2024

2:26:14 PM

1,799.5000

5

TQEX

Genmab A/S

25/06/2024

2:26:14 PM

1,799.5000

5

TQEX

Genmab A/S

25/06/2024

2:26:14 PM

1,799.5000

18

XCSE

Genmab A/S

25/06/2024

2:26:14 PM

1,799.5000

20

XCSE

Genmab A/S

25/06/2024

2:26:14 PM

1,799.5000

20

XCSE

Genmab A/S

25/06/2024

2:26:14 PM

1,799.5000

18

XCSE

Genmab A/S

25/06/2024

2:26:14 PM

1,799.5000

1

XCSE

Genmab A/S

25/06/2024

2:26:14 PM

1,799.5000

45

CEUX

Genmab A/S

25/06/2024

2:26:14 PM

1,799.5000

19

CEUX

Genmab A/S

25/06/2024

2:26:14 PM

1,799.5000

46

CEUX

Genmab A/S

25/06/2024

2:26:14 PM

1,799.5000

8

CEUX

Genmab A/S

25/06/2024

2:26:14 PM

1,799.5000

10

CEUX

Genmab A/S

25/06/2024

2:27:29 PM

1,798.0000

19

XCSE

Genmab A/S

25/06/2024

2:27:29 PM

1,798.0000

9

XCSE

Genmab A/S

25/06/2024

2:27:29 PM

1,798.0000

10

XCSE

Genmab A/S

25/06/2024

2:27:29 PM

1,798.0000

10

XCSE

Genmab A/S

25/06/2024

2:27:29 PM

1,798.0000

9

XCSE

Genmab A/S

25/06/2024

2:27:29 PM

1,798.0000

19

CEUX

Genmab A/S

25/06/2024

2:27:29 PM

1,798.0000

6

CEUX

Genmab A/S

25/06/2024

2:27:29 PM

1,798.0000

18

XCSE

Genmab A/S

25/06/2024

2:32:07 PM

1,798.0000

18

CEUX

Genmab A/S

25/06/2024

2:32:07 PM

1,798.0000

18

CEUX

Genmab A/S

25/06/2024

2:32:07 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

2:32:07 PM

1,798.0000

5

TQEX

Genmab A/S

25/06/2024

2:32:25 PM

1,798.5000

98

CEUX

Genmab A/S

25/06/2024

2:32:25 PM

1,798.5000

11

CEUX

Genmab A/S

25/06/2024

2:32:25 PM

1,798.5000

47

XCSE

Genmab A/S

25/06/2024

2:32:25 PM

1,798.5000

73

XCSE

Genmab A/S

25/06/2024

2:32:25 PM

1,798.0000

19

CEUX

Genmab A/S

25/06/2024

2:32:25 PM

1,798.0000

19

CEUX

Genmab A/S

25/06/2024

2:32:25 PM

1,798.0000

19

CEUX

Genmab A/S

25/06/2024

2:32:25 PM

1,798.0000

19

CEUX

Genmab A/S

25/06/2024

2:32:25 PM

1,798.0000

19

CEUX

Genmab A/S

25/06/2024

2:32:25 PM

1,798.0000

19

CEUX

Genmab A/S

25/06/2024

2:32:25 PM

1,798.0000

19

CEUX

Genmab A/S

25/06/2024

2:32:25 PM

1,798.0000

10

CEUX

Genmab A/S

25/06/2024

2:32:25 PM

1,798.0000

3

AQEU

Genmab A/S

25/06/2024

2:32:25 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

2:32:25 PM

1,798.0000

3

AQEU

Genmab A/S

25/06/2024

2:32:25 PM

1,798.0000

5

TQEX

Genmab A/S

25/06/2024

2:32:25 PM

1,798.0000

5

TQEX

Genmab A/S

25/06/2024

2:32:25 PM

1,798.0000

53

XCSE

Genmab A/S

25/06/2024

2:32:25 PM

1,798.0000

21

XCSE

95

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

2:32:25 PM

1,798.0000

20

XCSE

Genmab A/S

25/06/2024

2:32:25 PM

1,798.0000

88

XCSE

Genmab A/S

25/06/2024

2:32:25 PM

1,798.0000

73

XCSE

Genmab A/S

25/06/2024

2:32:25 PM

1,798.0000

54

XCSE

Genmab A/S

25/06/2024

2:32:25 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

2:32:25 PM

1,798.0000

3

AQEU

Genmab A/S

25/06/2024

2:32:25 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

2:32:25 PM

1,798.0000

5

TQEX

Genmab A/S

25/06/2024

2:32:25 PM

1,798.0000

1

CEUX

Genmab A/S

25/06/2024

2:32:25 PM

1,798.0000

10

CEUX

Genmab A/S

25/06/2024

2:32:25 PM

1,798.0000

3

AQEU

Genmab A/S

25/06/2024

2:32:25 PM

1,798.0000

4

AQEU

Genmab A/S

25/06/2024

2:32:25 PM

1,798.0000

21

AQEU

Genmab A/S

25/06/2024

2:32:25 PM

1,798.0000

5

TQEX

Genmab A/S

25/06/2024

2:32:25 PM

1,798.0000

8

CEUX

Genmab A/S

25/06/2024

2:32:25 PM

1,798.0000

38

CEUX

Genmab A/S

25/06/2024

2:32:25 PM

1,798.0000

18

XCSE

Genmab A/S

25/06/2024

2:32:25 PM

1,798.0000

7

XCSE

Genmab A/S

25/06/2024

2:41:42 PM

1,799.0000

8

XCSE

Genmab A/S

25/06/2024

2:41:42 PM

1,799.0000

88

XCSE

Genmab A/S

25/06/2024

2:41:42 PM

1,799.5000

26

XCSE

Genmab A/S

25/06/2024

2:41:42 PM

1,799.5000

241

XCSE

Genmab A/S

25/06/2024

2:41:42 PM

1,799.5000

25

CEUX

Genmab A/S

25/06/2024

2:41:42 PM

1,799.5000

25

CEUX

Genmab A/S

25/06/2024

2:41:42 PM

1,799.5000

25

CEUX

Genmab A/S

25/06/2024

2:41:42 PM

1,799.5000

25

CEUX

Genmab A/S

25/06/2024

2:41:42 PM

1,799.5000

51

CEUX

Genmab A/S

25/06/2024

2:41:42 PM

1,799.5000

41

CEUX

Genmab A/S

25/06/2024

2:41:42 PM

1,799.5000

10

CEUX

Genmab A/S

25/06/2024

2:41:42 PM

1,799.5000

38

CEUX

Genmab A/S

25/06/2024

2:45:43 PM

1,797.5000

174

CEUX

Genmab A/S

25/06/2024

2:45:43 PM

1,797.5000

25

AQEU

Genmab A/S

25/06/2024

2:45:43 PM

1,797.5000

26

TQEX

Genmab A/S

25/06/2024

2:45:43 PM

1,797.5000

194

XCSE

Genmab A/S

25/06/2024

2:49:48 PM

1,799.5000

31

CEUX

Genmab A/S

25/06/2024

2:49:54 PM

1,799.5000

41

CEUX

Genmab A/S

25/06/2024

2:49:54 PM

1,799.5000

108

CEUX

Genmab A/S

25/06/2024

2:49:54 PM

1,799.5000

50

CEUX

Genmab A/S

25/06/2024

2:49:54 PM

1,799.5000

38

CEUX

Genmab A/S

25/06/2024

2:49:54 PM

1,799.5000

28

CEUX

Genmab A/S

25/06/2024

2:49:54 PM

1,799.5000

50

CEUX

Genmab A/S

25/06/2024

2:49:54 PM

1,799.5000

118

CEUX

Genmab A/S

25/06/2024

2:49:54 PM

1,799.5000

4

CEUX

Genmab A/S

25/06/2024

2:49:54 PM

1,799.5000

41

CEUX

Genmab A/S

25/06/2024

2:54:07 PM

1,801.0000

36

XCSE

Genmab A/S

25/06/2024

2:54:07 PM

1,801.0000

12

XCSE

Genmab A/S

25/06/2024

2:54:07 PM

1,801.0000

12

CEUX

Genmab A/S

25/06/2024

2:54:07 PM

1,801.0000

26

CEUX

96

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

2:56:09 PM

1,801.0000

38

XCSE

Genmab A/S

25/06/2024

2:56:09 PM

1,801.0000

10

XCSE

Genmab A/S

25/06/2024

2:56:09 PM

1,801.0000

140

XCSE

Genmab A/S

25/06/2024

2:56:57 PM

1,801.0000

70

XCSE

Genmab A/S

25/06/2024

2:56:57 PM

1,801.0000

38

XCSE

Genmab A/S

25/06/2024

2:56:57 PM

1,801.0000

38

XCSE

Genmab A/S

25/06/2024

2:56:57 PM

1,801.0000

38

XCSE

Genmab A/S

25/06/2024

2:56:57 PM

1,801.0000

25

XCSE

Genmab A/S

25/06/2024

2:56:57 PM

1,801.0000

10

TQEX

Genmab A/S

25/06/2024

2:56:57 PM

1,801.0000

45

CEUX

Genmab A/S

25/06/2024

2:56:57 PM

1,801.0000

18

CEUX

Genmab A/S

25/06/2024

2:56:57 PM

1,801.0000

22

CEUX

Genmab A/S

25/06/2024

2:56:57 PM

1,801.0000

13

CEUX

Genmab A/S

25/06/2024

2:56:57 PM

1,801.0000

18

CEUX

Genmab A/S

25/06/2024

2:56:57 PM

1,801.0000

17

CEUX

Genmab A/S

25/06/2024

2:56:57 PM

1,801.0000

3

CEUX

Genmab A/S

25/06/2024

2:56:57 PM

1,801.0000

3

CEUX

Genmab A/S

25/06/2024

2:56:57 PM

1,801.0000

20

CEUX

Genmab A/S

25/06/2024

2:56:57 PM

1,801.0000

9

CEUX

Genmab A/S

25/06/2024

2:56:57 PM

1,801.0000

16

CEUX

Genmab A/S

25/06/2024

2:56:57 PM

1,801.0000

5

AQEU

Genmab A/S

25/06/2024

2:56:57 PM

1,801.0000

9

AQEU

Genmab A/S

25/06/2024

2:56:57 PM

1,801.0000

5

AQEU

Genmab A/S

25/06/2024

2:56:57 PM

1,801.0000

9

AQEU

Genmab A/S

25/06/2024

2:56:57 PM

1,801.0000

5

AQEU

Genmab A/S

25/06/2024

2:56:57 PM

1,801.0000

25

CEUX

Genmab A/S

25/06/2024

2:56:57 PM

1,801.0000

5

TQEX

Genmab A/S

25/06/2024

2:56:57 PM

1,801.0000

1

CEUX

Genmab A/S

25/06/2024

2:57:00 PM

1,801.0000

8

CEUX

Genmab A/S

25/06/2024

2:57:00 PM

1,801.0000

1

AQEU

Genmab A/S

25/06/2024

2:57:00 PM

1,801.0000

5

TQEX

Genmab A/S

25/06/2024

2:57:00 PM

1,801.0000

9

XCSE

Genmab A/S

25/06/2024

2:59:00 PM

1,801.0000

71

CEUX

Genmab A/S

25/06/2024

2:59:00 PM

1,801.0000

10

AQEU

Genmab A/S

25/06/2024

2:59:00 PM

1,801.0000

12

TQEX

Genmab A/S

25/06/2024

2:59:00 PM

1,801.0000

28

XCSE

Genmab A/S

25/06/2024

2:59:00 PM

1,801.0000

19

XCSE

Genmab A/S

25/06/2024

2:59:00 PM

1,801.0000

80

XCSE

Genmab A/S

25/06/2024

2:59:00 PM

1,801.0000

5

XCSE

Genmab A/S

25/06/2024

2:59:00 PM

1,801.0000

31

XCSE

Genmab A/S

25/06/2024

2:59:00 PM

1,801.0000

11

XCSE

Genmab A/S

25/06/2024

2:59:00 PM

1,801.0000

20

XCSE

Genmab A/S

25/06/2024

2:59:00 PM

1,801.0000

47

XCSE

Genmab A/S

25/06/2024

2:59:00 PM

1,801.0000

12

XCSE

Genmab A/S

25/06/2024

2:59:00 PM

1,800.5000

21

XCSE

Genmab A/S

25/06/2024

3:02:03 PM

1,799.5000

42

CEUX

Genmab A/S

25/06/2024

3:02:03 PM

1,799.5000

29

CEUX

Genmab A/S

25/06/2024

3:02:49 PM

1,800.0000

1

XCSE

97

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

3:03:24 PM

1,800.5000

34

TQEX

Genmab A/S

25/06/2024

3:03:27 PM

1,800.0000

33

XCSE

Genmab A/S

25/06/2024

3:03:47 PM

1,800.5000

9

AQEU

Genmab A/S

25/06/2024

3:03:47 PM

1,800.5000

9

TQEX

Genmab A/S

25/06/2024

3:04:44 PM

1,800.0000

25

CEUX

Genmab A/S

25/06/2024

3:04:53 PM

1,800.5000

2

AQEU

Genmab A/S

25/06/2024

3:05:05 PM

1,800.0000

44

XCSE

Genmab A/S

25/06/2024

3:05:21 PM

1,800.0000

27

XCSE

Genmab A/S

25/06/2024

3:05:21 PM

1,800.0000

1

XCSE

Genmab A/S

25/06/2024

3:05:21 PM

1,800.0000

22

XCSE

Genmab A/S

25/06/2024

3:06:13 PM

1,800.5000

80

CEUX

Genmab A/S

25/06/2024

3:06:13 PM

1,800.5000

10

CEUX

Genmab A/S

25/06/2024

3:06:13 PM

1,800.5000

27

TQEX

Genmab A/S

25/06/2024

3:06:13 PM

1,800.5000

24

TQEX

Genmab A/S

25/06/2024

3:06:13 PM

1,800.5000

9

TQEX

Genmab A/S

25/06/2024

3:06:13 PM

1,800.5000

4

TQEX

Genmab A/S

25/06/2024

3:06:13 PM

1,800.5000

5

CEUX

Genmab A/S

25/06/2024

3:06:37 PM

1,800.5000

4

CEUX

Genmab A/S

25/06/2024

3:06:41 PM

1,800.0000

10

CEUX

Genmab A/S

25/06/2024

3:07:50 PM

1,800.5000

5

AQEU

Genmab A/S

25/06/2024

3:07:50 PM

1,800.5000

9

AQEU

Genmab A/S

25/06/2024

3:07:50 PM

1,800.5000

20

AQEU

Genmab A/S

25/06/2024

3:08:55 PM

1,800.0000

10

CEUX

Genmab A/S

25/06/2024

3:09:25 PM

1,800.0000

25

XCSE

Genmab A/S

25/06/2024

3:09:25 PM

1,800.0000

25

XCSE

Genmab A/S

25/06/2024

3:09:25 PM

1,800.0000

93

XCSE

Genmab A/S

25/06/2024

3:09:25 PM

1,800.0000

17

XCSE

Genmab A/S

25/06/2024

3:09:25 PM

1,800.0000

7

XCSE

Genmab A/S

25/06/2024

3:09:25 PM

1,800.0000

28

XCSE

Genmab A/S

25/06/2024

3:09:25 PM

1,800.0000

58

XCSE

Genmab A/S

25/06/2024

3:09:25 PM

1,800.0000

86

XCSE

Genmab A/S

25/06/2024

3:09:25 PM

1,800.0000

64

CEUX

Genmab A/S

25/06/2024

3:09:25 PM

1,800.0000

84

CEUX

Genmab A/S

25/06/2024

3:09:25 PM

1,800.0000

9

CEUX

Genmab A/S

25/06/2024

3:09:25 PM

1,800.0000

50

CEUX

Genmab A/S

25/06/2024

3:09:25 PM

1,800.0000

19

CEUX

Genmab A/S

25/06/2024

3:09:25 PM

1,800.0000

10

CEUX

Genmab A/S

25/06/2024

3:09:25 PM

1,800.0000

5

CEUX

Genmab A/S

25/06/2024

3:09:25 PM

1,800.0000

38

CEUX

Genmab A/S

25/06/2024

3:09:25 PM

1,800.0000

5

CEUX

Genmab A/S

25/06/2024

3:09:25 PM

1,800.0000

7

AQEU

Genmab A/S

25/06/2024

3:09:25 PM

1,800.0000

5

AQEU

Genmab A/S

25/06/2024

3:09:25 PM

1,800.0000

5

AQEU

Genmab A/S

25/06/2024

3:09:25 PM

1,800.0000

7

AQEU

Genmab A/S

25/06/2024

3:09:25 PM

1,800.0000

5

AQEU

Genmab A/S

25/06/2024

3:09:25 PM

1,800.0000

7

AQEU

Genmab A/S

25/06/2024

3:09:25 PM

1,800.0000

93

XCSE

Genmab A/S

25/06/2024

3:09:25 PM

1,800.0000

71

XCSE

98

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

3:09:25 PM

1,800.0000

5

AQEU

Genmab A/S

25/06/2024

3:09:25 PM

1,800.0000

12

AQEU

Genmab A/S

25/06/2024

3:09:25 PM

1,800.0000

4

CEUX

Genmab A/S

25/06/2024

3:09:25 PM

1,800.0000

2

AQEU

Genmab A/S

25/06/2024

3:09:25 PM

1,800.0000

9

AQEU

Genmab A/S

25/06/2024

3:09:25 PM

1,800.0000

36

CEUX

Genmab A/S

25/06/2024

3:09:25 PM

1,800.0000

9

AQEU

Genmab A/S

25/06/2024

3:09:25 PM

1,800.0000

28

XCSE

Genmab A/S

25/06/2024

3:09:25 PM

1,799.0000

12

XCSE

Genmab A/S

25/06/2024

3:09:25 PM

1,799.0000

20

CEUX

Genmab A/S

25/06/2024

3:09:25 PM

1,799.0000

9

XCSE

Genmab A/S

25/06/2024

3:09:26 PM

1,799.0000

21

XCSE

Genmab A/S

25/06/2024

3:09:26 PM

1,799.0000

20

CEUX

Genmab A/S

25/06/2024

3:13:55 PM

1,800.0000

9

CEUX

Genmab A/S

25/06/2024

3:15:31 PM

1,800.0000

18

XCSE

Genmab A/S

25/06/2024

3:15:44 PM

1,800.0000

30

CEUX

Genmab A/S

25/06/2024

3:15:44 PM

1,800.0000

41

CEUX

Genmab A/S

25/06/2024

3:15:44 PM

1,800.0000

56

XCSE

Genmab A/S

25/06/2024

3:15:44 PM

1,800.0000

20

XCSE

Genmab A/S

25/06/2024

3:15:44 PM

1,800.0000

46

XCSE

Genmab A/S

25/06/2024

3:15:44 PM

1,800.0000

80

XCSE

Genmab A/S

25/06/2024

3:15:44 PM

1,800.0000

5

CEUX

Genmab A/S

25/06/2024

3:15:44 PM

1,800.0000

42

CEUX

Genmab A/S

25/06/2024

3:15:44 PM

1,800.0000

7

TQEX

Genmab A/S

25/06/2024

3:16:21 PM

1,800.0000

24

CEUX

Genmab A/S

25/06/2024

3:17:49 PM

1,800.0000

26

XCSE

Genmab A/S

25/06/2024

3:17:49 PM

1,800.0000

23

XCSE

Genmab A/S

25/06/2024

3:17:49 PM

1,800.0000

84

XCSE

Genmab A/S

25/06/2024

3:18:21 PM

1,800.0000

18

CEUX

Genmab A/S

25/06/2024

3:20:11 PM

1,800.5000

34

XCSE

Genmab A/S

25/06/2024

3:20:11 PM

1,800.5000

6

XCSE

Genmab A/S

25/06/2024

3:20:23 PM

1,800.5000

13

CEUX

Genmab A/S

25/06/2024

3:20:23 PM

1,800.5000

8

CEUX

Genmab A/S

25/06/2024

3:20:23 PM

1,800.5000

13

CEUX

Genmab A/S

25/06/2024

3:20:32 PM

1,800.0000

92

CEUX

Genmab A/S

25/06/2024

3:20:32 PM

1,800.0000

172

CEUX

Genmab A/S

25/06/2024

3:20:32 PM

1,800.0000

56

CEUX

Genmab A/S

25/06/2024

3:20:32 PM

1,800.0000

24

CEUX

Genmab A/S

25/06/2024

3:20:32 PM

1,800.0000

10

CEUX

Genmab A/S

25/06/2024

3:20:32 PM

1,800.0000

4

AQEU

Genmab A/S

25/06/2024

3:20:32 PM

1,800.0000

31

AQEU

Genmab A/S

25/06/2024

3:20:32 PM

1,800.0000

1

AQEU

Genmab A/S

25/06/2024

3:20:32 PM

1,800.0000

4

AQEU

Genmab A/S

25/06/2024

3:20:32 PM

1,800.0000

5

TQEX

Genmab A/S

25/06/2024

3:20:32 PM

1,800.0000

2

TQEX

Genmab A/S

25/06/2024

3:20:32 PM

1,800.0000

5

TQEX

Genmab A/S

25/06/2024

3:20:32 PM

1,800.0000

4

TQEX

Genmab A/S

25/06/2024

3:20:32 PM

1,800.0000

2

TQEX

99

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

3:20:32 PM

1,800.0000

146

XCSE

Genmab A/S

25/06/2024

3:20:32 PM

1,800.0000

109

XCSE

Genmab A/S

25/06/2024

3:20:32 PM

1,800.0000

26

XCSE

Genmab A/S

25/06/2024

3:20:32 PM

1,800.0000

30

XCSE

Genmab A/S

25/06/2024

3:20:32 PM

1,800.0000

12

XCSE

Genmab A/S

25/06/2024

3:20:32 PM

1,800.0000

2

XCSE

Genmab A/S

25/06/2024

3:20:32 PM

1,800.0000

12

XCSE

Genmab A/S

25/06/2024

3:20:32 PM

1,800.0000

8

XCSE

Genmab A/S

25/06/2024

3:20:32 PM

1,800.0000

14

CEUX

Genmab A/S

25/06/2024

3:20:32 PM

1,800.0000

24

CEUX

Genmab A/S

25/06/2024

3:20:32 PM

1,800.0000

9

CEUX

Genmab A/S

25/06/2024

3:20:32 PM

1,800.0000

3

TQEX

Genmab A/S

25/06/2024

3:20:32 PM

1,800.0000

6

TQEX

Genmab A/S

25/06/2024

3:20:32 PM

1,800.0000

5

TQEX

Genmab A/S

25/06/2024

3:20:32 PM

1,800.0000

24

CEUX

Genmab A/S

25/06/2024

3:20:32 PM

1,800.0000

20

CEUX

Genmab A/S

25/06/2024

3:20:32 PM

1,800.0000

4

AQEU

Genmab A/S

25/06/2024

3:20:32 PM

1,800.0000

2

CEUX

Genmab A/S

25/06/2024

3:20:32 PM

1,799.5000

24

CEUX

Genmab A/S

25/06/2024

3:20:32 PM

1,799.5000

25

XCSE

Genmab A/S

25/06/2024

3:20:32 PM

1,799.5000

12

XCSE

Genmab A/S

25/06/2024

3:20:32 PM

1,799.5000

13

XCSE

Genmab A/S

25/06/2024

3:20:32 PM

1,799.5000

26

XCSE

Genmab A/S

25/06/2024

3:20:32 PM

1,799.5000

13

XCSE

Genmab A/S

25/06/2024

3:20:32 PM

1,799.5000

12

XCSE

Genmab A/S

25/06/2024

3:20:32 PM

1,799.5000

23

CEUX

Genmab A/S

25/06/2024

3:20:32 PM

1,799.5000

1

CEUX

Genmab A/S

25/06/2024

3:20:32 PM

1,799.5000

25

XCSE

Genmab A/S

25/06/2024

3:20:32 PM

1,799.5000

14

XCSE

Genmab A/S

25/06/2024

3:20:33 PM

1,799.5000

24

CEUX

Genmab A/S

25/06/2024

3:20:33 PM

1,799.5000

10

XCSE

Genmab A/S

25/06/2024

3:20:34 PM

1,799.5000

23

XCSE

Genmab A/S

25/06/2024

3:20:34 PM

1,799.5000

26

XCSE

Genmab A/S

25/06/2024

3:20:34 PM

1,799.5000

15

XCSE

Genmab A/S

25/06/2024

3:28:00 PM

1,798.5000

35

CEUX

Genmab A/S

25/06/2024

3:28:00 PM

1,798.5000

50

CEUX

Genmab A/S

25/06/2024

3:28:00 PM

1,798.5000

61

CEUX

Genmab A/S

25/06/2024

3:28:00 PM

1,798.5000

21

AQEU

Genmab A/S

25/06/2024

3:28:00 PM

1,798.5000

27

XCSE

Genmab A/S

25/06/2024

3:28:00 PM

1,798.5000

135

XCSE

Genmab A/S

25/06/2024

3:28:21 PM

1,798.5000

15

CEUX

Genmab A/S

25/06/2024

3:28:21 PM

1,798.5000

3

CEUX

Genmab A/S

25/06/2024

3:28:21 PM

1,798.5000

19

XCSE

Genmab A/S

25/06/2024

3:28:21 PM

1,798.5000

16

XCSE

Genmab A/S

25/06/2024

3:28:23 PM

1,798.0000

12

CEUX

Genmab A/S

25/06/2024

3:28:23 PM

1,798.0000

19

XCSE

Genmab A/S

25/06/2024

3:28:25 PM

1,798.0000

10

CEUX

Genmab A/S

25/06/2024

3:28:25 PM

1,798.0000

9

CEUX

100

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

3:28:25 PM

1,798.0000

10

CEUX

Genmab A/S

25/06/2024

3:28:25 PM

1,798.0000

6

XCSE

Genmab A/S

25/06/2024

3:28:25 PM

1,798.0000

11

XCSE

Genmab A/S

25/06/2024

3:28:25 PM

1,798.0000

8

XCSE

Genmab A/S

25/06/2024

3:28:25 PM

1,798.0000

5

TQEX

Genmab A/S

25/06/2024

3:28:25 PM

1,798.0000

5

TQEX

Genmab A/S

25/06/2024

3:30:01 PM

1,798.0000

99

CEUX

Genmab A/S

25/06/2024

3:30:01 PM

1,798.0000

144

CEUX

Genmab A/S

25/06/2024

3:30:01 PM

1,798.0000

15

TQEX

Genmab A/S

25/06/2024

3:30:01 PM

1,798.5000

5

AQEU

Genmab A/S

25/06/2024

3:30:01 PM

1,798.5000

34

AQEU

Genmab A/S

25/06/2024

3:30:01 PM

1,798.5000

5

AQEU

Genmab A/S

25/06/2024

3:30:01 PM

1,798.5000

39

XCSE

Genmab A/S

25/06/2024

3:30:01 PM

1,798.5000

39

XCSE

Genmab A/S

25/06/2024

3:30:01 PM

1,798.0000

109

XCSE

Genmab A/S

25/06/2024

3:30:01 PM

1,798.0000

115

XCSE

Genmab A/S

25/06/2024

3:30:01 PM

1,798.5000

39

XCSE

Genmab A/S

25/06/2024

3:30:01 PM

1,798.5000

72

XCSE

Genmab A/S

25/06/2024

3:30:01 PM

1,798.0000

44

XCSE

Genmab A/S

25/06/2024

3:30:01 PM

1,798.0000

14

AQEU

Genmab A/S

25/06/2024

3:30:01 PM

1,798.0000

20

AQEU

Genmab A/S

25/06/2024

3:36:48 PM

1,794.0000

50

XCSE

Genmab A/S

25/06/2024

3:36:48 PM

1,794.0000

39

CEUX

Genmab A/S

25/06/2024

3:36:48 PM

1,794.0000

11

CEUX

Genmab A/S

25/06/2024

3:36:48 PM

1,794.0000

4

XCSE

Genmab A/S

25/06/2024

3:36:48 PM

1,794.0000

50

XCSE

Genmab A/S

25/06/2024

3:36:48 PM

1,794.0000

50

CEUX

Genmab A/S

25/06/2024

3:36:48 PM

1,794.0000

7

AQEU

Genmab A/S

25/06/2024

3:36:48 PM

1,794.0000

10

CEUX

Genmab A/S

25/06/2024

3:36:48 PM

1,794.0000

20

CEUX

Genmab A/S

25/06/2024

3:36:48 PM

1,794.0000

10

CEUX

Genmab A/S

25/06/2024

3:36:48 PM

1,794.0000

54

XCSE

Genmab A/S

25/06/2024

3:38:01 PM

1,794.0000

213

XCSE

Genmab A/S

25/06/2024

3:38:01 PM

1,794.0000

5

CEUX

Genmab A/S

25/06/2024

3:38:01 PM

1,794.0000

2

AQEU

Genmab A/S

25/06/2024

3:39:44 PM

1,795.5000

9

CEUX

Genmab A/S

25/06/2024

3:39:44 PM

1,795.5000

10

CEUX

Genmab A/S

25/06/2024

3:39:44 PM

1,795.5000

19

CEUX

Genmab A/S

25/06/2024

3:39:44 PM

1,795.5000

19

CEUX

Genmab A/S

25/06/2024

3:39:44 PM

1,795.5000

2

CEUX

Genmab A/S

25/06/2024

3:39:44 PM

1,795.5000

3

AQEU

Genmab A/S

25/06/2024

3:39:44 PM

1,795.5000

16

AQEU

Genmab A/S

25/06/2024

3:39:44 PM

1,796.0000

17

CEUX

Genmab A/S

25/06/2024

3:39:44 PM

1,796.0000

17

CEUX

Genmab A/S

25/06/2024

3:39:44 PM

1,796.0000

17

CEUX

Genmab A/S

25/06/2024

3:39:44 PM

1,796.0000

8

CEUX

Genmab A/S

25/06/2024

3:39:44 PM

1,796.0000

2

CEUX

Genmab A/S

25/06/2024

3:39:44 PM

1,796.0000

2

AQEU

101

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

3:39:44 PM

1,796.0000

16

AQEU

Genmab A/S

25/06/2024

3:39:44 PM

1,796.0000

2

AQEU

Genmab A/S

25/06/2024

3:39:44 PM

1,796.0000

16

AQEU

Genmab A/S

25/06/2024

3:39:44 PM

1,796.0000

2

AQEU

Genmab A/S

25/06/2024

3:39:44 PM

1,796.0000

2

AQEU

Genmab A/S

25/06/2024

3:39:44 PM

1,796.0000

2

AQEU

Genmab A/S

25/06/2024

3:39:44 PM

1,796.0000

2

AQEU

Genmab A/S

25/06/2024

3:39:44 PM

1,796.0000

5

TQEX

Genmab A/S

25/06/2024

3:39:44 PM

1,796.0000

5

TQEX

Genmab A/S

25/06/2024

3:39:44 PM

1,796.0000

5

TQEX

Genmab A/S

25/06/2024

3:39:44 PM

1,796.0000

5

TQEX

Genmab A/S

25/06/2024

3:39:44 PM

1,796.0000

5

TQEX

Genmab A/S

25/06/2024

3:39:44 PM

1,796.0000

5

TQEX

Genmab A/S

25/06/2024

3:39:44 PM

1,796.0000

5

TQEX

Genmab A/S

25/06/2024

3:39:44 PM

1,796.0000

11

TQEX

Genmab A/S

25/06/2024

3:39:44 PM

1,795.5000

18

CEUX

Genmab A/S

25/06/2024

3:39:44 PM

1,795.5000

3

AQEU

Genmab A/S

25/06/2024

3:39:44 PM

1,795.5000

3

AQEU

Genmab A/S

25/06/2024

3:39:44 PM

1,795.5000

3

AQEU

Genmab A/S

25/06/2024

3:39:44 PM

1,795.5000

3

AQEU

Genmab A/S

25/06/2024

3:39:44 PM

1,795.5000

3

AQEU

Genmab A/S

25/06/2024

3:39:44 PM

1,795.5000

3

AQEU

Genmab A/S

25/06/2024

3:39:44 PM

1,795.5000

3

AQEU

Genmab A/S

25/06/2024

3:39:44 PM

1,795.5000

3

AQEU

Genmab A/S

25/06/2024

3:39:44 PM

1,796.0000

16

XCSE

Genmab A/S

25/06/2024

3:39:44 PM

1,796.0000

16

XCSE

Genmab A/S

25/06/2024

3:39:44 PM

1,796.0000

5

XCSE

Genmab A/S

25/06/2024

3:39:44 PM

1,796.0000

16

XCSE

Genmab A/S

25/06/2024

3:39:44 PM

1,796.0000

13

XCSE

Genmab A/S

25/06/2024

3:39:44 PM

1,795.5000

21

XCSE

Genmab A/S

25/06/2024

3:39:44 PM

1,795.5000

15

XCSE

Genmab A/S

25/06/2024

3:39:44 PM

1,795.5000

21

XCSE

Genmab A/S

25/06/2024

3:39:44 PM

1,795.5000

40

XCSE

Genmab A/S

25/06/2024

3:39:44 PM

1,795.5000

21

XCSE

Genmab A/S

25/06/2024

3:39:44 PM

1,795.0000

10

XCSE

Genmab A/S

25/06/2024

3:39:44 PM

1,795.0000

12

XCSE

Genmab A/S

25/06/2024

3:39:44 PM

1,795.5000

4

XCSE

Genmab A/S

25/06/2024

3:39:44 PM

1,795.5000

3

XCSE

Genmab A/S

25/06/2024

3:39:44 PM

1,795.5000

14

XCSE

Genmab A/S

25/06/2024

3:39:44 PM

1,795.5000

21

XCSE

Genmab A/S

25/06/2024

3:39:44 PM

1,795.5000

10

XCSE

Genmab A/S

25/06/2024

3:39:44 PM

1,795.5000

11

XCSE

Genmab A/S

25/06/2024

3:39:44 PM

1,795.5000

1

CEUX

Genmab A/S

25/06/2024

3:39:44 PM

1,795.5000

18

CEUX

Genmab A/S

25/06/2024

3:39:44 PM

1,795.5000

19

CEUX

Genmab A/S

25/06/2024

3:39:44 PM

1,795.5000

2

CEUX

Genmab A/S

25/06/2024

3:39:44 PM

1,795.5000

19

CEUX

Genmab A/S

25/06/2024

3:39:44 PM

1,795.5000

19

CEUX

102

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

3:39:44 PM

1,795.5000

1

AQEU

Genmab A/S

25/06/2024

3:39:44 PM

1,795.0000

13

CEUX

Genmab A/S

25/06/2024

3:39:44 PM

1,795.0000

7

CEUX

Genmab A/S

25/06/2024

3:39:44 PM

1,795.0000

7

CEUX

Genmab A/S

25/06/2024

3:39:44 PM

1,795.0000

13

CEUX

Genmab A/S

25/06/2024

3:39:44 PM

1,795.5000

9

AQEU

Genmab A/S

25/06/2024

3:39:44 PM

1,795.0000

20

CEUX

Genmab A/S

25/06/2024

3:39:44 PM

1,795.0000

22

XCSE

Genmab A/S

25/06/2024

3:39:44 PM

1,795.0000

20

CEUX

Genmab A/S

25/06/2024

3:39:44 PM

1,795.0000

22

XCSE

Genmab A/S

25/06/2024

3:40:51 PM

1,793.5000

3

XCSE

Genmab A/S

25/06/2024

3:40:52 PM

1,793.5000

1

CEUX

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

38

CEUX

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

10

CEUX

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

19

CEUX

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

10

CEUX

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

19

CEUX

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

10

CEUX

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

11

CEUX

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

10

CEUX

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

11

CEUX

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

8

CEUX

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

10

CEUX

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

17

CEUX

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

19

CEUX

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

1

CEUX

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

2

AQEU

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

3

AQEU

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

16

AQEU

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

9

CEUX

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

2

CEUX

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

10

CEUX

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

1

CEUX

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

2

AQEU

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

3

AQEU

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

2

AQEU

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

3

AQEU

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

2

AQEU

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

10

XCSE

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

21

XCSE

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

38

XCSE

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

10

XCSE

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

21

XCSE

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

10

XCSE

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

21

XCSE

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

10

XCSE

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

21

XCSE

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

10

XCSE

103

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

21

XCSE

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

10

XCSE

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

11

XCSE

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

6

XCSE

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

40

XCSE

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

10

XCSE

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

5

XCSE

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

10

CEUX

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

10

XCSE

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

10

CEUX

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

8

CEUX

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

5

CEUX

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

5

CEUX

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

10

XCSE

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

28

XCSE

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

38

XCSE

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

30

XCSE

Genmab A/S

25/06/2024

3:46:11 PM

1,796.0000

29

XCSE

Genmab A/S

25/06/2024

3:46:12 PM

1,796.0000

35

CEUX

Genmab A/S

25/06/2024

3:48:27 PM

1,797.5000

11

CEUX

Genmab A/S

25/06/2024

3:48:27 PM

1,797.5000

1

CEUX

Genmab A/S

25/06/2024

3:48:27 PM

1,797.5000

2

AQEU

Genmab A/S

25/06/2024

3:48:27 PM

1,797.5000

2

AQEU

Genmab A/S

25/06/2024

3:48:27 PM

1,797.5000

11

XCSE

Genmab A/S

25/06/2024

3:48:27 PM

1,797.5000

11

XCSE

Genmab A/S

25/06/2024

3:48:27 PM

1,797.5000

36

XCSE

Genmab A/S

25/06/2024

3:48:27 PM

1,797.5000

10

CEUX

Genmab A/S

25/06/2024

3:48:27 PM

1,797.5000

11

CEUX

Genmab A/S

25/06/2024

3:48:27 PM

1,797.5000

11

CEUX

Genmab A/S

25/06/2024

3:48:27 PM

1,797.5000

3

CEUX

Genmab A/S

25/06/2024

3:48:27 PM

1,797.5000

10

CEUX

Genmab A/S

25/06/2024

3:48:27 PM

1,797.5000

2

AQEU

Genmab A/S

25/06/2024

3:48:27 PM

1,797.5000

9

AQEU

Genmab A/S

25/06/2024

3:48:27 PM

1,797.5000

2

AQEU

Genmab A/S

25/06/2024

3:48:27 PM

1,797.5000

11

XCSE

Genmab A/S

25/06/2024

3:48:27 PM

1,797.5000

1

CEUX

Genmab A/S

25/06/2024

3:48:27 PM

1,797.5000

11

XCSE

Genmab A/S

25/06/2024

3:48:27 PM

1,797.5000

11

XCSE

Genmab A/S

25/06/2024

3:48:27 PM

1,797.5000

11

XCSE

Genmab A/S

25/06/2024

3:48:27 PM

1,797.5000

2

CEUX

Genmab A/S

25/06/2024

3:48:27 PM

1,797.5000

9

CEUX

Genmab A/S

25/06/2024

3:48:27 PM

1,797.5000

5

XCSE

Genmab A/S

25/06/2024

3:48:27 PM

1,797.5000

6

XCSE

Genmab A/S

25/06/2024

3:48:27 PM

1,797.5000

6

XCSE

Genmab A/S

25/06/2024

3:48:27 PM

1,797.5000

4

XCSE

Genmab A/S

25/06/2024

3:49:27 PM

1,796.5000

53

CEUX

Genmab A/S

25/06/2024

3:49:27 PM

1,796.5000

10

CEUX

Genmab A/S

25/06/2024

3:49:27 PM

1,796.5000

8

AQEU

104

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

3:49:27 PM

1,796.5000

2

AQEU

Genmab A/S

25/06/2024

3:49:27 PM

1,796.5000

36

XCSE

Genmab A/S

25/06/2024

3:49:40 PM

1,796.5000

54

XCSE

Genmab A/S

25/06/2024

3:49:40 PM

1,796.5000

5

XCSE

Genmab A/S

25/06/2024

3:50:14 PM

1,796.5000

10

XCSE

Genmab A/S

25/06/2024

3:50:25 PM

1,796.5000

53

CEUX

Genmab A/S

25/06/2024

3:50:25 PM

1,796.5000

8

AQEU

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

49

CEUX

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

17

CEUX

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

7

AQEU

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

3

AQEU

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

16

AQEU

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

8

TQEX

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

16

TQEX

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

4

TQEX

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

8

TQEX

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

7

AQEU

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

3

AQEU

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

14

AQEU

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

2

AQEU

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

55

XCSE

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

19

XCSE

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

7

XCSE

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

19

XCSE

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

20

XCSE

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

19

XCSE

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

48

XCSE

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

19

XCSE

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

23

XCSE

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

17

CEUX

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

17

CEUX

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

17

CEUX

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

17

CEUX

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

17

CEUX

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

1

CEUX

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

13

CEUX

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

4

CEUX

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

4

CEUX

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

3

AQEU

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

3

AQEU

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

13

CEUX

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

9

TQEX

Genmab A/S

25/06/2024

3:51:24 PM

1,796.0000

24

CEUX

Genmab A/S

25/06/2024

3:51:24 PM

1,796.0000

6

CEUX

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

15

CEUX

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

3

AQEU

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

3

AQEU

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

3

AQEU

105

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

3

AQEU

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

3

AQEU

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

3

AQEU

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

3

AQEU

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

3

AQEU

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

3

AQEU

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

3

AQEU

Genmab A/S

25/06/2024

3:51:24 PM

1,796.0000

24

CEUX

Genmab A/S

25/06/2024

3:51:24 PM

1,796.5000

8

AQEU

Genmab A/S

25/06/2024

3:51:24 PM

1,796.0000

26

XCSE

Genmab A/S

25/06/2024

3:51:24 PM

1,796.0000

26

XCSE

Genmab A/S

25/06/2024

3:51:24 PM

1,796.0000

26

XCSE

Genmab A/S

25/06/2024

3:51:24 PM

1,796.0000

24

CEUX

Genmab A/S

25/06/2024

3:51:24 PM

1,796.0000

24

CEUX

Genmab A/S

25/06/2024

3:51:24 PM

1,796.0000

24

CEUX

Genmab A/S

25/06/2024

3:51:24 PM

1,796.0000

24

CEUX

Genmab A/S

25/06/2024

3:51:24 PM

1,796.0000

16

XCSE

Genmab A/S

25/06/2024

3:51:24 PM

1,796.0000

10

XCSE

Genmab A/S

25/06/2024

3:51:24 PM

1,796.0000

8

XCSE

Genmab A/S

25/06/2024

3:51:24 PM

1,796.0000

24

CEUX

Genmab A/S

25/06/2024

3:51:24 PM

1,796.0000

3

CEUX

Genmab A/S

25/06/2024

3:51:24 PM

1,796.0000

18

XCSE

Genmab A/S

25/06/2024

3:51:24 PM

1,796.0000

18

XCSE

Genmab A/S

25/06/2024

3:51:24 PM

1,796.0000

8

XCSE

Genmab A/S

25/06/2024

3:51:24 PM

1,796.0000

26

XCSE

Genmab A/S

25/06/2024

3:51:24 PM

1,796.0000

2

CEUX

Genmab A/S

25/06/2024

3:51:24 PM

1,796.0000

12

CEUX

Genmab A/S

25/06/2024

3:51:25 PM

1,795.5000

24

XCSE

Genmab A/S

25/06/2024

3:55:26 PM

1,796.0000

10

CEUX

Genmab A/S

25/06/2024

3:55:26 PM

1,796.0000

9

CEUX

Genmab A/S

25/06/2024

3:55:26 PM

1,796.0000

2

AQEU

Genmab A/S

25/06/2024

3:55:26 PM

1,796.0000

11

XCSE

Genmab A/S

25/06/2024

3:55:26 PM

1,796.0000

4

CEUX

Genmab A/S

25/06/2024

3:55:26 PM

1,796.0000

6

CEUX

Genmab A/S

25/06/2024

3:55:26 PM

1,796.0000

11

XCSE

Genmab A/S

25/06/2024

3:55:26 PM

1,796.0000

10

CEUX

Genmab A/S

25/06/2024

3:55:26 PM

1,796.0000

10

CEUX

Genmab A/S

25/06/2024

3:55:26 PM

1,796.0000

6

CEUX

Genmab A/S

25/06/2024

3:55:26 PM

1,796.0000

2

AQEU

Genmab A/S

25/06/2024

3:55:26 PM

1,796.0000

16

AQEU

Genmab A/S

25/06/2024

3:55:26 PM

1,796.0000

11

XCSE

Genmab A/S

25/06/2024

3:55:26 PM

1,796.0000

39

XCSE

Genmab A/S

25/06/2024

3:55:26 PM

1,796.0000

10

CEUX

Genmab A/S

25/06/2024

3:55:26 PM

1,796.0000

11

XCSE

Genmab A/S

25/06/2024

3:56:32 PM

1,795.5000

22

XCSE

Genmab A/S

25/06/2024

3:56:32 PM

1,795.5000

15

XCSE

Genmab A/S

25/06/2024

3:57:39 PM

1,796.0000

65

CEUX

Genmab A/S

25/06/2024

3:57:39 PM

1,796.0000

63

XCSE

106

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

3:57:39 PM

1,796.0000

8

XCSE

Genmab A/S

25/06/2024

3:57:39 PM

1,796.0000

2

XCSE

Genmab A/S

25/06/2024

3:57:39 PM

1,796.0000

8

XCSE

Genmab A/S

25/06/2024

3:57:39 PM

1,796.0000

65

CEUX

Genmab A/S

25/06/2024

3:57:39 PM

1,796.0000

73

XCSE

Genmab A/S

25/06/2024

3:57:40 PM

1,795.5000

19

XCSE

Genmab A/S

25/06/2024

3:57:40 PM

1,795.5000

54

XCSE

Genmab A/S

25/06/2024

3:57:40 PM

1,795.5000

16

CEUX

Genmab A/S

25/06/2024

3:57:40 PM

1,795.5000

10

AQEU

Genmab A/S

25/06/2024

3:57:59 PM

1,796.0000

1

XCSE

Genmab A/S

25/06/2024

3:58:06 PM

1,796.0000

10

XCSE

Genmab A/S

25/06/2024

3:58:25 PM

1,796.0000

11

CEUX

Genmab A/S

25/06/2024

3:58:25 PM

1,796.0000

11

CEUX

Genmab A/S

25/06/2024

3:58:25 PM

1,796.0000

3

CEUX

Genmab A/S

25/06/2024

3:58:25 PM

1,796.0000

2

AQEU

Genmab A/S

25/06/2024

3:58:25 PM

1,796.0000

14

AQEU

Genmab A/S

25/06/2024

3:58:25 PM

1,796.0000

11

XCSE

Genmab A/S

25/06/2024

3:58:25 PM

1,796.0000

32

XCSE

Genmab A/S

25/06/2024

3:58:25 PM

1,796.0000

11

CEUX

Genmab A/S

25/06/2024

3:58:25 PM

1,796.0000

11

XCSE

Genmab A/S

25/06/2024

4:00:25 PM

1,796.0000

39

CEUX

Genmab A/S

25/06/2024

4:00:25 PM

1,796.0000

6

AQEU

Genmab A/S

25/06/2024

4:00:49 PM

1,796.5000

11

XCSE

Genmab A/S

25/06/2024

4:01:13 PM

1,798.0000

1

AQEU

Genmab A/S

25/06/2024

4:01:13 PM

1,798.0000

27

AQEU

Genmab A/S

25/06/2024

4:01:25 PM

1,797.5000

29

CEUX

Genmab A/S

25/06/2024

4:01:47 PM

1,798.0000

38

CEUX

Genmab A/S

25/06/2024

4:01:47 PM

1,798.0000

38

CEUX

Genmab A/S

25/06/2024

4:01:47 PM

1,798.0000

6

AQEU

Genmab A/S

25/06/2024

4:01:47 PM

1,798.0000

6

AQEU

Genmab A/S

25/06/2024

4:01:47 PM

1,798.0000

6

AQEU

Genmab A/S

25/06/2024

4:01:47 PM

1,798.0000

6

AQEU

Genmab A/S

25/06/2024

4:01:47 PM

1,798.0000

6

AQEU

Genmab A/S

25/06/2024

4:01:47 PM

1,798.0000

6

AQEU

Genmab A/S

25/06/2024

4:01:47 PM

1,798.0000

6

AQEU

Genmab A/S

25/06/2024

4:01:47 PM

1,798.0000

2

AQEU

Genmab A/S

25/06/2024

4:02:08 PM

1,798.0000

63

CEUX

Genmab A/S

25/06/2024

4:02:08 PM

1,798.0000

44

XCSE

Genmab A/S

25/06/2024

4:02:08 PM

1,798.0000

70

XCSE

Genmab A/S

25/06/2024

4:02:08 PM

1,798.0000

3

XCSE

Genmab A/S

25/06/2024

4:02:08 PM

1,798.0000

11

XCSE

Genmab A/S

25/06/2024

4:02:08 PM

1,798.0000

30

XCSE

Genmab A/S

25/06/2024

4:02:08 PM

1,798.0000

70

XCSE

Genmab A/S

25/06/2024

4:02:08 PM

1,798.0000

17

XCSE

Genmab A/S

25/06/2024

4:02:08 PM

1,798.0000

18

XCSE

Genmab A/S

25/06/2024

4:02:08 PM

1,798.0000

70

XCSE

Genmab A/S

25/06/2024

4:02:08 PM

1,798.0000

70

XCSE

Genmab A/S

25/06/2024

4:02:08 PM

1,798.0000

50

CEUX

107

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

4:03:26 PM

1,797.5000

62

CEUX

Genmab A/S

25/06/2024

4:04:15 PM

1,797.5000

11

XCSE

Genmab A/S

25/06/2024

4:05:01 PM

1,799.5000

25

CEUX

Genmab A/S

25/06/2024

4:05:01 PM

1,799.5000

26

XCSE

Genmab A/S

25/06/2024

4:05:03 PM

1,799.5000

25

CEUX

Genmab A/S

25/06/2024

4:05:03 PM

1,799.5000

26

XCSE

Genmab A/S

25/06/2024

4:05:10 PM

1,799.5000

24

CEUX

Genmab A/S

25/06/2024

4:05:10 PM

1,799.5000

63

CEUX

Genmab A/S

25/06/2024

4:05:10 PM

1,799.5000

63

CEUX

Genmab A/S

25/06/2024

4:05:10 PM

1,799.5000

6

CEUX

Genmab A/S

25/06/2024

4:05:10 PM

1,799.5000

26

XCSE

Genmab A/S

25/06/2024

4:05:10 PM

1,799.5000

69

XCSE

Genmab A/S

25/06/2024

4:05:10 PM

1,799.5000

4

XCSE

Genmab A/S

25/06/2024

4:05:10 PM

1,799.5000

83

XCSE

Genmab A/S

25/06/2024

4:05:10 PM

1,799.5000

69

XCSE

Genmab A/S

25/06/2024

4:05:25 PM

1,798.5000

23

XCSE

Genmab A/S

25/06/2024

4:05:25 PM

1,798.5000

4

XCSE

Genmab A/S

25/06/2024

4:06:25 PM

1,798.5000

22

CEUX

Genmab A/S

25/06/2024

4:06:25 PM

1,798.5000

23

XCSE

Genmab A/S

25/06/2024

4:07:26 PM

1,798.5000

22

CEUX

Genmab A/S

25/06/2024

4:07:26 PM

1,798.5000

1

CEUX

Genmab A/S

25/06/2024

4:07:26 PM

1,798.5000

23

XCSE

Genmab A/S

25/06/2024

4:07:26 PM

1,798.5000

2

CEUX

Genmab A/S

25/06/2024

4:07:26 PM

1,798.5000

23

XCSE

Genmab A/S

25/06/2024

4:08:26 PM

1,799.5000

4

CEUX

Genmab A/S

25/06/2024

4:08:26 PM

1,799.5000

9

AQEU

Genmab A/S

25/06/2024

4:08:26 PM

1,799.5000

16

AQEU

Genmab A/S

25/06/2024

4:08:26 PM

1,799.5000

2

TQEX

Genmab A/S

25/06/2024

4:08:26 PM

1,799.5000

12

XCSE

Genmab A/S

25/06/2024

4:08:59 PM

1,799.5000

9

XCSE

Genmab A/S

25/06/2024

4:09:25 PM

1,799.5000

44

CEUX

Genmab A/S

25/06/2024

4:09:25 PM

1,799.5000

49

CEUX

Genmab A/S

25/06/2024

4:09:25 PM

1,799.5000

59

CEUX

Genmab A/S

25/06/2024

4:09:25 PM

1,799.5000

44

CEUX

Genmab A/S

25/06/2024

4:09:25 PM

1,799.5000

5

CEUX

Genmab A/S

25/06/2024

4:09:25 PM

1,799.5000

16

AQEU

Genmab A/S

25/06/2024

4:09:25 PM

1,799.5000

38

XCSE

Genmab A/S

25/06/2024

4:09:25 PM

1,799.5000

48

XCSE

Genmab A/S

25/06/2024

4:09:25 PM

1,799.5000

121

XCSE

Genmab A/S

25/06/2024

4:09:25 PM

1,799.5000

8

XCSE

Genmab A/S

25/06/2024

4:09:25 PM

1,799.5000

39

XCSE

Genmab A/S

25/06/2024

4:09:25 PM

1,799.5000

11

XCSE

Genmab A/S

25/06/2024

4:09:25 PM

1,799.5000

44

CEUX

Genmab A/S

25/06/2024

4:09:25 PM

1,799.5000

44

CEUX

Genmab A/S

25/06/2024

4:09:25 PM

1,799.5000

12

CEUX

Genmab A/S

25/06/2024

4:09:25 PM

1,799.5000

8

CEUX

Genmab A/S

25/06/2024

4:09:25 PM

1,799.5000

17

CEUX

Genmab A/S

25/06/2024

4:09:25 PM

1,799.5000

10

XCSE

108

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

4:09:25 PM

1,799.5000

19

CEUX

Genmab A/S

25/06/2024

4:09:25 PM

1,799.5000

27

XCSE

Genmab A/S

25/06/2024

4:09:25 PM

1,799.5000

17

XCSE

Genmab A/S

25/06/2024

4:09:25 PM

1,799.5000

40

XCSE

Genmab A/S

25/06/2024

4:09:25 PM

1,799.5000

8

XCSE

Genmab A/S

25/06/2024

4:10:11 PM

1,800.5000

11

CEUX

Genmab A/S

25/06/2024

4:10:11 PM

1,800.5000

2

AQEU

Genmab A/S

25/06/2024

4:10:11 PM

1,800.5000

16

AQEU

Genmab A/S

25/06/2024

4:10:11 PM

1,800.5000

2

AQEU

Genmab A/S

25/06/2024

4:10:11 PM

1,800.5000

2

AQEU

Genmab A/S

25/06/2024

4:10:11 PM

1,800.5000

2

AQEU

Genmab A/S

25/06/2024

4:10:11 PM

1,800.5000

12

XCSE

Genmab A/S

25/06/2024

4:10:11 PM

1,800.5000

12

XCSE

Genmab A/S

25/06/2024

4:10:11 PM

1,800.5000

38

XCSE

Genmab A/S

25/06/2024

4:10:11 PM

1,800.5000

12

XCSE

Genmab A/S

25/06/2024

4:10:11 PM

1,800.5000

2

XCSE

Genmab A/S

25/06/2024

4:10:11 PM

1,800.5000

12

XCSE

Genmab A/S

25/06/2024

4:10:11 PM

1,800.5000

11

CEUX

Genmab A/S

25/06/2024

4:10:11 PM

1,800.5000

11

CEUX

Genmab A/S

25/06/2024

4:10:11 PM

1,800.5000

11

CEUX

Genmab A/S

25/06/2024

4:10:11 PM

1,800.5000

11

CEUX

Genmab A/S

25/06/2024

4:10:11 PM

1,800.5000

6

CEUX

Genmab A/S

25/06/2024

4:10:11 PM

1,800.5000

2

AQEU

Genmab A/S

25/06/2024

4:10:11 PM

1,800.5000

1

AQEU

Genmab A/S

25/06/2024

4:10:11 PM

1,800.5000

11

CEUX

Genmab A/S

25/06/2024

4:10:11 PM

1,800.5000

11

CEUX

Genmab A/S

25/06/2024

4:10:11 PM

1,800.5000

12

XCSE

Genmab A/S

25/06/2024

4:10:11 PM

1,800.5000

12

XCSE

Genmab A/S

25/06/2024

4:10:12 PM

1,800.5000

12

XCSE

Genmab A/S

25/06/2024

4:10:12 PM

1,800.5000

11

CEUX

Genmab A/S

25/06/2024

4:10:13 PM

1,800.5000

12

XCSE

Genmab A/S

25/06/2024

4:10:13 PM

1,800.5000

11

CEUX

Genmab A/S

25/06/2024

4:10:13 PM

1,800.5000

12

XCSE

Genmab A/S

25/06/2024

4:10:14 PM

1,800.5000

12

XCSE

Genmab A/S

25/06/2024

4:10:17 PM

1,800.5000

12

XCSE

Genmab A/S

25/06/2024

4:10:17 PM

1,800.5000

12

XCSE

Genmab A/S

25/06/2024

4:10:17 PM

1,800.5000

12

XCSE

Genmab A/S

25/06/2024

4:10:17 PM

1,800.5000

12

XCSE

Genmab A/S

25/06/2024

4:10:17 PM

1,800.5000

12

XCSE

Genmab A/S

25/06/2024

4:10:17 PM

1,800.0000

5

XCSE

Genmab A/S

25/06/2024

4:10:17 PM

1,800.0000

13

XCSE

Genmab A/S

25/06/2024

4:10:17 PM

1,800.0000

25

XCSE

Genmab A/S

25/06/2024

4:10:23 PM

1,799.5000

22

XCSE

Genmab A/S

25/06/2024

4:10:23 PM

1,799.5000

21

CEUX

Genmab A/S

25/06/2024

4:11:27 PM

1,799.0000

66

CEUX

Genmab A/S

25/06/2024

4:13:26 PM

1,798.5000

23

CEUX

Genmab A/S

25/06/2024

4:13:26 PM

1,798.5000

25

XCSE

Genmab A/S

25/06/2024

4:13:26 PM

1,798.5000

23

CEUX

109

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

4:13:26 PM

1,798.5000

25

XCSE

Genmab A/S

25/06/2024

4:14:43 PM

1,800.5000

34

CEUX

Genmab A/S

25/06/2024

4:15:23 PM

1,800.0000

54

XCSE

Genmab A/S

25/06/2024

4:15:23 PM

1,800.0000

24

XCSE

Genmab A/S

25/06/2024

4:15:23 PM

1,800.0000

30

XCSE

Genmab A/S

25/06/2024

4:15:23 PM

1,800.0000

20

XCSE

Genmab A/S

25/06/2024

4:15:23 PM

1,800.0000

54

XCSE

Genmab A/S

25/06/2024

4:15:23 PM

1,800.0000

28

XCSE

Genmab A/S

25/06/2024

4:15:24 PM

1,800.0000

54

XCSE

Genmab A/S

25/06/2024

4:15:24 PM

1,800.0000

65

XCSE

Genmab A/S

25/06/2024

4:15:24 PM

1,800.0000

17

XCSE

Genmab A/S

25/06/2024

4:15:24 PM

1,800.0000

37

XCSE

Genmab A/S

25/06/2024

4:16:24 PM

1,800.0000

54

XCSE

Genmab A/S

25/06/2024

4:16:49 PM

1,800.0000

54

XCSE

Genmab A/S

25/06/2024

4:16:49 PM

1,800.0000

27

XCSE

Genmab A/S

25/06/2024

4:16:49 PM

1,800.0000

27

XCSE

Genmab A/S

25/06/2024

4:16:49 PM

1,800.0000

54

XCSE

Genmab A/S

25/06/2024

4:16:49 PM

1,800.0000

54

XCSE

Genmab A/S

25/06/2024

4:17:01 PM

1,800.0000

30

XCSE

Genmab A/S

25/06/2024

4:17:01 PM

1,800.0000

24

XCSE

Genmab A/S

25/06/2024

4:17:01 PM

1,800.0000

24

XCSE

Genmab A/S

25/06/2024

4:17:01 PM

1,800.0000

30

XCSE

Genmab A/S

25/06/2024

4:17:01 PM

1,800.0000

24

XCSE

Genmab A/S

25/06/2024

4:17:01 PM

1,800.0000

12

XCSE

Genmab A/S

25/06/2024

4:17:01 PM

1,800.0000

42

XCSE

Genmab A/S

25/06/2024

4:17:01 PM

1,800.0000

4

XCSE

Genmab A/S

25/06/2024

4:17:01 PM

1,800.0000

50

XCSE

Genmab A/S

25/06/2024

4:17:01 PM

1,800.0000

54

XCSE

Genmab A/S

25/06/2024

4:17:01 PM

1,800.0000

41

XCSE

Genmab A/S

25/06/2024

4:17:01 PM

1,800.0000

13

XCSE

Genmab A/S

25/06/2024

4:17:01 PM

1,800.0000

54

XCSE

Genmab A/S

25/06/2024

4:17:01 PM

1,800.0000

41

XCSE

Genmab A/S

25/06/2024

4:17:02 PM

1,800.0000

54

XCSE

Genmab A/S

25/06/2024

4:17:02 PM

1,800.0000

54

XCSE

Genmab A/S

25/06/2024

4:17:02 PM

1,800.0000

52

XCSE

Genmab A/S

25/06/2024

4:17:03 PM

1,800.0000

54

XCSE

Genmab A/S

25/06/2024

4:17:03 PM

1,800.0000

54

XCSE

Genmab A/S

25/06/2024

4:19:57 PM

1,802.5000

32

CEUX

Genmab A/S

25/06/2024

4:20:02 PM

1,802.5000

36

XCSE

Genmab A/S

25/06/2024

4:20:02 PM

1,802.5000

36

XCSE

Genmab A/S

25/06/2024

4:20:02 PM

1,802.5000

32

CEUX

Genmab A/S

25/06/2024

4:20:02 PM

1,802.5000

32

CEUX

Genmab A/S

25/06/2024

4:20:02 PM

1,802.5000

13

CEUX

Genmab A/S

25/06/2024

4:20:02 PM

1,802.5000

8

CEUX

Genmab A/S

25/06/2024

4:20:26 PM

1,802.0000

53

CEUX

Genmab A/S

25/06/2024

4:20:26 PM

1,802.0000

53

CEUX

Genmab A/S

25/06/2024

4:20:26 PM

1,802.0000

47

CEUX

Genmab A/S

25/06/2024

4:20:26 PM

1,802.0000

3

CEUX

110

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

4:20:26 PM

1,802.0000

3

CEUX

Genmab A/S

25/06/2024

4:20:26 PM

1,802.0000

8

AQEU

Genmab A/S

25/06/2024

4:20:26 PM

1,802.0000

8

AQEU

Genmab A/S

25/06/2024

4:20:26 PM

1,802.0000

8

AQEU

Genmab A/S

25/06/2024

4:20:26 PM

1,802.0000

2

AQEU

Genmab A/S

25/06/2024

4:20:26 PM

1,802.0000

8

AQEU

Genmab A/S

25/06/2024

4:20:26 PM

1,802.0000

8

AQEU

Genmab A/S

25/06/2024

4:20:26 PM

1,802.0000

59

XCSE

Genmab A/S

25/06/2024

4:20:26 PM

1,802.0000

59

XCSE

Genmab A/S

25/06/2024

4:20:26 PM

1,802.0000

23

XCSE

Genmab A/S

25/06/2024

4:20:26 PM

1,802.0000

36

XCSE

Genmab A/S

25/06/2024

4:20:26 PM

1,802.0000

2

AQEU

Genmab A/S

25/06/2024

4:20:26 PM

1,801.5000

37

XCSE

Genmab A/S

25/06/2024

4:20:26 PM

1,801.5000

7

TQEX

Genmab A/S

25/06/2024

4:20:26 PM

1,801.5000

11

XCSE

Genmab A/S

25/06/2024

4:20:26 PM

1,801.5000

45

XCSE

Genmab A/S

25/06/2024

4:20:26 PM

1,801.5000

48

XCSE

Genmab A/S

25/06/2024

4:20:26 PM

1,801.5000

8

XCSE

Genmab A/S

25/06/2024

4:20:26 PM

1,801.5000

37

XCSE

Genmab A/S

25/06/2024

4:20:26 PM

1,801.5000

37

XCSE

Genmab A/S

25/06/2024

4:23:18 PM

1,800.0000

57

XCSE

Genmab A/S

25/06/2024

4:26:32 PM

1,800.0000

106

XCSE

Genmab A/S

25/06/2024

4:26:32 PM

1,800.0000

12

XCSE

Genmab A/S

25/06/2024

4:26:32 PM

1,800.0000

11

XCSE

Genmab A/S

25/06/2024

4:26:32 PM

1,800.0000

39

XCSE

Genmab A/S

25/06/2024

4:27:26 PM

1,800.0000

2

AQEU

Genmab A/S

25/06/2024

4:27:26 PM

1,800.0000

2

AQEU

Genmab A/S

25/06/2024

4:27:26 PM

1,800.0000

36

AQEU

Genmab A/S

25/06/2024

4:27:39 PM

1,800.0000

9

CEUX

Genmab A/S

25/06/2024

4:27:39 PM

1,800.0000

22

CEUX

Genmab A/S

25/06/2024

4:27:39 PM

1,800.0000

2

AQEU

Genmab A/S

25/06/2024

4:27:39 PM

1,800.0000

2

AQEU

Genmab A/S

25/06/2024

4:27:39 PM

1,800.0000

2

TQEX

Genmab A/S

25/06/2024

4:27:39 PM

1,800.0000

2

TQEX

Genmab A/S

25/06/2024

4:27:51 PM

1,800.0000

36

CEUX

Genmab A/S

25/06/2024

4:28:02 PM

1,800.0000

5

CEUX

Genmab A/S

25/06/2024

4:28:02 PM

1,800.0000

7

CEUX

Genmab A/S

25/06/2024

4:28:02 PM

1,800.0000

25

CEUX

Genmab A/S

25/06/2024

4:28:15 PM

1,800.0000

3

CEUX

Genmab A/S

25/06/2024

4:28:15 PM

1,800.0000

4

CEUX

Genmab A/S

25/06/2024

4:28:15 PM

1,800.0000

4

CEUX

Genmab A/S

25/06/2024

4:28:15 PM

1,800.0000

9

CEUX

Genmab A/S

25/06/2024

4:28:15 PM

1,800.0000

2

AQEU

Genmab A/S

25/06/2024

4:28:15 PM

1,800.0000

2

AQEU

Genmab A/S

25/06/2024

4:28:15 PM

1,800.0000

13

AQEU

Genmab A/S

25/06/2024

4:28:27 PM

1,800.0000

5

CEUX

Genmab A/S

25/06/2024

4:28:27 PM

1,800.0000

26

CEUX

Genmab A/S

25/06/2024

4:28:27 PM

1,800.0000

2

AQEU

111

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

4:28:27 PM

1,800.0000

2

TQEX

Genmab A/S

25/06/2024

4:28:27 PM

1,800.0000

2

XCSE

Genmab A/S

25/06/2024

4:28:39 PM

1,800.0000

36

TQEX

Genmab A/S

25/06/2024

4:28:48 PM

1,800.0000

37

CEUX

Genmab A/S

25/06/2024

4:28:58 PM

1,799.5000

5

AQEU

Genmab A/S

25/06/2024

4:28:58 PM

1,799.5000

5

AQEU

Genmab A/S

25/06/2024

4:28:58 PM

1,799.5000

25

XCSE

Genmab A/S

25/06/2024

4:28:58 PM

1,799.5000

19

XCSE

Genmab A/S

25/06/2024

4:28:58 PM

1,799.5000

19

XCSE

Genmab A/S

25/06/2024

4:28:58 PM

1,799.5000

25

XCSE

Genmab A/S

25/06/2024

4:28:58 PM

1,799.5000

5

XCSE

Genmab A/S

25/06/2024

4:28:58 PM

1,799.5000

33

XCSE

Genmab A/S

25/06/2024

4:28:58 PM

1,799.5000

25

XCSE

Genmab A/S

25/06/2024

4:28:58 PM

1,799.5000

17

XCSE

Genmab A/S

25/06/2024

4:28:58 PM

1,799.5000

5

AQEU

Genmab A/S

25/06/2024

4:28:58 PM

1,799.5000

6

XCSE

Genmab A/S

25/06/2024

4:28:58 PM

1,799.5000

5

AQEU

Genmab A/S

25/06/2024

4:28:58 PM

1,799.5000

30

XCSE

Genmab A/S

25/06/2024

4:28:58 PM

1,799.5000

2

XCSE

Genmab A/S

25/06/2024

4:28:58 PM

1,799.5000

25

XCSE

Genmab A/S

25/06/2024

4:28:58 PM

1,799.5000

3

XCSE

Genmab A/S

25/06/2024

4:28:59 PM

1,799.5000

38

XCSE

Genmab A/S

25/06/2024

4:28:59 PM

1,799.5000

25

XCSE

Genmab A/S

25/06/2024

4:29:42 PM

1,799.0000

3

AQEU

Genmab A/S

25/06/2024

4:29:42 PM

1,799.0000

16

AQEU

Genmab A/S

25/06/2024

4:30:12 PM

1,799.0000

20

XCSE

Genmab A/S

25/06/2024

4:30:12 PM

1,799.0000

5

XCSE

Genmab A/S

25/06/2024

4:31:00 PM

1,802.0000

20

CEUX

Genmab A/S

25/06/2024

4:31:00 PM

1,802.0000

13

CEUX

Genmab A/S

25/06/2024

4:31:00 PM

1,802.0000

24

XCSE

Genmab A/S

25/06/2024

4:31:00 PM

1,802.0000

24

XCSE

Genmab A/S

25/06/2024

4:31:00 PM

1,802.0000

24

XCSE

Genmab A/S

25/06/2024

4:31:00 PM

1,802.0000

24

XCSE

Genmab A/S

25/06/2024

4:31:00 PM

1,802.0000

24

XCSE

Genmab A/S

25/06/2024

4:31:02 PM

1,802.0000

19

XCSE

Genmab A/S

25/06/2024

4:31:02 PM

1,802.0000

1

XCSE

Genmab A/S

25/06/2024

4:31:02 PM

1,802.0000

4

XCSE

Genmab A/S

25/06/2024

4:31:02 PM

1,802.0000

24

XCSE

Genmab A/S

25/06/2024

4:31:02 PM

1,802.0000

24

XCSE

Genmab A/S

25/06/2024

4:31:03 PM

1,802.0000

24

XCSE

Genmab A/S

25/06/2024

4:31:03 PM

1,802.0000

19

XCSE

Genmab A/S

25/06/2024

4:31:03 PM

1,802.0000

5

XCSE

Genmab A/S

25/06/2024

4:31:03 PM

1,802.0000

19

XCSE

Genmab A/S

25/06/2024

4:31:03 PM

1,802.0000

23

XCSE

Genmab A/S

25/06/2024

4:31:03 PM

1,802.0000

1

XCSE

Genmab A/S

25/06/2024

4:31:04 PM

1,802.0000

13

XCSE

Genmab A/S

25/06/2024

4:31:04 PM

1,802.0000

11

XCSE

Genmab A/S

25/06/2024

4:31:07 PM

1,802.0000

24

XCSE

112

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

4:31:07 PM

1,802.0000

24

XCSE

Genmab A/S

25/06/2024

4:31:07 PM

1,802.0000

24

XCSE

Genmab A/S

25/06/2024

4:31:08 PM

1,802.0000

4

XCSE

Genmab A/S

25/06/2024

4:31:08 PM

1,802.0000

18

XCSE

Genmab A/S

25/06/2024

4:31:08 PM

1,802.0000

2

XCSE

Genmab A/S

25/06/2024

4:31:08 PM

1,802.0000

4

XCSE

Genmab A/S

25/06/2024

4:31:08 PM

1,802.0000

20

XCSE

Genmab A/S

25/06/2024

4:31:08 PM

1,802.0000

24

XCSE

Genmab A/S

25/06/2024

4:31:08 PM

1,802.0000

24

XCSE

Genmab A/S

25/06/2024

4:33:02 PM

1,801.0000

176

XCSE

Genmab A/S

25/06/2024

4:33:02 PM

1,801.0000

13

XCSE

Genmab A/S

25/06/2024

4:33:02 PM

1,801.0000

176

XCSE

Genmab A/S

25/06/2024

4:33:02 PM

1,801.0000

19

XCSE

Genmab A/S

25/06/2024

4:33:03 PM

1,801.0000

17

XCSE

Genmab A/S

25/06/2024

4:34:12 PM

1,801.5000

50

XCSE

Genmab A/S

25/06/2024

4:34:12 PM

1,801.5000

27

XCSE

Genmab A/S

25/06/2024

4:34:12 PM

1,801.5000

77

XCSE

Genmab A/S

25/06/2024

4:34:12 PM

1,801.5000

17

XCSE

Genmab A/S

25/06/2024

4:34:13 PM

1,801.5000

60

XCSE

Genmab A/S

25/06/2024

4:34:25 PM

1,801.0000

5

AQEU

Genmab A/S

25/06/2024

4:34:25 PM

1,801.0000

21

AQEU

Genmab A/S

25/06/2024

4:34:25 PM

1,801.0000

36

XCSE

Genmab A/S

25/06/2024

4:34:25 PM

1,801.0000

50

XCSE

Genmab A/S

25/06/2024

4:34:25 PM

1,801.0000

51

XCSE

Genmab A/S

25/06/2024

4:34:25 PM

1,801.0000

5

AQEU

Genmab A/S

25/06/2024

4:34:25 PM

1,801.0000

17

XCSE

Genmab A/S

25/06/2024

4:35:26 PM

1,800.0000

30

XCSE

Genmab A/S

25/06/2024

4:35:26 PM

1,800.0000

20

XCSE

Genmab A/S

25/06/2024

4:36:10 PM

1,800.5000

171

XCSE

Genmab A/S

25/06/2024

4:36:10 PM

1,800.5000

20

XCSE

Genmab A/S

25/06/2024

4:36:10 PM

1,800.5000

25

XCSE

Genmab A/S

25/06/2024

4:36:22 PM

1,800.0000

41

XCSE

Genmab A/S

25/06/2024

4:36:22 PM

1,800.0000

33

XCSE

Genmab A/S

25/06/2024

4:36:22 PM

1,800.0000

26

XCSE

Genmab A/S

25/06/2024

4:36:22 PM

1,800.0000

15

XCSE

Genmab A/S

25/06/2024

4:37:26 PM

1,798.5000

42

XCSE

Genmab A/S

25/06/2024

4:37:26 PM

1,798.5000

35

XCSE

Genmab A/S

25/06/2024

4:37:26 PM

1,798.5000

14

XCSE

Genmab A/S

25/06/2024

4:37:26 PM

1,798.5000

15

XCSE

Genmab A/S

25/06/2024

4:37:26 PM

1,798.5000

13

XCSE

Genmab A/S

25/06/2024

4:37:26 PM

1,798.5000

42

XCSE

Genmab A/S

25/06/2024

4:38:27 PM

1,799.0000

43

XCSE

Genmab A/S

25/06/2024

4:39:23 PM

1,799.5000

176

AQEU

Genmab A/S

25/06/2024

4:40:03 PM

1,800.5000

177

XCSE

Genmab A/S

25/06/2024

4:40:03 PM

1,800.5000

121

XCSE

Genmab A/S

25/06/2024

4:40:03 PM

1,800.5000

92

XCSE

Genmab A/S

25/06/2024

4:40:03 PM

1,800.5000

85

XCSE

Genmab A/S

25/06/2024

4:40:03 PM

1,800.5000

15

XCSE

113

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

4:41:04 PM

1,800.0000

14

XCSE

Genmab A/S

25/06/2024

4:41:04 PM

1,800.0000

36

XCSE

Genmab A/S

25/06/2024

4:42:23 PM

1,801.0000

339

XCSE

Genmab A/S

25/06/2024

4:42:23 PM

1,800.5000

42

XCSE

Genmab A/S

25/06/2024

4:43:23 PM

1,800.0000

333

XCSE

Genmab A/S

25/06/2024

4:44:02 PM

1,799.5000

179

XCSE

Genmab A/S

25/06/2024

4:44:02 PM

1,799.5000

50

XCSE

Genmab A/S

25/06/2024

4:44:02 PM

1,799.5000

34

XCSE

Genmab A/S

25/06/2024

4:44:19 PM

1,799.5000

50

XCSE

Genmab A/S

25/06/2024

4:44:20 PM

1,799.5000

34

XCSE

Genmab A/S

25/06/2024

4:44:20 PM

1,799.5000

16

XCSE

Genmab A/S

25/06/2024

4:44:20 PM

1,799.5000

50

XCSE

Genmab A/S

25/06/2024

4:46:24 PM

1,799.0000

185

XCSE

Genmab A/S

25/06/2024

4:46:24 PM

1,799.0000

173

XCSE

Genmab A/S

25/06/2024

4:46:59 PM

1,799.0000

21

XCSE

Genmab A/S

25/06/2024

4:47:03 PM

1,799.0000

18

AQEU

Genmab A/S

25/06/2024

4:47:03 PM

1,799.0000

116

XCSE

Genmab A/S

25/06/2024

4:47:03 PM

1,799.0000

26

XCSE

Genmab A/S

25/06/2024

4:47:03 PM

1,799.0000

5

XCSE

Genmab A/S

25/06/2024

4:47:03 PM

1,799.0000

9

XCSE

Genmab A/S

25/06/2024

4:47:03 PM

1,799.0000

17

XCSE

Genmab A/S

25/06/2024

4:47:03 PM

1,799.0000

9

XCSE

Genmab A/S

25/06/2024

4:47:04 PM

1,799.0000

26

XCSE

Genmab A/S

25/06/2024

4:47:05 PM

1,799.0000

26

XCSE

Genmab A/S

25/06/2024

4:47:06 PM

1,799.0000

26

XCSE

Genmab A/S

25/06/2024

4:47:07 PM

1,799.0000

26

XCSE

Genmab A/S

25/06/2024

4:47:08 PM

1,799.0000

26

XCSE

Genmab A/S

25/06/2024

4:48:17 PM

1,799.5000

40

CEUX

Genmab A/S

25/06/2024

4:48:25 PM

1,799.5000

2

AQEU

Genmab A/S

25/06/2024

4:48:25 PM

1,799.5000

9

AQEU

Genmab A/S

25/06/2024

4:48:25 PM

1,799.5000

28

AQEU

Genmab A/S

25/06/2024

4:48:31 PM

1,799.5000

35

AQEU

Genmab A/S

25/06/2024

4:48:31 PM

1,799.0000

26

XCSE

Genmab A/S

25/06/2024

4:48:31 PM

1,799.0000

29

XCSE

Genmab A/S

25/06/2024

4:48:43 PM

1,799.5000

23

AQEU

Genmab A/S

25/06/2024

4:48:43 PM

1,799.5000

2

AQEU

Genmab A/S

25/06/2024

4:48:43 PM

1,799.5000

10

AQEU

Genmab A/S

25/06/2024

4:48:49 PM

1,799.5000

2

AQEU

Genmab A/S

25/06/2024

4:48:52 PM

1,799.5000

2

AQEU

Genmab A/S

25/06/2024

4:48:55 PM

1,799.5000

80

XCSE

Genmab A/S

25/06/2024

4:49:01 PM

1,799.5000

24

CEUX

Genmab A/S

25/06/2024

4:49:01 PM

1,799.5000

11

TQEX

Genmab A/S

25/06/2024

4:49:08 PM

1,799.5000

29

AQEU

Genmab A/S

25/06/2024

4:49:49 PM

1,799.0000

48

XCSE

Genmab A/S

25/06/2024

4:49:49 PM

1,799.0000

38

XCSE

Genmab A/S

25/06/2024

4:49:49 PM

1,799.0000

38

XCSE

Genmab A/S

25/06/2024

4:49:49 PM

1,799.0000

1

XCSE

Genmab A/S

25/06/2024

4:49:52 PM

1,799.0000

22

XCSE

114

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

4:50:10 PM

1,801.0000

105

XCSE

Genmab A/S

25/06/2024

4:50:10 PM

1,801.0000

75

XCSE

Genmab A/S

25/06/2024

4:50:10 PM

1,801.0000

41

XCSE

Genmab A/S

25/06/2024

4:50:10 PM

1,801.0000

88

XCSE

Genmab A/S

25/06/2024

4:50:10 PM

1,801.0000

51

XCSE

Genmab A/S

25/06/2024

4:50:10 PM

1,801.0000

88

XCSE

Genmab A/S

25/06/2024

4:50:10 PM

1,801.0000

180

XCSE

Genmab A/S

25/06/2024

4:50:10 PM

1,801.0000

2

XCSE

Genmab A/S

25/06/2024

4:51:09 PM

1,802.5000

126

XCSE

Genmab A/S

25/06/2024

4:51:09 PM

1,802.0000

48

XCSE

Genmab A/S

25/06/2024

4:51:09 PM

1,802.0000

42

XCSE

Genmab A/S

25/06/2024

4:51:09 PM

1,802.0000

52

XCSE

Genmab A/S

25/06/2024

4:51:09 PM

1,802.0000

42

XCSE

Genmab A/S

25/06/2024

4:51:09 PM

1,802.0000

11

XCSE

Genmab A/S

25/06/2024

4:51:09 PM

1,802.0000

48

XCSE

Genmab A/S

25/06/2024

4:51:09 PM

1,802.0000

42

XCSE

Genmab A/S

25/06/2024

4:51:09 PM

1,802.0000

52

XCSE

Genmab A/S

25/06/2024

4:51:09 PM

1,802.0000

114

XCSE

Genmab A/S

25/06/2024

4:51:47 PM

1,802.0000

27

XCSE

Genmab A/S

25/06/2024

4:52:25 PM

1,802.0000

126

XCSE

Genmab A/S

25/06/2024

4:52:25 PM

1,802.0000

50

XCSE

Genmab A/S

25/06/2024

4:52:25 PM

1,802.0000

3

XCSE

Genmab A/S

25/06/2024

4:52:25 PM

1,802.0000

12

XCSE

Genmab A/S

25/06/2024

4:52:25 PM

1,802.0000

73

XCSE

Genmab A/S

25/06/2024

4:52:48 PM

1,802.0000

118

XCSE

Genmab A/S

25/06/2024

4:52:48 PM

1,802.0000

7

XCSE

Genmab A/S

25/06/2024

4:52:49 PM

1,802.0000

149

XCSE

Genmab A/S

25/06/2024

4:52:51 PM

1,802.0000

42

XCSE

Genmab A/S

25/06/2024

4:52:51 PM

1,802.0000

45

XCSE

Genmab A/S

25/06/2024

4:52:52 PM

1,802.0000

17

XCSE

Genmab A/S

25/06/2024

4:53:23 PM

1,802.5000

50

XCSE

Genmab A/S

25/06/2024

4:53:23 PM

1,802.5000

50

XCSE

Genmab A/S

25/06/2024

4:53:23 PM

1,802.5000

11

CEUX

Genmab A/S

25/06/2024

4:53:23 PM

1,802.5000

16

CEUX

Genmab A/S

25/06/2024

4:53:23 PM

1,802.5000

5

CEUX

Genmab A/S

25/06/2024

4:53:23 PM

1,802.5000

24

TQEX

Genmab A/S

25/06/2024

4:53:23 PM

1,802.5000

2

TQEX

Genmab A/S

25/06/2024

4:53:23 PM

1,802.5000

18

TQEX

Genmab A/S

25/06/2024

4:53:23 PM

1,802.5000

3

XCSE

Genmab A/S

25/06/2024

4:53:23 PM

1,802.5000

7

XCSE

Genmab A/S

25/06/2024

4:53:23 PM

1,802.5000

38

XCSE

Genmab A/S

25/06/2024

4:53:23 PM

1,802.5000

93

XCSE

Genmab A/S

25/06/2024

4:53:23 PM

1,802.5000

3

XCSE

Genmab A/S

25/06/2024

4:53:23 PM

1,802.5000

22

CEUX

Genmab A/S

25/06/2024

4:53:23 PM

1,802.5000

4

TQEX

Genmab A/S

25/06/2024

4:53:23 PM

1,802.5000

28

TQEX

Genmab A/S

25/06/2024

4:53:23 PM

1,802.5000

24

TQEX

Genmab A/S

25/06/2024

4:53:23 PM

1,802.5000

7

XCSE

115

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

25/06/2024

4:53:23 PM

1,802.5000

61

XCSE

Genmab A/S

25/06/2024

4:53:23 PM

1,802.5000

19

TQEX

Genmab A/S

25/06/2024

4:53:23 PM

1,802.5000

1

TQEX

Genmab A/S

25/06/2024

4:53:23 PM

1,802.5000

21

XCSE

Genmab A/S

25/06/2024

4:53:23 PM

1,802.5000

6

XCSE

Genmab A/S

25/06/2024

4:53:23 PM

1,802.5000

76

XCSE

Genmab A/S

25/06/2024

4:53:23 PM

1,802.5000

28

XCSE

Genmab A/S

25/06/2024

4:53:58 PM

1,803.0000

2

AQEU

Genmab A/S

25/06/2024

4:53:58 PM

1,803.0000

2

AQEU

Genmab A/S

25/06/2024

4:53:58 PM

1,803.0000

11

AQEU

Genmab A/S

26/06/2024

9:01:42 AM

1,793.5000

5

XCSE

Genmab A/S

26/06/2024

9:01:42 AM

1,794.0000

22

XCSE

Genmab A/S

26/06/2024

9:01:42 AM

1,794.0000

106

XCSE

Genmab A/S

26/06/2024

9:01:42 AM

1,794.0000

22

XCSE

Genmab A/S

26/06/2024

9:01:42 AM

1,794.0000

9

XCSE

Genmab A/S

26/06/2024

9:01:42 AM

1,794.0000

20

CEUX

Genmab A/S

26/06/2024

9:01:42 AM

1,794.0000

20

CEUX

Genmab A/S

26/06/2024

9:01:42 AM

1,794.0000

20

CEUX

Genmab A/S

26/06/2024

9:01:42 AM

1,794.0000

1

CEUX

Genmab A/S

26/06/2024

9:01:42 AM

1,794.0000

20

CEUX

Genmab A/S

26/06/2024

9:01:42 AM

1,794.0000

20

CEUX

Genmab A/S

26/06/2024

9:01:42 AM

1,794.0000

20

CEUX

Genmab A/S

26/06/2024

9:01:42 AM

1,794.0000

3

AQEU

Genmab A/S

26/06/2024

9:01:42 AM

1,794.0000

3

AQEU

Genmab A/S

26/06/2024

9:01:42 AM

1,794.0000

7

AQEU

Genmab A/S

26/06/2024

9:01:42 AM

1,794.0000

3

AQEU

Genmab A/S

26/06/2024

9:01:42 AM

1,794.0000

20

CEUX

Genmab A/S

26/06/2024

9:01:42 AM

1,794.0000

3

AQEU

Genmab A/S

26/06/2024

9:01:42 AM

1,794.0000

3

AQEU

Genmab A/S

26/06/2024

9:01:42 AM

1,794.0000

3

AQEU

Genmab A/S

26/06/2024

9:01:42 AM

1,794.0000

3

AQEU

Genmab A/S

26/06/2024

9:01:42 AM

1,794.0000

3

CEUX

Genmab A/S

26/06/2024

9:01:42 AM

1,794.0000

3

AQEU

Genmab A/S

26/06/2024

9:01:42 AM

1,794.0000

3

AQEU

Genmab A/S

26/06/2024

9:01:42 AM

1,793.5000

19

CEUX

Genmab A/S

26/06/2024

9:01:42 AM

1,793.5000

22

CEUX

Genmab A/S

26/06/2024

9:01:42 AM

1,793.5000

3

CEUX

Genmab A/S

26/06/2024

9:01:42 AM

1,793.5000

16

CEUX

Genmab A/S

26/06/2024

9:01:42 AM

1,793.5000

22

CEUX

Genmab A/S

26/06/2024

9:01:42 AM

1,793.5000

3

CEUX

Genmab A/S

26/06/2024

9:01:42 AM

1,793.5000

3

AQEU

Genmab A/S

26/06/2024

9:01:42 AM

1,793.5000

3

AQEU

Genmab A/S

26/06/2024

9:01:42 AM

1,793.5000

3

AQEU

Genmab A/S

26/06/2024

9:01:42 AM

1,793.5000

3

AQEU

Genmab A/S

26/06/2024

9:01:42 AM

1,793.5000

3

AQEU

Genmab A/S

26/06/2024

9:01:42 AM

1,793.5000

3

AQEU

Genmab A/S

26/06/2024

9:01:42 AM

1,793.5000

3

AQEU

Genmab A/S

26/06/2024

9:01:42 AM

1,793.5000

3

AQEU

116

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

9:01:42 AM

1,793.5000

3

AQEU

Genmab A/S

26/06/2024

9:01:42 AM

1,794.0000

10

CEUX

Genmab A/S

26/06/2024

9:01:42 AM

1,793.5000

16

XCSE

Genmab A/S

26/06/2024

9:01:42 AM

1,793.5000

23

XCSE

Genmab A/S

26/06/2024

9:02:02 AM

1,793.0000

22

CEUX

Genmab A/S

26/06/2024

9:02:02 AM

1,793.0000

22

CEUX

Genmab A/S

26/06/2024

9:02:02 AM

1,793.0000

22

CEUX

Genmab A/S

26/06/2024

9:02:02 AM

1,793.0000

22

CEUX

Genmab A/S

26/06/2024

9:02:02 AM

1,793.0000

5

CEUX

Genmab A/S

26/06/2024

9:02:02 AM

1,793.0000

4

AQEU

Genmab A/S

26/06/2024

9:02:02 AM

1,793.0000

4

AQEU

Genmab A/S

26/06/2024

9:02:02 AM

1,793.0000

4

AQEU

Genmab A/S

26/06/2024

9:02:02 AM

1,793.0000

4

AQEU

Genmab A/S

26/06/2024

9:02:02 AM

1,793.0000

4

AQEU

Genmab A/S

26/06/2024

9:02:02 AM

1,793.0000

4

AQEU

Genmab A/S

26/06/2024

9:02:02 AM

1,793.0000

4

AQEU

Genmab A/S

26/06/2024

9:02:02 AM

1,793.0000

4

AQEU

Genmab A/S

26/06/2024

9:02:02 AM

1,793.0000

4

AQEU

Genmab A/S

26/06/2024

9:02:02 AM

1,793.0000

4

AQEU

Genmab A/S

26/06/2024

9:02:02 AM

1,793.0000

4

AQEU

Genmab A/S

26/06/2024

9:02:02 AM

1,793.0000

7

XCSE

Genmab A/S

26/06/2024

9:02:02 AM

1,793.0000

24

XCSE

Genmab A/S

26/06/2024

9:02:02 AM

1,793.0000

5

XCSE

Genmab A/S

26/06/2024

9:02:02 AM

1,793.0000

24

XCSE

Genmab A/S

26/06/2024

9:02:02 AM

1,793.0000

24

XCSE

Genmab A/S

26/06/2024

9:02:02 AM

1,793.0000

17

XCSE

Genmab A/S

26/06/2024

9:02:48 AM

1,791.5000

51

XCSE

Genmab A/S

26/06/2024

9:02:48 AM

1,791.5000

2

XCSE

Genmab A/S

26/06/2024

9:02:48 AM

1,791.5000

2

XCSE

Genmab A/S

26/06/2024

9:02:48 AM

1,791.5000

53

XCSE

Genmab A/S

26/06/2024

9:02:48 AM

1,791.5000

64

XCSE

Genmab A/S

26/06/2024

9:04:18 AM

1,796.5000

1

TQEX

Genmab A/S

26/06/2024

9:04:26 AM

1,798.0000

24

XCSE

Genmab A/S

26/06/2024

9:04:26 AM

1,798.0000

19

XCSE

Genmab A/S

26/06/2024

9:04:26 AM

1,798.0000

5

XCSE

Genmab A/S

26/06/2024

9:04:26 AM

1,798.0000

14

XCSE

Genmab A/S

26/06/2024

9:04:26 AM

1,798.0000

24

XCSE

Genmab A/S

26/06/2024

9:04:26 AM

1,798.0000

5

XCSE

Genmab A/S

26/06/2024

9:04:26 AM

1,798.0000

19

XCSE

Genmab A/S

26/06/2024

9:04:26 AM

1,798.0000

24

XCSE

Genmab A/S

26/06/2024

9:04:26 AM

1,798.0000

24

XCSE

Genmab A/S

26/06/2024

9:04:26 AM

1,798.0000

18

XCSE

Genmab A/S

26/06/2024

9:05:44 AM

1,797.0000

11

CEUX

Genmab A/S

26/06/2024

9:05:44 AM

1,797.0000

11

CEUX

Genmab A/S

26/06/2024

9:05:44 AM

1,797.0000

11

CEUX

Genmab A/S

26/06/2024

9:05:44 AM

1,797.0000

11

CEUX

Genmab A/S

26/06/2024

9:05:44 AM

1,797.0000

5

TQEX

Genmab A/S

26/06/2024

9:05:44 AM

1,797.0000

5

TQEX

117

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

9:05:44 AM

1,797.0000

10

XCSE

Genmab A/S

26/06/2024

9:05:44 AM

1,797.0000

10

XCSE

Genmab A/S

26/06/2024

9:05:44 AM

1,797.0000

5

TQEX

Genmab A/S

26/06/2024

9:05:44 AM

1,797.0000

2

CEUX

Genmab A/S

26/06/2024

9:05:44 AM

1,797.0000

5

TQEX

Genmab A/S

26/06/2024

9:05:44 AM

1,797.0000

8

XCSE

Genmab A/S

26/06/2024

9:05:44 AM

1,797.0000

19

XCSE

Genmab A/S

26/06/2024

9:05:44 AM

1,797.0000

27

XCSE

Genmab A/S

26/06/2024

9:05:44 AM

1,797.0000

27

XCSE

Genmab A/S

26/06/2024

9:05:44 AM

1,797.0000

18

XCSE

Genmab A/S

26/06/2024

9:06:51 AM

1,798.5000

30

XCSE

Genmab A/S

26/06/2024

9:06:51 AM

1,798.5000

50

XCSE

Genmab A/S

26/06/2024

9:06:51 AM

1,798.5000

13

XCSE

Genmab A/S

26/06/2024

9:07:07 AM

1,799.0000

5

TQEX

Genmab A/S

26/06/2024

9:07:09 AM

1,799.0000

16

CEUX

Genmab A/S

26/06/2024

9:07:09 AM

1,799.0000

16

CEUX

Genmab A/S

26/06/2024

9:07:09 AM

1,799.0000

2

AQEU

Genmab A/S

26/06/2024

9:07:09 AM

1,799.0000

5

TQEX

Genmab A/S

26/06/2024

9:07:09 AM

1,799.0000

16

CEUX

Genmab A/S

26/06/2024

9:07:09 AM

1,799.0000

16

CEUX

Genmab A/S

26/06/2024

9:07:09 AM

1,799.0000

16

CEUX

Genmab A/S

26/06/2024

9:07:09 AM

1,799.0000

16

CEUX

Genmab A/S

26/06/2024

9:07:09 AM

1,799.0000

2

AQEU

Genmab A/S

26/06/2024

9:07:09 AM

1,799.0000

2

AQEU

Genmab A/S

26/06/2024

9:07:09 AM

1,799.0000

2

AQEU

Genmab A/S

26/06/2024

9:07:09 AM

1,799.0000

5

TQEX

Genmab A/S

26/06/2024

9:07:09 AM

1,799.0000

5

TQEX

Genmab A/S

26/06/2024

9:07:09 AM

1,799.0000

16

CEUX

Genmab A/S

26/06/2024

9:07:09 AM

1,799.0000

16

CEUX

Genmab A/S

26/06/2024

9:07:09 AM

1,799.0000

3

CEUX

Genmab A/S

26/06/2024

9:07:09 AM

1,799.0000

2

AQEU

Genmab A/S

26/06/2024

9:07:09 AM

1,799.0000

2

AQEU

Genmab A/S

26/06/2024

9:07:09 AM

1,799.0000

2

AQEU

Genmab A/S

26/06/2024

9:07:09 AM

1,799.0000

2

AQEU

Genmab A/S

26/06/2024

9:07:09 AM

1,799.0000

2

AQEU

Genmab A/S

26/06/2024

9:07:09 AM

1,799.0000

5

TQEX

Genmab A/S

26/06/2024

9:07:09 AM

1,799.0000

5

TQEX

Genmab A/S

26/06/2024

9:07:09 AM

1,799.0000

5

TQEX

Genmab A/S

26/06/2024

9:07:09 AM

1,799.0000

5

TQEX

Genmab A/S

26/06/2024

9:07:09 AM

1,799.0000

23

TQEX

Genmab A/S

26/06/2024

9:07:09 AM

1,799.0000

9

TQEX

Genmab A/S

26/06/2024

9:08:35 AM

1,803.0000

10

CEUX

Genmab A/S

26/06/2024

9:08:35 AM

1,803.0000

11

XCSE

Genmab A/S

26/06/2024

9:08:35 AM

1,803.0000

50

XCSE

Genmab A/S

26/06/2024

9:08:35 AM

1,803.0000

35

XCSE

Genmab A/S

26/06/2024

9:08:35 AM

1,803.0000

11

XCSE

Genmab A/S

26/06/2024

9:08:35 AM

1,803.0000

11

XCSE

Genmab A/S

26/06/2024

9:08:35 AM

1,803.0000

11

XCSE

118

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

9:08:35 AM

1,803.0000

74

XCSE

Genmab A/S

26/06/2024

9:08:35 AM

1,803.0000

10

CEUX

Genmab A/S

26/06/2024

9:08:35 AM

1,803.0000

10

CEUX

Genmab A/S

26/06/2024

9:08:35 AM

1,803.0000

10

CEUX

Genmab A/S

26/06/2024

9:08:35 AM

1,803.0000

10

CEUX

Genmab A/S

26/06/2024

9:08:35 AM

1,803.0000

10

CEUX

Genmab A/S

26/06/2024

9:08:35 AM

1,803.0000

10

CEUX

Genmab A/S

26/06/2024

9:08:35 AM

1,803.0000

1

CEUX

Genmab A/S

26/06/2024

9:08:35 AM

1,803.0000

6

CEUX

Genmab A/S

26/06/2024

9:08:35 AM

1,803.0000

4

CEUX

Genmab A/S

26/06/2024

9:08:35 AM

1,803.0000

11

XCSE

Genmab A/S

26/06/2024

9:08:35 AM

1,803.0000

10

CEUX

Genmab A/S

26/06/2024

9:08:35 AM

1,803.0000

10

CEUX

Genmab A/S

26/06/2024

9:08:35 AM

1,803.0000

11

XCSE

Genmab A/S

26/06/2024

9:08:35 AM

1,803.0000

5

XCSE

Genmab A/S

26/06/2024

9:08:35 AM

1,803.0000

10

CEUX

Genmab A/S

26/06/2024

9:09:19 AM

1,804.0000

8

XCSE

Genmab A/S

26/06/2024

9:09:19 AM

1,804.0000

12

CEUX

Genmab A/S

26/06/2024

9:09:19 AM

1,804.0000

12

CEUX

Genmab A/S

26/06/2024

9:09:19 AM

1,804.0000

12

CEUX

Genmab A/S

26/06/2024

9:09:19 AM

1,804.0000

12

CEUX

Genmab A/S

26/06/2024

9:09:19 AM

1,804.0000

12

CEUX

Genmab A/S

26/06/2024

9:09:19 AM

1,804.0000

12

CEUX

Genmab A/S

26/06/2024

9:09:19 AM

1,804.0000

12

CEUX

Genmab A/S

26/06/2024

9:09:19 AM

1,804.0000

12

CEUX

Genmab A/S

26/06/2024

9:09:19 AM

1,804.0000

6

CEUX

Genmab A/S

26/06/2024

9:09:19 AM

1,804.0000

4

XCSE

Genmab A/S

26/06/2024

9:09:19 AM

1,804.0000

12

XCSE

Genmab A/S

26/06/2024

9:09:19 AM

1,804.0000

12

XCSE

Genmab A/S

26/06/2024

9:09:19 AM

1,804.0000

12

XCSE

Genmab A/S

26/06/2024

9:09:19 AM

1,804.0000

12

XCSE

Genmab A/S

26/06/2024

9:09:19 AM

1,804.0000

12

XCSE

Genmab A/S

26/06/2024

9:09:19 AM

1,804.0000

12

XCSE

Genmab A/S

26/06/2024

9:09:19 AM

1,804.0000

12

XCSE

Genmab A/S

26/06/2024

9:09:19 AM

1,804.0000

12

XCSE

Genmab A/S

26/06/2024

9:09:19 AM

1,804.0000

4

XCSE

Genmab A/S

26/06/2024

9:09:19 AM

1,803.0000

20

CEUX

Genmab A/S

26/06/2024

9:09:19 AM

1,803.0000

20

CEUX

Genmab A/S

26/06/2024

9:09:19 AM

1,803.0000

3

AQEU

Genmab A/S

26/06/2024

9:09:19 AM

1,803.0000

5

TQEX

Genmab A/S

26/06/2024

9:09:19 AM

1,803.0000

6

CEUX

Genmab A/S

26/06/2024

9:09:19 AM

1,803.0000

3

AQEU

Genmab A/S

26/06/2024

9:09:19 AM

1,803.0000

42

XCSE

Genmab A/S

26/06/2024

9:09:19 AM

1,803.0000

16

XCSE

Genmab A/S

26/06/2024

9:09:19 AM

1,803.0000

6

XCSE

Genmab A/S

26/06/2024

9:09:19 AM

1,803.0000

42

XCSE

Genmab A/S

26/06/2024

9:09:19 AM

1,803.0000

16

XCSE

Genmab A/S

26/06/2024

9:09:19 AM

1,803.0000

5

TQEX

119

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

9:09:19 AM

1,803.0000

25

TQEX

Genmab A/S

26/06/2024

9:09:19 AM

1,803.0000

22

XCSE

Genmab A/S

26/06/2024

9:09:19 AM

1,803.0000

13

XCSE

Genmab A/S

26/06/2024

9:09:19 AM

1,803.0000

14

XCSE

Genmab A/S

26/06/2024

9:09:19 AM

1,803.0000

6

XCSE

Genmab A/S

26/06/2024

9:09:19 AM

1,803.0000

49

CEUX

Genmab A/S

26/06/2024

9:11:49 AM

1,804.0000

21

XCSE

Genmab A/S

26/06/2024

9:13:01 AM

1,805.0000

2

CEUX

Genmab A/S

26/06/2024

9:13:01 AM

1,805.0000

35

CEUX

Genmab A/S

26/06/2024

9:13:27 AM

1,805.0000

30

XCSE

Genmab A/S

26/06/2024

9:13:27 AM

1,805.0000

9

XCSE

Genmab A/S

26/06/2024

9:13:27 AM

1,805.0000

38

XCSE

Genmab A/S

26/06/2024

9:13:27 AM

1,805.0000

37

XCSE

Genmab A/S

26/06/2024

9:13:27 AM

1,805.0000

38

XCSE

Genmab A/S

26/06/2024

9:13:27 AM

1,805.0000

34

CEUX

Genmab A/S

26/06/2024

9:13:27 AM

1,805.0000

34

CEUX

Genmab A/S

26/06/2024

9:13:27 AM

1,805.0000

16

CEUX

Genmab A/S

26/06/2024

9:13:27 AM

1,805.0000

31

CEUX

Genmab A/S

26/06/2024

9:13:27 AM

1,805.0000

38

XCSE

Genmab A/S

26/06/2024

9:13:27 AM

1,805.0000

5

AQEU

Genmab A/S

26/06/2024

9:13:27 AM

1,805.0000

52

XCSE

Genmab A/S

26/06/2024

9:14:19 AM

1,807.5000

22

XCSE

Genmab A/S

26/06/2024

9:14:19 AM

1,807.5000

103

XCSE

Genmab A/S

26/06/2024

9:18:23 AM

1,810.0000

21

XCSE

Genmab A/S

26/06/2024

9:18:23 AM

1,810.0000

51

XCSE

Genmab A/S

26/06/2024

9:18:23 AM

1,810.0000

17

XCSE

Genmab A/S

26/06/2024

9:18:23 AM

1,810.0000

13

CEUX

Genmab A/S

26/06/2024

9:18:23 AM

1,810.0000

22

CEUX

Genmab A/S

26/06/2024

9:18:23 AM

1,810.0000

20

CEUX

Genmab A/S

26/06/2024

9:18:23 AM

1,810.0000

17

CEUX

Genmab A/S

26/06/2024

9:18:23 AM

1,810.0000

5

TQEX

Genmab A/S

26/06/2024

9:18:23 AM

1,810.0000

5

TQEX

Genmab A/S

26/06/2024

9:22:55 AM

1,812.0000

31

XCSE

Genmab A/S

26/06/2024

9:22:55 AM

1,812.0000

8

XCSE

Genmab A/S

26/06/2024

9:22:55 AM

1,812.0000

63

XCSE

Genmab A/S

26/06/2024

9:22:55 AM

1,812.0000

43

XCSE

Genmab A/S

26/06/2024

9:22:55 AM

1,812.0000

29

CEUX

Genmab A/S

26/06/2024

9:22:55 AM

1,812.0000

29

CEUX

Genmab A/S

26/06/2024

9:22:55 AM

1,812.0000

26

CEUX

Genmab A/S

26/06/2024

9:22:55 AM

1,812.0000

29

CEUX

Genmab A/S

26/06/2024

9:22:55 AM

1,812.0000

19

CEUX

Genmab A/S

26/06/2024

9:22:55 AM

1,812.0000

4

AQEU

Genmab A/S

26/06/2024

9:22:55 AM

1,812.0000

34

AQEU

Genmab A/S

26/06/2024

9:22:55 AM

1,812.0000

4

AQEU

Genmab A/S

26/06/2024

9:22:55 AM

1,812.0000

2

AQEU

Genmab A/S

26/06/2024

9:22:55 AM

1,812.0000

5

TQEX

Genmab A/S

26/06/2024

9:22:55 AM

1,812.0000

5

TQEX

Genmab A/S

26/06/2024

9:22:55 AM

1,812.0000

5

TQEX

120

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

9:22:55 AM

1,812.0000

5

TQEX

Genmab A/S

26/06/2024

9:22:55 AM

1,812.0000

5

TQEX

Genmab A/S

26/06/2024

9:22:55 AM

1,812.0000

5

TQEX

Genmab A/S

26/06/2024

9:22:55 AM

1,812.0000

5

TQEX

Genmab A/S

26/06/2024

9:22:55 AM

1,812.0000

5

TQEX

Genmab A/S

26/06/2024

9:22:55 AM

1,812.0000

5

TQEX

Genmab A/S

26/06/2024

9:22:55 AM

1,812.0000

1

TQEX

Genmab A/S

26/06/2024

9:22:55 AM

1,811.5000

3

CEUX

Genmab A/S

26/06/2024

9:22:55 AM

1,811.5000

66

CEUX

Genmab A/S

26/06/2024

9:22:55 AM

1,811.5000

9

AQEU

Genmab A/S

26/06/2024

9:22:55 AM

1,811.5000

2

AQEU

Genmab A/S

26/06/2024

9:22:55 AM

1,811.5000

1

AQEU

Genmab A/S

26/06/2024

9:22:55 AM

1,811.5000

16

AQEU

Genmab A/S

26/06/2024

9:22:55 AM

1,811.5000

9

TQEX

Genmab A/S

26/06/2024

9:22:55 AM

1,811.5000

2

TQEX

Genmab A/S

26/06/2024

9:22:55 AM

1,811.5000

16

TQEX

Genmab A/S

26/06/2024

9:22:55 AM

1,811.5000

2

TQEX

Genmab A/S

26/06/2024

9:22:55 AM

1,811.5000

14

XCSE

Genmab A/S

26/06/2024

9:22:55 AM

1,811.5000

39

XCSE

Genmab A/S

26/06/2024

9:22:55 AM

1,811.5000

30

XCSE

Genmab A/S

26/06/2024

9:22:55 AM

1,811.5000

8

XCSE

Genmab A/S

26/06/2024

9:22:55 AM

1,811.5000

7

XCSE

Genmab A/S

26/06/2024

9:22:55 AM

1,811.5000

2

AQEU

Genmab A/S

26/06/2024

9:22:55 AM

1,811.5000

1

AQEU

Genmab A/S

26/06/2024

9:22:55 AM

1,811.5000

9

AQEU

Genmab A/S

26/06/2024

9:22:55 AM

1,811.5000

1

TQEX

Genmab A/S

26/06/2024

9:22:55 AM

1,811.5000

9

TQEX

Genmab A/S

26/06/2024

9:22:55 AM

1,811.5000

1

TQEX

Genmab A/S

26/06/2024

9:22:55 AM

1,811.5000

3

AQEU

Genmab A/S

26/06/2024

9:23:07 AM

1,809.0000

17

XCSE

Genmab A/S

26/06/2024

9:23:07 AM

1,809.0000

17

XCSE

Genmab A/S

26/06/2024

9:23:07 AM

1,809.0000

10

XCSE

Genmab A/S

26/06/2024

9:23:07 AM

1,809.0000

18

CEUX

Genmab A/S

26/06/2024

9:23:07 AM

1,809.0000

5

TQEX

Genmab A/S

26/06/2024

9:23:07 AM

1,809.0000

18

CEUX

Genmab A/S

26/06/2024

9:30:55 AM

1,815.0000

33

XCSE

Genmab A/S

26/06/2024

9:30:55 AM

1,815.0000

31

CEUX

Genmab A/S

26/06/2024

9:30:55 AM

1,815.0000

31

CEUX

Genmab A/S

26/06/2024

9:30:55 AM

1,815.0000

31

CEUX

Genmab A/S

26/06/2024

9:30:55 AM

1,815.0000

4

CEUX

Genmab A/S

26/06/2024

9:30:55 AM

1,815.0000

31

CEUX

Genmab A/S

26/06/2024

9:30:55 AM

1,815.0000

31

CEUX

Genmab A/S

26/06/2024

9:30:55 AM

1,815.0000

4

CEUX

Genmab A/S

26/06/2024

9:30:55 AM

1,815.0000

29

CEUX

Genmab A/S

26/06/2024

9:30:55 AM

1,815.0000

2

AQEU

Genmab A/S

26/06/2024

9:30:55 AM

1,815.0000

3

AQEU

Genmab A/S

26/06/2024

9:30:55 AM

1,815.0000

3

AQEU

Genmab A/S

26/06/2024

9:30:55 AM

1,815.0000

5

TQEX

121

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

9:30:55 AM

1,815.0000

5

TQEX

Genmab A/S

26/06/2024

9:30:55 AM

1,815.0000

5

TQEX

Genmab A/S

26/06/2024

9:30:55 AM

1,815.0000

5

TQEX

Genmab A/S

26/06/2024

9:30:55 AM

1,815.0000

5

TQEX

Genmab A/S

26/06/2024

9:30:55 AM

1,815.0000

5

TQEX

Genmab A/S

26/06/2024

9:30:55 AM

1,815.0000

33

XCSE

Genmab A/S

26/06/2024

9:30:55 AM

1,815.0000

33

XCSE

Genmab A/S

26/06/2024

9:30:55 AM

1,815.0000

5

TQEX

Genmab A/S

26/06/2024

9:30:55 AM

1,815.0000

2

CEUX

Genmab A/S

26/06/2024

9:30:55 AM

1,815.0000

2

AQEU

Genmab A/S

26/06/2024

9:30:55 AM

1,815.0000

5

TQEX

Genmab A/S

26/06/2024

9:30:55 AM

1,815.0000

33

XCSE

Genmab A/S

26/06/2024

9:30:55 AM

1,815.0000

33

XCSE

Genmab A/S

26/06/2024

9:30:55 AM

1,815.0000

33

XCSE

Genmab A/S

26/06/2024

9:30:55 AM

1,815.0000

33

XCSE

Genmab A/S

26/06/2024

9:30:55 AM

1,815.0000

33

XCSE

Genmab A/S

26/06/2024

9:30:55 AM

1,815.0000

1

XCSE

Genmab A/S

26/06/2024

9:30:55 AM

1,815.0000

25

XCSE

Genmab A/S

26/06/2024

9:30:56 AM

1,815.0000

31

CEUX

Genmab A/S

26/06/2024

9:30:56 AM

1,815.0000

31

CEUX

Genmab A/S

26/06/2024

9:30:56 AM

1,815.0000

5

TQEX

Genmab A/S

26/06/2024

9:30:56 AM

1,815.0000

18

TQEX

Genmab A/S

26/06/2024

9:30:56 AM

1,815.0000

41

XCSE

Genmab A/S

26/06/2024

9:30:57 AM

1,815.0000

12

CEUX

Genmab A/S

26/06/2024

9:30:57 AM

1,815.0000

101

CEUX

Genmab A/S

26/06/2024

9:30:57 AM

1,815.0000

16

AQEU

Genmab A/S

26/06/2024

9:30:57 AM

1,815.0000

126

XCSE

Genmab A/S

26/06/2024

9:30:58 AM

1,813.5000

20

XCSE

Genmab A/S

26/06/2024

9:30:58 AM

1,813.5000

19

CEUX

Genmab A/S

26/06/2024

9:31:50 AM

1,812.5000

19

XCSE

Genmab A/S

26/06/2024

9:31:50 AM

1,812.5000

19

XCSE

Genmab A/S

26/06/2024

9:31:50 AM

1,812.5000

9

XCSE

Genmab A/S

26/06/2024

9:31:50 AM

1,812.5000

19

CEUX

Genmab A/S

26/06/2024

9:31:50 AM

1,812.5000

19

CEUX

Genmab A/S

26/06/2024

9:31:50 AM

1,812.5000

6

CEUX

Genmab A/S

26/06/2024

9:31:50 AM

1,812.5000

3

AQEU

Genmab A/S

26/06/2024

9:31:50 AM

1,812.5000

5

TQEX

Genmab A/S

26/06/2024

9:31:50 AM

1,812.5000

5

TQEX

Genmab A/S

26/06/2024

9:31:50 AM

1,812.5000

36

CEUX

Genmab A/S

26/06/2024

9:31:50 AM

1,812.0000

17

XCSE

Genmab A/S

26/06/2024

9:31:50 AM

1,812.0000

18

XCSE

Genmab A/S

26/06/2024

9:31:50 AM

1,812.0000

5

XCSE

Genmab A/S

26/06/2024

9:31:50 AM

1,812.0000

12

XCSE

Genmab A/S

26/06/2024

9:31:50 AM

1,812.0000

18

XCSE

Genmab A/S

26/06/2024

9:31:50 AM

1,812.0000

13

XCSE

Genmab A/S

26/06/2024

9:31:50 AM

1,812.0000

18

XCSE

Genmab A/S

26/06/2024

9:31:50 AM

1,812.0000

14

XCSE

Genmab A/S

26/06/2024

9:31:50 AM

1,812.0000

18

CEUX

122

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

9:31:50 AM

1,812.0000

17

CEUX

Genmab A/S

26/06/2024

9:31:50 AM

1,812.0000

17

CEUX

Genmab A/S

26/06/2024

9:31:50 AM

1,812.0000

5

TQEX

Genmab A/S

26/06/2024

9:31:50 AM

1,812.0000

5

TQEX

Genmab A/S

26/06/2024

9:31:50 AM

1,812.0000

1

CEUX

Genmab A/S

26/06/2024

9:31:50 AM

1,812.0000

17

CEUX

Genmab A/S

26/06/2024

9:31:50 AM

1,812.0000

8

CEUX

Genmab A/S

26/06/2024

9:31:50 AM

1,812.0000

12

CEUX

Genmab A/S

26/06/2024

9:31:50 AM

1,812.0000

3

AQEU

Genmab A/S

26/06/2024

9:31:50 AM

1,812.0000

2

AQEU

Genmab A/S

26/06/2024

9:31:50 AM

1,812.0000

4

TQEX

Genmab A/S

26/06/2024

9:31:50 AM

1,812.0000

5

CEUX

Genmab A/S

26/06/2024

9:31:50 AM

1,812.0000

13

CEUX

Genmab A/S

26/06/2024

9:31:50 AM

1,812.0000

5

TQEX

Genmab A/S

26/06/2024

9:31:51 AM

1,812.0000

4

XCSE

Genmab A/S

26/06/2024

9:31:51 AM

1,812.0000

37

XCSE

Genmab A/S

26/06/2024

9:37:45 AM

1,813.5000

10

CEUX

Genmab A/S

26/06/2024

9:37:45 AM

1,813.5000

5

TQEX

Genmab A/S

26/06/2024

9:37:45 AM

1,813.5000

10

XCSE

Genmab A/S

26/06/2024

9:37:45 AM

1,813.5000

10

CEUX

Genmab A/S

26/06/2024

9:37:45 AM

1,813.5000

5

TQEX

Genmab A/S

26/06/2024

9:37:45 AM

1,813.5000

5

TQEX

Genmab A/S

26/06/2024

9:37:45 AM

1,813.5000

10

XCSE

Genmab A/S

26/06/2024

9:40:39 AM

1,815.0000

20

CEUX

Genmab A/S

26/06/2024

9:40:39 AM

1,815.0000

2

CEUX

Genmab A/S

26/06/2024

9:40:39 AM

1,815.0000

18

CEUX

Genmab A/S

26/06/2024

9:40:39 AM

1,815.0000

2

CEUX

Genmab A/S

26/06/2024

9:40:39 AM

1,815.0000

12

CEUX

Genmab A/S

26/06/2024

9:40:39 AM

1,815.0000

5

TQEX

Genmab A/S

26/06/2024

9:40:39 AM

1,815.0000

21

XCSE

Genmab A/S

26/06/2024

9:40:39 AM

1,815.0000

21

XCSE

Genmab A/S

26/06/2024

9:40:39 AM

1,815.0000

16

XCSE

Genmab A/S

26/06/2024

9:40:39 AM

1,815.0000

25

CEUX

Genmab A/S

26/06/2024

9:40:39 AM

1,815.0000

15

TQEX

Genmab A/S

26/06/2024

9:42:57 AM

1,817.0000

11

XCSE

Genmab A/S

26/06/2024

9:42:57 AM

1,817.0000

6

XCSE

Genmab A/S

26/06/2024

9:42:57 AM

1,817.0000

11

XCSE

Genmab A/S

26/06/2024

9:42:57 AM

1,817.0000

15

XCSE

Genmab A/S

26/06/2024

9:42:57 AM

1,817.0000

11

XCSE

Genmab A/S

26/06/2024

9:42:57 AM

1,817.0000

21

XCSE

Genmab A/S

26/06/2024

9:42:57 AM

1,817.0000

10

CEUX

Genmab A/S

26/06/2024

9:42:57 AM

1,817.0000

10

CEUX

Genmab A/S

26/06/2024

9:42:57 AM

1,817.0000

10

CEUX

Genmab A/S

26/06/2024

9:42:57 AM

1,817.0000

10

CEUX

Genmab A/S

26/06/2024

9:42:57 AM

1,817.0000

2

CEUX

Genmab A/S

26/06/2024

9:42:57 AM

1,817.0000

10

CEUX

Genmab A/S

26/06/2024

9:42:57 AM

1,817.0000

11

XCSE

Genmab A/S

26/06/2024

9:43:01 AM

1,816.5000

47

CEUX

123

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

9:43:01 AM

1,816.5000

7

TQEX

Genmab A/S

26/06/2024

9:43:01 AM

1,816.5000

52

XCSE

Genmab A/S

26/06/2024

9:43:01 AM

1,816.5000

52

XCSE

Genmab A/S

26/06/2024

9:43:01 AM

1,816.5000

52

XCSE

Genmab A/S

26/06/2024

9:43:01 AM

1,816.5000

9

CEUX

Genmab A/S

26/06/2024

9:43:01 AM

1,816.5000

7

TQEX

Genmab A/S

26/06/2024

9:43:01 AM

1,816.5000

7

TQEX

Genmab A/S

26/06/2024

9:44:56 AM

1,817.5000

8

TQEX

Genmab A/S

26/06/2024

9:44:56 AM

1,817.5000

15

TQEX

Genmab A/S

26/06/2024

9:44:56 AM

1,817.5000

8

XCSE

Genmab A/S

26/06/2024

9:44:56 AM

1,817.5000

7

XCSE

Genmab A/S

26/06/2024

9:45:14 AM

1,817.5000

9

TQEX

Genmab A/S

26/06/2024

9:45:14 AM

1,817.5000

16

XCSE

Genmab A/S

26/06/2024

9:45:14 AM

1,817.5000

13

XCSE

Genmab A/S

26/06/2024

9:45:31 AM

1,817.5000

16

XCSE

Genmab A/S

26/06/2024

9:45:31 AM

1,817.5000

21

XCSE

Genmab A/S

26/06/2024

9:45:50 AM

1,817.5000

9

TQEX

Genmab A/S

26/06/2024

9:45:50 AM

1,817.5000

18

XCSE

Genmab A/S

26/06/2024

9:45:50 AM

1,817.5000

8

XCSE

Genmab A/S

26/06/2024

9:45:50 AM

1,817.5000

6

XCSE

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

10

CEUX

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

12

CEUX

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

22

CEUX

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

22

CEUX

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

6

CEUX

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

3

AQEU

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

3

AQEU

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

3

AQEU

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

3

AQEU

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

3

AQEU

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

22

CEUX

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

22

CEUX

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

6

CEUX

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

22

CEUX

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

7

CEUX

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

2

AQEU

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

1

AQEU

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

1

AQEU

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

3

AQEU

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

3

AQEU

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

3

AQEU

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

3

AQEU

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

2

AQEU

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

3

AQEU

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

5

TQEX

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

5

TQEX

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

2

TQEX

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

5

TQEX

124

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

2

TQEX

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

5

TQEX

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

2

TQEX

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

5

TQEX

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

5

TQEX

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

5

TQEX

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

17

CEUX

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

20

CEUX

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

13

CEUX

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

4

CEUX

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

17

CEUX

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

5

CEUX

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

15

CEUX

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

17

CEUX

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

17

CEUX

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

4

CEUX

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

1

CEUX

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

2

AQEU

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

2

AQEU

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

2

AQEU

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

2

AQEU

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

2

AQEU

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

2

AQEU

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

2

AQEU

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

2

AQEU

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

2

AQEU

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

2

AQEU

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

2

AQEU

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

2

AQEU

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

5

TQEX

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

5

TQEX

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

5

TQEX

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

5

TQEX

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

5

TQEX

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

5

TQEX

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

5

TQEX

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

5

TQEX

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

5

TQEX

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

3

AQEU

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

3

AQEU

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

2

AQEU

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

5

TQEX

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

17

CEUX

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

14

CEUX

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

2

CEUX

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

11

CEUX

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

23

XCSE

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

23

XCSE

125

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

23

XCSE

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

23

XCSE

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

23

XCSE

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

30

XCSE

Genmab A/S

26/06/2024

9:46:00 AM

1,816.0000

21

XCSE

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

36

CEUX

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

8

CEUX

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

8

CEUX

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

2

CEUX

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

3

AQEU

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

3

AQEU

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

18

XCSE

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

7

XCSE

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

14

XCSE

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

17

XCSE

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

18

XCSE

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

21

XCSE

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

21

XCSE

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

16

XCSE

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

1

XCSE

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

14

XCSE

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

3

XCSE

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

1

XCSE

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

17

XCSE

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

17

XCSE

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

1

XCSE

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

2

XCSE

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

36

CEUX

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

48

CEUX

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

19

CEUX

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

20

XCSE

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

10

XCSE

Genmab A/S

26/06/2024

9:46:00 AM

1,815.5000

8

XCSE

Genmab A/S

26/06/2024

9:52:34 AM

1,814.0000

17

CEUX

Genmab A/S

26/06/2024

9:52:34 AM

1,814.0000

44

CEUX

Genmab A/S

26/06/2024

9:52:34 AM

1,814.0000

61

CEUX

Genmab A/S

26/06/2024

9:52:34 AM

1,814.0000

33

CEUX

Genmab A/S

26/06/2024

9:52:34 AM

1,814.0000

9

AQEU

Genmab A/S

26/06/2024

9:52:34 AM

1,814.0000

6

AQEU

Genmab A/S

26/06/2024

9:52:34 AM

1,814.0000

3

AQEU

Genmab A/S

26/06/2024

9:52:34 AM

1,814.0000

9

AQEU

Genmab A/S

26/06/2024

9:52:34 AM

1,814.0000

9

AQEU

Genmab A/S

26/06/2024

9:52:34 AM

1,814.0000

10

TQEX

Genmab A/S

26/06/2024

9:52:34 AM

1,814.0000

10

TQEX

Genmab A/S

26/06/2024

9:52:34 AM

1,814.0000

26

TQEX

Genmab A/S

26/06/2024

9:52:34 AM

1,814.0000

53

XCSE

Genmab A/S

26/06/2024

9:52:34 AM

1,814.0000

16

XCSE

Genmab A/S

26/06/2024

9:52:34 AM

1,814.0000

16

XCSE

126

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

9:52:34 AM

1,814.0000

2

XCSE

Genmab A/S

26/06/2024

9:52:34 AM

1,814.0000

2

XCSE

Genmab A/S

26/06/2024

9:52:34 AM

1,814.0000

3

XCSE

Genmab A/S

26/06/2024

9:52:34 AM

1,814.0000

1

XCSE

Genmab A/S

26/06/2024

9:52:34 AM

1,814.0000

4

XCSE

Genmab A/S

26/06/2024

9:52:34 AM

1,814.0000

5

XCSE

Genmab A/S

26/06/2024

9:52:34 AM

1,814.0000

6

XCSE

Genmab A/S

26/06/2024

9:52:34 AM

1,814.0000

10

CEUX

Genmab A/S

26/06/2024

9:52:34 AM

1,814.0000

19

CEUX

Genmab A/S

26/06/2024

9:52:34 AM

1,814.0000

4

CEUX

Genmab A/S

26/06/2024

9:52:34 AM

1,814.0000

39

CEUX

Genmab A/S

26/06/2024

9:52:34 AM

1,814.0000

6

AQEU

Genmab A/S

26/06/2024

9:52:34 AM

1,813.5000

22

XCSE

Genmab A/S

26/06/2024

9:52:34 AM

1,814.0000

48

XCSE

Genmab A/S

26/06/2024

9:52:34 AM

1,814.0000

6

AQEU

Genmab A/S

26/06/2024

9:52:34 AM

1,814.0000

1

AQEU

Genmab A/S

26/06/2024

9:52:35 AM

1,813.5000

22

XCSE

Genmab A/S

26/06/2024

9:52:35 AM

1,813.5000

22

XCSE

Genmab A/S

26/06/2024

9:52:35 AM

1,813.5000

21

CEUX

Genmab A/S

26/06/2024

9:52:35 AM

1,813.5000

5

TQEX

Genmab A/S

26/06/2024

9:57:21 AM

1,816.0000

34

CEUX

Genmab A/S

26/06/2024

9:57:21 AM

1,816.0000

61

CEUX

Genmab A/S

26/06/2024

9:57:21 AM

1,816.0000

14

AQEU

Genmab A/S

26/06/2024

9:57:21 AM

1,816.0000

15

TQEX

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

12

XCSE

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

10

XCSE

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

19

XCSE

Genmab A/S

26/06/2024

9:57:21 AM

1,816.0000

107

XCSE

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

22

XCSE

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

19

XCSE

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

22

XCSE

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

19

XCSE

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

14

XCSE

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

18

XCSE

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

20

CEUX

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

4

CEUX

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

9

CEUX

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

5

CEUX

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

20

CEUX

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

18

CEUX

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

9

CEUX

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

18

CEUX

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

2

CEUX

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

18

CEUX

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

3

CEUX

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

11

CEUX

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

3

AQEU

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

2

AQEU

127

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

3

AQEU

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

2

AQEU

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

5

TQEX

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

5

TQEX

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

5

TQEX

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

5

TQEX

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

3

CEUX

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

3

AQEU

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

2

AQEU

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

3

AQEU

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

2

AQEU

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

2

AQEU

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

3

AQEU

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

2

AQEU

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

5

TQEX

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

5

TQEX

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

5

TQEX

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

5

TQEX

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

5

TQEX

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

5

TQEX

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

50

CEUX

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

3

CEUX

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

18

XCSE

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

30

XCSE

Genmab A/S

26/06/2024

9:57:21 AM

1,815.5000

2

XCSE

Genmab A/S

26/06/2024

10:01:28 AM

1,814.0000

50

XCSE

Genmab A/S

26/06/2024

10:01:28 AM

1,814.0000

51

XCSE

Genmab A/S

26/06/2024

10:01:28 AM

1,814.0000

23

XCSE

Genmab A/S

26/06/2024

10:01:28 AM

1,814.0000

38

XCSE

Genmab A/S

26/06/2024

10:01:28 AM

1,814.0000

90

CEUX

Genmab A/S

26/06/2024

10:01:28 AM

1,814.0000

21

CEUX

Genmab A/S

26/06/2024

10:01:28 AM

1,814.0000

19

CEUX

Genmab A/S

26/06/2024

10:01:28 AM

1,814.0000

13

AQEU

Genmab A/S

26/06/2024

10:01:28 AM

1,814.0000

3

AQEU

Genmab A/S

26/06/2024

10:01:28 AM

1,814.0000

3

AQEU

Genmab A/S

26/06/2024

10:01:28 AM

1,814.0000

14

TQEX

Genmab A/S

26/06/2024

10:01:28 AM

1,814.0000

5

TQEX

Genmab A/S

26/06/2024

10:01:28 AM

1,814.0000

9

TQEX

Genmab A/S

26/06/2024

10:01:28 AM

1,814.0000

5

TQEX

Genmab A/S

26/06/2024

10:01:28 AM

1,814.0000

18

CEUX

Genmab A/S

26/06/2024

10:01:28 AM

1,814.0000

5

TQEX

Genmab A/S

26/06/2024

10:01:28 AM

1,814.0000

5

TQEX

Genmab A/S

26/06/2024

10:01:28 AM

1,814.0000

5

TQEX

Genmab A/S

26/06/2024

10:01:28 AM

1,814.0000

50

XCSE

Genmab A/S

26/06/2024

10:23:12 AM

1,810.0000

10

CEUX

Genmab A/S

26/06/2024

10:23:12 AM

1,810.0000

10

XCSE

Genmab A/S

26/06/2024

10:23:12 AM

1,810.0000

10

CEUX

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

26

XCSE

128

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

24

CEUX

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

24

CEUX

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

24

CEUX

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

24

CEUX

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

24

CEUX

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

4

CEUX

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

11

CEUX

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

13

CEUX

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

24

CEUX

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

24

CEUX

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

12

CEUX

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

4

AQEU

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

4

AQEU

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

4

AQEU

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

4

AQEU

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

5

TQEX

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

5

TQEX

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

5

TQEX

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

24

CEUX

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

24

CEUX

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

6

CEUX

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

9

CEUX

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

26

XCSE

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

51

XCSE

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

26

XCSE

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

5

XCSE

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

21

XCSE

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

23

XCSE

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

3

XCSE

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

8

XCSE

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

2

XCSE

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

29

XCSE

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

19

CEUX

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

5

CEUX

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

26

XCSE

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

5

TQEX

Genmab A/S

26/06/2024

10:25:50 AM

1,811.0000

3

CEUX

Genmab A/S

26/06/2024

10:29:55 AM

1,813.5000

6

CEUX

Genmab A/S

26/06/2024

10:29:55 AM

1,813.5000

27

CEUX

Genmab A/S

26/06/2024

10:29:55 AM

1,813.5000

6

CEUX

Genmab A/S

26/06/2024

10:29:55 AM

1,813.5000

5

TQEX

Genmab A/S

26/06/2024

10:29:55 AM

1,813.5000

5

TQEX

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

18

CEUX

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

18

CEUX

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

18

CEUX

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

2

AQEU

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

2

AQEU

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

2

AQEU

129

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

2

AQEU

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

2

TQEX

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

3

TQEX

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

5

TQEX

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

5

TQEX

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

18

XCSE

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

60

XCSE

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

18

XCSE

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

18

XCSE

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

5

TQEX

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

18

CEUX

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

18

CEUX

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

9

CEUX

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

5

TQEX

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

18

CEUX

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

1

CEUX

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

3

CEUX

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

18

XCSE

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

2

CEUX

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

18

XCSE

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

3

XCSE

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

15

XCSE

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

18

XCSE

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

7

XCSE

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

15

XCSE

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

3

XCSE

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

13

CEUX

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

13

CEUX

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

2

AQEU

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

5

TQEX

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

5

TQEX

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

5

CEUX

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

2

AQEU

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

2

AQEU

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

2

TQEX

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

3

TQEX

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

2

TQEX

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

8

XCSE

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

36

CEUX

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

4

TQEX

Genmab A/S

26/06/2024

10:30:13 AM

1,812.5000

39

CEUX

Genmab A/S

26/06/2024

10:32:25 AM

1,813.5000

18

XCSE

Genmab A/S

26/06/2024

10:32:25 AM

1,813.5000

18

XCSE

Genmab A/S

26/06/2024

10:32:25 AM

1,813.5000

17

CEUX

Genmab A/S

26/06/2024

10:32:25 AM

1,813.5000

1

CEUX

Genmab A/S

26/06/2024

10:32:25 AM

1,813.5000

2

AQEU

Genmab A/S

26/06/2024

10:32:25 AM

1,813.5000

2

AQEU

Genmab A/S

26/06/2024

10:32:25 AM

1,813.5000

2

AQEU

130

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

10:32:25 AM

1,813.5000

5

TQEX

Genmab A/S

26/06/2024

10:32:25 AM

1,813.5000

6

CEUX

Genmab A/S

26/06/2024

10:32:25 AM

1,813.5000

18

XCSE

Genmab A/S

26/06/2024

10:32:25 AM

1,813.5000

1

XCSE

Genmab A/S

26/06/2024

10:32:25 AM

1,813.5000

3

XCSE

Genmab A/S

26/06/2024

10:32:25 AM

1,813.5000

1

CEUX

Genmab A/S

26/06/2024

10:37:24 AM

1,814.0000

2

XCSE

Genmab A/S

26/06/2024

10:38:02 AM

1,814.0000

8

XCSE

Genmab A/S

26/06/2024

10:38:52 AM

1,815.0000

37

XCSE

Genmab A/S

26/06/2024

10:38:53 AM

1,815.0000

8

XCSE

Genmab A/S

26/06/2024

10:38:53 AM

1,815.0000

39

XCSE

Genmab A/S

26/06/2024

10:38:53 AM

1,815.0000

6

XCSE

Genmab A/S

26/06/2024

10:39:02 AM

1,815.0000

30

XCSE

Genmab A/S

26/06/2024

10:39:02 AM

1,815.0000

50

XCSE

Genmab A/S

26/06/2024

10:39:02 AM

1,815.0000

9

XCSE

Genmab A/S

26/06/2024

10:39:13 AM

1,815.0000

30

XCSE

Genmab A/S

26/06/2024

10:39:13 AM

1,814.0000

1

AQEU

Genmab A/S

26/06/2024

10:39:13 AM

1,814.0000

16

AQEU

Genmab A/S

26/06/2024

10:39:13 AM

1,814.0000

4

TQEX

Genmab A/S

26/06/2024

10:39:13 AM

1,814.0000

10

XCSE

Genmab A/S

26/06/2024

10:39:13 AM

1,814.0000

50

XCSE

Genmab A/S

26/06/2024

10:39:13 AM

1,814.0000

10

XCSE

Genmab A/S

26/06/2024

10:39:13 AM

1,814.0000

10

XCSE

Genmab A/S

26/06/2024

10:39:13 AM

1,814.0000

10

XCSE

Genmab A/S

26/06/2024

10:39:13 AM

1,814.0000

10

XCSE

Genmab A/S

26/06/2024

10:39:13 AM

1,814.0000

1

AQEU

Genmab A/S

26/06/2024

10:39:13 AM

1,814.0000

2

AQEU

Genmab A/S

26/06/2024

10:39:13 AM

1,814.0000

1

TQEX

Genmab A/S

26/06/2024

10:39:13 AM

1,814.0000

10

CEUX

Genmab A/S

26/06/2024

10:39:13 AM

1,814.0000

10

CEUX

Genmab A/S

26/06/2024

10:39:13 AM

1,814.0000

5

CEUX

Genmab A/S

26/06/2024

10:39:13 AM

1,814.0000

10

CEUX

Genmab A/S

26/06/2024

10:39:13 AM

1,814.0000

5

CEUX

Genmab A/S

26/06/2024

10:39:13 AM

1,814.0000

1

AQEU

Genmab A/S

26/06/2024

10:39:13 AM

1,814.0000

2

XCSE

Genmab A/S

26/06/2024

10:39:13 AM

1,814.0000

8

XCSE

Genmab A/S

26/06/2024

10:39:16 AM

1,814.0000

2

CEUX

Genmab A/S

26/06/2024

10:39:25 AM

1,814.0000

10

XCSE

Genmab A/S

26/06/2024

10:39:25 AM

1,814.0000

10

XCSE

Genmab A/S

26/06/2024

10:39:25 AM

1,814.0000

6

XCSE

Genmab A/S

26/06/2024

10:39:25 AM

1,814.0000

7

XCSE

Genmab A/S

26/06/2024

10:39:25 AM

1,814.0000

3

XCSE

Genmab A/S

26/06/2024

10:39:25 AM

1,814.0000

8

CEUX

Genmab A/S

26/06/2024

10:39:25 AM

1,814.0000

10

CEUX

Genmab A/S

26/06/2024

10:39:25 AM

1,814.0000

10

CEUX

Genmab A/S

26/06/2024

10:39:25 AM

1,814.0000

5

CEUX

Genmab A/S

26/06/2024

10:39:25 AM

1,814.0000

5

TQEX

Genmab A/S

26/06/2024

10:39:25 AM

1,814.0000

3

TQEX

131

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

10:39:25 AM

1,814.0000

10

CEUX

Genmab A/S

26/06/2024

10:39:25 AM

1,814.0000

5

CEUX

Genmab A/S

26/06/2024

10:39:25 AM

1,814.0000

1

CEUX

Genmab A/S

26/06/2024

10:39:25 AM

1,814.0000

10

XCSE

Genmab A/S

26/06/2024

10:39:46 AM

1,813.5000

20

CEUX

Genmab A/S

26/06/2024

10:39:46 AM

1,813.5000

20

CEUX

Genmab A/S

26/06/2024

10:39:46 AM

1,813.5000

5

TQEX

Genmab A/S

26/06/2024

10:41:01 AM

1,813.5000

20

XCSE

Genmab A/S

26/06/2024

10:41:01 AM

1,813.5000

7

XCSE

Genmab A/S

26/06/2024

10:42:20 AM

1,814.5000

8

AQEU

Genmab A/S

26/06/2024

10:42:20 AM

1,814.5000

29

AQEU

Genmab A/S

26/06/2024

10:42:42 AM

1,814.5000

40

CEUX

Genmab A/S

26/06/2024

10:43:03 AM

1,814.5000

9

CEUX

Genmab A/S

26/06/2024

10:43:03 AM

1,814.5000

2

AQEU

Genmab A/S

26/06/2024

10:43:03 AM

1,814.5000

7

AQEU

Genmab A/S

26/06/2024

10:44:04 AM

1,814.5000

36

CEUX

Genmab A/S

26/06/2024

10:44:04 AM

1,814.5000

16

AQEU

Genmab A/S

26/06/2024

10:44:04 AM

1,814.5000

2

AQEU

Genmab A/S

26/06/2024

10:44:04 AM

1,814.5000

6

XCSE

Genmab A/S

26/06/2024

10:44:45 AM

1,814.5000

1

CEUX

Genmab A/S

26/06/2024

10:44:45 AM

1,814.5000

37

CEUX

Genmab A/S

26/06/2024

10:44:45 AM

1,814.5000

38

CEUX

Genmab A/S

26/06/2024

10:44:45 AM

1,814.5000

6

AQEU

Genmab A/S

26/06/2024

10:44:45 AM

1,814.5000

6

AQEU

Genmab A/S

26/06/2024

10:44:45 AM

1,814.5000

6

AQEU

Genmab A/S

26/06/2024

10:44:45 AM

1,814.5000

6

AQEU

Genmab A/S

26/06/2024

10:44:45 AM

1,814.5000

6

AQEU

Genmab A/S

26/06/2024

10:44:45 AM

1,814.5000

6

AQEU

Genmab A/S

26/06/2024

10:44:45 AM

1,814.5000

6

AQEU

Genmab A/S

26/06/2024

10:44:45 AM

1,814.5000

6

TQEX

Genmab A/S

26/06/2024

10:44:45 AM

1,814.5000

9

TQEX

Genmab A/S

26/06/2024

10:44:45 AM

1,814.5000

44

XCSE

Genmab A/S

26/06/2024

10:44:45 AM

1,814.5000

40

XCSE

Genmab A/S

26/06/2024

10:44:45 AM

1,814.5000

25

XCSE

Genmab A/S

26/06/2024

10:44:53 AM

1,814.5000

4

CEUX

Genmab A/S

26/06/2024

10:45:54 AM

1,815.0000

38

TQEX

Genmab A/S

26/06/2024

10:46:22 AM

1,815.0000

7

AQEU

Genmab A/S

26/06/2024

10:46:22 AM

1,815.0000

29

TQEX

Genmab A/S

26/06/2024

10:46:39 AM

1,815.0000

17

TQEX

Genmab A/S

26/06/2024

10:46:39 AM

1,815.0000

2

TQEX

Genmab A/S

26/06/2024

10:46:57 AM

1,814.5000

10

CEUX

Genmab A/S

26/06/2024

10:46:57 AM

1,814.5000

24

CEUX

Genmab A/S

26/06/2024

10:46:57 AM

1,814.5000

38

CEUX

Genmab A/S

26/06/2024

10:46:57 AM

1,814.5000

38

CEUX

Genmab A/S

26/06/2024

10:46:57 AM

1,814.5000

19

CEUX

Genmab A/S

26/06/2024

10:47:02 AM

1,814.5000

40

XCSE

Genmab A/S

26/06/2024

10:47:02 AM

1,814.5000

4

XCSE

Genmab A/S

26/06/2024

10:47:02 AM

1,814.5000

40

XCSE

132

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

10:47:02 AM

1,814.5000

17

XCSE

Genmab A/S

26/06/2024

10:47:02 AM

1,814.5000

27

XCSE

Genmab A/S

26/06/2024

10:47:02 AM

1,814.5000

34

XCSE

Genmab A/S

26/06/2024

10:47:02 AM

1,814.5000

6

XCSE

Genmab A/S

26/06/2024

10:47:02 AM

1,814.5000

6

XCSE

Genmab A/S

26/06/2024

10:47:02 AM

1,814.5000

38

CEUX

Genmab A/S

26/06/2024

10:47:02 AM

1,814.5000

6

TQEX

Genmab A/S

26/06/2024

10:47:02 AM

1,814.5000

34

CEUX

Genmab A/S

26/06/2024

10:47:02 AM

1,814.5000

4

CEUX

Genmab A/S

26/06/2024

10:47:02 AM

1,814.5000

23

CEUX

Genmab A/S

26/06/2024

10:47:02 AM

1,814.5000

2

AQEU

Genmab A/S

26/06/2024

10:47:02 AM

1,814.5000

6

XCSE

Genmab A/S

26/06/2024

10:47:02 AM

1,814.5000

5

CEUX

Genmab A/S

26/06/2024

10:47:02 AM

1,814.0000

50

XCSE

Genmab A/S

26/06/2024

10:47:02 AM

1,814.0000

23

XCSE

Genmab A/S

26/06/2024

10:47:47 AM

1,813.5000

3

CEUX

Genmab A/S

26/06/2024

10:50:04 AM

1,813.0000

13

CEUX

Genmab A/S

26/06/2024

10:50:04 AM

1,813.0000

47

CEUX

Genmab A/S

26/06/2024

10:50:04 AM

1,813.0000

9

TQEX

Genmab A/S

26/06/2024

10:50:04 AM

1,813.0000

66

XCSE

Genmab A/S

26/06/2024

10:50:04 AM

1,813.0000

30

XCSE

Genmab A/S

26/06/2024

10:50:04 AM

1,813.0000

36

XCSE

Genmab A/S

26/06/2024

10:50:04 AM

1,813.0000

60

CEUX

Genmab A/S

26/06/2024

10:50:04 AM

1,813.0000

10

CEUX

Genmab A/S

26/06/2024

10:50:04 AM

1,813.0000

9

TQEX

Genmab A/S

26/06/2024

10:50:04 AM

1,813.0000

1

TQEX

Genmab A/S

26/06/2024

10:50:04 AM

1,813.0000

60

CEUX

Genmab A/S

26/06/2024

10:52:39 AM

1,813.0000

6

AQEU

Genmab A/S

26/06/2024

10:52:39 AM

1,813.0000

2

AQEU

Genmab A/S

26/06/2024

10:55:12 AM

1,813.0000

8

AQEU

Genmab A/S

26/06/2024

10:56:14 AM

1,814.0000

6

CEUX

Genmab A/S

26/06/2024

10:56:14 AM

1,814.0000

20

CEUX

Genmab A/S

26/06/2024

10:56:14 AM

1,814.0000

20

CEUX

Genmab A/S

26/06/2024

10:56:14 AM

1,814.0000

11

CEUX

Genmab A/S

26/06/2024

10:56:14 AM

1,814.0000

15

CEUX

Genmab A/S

26/06/2024

10:56:14 AM

1,814.0000

9

TQEX

Genmab A/S

26/06/2024

10:56:14 AM

1,814.0000

14

TQEX

Genmab A/S

26/06/2024

10:56:14 AM

1,814.0000

13

TQEX

Genmab A/S

26/06/2024

10:56:21 AM

1,813.5000

40

XCSE

Genmab A/S

26/06/2024

10:56:21 AM

1,813.5000

100

XCSE

Genmab A/S

26/06/2024

10:56:21 AM

1,813.5000

46

XCSE

Genmab A/S

26/06/2024

10:56:21 AM

1,813.5000

167

CEUX

Genmab A/S

26/06/2024

10:56:21 AM

1,813.5000

26

TQEX

Genmab A/S

26/06/2024

10:56:21 AM

1,813.0000

40

CEUX

Genmab A/S

26/06/2024

10:56:21 AM

1,813.0000

25

CEUX

Genmab A/S

26/06/2024

10:56:21 AM

1,813.0000

5

CEUX

Genmab A/S

26/06/2024

10:56:21 AM

1,813.0000

70

CEUX

Genmab A/S

26/06/2024

10:56:21 AM

1,813.0000

7

CEUX

133

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

10:56:21 AM

1,813.0000

7

AQEU

Genmab A/S

26/06/2024

10:56:21 AM

1,813.0000

3

AQEU

Genmab A/S

26/06/2024

10:56:21 AM

1,813.0000

10

AQEU

Genmab A/S

26/06/2024

10:56:21 AM

1,813.0000

10

AQEU

Genmab A/S

26/06/2024

10:56:21 AM

1,813.0000

10

AQEU

Genmab A/S

26/06/2024

10:56:21 AM

1,813.0000

11

TQEX

Genmab A/S

26/06/2024

10:56:21 AM

1,813.0000

11

TQEX

Genmab A/S

26/06/2024

10:56:21 AM

1,813.0000

11

TQEX

Genmab A/S

26/06/2024

10:56:21 AM

1,813.0000

11

TQEX

Genmab A/S

26/06/2024

10:56:21 AM

1,813.0000

2

TQEX

Genmab A/S

26/06/2024

10:56:21 AM

1,813.0000

3

XCSE

Genmab A/S

26/06/2024

10:56:21 AM

1,813.0000

29

XCSE

Genmab A/S

26/06/2024

10:56:21 AM

1,813.0000

20

XCSE

Genmab A/S

26/06/2024

10:56:21 AM

1,813.0000

25

XCSE

Genmab A/S

26/06/2024

10:56:21 AM

1,813.0000

20

XCSE

Genmab A/S

26/06/2024

10:56:21 AM

1,813.0000

65

XCSE

Genmab A/S

26/06/2024

10:56:21 AM

1,813.0000

4

CEUX

Genmab A/S

26/06/2024

11:02:32 AM

1,813.5000

9

XCSE

Genmab A/S

26/06/2024

11:02:32 AM

1,813.5000

9

CEUX

Genmab A/S

26/06/2024

11:02:32 AM

1,813.5000

9

CEUX

Genmab A/S

26/06/2024

11:02:32 AM

1,813.5000

5

TQEX

Genmab A/S

26/06/2024

11:02:32 AM

1,813.5000

9

XCSE

Genmab A/S

26/06/2024

11:02:32 AM

1,813.5000

9

XCSE

Genmab A/S

26/06/2024

11:02:32 AM

1,813.5000

9

XCSE

Genmab A/S

26/06/2024

11:02:32 AM

1,813.5000

2

XCSE

Genmab A/S

26/06/2024

11:02:57 AM

1,813.5000

9

CEUX

Genmab A/S

26/06/2024

11:02:57 AM

1,813.5000

9

CEUX

Genmab A/S

26/06/2024

11:02:57 AM

1,813.5000

9

CEUX

Genmab A/S

26/06/2024

11:02:57 AM

1,813.5000

9

CEUX

Genmab A/S

26/06/2024

11:02:57 AM

1,813.5000

9

CEUX

Genmab A/S

26/06/2024

11:02:57 AM

1,813.5000

5

CEUX

Genmab A/S

26/06/2024

11:02:57 AM

1,813.5000

1

AQEU

Genmab A/S

26/06/2024

11:02:57 AM

1,813.5000

5

TQEX

Genmab A/S

26/06/2024

11:02:57 AM

1,813.5000

5

TQEX

Genmab A/S

26/06/2024

11:02:57 AM

1,813.5000

4

TQEX

Genmab A/S

26/06/2024

11:02:57 AM

1,813.5000

5

TQEX

Genmab A/S

26/06/2024

11:02:57 AM

1,813.5000

1

TQEX

Genmab A/S

26/06/2024

11:02:57 AM

1,813.5000

9

XCSE

Genmab A/S

26/06/2024

11:02:57 AM

1,813.5000

9

XCSE

Genmab A/S

26/06/2024

11:02:57 AM

1,813.5000

37

XCSE

Genmab A/S

26/06/2024

11:02:57 AM

1,813.5000

9

XCSE

Genmab A/S

26/06/2024

11:02:57 AM

1,813.5000

9

CEUX

Genmab A/S

26/06/2024

11:02:57 AM

1,813.5000

9

XCSE

Genmab A/S

26/06/2024

11:03:39 AM

1,813.5000

9

XCSE

Genmab A/S

26/06/2024

11:03:39 AM

1,813.5000

9

CEUX

Genmab A/S

26/06/2024

11:03:39 AM

1,813.5000

9

XCSE

Genmab A/S

26/06/2024

11:03:39 AM

1,813.5000

5

CEUX

Genmab A/S

26/06/2024

11:03:39 AM

1,813.5000

4

CEUX

134

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

11:03:39 AM

1,813.5000

5

TQEX

Genmab A/S

26/06/2024

11:03:39 AM

1,813.5000

9

XCSE

Genmab A/S

26/06/2024

11:03:39 AM

1,813.5000

5

TQEX

Genmab A/S

26/06/2024

11:05:35 AM

1,814.0000

14

AQEU

Genmab A/S

26/06/2024

11:05:35 AM

1,814.0000

20

AQEU

Genmab A/S

26/06/2024

11:05:52 AM

1,813.5000

9

CEUX

Genmab A/S

26/06/2024

11:05:52 AM

1,813.5000

8

CEUX

Genmab A/S

26/06/2024

11:05:52 AM

1,813.5000

9

CEUX

Genmab A/S

26/06/2024

11:05:52 AM

1,813.5000

8

CEUX

Genmab A/S

26/06/2024

11:05:52 AM

1,813.5000

2

CEUX

Genmab A/S

26/06/2024

11:05:52 AM

1,813.5000

9

CEUX

Genmab A/S

26/06/2024

11:05:52 AM

1,813.5000

8

CEUX

Genmab A/S

26/06/2024

11:05:52 AM

1,813.5000

5

TQEX

Genmab A/S

26/06/2024

11:05:52 AM

1,813.5000

5

TQEX

Genmab A/S

26/06/2024

11:05:52 AM

1,813.5000

5

TQEX

Genmab A/S

26/06/2024

11:05:52 AM

1,813.5000

5

TQEX

Genmab A/S

26/06/2024

11:05:52 AM

1,813.5000

1

TQEX

Genmab A/S

26/06/2024

11:05:52 AM

1,813.5000

5

TQEX

Genmab A/S

26/06/2024

11:05:52 AM

1,813.5000

5

TQEX

Genmab A/S

26/06/2024

11:05:52 AM

1,813.5000

1

TQEX

Genmab A/S

26/06/2024

11:05:52 AM

1,813.5000

9

CEUX

Genmab A/S

26/06/2024

11:05:52 AM

1,813.5000

8

CEUX

Genmab A/S

26/06/2024

11:05:52 AM

1,813.5000

9

XCSE

Genmab A/S

26/06/2024

11:05:52 AM

1,813.5000

8

XCSE

Genmab A/S

26/06/2024

11:05:52 AM

1,813.5000

9

XCSE

Genmab A/S

26/06/2024

11:05:52 AM

1,813.5000

8

XCSE

Genmab A/S

26/06/2024

11:05:52 AM

1,813.5000

9

XCSE

Genmab A/S

26/06/2024

11:05:52 AM

1,813.5000

8

XCSE

Genmab A/S

26/06/2024

11:05:52 AM

1,813.5000

9

CEUX

Genmab A/S

26/06/2024

11:05:52 AM

1,813.5000

8

CEUX

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

9

XCSE

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

5

TQEX

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

2

CEUX

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

9

XCSE

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

5

TQEX

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

7

CEUX

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

9

CEUX

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

7

CEUX

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

7

CEUX

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

1

AQEU

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

5

TQEX

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

2

CEUX

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

9

CEUX

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

5

TQEX

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

9

XCSE

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

9

XCSE

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

9

CEUX

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

9

CEUX

135

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

5

TQEX

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

5

TQEX

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

9

CEUX

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

9

CEUX

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

9

CEUX

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

9

CEUX

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

1

AQEU

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

5

TQEX

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

5

TQEX

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

2

CEUX

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

7

CEUX

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

2

CEUX

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

4

CEUX

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

5

TQEX

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

6

XCSE

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

24

XCSE

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

24

XCSE

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

30

XCSE

Genmab A/S

26/06/2024

11:06:16 AM

1,813.0000

20

CEUX

Genmab A/S

26/06/2024

11:06:16 AM

1,813.0000

20

CEUX

Genmab A/S

26/06/2024

11:06:16 AM

1,813.0000

19

CEUX

Genmab A/S

26/06/2024

11:06:16 AM

1,813.0000

2

AQEU

Genmab A/S

26/06/2024

11:06:16 AM

1,813.0000

2

AQEU

Genmab A/S

26/06/2024

11:06:16 AM

1,813.0000

2

AQEU

Genmab A/S

26/06/2024

11:06:16 AM

1,813.0000

2

AQEU

Genmab A/S

26/06/2024

11:06:16 AM

1,813.0000

2

AQEU

Genmab A/S

26/06/2024

11:06:16 AM

1,813.0000

2

AQEU

Genmab A/S

26/06/2024

11:06:16 AM

1,813.0000

2

AQEU

Genmab A/S

26/06/2024

11:06:16 AM

1,813.0000

2

AQEU

Genmab A/S

26/06/2024

11:06:16 AM

1,813.0000

5

TQEX

Genmab A/S

26/06/2024

11:06:16 AM

1,813.0000

4

TQEX

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

3

XCSE

Genmab A/S

26/06/2024

11:06:16 AM

1,813.0000

20

XCSE

Genmab A/S

26/06/2024

11:06:16 AM

1,813.0000

53

XCSE

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

21

XCSE

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

3

XCSE

Genmab A/S

26/06/2024

11:06:16 AM

1,813.5000

10

XCSE

Genmab A/S

26/06/2024

11:06:16 AM

1,813.0000

20

XCSE

Genmab A/S

26/06/2024

11:06:16 AM

1,813.0000

53

XCSE

Genmab A/S

26/06/2024

11:06:16 AM

1,813.0000

24

XCSE

Genmab A/S

26/06/2024

11:06:16 AM

1,813.0000

47

XCSE

Genmab A/S

26/06/2024

11:06:16 AM

1,813.0000

40

XCSE

Genmab A/S

26/06/2024

11:10:57 AM

1,811.5000

15

XCSE

Genmab A/S

26/06/2024

11:10:57 AM

1,811.5000

13

XCSE

Genmab A/S

26/06/2024

11:10:57 AM

1,811.5000

27

CEUX

Genmab A/S

26/06/2024

11:10:57 AM

1,811.5000

5

TQEX

Genmab A/S

26/06/2024

11:10:57 AM

1,811.5000

28

XCSE

Genmab A/S

26/06/2024

11:10:57 AM

1,811.5000

27

CEUX

136

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

11:13:55 AM

1,812.0000

51

CEUX

Genmab A/S

26/06/2024

11:13:55 AM

1,812.0000

52

CEUX

Genmab A/S

26/06/2024

11:13:55 AM

1,812.0000

15

AQEU

Genmab A/S

26/06/2024

11:13:55 AM

1,812.0000

15

TQEX

Genmab A/S

26/06/2024

11:13:55 AM

1,812.0000

114

XCSE

Genmab A/S

26/06/2024

11:14:01 AM

1,811.5000

19

XCSE

Genmab A/S

26/06/2024

11:14:01 AM

1,811.5000

9

XCSE

Genmab A/S

26/06/2024

11:14:42 AM

1,812.5000

10

CEUX

Genmab A/S

26/06/2024

11:14:42 AM

1,812.5000

5

TQEX

Genmab A/S

26/06/2024

11:14:42 AM

1,812.5000

5

TQEX

Genmab A/S

26/06/2024

11:14:42 AM

1,812.5000

10

XCSE

Genmab A/S

26/06/2024

11:14:42 AM

1,812.5000

2

XCSE

Genmab A/S

26/06/2024

11:14:42 AM

1,812.5000

8

XCSE

Genmab A/S

26/06/2024

11:14:42 AM

1,812.5000

10

XCSE

Genmab A/S

26/06/2024

11:14:42 AM

1,812.5000

32

XCSE

Genmab A/S

26/06/2024

11:14:42 AM

1,812.5000

10

CEUX

Genmab A/S

26/06/2024

11:14:42 AM

1,812.5000

10

CEUX

Genmab A/S

26/06/2024

11:14:42 AM

1,812.5000

10

CEUX

Genmab A/S

26/06/2024

11:14:42 AM

1,812.5000

6

CEUX

Genmab A/S

26/06/2024

11:14:42 AM

1,812.5000

5

TQEX

Genmab A/S

26/06/2024

11:14:42 AM

1,812.5000

2

CEUX

Genmab A/S

26/06/2024

11:14:42 AM

1,812.5000

8

CEUX

Genmab A/S

26/06/2024

11:14:42 AM

1,812.5000

5

TQEX

Genmab A/S

26/06/2024

11:14:42 AM

1,812.5000

10

XCSE

Genmab A/S

26/06/2024

11:16:18 AM

1,811.0000

38

XCSE

Genmab A/S

26/06/2024

11:16:18 AM

1,811.0000

34

CEUX

Genmab A/S

26/06/2024

11:19:33 AM

1,811.0000

2

XCSE

Genmab A/S

26/06/2024

11:20:20 AM

1,811.5000

71

XCSE

Genmab A/S

26/06/2024

11:20:20 AM

1,811.5000

71

XCSE

Genmab A/S

26/06/2024

11:20:20 AM

1,811.5000

26

XCSE

Genmab A/S

26/06/2024

11:20:20 AM

1,811.5000

39

CEUX

Genmab A/S

26/06/2024

11:20:20 AM

1,811.5000

25

CEUX

Genmab A/S

26/06/2024

11:20:20 AM

1,811.5000

3

CEUX

Genmab A/S

26/06/2024

11:20:20 AM

1,811.5000

9

AQEU

Genmab A/S

26/06/2024

11:20:20 AM

1,811.5000

9

AQEU

Genmab A/S

26/06/2024

11:20:20 AM

1,811.5000

10

TQEX

Genmab A/S

26/06/2024

11:20:20 AM

1,811.5000

10

TQEX

Genmab A/S

26/06/2024

11:20:20 AM

1,811.5000

17

CEUX

Genmab A/S

26/06/2024

11:20:20 AM

1,811.5000

10

TQEX

Genmab A/S

26/06/2024

11:20:20 AM

1,811.5000

46

CEUX

Genmab A/S

26/06/2024

11:20:20 AM

1,811.5000

7

AQEU

Genmab A/S

26/06/2024

11:20:20 AM

1,811.5000

7

TQEX

Genmab A/S

26/06/2024

11:20:20 AM

1,811.5000

18

XCSE

Genmab A/S

26/06/2024

11:20:21 AM

1,811.5000

2

XCSE

Genmab A/S

26/06/2024

11:20:21 AM

1,811.5000

31

XCSE

Genmab A/S

26/06/2024

11:23:25 AM

1,811.0000

116

CEUX

Genmab A/S

26/06/2024

11:23:25 AM

1,811.0000

8

CEUX

Genmab A/S

26/06/2024

11:24:30 AM

1,811.0000

12

CEUX

137

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

11:25:32 AM

1,811.5000

17

TQEX

Genmab A/S

26/06/2024

11:25:32 AM

1,811.5000

23

TQEX

Genmab A/S

26/06/2024

11:25:53 AM

1,811.5000

1

CEUX

Genmab A/S

26/06/2024

11:25:53 AM

1,811.5000

2

AQEU

Genmab A/S

26/06/2024

11:25:53 AM

1,811.5000

12

AQEU

Genmab A/S

26/06/2024

11:25:53 AM

1,811.5000

18

TQEX

Genmab A/S

26/06/2024

11:25:53 AM

1,811.5000

1

TQEX

Genmab A/S

26/06/2024

11:26:53 AM

1,811.5000

34

CEUX

Genmab A/S

26/06/2024

11:26:53 AM

1,811.5000

16

CEUX

Genmab A/S

26/06/2024

11:29:32 AM

1,812.0000

12

CEUX

Genmab A/S

26/06/2024

11:29:32 AM

1,812.0000

4

CEUX

Genmab A/S

26/06/2024

11:29:32 AM

1,812.0000

2

CEUX

Genmab A/S

26/06/2024

11:29:32 AM

1,812.0000

10

AQEU

Genmab A/S

26/06/2024

11:29:32 AM

1,812.0000

10

TQEX

Genmab A/S

26/06/2024

11:29:32 AM

1,812.0000

10

XCSE

Genmab A/S

26/06/2024

11:29:32 AM

1,812.0000

7

CEUX

Genmab A/S

26/06/2024

11:29:32 AM

1,812.0000

12

CEUX

Genmab A/S

26/06/2024

11:29:32 AM

1,812.0000

5

TQEX

Genmab A/S

26/06/2024

11:29:44 AM

1,812.5000

50

CEUX

Genmab A/S

26/06/2024

11:29:44 AM

1,812.5000

60

CEUX

Genmab A/S

26/06/2024

11:29:44 AM

1,812.0000

19

XCSE

Genmab A/S

26/06/2024

11:29:44 AM

1,812.5000

30

XCSE

Genmab A/S

26/06/2024

11:29:44 AM

1,812.0000

19

CEUX

Genmab A/S

26/06/2024

11:29:44 AM

1,812.0000

86

CEUX

Genmab A/S

26/06/2024

11:29:44 AM

1,812.5000

30

XCSE

Genmab A/S

26/06/2024

11:29:57 AM

1,812.0000

19

CEUX

Genmab A/S

26/06/2024

11:29:57 AM

1,812.0000

65

CEUX

Genmab A/S

26/06/2024

11:29:57 AM

1,812.0000

19

XCSE

Genmab A/S

26/06/2024

11:29:57 AM

1,812.0000

142

XCSE

Genmab A/S

26/06/2024

11:31:25 AM

1,812.0000

19

CEUX

Genmab A/S

26/06/2024

11:31:25 AM

1,812.0000

75

CEUX

Genmab A/S

26/06/2024

11:32:33 AM

1,812.0000

9

XCSE

Genmab A/S

26/06/2024

11:32:33 AM

1,812.0000

29

XCSE

Genmab A/S

26/06/2024

11:32:33 AM

1,812.0000

10

CEUX

Genmab A/S

26/06/2024

11:32:33 AM

1,812.0000

7

XCSE

Genmab A/S

26/06/2024

11:32:33 AM

1,812.0000

1

XCSE

Genmab A/S

26/06/2024

11:32:33 AM

1,812.0000

1

XCSE

Genmab A/S

26/06/2024

11:32:33 AM

1,812.0000

1

XCSE

Genmab A/S

26/06/2024

11:32:33 AM

1,812.0000

2

XCSE

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

5

TQEX

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

10

CEUX

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

10

CEUX

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

10

CEUX

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

5

CEUX

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

5

CEUX

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

1

AQEU

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

5

TQEX

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

5

TQEX

138

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

5

TQEX

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

5

TQEX

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

10

CEUX

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

5

TQEX

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

7

XCSE

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

5

XCSE

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

4

XCSE

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

3

XCSE

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

6

XCSE

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

1

XCSE

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

10

CEUX

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

5

TQEX

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

5

TQEX

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

5

TQEX

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

1

TQEX

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

10

CEUX

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

10

CEUX

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

10

CEUX

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

10

CEUX

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

1

AQEU

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

4

XCSE

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

5

XCSE

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

9

XCSE

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

10

CEUX

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

10

CEUX

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

5

TQEX

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

5

TQEX

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

10

CEUX

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

8

CEUX

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

1

AQEU

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

5

TQEX

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

5

TQEX

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

5

TQEX

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

9

XCSE

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

9

XCSE

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

9

XCSE

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

25

XCSE

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

25

XCSE

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

25

XCSE

Genmab A/S

26/06/2024

11:33:23 AM

1,812.0000

11

XCSE

Genmab A/S

26/06/2024

11:33:23 AM

1,811.5000

20

XCSE

Genmab A/S

26/06/2024

11:33:23 AM

1,811.5000

20

CEUX

Genmab A/S

26/06/2024

11:33:23 AM

1,811.5000

20

CEUX

Genmab A/S

26/06/2024

11:33:23 AM

1,811.5000

15

CEUX

Genmab A/S

26/06/2024

11:33:23 AM

1,811.5000

2

AQEU

Genmab A/S

26/06/2024

11:33:23 AM

1,811.5000

2

AQEU

Genmab A/S

26/06/2024

11:33:23 AM

1,811.5000

2

AQEU

Genmab A/S

26/06/2024

11:33:23 AM

1,811.5000

2

AQEU

139

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

11:33:23 AM

1,811.5000

2

AQEU

Genmab A/S

26/06/2024

11:33:23 AM

1,811.5000

2

AQEU

Genmab A/S

26/06/2024

11:33:23 AM

1,811.5000

2

AQEU

Genmab A/S

26/06/2024

11:33:23 AM

1,811.5000

1

TQEX

Genmab A/S

26/06/2024

11:33:23 AM

1,811.5000

4

TQEX

Genmab A/S

26/06/2024

11:33:23 AM

1,811.5000

5

TQEX

Genmab A/S

26/06/2024

11:33:23 AM

1,811.5000

5

TQEX

Genmab A/S

26/06/2024

11:33:23 AM

1,811.5000

5

TQEX

Genmab A/S

26/06/2024

11:33:23 AM

1,811.5000

4

TQEX

Genmab A/S

26/06/2024

11:33:23 AM

1,811.5000

20

XCSE

Genmab A/S

26/06/2024

11:33:23 AM

1,811.5000

19

XCSE

Genmab A/S

26/06/2024

11:33:23 AM

1,811.5000

36

CEUX

Genmab A/S

26/06/2024

11:33:23 AM

1,811.5000

4

CEUX

Genmab A/S

26/06/2024

11:33:23 AM

1,811.5000

4

CEUX

Genmab A/S

26/06/2024

11:33:23 AM

1,811.5000

8

AQEU

Genmab A/S

26/06/2024

11:38:24 AM

1,811.5000

50

CEUX

Genmab A/S

26/06/2024

11:38:24 AM

1,811.5000

11

CEUX

Genmab A/S

26/06/2024

11:38:24 AM

1,811.5000

61

CEUX

Genmab A/S

26/06/2024

11:38:24 AM

1,811.5000

17

CEUX

Genmab A/S

26/06/2024

11:38:24 AM

1,811.5000

9

AQEU

Genmab A/S

26/06/2024

11:38:24 AM

1,811.5000

5

AQEU

Genmab A/S

26/06/2024

11:38:24 AM

1,811.5000

4

AQEU

Genmab A/S

26/06/2024

11:38:24 AM

1,811.5000

9

AQEU

Genmab A/S

26/06/2024

11:38:24 AM

1,811.5000

9

AQEU

Genmab A/S

26/06/2024

11:38:24 AM

1,811.5000

8

AQEU

Genmab A/S

26/06/2024

11:38:24 AM

1,811.5000

9

TQEX

Genmab A/S

26/06/2024

11:38:24 AM

1,811.5000

1

TQEX

Genmab A/S

26/06/2024

11:38:24 AM

1,811.5000

3

TQEX

Genmab A/S

26/06/2024

11:38:24 AM

1,811.5000

2

TQEX

Genmab A/S

26/06/2024

11:38:24 AM

1,811.5000

3

TQEX

Genmab A/S

26/06/2024

11:38:24 AM

1,811.5000

5

TQEX

Genmab A/S

26/06/2024

11:38:24 AM

1,811.5000

3

TQEX

Genmab A/S

26/06/2024

11:38:24 AM

1,811.5000

6

TQEX

Genmab A/S

26/06/2024

11:38:24 AM

1,811.5000

19

XCSE

Genmab A/S

26/06/2024

11:38:24 AM

1,811.5000

11

XCSE

Genmab A/S

26/06/2024

11:38:24 AM

1,811.5000

4

XCSE

Genmab A/S

26/06/2024

11:38:24 AM

1,811.5000

34

XCSE

Genmab A/S

26/06/2024

11:38:24 AM

1,811.5000

15

XCSE

Genmab A/S

26/06/2024

11:38:24 AM

1,811.5000

49

XCSE

Genmab A/S

26/06/2024

11:38:24 AM

1,811.5000

25

CEUX

Genmab A/S

26/06/2024

11:38:24 AM

1,811.5000

1

AQEU

Genmab A/S

26/06/2024

11:38:24 AM

1,811.5000

1

AQEU

Genmab A/S

26/06/2024

11:38:24 AM

1,811.5000

7

AQEU

Genmab A/S

26/06/2024

11:38:24 AM

1,811.0000

18

CEUX

Genmab A/S

26/06/2024

11:38:24 AM

1,811.0000

18

XCSE

Genmab A/S

26/06/2024

11:38:24 AM

1,811.0000

5

TQEX

Genmab A/S

26/06/2024

11:38:24 AM

1,811.0000

3

XCSE

Genmab A/S

26/06/2024

11:38:24 AM

1,811.0000

14

XCSE

140

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

11:38:26 AM

1,811.0000

7

XCSE

Genmab A/S

26/06/2024

11:38:26 AM

1,811.0000

5

TQEX

Genmab A/S

26/06/2024

11:38:26 AM

1,811.0000

9

XCSE

Genmab A/S

26/06/2024

11:38:27 AM

1,811.0000

4

XCSE

Genmab A/S

26/06/2024

11:44:55 AM

1,811.0000

26

CEUX

Genmab A/S

26/06/2024

11:44:55 AM

1,811.0000

26

CEUX

Genmab A/S

26/06/2024

11:44:55 AM

1,811.0000

1

AQEU

Genmab A/S

26/06/2024

11:44:55 AM

1,811.0000

5

TQEX

Genmab A/S

26/06/2024

11:44:55 AM

1,811.0000

27

XCSE

Genmab A/S

26/06/2024

11:44:55 AM

1,811.0000

27

XCSE

Genmab A/S

26/06/2024

11:44:55 AM

1,811.0000

27

XCSE

Genmab A/S

26/06/2024

11:44:55 AM

1,811.0000

23

XCSE

Genmab A/S

26/06/2024

11:44:55 AM

1,811.0000

4

XCSE

Genmab A/S

26/06/2024

11:44:55 AM

1,811.0000

27

XCSE

Genmab A/S

26/06/2024

11:44:55 AM

1,811.0000

17

XCSE

Genmab A/S

26/06/2024

11:44:55 AM

1,811.0000

10

XCSE

Genmab A/S

26/06/2024

11:44:55 AM

1,811.0000

5

TQEX

Genmab A/S

26/06/2024

11:44:55 AM

1,811.0000

26

CEUX

Genmab A/S

26/06/2024

11:44:55 AM

1,811.0000

26

CEUX

Genmab A/S

26/06/2024

11:44:59 AM

1,811.0000

26

CEUX

Genmab A/S

26/06/2024

11:44:59 AM

1,811.0000

4

TQEX

Genmab A/S

26/06/2024

11:44:59 AM

1,811.0000

1

TQEX

Genmab A/S

26/06/2024

11:44:59 AM

1,811.0000

1

TQEX

Genmab A/S

26/06/2024

11:44:59 AM

1,811.0000

27

XCSE

Genmab A/S

26/06/2024

11:44:59 AM

1,811.0000

21

XCSE

Genmab A/S

26/06/2024

11:44:59 AM

1,811.0000

26

CEUX

Genmab A/S

26/06/2024

11:44:59 AM

1,811.0000

64

XCSE

Genmab A/S

26/06/2024

11:44:59 AM

1,811.0000

37

CEUX

Genmab A/S

26/06/2024

11:44:59 AM

1,811.0000

4

CEUX

Genmab A/S

26/06/2024

11:53:25 AM

1,812.0000

9

CEUX

Genmab A/S

26/06/2024

11:53:25 AM

1,812.0000

3

CEUX

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

25

CEUX

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

24

CEUX

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

50

CEUX

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

4

CEUX

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

25

CEUX

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

21

CEUX

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

25

CEUX

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

25

CEUX

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

4

CEUX

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

25

CEUX

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

3

AQEU

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

1

AQEU

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

11

AQEU

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

3

AQEU

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

2

AQEU

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

2

AQEU

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

10

AQEU

141

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

5

TQEX

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

5

TQEX

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

1

TQEX

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

13

TQEX

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

5

TQEX

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

3

TQEX

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

5

TQEX

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

22

TQEX

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

10

CEUX

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

26

XCSE

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

24

XCSE

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

50

XCSE

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

14

XCSE

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

26

XCSE

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

24

XCSE

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

30

XCSE

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

26

XCSE

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

38

XCSE

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

8

XCSE

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

14

XCSE

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

4

XCSE

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

18

XCSE

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

20

CEUX

Genmab A/S

26/06/2024

11:54:02 AM

1,811.5000

36

XCSE

Genmab A/S

26/06/2024

11:58:10 AM

1,811.5000

14

XCSE

Genmab A/S

26/06/2024

11:59:13 AM

1,812.5000

8

AQEU

Genmab A/S

26/06/2024

11:59:13 AM

1,812.5000

31

AQEU

Genmab A/S

26/06/2024

11:59:37 AM

1,812.0000

20

CEUX

Genmab A/S

26/06/2024

11:59:37 AM

1,812.0000

19

CEUX

Genmab A/S

26/06/2024

11:59:53 AM

1,811.5000

5

CEUX

Genmab A/S

26/06/2024

12:00:08 PM

1,812.0000

2

TQEX

Genmab A/S

26/06/2024

12:01:10 PM

1,811.5000

4

CEUX

Genmab A/S

26/06/2024

12:01:10 PM

1,811.5000

41

CEUX

Genmab A/S

26/06/2024

12:01:10 PM

1,811.5000

9

CEUX

Genmab A/S

26/06/2024

12:01:10 PM

1,811.5000

13

CEUX

Genmab A/S

26/06/2024

12:01:10 PM

1,811.5000

9

CEUX

Genmab A/S

26/06/2024

12:01:10 PM

1,811.5000

9

CEUX

Genmab A/S

26/06/2024

12:01:10 PM

1,811.5000

9

CEUX

Genmab A/S

26/06/2024

12:01:10 PM

1,811.5000

9

CEUX

Genmab A/S

26/06/2024

12:01:10 PM

1,811.5000

9

CEUX

Genmab A/S

26/06/2024

12:01:10 PM

1,811.5000

9

CEUX

Genmab A/S

26/06/2024

12:01:10 PM

1,811.5000

9

CEUX

Genmab A/S

26/06/2024

12:01:10 PM

1,811.5000

9

CEUX

Genmab A/S

26/06/2024

12:01:10 PM

1,811.5000

6

CEUX

Genmab A/S

26/06/2024

12:01:10 PM

1,811.5000

1

AQEU

Genmab A/S

26/06/2024

12:01:10 PM

1,811.5000

6

AQEU

Genmab A/S

26/06/2024

12:01:10 PM

1,811.5000

1

AQEU

Genmab A/S

26/06/2024

12:01:10 PM

1,811.5000

6

AQEU

142

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

12:01:10 PM

1,811.5000

2

AQEU

Genmab A/S

26/06/2024

12:01:10 PM

1,811.5000

9

CEUX

Genmab A/S

26/06/2024

12:01:10 PM

1,811.5000

5

TQEX

Genmab A/S

26/06/2024

12:01:10 PM

1,811.5000

7

TQEX

Genmab A/S

26/06/2024

12:01:10 PM

1,811.5000

2

TQEX

Genmab A/S

26/06/2024

12:01:10 PM

1,811.5000

5

TQEX

Genmab A/S

26/06/2024

12:01:10 PM

1,811.5000

7

TQEX

Genmab A/S

26/06/2024

12:01:10 PM

1,811.5000

5

TQEX

Genmab A/S

26/06/2024

12:01:10 PM

1,811.5000

5

TQEX

Genmab A/S

26/06/2024

12:01:10 PM

1,811.5000

2

TQEX

Genmab A/S

26/06/2024

12:01:10 PM

1,811.5000

8

XCSE

Genmab A/S

26/06/2024

12:01:10 PM

1,811.5000

45

XCSE

Genmab A/S

26/06/2024

12:01:10 PM

1,811.5000

8

XCSE

Genmab A/S

26/06/2024

12:01:10 PM

1,811.5000

13

XCSE

Genmab A/S

26/06/2024

12:01:10 PM

1,811.5000

30

XCSE

Genmab A/S

26/06/2024

12:01:10 PM

1,811.5000

6

XCSE

Genmab A/S

26/06/2024

12:01:10 PM

1,811.5000

2

XCSE

Genmab A/S

26/06/2024

12:01:10 PM

1,811.5000

9

CEUX

Genmab A/S

26/06/2024

12:01:10 PM

1,811.5000

9

CEUX

Genmab A/S

26/06/2024

12:01:10 PM

1,811.5000

3

TQEX

Genmab A/S

26/06/2024

12:01:51 PM

1,811.5000

8

XCSE

Genmab A/S

26/06/2024

12:01:52 PM

1,811.5000

8

XCSE

Genmab A/S

26/06/2024

12:01:52 PM

1,811.5000

9

CEUX

Genmab A/S

26/06/2024

12:01:52 PM

1,811.5000

5

TQEX

Genmab A/S

26/06/2024

12:02:01 PM

1,811.5000

5

XCSE

Genmab A/S

26/06/2024

12:02:41 PM

1,811.0000

1

AQEU

Genmab A/S

26/06/2024

12:06:21 PM

1,811.5000

15

CEUX

Genmab A/S

26/06/2024

12:06:21 PM

1,811.5000

41

CEUX

Genmab A/S

26/06/2024

12:06:21 PM

1,811.5000

9

CEUX

Genmab A/S

26/06/2024

12:06:21 PM

1,811.5000

88

CEUX

Genmab A/S

26/06/2024

12:06:21 PM

1,811.5000

56

CEUX

Genmab A/S

26/06/2024

12:06:21 PM

1,811.5000

9

CEUX

Genmab A/S

26/06/2024

12:06:21 PM

1,811.5000

61

XCSE

Genmab A/S

26/06/2024

12:06:21 PM

1,811.5000

31

XCSE

Genmab A/S

26/06/2024

12:06:21 PM

1,811.5000

47

XCSE

Genmab A/S

26/06/2024

12:06:21 PM

1,811.5000

3

XCSE

Genmab A/S

26/06/2024

12:06:21 PM

1,811.5000

104

XCSE

Genmab A/S

26/06/2024

12:06:21 PM

1,811.5000

50

XCSE

Genmab A/S

26/06/2024

12:06:21 PM

1,811.5000

11

XCSE

Genmab A/S

26/06/2024

12:06:21 PM

1,811.5000

93

XCSE

Genmab A/S

26/06/2024

12:06:21 PM

1,811.5000

10

XCSE

Genmab A/S

26/06/2024

12:06:21 PM

1,811.0000

51

XCSE

Genmab A/S

26/06/2024

12:06:21 PM

1,811.0000

6

XCSE

Genmab A/S

26/06/2024

12:06:21 PM

1,811.0000

51

XCSE

Genmab A/S

26/06/2024

12:06:21 PM

1,811.5000

30

XCSE

Genmab A/S

26/06/2024

12:06:21 PM

1,811.5000

50

XCSE

Genmab A/S

26/06/2024

12:06:21 PM

1,811.5000

1

XCSE

Genmab A/S

26/06/2024

12:06:21 PM

1,811.0000

43

XCSE

143

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

12:06:21 PM

1,811.0000

5

XCSE

Genmab A/S

26/06/2024

12:09:45 PM

1,809.5000

41

XCSE

Genmab A/S

26/06/2024

12:09:45 PM

1,809.5000

26

XCSE

Genmab A/S

26/06/2024

12:09:45 PM

1,810.0000

43

XCSE

Genmab A/S

26/06/2024

12:09:45 PM

1,810.0000

39

XCSE

Genmab A/S

26/06/2024

12:09:45 PM

1,810.0000

54

XCSE

Genmab A/S

26/06/2024

12:09:45 PM

1,810.0000

38

XCSE

Genmab A/S

26/06/2024

12:09:45 PM

1,809.5000

41

XCSE

Genmab A/S

26/06/2024

12:09:45 PM

1,809.5000

4

XCSE

Genmab A/S

26/06/2024

12:09:45 PM

1,809.5000

22

XCSE

Genmab A/S

26/06/2024

12:09:45 PM

1,809.5000

19

XCSE

Genmab A/S

26/06/2024

12:09:46 PM

1,809.5000

11

XCSE

Genmab A/S

26/06/2024

12:16:01 PM

1,807.5000

89

XCSE

Genmab A/S

26/06/2024

12:16:01 PM

1,807.5000

22

CEUX

Genmab A/S

26/06/2024

12:16:01 PM

1,807.5000

59

CEUX

Genmab A/S

26/06/2024

12:16:01 PM

1,807.5000

12

AQEU

Genmab A/S

26/06/2024

12:16:01 PM

1,807.5000

12

TQEX

Genmab A/S

26/06/2024

12:16:27 PM

1,806.0000

4

XCSE

Genmab A/S

26/06/2024

12:16:27 PM

1,806.0000

15

XCSE

Genmab A/S

26/06/2024

12:16:27 PM

1,806.0000

19

XCSE

Genmab A/S

26/06/2024

12:16:27 PM

1,806.0000

19

CEUX

Genmab A/S

26/06/2024

12:16:27 PM

1,806.0000

15

CEUX

Genmab A/S

26/06/2024

12:16:27 PM

1,806.0000

5

CEUX

Genmab A/S

26/06/2024

12:16:27 PM

1,806.0000

5

TQEX

Genmab A/S

26/06/2024

12:16:27 PM

1,806.0000

5

TQEX

Genmab A/S

26/06/2024

12:16:27 PM

1,806.0000

2

XCSE

Genmab A/S

26/06/2024

12:16:27 PM

1,806.0000

19

XCSE

Genmab A/S

26/06/2024

12:19:34 PM

1,807.0000

70

XCSE

Genmab A/S

26/06/2024

12:19:34 PM

1,807.0000

33

CEUX

Genmab A/S

26/06/2024

12:20:03 PM

1,807.0000

3

XCSE

Genmab A/S

26/06/2024

12:21:37 PM

1,807.0000

1

XCSE

Genmab A/S

26/06/2024

12:21:37 PM

1,807.0000

52

XCSE

Genmab A/S

26/06/2024

12:21:37 PM

1,807.0000

46

CEUX

Genmab A/S

26/06/2024

12:21:37 PM

1,807.0000

8

TQEX

Genmab A/S

26/06/2024

12:23:10 PM

1,807.5000

67

CEUX

Genmab A/S

26/06/2024

12:23:10 PM

1,807.5000

5

CEUX

Genmab A/S

26/06/2024

12:23:10 PM

1,807.5000

3

CEUX

Genmab A/S

26/06/2024

12:23:10 PM

1,807.5000

46

CEUX

Genmab A/S

26/06/2024

12:23:10 PM

1,807.5000

22

CEUX

Genmab A/S

26/06/2024

12:23:10 PM

1,807.5000

10

AQEU

Genmab A/S

26/06/2024

12:23:10 PM

1,807.5000

34

AQEU

Genmab A/S

26/06/2024

12:23:10 PM

1,807.5000

11

TQEX

Genmab A/S

26/06/2024

12:23:10 PM

1,807.5000

10

TQEX

Genmab A/S

26/06/2024

12:23:10 PM

1,807.5000

79

XCSE

Genmab A/S

26/06/2024

12:23:10 PM

1,807.5000

57

XCSE

Genmab A/S

26/06/2024

12:23:10 PM

1,807.5000

20

XCSE

Genmab A/S

26/06/2024

12:23:10 PM

1,807.5000

25

AQEU

Genmab A/S

26/06/2024

12:23:10 PM

1,807.0000

20

CEUX

144

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

12:23:10 PM

1,807.0000

33

CEUX

Genmab A/S

26/06/2024

12:23:10 PM

1,807.0000

3

CEUX

Genmab A/S

26/06/2024

12:23:10 PM

1,807.0000

74

XCSE

Genmab A/S

26/06/2024

12:23:10 PM

1,807.0000

30

CEUX

Genmab A/S

26/06/2024

12:28:20 PM

1,804.0000

21

XCSE

Genmab A/S

26/06/2024

12:28:20 PM

1,804.0000

10

XCSE

Genmab A/S

26/06/2024

12:31:13 PM

1,805.0000

11

CEUX

Genmab A/S

26/06/2024

12:31:13 PM

1,805.0000

12

XCSE

Genmab A/S

26/06/2024

12:33:00 PM

1,805.5000

39

CEUX

Genmab A/S

26/06/2024

12:33:43 PM

1,808.5000

2

AQEU

Genmab A/S

26/06/2024

12:33:43 PM

1,809.0000

8

CEUX

Genmab A/S

26/06/2024

12:33:43 PM

1,809.0000

8

CEUX

Genmab A/S

26/06/2024

12:33:43 PM

1,809.0000

8

CEUX

Genmab A/S

26/06/2024

12:33:43 PM

1,809.0000

8

CEUX

Genmab A/S

26/06/2024

12:33:43 PM

1,809.0000

8

CEUX

Genmab A/S

26/06/2024

12:33:43 PM

1,809.0000

8

CEUX

Genmab A/S

26/06/2024

12:33:43 PM

1,809.0000

8

CEUX

Genmab A/S

26/06/2024

12:33:43 PM

1,809.0000

8

CEUX

Genmab A/S

26/06/2024

12:33:43 PM

1,809.0000

8

CEUX

Genmab A/S

26/06/2024

12:33:43 PM

1,809.0000

8

CEUX

Genmab A/S

26/06/2024

12:33:43 PM

1,809.0000

8

CEUX

Genmab A/S

26/06/2024

12:33:43 PM

1,809.0000

8

CEUX

Genmab A/S

26/06/2024

12:33:43 PM

1,809.0000

8

CEUX

Genmab A/S

26/06/2024

12:33:43 PM

1,809.0000

8

CEUX

Genmab A/S

26/06/2024

12:33:43 PM

1,809.0000

8

CEUX

Genmab A/S

26/06/2024

12:33:43 PM

1,809.0000

8

CEUX

Genmab A/S

26/06/2024

12:33:43 PM

1,809.0000

8

CEUX

Genmab A/S

26/06/2024

12:33:43 PM

1,809.0000

8

CEUX

Genmab A/S

26/06/2024

12:33:43 PM

1,808.5000

7

CEUX

Genmab A/S

26/06/2024

12:33:43 PM

1,808.5000

7

CEUX

Genmab A/S

26/06/2024

12:33:43 PM

1,808.5000

7

CEUX

Genmab A/S

26/06/2024

12:33:43 PM

1,808.5000

7

CEUX

Genmab A/S

26/06/2024

12:33:43 PM

1,808.5000

7

CEUX

Genmab A/S

26/06/2024

12:33:43 PM

1,808.5000

6

CEUX

Genmab A/S

26/06/2024

12:33:43 PM

1,808.5000

3

CEUX

Genmab A/S

26/06/2024

12:33:43 PM

1,808.5000

5

TQEX

Genmab A/S

26/06/2024

12:33:43 PM

1,808.5000

9

TQEX

Genmab A/S

26/06/2024

12:33:43 PM

1,808.5000

43

XCSE

Genmab A/S

26/06/2024

12:33:43 PM

1,808.5000

7

XCSE

Genmab A/S

26/06/2024

12:33:43 PM

1,808.5000

28

XCSE

Genmab A/S

26/06/2024

12:33:43 PM

1,808.5000

11

XCSE

Genmab A/S

26/06/2024

12:33:43 PM

1,808.5000

20

XCSE

Genmab A/S

26/06/2024

12:33:43 PM

1,808.5000

7

XCSE

Genmab A/S

26/06/2024

12:33:43 PM

1,808.5000

7

XCSE

Genmab A/S

26/06/2024

12:33:43 PM

1,808.5000

14

XCSE

Genmab A/S

26/06/2024

12:33:43 PM

1,808.5000

16

XCSE

Genmab A/S

26/06/2024

12:33:43 PM

1,808.0000

25

XCSE

Genmab A/S

26/06/2024

12:33:43 PM

1,808.0000

18

XCSE

145

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

12:33:43 PM

1,808.0000

6

XCSE

Genmab A/S

26/06/2024

12:33:43 PM

1,808.5000

21

XCSE

Genmab A/S

26/06/2024

12:33:43 PM

1,808.5000

4

XCSE

Genmab A/S

26/06/2024

12:36:12 PM

1,807.5000

90

XCSE

Genmab A/S

26/06/2024

12:36:12 PM

1,807.0000

19

CEUX

Genmab A/S

26/06/2024

12:36:12 PM

1,807.0000

19

CEUX

Genmab A/S

26/06/2024

12:36:12 PM

1,807.0000

19

CEUX

Genmab A/S

26/06/2024

12:36:12 PM

1,807.0000

18

CEUX

Genmab A/S

26/06/2024

12:36:12 PM

1,807.0000

11

CEUX

Genmab A/S

26/06/2024

12:36:12 PM

1,807.0000

8

CEUX

Genmab A/S

26/06/2024

12:36:12 PM

1,807.0000

19

CEUX

Genmab A/S

26/06/2024

12:36:12 PM

1,807.0000

2

AQEU

Genmab A/S

26/06/2024

12:36:12 PM

1,807.0000

5

TQEX

Genmab A/S

26/06/2024

12:36:12 PM

1,807.0000

19

XCSE

Genmab A/S

26/06/2024

12:36:12 PM

1,807.0000

19

XCSE

Genmab A/S

26/06/2024

12:36:12 PM

1,807.0000

19

CEUX

Genmab A/S

26/06/2024

12:36:12 PM

1,807.0000

10

CEUX

Genmab A/S

26/06/2024

12:36:12 PM

1,807.0000

9

CEUX

Genmab A/S

26/06/2024

12:36:12 PM

1,807.0000

12

CEUX

Genmab A/S

26/06/2024

12:36:12 PM

1,807.0000

2

AQEU

Genmab A/S

26/06/2024

12:36:12 PM

1,807.0000

5

TQEX

Genmab A/S

26/06/2024

12:36:12 PM

1,807.0000

19

XCSE

Genmab A/S

26/06/2024

12:36:13 PM

1,807.0000

19

XCSE

Genmab A/S

26/06/2024

12:36:13 PM

1,807.0000

19

CEUX

Genmab A/S

26/06/2024

12:36:13 PM

1,807.0000

19

CEUX

Genmab A/S

26/06/2024

12:36:13 PM

1,807.0000

18

CEUX

Genmab A/S

26/06/2024

12:36:13 PM

1,807.0000

7

CEUX

Genmab A/S

26/06/2024

12:36:13 PM

1,807.0000

2

AQEU

Genmab A/S

26/06/2024

12:36:13 PM

1,807.0000

2

AQEU

Genmab A/S

26/06/2024

12:36:13 PM

1,807.0000

19

XCSE

Genmab A/S

26/06/2024

12:36:13 PM

1,807.0000

5

XCSE

Genmab A/S

26/06/2024

12:36:13 PM

1,807.0000

5

TQEX

Genmab A/S

26/06/2024

12:36:13 PM

1,807.0000

6

XCSE

Genmab A/S

26/06/2024

12:36:13 PM

1,807.0000

76

XCSE

Genmab A/S

26/06/2024

12:42:08 PM

1,803.0000

26

XCSE

Genmab A/S

26/06/2024

12:42:08 PM

1,803.0000

26

XCSE

Genmab A/S

26/06/2024

12:42:08 PM

1,803.0000

26

XCSE

Genmab A/S

26/06/2024

12:42:08 PM

1,803.0000

21

CEUX

Genmab A/S

26/06/2024

12:42:08 PM

1,803.0000

5

CEUX

Genmab A/S

26/06/2024

12:42:08 PM

1,803.0000

26

CEUX

Genmab A/S

26/06/2024

12:44:13 PM

1,803.5000

7

CEUX

Genmab A/S

26/06/2024

12:46:14 PM

1,804.5000

11

CEUX

Genmab A/S

26/06/2024

12:46:14 PM

1,804.5000

11

CEUX

Genmab A/S

26/06/2024

12:46:14 PM

1,804.5000

11

CEUX

Genmab A/S

26/06/2024

12:46:14 PM

1,804.5000

11

CEUX

Genmab A/S

26/06/2024

12:46:14 PM

1,804.5000

11

CEUX

Genmab A/S

26/06/2024

12:46:14 PM

1,804.5000

2

CEUX

Genmab A/S

26/06/2024

12:46:14 PM

1,804.5000

1

AQEU

146

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

12:46:14 PM

1,804.5000

4

CEUX

Genmab A/S

26/06/2024

12:46:14 PM

1,804.5000

74

TQEX

Genmab A/S

26/06/2024

12:46:14 PM

1,804.5000

5

TQEX

Genmab A/S

26/06/2024

12:46:14 PM

1,804.5000

10

XCSE

Genmab A/S

26/06/2024

12:46:14 PM

1,804.5000

21

XCSE

Genmab A/S

26/06/2024

12:46:14 PM

1,804.5000

5

TQEX

Genmab A/S

26/06/2024

12:46:14 PM

1,804.5000

36

TQEX

Genmab A/S

26/06/2024

12:46:14 PM

1,804.5000

7

CEUX

Genmab A/S

26/06/2024

12:46:14 PM

1,804.5000

11

CEUX

Genmab A/S

26/06/2024

12:46:14 PM

1,804.5000

11

CEUX

Genmab A/S

26/06/2024

12:46:14 PM

1,804.5000

11

CEUX

Genmab A/S

26/06/2024

12:46:14 PM

1,804.5000

6

CEUX

Genmab A/S

26/06/2024

12:46:14 PM

1,804.5000

11

CEUX

Genmab A/S

26/06/2024

12:46:14 PM

1,804.5000

9

CEUX

Genmab A/S

26/06/2024

12:46:14 PM

1,804.5000

1

CEUX

Genmab A/S

26/06/2024

12:46:14 PM

1,804.5000

10

XCSE

Genmab A/S

26/06/2024

12:46:14 PM

1,804.5000

21

XCSE

Genmab A/S

26/06/2024

12:46:14 PM

1,804.5000

10

XCSE

Genmab A/S

26/06/2024

12:46:14 PM

1,804.5000

21

XCSE

Genmab A/S

26/06/2024

12:48:32 PM

1,804.0000

54

XCSE

Genmab A/S

26/06/2024

12:48:32 PM

1,804.0000

50

XCSE

Genmab A/S

26/06/2024

12:48:32 PM

1,804.0000

49

CEUX

Genmab A/S

26/06/2024

12:48:32 PM

1,804.0000

46

CEUX

Genmab A/S

26/06/2024

12:48:32 PM

1,804.0000

7

AQEU

Genmab A/S

26/06/2024

12:48:32 PM

1,804.0000

8

TQEX

Genmab A/S

26/06/2024

12:48:32 PM

1,804.0000

8

TQEX

Genmab A/S

26/06/2024

12:48:32 PM

1,804.0000

33

TQEX

Genmab A/S

26/06/2024

12:48:32 PM

1,804.0000

34

TQEX

Genmab A/S

26/06/2024

12:48:32 PM

1,803.5000

48

XCSE

Genmab A/S

26/06/2024

12:48:32 PM

1,803.5000

36

XCSE

Genmab A/S

26/06/2024

12:48:32 PM

1,803.5000

37

XCSE

Genmab A/S

26/06/2024

12:48:32 PM

1,803.5000

5

XCSE

Genmab A/S

26/06/2024

12:48:32 PM

1,803.5000

5

XCSE

Genmab A/S

26/06/2024

12:48:32 PM

1,803.5000

5

XCSE

Genmab A/S

26/06/2024

12:48:32 PM

1,803.5000

25

XCSE

Genmab A/S

26/06/2024

12:48:32 PM

1,803.5000

13

XCSE

Genmab A/S

26/06/2024

12:48:32 PM

1,803.5000

42

XCSE

Genmab A/S

26/06/2024

12:48:33 PM

1,803.5000

11

XCSE

Genmab A/S

26/06/2024

12:48:33 PM

1,803.5000

42

XCSE

Genmab A/S

26/06/2024

12:50:25 PM

1,801.5000

48

XCSE

Genmab A/S

26/06/2024

12:50:25 PM

1,801.5000

48

XCSE

Genmab A/S

26/06/2024

12:50:25 PM

1,801.5000

34

CEUX

Genmab A/S

26/06/2024

12:50:25 PM

1,801.5000

48

XCSE

Genmab A/S

26/06/2024

12:50:25 PM

1,801.5000

18

XCSE

Genmab A/S

26/06/2024

12:50:25 PM

1,801.5000

11

XCSE

Genmab A/S

26/06/2024

12:59:10 PM

1,803.0000

39

CEUX

Genmab A/S

26/06/2024

12:59:10 PM

1,803.0000

3

CEUX

Genmab A/S

26/06/2024

12:59:10 PM

1,803.0000

3

CEUX

147

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

12:59:10 PM

1,803.0000

19

CEUX

Genmab A/S

26/06/2024

12:59:10 PM

1,803.0000

1

AQEU

Genmab A/S

26/06/2024

12:59:10 PM

1,803.0000

14

AQEU

Genmab A/S

26/06/2024

12:59:10 PM

1,803.0000

7

TQEX

Genmab A/S

26/06/2024

12:59:10 PM

1,803.0000

10

TQEX

Genmab A/S

26/06/2024

12:59:10 PM

1,803.0000

1

TQEX

Genmab A/S

26/06/2024

12:59:10 PM

1,803.0000

11

CEUX

Genmab A/S

26/06/2024

12:59:10 PM

1,803.0000

7

CEUX

Genmab A/S

26/06/2024

12:59:10 PM

1,803.0000

11

CEUX

Genmab A/S

26/06/2024

12:59:10 PM

1,803.0000

3

CEUX

Genmab A/S

26/06/2024

12:59:10 PM

1,803.0000

1

AQEU

Genmab A/S

26/06/2024

12:59:10 PM

1,803.0000

2

AQEU

Genmab A/S

26/06/2024

12:59:10 PM

1,803.0000

3

TQEX

Genmab A/S

26/06/2024

12:59:10 PM

1,803.0000

6

XCSE

Genmab A/S

26/06/2024

12:59:10 PM

1,803.0000

5

TQEX

Genmab A/S

26/06/2024

12:59:22 PM

1,802.5000

41

CEUX

Genmab A/S

26/06/2024

12:59:22 PM

1,802.5000

14

CEUX

Genmab A/S

26/06/2024

12:59:22 PM

1,802.5000

7

TQEX

Genmab A/S

26/06/2024

12:59:22 PM

1,802.5000

45

XCSE

Genmab A/S

26/06/2024

1:01:33 PM

1,802.0000

17

CEUX

Genmab A/S

26/06/2024

1:01:33 PM

1,802.0000

17

CEUX

Genmab A/S

26/06/2024

1:01:33 PM

1,802.0000

3

CEUX

Genmab A/S

26/06/2024

1:01:33 PM

1,802.0000

5

TQEX

Genmab A/S

26/06/2024

1:01:33 PM

1,802.0000

5

TQEX

Genmab A/S

26/06/2024

1:01:33 PM

1,802.0000

7

TQEX

Genmab A/S

26/06/2024

1:01:33 PM

1,802.0000

18

XCSE

Genmab A/S

26/06/2024

1:01:33 PM

1,802.0000

18

XCSE

Genmab A/S

26/06/2024

1:01:33 PM

1,802.0000

6

XCSE

Genmab A/S

26/06/2024

1:01:33 PM

1,802.0000

18

XCSE

Genmab A/S

26/06/2024

1:01:33 PM

1,802.0000

18

XCSE

Genmab A/S

26/06/2024

1:01:33 PM

1,802.0000

18

XCSE

Genmab A/S

26/06/2024

1:01:33 PM

1,802.0000

18

XCSE

Genmab A/S

26/06/2024

1:01:33 PM

1,802.0000

20

XCSE

Genmab A/S

26/06/2024

1:01:33 PM

1,802.0000

17

CEUX

Genmab A/S

26/06/2024

1:01:33 PM

1,802.0000

17

CEUX

Genmab A/S

26/06/2024

1:01:33 PM

1,802.0000

12

CEUX

Genmab A/S

26/06/2024

1:01:33 PM

1,802.0000

17

CEUX

Genmab A/S

26/06/2024

1:01:33 PM

1,802.0000

17

CEUX

Genmab A/S

26/06/2024

1:01:33 PM

1,802.0000

12

CEUX

Genmab A/S

26/06/2024

1:01:33 PM

1,802.0000

2

AQEU

Genmab A/S

26/06/2024

1:01:33 PM

1,802.0000

4

TQEX

Genmab A/S

26/06/2024

1:01:33 PM

1,802.0000

1

TQEX

Genmab A/S

26/06/2024

1:01:33 PM

1,802.0000

7

TQEX

Genmab A/S

26/06/2024

1:01:33 PM

1,802.0000

5

TQEX

Genmab A/S

26/06/2024

1:01:33 PM

1,802.0000

7

TQEX

Genmab A/S

26/06/2024

1:01:34 PM

1,802.0000

18

XCSE

Genmab A/S

26/06/2024

1:01:34 PM

1,802.0000

17

CEUX

Genmab A/S

26/06/2024

1:01:34 PM

1,802.0000

17

CEUX

148

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

1:01:34 PM

1,802.0000

12

CEUX

Genmab A/S

26/06/2024

1:01:35 PM

1,802.0000

5

TQEX

Genmab A/S

26/06/2024

1:01:35 PM

1,802.0000

18

XCSE

Genmab A/S

26/06/2024

1:01:35 PM

1,802.0000

24

XCSE

Genmab A/S

26/06/2024

1:01:35 PM

1,802.0000

24

XCSE

Genmab A/S

26/06/2024

1:01:35 PM

1,802.0000

18

XCSE

Genmab A/S

26/06/2024

1:01:35 PM

1,802.0000

13

XCSE

Genmab A/S

26/06/2024

1:06:11 PM

1,801.5000

62

XCSE

Genmab A/S

26/06/2024

1:06:11 PM

1,801.5000

23

CEUX

Genmab A/S

26/06/2024

1:06:11 PM

1,801.5000

32

CEUX

Genmab A/S

26/06/2024

1:06:11 PM

1,801.5000

52

CEUX

Genmab A/S

26/06/2024

1:06:11 PM

1,801.5000

4

AQEU

Genmab A/S

26/06/2024

1:06:11 PM

1,801.5000

4

AQEU

Genmab A/S

26/06/2024

1:06:11 PM

1,801.5000

8

AQEU

Genmab A/S

26/06/2024

1:06:11 PM

1,801.5000

8

AQEU

Genmab A/S

26/06/2024

1:06:11 PM

1,801.5000

8

AQEU

Genmab A/S

26/06/2024

1:06:11 PM

1,801.5000

8

AQEU

Genmab A/S

26/06/2024

1:06:11 PM

1,801.5000

4

AQEU

Genmab A/S

26/06/2024

1:06:11 PM

1,801.5000

9

TQEX

Genmab A/S

26/06/2024

1:06:11 PM

1,801.5000

9

TQEX

Genmab A/S

26/06/2024

1:06:11 PM

1,801.5000

9

TQEX

Genmab A/S

26/06/2024

1:06:11 PM

1,801.5000

9

TQEX

Genmab A/S

26/06/2024

1:06:11 PM

1,801.5000

8

AQEU

Genmab A/S

26/06/2024

1:06:11 PM

1,801.5000

45

XCSE

Genmab A/S

26/06/2024

1:06:11 PM

1,801.5000

9

XCSE

Genmab A/S

26/06/2024

1:06:11 PM

1,801.5000

2

XCSE

Genmab A/S

26/06/2024

1:06:11 PM

1,801.5000

2

CEUX

Genmab A/S

26/06/2024

1:06:12 PM

1,800.5000

35

XCSE

Genmab A/S

26/06/2024

1:06:12 PM

1,800.5000

8

XCSE

Genmab A/S

26/06/2024

1:08:59 PM

1,800.0000

47

XCSE

Genmab A/S

26/06/2024

1:08:59 PM

1,800.0000

19

XCSE

Genmab A/S

26/06/2024

1:08:59 PM

1,800.0000

75

XCSE

Genmab A/S

26/06/2024

1:08:59 PM

1,800.0000

44

XCSE

Genmab A/S

26/06/2024

1:08:59 PM

1,800.0000

19

XCSE

Genmab A/S

26/06/2024

1:08:59 PM

1,800.0000

4

XCSE

Genmab A/S

26/06/2024

1:08:59 PM

1,800.0000

2

AQEU

Genmab A/S

26/06/2024

1:08:59 PM

1,800.0000

12

AQEU

Genmab A/S

26/06/2024

1:08:59 PM

1,800.0000

2

AQEU

Genmab A/S

26/06/2024

1:08:59 PM

1,800.0000

5

TQEX

Genmab A/S

26/06/2024

1:08:59 PM

1,800.0000

9

TQEX

Genmab A/S

26/06/2024

1:08:59 PM

1,800.0000

7

XCSE

Genmab A/S

26/06/2024

1:12:42 PM

1,801.0000

41

XCSE

Genmab A/S

26/06/2024

1:12:42 PM

1,801.0000

38

CEUX

Genmab A/S

26/06/2024

1:12:42 PM

1,801.0000

5

TQEX

Genmab A/S

26/06/2024

1:16:06 PM

1,801.5000

36

CEUX

Genmab A/S

26/06/2024

1:16:06 PM

1,801.5000

24

XCSE

Genmab A/S

26/06/2024

1:17:32 PM

1,802.0000

38

AQEU

Genmab A/S

26/06/2024

1:18:04 PM

1,802.0000

13

CEUX

149

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

1:18:04 PM

1,802.0000

3

CEUX

Genmab A/S

26/06/2024

1:18:04 PM

1,802.0000

23

CEUX

Genmab A/S

26/06/2024

1:18:04 PM

1,802.0000

2

CEUX

Genmab A/S

26/06/2024

1:18:33 PM

1,802.0000

39

CEUX

Genmab A/S

26/06/2024

1:18:44 PM

1,801.5000

1

AQEU

Genmab A/S

26/06/2024

1:18:49 PM

1,801.5000

80

XCSE

Genmab A/S

26/06/2024

1:18:49 PM

1,801.5000

53

XCSE

Genmab A/S

26/06/2024

1:18:49 PM

1,801.5000

64

CEUX

Genmab A/S

26/06/2024

1:18:49 PM

1,801.0000

10

TQEX

Genmab A/S

26/06/2024

1:18:49 PM

1,801.0000

13

CEUX

Genmab A/S

26/06/2024

1:18:49 PM

1,801.5000

2

AQEU

Genmab A/S

26/06/2024

1:18:49 PM

1,801.5000

2

AQEU

Genmab A/S

26/06/2024

1:18:49 PM

1,801.5000

9

AQEU

Genmab A/S

26/06/2024

1:18:49 PM

1,801.5000

30

XCSE

Genmab A/S

26/06/2024

1:18:49 PM

1,801.5000

47

XCSE

Genmab A/S

26/06/2024

1:18:50 PM

1,801.0000

70

XCSE

Genmab A/S

26/06/2024

1:18:50 PM

1,801.0000

51

XCSE

Genmab A/S

26/06/2024

1:18:50 PM

1,801.0000

50

CEUX

Genmab A/S

26/06/2024

1:18:50 PM

1,801.0000

9

AQEU

Genmab A/S

26/06/2024

1:18:50 PM

1,801.0000

51

XCSE

Genmab A/S

26/06/2024

1:18:50 PM

1,801.0000

3

XCSE

Genmab A/S

26/06/2024

1:18:50 PM

1,801.0000

1

XCSE

Genmab A/S

26/06/2024

1:18:50 PM

1,801.0000

35

XCSE

Genmab A/S

26/06/2024

1:20:23 PM

1,800.0000

2

AQEU

Genmab A/S

26/06/2024

1:20:23 PM

1,800.0000

2

AQEU

Genmab A/S

26/06/2024

1:20:23 PM

1,800.0000

2

AQEU

Genmab A/S

26/06/2024

1:20:23 PM

1,800.0000

1

AQEU

Genmab A/S

26/06/2024

1:20:23 PM

1,800.0000

5

TQEX

Genmab A/S

26/06/2024

1:20:23 PM

1,800.0000

19

CEUX

Genmab A/S

26/06/2024

1:20:23 PM

1,800.0000

20

XCSE

Genmab A/S

26/06/2024

1:20:23 PM

1,800.0000

26

XCSE

Genmab A/S

26/06/2024

1:20:23 PM

1,800.0000

14

CEUX

Genmab A/S

26/06/2024

1:20:23 PM

1,800.0000

2

AQEU

Genmab A/S

26/06/2024

1:20:23 PM

1,800.0000

2

AQEU

Genmab A/S

26/06/2024

1:20:23 PM

1,800.0000

4

TQEX

Genmab A/S

26/06/2024

1:20:23 PM

1,800.0000

1

TQEX

Genmab A/S

26/06/2024

1:20:23 PM

1,800.0000

2

AQEU

Genmab A/S

26/06/2024

1:20:23 PM

1,800.0000

1

AQEU

Genmab A/S

26/06/2024

1:20:23 PM

1,800.0000

2

AQEU

Genmab A/S

26/06/2024

1:22:46 PM

1,801.0000

4

XCSE

Genmab A/S

26/06/2024

1:24:22 PM

1,802.5000

21

CEUX

Genmab A/S

26/06/2024

1:24:22 PM

1,802.5000

5

TQEX

Genmab A/S

26/06/2024

1:26:51 PM

1,803.5000

8

AQEU

Genmab A/S

26/06/2024

1:27:55 PM

1,804.0000

13

CEUX

Genmab A/S

26/06/2024

1:27:55 PM

1,804.0000

12

CEUX

Genmab A/S

26/06/2024

1:28:13 PM

1,804.0000

34

CEUX

Genmab A/S

26/06/2024

1:28:13 PM

1,803.5000

43

CEUX

Genmab A/S

26/06/2024

1:28:13 PM

1,803.5000

42

CEUX

150

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

1:28:13 PM

1,803.5000

8

AQEU

Genmab A/S

26/06/2024

1:28:13 PM

1,803.5000

4

AQEU

Genmab A/S

26/06/2024

1:28:13 PM

1,803.5000

13

TQEX

Genmab A/S

26/06/2024

1:28:13 PM

1,803.0000

47

XCSE

Genmab A/S

26/06/2024

1:28:13 PM

1,803.0000

2

XCSE

Genmab A/S

26/06/2024

1:28:13 PM

1,803.0000

44

XCSE

Genmab A/S

26/06/2024

1:28:13 PM

1,803.0000

47

XCSE

Genmab A/S

26/06/2024

1:28:13 PM

1,803.0000

23

XCSE

Genmab A/S

26/06/2024

1:28:13 PM

1,803.0000

23

XCSE

Genmab A/S

26/06/2024

1:28:13 PM

1,803.0000

21

XCSE

Genmab A/S

26/06/2024

1:28:13 PM

1,803.5000

12

XCSE

Genmab A/S

26/06/2024

1:28:13 PM

1,803.5000

83

XCSE

Genmab A/S

26/06/2024

1:28:13 PM

1,803.5000

28

XCSE

Genmab A/S

26/06/2024

1:28:13 PM

1,803.5000

22

XCSE

Genmab A/S

26/06/2024

1:28:13 PM

1,803.5000

12

XCSE

Genmab A/S

26/06/2024

1:28:13 PM

1,803.5000

103

XCSE

Genmab A/S

26/06/2024

1:28:13 PM

1,803.0000

20

XCSE

Genmab A/S

26/06/2024

1:28:13 PM

1,803.0000

46

XCSE

Genmab A/S

26/06/2024

1:28:13 PM

1,803.0000

8

XCSE

Genmab A/S

26/06/2024

1:35:10 PM

1,801.0000

1

AQEU

Genmab A/S

26/06/2024

1:36:26 PM

1,801.5000

6

TQEX

Genmab A/S

26/06/2024

1:36:40 PM

1,801.5000

8

CEUX

Genmab A/S

26/06/2024

1:38:13 PM

1,802.5000

3

CEUX

Genmab A/S

26/06/2024

1:38:13 PM

1,802.5000

16

CEUX

Genmab A/S

26/06/2024

1:38:13 PM

1,802.5000

3

CEUX

Genmab A/S

26/06/2024

1:38:13 PM

1,802.5000

19

CEUX

Genmab A/S

26/06/2024

1:38:13 PM

1,802.5000

5

TQEX

Genmab A/S

26/06/2024

1:38:13 PM

1,802.5000

5

TQEX

Genmab A/S

26/06/2024

1:38:13 PM

1,802.5000

5

TQEX

Genmab A/S

26/06/2024

1:38:13 PM

1,802.5000

21

XCSE

Genmab A/S

26/06/2024

1:38:13 PM

1,802.5000

21

XCSE

Genmab A/S

26/06/2024

1:38:13 PM

1,802.5000

6

CEUX

Genmab A/S

26/06/2024

1:38:13 PM

1,802.5000

5

TQEX

Genmab A/S

26/06/2024

1:38:14 PM

1,802.5000

35

CEUX

Genmab A/S

26/06/2024

1:38:26 PM

1,802.5000

4

CEUX

Genmab A/S

26/06/2024

1:38:26 PM

1,802.5000

4

CEUX

Genmab A/S

26/06/2024

1:38:26 PM

1,802.5000

20

CEUX

Genmab A/S

26/06/2024

1:38:26 PM

1,802.5000

8

CEUX

Genmab A/S

26/06/2024

1:38:26 PM

1,802.5000

1

CEUX

Genmab A/S

26/06/2024

1:38:50 PM

1,802.5000

39

CEUX

Genmab A/S

26/06/2024

1:39:16 PM

1,802.5000

7

CEUX

Genmab A/S

26/06/2024

1:39:16 PM

1,802.5000

29

CEUX

Genmab A/S

26/06/2024

1:39:27 PM

1,801.5000

5

AQEU

Genmab A/S

26/06/2024

1:39:38 PM

1,801.5000

31

CEUX

Genmab A/S

26/06/2024

1:39:38 PM

1,801.5000

33

CEUX

Genmab A/S

26/06/2024

1:39:38 PM

1,801.5000

33

CEUX

Genmab A/S

26/06/2024

1:39:38 PM

1,801.5000

18

CEUX

Genmab A/S

26/06/2024

1:39:38 PM

1,801.5000

5

TQEX

151

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

1:39:38 PM

1,801.5000

5

TQEX

Genmab A/S

26/06/2024

1:39:38 PM

1,801.5000

37

XCSE

Genmab A/S

26/06/2024

1:39:38 PM

1,801.5000

6

XCSE

Genmab A/S

26/06/2024

1:39:38 PM

1,801.5000

5

XCSE

Genmab A/S

26/06/2024

1:39:38 PM

1,801.5000

26

XCSE

Genmab A/S

26/06/2024

1:41:00 PM

1,801.5000

31

CEUX

Genmab A/S

26/06/2024

1:41:01 PM

1,801.5000

2

CEUX

Genmab A/S

26/06/2024

1:41:01 PM

1,801.5000

1

CEUX

Genmab A/S

26/06/2024

1:41:01 PM

1,801.5000

5

TQEX

Genmab A/S

26/06/2024

1:41:01 PM

1,801.5000

5

TQEX

Genmab A/S

26/06/2024

1:41:01 PM

1,801.5000

20

XCSE

Genmab A/S

26/06/2024

1:41:01 PM

1,801.5000

6

XCSE

Genmab A/S

26/06/2024

1:41:01 PM

1,801.5000

11

XCSE

Genmab A/S

26/06/2024

1:41:01 PM

1,801.5000

9

XCSE

Genmab A/S

26/06/2024

1:41:01 PM

1,801.5000

6

XCSE

Genmab A/S

26/06/2024

1:41:01 PM

1,801.5000

20

XCSE

Genmab A/S

26/06/2024

1:41:01 PM

1,801.5000

25

XCSE

Genmab A/S

26/06/2024

1:41:01 PM

1,801.5000

1

XCSE

Genmab A/S

26/06/2024

1:41:01 PM

1,801.5000

9

XCSE

Genmab A/S

26/06/2024

1:41:01 PM

1,801.5000

5

TQEX

Genmab A/S

26/06/2024

1:41:01 PM

1,801.5000

5

TQEX

Genmab A/S

26/06/2024

1:41:42 PM

1,801.0000

41

CEUX

Genmab A/S

26/06/2024

1:41:42 PM

1,801.0000

17

CEUX

Genmab A/S

26/06/2024

1:44:43 PM

1,802.0000

8

XCSE

Genmab A/S

26/06/2024

1:44:53 PM

1,802.0000

8

XCSE

Genmab A/S

26/06/2024

1:44:53 PM

1,802.0000

7

XCSE

Genmab A/S

26/06/2024

1:45:00 PM

1,802.0000

7

XCSE

Genmab A/S

26/06/2024

1:45:00 PM

1,802.0000

8

XCSE

Genmab A/S

26/06/2024

1:45:00 PM

1,802.0000

12

XCSE

Genmab A/S

26/06/2024

1:45:00 PM

1,802.0000

5

XCSE

Genmab A/S

26/06/2024

1:45:19 PM

1,802.0000

30

XCSE

Genmab A/S

26/06/2024

1:45:19 PM

1,802.0000

6

XCSE

Genmab A/S

26/06/2024

1:45:43 PM

1,802.0000

2

XCSE

Genmab A/S

26/06/2024

1:45:43 PM

1,802.0000

30

XCSE

Genmab A/S

26/06/2024

1:45:43 PM

1,802.0000

4

XCSE

Genmab A/S

26/06/2024

1:46:05 PM

1,802.0000

2

XCSE

Genmab A/S

26/06/2024

1:46:05 PM

1,802.0000

30

XCSE

Genmab A/S

26/06/2024

1:46:05 PM

1,802.0000

5

XCSE

Genmab A/S

26/06/2024

1:46:32 PM

1,801.5000

34

CEUX

Genmab A/S

26/06/2024

1:47:00 PM

1,802.0000

13

XCSE

Genmab A/S

26/06/2024

1:47:12 PM

1,802.0000

7

XCSE

Genmab A/S

26/06/2024

1:47:12 PM

1,802.0000

6

XCSE

Genmab A/S

26/06/2024

1:47:23 PM

1,802.0000

7

XCSE

Genmab A/S

26/06/2024

1:47:31 PM

1,802.0000

36

XCSE

Genmab A/S

26/06/2024

1:47:46 PM

1,802.5000

14

AQEU

Genmab A/S

26/06/2024

1:47:46 PM

1,802.5000

10

AQEU

Genmab A/S

26/06/2024

1:48:05 PM

1,802.5000

2

AQEU

Genmab A/S

26/06/2024

1:48:05 PM

1,802.5000

2

AQEU

152

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

1:48:13 PM

1,802.5000

2

AQEU

Genmab A/S

26/06/2024

1:48:13 PM

1,802.5000

1

AQEU

Genmab A/S

26/06/2024

1:48:13 PM

1,802.5000

9

AQEU

Genmab A/S

26/06/2024

1:48:20 PM

1,802.5000

1

AQEU

Genmab A/S

26/06/2024

1:48:20 PM

1,802.5000

2

AQEU

Genmab A/S

26/06/2024

1:48:32 PM

1,802.5000

1

AQEU

Genmab A/S

26/06/2024

1:48:32 PM

1,802.5000

2

AQEU

Genmab A/S

26/06/2024

1:48:32 PM

1,802.5000

9

AQEU

Genmab A/S

26/06/2024

1:48:37 PM

1,801.5000

10

CEUX

Genmab A/S

26/06/2024

1:48:37 PM

1,801.5000

5

TQEX

Genmab A/S

26/06/2024

1:48:42 PM

1,802.0000

2

AQEU

Genmab A/S

26/06/2024

1:48:42 PM

1,802.0000

1

AQEU

Genmab A/S

26/06/2024

1:51:44 PM

1,802.0000

18

XCSE

Genmab A/S

26/06/2024

1:51:45 PM

1,802.0000

2

AQEU

Genmab A/S

26/06/2024

1:51:45 PM

1,802.0000

2

AQEU

Genmab A/S

26/06/2024

1:51:45 PM

1,802.0000

8

XCSE

Genmab A/S

26/06/2024

1:51:45 PM

1,802.0000

7

XCSE

Genmab A/S

26/06/2024

1:51:46 PM

1,801.5000

8

CEUX

Genmab A/S

26/06/2024

1:51:46 PM

1,801.5000

1

CEUX

Genmab A/S

26/06/2024

1:51:46 PM

1,801.5000

1

AQEU

Genmab A/S

26/06/2024

1:51:46 PM

1,801.5000

4

TQEX

Genmab A/S

26/06/2024

1:51:46 PM

1,802.0000

1

XCSE

Genmab A/S

26/06/2024

1:51:46 PM

1,802.0000

2

XCSE

Genmab A/S

26/06/2024

1:51:47 PM

1,802.0000

8

XCSE

Genmab A/S

26/06/2024

1:52:18 PM

1,801.5000

9

CEUX

Genmab A/S

26/06/2024

1:52:18 PM

1,801.5000

5

TQEX

Genmab A/S

26/06/2024

1:52:18 PM

1,801.5000

9

XCSE

Genmab A/S

26/06/2024

1:53:22 PM

1,802.5000

6

CEUX

Genmab A/S

26/06/2024

1:53:22 PM

1,802.5000

41

CEUX

Genmab A/S

26/06/2024

1:53:22 PM

1,802.5000

4

CEUX

Genmab A/S

26/06/2024

1:53:22 PM

1,802.5000

6

CEUX

Genmab A/S

26/06/2024

1:53:22 PM

1,802.5000

12

CEUX

Genmab A/S

26/06/2024

1:53:23 PM

1,802.5000

14

CEUX

Genmab A/S

26/06/2024

1:53:23 PM

1,802.5000

13

CEUX

Genmab A/S

26/06/2024

1:54:26 PM

1,802.5000

3

CEUX

Genmab A/S

26/06/2024

1:55:28 PM

1,803.0000

4

CEUX

Genmab A/S

26/06/2024

1:55:28 PM

1,803.0000

14

CEUX

Genmab A/S

26/06/2024

1:55:28 PM

1,803.0000

16

CEUX

Genmab A/S

26/06/2024

1:55:28 PM

1,803.0000

15

CEUX

Genmab A/S

26/06/2024

1:55:28 PM

1,803.0000

4

CEUX

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

21

XCSE

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

75

XCSE

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

15

XCSE

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

6

XCSE

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

75

XCSE

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

15

XCSE

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

81

XCSE

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

8

XCSE

153

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

3

XCSE

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

20

CEUX

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

64

CEUX

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

4

CEUX

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

20

CEUX

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

26

CEUX

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

46

CEUX

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

4

CEUX

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

16

CEUX

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

20

CEUX

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

3

CEUX

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

9

CEUX

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

11

CEUX

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

20

CEUX

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

11

CEUX

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

2

AQEU

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

9

AQEU

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

1

AQEU

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

2

AQEU

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

7

AQEU

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

10

AQEU

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

2

AQEU

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

1

AQEU

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

3

AQEU

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

2

AQEU

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

2

AQEU

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

4

AQEU

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

2

AQEU

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

2

AQEU

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

2

AQEU

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

5

TQEX

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

9

TQEX

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

10

TQEX

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

5

TQEX

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

1

TQEX

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

5

TQEX

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

5

TQEX

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

1

TQEX

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

4

TQEX

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

10

TQEX

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

5

TQEX

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

5

TQEX

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

5

TQEX

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

9

TQEX

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

5

TQEX

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

3

TQEX

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

23

XCSE

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

7

XCSE

154

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

1:55:42 PM

1,802.5000

12

XCSE

Genmab A/S

26/06/2024

1:58:24 PM

1,801.0000

1

AQEU

Genmab A/S

26/06/2024

1:59:20 PM

1,801.0000

13

CEUX

Genmab A/S

26/06/2024

2:00:03 PM

1,801.5000

38

TQEX

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

76

CEUX

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

10

CEUX

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

8

CEUX

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

10

CEUX

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

8

CEUX

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

7

AQEU

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

4

AQEU

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

10

CEUX

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

8

CEUX

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

13

TQEX

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

5

TQEX

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

5

TQEX

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

9

TQEX

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

9

TQEX

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

1

AQEU

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

1

AQEU

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

83

XCSE

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

15

XCSE

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

9

XCSE

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

7

XCSE

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

9

XCSE

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

7

XCSE

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

36

XCSE

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

2

XCSE

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

37

XCSE

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

10

CEUX

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

8

CEUX

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

10

CEUX

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

8

CEUX

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

2

CEUX

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

7

CEUX

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

1

AQEU

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

1

AQEU

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

5

AQEU

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

5

TQEX

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

5

TQEX

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

10

TQEX

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

10

TQEX

Genmab A/S

26/06/2024

2:00:25 PM

1,800.5000

22

CEUX

Genmab A/S

26/06/2024

2:00:25 PM

1,800.5000

22

CEUX

Genmab A/S

26/06/2024

2:00:25 PM

1,800.5000

4

AQEU

Genmab A/S

26/06/2024

2:00:25 PM

1,800.5000

4

AQEU

Genmab A/S

26/06/2024

2:00:25 PM

1,800.5000

4

AQEU

Genmab A/S

26/06/2024

2:00:25 PM

1,800.5000

4

AQEU

155

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

2:00:25 PM

1,800.5000

4

AQEU

Genmab A/S

26/06/2024

2:00:25 PM

1,800.5000

4

AQEU

Genmab A/S

26/06/2024

2:00:25 PM

1,800.5000

4

AQEU

Genmab A/S

26/06/2024

2:00:25 PM

1,800.5000

22

CEUX

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

10

TQEX

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

10

TQEX

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

35

TQEX

Genmab A/S

26/06/2024

2:00:25 PM

1,800.5000

25

XCSE

Genmab A/S

26/06/2024

2:00:25 PM

1,800.5000

23

XCSE

Genmab A/S

26/06/2024

2:00:25 PM

1,800.5000

2

XCSE

Genmab A/S

26/06/2024

2:00:25 PM

1,800.5000

34

XCSE

Genmab A/S

26/06/2024

2:00:25 PM

1,800.5000

5

XCSE

Genmab A/S

26/06/2024

2:00:25 PM

1,800.5000

24

XCSE

Genmab A/S

26/06/2024

2:00:25 PM

1,801.0000

30

XCSE

Genmab A/S

26/06/2024

2:00:25 PM

1,800.5000

11

CEUX

Genmab A/S

26/06/2024

2:00:25 PM

1,800.5000

4

AQEU

Genmab A/S

26/06/2024

2:00:25 PM

1,800.5000

1

AQEU

Genmab A/S

26/06/2024

2:00:25 PM

1,800.5000

4

AQEU

Genmab A/S

26/06/2024

2:00:25 PM

1,800.5000

7

XCSE

Genmab A/S

26/06/2024

2:09:24 PM

1,801.5000

5

AQEU

Genmab A/S

26/06/2024

2:09:24 PM

1,801.5000

3

AQEU

Genmab A/S

26/06/2024

2:09:25 PM

1,801.5000

4

AQEU

Genmab A/S

26/06/2024

2:09:57 PM

1,802.0000

13

CEUX

Genmab A/S

26/06/2024

2:09:57 PM

1,802.0000

1

CEUX

Genmab A/S

26/06/2024

2:09:57 PM

1,802.0000

3

CEUX

Genmab A/S

26/06/2024

2:09:57 PM

1,802.0000

18

CEUX

Genmab A/S

26/06/2024

2:09:57 PM

1,802.0000

60

CEUX

Genmab A/S

26/06/2024

2:09:57 PM

1,802.0000

25

CEUX

Genmab A/S

26/06/2024

2:10:24 PM

1,801.5000

1

AQEU

Genmab A/S

26/06/2024

2:10:24 PM

1,801.5000

1

AQEU

Genmab A/S

26/06/2024

2:10:24 PM

1,801.5000

1

AQEU

Genmab A/S

26/06/2024

2:10:24 PM

1,801.5000

1

AQEU

Genmab A/S

26/06/2024

2:10:25 PM

1,801.5000

6

AQEU

Genmab A/S

26/06/2024

2:10:30 PM

1,802.0000

37

CEUX

Genmab A/S

26/06/2024

2:10:55 PM

1,802.0000

14

CEUX

Genmab A/S

26/06/2024

2:10:55 PM

1,802.0000

3

CEUX

Genmab A/S

26/06/2024

2:10:55 PM

1,802.0000

10

CEUX

Genmab A/S

26/06/2024

2:10:55 PM

1,802.0000

8

TQEX

Genmab A/S

26/06/2024

2:11:26 PM

1,802.0000

3

TQEX

Genmab A/S

26/06/2024

2:11:26 PM

1,802.0000

8

XCSE

Genmab A/S

26/06/2024

2:11:26 PM

1,802.0000

18

CEUX

Genmab A/S

26/06/2024

2:11:54 PM

1,802.5000

33

XCSE

Genmab A/S

26/06/2024

2:11:54 PM

1,802.5000

2

AQEU

Genmab A/S

26/06/2024

2:11:54 PM

1,802.5000

1

AQEU

Genmab A/S

26/06/2024

2:11:54 PM

1,802.5000

25

TQEX

Genmab A/S

26/06/2024

2:11:54 PM

1,802.5000

1

TQEX

Genmab A/S

26/06/2024

2:11:54 PM

1,802.5000

7

TQEX

Genmab A/S

26/06/2024

2:12:08 PM

1,802.5000

10

CEUX

156

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

2:12:08 PM

1,802.5000

3

CEUX

Genmab A/S

26/06/2024

2:12:08 PM

1,802.5000

2

AQEU

Genmab A/S

26/06/2024

2:12:08 PM

1,802.5000

31

XCSE

Genmab A/S

26/06/2024

2:12:08 PM

1,802.5000

30

XCSE

Genmab A/S

26/06/2024

2:12:08 PM

1,802.5000

30

XCSE

Genmab A/S

26/06/2024

2:12:08 PM

1,802.5000

1

AQEU

Genmab A/S

26/06/2024

2:12:08 PM

1,802.5000

1

AQEU

Genmab A/S

26/06/2024

2:12:08 PM

1,802.5000

11

CEUX

Genmab A/S

26/06/2024

2:12:08 PM

1,802.5000

11

AQEU

Genmab A/S

26/06/2024

2:12:08 PM

1,802.5000

1

AQEU

Genmab A/S

26/06/2024

2:12:08 PM

1,802.5000

1

AQEU

Genmab A/S

26/06/2024

2:12:08 PM

1,802.5000

47

CEUX

Genmab A/S

26/06/2024

2:12:08 PM

1,802.5000

4

XCSE

Genmab A/S

26/06/2024

2:12:08 PM

1,802.5000

2

XCSE

Genmab A/S

26/06/2024

2:12:19 PM

1,802.5000

50

CEUX

Genmab A/S

26/06/2024

2:12:19 PM

1,802.5000

30

CEUX

Genmab A/S

26/06/2024

2:12:19 PM

1,802.5000

80

CEUX

Genmab A/S

26/06/2024

2:12:19 PM

1,802.5000

35

CEUX

Genmab A/S

26/06/2024

2:12:19 PM

1,802.5000

11

AQEU

Genmab A/S

26/06/2024

2:12:19 PM

1,802.5000

1

AQEU

Genmab A/S

26/06/2024

2:12:19 PM

1,802.5000

50

XCSE

Genmab A/S

26/06/2024

2:12:19 PM

1,802.5000

38

XCSE

Genmab A/S

26/06/2024

2:12:19 PM

1,802.5000

9

XCSE

Genmab A/S

26/06/2024

2:12:19 PM

1,802.5000

38

XCSE

Genmab A/S

26/06/2024

2:12:19 PM

1,802.5000

38

XCSE

Genmab A/S

26/06/2024

2:12:19 PM

1,802.5000

38

XCSE

Genmab A/S

26/06/2024

2:12:19 PM

1,802.5000

50

XCSE

Genmab A/S

26/06/2024

2:12:19 PM

1,802.5000

38

XCSE

Genmab A/S

26/06/2024

2:12:19 PM

1,802.5000

45

CEUX

Genmab A/S

26/06/2024

2:12:19 PM

1,802.5000

9

CEUX

Genmab A/S

26/06/2024

2:12:19 PM

1,802.5000

62

CEUX

Genmab A/S

26/06/2024

2:12:19 PM

1,802.5000

20

CEUX

Genmab A/S

26/06/2024

2:12:19 PM

1,802.5000

4

CEUX

Genmab A/S

26/06/2024

2:18:49 PM

1,798.0000

12

CEUX

Genmab A/S

26/06/2024

2:20:03 PM

1,798.0000

12

CEUX

Genmab A/S

26/06/2024

2:20:03 PM

1,798.0000

8

CEUX

Genmab A/S

26/06/2024

2:20:03 PM

1,798.0000

12

CEUX

Genmab A/S

26/06/2024

2:20:03 PM

1,798.0000

5

CEUX

Genmab A/S

26/06/2024

2:20:03 PM

1,798.0000

1

AQEU

Genmab A/S

26/06/2024

2:20:03 PM

1,798.0000

1

AQEU

Genmab A/S

26/06/2024

2:20:03 PM

1,798.0000

5

TQEX

Genmab A/S

26/06/2024

2:20:03 PM

1,798.0000

5

TQEX

Genmab A/S

26/06/2024

2:20:03 PM

1,798.0000

5

TQEX

Genmab A/S

26/06/2024

2:20:03 PM

1,798.0000

2

TQEX

Genmab A/S

26/06/2024

2:20:03 PM

1,798.0000

1

TQEX

Genmab A/S

26/06/2024

2:20:03 PM

1,798.0000

5

TQEX

Genmab A/S

26/06/2024

2:20:03 PM

1,798.0000

5

TQEX

Genmab A/S

26/06/2024

2:20:03 PM

1,798.0000

4

TQEX

157

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

2:20:03 PM

1,798.0000

3

TQEX

Genmab A/S

26/06/2024

2:20:03 PM

1,798.0000

1

XCSE

Genmab A/S

26/06/2024

2:20:03 PM

1,798.0000

10

XCSE

Genmab A/S

26/06/2024

2:20:03 PM

1,798.0000

8

XCSE

Genmab A/S

26/06/2024

2:20:03 PM

1,798.0000

12

XCSE

Genmab A/S

26/06/2024

2:20:03 PM

1,798.0000

11

XCSE

Genmab A/S

26/06/2024

2:20:03 PM

1,798.0000

8

XCSE

Genmab A/S

26/06/2024

2:20:03 PM

1,798.0000

11

XCSE

Genmab A/S

26/06/2024

2:20:03 PM

1,798.0000

8

XCSE

Genmab A/S

26/06/2024

2:20:03 PM

1,798.0000

9

XCSE

Genmab A/S

26/06/2024

2:20:03 PM

1,798.0000

9

XCSE

Genmab A/S

26/06/2024

2:20:04 PM

1,798.0000

8

XCSE

Genmab A/S

26/06/2024

2:20:04 PM

1,798.0000

8

XCSE

Genmab A/S

26/06/2024

2:20:05 PM

1,798.0000

8

XCSE

Genmab A/S

26/06/2024

2:20:08 PM

1,798.0000

1

AQEU

Genmab A/S

26/06/2024

2:20:08 PM

1,798.0000

20

AQEU

Genmab A/S

26/06/2024

2:20:08 PM

1,798.0000

3

CEUX

Genmab A/S

26/06/2024

2:20:08 PM

1,798.0000

7

CEUX

Genmab A/S

26/06/2024

2:20:08 PM

1,798.0000

9

AQEU

Genmab A/S

26/06/2024

2:20:08 PM

1,798.0000

1

AQEU

Genmab A/S

26/06/2024

2:20:10 PM

1,798.0000

29

AQEU

Genmab A/S

26/06/2024

2:24:04 PM

1,799.5000

16

CEUX

Genmab A/S

26/06/2024

2:24:04 PM

1,799.5000

9

CEUX

Genmab A/S

26/06/2024

2:24:04 PM

1,799.5000

2

TQEX

Genmab A/S

26/06/2024

2:24:04 PM

1,799.5000

13

XCSE

Genmab A/S

26/06/2024

2:24:30 PM

1,799.0000

41

CEUX

Genmab A/S

26/06/2024

2:24:52 PM

1,799.5000

1

TQEX

Genmab A/S

26/06/2024

2:24:52 PM

1,799.5000

1

TQEX

Genmab A/S

26/06/2024

2:24:52 PM

1,799.5000

6

XCSE

Genmab A/S

26/06/2024

2:24:52 PM

1,799.5000

1

TQEX

Genmab A/S

26/06/2024

2:24:52 PM

1,799.5000

1

TQEX

Genmab A/S

26/06/2024

2:24:52 PM

1,799.5000

2

TQEX

Genmab A/S

26/06/2024

2:24:52 PM

1,799.5000

7

XCSE

Genmab A/S

26/06/2024

2:24:52 PM

1,799.5000

6

XCSE

Genmab A/S

26/06/2024

2:25:06 PM

1,799.5000

1

TQEX

Genmab A/S

26/06/2024

2:25:06 PM

1,799.5000

1

TQEX

Genmab A/S

26/06/2024

2:25:06 PM

1,799.5000

8

XCSE

Genmab A/S

26/06/2024

2:25:06 PM

1,799.5000

7

XCSE

Genmab A/S

26/06/2024

2:25:06 PM

1,799.5000

17

XCSE

Genmab A/S

26/06/2024

2:25:29 PM

1,799.5000

1

TQEX

Genmab A/S

26/06/2024

2:25:29 PM

1,799.5000

2

TQEX

Genmab A/S

26/06/2024

2:25:29 PM

1,799.5000

13

XCSE

Genmab A/S

26/06/2024

2:25:29 PM

1,799.5000

6

XCSE

Genmab A/S

26/06/2024

2:25:37 PM

1,799.5000

1

TQEX

Genmab A/S

26/06/2024

2:25:37 PM

1,799.5000

2

TQEX

Genmab A/S

26/06/2024

2:25:37 PM

1,799.5000

30

XCSE

Genmab A/S

26/06/2024

2:25:37 PM

1,799.5000

4

XCSE

Genmab A/S

26/06/2024

2:26:06 PM

1,799.5000

2

TQEX

158

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

2:26:06 PM

1,799.5000

1

TQEX

Genmab A/S

26/06/2024

2:26:06 PM

1,799.5000

2

TQEX

Genmab A/S

26/06/2024

2:26:18 PM

1,799.0000

8

TQEX

Genmab A/S

26/06/2024

2:26:18 PM

1,799.0000

53

CEUX

Genmab A/S

26/06/2024

2:26:18 PM

1,799.0000

7

CEUX

Genmab A/S

26/06/2024

2:26:18 PM

1,799.0000

45

CEUX

Genmab A/S

26/06/2024

2:26:18 PM

1,799.0000

53

CEUX

Genmab A/S

26/06/2024

2:26:18 PM

1,799.0000

52

CEUX

Genmab A/S

26/06/2024

2:26:18 PM

1,799.0000

20

CEUX

Genmab A/S

26/06/2024

2:26:18 PM

1,799.0000

20

CEUX

Genmab A/S

26/06/2024

2:26:18 PM

1,799.0000

8

AQEU

Genmab A/S

26/06/2024

2:26:18 PM

1,799.0000

8

AQEU

Genmab A/S

26/06/2024

2:26:18 PM

1,799.0000

8

TQEX

Genmab A/S

26/06/2024

2:26:18 PM

1,799.0000

59

XCSE

Genmab A/S

26/06/2024

2:26:18 PM

1,799.0000

58

XCSE

Genmab A/S

26/06/2024

2:26:18 PM

1,799.0000

50

XCSE

Genmab A/S

26/06/2024

2:26:18 PM

1,799.0000

29

XCSE

Genmab A/S

26/06/2024

2:26:18 PM

1,799.0000

21

XCSE

Genmab A/S

26/06/2024

2:26:18 PM

1,799.0000

6

XCSE

Genmab A/S

26/06/2024

2:26:18 PM

1,799.0000

15

XCSE

Genmab A/S

26/06/2024

2:26:18 PM

1,799.0000

17

XCSE

Genmab A/S

26/06/2024

2:26:18 PM

1,799.0000

9

XCSE

Genmab A/S

26/06/2024

2:26:18 PM

1,799.0000

11

XCSE

Genmab A/S

26/06/2024

2:26:18 PM

1,799.0000

41

XCSE

Genmab A/S

26/06/2024

2:26:18 PM

1,799.0000

58

XCSE

Genmab A/S

26/06/2024

2:26:18 PM

1,799.0000

8

TQEX

Genmab A/S

26/06/2024

2:26:18 PM

1,799.0000

8

TQEX

Genmab A/S

26/06/2024

2:26:19 PM

1,799.0000

19

XCSE

Genmab A/S

26/06/2024

2:26:19 PM

1,799.0000

36

XCSE

Genmab A/S

26/06/2024

2:26:19 PM

1,799.0000

11

CEUX

Genmab A/S

26/06/2024

2:26:19 PM

1,799.0000

41

CEUX

Genmab A/S

26/06/2024

2:26:19 PM

1,799.0000

50

CEUX

Genmab A/S

26/06/2024

2:26:19 PM

1,799.0000

16

CEUX

Genmab A/S

26/06/2024

2:26:19 PM

1,799.0000

8

AQEU

Genmab A/S

26/06/2024

2:26:19 PM

1,799.0000

2

AQEU

Genmab A/S

26/06/2024

2:26:19 PM

1,799.0000

5

AQEU

Genmab A/S

26/06/2024

2:26:19 PM

1,799.0000

58

XCSE

Genmab A/S

26/06/2024

2:26:19 PM

1,799.0000

4

XCSE

Genmab A/S

26/06/2024

2:26:19 PM

1,799.0000

29

CEUX

Genmab A/S

26/06/2024

2:31:58 PM

1,797.5000

8

CEUX

Genmab A/S

26/06/2024

2:31:58 PM

1,797.5000

8

CEUX

Genmab A/S

26/06/2024

2:31:58 PM

1,797.5000

3

CEUX

Genmab A/S

26/06/2024

2:31:58 PM

1,797.5000

1

AQEU

Genmab A/S

26/06/2024

2:31:58 PM

1,797.5000

1

AQEU

Genmab A/S

26/06/2024

2:31:58 PM

1,797.5000

5

TQEX

Genmab A/S

26/06/2024

2:31:58 PM

1,797.5000

5

TQEX

Genmab A/S

26/06/2024

2:31:58 PM

1,797.5000

8

XCSE

Genmab A/S

26/06/2024

2:31:58 PM

1,797.5000

8

XCSE

159

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

2:31:58 PM

1,797.5000

56

XCSE

Genmab A/S

26/06/2024

2:31:58 PM

1,797.5000

8

CEUX

Genmab A/S

26/06/2024

2:31:58 PM

1,797.5000

3

CEUX

Genmab A/S

26/06/2024

2:31:58 PM

1,797.5000

5

TQEX

Genmab A/S

26/06/2024

2:31:58 PM

1,797.5000

8

CEUX

Genmab A/S

26/06/2024

2:31:58 PM

1,797.5000

8

CEUX

Genmab A/S

26/06/2024

2:31:58 PM

1,797.5000

8

CEUX

Genmab A/S

26/06/2024

2:31:58 PM

1,797.5000

8

CEUX

Genmab A/S

26/06/2024

2:31:58 PM

1,797.5000

3

CEUX

Genmab A/S

26/06/2024

2:31:58 PM

1,797.5000

1

AQEU

Genmab A/S

26/06/2024

2:31:58 PM

1,797.5000

5

TQEX

Genmab A/S

26/06/2024

2:31:58 PM

1,797.5000

26

TQEX

Genmab A/S

26/06/2024

2:31:58 PM

1,797.0000

4

XCSE

Genmab A/S

26/06/2024

2:31:58 PM

1,797.0000

18

XCSE

Genmab A/S

26/06/2024

2:31:58 PM

1,797.0000

2

XCSE

Genmab A/S

26/06/2024

2:31:58 PM

1,797.0000

18

XCSE

Genmab A/S

26/06/2024

2:31:58 PM

1,797.0000

20

XCSE

Genmab A/S

26/06/2024

2:31:58 PM

1,797.0000

24

XCSE

Genmab A/S

26/06/2024

2:31:58 PM

1,797.0000

24

XCSE

Genmab A/S

26/06/2024

2:31:58 PM

1,797.0000

8

XCSE

Genmab A/S

26/06/2024

2:31:58 PM

1,797.5000

22

XCSE

Genmab A/S

26/06/2024

2:31:58 PM

1,797.0000

21

CEUX

Genmab A/S

26/06/2024

2:31:58 PM

1,797.0000

21

CEUX

Genmab A/S

26/06/2024

2:31:58 PM

1,797.0000

21

CEUX

Genmab A/S

26/06/2024

2:31:58 PM

1,797.0000

16

CEUX

Genmab A/S

26/06/2024

2:31:58 PM

1,797.0000

4

AQEU

Genmab A/S

26/06/2024

2:31:58 PM

1,797.0000

21

CEUX

Genmab A/S

26/06/2024

2:31:58 PM

1,797.0000

8

CEUX

Genmab A/S

26/06/2024

2:31:58 PM

1,797.0000

4

AQEU

Genmab A/S

26/06/2024

2:31:58 PM

1,797.0000

4

AQEU

Genmab A/S

26/06/2024

2:31:58 PM

1,797.0000

4

AQEU

Genmab A/S

26/06/2024

2:31:58 PM

1,797.0000

4

AQEU

Genmab A/S

26/06/2024

2:31:58 PM

1,797.0000

4

AQEU

Genmab A/S

26/06/2024

2:31:58 PM

1,797.0000

4

AQEU

Genmab A/S

26/06/2024

2:31:58 PM

1,797.0000

4

AQEU

Genmab A/S

26/06/2024

2:31:58 PM

1,797.0000

4

AQEU

Genmab A/S

26/06/2024

2:31:58 PM

1,797.0000

4

AQEU

Genmab A/S

26/06/2024

2:31:58 PM

1,797.0000

4

AQEU

Genmab A/S

26/06/2024

2:31:58 PM

1,797.5000

19

TQEX

Genmab A/S

26/06/2024

2:39:23 PM

1,796.0000

18

CEUX

Genmab A/S

26/06/2024

2:39:23 PM

1,796.0000

20

AQEU

Genmab A/S

26/06/2024

2:39:23 PM

1,796.0000

2

AQEU

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

37

CEUX

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

12

CEUX

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

12

CEUX

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

12

CEUX

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

12

CEUX

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

12

CEUX

160

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

12

CEUX

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

12

CEUX

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

12

CEUX

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

12

CEUX

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

12

CEUX

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

12

CEUX

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

12

CEUX

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

7

CEUX

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

12

CEUX

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

10

CEUX

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

2

CEUX

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

12

CEUX

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

2

AQEU

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

33

AQEU

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

12

XCSE

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

21

XCSE

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

323

XCSE

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

12

XCSE

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

21

XCSE

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

12

CEUX

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

12

CEUX

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

2

AQEU

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

11

XCSE

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

1

XCSE

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

10

XCSE

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

11

XCSE

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

7

XCSE

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

5

XCSE

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

5

XCSE

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

12

XCSE

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

10

XCSE

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

12

CEUX

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

2

AQEU

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

12

CEUX

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

12

CEUX

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

12

CEUX

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

12

CEUX

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

2

AQEU

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

2

XCSE

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

25

XCSE

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

7

CEUX

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

5

CEUX

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

2

AQEU

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

2

AQEU

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

12

XCSE

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

1

XCSE

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

2

CEUX

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

10

CEUX

161

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

12

CEUX

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

2

AQEU

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

2

AQEU

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

2

AQEU

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

26

XCSE

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

26

XCSE

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

26

XCSE

Genmab A/S

26/06/2024

2:40:06 PM

1,796.0000

7

XCSE

Genmab A/S

26/06/2024

2:40:45 PM

1,792.5000

69

XCSE

Genmab A/S

26/06/2024

2:40:45 PM

1,792.0000

21

CEUX

Genmab A/S

26/06/2024

2:40:45 PM

1,792.0000

3

AQEU

Genmab A/S

26/06/2024

2:40:45 PM

1,792.0000

5

TQEX

Genmab A/S

26/06/2024

2:40:45 PM

1,792.0000

5

TQEX

Genmab A/S

26/06/2024

2:40:45 PM

1,792.0000

22

XCSE

Genmab A/S

26/06/2024

2:46:55 PM

1,793.0000

10

XCSE

Genmab A/S

26/06/2024

2:46:55 PM

1,793.0000

47

XCSE

Genmab A/S

26/06/2024

2:46:55 PM

1,793.0000

10

XCSE

Genmab A/S

26/06/2024

2:46:55 PM

1,793.0000

9

CEUX

Genmab A/S

26/06/2024

2:46:55 PM

1,793.0000

9

CEUX

Genmab A/S

26/06/2024

2:46:55 PM

1,793.0000

2

CEUX

Genmab A/S

26/06/2024

2:46:55 PM

1,793.0000

9

CEUX

Genmab A/S

26/06/2024

2:46:55 PM

1,793.0000

9

CEUX

Genmab A/S

26/06/2024

2:46:55 PM

1,793.0000

9

CEUX

Genmab A/S

26/06/2024

2:46:55 PM

1,793.0000

9

CEUX

Genmab A/S

26/06/2024

2:46:55 PM

1,793.0000

9

CEUX

Genmab A/S

26/06/2024

2:46:55 PM

1,793.0000

9

CEUX

Genmab A/S

26/06/2024

2:46:55 PM

1,793.0000

9

CEUX

Genmab A/S

26/06/2024

2:46:55 PM

1,793.0000

9

CEUX

Genmab A/S

26/06/2024

2:46:55 PM

1,793.0000

3

CEUX

Genmab A/S

26/06/2024

2:46:55 PM

1,793.0000

2

AQEU

Genmab A/S

26/06/2024

2:46:55 PM

1,793.0000

2

CEUX

Genmab A/S

26/06/2024

2:46:55 PM

1,793.0000

10

XCSE

Genmab A/S

26/06/2024

2:46:55 PM

1,793.0000

10

XCSE

Genmab A/S

26/06/2024

2:46:55 PM

1,793.0000

7

CEUX

Genmab A/S

26/06/2024

2:46:55 PM

1,793.0000

2

AQEU

Genmab A/S

26/06/2024

2:46:55 PM

1,793.0000

9

XCSE

Genmab A/S

26/06/2024

2:46:55 PM

1,793.0000

9

CEUX

Genmab A/S

26/06/2024

2:46:55 PM

1,793.0000

9

CEUX

Genmab A/S

26/06/2024

2:46:55 PM

1,793.0000

9

CEUX

Genmab A/S

26/06/2024

2:46:55 PM

1,793.0000

9

CEUX

Genmab A/S

26/06/2024

2:46:55 PM

1,793.0000

9

CEUX

Genmab A/S

26/06/2024

2:46:55 PM

1,793.0000

8

CEUX

Genmab A/S

26/06/2024

2:46:55 PM

1,793.0000

2

AQEU

Genmab A/S

26/06/2024

2:46:55 PM

1,793.0000

11

AQEU

Genmab A/S

26/06/2024

2:46:55 PM

1,793.0000

1

XCSE

Genmab A/S

26/06/2024

2:46:55 PM

1,793.0000

4

XCSE

Genmab A/S

26/06/2024

2:48:27 PM

1,791.5000

1

AQEU

Genmab A/S

26/06/2024

2:48:39 PM

1,791.5000

33

CEUX

162

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

2:48:39 PM

1,791.5000

31

CEUX

Genmab A/S

26/06/2024

2:48:39 PM

1,791.5000

3

AQEU

Genmab A/S

26/06/2024

2:48:39 PM

1,791.5000

2

AQEU

Genmab A/S

26/06/2024

2:48:39 PM

1,791.5000

5

AQEU

Genmab A/S

26/06/2024

2:48:39 PM

1,791.5000

5

AQEU

Genmab A/S

26/06/2024

2:48:39 PM

1,791.5000

5

AQEU

Genmab A/S

26/06/2024

2:48:39 PM

1,791.5000

5

AQEU

Genmab A/S

26/06/2024

2:48:39 PM

1,791.5000

5

TQEX

Genmab A/S

26/06/2024

2:48:39 PM

1,791.5000

5

TQEX

Genmab A/S

26/06/2024

2:48:39 PM

1,791.5000

5

TQEX

Genmab A/S

26/06/2024

2:48:39 PM

1,791.5000

5

TQEX

Genmab A/S

26/06/2024

2:48:39 PM

1,791.5000

37

XCSE

Genmab A/S

26/06/2024

2:48:39 PM

1,791.5000

32

XCSE

Genmab A/S

26/06/2024

2:48:39 PM

1,791.5000

30

CEUX

Genmab A/S

26/06/2024

2:48:39 PM

1,791.5000

15

CEUX

Genmab A/S

26/06/2024

2:49:10 PM

1,790.0000

23

XCSE

Genmab A/S

26/06/2024

2:49:10 PM

1,790.0000

5

TQEX

Genmab A/S

26/06/2024

2:49:10 PM

1,790.0000

22

CEUX

Genmab A/S

26/06/2024

2:49:10 PM

1,790.0000

1

CEUX

Genmab A/S

26/06/2024

2:49:10 PM

1,790.0000

3

AQEU

Genmab A/S

26/06/2024

2:49:11 PM

1,790.0000

21

CEUX

Genmab A/S

26/06/2024

2:49:11 PM

1,790.0000

3

AQEU

Genmab A/S

26/06/2024

2:49:11 PM

1,790.0000

5

TQEX

Genmab A/S

26/06/2024

2:49:11 PM

1,790.0000

20

XCSE

Genmab A/S

26/06/2024

2:49:11 PM

1,790.0000

15

CEUX

Genmab A/S

26/06/2024

2:49:11 PM

1,790.0000

7

CEUX

Genmab A/S

26/06/2024

2:49:11 PM

1,790.0000

3

XCSE

Genmab A/S

26/06/2024

2:49:11 PM

1,790.0000

23

XCSE

Genmab A/S

26/06/2024

2:49:11 PM

1,790.0000

7

CEUX

Genmab A/S

26/06/2024

2:49:13 PM

1,790.0000

15

CEUX

Genmab A/S

26/06/2024

2:49:13 PM

1,790.0000

3

AQEU

Genmab A/S

26/06/2024

2:49:13 PM

1,790.0000

2

AQEU

Genmab A/S

26/06/2024

2:49:13 PM

1,790.0000

5

TQEX

Genmab A/S

26/06/2024

2:49:13 PM

1,790.0000

1

TQEX

Genmab A/S

26/06/2024

2:49:13 PM

1,790.0000

5

TQEX

Genmab A/S

26/06/2024

2:49:13 PM

1,790.0000

23

XCSE

Genmab A/S

26/06/2024

2:49:13 PM

1,790.0000

5

XCSE

Genmab A/S

26/06/2024

2:49:13 PM

1,790.0000

6

CEUX

Genmab A/S

26/06/2024

2:51:09 PM

1,786.5000

19

CEUX

Genmab A/S

26/06/2024

2:51:09 PM

1,786.5000

1

CEUX

Genmab A/S

26/06/2024

2:51:09 PM

1,786.5000

5

TQEX

Genmab A/S

26/06/2024

2:51:09 PM

1,786.5000

21

XCSE

Genmab A/S

26/06/2024

2:51:09 PM

1,786.5000

5

TQEX

Genmab A/S

26/06/2024

2:52:58 PM

1,786.0000

67

XCSE

Genmab A/S

26/06/2024

2:54:46 PM

1,787.0000

78

CEUX

Genmab A/S

26/06/2024

2:54:46 PM

1,787.0000

44

CEUX

Genmab A/S

26/06/2024

2:54:46 PM

1,787.0000

8

CEUX

Genmab A/S

26/06/2024

2:54:46 PM

1,787.0000

44

CEUX

163

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

2:54:46 PM

1,787.0000

11

TQEX

Genmab A/S

26/06/2024

2:54:46 PM

1,787.0000

2

TQEX

Genmab A/S

26/06/2024

2:54:46 PM

1,787.0000

87

XCSE

Genmab A/S

26/06/2024

2:54:46 PM

1,787.0000

39

XCSE

Genmab A/S

26/06/2024

2:54:46 PM

1,787.0000

18

XCSE

Genmab A/S

26/06/2024

2:54:46 PM

1,787.0000

18

XCSE

Genmab A/S

26/06/2024

2:54:46 PM

1,787.0000

18

XCSE

Genmab A/S

26/06/2024

2:54:46 PM

1,787.0000

36

CEUX

Genmab A/S

26/06/2024

2:54:46 PM

1,787.0000

16

CEUX

Genmab A/S

26/06/2024

2:54:46 PM

1,787.0000

34

CEUX

Genmab A/S

26/06/2024

2:54:46 PM

1,787.0000

50

CEUX

Genmab A/S

26/06/2024

2:56:12 PM

1,785.5000

17

CEUX

Genmab A/S

26/06/2024

2:56:12 PM

1,785.5000

17

CEUX

Genmab A/S

26/06/2024

2:56:12 PM

1,785.5000

3

CEUX

Genmab A/S

26/06/2024

2:56:12 PM

1,785.5000

17

CEUX

Genmab A/S

26/06/2024

2:56:12 PM

1,785.5000

17

CEUX

Genmab A/S

26/06/2024

2:56:12 PM

1,785.5000

2

CEUX

Genmab A/S

26/06/2024

2:56:12 PM

1,785.5000

2

AQEU

Genmab A/S

26/06/2024

2:56:12 PM

1,785.5000

2

AQEU

Genmab A/S

26/06/2024

2:56:12 PM

1,785.5000

2

AQEU

Genmab A/S

26/06/2024

2:56:12 PM

1,785.5000

5

AQEU

Genmab A/S

26/06/2024

2:56:12 PM

1,785.5000

7

TQEX

Genmab A/S

26/06/2024

2:56:12 PM

1,785.5000

5

TQEX

Genmab A/S

26/06/2024

2:56:12 PM

1,785.5000

1

TQEX

Genmab A/S

26/06/2024

2:56:12 PM

1,785.5000

5

TQEX

Genmab A/S

26/06/2024

2:56:12 PM

1,785.5000

18

XCSE

Genmab A/S

26/06/2024

2:56:12 PM

1,785.5000

26

XCSE

Genmab A/S

26/06/2024

2:56:12 PM

1,785.5000

18

XCSE

Genmab A/S

26/06/2024

2:56:12 PM

1,785.5000

41

XCSE

Genmab A/S

26/06/2024

2:56:12 PM

1,785.0000

21

XCSE

Genmab A/S

26/06/2024

2:56:12 PM

1,785.0000

19

XCSE

Genmab A/S

26/06/2024

2:56:12 PM

1,785.5000

17

CEUX

Genmab A/S

26/06/2024

2:56:12 PM

1,785.5000

5

CEUX

Genmab A/S

26/06/2024

2:56:12 PM

1,785.5000

2

AQEU

Genmab A/S

26/06/2024

2:56:12 PM

1,785.5000

2

AQEU

Genmab A/S

26/06/2024

2:56:12 PM

1,785.5000

5

TQEX

Genmab A/S

26/06/2024

2:56:12 PM

1,785.0000

19

CEUX

Genmab A/S

26/06/2024

2:56:12 PM

1,785.0000

19

CEUX

Genmab A/S

26/06/2024

2:56:12 PM

1,785.0000

4

CEUX

Genmab A/S

26/06/2024

2:56:12 PM

1,785.0000

19

CEUX

Genmab A/S

26/06/2024

2:56:12 PM

1,785.0000

19

CEUX

Genmab A/S

26/06/2024

2:56:12 PM

1,785.0000

3

CEUX

Genmab A/S

26/06/2024

2:56:12 PM

1,785.0000

3

AQEU

Genmab A/S

26/06/2024

2:56:12 PM

1,785.0000

3

AQEU

Genmab A/S

26/06/2024

2:56:12 PM

1,785.0000

3

AQEU

Genmab A/S

26/06/2024

2:56:12 PM

1,785.0000

3

AQEU

Genmab A/S

26/06/2024

2:56:12 PM

1,785.0000

3

AQEU

Genmab A/S

26/06/2024

2:56:12 PM

1,785.0000

3

AQEU

164

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

2:56:12 PM

1,785.0000

3

AQEU

Genmab A/S

26/06/2024

2:56:12 PM

1,785.0000

3

AQEU

Genmab A/S

26/06/2024

2:56:12 PM

1,785.0000

3

AQEU

Genmab A/S

26/06/2024

2:56:12 PM

1,785.0000

3

AQEU

Genmab A/S

26/06/2024

2:56:12 PM

1,785.5000

6

TQEX

Genmab A/S

26/06/2024

2:56:12 PM

1,785.5000

6

TQEX

Genmab A/S

26/06/2024

2:56:12 PM

1,785.5000

6

TQEX

Genmab A/S

26/06/2024

2:56:12 PM

1,785.5000

6

TQEX

Genmab A/S

26/06/2024

2:56:12 PM

1,785.5000

6

TQEX

Genmab A/S

26/06/2024

2:56:12 PM

1,785.5000

6

TQEX

Genmab A/S

26/06/2024

2:56:12 PM

1,784.5000

18

CEUX

Genmab A/S

26/06/2024

2:56:12 PM

1,784.5000

18

CEUX

Genmab A/S

26/06/2024

2:56:12 PM

1,784.5000

18

CEUX

Genmab A/S

26/06/2024

2:56:12 PM

1,784.5000

3

AQEU

Genmab A/S

26/06/2024

2:56:12 PM

1,784.5000

3

AQEU

Genmab A/S

26/06/2024

2:56:12 PM

1,785.0000

2

XCSE

Genmab A/S

26/06/2024

2:56:12 PM

1,785.0000

49

XCSE

Genmab A/S

26/06/2024

2:56:12 PM

1,784.5000

20

XCSE

Genmab A/S

26/06/2024

2:56:12 PM

1,784.5000

20

XCSE

Genmab A/S

26/06/2024

2:56:12 PM

1,784.5000

20

XCSE

Genmab A/S

26/06/2024

2:56:12 PM

1,784.5000

20

XCSE

Genmab A/S

26/06/2024

2:56:12 PM

1,784.5000

6

XCSE

Genmab A/S

26/06/2024

2:56:12 PM

1,784.5000

6

XCSE

Genmab A/S

26/06/2024

2:56:12 PM

1,784.5000

18

CEUX

Genmab A/S

26/06/2024

2:56:12 PM

1,784.5000

12

CEUX

Genmab A/S

26/06/2024

2:56:12 PM

1,784.5000

3

AQEU

Genmab A/S

26/06/2024

2:56:12 PM

1,784.5000

3

AQEU

Genmab A/S

26/06/2024

2:56:12 PM

1,784.5000

3

AQEU

Genmab A/S

26/06/2024

2:56:12 PM

1,784.0000

14

XCSE

Genmab A/S

26/06/2024

2:56:12 PM

1,784.0000

2

XCSE

Genmab A/S

26/06/2024

2:56:12 PM

1,784.0000

27

XCSE

Genmab A/S

26/06/2024

3:02:09 PM

1,779.0000

5

TQEX

Genmab A/S

26/06/2024

3:02:09 PM

1,779.0000

3

AQEU

Genmab A/S

26/06/2024

3:02:09 PM

1,779.0000

4

AQEU

Genmab A/S

26/06/2024

3:04:01 PM

1,777.5000

8

XCSE

Genmab A/S

26/06/2024

3:05:25 PM

1,782.5000

85

CEUX

Genmab A/S

26/06/2024

3:05:25 PM

1,782.5000

12

AQEU

Genmab A/S

26/06/2024

3:05:25 PM

1,782.5000

3

TQEX

Genmab A/S

26/06/2024

3:05:25 PM

1,782.5000

10

TQEX

Genmab A/S

26/06/2024

3:05:25 PM

1,782.5000

94

XCSE

Genmab A/S

26/06/2024

3:05:25 PM

1,782.0000

42

XCSE

Genmab A/S

26/06/2024

3:05:25 PM

1,782.0000

41

XCSE

Genmab A/S

26/06/2024

3:05:25 PM

1,782.0000

24

CEUX

Genmab A/S

26/06/2024

3:05:25 PM

1,782.0000

14

CEUX

Genmab A/S

26/06/2024

3:05:25 PM

1,782.0000

24

CEUX

Genmab A/S

26/06/2024

3:05:25 PM

1,782.0000

13

CEUX

Genmab A/S

26/06/2024

3:05:25 PM

1,782.0000

6

AQEU

Genmab A/S

26/06/2024

3:05:25 PM

1,782.0000

6

AQEU

165

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

3:05:25 PM

1,782.0000

6

AQEU

Genmab A/S

26/06/2024

3:05:25 PM

1,782.0000

6

AQEU

Genmab A/S

26/06/2024

3:05:25 PM

1,781.5000

10

CEUX

Genmab A/S

26/06/2024

3:05:25 PM

1,781.5000

2

AQEU

Genmab A/S

26/06/2024

3:05:25 PM

1,781.5000

2

AQEU

Genmab A/S

26/06/2024

3:05:25 PM

1,781.5000

10

XCSE

Genmab A/S

26/06/2024

3:05:25 PM

1,781.5000

10

XCSE

Genmab A/S

26/06/2024

3:05:25 PM

1,781.5000

30

XCSE

Genmab A/S

26/06/2024

3:05:25 PM

1,781.5000

10

XCSE

Genmab A/S

26/06/2024

3:05:25 PM

1,781.5000

10

XCSE

Genmab A/S

26/06/2024

3:05:25 PM

1,781.5000

10

XCSE

Genmab A/S

26/06/2024

3:05:25 PM

1,781.5000

10

CEUX

Genmab A/S

26/06/2024

3:05:25 PM

1,782.0000

20

XCSE

Genmab A/S

26/06/2024

3:05:25 PM

1,781.5000

10

CEUX

Genmab A/S

26/06/2024

3:07:51 PM

1,785.0000

21

XCSE

Genmab A/S

26/06/2024

3:08:15 PM

1,785.0000

10

XCSE

Genmab A/S

26/06/2024

3:08:15 PM

1,785.0000

25

XCSE

Genmab A/S

26/06/2024

3:08:15 PM

1,785.0000

27

CEUX

Genmab A/S

26/06/2024

3:08:15 PM

1,785.0000

5

TQEX

Genmab A/S

26/06/2024

3:08:15 PM

1,785.0000

24

CEUX

Genmab A/S

26/06/2024

3:08:15 PM

1,785.0000

5

TQEX

Genmab A/S

26/06/2024

3:08:15 PM

1,785.0000

33

XCSE

Genmab A/S

26/06/2024

3:08:15 PM

1,785.0000

34

XCSE

Genmab A/S

26/06/2024

3:08:15 PM

1,785.0000

13

XCSE

Genmab A/S

26/06/2024

3:09:52 PM

1,785.5000

8

XCSE

Genmab A/S

26/06/2024

3:10:39 PM

1,786.5000

23

XCSE

Genmab A/S

26/06/2024

3:10:39 PM

1,786.5000

11

XCSE

Genmab A/S

26/06/2024

3:10:39 PM

1,786.5000

12

XCSE

Genmab A/S

26/06/2024

3:10:39 PM

1,786.5000

12

XCSE

Genmab A/S

26/06/2024

3:10:39 PM

1,786.5000

11

XCSE

Genmab A/S

26/06/2024

3:10:39 PM

1,786.5000

23

XCSE

Genmab A/S

26/06/2024

3:11:12 PM

1,788.5000

11

CEUX

Genmab A/S

26/06/2024

3:11:12 PM

1,788.5000

11

CEUX

Genmab A/S

26/06/2024

3:11:12 PM

1,788.5000

11

CEUX

Genmab A/S

26/06/2024

3:11:12 PM

1,788.5000

6

CEUX

Genmab A/S

26/06/2024

3:11:12 PM

1,788.5000

11

CEUX

Genmab A/S

26/06/2024

3:11:12 PM

1,788.5000

11

CEUX

Genmab A/S

26/06/2024

3:11:12 PM

1,788.5000

3

CEUX

Genmab A/S

26/06/2024

3:11:12 PM

1,788.5000

11

CEUX

Genmab A/S

26/06/2024

3:11:12 PM

1,788.5000

11

XCSE

Genmab A/S

26/06/2024

3:11:12 PM

1,788.5000

16

XCSE

Genmab A/S

26/06/2024

3:11:12 PM

1,788.5000

11

XCSE

Genmab A/S

26/06/2024

3:11:12 PM

1,788.5000

12

XCSE

Genmab A/S

26/06/2024

3:11:12 PM

1,788.5000

11

CEUX

Genmab A/S

26/06/2024

3:11:12 PM

1,788.5000

2

CEUX

Genmab A/S

26/06/2024

3:11:12 PM

1,788.5000

5

CEUX

Genmab A/S

26/06/2024

3:11:12 PM

1,788.5000

11

XCSE

Genmab A/S

26/06/2024

3:11:12 PM

1,788.5000

1

XCSE

166

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

3:11:12 PM

1,788.5000

11

XCSE

Genmab A/S

26/06/2024

3:11:12 PM

1,788.5000

1

XCSE

Genmab A/S

26/06/2024

3:11:12 PM

1,788.5000

5

XCSE

Genmab A/S

26/06/2024

3:11:12 PM

1,788.5000

6

XCSE

Genmab A/S

26/06/2024

3:11:12 PM

1,788.5000

3

XCSE

Genmab A/S

26/06/2024

3:11:12 PM

1,788.5000

8

XCSE

Genmab A/S

26/06/2024

3:11:12 PM

1,788.5000

3

XCSE

Genmab A/S

26/06/2024

3:11:12 PM

1,788.5000

11

XCSE

Genmab A/S

26/06/2024

3:11:12 PM

1,788.5000

11

XCSE

Genmab A/S

26/06/2024

3:11:12 PM

1,788.5000

4

CEUX

Genmab A/S

26/06/2024

3:11:12 PM

1,788.5000

1

XCSE

Genmab A/S

26/06/2024

3:11:12 PM

1,788.0000

43

XCSE

Genmab A/S

26/06/2024

3:11:12 PM

1,788.5000

14

CEUX

Genmab A/S

26/06/2024

3:11:12 PM

1,788.0000

43

XCSE

Genmab A/S

26/06/2024

3:11:12 PM

1,788.0000

12

XCSE

Genmab A/S

26/06/2024

3:11:12 PM

1,788.0000

11

XCSE

Genmab A/S

26/06/2024

3:11:12 PM

1,788.0000

8

XCSE

Genmab A/S

26/06/2024

3:11:12 PM

1,788.0000

12

XCSE

Genmab A/S

26/06/2024

3:11:12 PM

1,788.0000

35

CEUX

Genmab A/S

26/06/2024

3:11:33 PM

1,785.5000

7

CEUX

Genmab A/S

26/06/2024

3:15:20 PM

1,787.0000

39

XCSE

Genmab A/S

26/06/2024

3:15:22 PM

1,786.5000

11

XCSE

Genmab A/S

26/06/2024

3:15:53 PM

1,787.5000

4

CEUX

Genmab A/S

26/06/2024

3:15:53 PM

1,787.5000

34

CEUX

Genmab A/S

26/06/2024

3:16:04 PM

1,787.5000

35

CEUX

Genmab A/S

26/06/2024

3:16:21 PM

1,787.5000

2

CEUX

Genmab A/S

26/06/2024

3:16:39 PM

1,787.5000

34

CEUX

Genmab A/S

26/06/2024

3:16:39 PM

1,787.5000

10

CEUX

Genmab A/S

26/06/2024

3:16:39 PM

1,787.5000

33

CEUX

Genmab A/S

26/06/2024

3:16:39 PM

1,787.5000

10

XCSE

Genmab A/S

26/06/2024

3:16:39 PM

1,787.5000

10

XCSE

Genmab A/S

26/06/2024

3:16:39 PM

1,787.5000

10

CEUX

Genmab A/S

26/06/2024

3:16:39 PM

1,787.5000

10

XCSE

Genmab A/S

26/06/2024

3:16:39 PM

1,787.5000

3

XCSE

Genmab A/S

26/06/2024

3:16:39 PM

1,787.5000

7

XCSE

Genmab A/S

26/06/2024

3:16:39 PM

1,787.5000

10

CEUX

Genmab A/S

26/06/2024

3:16:39 PM

1,787.5000

6

XCSE

Genmab A/S

26/06/2024

3:16:39 PM

1,787.5000

4

XCSE

Genmab A/S

26/06/2024

3:16:39 PM

1,787.5000

6

XCSE

Genmab A/S

26/06/2024

3:16:39 PM

1,787.5000

10

XCSE

Genmab A/S

26/06/2024

3:16:39 PM

1,787.5000

3

CEUX

Genmab A/S

26/06/2024

3:16:39 PM

1,787.5000

6

CEUX

Genmab A/S

26/06/2024

3:16:47 PM

1,787.5000

1

CEUX

Genmab A/S

26/06/2024

3:16:47 PM

1,787.5000

10

XCSE

Genmab A/S

26/06/2024

3:16:47 PM

1,787.5000

10

CEUX

Genmab A/S

26/06/2024

3:16:47 PM

1,787.5000

10

XCSE

Genmab A/S

26/06/2024

3:16:49 PM

1,787.5000

7

CEUX

Genmab A/S

26/06/2024

3:16:50 PM

1,787.5000

10

XCSE

167

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

3:19:14 PM

1,789.5000

25

XCSE

Genmab A/S

26/06/2024

3:19:14 PM

1,789.5000

11

XCSE

Genmab A/S

26/06/2024

3:19:14 PM

1,789.5000

14

XCSE

Genmab A/S

26/06/2024

3:19:14 PM

1,789.5000

14

XCSE

Genmab A/S

26/06/2024

3:19:14 PM

1,789.5000

11

XCSE

Genmab A/S

26/06/2024

3:19:14 PM

1,789.5000

3

XCSE

Genmab A/S

26/06/2024

3:19:14 PM

1,789.5000

24

XCSE

Genmab A/S

26/06/2024

3:19:14 PM

1,789.5000

1

XCSE

Genmab A/S

26/06/2024

3:19:14 PM

1,789.5000

16

XCSE

Genmab A/S

26/06/2024

3:19:18 PM

1,789.5000

22

XCSE

Genmab A/S

26/06/2024

3:19:18 PM

1,789.5000

13

XCSE

Genmab A/S

26/06/2024

3:19:33 PM

1,789.5000

13

CEUX

Genmab A/S

26/06/2024

3:19:33 PM

1,789.5000

16

XCSE

Genmab A/S

26/06/2024

3:19:33 PM

1,789.5000

6

XCSE

Genmab A/S

26/06/2024

3:19:51 PM

1,789.5000

7

CEUX

Genmab A/S

26/06/2024

3:19:51 PM

1,789.5000

16

XCSE

Genmab A/S

26/06/2024

3:19:51 PM

1,789.5000

18

XCSE

Genmab A/S

26/06/2024

3:20:14 PM

1,789.5000

11

CEUX

Genmab A/S

26/06/2024

3:20:14 PM

1,789.5000

10

XCSE

Genmab A/S

26/06/2024

3:20:25 PM

1,789.5000

39

XCSE

Genmab A/S

26/06/2024

3:20:26 PM

1,789.0000

12

CEUX

Genmab A/S

26/06/2024

3:20:26 PM

1,789.0000

12

CEUX

Genmab A/S

26/06/2024

3:20:26 PM

1,789.0000

11

CEUX

Genmab A/S

26/06/2024

3:20:26 PM

1,789.0000

1

CEUX

Genmab A/S

26/06/2024

3:20:26 PM

1,789.0000

2

CEUX

Genmab A/S

26/06/2024

3:20:26 PM

1,789.0000

3

CEUX

Genmab A/S

26/06/2024

3:20:26 PM

1,789.0000

12

XCSE

Genmab A/S

26/06/2024

3:20:26 PM

1,789.0000

10

XCSE

Genmab A/S

26/06/2024

3:20:26 PM

1,789.0000

2

XCSE

Genmab A/S

26/06/2024

3:20:26 PM

1,789.0000

12

XCSE

Genmab A/S

26/06/2024

3:20:26 PM

1,789.0000

7

XCSE

Genmab A/S

26/06/2024

3:20:26 PM

1,789.0000

12

XCSE

Genmab A/S

26/06/2024

3:20:26 PM

1,789.0000

9

CEUX

Genmab A/S

26/06/2024

3:20:26 PM

1,789.0000

12

XCSE

Genmab A/S

26/06/2024

3:20:26 PM

1,789.0000

11

XCSE

Genmab A/S

26/06/2024

3:20:27 PM

1,789.0000

9

CEUX

Genmab A/S

26/06/2024

3:20:27 PM

1,789.0000

3

CEUX

Genmab A/S

26/06/2024

3:20:27 PM

1,789.0000

1

XCSE

Genmab A/S

26/06/2024

3:21:18 PM

1,788.5000

2

XCSE

Genmab A/S

26/06/2024

3:21:18 PM

1,788.5000

8

XCSE

Genmab A/S

26/06/2024

3:21:18 PM

1,788.5000

5

CEUX

Genmab A/S

26/06/2024

3:22:06 PM

1,789.5000

13

AQEU

Genmab A/S

26/06/2024

3:22:06 PM

1,789.5000

4

AQEU

Genmab A/S

26/06/2024

3:23:02 PM

1,790.0000

49

XCSE

Genmab A/S

26/06/2024

3:23:02 PM

1,790.0000

26

XCSE

Genmab A/S

26/06/2024

3:23:02 PM

1,790.0000

1

XCSE

Genmab A/S

26/06/2024

3:23:02 PM

1,790.0000

22

XCSE

Genmab A/S

26/06/2024

3:23:02 PM

1,790.0000

1

XCSE

168

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

3:23:02 PM

1,790.0000

15

XCSE

Genmab A/S

26/06/2024

3:23:02 PM

1,789.5000

49

XCSE

Genmab A/S

26/06/2024

3:23:02 PM

1,789.5000

8

XCSE

Genmab A/S

26/06/2024

3:23:02 PM

1,789.5000

24

XCSE

Genmab A/S

26/06/2024

3:23:02 PM

1,789.5000

4

XCSE

Genmab A/S

26/06/2024

3:23:02 PM

1,789.5000

52

CEUX

Genmab A/S

26/06/2024

3:23:02 PM

1,789.5000

52

CEUX

Genmab A/S

26/06/2024

3:23:02 PM

1,789.5000

20

CEUX

Genmab A/S

26/06/2024

3:23:02 PM

1,789.5000

8

AQEU

Genmab A/S

26/06/2024

3:23:02 PM

1,789.5000

8

AQEU

Genmab A/S

26/06/2024

3:23:02 PM

1,789.5000

8

AQEU

Genmab A/S

26/06/2024

3:23:02 PM

1,789.5000

8

AQEU

Genmab A/S

26/06/2024

3:23:02 PM

1,789.5000

8

AQEU

Genmab A/S

26/06/2024

3:23:02 PM

1,789.5000

4

AQEU

Genmab A/S

26/06/2024

3:23:02 PM

1,789.5000

12

XCSE

Genmab A/S

26/06/2024

3:23:02 PM

1,789.5000

41

XCSE

Genmab A/S

26/06/2024

3:23:02 PM

1,789.5000

24

XCSE

Genmab A/S

26/06/2024

3:23:02 PM

1,789.5000

12

XCSE

Genmab A/S

26/06/2024

3:23:02 PM

1,789.5000

24

XCSE

Genmab A/S

26/06/2024

3:23:02 PM

1,789.5000

24

XCSE

Genmab A/S

26/06/2024

3:23:02 PM

1,789.5000

12

XCSE

Genmab A/S

26/06/2024

3:23:02 PM

1,789.5000

9

AQEU

Genmab A/S

26/06/2024

3:23:02 PM

1,789.5000

1

AQEU

Genmab A/S

26/06/2024

3:23:02 PM

1,788.5000

71

CEUX

Genmab A/S

26/06/2024

3:23:02 PM

1,788.5000

51

XCSE

Genmab A/S

26/06/2024

3:23:02 PM

1,788.5000

38

XCSE

Genmab A/S

26/06/2024

3:23:03 PM

1,788.5000

13

XCSE

Genmab A/S

26/06/2024

3:26:27 PM

1,789.0000

10

CEUX

Genmab A/S

26/06/2024

3:26:27 PM

1,789.0000

2

AQEU

Genmab A/S

26/06/2024

3:26:27 PM

1,789.0000

1

CEUX

Genmab A/S

26/06/2024

3:26:27 PM

1,789.0000

9

CEUX

Genmab A/S

26/06/2024

3:26:27 PM

1,789.0000

11

XCSE

Genmab A/S

26/06/2024

3:26:27 PM

1,789.0000

11

XCSE

Genmab A/S

26/06/2024

3:26:27 PM

1,789.0000

6

XCSE

Genmab A/S

26/06/2024

3:26:27 PM

1,789.0000

4

XCSE

Genmab A/S

26/06/2024

3:26:27 PM

1,789.0000

7

XCSE

Genmab A/S

26/06/2024

3:26:27 PM

1,789.0000

11

XCSE

Genmab A/S

26/06/2024

3:26:27 PM

1,789.0000

10

XCSE

Genmab A/S

26/06/2024

3:26:27 PM

1,789.0000

11

XCSE

Genmab A/S

26/06/2024

3:26:27 PM

1,789.0000

10

XCSE

Genmab A/S

26/06/2024

3:26:27 PM

1,789.0000

10

CEUX

Genmab A/S

26/06/2024

3:27:25 PM

1,790.0000

10

CEUX

Genmab A/S

26/06/2024

3:27:25 PM

1,790.0000

2

AQEU

Genmab A/S

26/06/2024

3:27:25 PM

1,790.0000

8

XCSE

Genmab A/S

26/06/2024

3:27:25 PM

1,790.0000

7

CEUX

Genmab A/S

26/06/2024

3:27:25 PM

1,790.0000

2

XCSE

Genmab A/S

26/06/2024

3:28:27 PM

1,789.0000

3

AQEU

Genmab A/S

26/06/2024

3:28:27 PM

1,789.0000

21

XCSE

169

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

3:29:32 PM

1,789.5000

56

XCSE

Genmab A/S

26/06/2024

3:29:32 PM

1,789.5000

51

CEUX

Genmab A/S

26/06/2024

3:29:32 PM

1,789.5000

51

CEUX

Genmab A/S

26/06/2024

3:29:32 PM

1,789.5000

21

CEUX

Genmab A/S

26/06/2024

3:29:32 PM

1,789.5000

56

XCSE

Genmab A/S

26/06/2024

3:29:32 PM

1,789.5000

29

XCSE

Genmab A/S

26/06/2024

3:29:32 PM

1,789.5000

4

CEUX

Genmab A/S

26/06/2024

3:29:33 PM

1,789.0000

11

XCSE

Genmab A/S

26/06/2024

3:30:00 PM

1,787.5000

40

CEUX

Genmab A/S

26/06/2024

3:30:00 PM

1,787.5000

15

CEUX

Genmab A/S

26/06/2024

3:30:00 PM

1,787.5000

25

CEUX

Genmab A/S

26/06/2024

3:30:00 PM

1,787.5000

40

CEUX

Genmab A/S

26/06/2024

3:30:00 PM

1,787.5000

4

CEUX

Genmab A/S

26/06/2024

3:30:00 PM

1,787.5000

2

CEUX

Genmab A/S

26/06/2024

3:30:00 PM

1,787.5000

31

CEUX

Genmab A/S

26/06/2024

3:30:00 PM

1,787.5000

6

AQEU

Genmab A/S

26/06/2024

3:30:00 PM

1,787.5000

16

AQEU

Genmab A/S

26/06/2024

3:30:00 PM

1,787.5000

6

AQEU

Genmab A/S

26/06/2024

3:30:00 PM

1,787.5000

16

AQEU

Genmab A/S

26/06/2024

3:30:00 PM

1,787.5000

13

XCSE

Genmab A/S

26/06/2024

3:30:00 PM

1,787.5000

32

XCSE

Genmab A/S

26/06/2024

3:30:00 PM

1,787.5000

7

XCSE

Genmab A/S

26/06/2024

3:30:00 PM

1,787.5000

50

XCSE

Genmab A/S

26/06/2024

3:30:00 PM

1,787.5000

45

XCSE

Genmab A/S

26/06/2024

3:30:00 PM

1,787.5000

8

XCSE

Genmab A/S

26/06/2024

3:30:00 PM

1,787.5000

18

XCSE

Genmab A/S

26/06/2024

3:30:01 PM

1,787.0000

23

CEUX

Genmab A/S

26/06/2024

3:30:01 PM

1,787.0000

4

AQEU

Genmab A/S

26/06/2024

3:30:01 PM

1,787.0000

3

CEUX

Genmab A/S

26/06/2024

3:30:01 PM

1,787.0000

26

XCSE

Genmab A/S

26/06/2024

3:30:01 PM

1,787.0000

26

XCSE

Genmab A/S

26/06/2024

3:30:01 PM

1,787.0000

26

XCSE

Genmab A/S

26/06/2024

3:30:01 PM

1,787.0000

7

XCSE

Genmab A/S

26/06/2024

3:30:01 PM

1,787.0000

26

XCSE

Genmab A/S

26/06/2024

3:30:01 PM

1,787.0000

26

XCSE

Genmab A/S

26/06/2024

3:30:01 PM

1,787.0000

8

XCSE

Genmab A/S

26/06/2024

3:30:01 PM

1,787.0000

20

CEUX

Genmab A/S

26/06/2024

3:30:01 PM

1,787.0000

23

CEUX

Genmab A/S

26/06/2024

3:30:01 PM

1,787.0000

23

CEUX

Genmab A/S

26/06/2024

3:30:01 PM

1,787.0000

7

XCSE

Genmab A/S

26/06/2024

3:30:01 PM

1,787.0000

4

AQEU

Genmab A/S

26/06/2024

3:30:01 PM

1,787.0000

23

CEUX

Genmab A/S

26/06/2024

3:30:01 PM

1,787.0000

23

CEUX

Genmab A/S

26/06/2024

3:30:01 PM

1,787.0000

11

XCSE

Genmab A/S

26/06/2024

3:30:01 PM

1,787.0000

13

CEUX

Genmab A/S

26/06/2024

3:30:01 PM

1,787.0000

2

CEUX

Genmab A/S

26/06/2024

3:30:01 PM

1,787.0000

4

AQEU

Genmab A/S

26/06/2024

3:30:01 PM

1,787.0000

5

XCSE

170

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

3:30:01 PM

1,787.0000

32

CEUX

Genmab A/S

26/06/2024

3:33:56 PM

1,784.0000

5

CEUX

Genmab A/S

26/06/2024

3:33:56 PM

1,784.0000

16

CEUX

Genmab A/S

26/06/2024

3:33:56 PM

1,784.0000

3

AQEU

Genmab A/S

26/06/2024

3:33:56 PM

1,784.0000

22

XCSE

Genmab A/S

26/06/2024

3:33:56 PM

1,784.0000

8

CEUX

Genmab A/S

26/06/2024

3:33:56 PM

1,784.0000

22

XCSE

Genmab A/S

26/06/2024

3:35:47 PM

1,786.0000

15

CEUX

Genmab A/S

26/06/2024

3:35:47 PM

1,786.0000

22

XCSE

Genmab A/S

26/06/2024

3:35:47 PM

1,786.0000

5

CEUX

Genmab A/S

26/06/2024

3:35:47 PM

1,786.0000

2

AQEU

Genmab A/S

26/06/2024

3:37:57 PM

1,788.0000

36

TQEX

Genmab A/S

26/06/2024

3:38:10 PM

1,788.0000

16

TQEX

Genmab A/S

26/06/2024

3:38:10 PM

1,788.0000

9

TQEX

Genmab A/S

26/06/2024

3:38:25 PM

1,787.5000

4

AQEU

Genmab A/S

26/06/2024

3:38:28 PM

1,787.0000

3

CEUX

Genmab A/S

26/06/2024

3:38:28 PM

1,787.0000

19

CEUX

Genmab A/S

26/06/2024

3:38:28 PM

1,787.0000

19

CEUX

Genmab A/S

26/06/2024

3:38:28 PM

1,787.0000

3

CEUX

Genmab A/S

26/06/2024

3:38:28 PM

1,787.0000

22

CEUX

Genmab A/S

26/06/2024

3:38:28 PM

1,787.0000

9

CEUX

Genmab A/S

26/06/2024

3:38:28 PM

1,787.0000

13

CEUX

Genmab A/S

26/06/2024

3:38:28 PM

1,787.0000

1

AQEU

Genmab A/S

26/06/2024

3:38:28 PM

1,787.0000

3

AQEU

Genmab A/S

26/06/2024

3:38:28 PM

1,787.0000

10

AQEU

Genmab A/S

26/06/2024

3:38:28 PM

1,787.0000

22

CEUX

Genmab A/S

26/06/2024

3:38:28 PM

1,787.0000

6

CEUX

Genmab A/S

26/06/2024

3:38:28 PM

1,787.0000

16

CEUX

Genmab A/S

26/06/2024

3:38:28 PM

1,787.0000

9

CEUX

Genmab A/S

26/06/2024

3:38:28 PM

1,787.0000

13

CEUX

Genmab A/S

26/06/2024

3:38:28 PM

1,787.0000

4

AQEU

Genmab A/S

26/06/2024

3:38:28 PM

1,787.0000

4

AQEU

Genmab A/S

26/06/2024

3:38:28 PM

1,787.0000

4

AQEU

Genmab A/S

26/06/2024

3:38:28 PM

1,787.0000

4

AQEU

Genmab A/S

26/06/2024

3:38:28 PM

1,787.0000

4

AQEU

Genmab A/S

26/06/2024

3:38:28 PM

1,787.0000

4

AQEU

Genmab A/S

26/06/2024

3:38:28 PM

1,787.0000

4

AQEU

Genmab A/S

26/06/2024

3:38:28 PM

1,787.0000

2

AQEU

Genmab A/S

26/06/2024

3:38:28 PM

1,787.0000

24

XCSE

Genmab A/S

26/06/2024

3:38:28 PM

1,787.0000

24

XCSE

Genmab A/S

26/06/2024

3:38:28 PM

1,787.0000

11

XCSE

Genmab A/S

26/06/2024

3:38:28 PM

1,787.0000

1

XCSE

Genmab A/S

26/06/2024

3:38:28 PM

1,787.0000

12

XCSE

Genmab A/S

26/06/2024

3:38:28 PM

1,787.0000

24

XCSE

Genmab A/S

26/06/2024

3:38:28 PM

1,787.0000

24

XCSE

Genmab A/S

26/06/2024

3:38:28 PM

1,787.0000

24

XCSE

Genmab A/S

26/06/2024

3:38:28 PM

1,787.0000

13

XCSE

Genmab A/S

26/06/2024

3:38:28 PM

1,787.0000

13

XCSE

171

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

3:38:28 PM

1,786.0000

19

CEUX

Genmab A/S

26/06/2024

3:38:28 PM

1,786.0000

3

AQEU

Genmab A/S

26/06/2024

3:38:28 PM

1,786.0000

1

AQEU

Genmab A/S

26/06/2024

3:38:28 PM

1,786.0000

3

AQEU

Genmab A/S

26/06/2024

3:38:28 PM

1,786.0000

3

AQEU

Genmab A/S

26/06/2024

3:38:28 PM

1,786.0000

21

XCSE

Genmab A/S

26/06/2024

3:38:28 PM

1,786.0000

5

XCSE

Genmab A/S

26/06/2024

3:38:28 PM

1,786.0000

21

XCSE

Genmab A/S

26/06/2024

3:38:28 PM

1,786.0000

21

XCSE

Genmab A/S

26/06/2024

3:38:28 PM

1,786.0000

27

XCSE

Genmab A/S

26/06/2024

3:38:28 PM

1,786.0000

21

XCSE

Genmab A/S

26/06/2024

3:38:28 PM

1,786.0000

19

CEUX

Genmab A/S

26/06/2024

3:38:28 PM

1,786.0000

3

AQEU

Genmab A/S

26/06/2024

3:38:28 PM

1,786.0000

1

AQEU

Genmab A/S

26/06/2024

3:38:28 PM

1,786.0000

19

CEUX

Genmab A/S

26/06/2024

3:38:28 PM

1,786.0000

1

AQEU

Genmab A/S

26/06/2024

3:40:25 PM

1,785.0000

7

AQEU

Genmab A/S

26/06/2024

3:40:25 PM

1,785.0000

7

AQEU

Genmab A/S

26/06/2024

3:40:25 PM

1,785.0000

9

AQEU

Genmab A/S

26/06/2024

3:40:25 PM

1,785.0000

7

AQEU

Genmab A/S

26/06/2024

3:40:25 PM

1,785.0000

7

AQEU

Genmab A/S

26/06/2024

3:40:25 PM

1,785.0000

54

XCSE

Genmab A/S

26/06/2024

3:40:25 PM

1,785.0000

14

XCSE

Genmab A/S

26/06/2024

3:40:25 PM

1,785.0000

19

XCSE

Genmab A/S

26/06/2024

3:40:25 PM

1,785.0000

59

XCSE

Genmab A/S

26/06/2024

3:40:25 PM

1,785.0000

23

CEUX

Genmab A/S

26/06/2024

3:40:25 PM

1,785.0000

26

CEUX

Genmab A/S

26/06/2024

3:40:25 PM

1,785.0000

11

CEUX

Genmab A/S

26/06/2024

3:40:25 PM

1,785.0000

7

AQEU

Genmab A/S

26/06/2024

3:41:01 PM

1,787.5000

25

XCSE

Genmab A/S

26/06/2024

3:41:01 PM

1,787.5000

25

XCSE

Genmab A/S

26/06/2024

3:41:01 PM

1,787.5000

24

XCSE

Genmab A/S

26/06/2024

3:42:06 PM

1,787.5000

16

XCSE

Genmab A/S

26/06/2024

3:42:06 PM

1,787.5000

17

XCSE

Genmab A/S

26/06/2024

3:42:16 PM

1,787.5000

20

CEUX

Genmab A/S

26/06/2024

3:42:17 PM

1,787.5000

9

CEUX

Genmab A/S

26/06/2024

3:42:25 PM

1,787.5000

37

XCSE

Genmab A/S

26/06/2024

3:42:28 PM

1,787.0000

3

CEUX

Genmab A/S

26/06/2024

3:42:28 PM

1,787.0000

12

XCSE

Genmab A/S

26/06/2024

3:42:28 PM

1,787.0000

12

XCSE

Genmab A/S

26/06/2024

3:42:28 PM

1,787.0000

9

CEUX

Genmab A/S

26/06/2024

3:42:28 PM

1,787.0000

12

XCSE

Genmab A/S

26/06/2024

3:42:28 PM

1,787.0000

12

XCSE

Genmab A/S

26/06/2024

3:42:29 PM

1,787.0000

4

CEUX

Genmab A/S

26/06/2024

3:42:29 PM

1,787.0000

12

XCSE

Genmab A/S

26/06/2024

3:42:29 PM

1,787.0000

3

XCSE

Genmab A/S

26/06/2024

3:42:29 PM

1,787.0000

9

XCSE

Genmab A/S

26/06/2024

3:42:29 PM

1,787.0000

6

XCSE

172

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

3:42:29 PM

1,787.0000

8

CEUX

Genmab A/S

26/06/2024

3:42:29 PM

1,787.0000

12

CEUX

Genmab A/S

26/06/2024

3:42:30 PM

1,787.0000

12

XCSE

Genmab A/S

26/06/2024

3:42:30 PM

1,787.0000

6

XCSE

Genmab A/S

26/06/2024

3:42:31 PM

1,787.0000

6

XCSE

Genmab A/S

26/06/2024

3:42:31 PM

1,787.0000

11

CEUX

Genmab A/S

26/06/2024

3:42:31 PM

1,787.0000

2

XCSE

Genmab A/S

26/06/2024

3:42:31 PM

1,787.0000

8

XCSE

Genmab A/S

26/06/2024

3:42:31 PM

1,787.0000

2

XCSE

Genmab A/S

26/06/2024

3:42:54 PM

1,787.0000

6

XCSE

Genmab A/S

26/06/2024

3:43:19 PM

1,787.0000

4

CEUX

Genmab A/S

26/06/2024

3:43:19 PM

1,787.0000

11

CEUX

Genmab A/S

26/06/2024

3:43:19 PM

1,787.0000

3

CEUX

Genmab A/S

26/06/2024

3:43:19 PM

1,787.0000

10

XCSE

Genmab A/S

26/06/2024

3:43:19 PM

1,787.0000

8

XCSE

Genmab A/S

26/06/2024

3:43:19 PM

1,787.0000

8

XCSE

Genmab A/S

26/06/2024

3:43:19 PM

1,787.0000

16

XCSE

Genmab A/S

26/06/2024

3:43:19 PM

1,787.0000

16

XCSE

Genmab A/S

26/06/2024

3:43:19 PM

1,787.0000

16

XCSE

Genmab A/S

26/06/2024

3:43:19 PM

1,787.0000

12

CEUX

Genmab A/S

26/06/2024

3:43:21 PM

1,787.0000

16

XCSE

Genmab A/S

26/06/2024

3:43:39 PM

1,787.0000

18

XCSE

Genmab A/S

26/06/2024

3:43:39 PM

1,787.0000

32

XCSE

Genmab A/S

26/06/2024

3:43:39 PM

1,787.0000

17

XCSE

Genmab A/S

26/06/2024

3:44:30 PM

1,788.0000

40

CEUX

Genmab A/S

26/06/2024

3:44:39 PM

1,787.0000

4

AQEU

Genmab A/S

26/06/2024

3:44:39 PM

1,787.0000

17

AQEU

Genmab A/S

26/06/2024

3:44:39 PM

1,787.5000

9

CEUX

Genmab A/S

26/06/2024

3:44:39 PM

1,787.5000

5

CEUX

Genmab A/S

26/06/2024

3:44:39 PM

1,787.5000

9

CEUX

Genmab A/S

26/06/2024

3:44:39 PM

1,787.5000

9

CEUX

Genmab A/S

26/06/2024

3:44:39 PM

1,787.5000

9

CEUX

Genmab A/S

26/06/2024

3:44:39 PM

1,787.5000

1

CEUX

Genmab A/S

26/06/2024

3:44:39 PM

1,787.5000

9

CEUX

Genmab A/S

26/06/2024

3:44:39 PM

1,787.5000

9

CEUX

Genmab A/S

26/06/2024

3:44:39 PM

1,787.5000

2

AQEU

Genmab A/S

26/06/2024

3:44:39 PM

1,787.5000

42

AQEU

Genmab A/S

26/06/2024

3:44:39 PM

1,787.5000

10

XCSE

Genmab A/S

26/06/2024

3:44:39 PM

1,787.5000

10

XCSE

Genmab A/S

26/06/2024

3:44:39 PM

1,787.5000

37

XCSE

Genmab A/S

26/06/2024

3:44:39 PM

1,787.5000

7

XCSE

Genmab A/S

26/06/2024

3:44:39 PM

1,787.5000

3

XCSE

Genmab A/S

26/06/2024

3:44:39 PM

1,787.5000

44

XCSE

Genmab A/S

26/06/2024

3:44:39 PM

1,787.5000

10

XCSE

Genmab A/S

26/06/2024

3:44:39 PM

1,787.5000

17

XCSE

Genmab A/S

26/06/2024

3:44:39 PM

1,787.5000

10

XCSE

Genmab A/S

26/06/2024

3:44:39 PM

1,787.5000

10

XCSE

Genmab A/S

26/06/2024

3:44:39 PM

1,787.5000

10

XCSE

173

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

3:44:39 PM

1,787.0000

24

XCSE

Genmab A/S

26/06/2024

3:44:39 PM

1,787.0000

22

CEUX

Genmab A/S

26/06/2024

3:44:39 PM

1,787.0000

12

CEUX

Genmab A/S

26/06/2024

3:44:39 PM

1,787.0000

10

CEUX

Genmab A/S

26/06/2024

3:44:39 PM

1,787.0000

12

CEUX

Genmab A/S

26/06/2024

3:44:39 PM

1,787.0000

10

CEUX

Genmab A/S

26/06/2024

3:44:39 PM

1,787.0000

4

AQEU

Genmab A/S

26/06/2024

3:44:39 PM

1,787.0000

16

AQEU

Genmab A/S

26/06/2024

3:44:39 PM

1,787.0000

3

AQEU

Genmab A/S

26/06/2024

3:44:39 PM

1,787.0000

12

CEUX

Genmab A/S

26/06/2024

3:44:39 PM

1,787.0000

20

XCSE

Genmab A/S

26/06/2024

3:44:39 PM

1,787.0000

4

XCSE

Genmab A/S

26/06/2024

3:44:39 PM

1,787.0000

20

XCSE

Genmab A/S

26/06/2024

3:44:39 PM

1,787.0000

4

XCSE

Genmab A/S

26/06/2024

3:44:39 PM

1,787.0000

9

XCSE

Genmab A/S

26/06/2024

3:44:39 PM

1,787.0000

15

XCSE

Genmab A/S

26/06/2024

3:44:39 PM

1,787.5000

39

XCSE

Genmab A/S

26/06/2024

3:44:39 PM

1,787.5000

30

XCSE

Genmab A/S

26/06/2024

3:44:39 PM

1,787.5000

23

XCSE

Genmab A/S

26/06/2024

3:44:39 PM

1,787.0000

9

AQEU

Genmab A/S

26/06/2024

3:44:39 PM

1,787.0000

20

CEUX

Genmab A/S

26/06/2024

3:44:39 PM

1,787.0000

12

CEUX

Genmab A/S

26/06/2024

3:44:39 PM

1,787.0000

7

CEUX

Genmab A/S

26/06/2024

3:47:54 PM

1,789.5000

115

CEUX

Genmab A/S

26/06/2024

3:47:54 PM

1,789.5000

16

AQEU

Genmab A/S

26/06/2024

3:47:54 PM

1,789.5000

54

XCSE

Genmab A/S

26/06/2024

3:47:54 PM

1,789.5000

49

XCSE

Genmab A/S

26/06/2024

3:47:54 PM

1,789.5000

24

XCSE

Genmab A/S

26/06/2024

3:47:54 PM

1,788.5000

6

CEUX

Genmab A/S

26/06/2024

3:47:54 PM

1,788.5000

3

AQEU

Genmab A/S

26/06/2024

3:47:54 PM

1,788.5000

24

XCSE

Genmab A/S

26/06/2024

3:47:55 PM

1,788.5000

24

XCSE

Genmab A/S

26/06/2024

3:47:55 PM

1,788.5000

15

CEUX

Genmab A/S

26/06/2024

3:47:55 PM

1,788.5000

24

XCSE

Genmab A/S

26/06/2024

3:50:12 PM

1,789.5000

36

CEUX

Genmab A/S

26/06/2024

3:50:12 PM

1,789.5000

12

CEUX

Genmab A/S

26/06/2024

3:50:12 PM

1,789.5000

14

CEUX

Genmab A/S

26/06/2024

3:50:20 PM

1,789.5000

10

CEUX

Genmab A/S

26/06/2024

3:50:20 PM

1,789.5000

16

CEUX

Genmab A/S

26/06/2024

3:50:20 PM

1,789.5000

26

CEUX

Genmab A/S

26/06/2024

3:50:20 PM

1,789.5000

4

AQEU

Genmab A/S

26/06/2024

3:50:20 PM

1,789.5000

4

AQEU

Genmab A/S

26/06/2024

3:50:20 PM

1,789.5000

4

AQEU

Genmab A/S

26/06/2024

3:50:20 PM

1,789.5000

4

AQEU

Genmab A/S

26/06/2024

3:50:20 PM

1,789.5000

4

AQEU

Genmab A/S

26/06/2024

3:50:20 PM

1,789.5000

29

XCSE

Genmab A/S

26/06/2024

3:50:20 PM

1,789.5000

29

XCSE

Genmab A/S

26/06/2024

3:50:20 PM

1,789.5000

16

XCSE

174

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

3:50:20 PM

1,789.5000

13

XCSE

Genmab A/S

26/06/2024

3:50:20 PM

1,789.5000

16

XCSE

Genmab A/S

26/06/2024

3:50:20 PM

1,789.5000

13

XCSE

Genmab A/S

26/06/2024

3:50:20 PM

1,789.5000

16

XCSE

Genmab A/S

26/06/2024

3:50:20 PM

1,789.5000

13

XCSE

Genmab A/S

26/06/2024

3:50:20 PM

1,789.5000

26

CEUX

Genmab A/S

26/06/2024

3:50:20 PM

1,789.5000

26

CEUX

Genmab A/S

26/06/2024

3:50:20 PM

1,789.5000

4

AQEU

Genmab A/S

26/06/2024

3:50:20 PM

1,789.5000

4

AQEU

Genmab A/S

26/06/2024

3:50:20 PM

1,789.5000

26

CEUX

Genmab A/S

26/06/2024

3:50:20 PM

1,789.5000

26

CEUX

Genmab A/S

26/06/2024

3:50:20 PM

1,789.5000

4

AQEU

Genmab A/S

26/06/2024

3:50:20 PM

1,789.5000

29

XCSE

Genmab A/S

26/06/2024

3:50:20 PM

1,789.5000

6

CEUX

Genmab A/S

26/06/2024

3:50:20 PM

1,789.5000

46

CEUX

Genmab A/S

26/06/2024

3:55:41 PM

1,789.0000

21

XCSE

Genmab A/S

26/06/2024

3:55:41 PM

1,789.0000

21

XCSE

Genmab A/S

26/06/2024

3:55:41 PM

1,789.0000

1

CEUX

Genmab A/S

26/06/2024

3:55:41 PM

1,789.0000

19

CEUX

Genmab A/S

26/06/2024

3:55:41 PM

1,789.0000

11

CEUX

Genmab A/S

26/06/2024

3:55:42 PM

1,789.0000

21

XCSE

Genmab A/S

26/06/2024

3:56:00 PM

1,788.5000

23

CEUX

Genmab A/S

26/06/2024

3:56:00 PM

1,788.5000

15

CEUX

Genmab A/S

26/06/2024

3:56:00 PM

1,788.5000

23

CEUX

Genmab A/S

26/06/2024

3:56:00 PM

1,788.5000

4

AQEU

Genmab A/S

26/06/2024

3:56:00 PM

1,788.5000

12

AQEU

Genmab A/S

26/06/2024

3:56:00 PM

1,788.5000

4

AQEU

Genmab A/S

26/06/2024

3:56:00 PM

1,788.5000

3

AQEU

Genmab A/S

26/06/2024

3:56:00 PM

1,788.5000

4

AQEU

Genmab A/S

26/06/2024

3:56:00 PM

1,788.5000

4

AQEU

Genmab A/S

26/06/2024

3:56:00 PM

1,788.5000

1

XCSE

Genmab A/S

26/06/2024

3:56:00 PM

1,788.5000

25

XCSE

Genmab A/S

26/06/2024

3:56:00 PM

1,788.5000

39

XCSE

Genmab A/S

26/06/2024

3:56:00 PM

1,788.5000

20

CEUX

Genmab A/S

26/06/2024

3:56:00 PM

1,788.5000

3

CEUX

Genmab A/S

26/06/2024

3:56:00 PM

1,788.5000

14

CEUX

Genmab A/S

26/06/2024

3:56:00 PM

1,788.5000

26

XCSE

Genmab A/S

26/06/2024

3:56:00 PM

1,788.5000

20

XCSE

Genmab A/S

26/06/2024

3:56:00 PM

1,788.5000

2

CEUX

Genmab A/S

26/06/2024

3:56:00 PM

1,788.5000

1

CEUX

Genmab A/S

26/06/2024

3:56:00 PM

1,788.5000

4

AQEU

Genmab A/S

26/06/2024

3:56:00 PM

1,788.5000

4

AQEU

Genmab A/S

26/06/2024

3:56:00 PM

1,788.5000

4

AQEU

Genmab A/S

26/06/2024

3:56:00 PM

1,788.0000

22

CEUX

Genmab A/S

26/06/2024

3:56:00 PM

1,788.0000

4

AQEU

Genmab A/S

26/06/2024

3:56:00 PM

1,788.0000

4

AQEU

Genmab A/S

26/06/2024

3:56:00 PM

1,788.0000

4

AQEU

Genmab A/S

26/06/2024

3:56:00 PM

1,788.0000

25

XCSE

175

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

3:56:00 PM

1,788.0000

23

XCSE

Genmab A/S

26/06/2024

3:56:00 PM

1,788.0000

2

XCSE

Genmab A/S

26/06/2024

3:56:00 PM

1,788.0000

22

XCSE

Genmab A/S

26/06/2024

3:56:00 PM

1,788.0000

17

XCSE

Genmab A/S

26/06/2024

3:56:00 PM

1,788.0000

8

XCSE

Genmab A/S

26/06/2024

3:56:00 PM

1,788.0000

3

CEUX

Genmab A/S

26/06/2024

3:56:00 PM

1,788.0000

19

CEUX

Genmab A/S

26/06/2024

3:56:00 PM

1,788.0000

4

AQEU

Genmab A/S

26/06/2024

3:56:01 PM

1,788.0000

25

XCSE

Genmab A/S

26/06/2024

3:56:02 PM

1,788.0000

22

CEUX

Genmab A/S

26/06/2024

3:56:02 PM

1,788.0000

1

CEUX

Genmab A/S

26/06/2024

3:56:02 PM

1,788.0000

18

CEUX

Genmab A/S

26/06/2024

3:56:02 PM

1,788.0000

3

CEUX

Genmab A/S

26/06/2024

3:56:02 PM

1,788.0000

15

XCSE

Genmab A/S

26/06/2024

3:56:02 PM

1,788.0000

10

XCSE

Genmab A/S

26/06/2024

3:56:02 PM

1,788.0000

15

XCSE

Genmab A/S

26/06/2024

3:56:02 PM

1,788.0000

2

XCSE

Genmab A/S

26/06/2024

3:56:02 PM

1,788.0000

6

XCSE

Genmab A/S

26/06/2024

3:56:02 PM

1,788.0000

22

CEUX

Genmab A/S

26/06/2024

3:56:03 PM

1,788.0000

22

CEUX

Genmab A/S

26/06/2024

3:56:03 PM

1,788.0000

22

CEUX

Genmab A/S

26/06/2024

3:56:03 PM

1,788.0000

3

CEUX

Genmab A/S

26/06/2024

3:56:03 PM

1,788.0000

4

AQEU

Genmab A/S

26/06/2024

3:56:03 PM

1,788.0000

8

AQEU

Genmab A/S

26/06/2024

3:56:03 PM

1,788.0000

20

CEUX

Genmab A/S

26/06/2024

3:56:03 PM

1,787.5000

21

CEUX

Genmab A/S

26/06/2024

3:56:03 PM

1,787.5000

21

CEUX

Genmab A/S

26/06/2024

3:56:03 PM

1,787.5000

4

AQEU

Genmab A/S

26/06/2024

3:56:03 PM

1,787.5000

24

XCSE

Genmab A/S

26/06/2024

3:56:03 PM

1,787.5000

15

CEUX

Genmab A/S

26/06/2024

3:56:03 PM

1,787.5000

6

CEUX

Genmab A/S

26/06/2024

4:01:23 PM

1,788.5000

25

XCSE

Genmab A/S

26/06/2024

4:01:23 PM

1,788.5000

14

XCSE

Genmab A/S

26/06/2024

4:02:42 PM

1,791.5000

36

CEUX

Genmab A/S

26/06/2024

4:02:42 PM

1,791.5000

4

CEUX

Genmab A/S

26/06/2024

4:02:42 PM

1,791.5000

9

AQEU

Genmab A/S

26/06/2024

4:02:42 PM

1,791.5000

1

AQEU

Genmab A/S

26/06/2024

4:02:42 PM

1,791.5000

2

AQEU

Genmab A/S

26/06/2024

4:02:42 PM

1,791.5000

9

TQEX

Genmab A/S

26/06/2024

4:02:42 PM

1,791.5000

1

TQEX

Genmab A/S

26/06/2024

4:02:42 PM

1,791.5000

2

TQEX

Genmab A/S

26/06/2024

4:02:42 PM

1,791.5000

16

XCSE

Genmab A/S

26/06/2024

4:02:42 PM

1,791.5000

6

XCSE

Genmab A/S

26/06/2024

4:02:45 PM

1,791.5000

5

CEUX

Genmab A/S

26/06/2024

4:02:45 PM

1,791.5000

2

CEUX

Genmab A/S

26/06/2024

4:02:45 PM

1,791.5000

4

CEUX

Genmab A/S

26/06/2024

4:02:45 PM

1,791.5000

2

AQEU

Genmab A/S

26/06/2024

4:02:45 PM

1,791.5000

2

AQEU

176

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

4:02:45 PM

1,791.5000

9

AQEU

Genmab A/S

26/06/2024

4:02:45 PM

1,791.5000

16

AQEU

Genmab A/S

26/06/2024

4:02:46 PM

1,791.0000

11

XCSE

Genmab A/S

26/06/2024

4:02:47 PM

1,791.0000

3

CEUX

Genmab A/S

26/06/2024

4:02:47 PM

1,791.0000

11

XCSE

Genmab A/S

26/06/2024

4:02:48 PM

1,791.0000

11

XCSE

Genmab A/S

26/06/2024

4:03:07 PM

1,791.5000

4

TQEX

Genmab A/S

26/06/2024

4:03:11 PM

1,791.5000

4

AQEU

Genmab A/S

26/06/2024

4:03:11 PM

1,791.5000

9

AQEU

Genmab A/S

26/06/2024

4:03:14 PM

1,791.5000

9

AQEU

Genmab A/S

26/06/2024

4:03:14 PM

1,791.5000

2

AQEU

Genmab A/S

26/06/2024

4:03:14 PM

1,791.5000

1

AQEU

Genmab A/S

26/06/2024

4:03:14 PM

1,791.5000

3

TQEX

Genmab A/S

26/06/2024

4:03:14 PM

1,791.5000

9

TQEX

Genmab A/S

26/06/2024

4:03:14 PM

1,791.5000

2

TQEX

Genmab A/S

26/06/2024

4:03:14 PM

1,791.5000

2

TQEX

Genmab A/S

26/06/2024

4:03:19 PM

1,791.5000

3

AQEU

Genmab A/S

26/06/2024

4:03:19 PM

1,791.5000

9

AQEU

Genmab A/S

26/06/2024

4:03:19 PM

1,791.5000

1

AQEU

Genmab A/S

26/06/2024

4:03:23 PM

1,791.5000

1

AQEU

Genmab A/S

26/06/2024

4:03:23 PM

1,791.5000

1

AQEU

Genmab A/S

26/06/2024

4:03:23 PM

1,791.5000

9

AQEU

Genmab A/S

26/06/2024

4:03:23 PM

1,791.5000

2

TQEX

Genmab A/S

26/06/2024

4:03:23 PM

1,791.5000

9

TQEX

Genmab A/S

26/06/2024

4:03:23 PM

1,791.5000

2

TQEX

Genmab A/S

26/06/2024

4:03:27 PM

1,791.5000

1

AQEU

Genmab A/S

26/06/2024

4:03:27 PM

1,791.5000

1

AQEU

Genmab A/S

26/06/2024

4:03:29 PM

1,791.5000

2

AQEU

Genmab A/S

26/06/2024

4:03:29 PM

1,791.5000

1

AQEU

Genmab A/S

26/06/2024

4:03:34 PM

1,791.5000

2

AQEU

Genmab A/S

26/06/2024

4:03:34 PM

1,791.5000

2

AQEU

Genmab A/S

26/06/2024

4:03:34 PM

1,791.5000

9

AQEU

Genmab A/S

26/06/2024

4:03:40 PM

1,791.0000

8

XCSE

Genmab A/S

26/06/2024

4:03:40 PM

1,791.0000

2

XCSE

Genmab A/S

26/06/2024

4:03:40 PM

1,791.0000

10

CEUX

Genmab A/S

26/06/2024

4:03:40 PM

1,791.0000

10

CEUX

Genmab A/S

26/06/2024

4:03:40 PM

1,791.0000

2

AQEU

Genmab A/S

26/06/2024

4:03:41 PM

1,791.0000

9

CEUX

Genmab A/S

26/06/2024

4:03:41 PM

1,791.0000

10

XCSE

Genmab A/S

26/06/2024

4:03:41 PM

1,791.0000

1

CEUX

Genmab A/S

26/06/2024

4:03:41 PM

1,791.0000

2

AQEU

Genmab A/S

26/06/2024

4:03:42 PM

1,791.0000

10

CEUX

Genmab A/S

26/06/2024

4:03:42 PM

1,791.0000

10

XCSE

Genmab A/S

26/06/2024

4:03:42 PM

1,791.0000

10

XCSE

Genmab A/S

26/06/2024

4:03:59 PM

1,791.0000

34

XCSE

Genmab A/S

26/06/2024

4:04:05 PM

1,791.0000

39

CEUX

Genmab A/S

26/06/2024

4:04:16 PM

1,791.0000

36

XCSE

Genmab A/S

26/06/2024

4:04:17 PM

1,790.5000

20

CEUX

177

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

4:04:17 PM

1,790.5000

14

CEUX

Genmab A/S

26/06/2024

4:04:17 PM

1,790.5000

6

CEUX

Genmab A/S

26/06/2024

4:04:17 PM

1,790.5000

14

CEUX

Genmab A/S

26/06/2024

4:04:17 PM

1,790.5000

3

AQEU

Genmab A/S

26/06/2024

4:04:17 PM

1,790.5000

21

XCSE

Genmab A/S

26/06/2024

4:04:17 PM

1,790.5000

21

XCSE

Genmab A/S

26/06/2024

4:04:17 PM

1,790.5000

6

XCSE

Genmab A/S

26/06/2024

4:04:17 PM

1,790.5000

21

XCSE

Genmab A/S

26/06/2024

4:04:17 PM

1,790.5000

12

XCSE

Genmab A/S

26/06/2024

4:04:17 PM

1,790.5000

21

XCSE

Genmab A/S

26/06/2024

4:04:17 PM

1,790.5000

39

XCSE

Genmab A/S

26/06/2024

4:04:17 PM

1,790.5000

20

CEUX

Genmab A/S

26/06/2024

4:04:17 PM

1,790.5000

3

AQEU

Genmab A/S

26/06/2024

4:04:17 PM

1,790.5000

4

XCSE

Genmab A/S

26/06/2024

4:04:18 PM

1,790.5000

4

CEUX

Genmab A/S

26/06/2024

4:04:18 PM

1,790.5000

17

XCSE

Genmab A/S

26/06/2024

4:04:50 PM

1,790.5000

11

XCSE

Genmab A/S

26/06/2024

4:05:03 PM

1,790.5000

40

XCSE

Genmab A/S

26/06/2024

4:05:03 PM

1,790.5000

26

CEUX

Genmab A/S

26/06/2024

4:05:07 PM

1,790.5000

3

CEUX

Genmab A/S

26/06/2024

4:05:07 PM

1,790.5000

13

XCSE

Genmab A/S

26/06/2024

4:05:08 PM

1,790.5000

13

XCSE

Genmab A/S

26/06/2024

4:05:09 PM

1,790.5000

13

XCSE

Genmab A/S

26/06/2024

4:05:26 PM

1,790.0000

3

AQEU

Genmab A/S

26/06/2024

4:05:26 PM

1,790.0000

7

AQEU

Genmab A/S

26/06/2024

4:05:26 PM

1,790.0000

3

CEUX

Genmab A/S

26/06/2024

4:05:26 PM

1,790.0000

12

CEUX

Genmab A/S

26/06/2024

4:05:26 PM

1,790.0000

3

AQEU

Genmab A/S

26/06/2024

4:05:26 PM

1,790.0000

7

AQEU

Genmab A/S

26/06/2024

4:05:38 PM

1,790.0000

7

CEUX

Genmab A/S

26/06/2024

4:05:38 PM

1,790.0000

23

XCSE

Genmab A/S

26/06/2024

4:06:28 PM

1,790.5000

12

CEUX

Genmab A/S

26/06/2024

4:06:28 PM

1,790.5000

2

CEUX

Genmab A/S

26/06/2024

4:06:28 PM

1,790.5000

11

TQEX

Genmab A/S

26/06/2024

4:06:28 PM

1,790.5000

8

XCSE

Genmab A/S

26/06/2024

4:06:36 PM

1,790.5000

3

XCSE

Genmab A/S

26/06/2024

4:06:36 PM

1,790.5000

9

XCSE

Genmab A/S

26/06/2024

4:06:48 PM

1,790.5000

27

CEUX

Genmab A/S

26/06/2024

4:06:48 PM

1,790.5000

13

CEUX

Genmab A/S

26/06/2024

4:06:50 PM

1,790.5000

36

CEUX

Genmab A/S

26/06/2024

4:07:14 PM

1,790.5000

72

AQEU

Genmab A/S

26/06/2024

4:07:19 PM

1,790.5000

20

CEUX

Genmab A/S

26/06/2024

4:07:20 PM

1,790.5000

11

CEUX

Genmab A/S

26/06/2024

4:07:22 PM

1,790.5000

5

CEUX

Genmab A/S

26/06/2024

4:07:31 PM

1,790.5000

13

CEUX

Genmab A/S

26/06/2024

4:07:31 PM

1,790.5000

22

CEUX

Genmab A/S

26/06/2024

4:07:41 PM

1,790.5000

8

CEUX

Genmab A/S

26/06/2024

4:07:41 PM

1,790.5000

12

CEUX

178

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

4:07:41 PM

1,790.5000

2

AQEU

Genmab A/S

26/06/2024

4:07:41 PM

1,790.5000

11

AQEU

Genmab A/S

26/06/2024

4:07:41 PM

1,790.5000

5

TQEX

Genmab A/S

26/06/2024

4:07:51 PM

1,790.5000

3

CEUX

Genmab A/S

26/06/2024

4:07:51 PM

1,790.5000

12

CEUX

Genmab A/S

26/06/2024

4:07:51 PM

1,790.5000

9

AQEU

Genmab A/S

26/06/2024

4:07:51 PM

1,790.5000

8

TQEX

Genmab A/S

26/06/2024

4:07:51 PM

1,790.5000

6

XCSE

Genmab A/S

26/06/2024

4:08:11 PM

1,792.0000

72

AQEU

Genmab A/S

26/06/2024

4:08:20 PM

1,792.5000

14

XCSE

Genmab A/S

26/06/2024

4:09:15 PM

1,793.0000

21

CEUX

Genmab A/S

26/06/2024

4:09:15 PM

1,793.0000

21

CEUX

Genmab A/S

26/06/2024

4:09:15 PM

1,793.0000

21

CEUX

Genmab A/S

26/06/2024

4:09:15 PM

1,793.0000

5

CEUX

Genmab A/S

26/06/2024

4:09:15 PM

1,793.0000

15

CEUX

Genmab A/S

26/06/2024

4:09:15 PM

1,793.0000

22

XCSE

Genmab A/S

26/06/2024

4:09:15 PM

1,793.0000

22

XCSE

Genmab A/S

26/06/2024

4:09:15 PM

1,793.0000

22

XCSE

Genmab A/S

26/06/2024

4:09:15 PM

1,793.0000

9

XCSE

Genmab A/S

26/06/2024

4:09:15 PM

1,793.0000

4

XCSE

Genmab A/S

26/06/2024

4:09:15 PM

1,793.0000

9

XCSE

Genmab A/S

26/06/2024

4:09:15 PM

1,792.5000

24

XCSE

Genmab A/S

26/06/2024

4:09:15 PM

1,792.5000

12

XCSE

Genmab A/S

26/06/2024

4:09:15 PM

1,792.5000

16

XCSE

Genmab A/S

26/06/2024

4:09:15 PM

1,793.0000

4

XCSE

Genmab A/S

26/06/2024

4:09:15 PM

1,792.5000

22

CEUX

Genmab A/S

26/06/2024

4:09:15 PM

1,792.5000

12

CEUX

Genmab A/S

26/06/2024

4:09:15 PM

1,792.5000

22

CEUX

Genmab A/S

26/06/2024

4:09:15 PM

1,792.5000

12

CEUX

Genmab A/S

26/06/2024

4:09:15 PM

1,792.5000

6

CEUX

Genmab A/S

26/06/2024

4:09:15 PM

1,792.5000

3

CEUX

Genmab A/S

26/06/2024

4:09:15 PM

1,792.5000

12

CEUX

Genmab A/S

26/06/2024

4:09:15 PM

1,792.5000

4

AQEU

Genmab A/S

26/06/2024

4:09:16 PM

1,792.5000

12

XCSE

Genmab A/S

26/06/2024

4:09:16 PM

1,792.5000

12

CEUX

Genmab A/S

26/06/2024

4:09:16 PM

1,792.5000

27

CEUX

Genmab A/S

26/06/2024

4:09:16 PM

1,792.5000

23

CEUX

Genmab A/S

26/06/2024

4:09:16 PM

1,792.5000

12

CEUX

Genmab A/S

26/06/2024

4:09:16 PM

1,792.5000

9

CEUX

Genmab A/S

26/06/2024

4:09:16 PM

1,792.5000

12

CEUX

Genmab A/S

26/06/2024

4:09:16 PM

1,792.5000

12

CEUX

Genmab A/S

26/06/2024

4:09:16 PM

1,792.5000

12

XCSE

Genmab A/S

26/06/2024

4:09:16 PM

1,792.5000

12

CEUX

Genmab A/S

26/06/2024

4:09:20 PM

1,792.0000

52

XCSE

Genmab A/S

26/06/2024

4:09:20 PM

1,792.0000

47

CEUX

Genmab A/S

26/06/2024

4:09:20 PM

1,792.0000

52

XCSE

Genmab A/S

26/06/2024

4:09:20 PM

1,792.0000

11

CEUX

Genmab A/S

26/06/2024

4:09:21 PM

1,792.0000

52

XCSE

179

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

4:10:55 PM

1,793.0000

18

CEUX

Genmab A/S

26/06/2024

4:11:34 PM

1,793.0000

19

XCSE

Genmab A/S

26/06/2024

4:11:34 PM

1,793.0000

18

CEUX

Genmab A/S

26/06/2024

4:11:34 PM

1,793.0000

18

CEUX

Genmab A/S

26/06/2024

4:11:34 PM

1,793.0000

19

XCSE

Genmab A/S

26/06/2024

4:12:10 PM

1,795.0000

16

AQEU

Genmab A/S

26/06/2024

4:12:10 PM

1,795.0000

9

XCSE

Genmab A/S

26/06/2024

4:12:11 PM

1,795.0000

7

CEUX

Genmab A/S

26/06/2024

4:12:11 PM

1,795.0000

30

CEUX

Genmab A/S

26/06/2024

4:12:11 PM

1,794.5000

2

CEUX

Genmab A/S

26/06/2024

4:12:11 PM

1,794.5000

3

CEUX

Genmab A/S

26/06/2024

4:12:11 PM

1,794.5000

15

CEUX

Genmab A/S

26/06/2024

4:12:11 PM

1,794.5000

26

XCSE

Genmab A/S

26/06/2024

4:12:11 PM

1,794.5000

16

CEUX

Genmab A/S

26/06/2024

4:12:11 PM

1,794.5000

8

CEUX

Genmab A/S

26/06/2024

4:12:11 PM

1,794.5000

17

CEUX

Genmab A/S

26/06/2024

4:12:11 PM

1,794.5000

22

CEUX

Genmab A/S

26/06/2024

4:12:11 PM

1,794.5000

26

XCSE

Genmab A/S

26/06/2024

4:12:11 PM

1,794.5000

20

XCSE

Genmab A/S

26/06/2024

4:12:12 PM

1,794.5000

6

XCSE

Genmab A/S

26/06/2024

4:12:12 PM

1,794.5000

26

XCSE

Genmab A/S

26/06/2024

4:12:14 PM

1,794.5000

20

XCSE

Genmab A/S

26/06/2024

4:12:14 PM

1,794.5000

6

XCSE

Genmab A/S

26/06/2024

4:12:14 PM

1,794.5000

6

XCSE

Genmab A/S

26/06/2024

4:12:14 PM

1,794.5000

20

XCSE

Genmab A/S

26/06/2024

4:12:14 PM

1,794.5000

1

CEUX

Genmab A/S

26/06/2024

4:12:15 PM

1,794.5000

15

XCSE

Genmab A/S

26/06/2024

4:12:15 PM

1,794.5000

11

XCSE

Genmab A/S

26/06/2024

4:12:42 PM

1,795.0000

24

XCSE

Genmab A/S

26/06/2024

4:12:54 PM

1,795.0000

24

XCSE

Genmab A/S

26/06/2024

4:12:58 PM

1,795.0000

4

CEUX

Genmab A/S

26/06/2024

4:12:58 PM

1,795.0000

2

XCSE

Genmab A/S

26/06/2024

4:12:58 PM

1,795.0000

22

XCSE

Genmab A/S

26/06/2024

4:12:58 PM

1,795.0000

2

XCSE

Genmab A/S

26/06/2024

4:13:01 PM

1,795.0000

24

XCSE

Genmab A/S

26/06/2024

4:13:01 PM

1,795.0000

12

CEUX

Genmab A/S

26/06/2024

4:13:01 PM

1,795.0000

24

XCSE

Genmab A/S

26/06/2024

4:13:01 PM

1,793.5000

5

CEUX

Genmab A/S

26/06/2024

4:13:01 PM

1,793.5000

4

AQEU

Genmab A/S

26/06/2024

4:15:24 PM

1,795.0000

9

CEUX

Genmab A/S

26/06/2024

4:15:24 PM

1,795.0000

13

XCSE

Genmab A/S

26/06/2024

4:15:24 PM

1,795.0000

3

CEUX

Genmab A/S

26/06/2024

4:15:24 PM

1,795.0000

13

XCSE

Genmab A/S

26/06/2024

4:15:24 PM

1,795.0000

12

CEUX

Genmab A/S

26/06/2024

4:15:25 PM

1,795.0000

5

CEUX

Genmab A/S

26/06/2024

4:15:25 PM

1,795.0000

13

XCSE

Genmab A/S

26/06/2024

4:16:04 PM

1,795.0000

7

CEUX

Genmab A/S

26/06/2024

4:16:04 PM

1,795.0000

13

XCSE

180

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

4:16:04 PM

1,795.0000

13

XCSE

Genmab A/S

26/06/2024

4:16:04 PM

1,795.0000

13

XCSE

Genmab A/S

26/06/2024

4:16:04 PM

1,795.0000

12

CEUX

Genmab A/S

26/06/2024

4:16:04 PM

1,795.0000

12

CEUX

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

10

CEUX

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

7

CEUX

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

3

CEUX

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

10

CEUX

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

10

CEUX

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

10

CEUX

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

6

CEUX

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

10

CEUX

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

5

CEUX

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

2

AQEU

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

11

XCSE

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

11

XCSE

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

19

XCSE

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

19

XCSE

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

11

XCSE

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

5

XCSE

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

11

XCSE

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

35

XCSE

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

11

XCSE

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

10

CEUX

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

4

CEUX

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

2

AQEU

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

10

CEUX

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

10

CEUX

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

10

CEUX

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

4

CEUX

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

10

CEUX

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

10

CEUX

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

11

XCSE

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

11

XCSE

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

11

XCSE

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

11

XCSE

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

11

XCSE

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

10

CEUX

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

10

CEUX

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

10

CEUX

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

2

AQEU

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

11

XCSE

Genmab A/S

26/06/2024

4:18:18 PM

1,794.5000

11

XCSE

Genmab A/S

26/06/2024

4:21:31 PM

1,795.0000

34

CEUX

Genmab A/S

26/06/2024

4:21:33 PM

1,794.5000

27

CEUX

Genmab A/S

26/06/2024

4:21:33 PM

1,794.5000

1

CEUX

Genmab A/S

26/06/2024

4:21:33 PM

1,794.5000

21

CEUX

Genmab A/S

26/06/2024

4:21:33 PM

1,794.5000

3

AQEU

181

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

4:21:33 PM

1,794.5000

22

XCSE

Genmab A/S

26/06/2024

4:21:33 PM

1,794.5000

7

XCSE

Genmab A/S

26/06/2024

4:21:33 PM

1,794.5000

22

XCSE

Genmab A/S

26/06/2024

4:21:33 PM

1,794.5000

29

XCSE

Genmab A/S

26/06/2024

4:21:33 PM

1,794.5000

29

XCSE

Genmab A/S

26/06/2024

4:21:33 PM

1,794.5000

5

CEUX

Genmab A/S

26/06/2024

4:21:33 PM

1,794.5000

27

CEUX

Genmab A/S

26/06/2024

4:21:33 PM

1,794.5000

29

XCSE

Genmab A/S

26/06/2024

4:21:34 PM

1,794.5000

19

CEUX

Genmab A/S

26/06/2024

4:21:34 PM

1,794.5000

29

XCSE

Genmab A/S

26/06/2024

4:21:34 PM

1,794.5000

8

CEUX

Genmab A/S

26/06/2024

4:21:34 PM

1,794.5000

17

XCSE

Genmab A/S

26/06/2024

4:21:34 PM

1,794.5000

12

XCSE

Genmab A/S

26/06/2024

4:21:35 PM

1,794.5000

29

XCSE

Genmab A/S

26/06/2024

4:21:35 PM

1,794.5000

6

XCSE

Genmab A/S

26/06/2024

4:21:35 PM

1,794.5000

23

XCSE

Genmab A/S

26/06/2024

4:21:35 PM

1,794.5000

5

XCSE

Genmab A/S

26/06/2024

4:21:35 PM

1,794.5000

23

XCSE

Genmab A/S

26/06/2024

4:21:35 PM

1,794.5000

6

XCSE

Genmab A/S

26/06/2024

4:21:35 PM

1,794.5000

9

XCSE

Genmab A/S

26/06/2024

4:21:35 PM

1,794.5000

11

XCSE

Genmab A/S

26/06/2024

4:21:35 PM

1,794.5000

9

CEUX

Genmab A/S

26/06/2024

4:23:23 PM

1,795.0000

15

AQEU

Genmab A/S

26/06/2024

4:23:23 PM

1,795.0000

2

AQEU

Genmab A/S

26/06/2024

4:23:23 PM

1,795.0000

15

AQEU

Genmab A/S

26/06/2024

4:23:23 PM

1,795.0000

1

AQEU

Genmab A/S

26/06/2024

4:23:28 PM

1,795.0000

15

AQEU

Genmab A/S

26/06/2024

4:23:28 PM

1,795.0000

1

AQEU

Genmab A/S

26/06/2024

4:23:28 PM

1,795.0000

1

AQEU

Genmab A/S

26/06/2024

4:23:33 PM

1,795.0000

15

AQEU

Genmab A/S

26/06/2024

4:23:33 PM

1,795.0000

1

AQEU

Genmab A/S

26/06/2024

4:23:38 PM

1,795.0000

6

AQEU

Genmab A/S

26/06/2024

4:23:38 PM

1,795.0000

1

AQEU

Genmab A/S

26/06/2024

4:23:38 PM

1,795.0000

1

AQEU

Genmab A/S

26/06/2024

4:23:43 PM

1,795.0000

1

AQEU

Genmab A/S

26/06/2024

4:23:46 PM

1,795.0000

6

AQEU

Genmab A/S

26/06/2024

4:23:46 PM

1,795.0000

2

AQEU

Genmab A/S

26/06/2024

4:23:46 PM

1,795.0000

1

AQEU

Genmab A/S

26/06/2024

4:23:46 PM

1,795.0000

15

AQEU

Genmab A/S

26/06/2024

4:23:51 PM

1,795.0000

1

AQEU

Genmab A/S

26/06/2024

4:23:51 PM

1,795.0000

2

AQEU

Genmab A/S

26/06/2024

4:23:51 PM

1,795.0000

15

AQEU

Genmab A/S

26/06/2024

4:23:54 PM

1,795.0000

15

AQEU

Genmab A/S

26/06/2024

4:23:54 PM

1,795.0000

2

AQEU

Genmab A/S

26/06/2024

4:23:54 PM

1,795.0000

2

AQEU

Genmab A/S

26/06/2024

4:23:58 PM

1,795.0000

15

AQEU

Genmab A/S

26/06/2024

4:23:58 PM

1,795.0000

2

AQEU

Genmab A/S

26/06/2024

4:24:01 PM

1,795.0000

1

AQEU

182

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

4:24:01 PM

1,795.0000

1

AQEU

Genmab A/S

26/06/2024

4:24:01 PM

1,795.0000

15

AQEU

Genmab A/S

26/06/2024

4:24:11 PM

1,795.0000

1

AQEU

Genmab A/S

26/06/2024

4:24:19 PM

1,795.0000

13

AQEU

Genmab A/S

26/06/2024

4:24:19 PM

1,795.0000

2

AQEU

Genmab A/S

26/06/2024

4:24:19 PM

1,795.0000

2

AQEU

Genmab A/S

26/06/2024

4:24:25 PM

1,795.0000

1

AQEU

Genmab A/S

26/06/2024

4:24:25 PM

1,795.0000

1

AQEU

Genmab A/S

26/06/2024

4:24:45 PM

1,794.5000

86

CEUX

Genmab A/S

26/06/2024

4:24:45 PM

1,794.5000

86

CEUX

Genmab A/S

26/06/2024

4:24:45 PM

1,794.5000

86

CEUX

Genmab A/S

26/06/2024

4:24:45 PM

1,794.5000

3

CEUX

Genmab A/S

26/06/2024

4:24:45 PM

1,794.5000

9

AQEU

Genmab A/S

26/06/2024

4:24:45 PM

1,794.5000

96

XCSE

Genmab A/S

26/06/2024

4:24:45 PM

1,794.5000

93

XCSE

Genmab A/S

26/06/2024

4:24:45 PM

1,794.5000

36

XCSE

Genmab A/S

26/06/2024

4:24:45 PM

1,794.5000

3

CEUX

Genmab A/S

26/06/2024

4:24:45 PM

1,794.5000

3

AQEU

Genmab A/S

26/06/2024

4:25:15 PM

1,795.0000

24

XCSE

Genmab A/S

26/06/2024

4:25:15 PM

1,795.0000

51

XCSE

Genmab A/S

26/06/2024

4:25:15 PM

1,795.0000

24

XCSE

Genmab A/S

26/06/2024

4:25:15 PM

1,795.0000

21

CEUX

Genmab A/S

26/06/2024

4:25:15 PM

1,795.0000

21

CEUX

Genmab A/S

26/06/2024

4:25:15 PM

1,795.0000

4

AQEU

Genmab A/S

26/06/2024

4:25:15 PM

1,795.0000

4

AQEU

Genmab A/S

26/06/2024

4:25:16 PM

1,795.0000

24

XCSE

Genmab A/S

26/06/2024

4:25:17 PM

1,795.0000

24

XCSE

Genmab A/S

26/06/2024

4:25:17 PM

1,795.0000

21

CEUX

Genmab A/S

26/06/2024

4:25:17 PM

1,795.0000

3

CEUX

Genmab A/S

26/06/2024

4:25:17 PM

1,795.0000

18

CEUX

Genmab A/S

26/06/2024

4:25:17 PM

1,795.0000

2

CEUX

Genmab A/S

26/06/2024

4:25:17 PM

1,795.0000

24

XCSE

Genmab A/S

26/06/2024

4:25:18 PM

1,795.0000

21

CEUX

Genmab A/S

26/06/2024

4:25:18 PM

1,795.0000

5

CEUX

Genmab A/S

26/06/2024

4:25:18 PM

1,795.0000

18

XCSE

Genmab A/S

26/06/2024

4:25:18 PM

1,795.0000

16

CEUX

Genmab A/S

26/06/2024

4:25:18 PM

1,795.0000

36

CEUX

Genmab A/S

26/06/2024

4:25:18 PM

1,795.0000

1

AQEU

Genmab A/S

26/06/2024

4:25:18 PM

1,795.0000

1

AQEU

Genmab A/S

26/06/2024

4:25:18 PM

1,794.5000

22

XCSE

Genmab A/S

26/06/2024

4:25:18 PM

1,795.0000

39

XCSE

Genmab A/S

26/06/2024

4:25:18 PM

1,795.0000

2

XCSE

Genmab A/S

26/06/2024

4:25:18 PM

1,794.5000

21

CEUX

Genmab A/S

26/06/2024

4:25:18 PM

1,794.5000

5

CEUX

Genmab A/S

26/06/2024

4:25:18 PM

1,794.5000

2

CEUX

Genmab A/S

26/06/2024

4:25:18 PM

1,794.5000

22

XCSE

Genmab A/S

26/06/2024

4:25:19 PM

1,794.5000

22

XCSE

Genmab A/S

26/06/2024

4:25:20 PM

1,794.5000

3

CEUX

183

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

4:26:38 PM

1,794.0000

6

CEUX

Genmab A/S

26/06/2024

4:26:38 PM

1,794.0000

4

CEUX

Genmab A/S

26/06/2024

4:26:38 PM

1,794.0000

8

CEUX

Genmab A/S

26/06/2024

4:26:39 PM

1,794.0000

2

CEUX

Genmab A/S

26/06/2024

4:26:39 PM

1,794.0000

11

XCSE

Genmab A/S

26/06/2024

4:26:40 PM

1,794.0000

2

CEUX

Genmab A/S

26/06/2024

4:26:40 PM

1,794.0000

11

XCSE

Genmab A/S

26/06/2024

4:26:40 PM

1,794.0000

11

XCSE

Genmab A/S

26/06/2024

4:27:19 PM

1,794.0000

25

XCSE

Genmab A/S

26/06/2024

4:27:19 PM

1,794.0000

13

XCSE

Genmab A/S

26/06/2024

4:27:19 PM

1,794.0000

25

XCSE

Genmab A/S

26/06/2024

4:27:19 PM

1,794.0000

25

XCSE

Genmab A/S

26/06/2024

4:27:20 PM

1,794.0000

25

XCSE

Genmab A/S

26/06/2024

4:28:02 PM

1,793.5000

22

XCSE

Genmab A/S

26/06/2024

4:28:02 PM

1,793.5000

39

XCSE

Genmab A/S

26/06/2024

4:28:02 PM

1,793.5000

22

XCSE

Genmab A/S

26/06/2024

4:28:02 PM

1,793.5000

12

XCSE

Genmab A/S

26/06/2024

4:28:02 PM

1,793.5000

10

XCSE

Genmab A/S

26/06/2024

4:28:02 PM

1,793.5000

4

XCSE

Genmab A/S

26/06/2024

4:28:02 PM

1,793.5000

18

XCSE

Genmab A/S

26/06/2024

4:28:02 PM

1,793.5000

4

XCSE

Genmab A/S

26/06/2024

4:28:03 PM

1,793.5000

9

CEUX

Genmab A/S

26/06/2024

4:28:03 PM

1,793.5000

9

CEUX

Genmab A/S

26/06/2024

4:28:03 PM

1,793.5000

18

XCSE

Genmab A/S

26/06/2024

4:28:03 PM

1,793.5000

10

XCSE

Genmab A/S

26/06/2024

4:28:03 PM

1,793.5000

22

XCSE

Genmab A/S

26/06/2024

4:28:03 PM

1,793.5000

10

XCSE

Genmab A/S

26/06/2024

4:28:03 PM

1,793.5000

9

CEUX

Genmab A/S

26/06/2024

4:28:04 PM

1,793.5000

5

CEUX

Genmab A/S

26/06/2024

4:28:04 PM

1,793.5000

22

XCSE

Genmab A/S

26/06/2024

4:28:04 PM

1,793.5000

10

XCSE

Genmab A/S

26/06/2024

4:28:35 PM

1,793.0000

23

XCSE

Genmab A/S

26/06/2024

4:28:35 PM

1,793.0000

15

XCSE

Genmab A/S

26/06/2024

4:28:35 PM

1,793.0000

8

XCSE

Genmab A/S

26/06/2024

4:28:36 PM

1,793.0000

14

XCSE

Genmab A/S

26/06/2024

4:29:08 PM

1,792.5000

7

CEUX

Genmab A/S

26/06/2024

4:29:09 PM

1,792.5000

11

XCSE

Genmab A/S

26/06/2024

4:29:10 PM

1,792.5000

3

CEUX

Genmab A/S

26/06/2024

4:29:10 PM

1,792.5000

3

XCSE

Genmab A/S

26/06/2024

4:29:10 PM

1,792.5000

14

XCSE

Genmab A/S

26/06/2024

4:30:00 PM

1,791.5000

38

XCSE

Genmab A/S

26/06/2024

4:30:01 PM

1,791.5000

16

XCSE

Genmab A/S

26/06/2024

4:30:02 PM

1,791.5000

39

XCSE

Genmab A/S

26/06/2024

4:30:03 PM

1,791.5000

15

XCSE

Genmab A/S

26/06/2024

4:30:04 PM

1,791.5000

43

XCSE

Genmab A/S

26/06/2024

4:30:04 PM

1,791.5000

11

XCSE

Genmab A/S

26/06/2024

4:32:05 PM

1,795.0000

15

AQEU

Genmab A/S

26/06/2024

4:32:05 PM

1,795.0000

16

AQEU

184

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

4:32:05 PM

1,795.0000

1

AQEU

Genmab A/S

26/06/2024

4:32:05 PM

1,795.0000

2

AQEU

Genmab A/S

26/06/2024

4:32:08 PM

1,795.0000

16

AQEU

Genmab A/S

26/06/2024

4:32:08 PM

1,795.0000

2

AQEU

Genmab A/S

26/06/2024

4:32:08 PM

1,795.0000

2

AQEU

Genmab A/S

26/06/2024

4:32:08 PM

1,795.0000

50

AQEU

Genmab A/S

26/06/2024

4:32:08 PM

1,795.0000

8

AQEU

Genmab A/S

26/06/2024

4:32:08 PM

1,794.5000

150

XCSE

Genmab A/S

26/06/2024

4:32:08 PM

1,794.5000

16

XCSE

Genmab A/S

26/06/2024

4:32:16 PM

1,794.0000

108

XCSE

Genmab A/S

26/06/2024

4:32:16 PM

1,794.0000

23

XCSE

Genmab A/S

26/06/2024

4:32:16 PM

1,794.0000

11

XCSE

Genmab A/S

26/06/2024

4:32:16 PM

1,794.0000

23

XCSE

Genmab A/S

26/06/2024

4:32:16 PM

1,794.0000

23

XCSE

Genmab A/S

26/06/2024

4:33:00 PM

1,794.0000

85

XCSE

Genmab A/S

26/06/2024

4:33:00 PM

1,794.0000

131

XCSE

Genmab A/S

26/06/2024

4:33:00 PM

1,794.0000

40

XCSE

Genmab A/S

26/06/2024

4:33:00 PM

1,794.0000

91

XCSE

Genmab A/S

26/06/2024

4:33:01 PM

1,794.0000

68

XCSE

Genmab A/S

26/06/2024

4:33:01 PM

1,794.0000

63

XCSE

Genmab A/S

26/06/2024

4:33:01 PM

1,794.0000

131

XCSE

Genmab A/S

26/06/2024

4:33:10 PM

1,793.5000

35

CEUX

Genmab A/S

26/06/2024

4:35:01 PM

1,795.0000

5

XCSE

Genmab A/S

26/06/2024

4:35:01 PM

1,795.0000

22

XCSE

Genmab A/S

26/06/2024

4:35:01 PM

1,795.0000

27

XCSE

Genmab A/S

26/06/2024

4:35:01 PM

1,795.0000

23

XCSE

Genmab A/S

26/06/2024

4:35:01 PM

1,795.0000

27

XCSE

Genmab A/S

26/06/2024

4:35:01 PM

1,795.0000

27

XCSE

Genmab A/S

26/06/2024

4:35:01 PM

1,795.0000

8

XCSE

Genmab A/S

26/06/2024

4:35:01 PM

1,795.0000

27

XCSE

Genmab A/S

26/06/2024

4:35:01 PM

1,795.0000

27

XCSE

Genmab A/S

26/06/2024

4:35:02 PM

1,795.0000

15

XCSE

Genmab A/S

26/06/2024

4:35:02 PM

1,795.0000

12

XCSE

Genmab A/S

26/06/2024

4:35:24 PM

1,795.0000

40

XCSE

Genmab A/S

26/06/2024

4:35:24 PM

1,795.0000

50

XCSE

Genmab A/S

26/06/2024

4:35:24 PM

1,795.0000

8

XCSE

Genmab A/S

26/06/2024

4:35:24 PM

1,795.0000

40

XCSE

Genmab A/S

26/06/2024

4:35:24 PM

1,795.0000

177

XCSE

Genmab A/S

26/06/2024

4:35:24 PM

1,795.0000

14

XCSE

Genmab A/S

26/06/2024

4:35:24 PM

1,795.0000

42

XCSE

Genmab A/S

26/06/2024

4:35:25 PM

1,795.0000

42

XCSE

Genmab A/S

26/06/2024

4:35:25 PM

1,795.0000

7

XCSE

Genmab A/S

26/06/2024

4:35:35 PM

1,795.0000

5

XCSE

Genmab A/S

26/06/2024

4:35:44 PM

1,795.0000

86

XCSE

Genmab A/S

26/06/2024

4:35:44 PM

1,795.0000

14

XCSE

Genmab A/S

26/06/2024

4:35:44 PM

1,795.0000

88

XCSE

Genmab A/S

26/06/2024

4:35:44 PM

1,795.0000

10

XCSE

Genmab A/S

26/06/2024

4:35:44 PM

1,795.0000

30

XCSE

185

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

4:35:44 PM

1,795.0000

10

XCSE

Genmab A/S

26/06/2024

4:35:44 PM

1,795.0000

78

XCSE

Genmab A/S

26/06/2024

4:35:44 PM

1,794.5000

10

CEUX

Genmab A/S

26/06/2024

4:35:44 PM

1,794.5000

36

CEUX

Genmab A/S

26/06/2024

4:35:44 PM

1,794.5000

23

CEUX

Genmab A/S

26/06/2024

4:35:44 PM

1,794.5000

15

AQEU

Genmab A/S

26/06/2024

4:35:44 PM

1,795.0000

10

XCSE

Genmab A/S

26/06/2024

4:35:44 PM

1,795.0000

32

XCSE

Genmab A/S

26/06/2024

4:35:44 PM

1,795.0000

66

XCSE

Genmab A/S

26/06/2024

4:35:44 PM

1,795.0000

30

XCSE

Genmab A/S

26/06/2024

4:35:44 PM

1,795.0000

4

XCSE

Genmab A/S

26/06/2024

4:35:44 PM

1,795.0000

47

XCSE

Genmab A/S

26/06/2024

4:35:44 PM

1,795.0000

17

XCSE

Genmab A/S

26/06/2024

4:35:44 PM

1,795.0000

7

XCSE

Genmab A/S

26/06/2024

4:35:44 PM

1,795.0000

21

XCSE

Genmab A/S

26/06/2024

4:35:44 PM

1,795.0000

2

XCSE

Genmab A/S

26/06/2024

4:35:44 PM

1,795.0000

41

XCSE

Genmab A/S

26/06/2024

4:35:44 PM

1,795.0000

57

XCSE

Genmab A/S

26/06/2024

4:35:44 PM

1,795.0000

20

XCSE

Genmab A/S

26/06/2024

4:35:44 PM

1,795.0000

30

XCSE

Genmab A/S

26/06/2024

4:35:44 PM

1,795.0000

2

XCSE

Genmab A/S

26/06/2024

4:35:44 PM

1,795.0000

9

XCSE

Genmab A/S

26/06/2024

4:35:44 PM

1,795.0000

22

XCSE

Genmab A/S

26/06/2024

4:35:44 PM

1,795.0000

2

XCSE

Genmab A/S

26/06/2024

4:35:45 PM

1,795.0000

40

XCSE

Genmab A/S

26/06/2024

4:35:45 PM

1,795.0000

23

XCSE

Genmab A/S

26/06/2024

4:35:46 PM

1,795.0000

84

XCSE

Genmab A/S

26/06/2024

4:35:46 PM

1,795.0000

14

XCSE

Genmab A/S

26/06/2024

4:35:46 PM

1,795.0000

56

XCSE

Genmab A/S

26/06/2024

4:35:46 PM

1,795.0000

42

XCSE

Genmab A/S

26/06/2024

4:35:46 PM

1,795.0000

11

XCSE

Genmab A/S

26/06/2024

4:35:46 PM

1,794.5000

23

CEUX

Genmab A/S

26/06/2024

4:35:46 PM

1,794.5000

17

CEUX

Genmab A/S

26/06/2024

4:35:46 PM

1,794.5000

6

CEUX

Genmab A/S

26/06/2024

4:35:46 PM

1,794.5000

17

CEUX

Genmab A/S

26/06/2024

4:35:46 PM

1,794.5000

6

AQEU

Genmab A/S

26/06/2024

4:35:46 PM

1,794.5000

24

XCSE

Genmab A/S

26/06/2024

4:35:46 PM

1,794.5000

43

XCSE

Genmab A/S

26/06/2024

4:35:46 PM

1,794.5000

21

CEUX

Genmab A/S

26/06/2024

4:35:46 PM

1,794.5000

6

AQEU

Genmab A/S

26/06/2024

4:35:46 PM

1,794.5000

24

XCSE

Genmab A/S

26/06/2024

4:35:46 PM

1,794.5000

11

XCSE

Genmab A/S

26/06/2024

4:35:46 PM

1,794.5000

6

AQEU

Genmab A/S

26/06/2024

4:35:47 PM

1,794.5000

29

XCSE

Genmab A/S

26/06/2024

4:35:47 PM

1,794.5000

8

XCSE

Genmab A/S

26/06/2024

4:35:47 PM

1,794.5000

16

XCSE

Genmab A/S

26/06/2024

4:35:47 PM

1,794.5000

2

CEUX

Genmab A/S

26/06/2024

4:36:16 PM

1,792.5000

7

CEUX

186

​

​

Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 24 – June 26, 2024

Graphic

​

​

Genmab A/S

26/06/2024

4:36:16 PM

1,792.5000

35

XCSE

Genmab A/S

26/06/2024

4:36:16 PM

1,792.5000

11

XCSE

Genmab A/S

26/06/2024

4:36:16 PM

1,792.5000

26

XCSE

Genmab A/S

26/06/2024

4:36:16 PM

1,792.5000

6

CEUX

Genmab A/S

26/06/2024

4:36:16 PM

1,792.5000

10

CEUX

Genmab A/S

26/06/2024

4:36:16 PM

1,792.5000

4

AQEU

Genmab A/S

26/06/2024

4:36:17 PM

1,792.5000

23

CEUX

Genmab A/S

26/06/2024

4:36:17 PM

1,792.5000

46

XCSE

Genmab A/S

26/06/2024

4:36:17 PM

1,792.5000

26

XCSE

Genmab A/S

26/06/2024

4:36:17 PM

1,792.5000

23

CEUX

Genmab A/S

26/06/2024

4:36:17 PM

1,792.5000

4

AQEU

Genmab A/S

26/06/2024

4:36:18 PM

1,792.5000

18

XCSE

Genmab A/S

26/06/2024

4:36:18 PM

1,792.5000

15

XCSE

Genmab A/S

26/06/2024

4:36:18 PM

1,792.5000

8

CEUX

Genmab A/S

26/06/2024

4:36:18 PM

1,792.5000

9

CEUX

Genmab A/S

26/06/2024

4:36:18 PM

1,792.5000

4

AQEU

Genmab A/S

26/06/2024

4:36:18 PM

1,792.5000

4

AQEU

Genmab A/S

26/06/2024

4:36:18 PM

1,792.5000

4

AQEU

Genmab A/S

26/06/2024

4:36:18 PM

1,792.5000

2

AQEU

Genmab A/S

26/06/2024

4:36:18 PM

1,792.5000

2

AQEU

Genmab A/S

26/06/2024

4:36:18 PM

1,792.5000

11

XCSE

Genmab A/S

26/06/2024

4:36:18 PM

1,792.5000

10

XCSE

Genmab A/S

26/06/2024

4:36:18 PM

1,792.5000

15

AQEU

Genmab A/S

26/06/2024

4:37:18 PM

1,792.0000

40

XCSE

Genmab A/S

26/06/2024

4:37:18 PM

1,792.0000

47

XCSE

Genmab A/S

26/06/2024

4:37:18 PM

1,792.0000

37

XCSE

Genmab A/S

26/06/2024

4:37:18 PM

1,792.0000

41

XCSE

Genmab A/S

26/06/2024

4:37:18 PM

1,792.0000

53

CEUX

Genmab A/S

26/06/2024

4:37:18 PM

1,792.0000

32

XCSE

Genmab A/S

26/06/2024

4:37:23 PM

1,791.5000

17

CEUX

Genmab A/S

26/06/2024

4:43:44 PM

1,787.5000

16

CEUX

Genmab A/S

26/06/2024

4:43:45 PM

1,787.5000

15

CEUX

Genmab A/S

26/06/2024

4:43:46 PM

1,787.5000

8

CEUX

Genmab A/S

26/06/2024

4:43:46 PM

1,787.5000

22

CEUX

Genmab A/S

26/06/2024

4:43:47 PM

1,787.5000

3

CEUX

Genmab A/S

26/06/2024

4:43:48 PM

1,787.5000

7

CEUX

Genmab A/S

26/06/2024

4:45:16 PM

1,789.5000

1

CEUX

Genmab A/S

26/06/2024

4:46:14 PM

1,790.0000

2

AQEU

Genmab A/S

26/06/2024

4:46:14 PM

1,790.0000

18

AQEU

Genmab A/S

26/06/2024

4:46:50 PM

1,792.0000

12

CEUX

Genmab A/S

26/06/2024

4:46:56 PM

1,792.0000

52

XCSE

​

187

​

​