| Exhibit | Description of Exhibit | ||||
| 99.1 | |||||
| GENMAB A/S | ||||||||
| BY: | /s/ Anthony Pagano | |||||||
| Name: Anthony Pagano | ||||||||
| Title: Executive Vice President & Chief Financial Officer | ||||||||

| 1. | Details of the person discharging managerial responsibilities / person closely associated | ||||||||||
| a) | Name | Deirdre P. Connelly | |||||||||
| 2. | Reason for the notification | ||||||||||
| a) | Position/status | Chair of the Board of Directors | |||||||||
| b) | Initial notification/Amendment | Initial notification | |||||||||
| 3. | Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor | ||||||||||
| a) | Name | Genmab A/S | |||||||||
| b) | LEI-code | 529900MTJPDPE4MHJ122 | |||||||||
| 4. | Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted | ||||||||||
| a) |
Description of the financial instrument, type of instrument
Identification code
|
Share
DK0010272202
|
|||||||||
| b) | Nature of the transaction | Acquisition due to vesting of restricted stock units | |||||||||
| c) | Price(s) and volume(s) | Price(s) | Volume(s) | ||||||||
| DKK2,043 | 378 | ||||||||||
| d) |
Aggregated information
- Aggregated volume
- Price
|
DKK2,043 | 378 | ||||||||
| e) | Date of the transaction | 2025-12-01 | |||||||||
| f) | Place of the transaction | Outside a market place | |||||||||
| Genmab A/S Carl Jacobsens Vej 30 2500 Valby, Denmark |
Tel: +45 7020 2728 www.genmab.com |
Company Announcement no. 53
Page 1/9
CVR no. 2102 3884
LEI Code 529900MTJPDPE4MHJ122
|
||||||

| 1. | Details of the person discharging managerial responsibilities / person closely associated | ||||||||||
| a) | Name | Pernille Erenbjerg | |||||||||
| 2. | Reason for the notification | ||||||||||
| a) | Position/status | Member of the Board of Directors | |||||||||
| b) | Initial notification/Amendment | Initial notification | |||||||||
| 3. | Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor | ||||||||||
| a) | Name | Genmab A/S | |||||||||
| b) | LEI-code | 529900MTJPDPE4MHJ122 | |||||||||
| 4. | Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted | ||||||||||
| a) |
Description of the financial instrument, type of instrument
Identification code
|
Share
DK0010272202
|
|||||||||
| b) | Nature of the transaction | Acquisition due to vesting of restricted stock units | |||||||||
| c) | Price(s) and volume(s) | Price(s) | Volume(s) | ||||||||
| DKK2,043 | 283 | ||||||||||
| d) |
Aggregated information
- Aggregated volume
- Price
|
DKK2,043 | 283 | ||||||||
| e) | Date of the transaction | 2025-12-01 | |||||||||
| f) | Place of the transaction | Outside a market place | |||||||||
| Genmab A/S Carl Jacobsens Vej 30 2500 Valby, Denmark |
Tel: +45 7020 2728 www.genmab.com |
Company Announcement no. 53
Page 2/9
CVR no. 2102 3884
LEI Code 529900MTJPDPE4MHJ122
|
||||||

| 1. | Details of the person discharging managerial responsibilities / person closely associated | ||||||||||
| a) | Name | Anders Gersel Pedersen | |||||||||
| 2. | Reason for the notification | ||||||||||
| a) | Position/status | Member of the Board of Directors | |||||||||
| b) | Initial notification/Amendment | Initial notification | |||||||||
| 3. | Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor | ||||||||||
| a) | Name | Genmab A/S | |||||||||
| b) | LEI-code | 529900MTJPDPE4MHJ122 | |||||||||
| 4. | Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted | ||||||||||
| a) |
Description of the financial instrument, type of instrument
Identification code
|
Share
DK0010272202
|
|||||||||
| b) | Nature of the transaction | Acquisition due to vesting of restricted stock units | |||||||||
| c) | Price(s) and volume(s) | Price(s) | Volume(s) | ||||||||
| DKK2,043 | 189 | ||||||||||
| d) |
Aggregated information
- Aggregated volume
- Price
|
DKK2,043 | 189 | ||||||||
| e) | Date of the transaction | 2025-12-01 | |||||||||
| f) | Place of the transaction | Outside a market place | |||||||||
| Genmab A/S Carl Jacobsens Vej 30 2500 Valby, Denmark |
Tel: +45 7020 2728 www.genmab.com |
Company Announcement no. 53
Page 3/9
CVR no. 2102 3884
LEI Code 529900MTJPDPE4MHJ122
|
||||||

| 1. | Details of the person discharging managerial responsibilities / person closely associated | ||||||||||
| a) | Name | Mijke Zachariasse | |||||||||
| 2. | Reason for the notification | ||||||||||
| a) | Position/status | Member of the Board of Directors | |||||||||
| b) | Initial notification/Amendment | Initial notification | |||||||||
| 3. | Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor | ||||||||||
| a) | Name | Genmab A/S | |||||||||
| b) | LEI-code | 529900MTJPDPE4MHJ122 | |||||||||
| 4. | Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted | ||||||||||
| a) |
Description of the financial instrument, type of instrument
Identification code
|
Share
DK0010272202
|
|||||||||
| b) | Nature of the transaction | Acquisition due to vesting of restricted stock units | |||||||||
| c) | Price(s) and volume(s) | Price(s) | Volume(s) | ||||||||
| DKK2,043 | 189 | ||||||||||
| d) |
Aggregated information
- Aggregated volume
- Price
|
DKK2,043 | 189 | ||||||||
| e) | Date of the transaction | 2025-12-01 | |||||||||
| f) | Place of the transaction | Outside a market place | |||||||||
| Genmab A/S Carl Jacobsens Vej 30 2500 Valby, Denmark |
Tel: +45 7020 2728 www.genmab.com |
Company Announcement no. 53
Page 4/9
CVR no. 2102 3884
LEI Code 529900MTJPDPE4MHJ122
|
||||||

| 1. | Details of the person discharging managerial responsibilities / person closely associated | ||||||||||
| a) | Name | Martin Schultz | |||||||||
| 2. | Reason for the notification | ||||||||||
| a) | Position/status | Member of the Board of Directors | |||||||||
| b) | Initial notification/Amendment | Initial notification | |||||||||
| 3. | Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor | ||||||||||
| a) | Name | Genmab A/S | |||||||||
| b) | LEI-code | 529900MTJPDPE4MHJ122 | |||||||||
| 4. | Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted | ||||||||||
| a) |
Description of the financial instrument, type of instrument
Identification code
|
Share
DK0010272202
|
|||||||||
| b) | Nature of the transaction | Acquisition due to vesting of restricted stock units | |||||||||
| c) | Price(s) and volume(s) | Price(s) | Volume(s) | ||||||||
| DKK2,043 | 189 | ||||||||||
| d) |
Aggregated information
- Aggregated volume
- Price
|
DKK2,043 | 189 | ||||||||
| e) | Date of the transaction | 2025-12-01 | |||||||||
| f) | Place of the transaction | Outside a market place | |||||||||
| Genmab A/S Carl Jacobsens Vej 30 2500 Valby, Denmark |
Tel: +45 7020 2728 www.genmab.com |
Company Announcement no. 53
Page 5/9
CVR no. 2102 3884
LEI Code 529900MTJPDPE4MHJ122
|
||||||

| 1. | Details of the person discharging managerial responsibilities / person closely associated | ||||||||||
| a) | Name | Paolo Paoletti | |||||||||
| 2. | Reason for the notification | ||||||||||
| a) | Position/status | Member of the Board of Directors | |||||||||
| b) | Initial notification/Amendment | Initial notification | |||||||||
| 3. | Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor | ||||||||||
| a) | Name | Genmab A/S | |||||||||
| b) | LEI-code | 529900MTJPDPE4MHJ122 | |||||||||
| 4. | Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted | ||||||||||
| a) |
Description of the financial instrument, type of instrument
Identification code
|
Share
DK0010272202
|
|||||||||
| b) | Nature of the transaction | Acquisition due to vesting of restricted stock units | |||||||||
| c) | Price(s) and volume(s) | Price(s) | Volume(s) | ||||||||
| DKK2,043 | 189 | ||||||||||
| d) |
Aggregated information
- Aggregated volume
- Price
|
DKK2,043 | 189 | ||||||||
| e) | Date of the transaction | 2025-12-01 | |||||||||
| f) | Place of the transaction | Outside a market place | |||||||||
| Genmab A/S Carl Jacobsens Vej 30 2500 Valby, Denmark |
Tel: +45 7020 2728 www.genmab.com |
Company Announcement no. 53
Page 6/9
CVR no. 2102 3884
LEI Code 529900MTJPDPE4MHJ122
|
||||||

| 1. | Details of the person discharging managerial responsibilities / person closely associated | ||||||||||
| a) | Name | Elizabeth O’Farrell | |||||||||
| 2. | Reason for the notification | ||||||||||
| a) | Position/status | Member of the Board of Directors | |||||||||
| b) | Initial notification/Amendment | Initial notification | |||||||||
| 3. | Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor | ||||||||||
| a) | Name | Genmab A/S | |||||||||
| b) | LEI-code | 529900MTJPDPE4MHJ122 | |||||||||
| 4. | Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted | ||||||||||
| a) |
Description of the financial instrument, type of instrument
Identification code
|
Share
DK0010272202
|
|||||||||
| b) | Nature of the transaction | Acquisition due to vesting of restricted stock units | |||||||||
| c) | Price(s) and volume(s) | Price(s) | Volume(s) | ||||||||
| DKK2,043 | 189 | ||||||||||
| d) |
Aggregated information
- Aggregated volume
- Price
|
DKK2,043 | 189 | ||||||||
| e) | Date of the transaction | 2025-12-01 | |||||||||
| f) | Place of the transaction | Outside a market place | |||||||||
| Genmab A/S Carl Jacobsens Vej 30 2500 Valby, Denmark |
Tel: +45 7020 2728 www.genmab.com |
Company Announcement no. 53
Page 7/9
CVR no. 2102 3884
LEI Code 529900MTJPDPE4MHJ122
|
||||||

| 1. | Details of the person discharging managerial responsibilities / person closely associated | ||||||||||
| a) | Name | Rolf Hoffmann | |||||||||
| 2. | Reason for the notification | ||||||||||
| a) | Position/status | Member of the Board of Directors | |||||||||
| b) | Initial notification/Amendment | Initial notification | |||||||||
| 3. | Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor | ||||||||||
| a) | Name | Genmab A/S | |||||||||
| b) | LEI-code | 529900MTJPDPE4MHJ122 | |||||||||
| 4. | Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted | ||||||||||
| a) |
Description of the financial instrument, type of instrument
Identification code
|
Share
DK0010272202
|
|||||||||
| b) | Nature of the transaction | Acquisition due to vesting of restricted stock units | |||||||||
| c) | Price(s) and volume(s) | Price(s) | Volume(s) | ||||||||
| DKK2,043 | 189 | ||||||||||
| d) |
Aggregated information
- Aggregated volume
- Price
|
DKK2,043 | 189 | ||||||||
| e) | Date of the transaction | 2025-12-01 | |||||||||
| f) | Place of the transaction | Outside a market place | |||||||||
| Genmab A/S Carl Jacobsens Vej 30 2500 Valby, Denmark |
Tel: +45 7020 2728 www.genmab.com |
Company Announcement no. 53
Page 8/9
CVR no. 2102 3884
LEI Code 529900MTJPDPE4MHJ122
|
||||||

| Genmab A/S Carl Jacobsens Vej 30 2500 Valby, Denmark |
Tel: +45 7020 2728 www.genmab.com |
Company Announcement no. 53
Page 9/9
CVR no. 2102 3884
LEI Code 529900MTJPDPE4MHJ122
|
||||||