Report Pursuant to Section 28a of the Danish Securities Trading Act


Copenhagen, Denmark; October 8, 2008 - Pursuant to Section 28a of the Danish    
Securities Trading Act, Genmab A/S (OMX: GEN) shall make public information on  
transactions by managerial employees and their related parties involving Genmab 
shares and related instruments, as follows:                                     

Name:	Michael B. Widmer                                                         
Reason: Chairman of the Board of Directors                                      
Issuer: Genmab A/S                                                              
ID code/ ISIN: DK0010272202                                                     
Description: Warrants                                                           
Transaction: Grant                                                              
Trading date: October 8, 2008                                                   
Market: OMX Nordic Exchange Copenhagen A/S                                      
Number: 24,000                                                                  
Value: DKK 2,635,440                                                            

Name:	Anders Gersel Pedersen                                                    
Reason: Member of the Board of Directors                                        
Issuer: Genmab A/S                                                              
ID code/ ISIN: DK0010272202                                                     
Description: Warrants                                                           
Transaction: Grant                                                              
Trading date: October 8, 2008                                                   
Market: OMX Nordic Exchange Copenhagen A/S                                      
Number: 12,000                                                                  
Value: DKK 1,317,720                                                            

Name:	Karsten Havkrog Pedersen                                                  
Reason: Member of the Board of Directors                                        
Issuer: Genmab A/S                                                              
ID code/ ISIN: DK0010272202                                                     
Description: Warrants                                                           
Transaction: Grant                                                              
Trading date: October 8, 2008                                                   
Market: OMX Nordic Exchange Copenhagen A/S                                      
Number: 12,000                                                                  
Value: DKK 1,317,720                                                            

Name:	Ernst H. Schweizer                                                        
Reason: Member of the Board of Directors                                        
Issuer: Genmab A/S                                                              
ID code/ ISIN: DK0010272202                                                     
Description: Warrants                                                           
Transaction: Grant                                                              
Trading date: October 8, 2008                                                   
Market: OMX Nordic Exchange Copenhagen A/S                                      
Number: 12,000                                                                  
Value: DKK 1,317,720                                                            

Name:	Burton G. Malkiel                                                         
Reason: Member of the Board of Directors                                        
Issuer: Genmab A/S                                                              
ID code/ ISIN: DK0010272202                                                     
Description: Warrants                                                           
Transaction: Grant                                                              
Trading date: October 8, 2008                                                   
Market: OMX Nordic Exchange Copenhagen A/S                                      
Number: 12,000                                                                  
Value: DKK 1,317,720                                                            

Name:	Hans Henrik Munch-Jensen                                                  
Reason: Member of the Board of Directors                                        
Issuer: Genmab A/S                                                              
ID code/ ISIN: DK0010272202                                                     
Description: Warrants                                                           
Transaction: Grant                                                              
Trading date: October 8, 2008                                                   
Market: OMX Nordic Exchange Copenhagen A/S                                      
Number: 12,000                                                                  
Value: DKK 1,317,720                                                            

Name:	Lisa N. Drakeman                                                          
Reason: President, Chief Executive Officer & Member of the Board of Directors   
Issuer: Genmab A/S                                                              
ID code/ ISIN: DK0010272202                                                     
Description: Warrants                                                           
Transaction: Grant                                                              
Trading date: October 8, 2008                                                   
Market: OMX Nordic Exchange Copenhagen A/S                                      
Number: 160,000                                                                 
Value: DKK 17,569,600                                                           

Name:	Jan G. J. van de Winkel                                                   
Reason: President, Research & Development & Chief Scientific Officer            
Issuer: Genmab A/S                                                              
ID code/ ISIN: DK0010272202                                                     
Description: Warrants                                                           
Transaction: Grant                                                              
Trading date: October 8, 2008                                                   
Market: OMX Nordic Exchange Copenhagen A/S                                      
Number: 80,000                                                                  
Value: DKK 8,784,800                                                            

The exercise price for each warrant is DKK 272.00. Each warrant entitles the    
owner to subscribe one share of nominally DKK 1. On the basis of an exercise    
price of DKK 272.00 and by application of the Black-Scholes formula, the average
value of each warrant can be calculated as DKK 109.81 based on an interest rate 
of 4.21% and the historical volatility of Genmab A/S shares calculated at       
36.84%.                                                                         


About Genmab A/S                                                                
Genmab is a leading international biotechnology company focused on developing   
fully human antibody therapeutics for unmet medical needs.  Using cutting-edge  
antibody technology, Genmab's world class discovery, development and            
manufacturing teams have created and developed an extensive pipeline of products
for potential treatment of a variety of diseases including cancer and autoimmune
disorders.  As Genmab advances towards a commercial future, we remain committed 
to our primary goal of improving the lives of patients who are in urgent need of
new treatment options.  For more information on Genmab's products and           
technology, visit www.genmab.com.                                               

This press release contains forward looking statements. The words “believe”,    
“expect”, “anticipate”, “intend” and “plan” and similar expressions identify    
forward looking statements. Actual results or performance may differ materially 
from any future results or performance expressed or implied by such statements. 
The important factors that could cause our actual results or performance to     
differ materially include, among others, risks associated with product discovery
and development, uncertainties related to the outcome and conduct of clinical   
trials including unforeseen safety issues, uncertainties related to product     
manufacturing, the lack of market acceptance of our products, our inability to  
manage growth, the competitive environment in relation to our business area and 
markets, our inability to attract and retain suitably qualified personnel, the  
unenforceability or lack of protection of our patents and proprietary rights,   
our relationships with affiliated entities, changes and developments in         
technology which may render our products obsolete, and other factors. For a     
further discussion of these risks, please refer to the section “Risk Management”
in Genmab's Annual Report, which is available on www.genmab.com.  Genmab does   
not undertake any obligation to update or revise forward looking statements in  
this press release nor to confirm such statements in relation to actual results,
unless required by law.                                                         

Genmab(R); the Y-shaped Genmab logo(R); HuMax(R); HuMax-CD4(R); HuMax-CD20(R);  
HuMax-EGFr(TM); HuMax-IL8(TM); HuMax-TAC(TM); HuMax-HepC(TM); HuMax-CD38(TM);   
HuMax-CD32b(TM) and UniBody(R) are all trademarks of Genmab A/S.                

Contact: Helle Husted, Sr. Director, Investor Relations, T: +45 33 44 77 30, M: 
+45 25 27 47 13, E: hth@genmab.com                                              
                                                                                
Stock Exchange Release no. 48/2008                                              

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Attachments

48_sr_mgmt_warrant_grant_081008_uk.pdf