QuickLinks
 -- Click here to rapidly navigate through this document

 
 

Exhibit 4.1    
    


        VOID VOID VOID 



	NUMBER	 	  SHARES
	
GS98	
 	
*1*********

**1********

***1*******

****1******




AKELA PHARMA INC.  


INCORPORATED UNDER THE CANADA BUSINESS CORPORATIONS ACT 


THIS CERTIFIES THAT


** SPECIMEN **


**SPECIMEN**1
Common Shares**CUSIP 00972X200**Certificate GS98**SPECIMEN**1 Common Shares**CUSIP 00972X200**Certificate GS98 **SPECIMEN**1 Common Shares**CUSIP 00972X200**Certificate GS98**SPECIMEN**1
Common Shares**CUSIP 00972X200**Certificate GS98**SPECIMEN**1 Common Shares**CUSIP 00972X200**Certificate GS98 **SPECIMEN**1 Common Shares**CUSIP 00972X200**Certificate GS98**SPECIMEN**1 Common
Shares**CUSIP 00972X200**Certificate GS98**SPECIMEN**1 Common Shares**CUSIP 00972X200**Certificate GS98 **SPECIMEN**1 Common Shares**CUSIP 00972X200**Certificate GS98**SPECIMEN**1 Common Shares**CUSIP
00972X200**Certificate GS98**SPECIMEN**1 Common Shares**CUSIP 00972X200**Certificate GS98**SPECIMEN**1 Common Shares**CUSIP 00972X200**Certificate GS98**SPECIMEN**1 Common Shares**CUSIP 



	is the registered owner of	 	CUSIP: 00972X 20 0

ISIN: CA00972X2005





** ONE **


**SPECIMEN**1
Common Shares**CUSIP 00972X200**Certificate GS98**SPECIMEN**1 Common Shares**CUSIP 00972X200**Certificate GS98 **SPECIMEN**1 Common Shares**CUSIP 00972X200**Certificate GS98**SPECIMEN**1
Common Shares**CUSIP 00972X200**Certificate GS98**SPECIMEN**1 Common Shares**CUSIP 00972X200**Certificate GS98 **SPECIMEN**1 Common Shares**CUSIP 00972X200**Certificate GS98**SPECIMEN**1 Common
Shares**CUSIP 00972X200**Certificate GS98**SPECIMEN**1 Common Shares**CUSIP 00972X200**Certificate GS98 **SPECIMEN**1 Common Shares**CUSIP 00972X200**Certificate GS98**SPECIMEN**1 Common 


FULLY PAID AND NON-ASSESSABLE COMMON SHARES IN THE CAPITAL OF  


AKELA PHARMA INC.  


transferable only on the books of the Corporation by the registered holder in person or by duly authorized Attorney on surrender of this Certificate properly
endorsed. 


This
Certificate is not valid until countersigned and registered by the Transfer Agent and Registrar of the Corporation. 


IN
WITNESS WHEREOF the Corporation has caused this Certificate to be signed by its duly authorized officers. 



	DATED: March 24, 2007	 	 	 	COUNTERSIGNED AND REGISTERED by

Equity Transfer & Trust Company, Toronto, Ontario, Canada as

Main Transfer Agent and Registrar

and

Registrar and Transfer Company, Cranford, NJ, USA as

Co-Transfer Agent
	
/s/ Halvor Jaeger

Halvor Jaeger

Chief Executive Officer	
 	

/s/ Andrew Reiter

Andrew Reiter

Chief Financial Officer	
 	

 





	

 	
 	

By:	

 AUTHORIZED OFFICER




The
Shares represented by this Certificate are transferable at the offices of Equity Transfer & Trust Company, Toronto, Ontario, Canada, and at the offices of Registrar and Transfer Company, Cranford,
NJ, USA. 


SECURITY INSTRUCTIONS ON REVERSE    VOIR LES INSTRUCTIONS DE SÉCURITÉ AU VERSO  


3090794 








FOR VALUE RECEIVED,
                                         
   hereby sell, assign and transfer unto
 


PLEASE INSERT SOCIAL INSURANCE NUMBER OF TRANSFEREE 


    /            /                        -
                        /            /     
                   -                       
 /            /
 





(PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS OF ASSIGNEE) 



	

	

	
 	

Shares
	of the Capital Stock represented by the within Certificate, and do hereby irrevocably constitute and appoint
	 	 	 
	
	 	Attorney
	to transfer the said Stock on the Books of the within named Corporation, with full power of substitution in the premises.





Dated
                                         
          


Signature:
                                         
          


NOTICE: THE SIGNATURE TO THIS ASSIGNMENT MUST CORRESPOND WITH THE NAME AS WRITTEN UPON THE FACE OF THE CERTIFICATE, IN EVERY PARTICULAR, WITHOUT ALTERATION OR ENLARGEMENT, OR ANY CHANGE
WHATSOEVER, AND MUST BE GUARANTEED BY A SCHEDULE 1 CANADIAN CHARTERED BANK OR AN ELIGIBLE GUARANTOR INSTITUTION WITH MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM. 


Guaranteed by:
                                         
          


The class of shares represented by this certificate has rights, privileges, restrictions or conditions attached thereto and the Corporation will furnish a
shareholder, on demand and without charge, with a full copy of the text of (i) rights, privileges, restrictions and conditions attached to each class authorized to be issued and to each series
insofar as the same have been fixed by the directors, and (ii) the authority of the directors to fix the rights, privileges, restrictions and conditions of subsequent
series.











QuickLinks



Exhibit 4.1