Exhibit 4.1


 




	
  

  	
  DATED: NUMBER
  SHARES COUNTERSIGNED: BROADRIDGE CORPORATE ISSUER SOLUTIONS, INC. 1717 ARCH
  ST., STE. 1300, PHILADELPHIA, PA 19103 TRANSFER AGENT BY: AUTHORIZED
  SIGNATURE SPECIMEN SPECIMEN COMMON STOCK transferable on the books of the
  Corporation in person or by attorney upon surrender of this certificate duly
  endorsed or assigned. This certificate and the shares represented hereby are
  subject to the laws of the State of Delaware, and to the Certificate of
  Incorporation and Bylaws of the Corporation, as now or hereafter amended.
  This certificate is not valid until countersigned by the Transfer Agent.
  WITNESS the facsimile seal of the Corporation and the facsimile signatures of
  its duly authorized officers. INCORPORATED UNDER THE LAWS OF THE STATE OF
  DELAWARE THIS CERTIFIES THAT: IS THE OWNER OF SEE REVERSE FOR CERTAIN
  DEFINITIONS CUSIP 03209R 10 3 AMPHASTAR PHARMACEUTICALS, INC. A FULLY PAID
  AND NON-ASSESSABLE SHARES OF COMMON STOCK OF $.0001 PAR VALUE EACH OF
  AMPHASTAR PHARMACEUTICALS, INC. CORPORATE SECRETARY PRESIDENT SPECIMEN 

  






 


 








 

The following abbreviations, when used in the inscription on the face of this certificate, shall be construed as though they were written out in full according to applicable laws or regulations:

 

	
TEN COM - as tenants in common
    	
UNIF GIFT MIN ACT-....................   Custodian....................    
    
	
TEN ENT - as tenants by the entireties
    	
                                    (Cust)
    	
               (Minor)
    
	
JT TEN - as joint tenants with right of
    	
                                     under   Uniform Gifts to Minors
    
	
survivorship and   not as tenants
    	
 
    	
 
    
	
in common
    	
 
    	
Act...................
    
	
 
    	
 
    	
       (State)
    


 

 

Additional abbreviations may also be used though not in the above list.

 

 

For Value Received,                        hereby sell, assign and transfer unto

 

	
PLEASE INSERT SOCIAL SECURITY OR   OTHER
   IDENTIFYING NUMBER OF ASSIGNEE
    	
 
    
	
 
    	
 
    
	
 
    	
 
    


 

	
 
    


 

(PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE)

 

	
 
    


 

	
 
    


 

	
 
    	
 Shares
    


 

of the 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
    	
 
    	
 
    


 

	
 
    	
 
    
	
 
    	
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.
    


 

 

	
Signature(s) Guaranteed
    	
 
    
	
 
    	
 
    
	
By
    	
 
    	
 
    
	
The Signature(s) must be   guaranteed by an eligible guarantor institution (Banks, Stockbrokers, Savings   and Loan Associations and Credit Unions with membership in an approved   Signature Guarantee Medallion Program), pursuant to SEC Rule 17Ad-15.
    	
 
    
			


 

 

 

 

 

 

 

 

 

 

 

THE CORPORATION WILL FURNISH TO ANY STOCKHOLDER, UPON REQUEST AND WITHOUT CHARGE, A FULL STATEMENT OF THE DESIGNATIONS, RELATIVE RIGHTS, PREFERENCES AND LIMITATIONS OF THE SHARES OF EACH CLASS AND SERIES AUTHORIZED TO BE ISSUED, SO FAR AS THE SAME HAVE BEEN DETERMINED, AND OF THE AUTHORITY, IF ANY, OF THE BOARD TO DIVIDE THE SHARES INTO CLASSES OR SERIES AND TO DETERMINE AND CHANGE THE RELATIVE RIGHTS, PREFERENCES AND LIMITATIONS OF ANY CLASS OR SERIES. SUCH REQUEST MAY BE MADE TO THE SECRETARY OF THE CORPORATION OR TO THE TRANSFER AGENT NAMED ON THIS CERTIFICATE.

 

	
 
    	
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