Exhibit 4.3


 




	
  

  	
  WORLD HEART
  CORPORATION INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE WHC THIS
  CERTIFIES that is the owner of COMMON STOCK PAR VALUE $.001 CUSIP 980905 40 0
  FULLY PAID AND NONASSESSABLE SHARES OF COMMON STOCK, PAR VALUE $.001 PER SHARE
  OF (the “Corporation”), a Delaware corporation. The shares represented by
  this certificate are transferable only on the stock transfer books of the
  Corporation by the holder of record hereof, or by his duly authorized
  attorney or legal representative, upon the surrender of this certificate
  properly endorsed. This certificate is not valid until countersigned and
  registered by the Corporation's transfer agent and registrar. This security
  is not a deposit or account and is not federal insured or guaranteed. IN
  WITNESS WHEREOF, the Corporation has caused this certificate to be executed
  by the facsimile signatures of its duly authorized officers and has caused a
  facsimile of its corporate seal to be hereunto affixed. Dated WORLD HEART
  CORPORATION WORLD HEART CORPORATION 2010 DELAWARE INCORPORATED SHARE(S) CHIEF
  FINANCIAL OFFICER AND TREASURER PRESIDENT AND CHIEF EXECUTIVE OFFICER
  COUNTERSIGNED AND REGISTERED: MELLON INVESTOR SERVICES LLC TRANSFER AGENT AND
  REGISTRAR BY: AUTHORIZED SIGNATURE THIS CERTIFICATE IS TRANSFERABLE IN JERSEY
  CITY, NJ, NEW YORK, NY AND PITTSBURGH, PA

  






 


 














	
  

  	
  SIGNATURE(S)
  GUARANTEED: 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 S.E.C. RULE 17Ad-15. TEN COM — as tenants in common TEN ENT — as
  tenants by the entireties JT TEN — as joint tenants with right of
  survivorship and not as tenants in common Additional abbreviations may also
  be used though not in the above list. For value received, hereby sell, assign
  and transfer unto 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 WHATEVER. 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: NOTICE: Shares PLEASE PRINT OR TYPEWRITE NAME
  AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE of the common stock represented
  by the within Certificate, and do hereby irrevocably constitute and appoint
  to transfer the said stock on the books of the within-named Corporation with
  full power of substitution in the premises. Dated: PLEASE INSERT SOCIAL
  SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE UNIF GIFT MIN ACT —
  Custodian (Cust) (Minor) under Uniform Gifts to Minors Act (State) UNIF TRF
  MIN ACT — Custodian (until age ) (Cust) under Uniform Transfers (Minor) to
  Minors Act (State) Attorney KEEP THIS CERTIFICATE IN A SAFE PLACE. IF IT IS
  LOST, STOLEN, MUTILATED OR DESTROYED, THE CORPORATION WILL REQUIRE A BOND OF
  INDEMNITY AS A CONDITION TO THE ISSUANCE OF A REPLACEMENT CERTIFICATE. WORLD
  HEART CORPORATION