Exhibit 4.1


 




	
  

  	
  COMMON STOCK
  COMMON STOCK BH  BioHorizons, Inc.
  INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE SEE REVERSE FOR CERTAIN
  DEFINITIONS THIS CERTIFICATE IS TRANSFERABLE IN JERSEY CITY, NJ, NEW YORK, NY
  AND PITTSBURGH, PA THIS CERTIFIES THAT SPECIMEN IS THE RECORD HOLDER OF FULLY
  PAID AND NONASSESSABLE SHARES OF COMMON STOCK, OF
  $0.0001 PAR VALUE, OF BioHorizons, Inc.
  transferable on the books of the Corporation by the holder hereof in person
  or by duly authorized attorney upon surrender of this certificate properly
  endorsed. This certificate is not valid unless countersigned and registered
  by the Transfer Agent and Registrar. Witness the facsimile seal of the
  Corporation and the facsimile signatures of its duly authorized officers. BIOHORIZONS® Dated: COUNTERSIGNED AND REGISTERED: MELLON
  INVESTOR SERVICES LLC TRANSFER AGENT AND REGISTRAR. BY AUTHORIZED SIGNATURE.
  Treasurer and Chief Financial Officer President and Chief Executive Officer CERTIFICATE OF STOCK

  
	
   

  	
   

  

















 




	
  

  	
  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 TEN ENT — as tenants by the entireties JT TEN — as joint tenants
  with right of survivorship and not as tenants in common UNIF
  GIFT MIN ACT — Custodian (Cust) (Minor) Act (State)
  UNIF  TRF MIN ACT —
  Custodian (Cust) Under Uniform Transfers (Minor) to
  Minors 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 common 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 WHATEVER. 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
  S.E.C. RULE 17Ad-15. A statement of the powers,
  designations, preferences and relative, participating, optional or other
  special rights of each class of stock or series thereof and the
  qualifications, limitations or restrictions of such preferences and/or rights
  as established, from time to time, by the Certificate of Incorporation of the
  Corporation and by any certificate of determination, the number of shares
  constituting each class and series, and the designations thereof, may be
  obtained by the holder hereof upon request and without charge at the
  principal office of the Corporation.