BioHorizons, Inc. Watch

from S-1/A 2 pages 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

from S-1 8 pages Warrant to Purchase Capital Stock

from S-1 55 pages Stockholders’ Agreement BioHorizons, Inc

from S-1 155 pages Amended and Restated Stockholders’ Agreement BioHorizons, Inc