Omthera Pharmaceuticals, Inc. Watch

from S-1/A 14 pages Warrant Agreement to Purchase Shares of Preferred Stock of Omthera Pharmaceuticals, Inc. Effective as of 10:00 A.M., Eastern Time, on April 1, 2013

from S-1/A 2 pages A Incorporated Under the Laws of the State of Delaware Common Stock See Reverse for Certain Definitions Cusip 68217a 10 3 This Certifies That Is the Record Holder of Fully Paid and Non-Assessable Shares of Common Stock, $0.001 Par Value, of Omthera Pharmaceuticals, Inc. Transferable Only on the Books of the Corporation in Person or by Duly Authorized Attorney, Upon Surrender of This Certificate Properly Endorsed. This Certificate Is Not Valid Unless Countersigned by the Transfer Agent and Registered by the Registrar. in Witness Whereof, the Facsimile Signatures of the Corporation’s Duly Authorized Officers. Dated: Treasurer President Countersigned and Registered: American Stock Transfer & Trust Company, LLC (Brooklyn, Ny) Transfer Agent and Registrar by Authorized Signature Omthera Pharmaceuticals, Inc

from S-1 7 pages Omthera Pharmaceuticals, Inc. Secured Convertible Promissory Note

from S-1 8 pages Omthera Pharmaceuticals, Inc. Warrant to Purchase Stock