from S-1/A
1 page
<page> [Acme Packet Logo] Number Shares Ap Acme Packet, Inc. Incorporated Under the Laws Cusip 004764 10 6 of the State of Delaware See Reverse for Certain Definitions - This Certifies That Is the Owner of - Full Paid and Non-Assessable Shares of Common Stock, Par Value $0.001 Per Share of - Acme Packet, 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 Until 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. Dated: Acme Packet, Inc. Corporate Seal President 2000 Treasurer Delaware Countersigned and Registered: By Transfer Agent and Registrar Authorized Officer
