EX-4.1
from S-1/A
2 pages
Cb Incorporated Under the Laws of the State of Delaware This Certifies That Cusip 13089p 10 1 See Reverse for Certain Definitions Is the Record Holder of Fully Paid and Nonassessable Shares of Common Stock, $0.0001 Par Value, of Calithera Biosciences, Inc. Transferable 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 Until Countersigned by the Transfer Agent and Registered by the Registrar. Witness the Facsimile Seal of the Corporation and the Facsimile Signatures of Its Duly Authorized Officers. Dated: President and Chief Executive Officer Calithera Biosciences, Inc. Corporate Seal March 9, 2010 Delaware Secretary Countersigned and Registered: American Stock Transfer & Trust Company, LLC (New York, Ny) Transfer Agent and Registrar By: Authorized Signature
12/34/56