Carbon Black, Inc. Watch

from S-1/A 2 pages Common Stock Common Stock Shares Cb Carbon Black, Inc. Incorporated Under the Laws of the State of Delaware See Reverse for Certain Definitions Cusip 981558 10 9 This Certifies That Is the Owner of Fully Paid and Non-Assessable Shares of Common Stock, $0.001 Par Value Per Share, of Carbon Black, Inc. (Hereinafter Called the “Company”), Transferable on the Books of the Company in Person or by Duly Authorized Attorney, Upon Surrender of This Certificate Properly Endorsed. This Certificate and the Shares Represented Hereby, Are Issued and Shall Be Held Subject to All of the Provisions of the Certificate of Incorporation, as Amended, and the By-Laws, as Amended, of the Company (Copies of Which Are on File With the Company and With the Transfer Agent), to All of Which Each Holder, by Acceptance Hereof, Assents. This Certificate Is Not Valid Until Countersigned and Registered by the Transfer Agent and Registrar. Witness the Facsimile Seal of the Company and Facsimile Signatures of Its Duly Authorized Officers. Dated: Seal December 19, 2002 Secretary President Countersigned and Registered: American Stock Transfer & Trust Company, LLC (Brooklyn, Ny) Transfer Agent and Registrar By: Authorized Signature

from S-1 10 pages Bit9, Inc. Issued on Void After

from S-1 9 pages Warrant to Purchase Common Stock of Bit9, Inc

from S-1 12 pages Warrant to Purchase Stock

from S-1 12 pages Warrant to Purchase Stock

from S-1 71 pages Eighth Amended and Restated Investor Rights Agreement

from DRS 10 pages Bit9, Inc. Issued on Void After

from DRS 9 pages Warrant to Purchase Common Stock of Bit9, Inc

from DRS 12 pages Warrant to Purchase Stock

from DRS 12 pages Warrant to Purchase Stock

from DRS 71 pages Eighth Amended and Restated Investor Rights Agreement