OFFICE LEASE

         THIS OFFICE LEASE ("Lease") is made between SPIEKER PROPERTIES, L.P., a
California  limited  partnership  ("Landlord")  and VERTICA  SOFTWARE,  INC.,  a
Colorado  Corporation  ("Tenant"),  as of  December  1, 1999 (the  "date of this
Lease").

                             BASIC LEASE INFORMATION

PROJECT:          Baybridge Office Plaza

BUILDING:         5801 Christie Avenue, Emeryville, CA 94608


DESCRIPTION OF PREMISES:  Suite  390  (the Premises is as outlined on Exhibit B)

RENTABLE AREA OF PREMISES: approximately    4,344    square feet

PERMITTED USE: General Office

SCHEDULED TERM COMMENCEMENT DATE:   December 1, 1999

SCHEDULED INITIAL TERM :    60 months       SCHEDULED EXPIRATION DATE: 11/30/04

BASE RENT
         12/01/99 - 11/30/00        $ 9,774.00 per month
         12/01/00 - 11/30/01        $10,067.22 per month
         12/01/01 - 11/30/02        $10,369.24 per month
         12/01/02 - 11/30/03        $10,680.32 per month
         12/01/03 - 11/30/04        $11,000.73 per month
         (Subject to provision in Paragraph 22)

SECURITY DEPOSIT: $10,000.00

BASE YEAR FOR OPERATING EXPENSES: Calendar Year 1999
<TABLE>
<CAPTION>
<S>                                                                    <C>
TENANT'S PROPORTIONATE SHARE OF BUILDING: 5.57%                        OF PROJECT: N/A

PARKING DENSITY:  Three (3) spaces per 1,000 useable square            OCCUPANCY DENSITY:  1 person per 150 useable
                  feet of the Premises                                                     square feet of the Premises

TENANT'S NAICS CODE:   541511

TENANT CONTACT:            Name: Hans Nehme
                           Telephone Number: (510) 595-3333
                           FAX: (510) 595-3398

ADDRESSES FOR NOTICES:     To: Tenant                                  To Landlord:
                           5801 Christie Avenue, Suite 390             2200 Powell Street, Suite 200
                           Emeryville, CA 94608                        Emeryville, CA 94608
                           Attn: Hans Nehme                            Attn: Project Manager
                           FAX: (510) 595-3398                         FAX: (510) 594-5608

TENANT'S BILLING ADDRESS (If different from Notice Address): N/A

LANDLORD'S REMITTANCE ADDRESS: Spieker Properties, P.O. Box 45587, Department 11474, San Francisco, CA 94145
</TABLE>

         IN  WITNESS   WHEREOF  the  parties  hereto  have  executed  the  Lease
consisting  of the Foregoing  Basic Lease  information,  the following  Standard
Lease  Provisions  consisting  of Paragraphs 1 through 22 (the  "Standard  Lease
Provision") and Exhibits A, B, C, D and E, all of which are incorporated  herein
by this reference  (collectively,  this  "Lease").  In the event of any conflict
between the provisions of the Basic Lease  information and the provisions of the
Standard Lease Provision, the Standard Lease Provisions shall control.

    "Landlord"                                      "Tenant"

    SPIEKER PROPERTIES, L.P.                        VERTICA SOFTWARE, INC.
    a California limited partnership                a Colorado corporation

    By:   Spieker Properties, Inc.
    a Maryland corporation, its general partner

         By:     /s/ John R. Winther                By:    /s/ Hans Nehme
             ---------------------------                ------------------------


         Its:                                       Its:
              --------------------------                ------------------------
              Senior Vice President                  President


         Date:   12/22/99                           Date:   12/2/99
               -------------------------                  ----------------------