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Exhibit 3.1


CERTIFICATE OF INCORPORATION
OF
PROS HOLDINGS, INC.

        I, the undersigned, for the purposes of incorporating and organizing a corporation under the General Corporate Law of the State of Delaware, do execute this Certificate of Incorporation and do hereby CERTIFY AS FOLLOWS:


ARTICLE I

        The name of the Corporation is PROS Holdings, Inc. (the "Corporation").


ARTICLE II

        The address of the Corporation's registered office in the State of Delaware is 2711 Centreville Road, Suite 400, in the City of Wilmington, County of New Castle. The name of the Corporation's registered agent at such address is the Corporation Service Company.


ARTICLE III

        The nature of the business and purpose to be conducted or promoted by the Corporation is to engage in any lawful act or activity for which corporations may be organized under the General Corporation Law of the State of Delaware.


ARTICLE IV

        The total number of shares of capital stock of all classes which the Corporation shall have authority to issue is 35,842,624 shares of which (a) 7,842,624 shares shall be preferred stock, par value $.001 per share ("Preferred Stock"), and (b) 28,000,000 shares shall be common stock, par value $.001 per share ("Common Stock").

        Except as otherwise restricted by this Certificate of Incorporation, the Corporation is authorized to issue, from time to time, all or any portion of the capital stock of the Corporation which may have been authorized but not issued, to such person or persons and for such lawful consideration as it may deem appropriate, and generally in its absolute discretion to determine the terms and manner of any disposition of such authorized but unissued capital stock.

        Any and all such shares issued for which the full consideration has been paid or delivered shall be deemed fully paid shares of capital stock, and the holder of such shares shall not be liable for any further call or assessment or any other payment thereon.



        The designations and the powers, preferences and rights, and the qualifications, limitations or restrictions of the shares of each class of stock are as follows:


PREFERRED STOCK

        Preferred Stock may be issued from time to time by the Board of Directors as shares of one or more series. Subject to the provisions hereof and the limitations prescribed by law, the Board of Directors is hereby vested with the authority and is expressly authorized, prior to issuance, by adopting resolutions providing for the issuance of, or providing for a change in the number of, shares of any particular series and, if and to the extent from time to time required by law, by filing a certificate pursuant to the General Corporation Law (or other law hereafter in effect relating to the same or substantially similar subject matter), to establish or change the number of shares to be included in each such series and to fix the designation and relative powers, preferences and rights and the qualifications and limitations or restrictions thereof relating to the shares of each such series. The vested authority of the Board of Directors with respect to each series shall include, but not be limited to, the determination of the following:

        (a)   the distinctive serial designation of such series and the number of shares constituting such series (provided that the aggregate number of shares constituting all series of Preferred Stock shall not exceed 7,842,624 shares);

        (b)   the annual dividend rate, if any, on shares of such series and the preferences, if any, over any other series (or of any other series over such series) with respect to dividends, and whether dividends shall be cumulative and, if so, from which date or dates;

        (c)   whether the shares of such series shall be redeemable and, if so, the terms and conditions of such redemption, including the date or dates upon and after which such shares shall be redeemable, and the amount per share payable in case of redemption, which amount may vary under different conditions and at different redemption dates;

        (d)   the obligation, if any, of the Corporation to purchase or redeem shares of such series pursuant to a sinking fund or purchase fund and, if so, the terms of such obligation;

        (e)   whether shares of such series shall be convertible into, or exchangeable for, shares of stock of any other class or classes or any stock of any series of the same class or any other class or classes or any evidences of indebtedness and, if so, the terms and conditions of such conversion or exchange, including the price or prices or the rate or rates of conversion or exchange and the terms of adjustment, if any;

        (f)    whether the shares of such series shall have voting rights, in addition to the voting rights provided by law, and if so, the terms of such voting rights, including, without limitation, whether such shares shall have the right to vote with the Common Stock on issues on an equal, greater or lesser basis;

        (g)   the rights of the shares of such series in the event of a voluntary or involuntary liquidation, dissolution, winding up or distribution of assets of the Corporation;

        (h)   whether the shares of such series shall be entitled to the benefit of conditions and restrictions upon (i) the creation of indebtedness of the Corporation or any subsidiary, (ii) the issuance of any additional stock (including additional shares of such series or of any other series) or (iii) the payment of dividends or the making of other distributions on the purchase, redemption or other acquisition by the Corporation or any subsidiary of any outstanding stock of the Corporation; and

        (i)    any other relative rights, powers, preferences, qualifications, limitations or restrictions thereof relating to any such series.

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        Except where otherwise set forth in the resolution or resolutions adopted by the Board of Directors providing for the issuance of any series of Preferred Stock, the number of shares comprising such series may be increased (but not above the total number of authorized shares of the class) or decreased (but not below the number of shares then outstanding) from time to time by like action of the Board of Directors. The shares of Preferred Stock of any one series shall be identical with the other shares in such series in all respects except as to the dates from and after which dividends thereon shall cumulate, if cumulative.

        Shares of any series of Preferred Stock which have been redeemed (whether through the operation of a sinking fund or otherwise) or purchased by the Corporation, or which, if convertible or exchangeable, have been converted into or exchanged for shares of stock of any other class or classes shall have the status of authorized and unissued shares of Preferred Stock and may be reissued as a part of the series of which they were originally a part or may be reclassified and reissued as part of a new series of Preferred Stock to be created by resolution or resolutions of the Board of Directors or as part of any other series of Preferred Stock, all subject to the conditions or restrictions on issuance set forth in the resolution or resolutions adopted by the Board of Directors providing for the issuance of any series of Preferred Stock and to any filing required by law.

        Subject to the rights of any outstanding shares of any series of Preferred Stock, this Certificate of Incorporation may be amended from time to time in a manner that would solely modify or change the relative powers, preferences and rights and the qualifications and limitations or restrictions of any issued shares of any series of Preferred Stock then outstanding with the only required vote or consent for approval of such amendment being the affirmative vote or consent of the holders of a majority of the outstanding shares of the series of Preferred Stock so affected provided that the powers, preferences and rights and the qualification and limitations or restrictions of such series after giving effect to such amendment are no greater than the powers, preferences and rights and the qualifications and limitations or restrictions permitted to be fixed and determined by the Board of Directors with respect to the establishment of any new series of shares of Preferred Stock pursuant to the authority vested in the Board of Directors by this Article IV. Approval of any such amendment by the holders of the Common Stock shall not be required and any such amendment shall be deemed not to have affected the holders of the Common Stock adversely.

        Subject to the rights of any outstanding shares of any series of Preferred Stock, the number of authorized shares of Preferred Stock may be increased or decreased by the affirmative vote of the holders of a majority of the stock of the Corporation entitled to vote without the separate vote of holders of Preferred Stock as a class.


A.    SERIES A CONVERTIBLE REDEEMABLE PREFERRED STOCK

        1.    Designation.    A total of three million nine hundred twenty-one thousand three hundred and twelve (3,921,312) shares of the Corporation's Preferred Stock shall be designated as Series A Convertible Redeemable Preferred Stock, $.001 par value per share (the "Convertible Preferred Stock").

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        2.    Election of Directors; Voting.    

        3.    Dividends.    The holders of Convertible Preferred Stock shall be entitled to receive, out of funds legally available therefor, cumulative (non-compounding) dividends on the Convertible Preferred Stock in cash, at the rate per annum of four and two-tenths percent (4.2%) of the Convertible Base Liquidation Preference Amount (as defined in Section A.4 below), or $0.26777 per share of Convertible Preferred Stock as of June 8, 1998 (the "Convertible Cumulative Dividend"). Such dividends will accumulate commencing as of the date of issuance of the Convertible Preferred Stock and shall be cumulative, to the extent unpaid, whether or not they have been declared and whether or not there are profits, surplus or other funds of the Corporation legally available for the payment of dividends. Convertible Cumulative Dividends shall become due and payable with respect to any share of Convertible Preferred Stock as provided in Sections A.4, A.5, A.6, B.4 and B.5. So long as any shares

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of Convertible Preferred Stock are outstanding and the Convertible Cumulative Dividends have not been paid in full in cash: (a) no dividend whatsoever shall be paid or declared, and no distribution; except as permitted in Section A.8(e), shall be made, on any capital stock of the Corporation ranking junior to the Convertible Preferred Stock; and, (b) except as permitted by Sections A.8(c)(ii), (iii), and (iv), no shares of capital stock of the Corporation ranking junior to the Convertible Preferred Stock shall be purchased, redeemed or acquired by the Corporation and no monies shall be paid into or set aside or made available for a sinking fund for the purchase, redemption or acquisition thereof. All numbers relating to the calculation of dividends pursuant to this Section A.3 shall be subject to equitable adjustment in the event of any stock split, combination, reorganization, recapitalization, reclassification or other similar event involving a change in the Convertible Preferred Stock.

        4.    Liquidation.    

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        5.    Redemption.    

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        6.    Conversion.    The holders of the Convertible Preferred Stock shall have the following conversion rights:

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        7.    Adjustments.    The Conversion Price in effect from time to time shall be subject to adjustment from and after January 15, 1999, and regardless of whether any shares of Convertible Preferred Stock are then issued and outstanding as follows:

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        8.    Covenants.    So long as any shares of Convertible Preferred Stock (or Redeemable Preferred Stock, as applicable) shall be outstanding, the Corporation shall not, without first having provided the written notice of such proposed action to each holder of outstanding shares of Convertible Preferred Stock (or Redeemable Preferred Stock, as applicable) and having obtained the affirmative vote or written consent of the holders of more than fifty percent (50%) in voting power of the outstanding shares of Convertible Preferred Stock (or Redeemable Preferred Stock, as applicable), voting as a single class, with each share of Convertible Preferred Stock (or Redeemable Preferred Stock, as applicable) entitling the holder thereof to one vote per share of Convertible Preferred Stock held by such holder:

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        9.    Notice    

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        10.    No Reissuance of Convertible Preferred Stock.    No share or shares of Convertible Preferred Stock acquired by the Corporation by reason of redemption, purchase, conversion or otherwise shall be reissued, and all such shares shall be cancelled, retired and eliminated from the shares which the Corporation shall be authorized to issue.


B.    REDEEMABLE PREFERRED STOCK

        1.    Designation; Ranking.    A total of three million nine hundred twenty-one thousand three hundred and twelve (3,921,312) shares of the Corporation's Preferred Stock shall be designated as Redeemable Preferred Stock, $.001 par value per share (the "Redeemable Preferred Stock").

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        2.    Election of Directors; Voting.    

        3.    Dividends.    The holders of outstanding shares of Redeemable Preferred Stock shall be entitled to receive, out of any funds legally available therefor, cumulative (non-compounding) dividends on the Redeemable Preferred Stock in cash, at the rate per annum of 3% of $4.46279 per share (adjusted appropriately for stock splits, stock dividends, recapitalizations and the like with respect to the Redeemable Preferred Stock), or $0.13388 per share of Redeemable Preferred Stock (a "Redeemable Cumulative Dividend"). Such dividends will accrue commencing as of the date of issuance of the Redeemable Preferred Stock and be cumulative, to the extent unpaid, whether or not they have been declared and whether or not there are profits, surplus or other funds of the Corporation legally available for the payment of dividends. Redeemable Cumulative Dividends shall become due and payable with respect to any share of Redeemable Preferred Stock as provided in Section B.4 and Section B.5. So long as any shares of Redeemable Preferred Stock are outstanding and either the

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Redeemable Cumulative Dividends or the Convertible Cumulative Dividends, have not been paid in full in cash: (A) no dividend whatsoever shall be paid or declared, and no distribution shall be made, on any capital stock of the Corporation ranking junior to the Redeemable Preferred Stock; and (B) no shares of capital stock of the Corporation ranking junior to the Redeemable Preferred Stock shall be purchased, redeemed or acquired by the Corporation and no monies shall be paid into or set aside or made available for a sinking fund for the purchase, redemption or acquisition thereof except as permitted by Section A.8(c)(iv). All numbers relating to the calculation of dividends pursuant to this Section B.3 shall be subject to equitable adjustment in the event of any stock split, combination, reorganization, recapitalization, reclassification or other similar event involving a change in the Redeemable Preferred Stock.

        4.    Liquidation.    Upon any Liquidation Event, each holder of outstanding shares of Redeemable Preferred Stock shall be entitled to be paid out of the assets of the Corporation available for the distribution to stockholders, whether such assets are capital, surplus or earnings, and before any amount shall be paid or distributed to the holders of Common Stock or of any other stock ranking on liquidation junior to the Redeemable Preferred Stock, an amount in cash equal to the sum of (a) $4.46279 per share of Redeemable Preferred Stock held by such holder (adjusted appropriately for stock splits, stock dividends, recapitalizations and the like with respect to the Redeemable Preferred Stock), plus (b) any accumulated but unpaid dividends to which such holder of outstanding shares of Redeemable Preferred Stock is entitled pursuant to Sections B.3 and B.5(d) hereof (the sum of clauses (a) and (b) being referred to herein as the "Redeemable Base Liquidation Amount"), plus (c) any accumulated but unpaid dividends or other amounts due in respect of the shares Convertible Preferred Stock converted into such shares of Redeemable Preferred Stock, plus (d) any interest accrued pursuant to Section B.5(c) to which such holder of outstanding shares of Redeemable Preferred Stock is entitled, if any (the sum of clauses (a), (b) and (c) being referred to herein as the "Redeemable Liquidation Preference Amount"; provided, however, that if, upon any Liquidation Event, the amounts payable with respect to the Redeemable Liquidation Preference Amount are not paid in full, the holders of the Redeemable Preferred Stock shall share ratably in any distribution of assets in proportion to the full respective preferential amounts to which they are entitled.

        5.    Redemption.    

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        6.    Notice.    In the event that the Corporation provides or is required to provide notice to any holder of Convertible Preferred Stock or any holder of Common Stock in accordance with the provisions of this Certificate (including the provisions of Section A.9) and/or the Corporation's bylaws, the Corporation shall at the same time provide a copy of any such notice to each holder of outstanding shares of Redeemable Preferred Stock.

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        7.    No Reissuance of Redeemable Preferred Stock.    No share or shares of Redeemable Preferred Stock acquired by the Corporation by reason of redemption, purchase, conversion or otherwise shall be reissued, and all such shares shall be cancelled, retired and eliminated from the shares which the Corporation shall be authorized to issue.

        8.    Covenants.    So long as any shares of Redeemable Preferred Stock shall be outstanding, the provisions of Section A.8 shall apply to all shares of Redeemable Preferred Stock as if such shares were shares of Convertible Preferred Stock.


COMMON STOCK

        Subject to all of the rights of the Preferred Stock, and except as may be expressly provided with respect to the Preferred Stock herein, by law or by the Board of Directors pursuant to this Article IV:

        (a)   dividends may be declared and paid or set apart for payment upon Common Stock out of any assets or funds of the Corporation legally available for the payment of dividends and may be payable in cash, stock or otherwise;

        (b)   the holders of Common Stock shall have the exclusive right to vote for the election of directors and on all other matters requiring stockholder action, each share being entitled to one vote; and

        (c)   upon the voluntary or involuntary liquidation, dissolution or winding up of the Corporation, after the payment or provision for payment of all debts and liabilities of the Corporation and all preferential amounts to which the holders of Preferred Stock are entitled with respect to the distribution of assets in liquidation, the net assets of the Corporation shall be distributed pro rata to the holders of Common Stock in accordance with their respective rights and interests to the exclusion of the holders of Preferred Stock.


ARTICLE V

        The name and address of the sole incorporator is John J. Gilluly III, Gray Cary Ware & Freidenrich LLP, 1221 South MoPac Expressway, Suite 400, Austin, TX 78746-6875.


ARTICLE VI

        The Corporation is to have a perpetual existence.


ARTICLE VII

        Election of directors need not be by written ballot unless the bylaws of the Corporation shall so provide.

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ARTICLE VIII

        No person shall be personally liable to the Corporation or its stockholders for monetary damages for breach of his or her fiduciary duty as a Director of the Corporation, except for liability (i) for any breach of the Director's duty of loyalty to the Corporation or its stockholders, (ii) for any acts or omissions not in good faith or which involve intentional misconduct or a knowing violation of law, (iii) under Section 174 of the General Corporation Law of the State of Delaware or (iv) for any transaction from which the Director derived an improper personal benefit. If the General Corporation Law of the State of Delaware hereafter is amended to authorize further elimination or limitation of the liability of directors, then the liability of a Director of the Corporation, in addition to the limitation on personal liability provided herein, shall be limited to the fullest extent permitted by the amended General Corporation Law of the State of Delaware. Any repeal or modification of this paragraph by the stockholders of the Corporation shall be prospective only, and shall not adversely affect any limitation on the personal liability of a Director of the Corporation existing at the time of such repeal or modification.

        The Corporation shall indemnify any director or officer to the fullest extent permitted by Delaware law.


ARTICLE IX

        All of the powers of the Corporation, insofar as the same may be lawfully vested by this Certificate of Incorporation in the Board of Directors of the Corporation, are hereby conferred upon the Board of Directors of the Corporation.

        In furtherance of and not in limitation of the foregoing provisions of this Article IX, and for the purpose of the orderly management of the business and the conduct of the affairs of the Corporation, the Board of Directors of the Corporation shall have the power to adopt, amend or repeal from time to time the bylaws of the Corporation, subject to the right of the stockholders of the Corporation entitled to vote thereon to adopt, amend or repeal the bylaws of the Corporation.


ARTICLE X

        The Corporation reserves the right to amend, alter, change or repeal any provision contained in this Certificate of Incorporation, in the manner now or hereafter prescribed by statute, and all rights conferred upon stockholders herein are granted subject to this reservation.

Dated: August 29, 2002    
    /s/  JOHN J. GILLULY III        
John J. Gilluly III, Sole Incorporator

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CERTIFICATE OF INCORPORATION OF PROS HOLDINGS, INC.
ARTICLE I
ARTICLE II
ARTICLE III
ARTICLE IV
PREFERRED STOCK
A. SERIES A CONVERTIBLE REDEEMABLE PREFERRED STOCK
B. REDEEMABLE PREFERRED STOCK
COMMON STOCK
ARTICLE V
ARTICLE VI
ARTICLE VII
ARTICLE VIII
ARTICLE IX
ARTICLE X