8-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of Report: (Date of earliest event reported): August 27, 2008 (August 21, 2008)

PROS Holdings, Inc.

(Exact Name of Registrant as Specified in its Charter)

Delaware	76-0168604
(State or Other Jurisdiction of Incorporation)	(I.R.S. Employer Identification No.)
3100 Main Street, Suite 900
Houston, TX, 77002	(713) 335-5151
(Address of principal executive offices)	(Registrant’s Telephone Number, including Area Code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

o Written communications pursuant to Rule 425 under the Securities Act (17CFR230.425)

o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17CFR240.14a-12)

o Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17CFR240.14d-2(b))

o Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17CFR240.13e-4(c))

Item 5.02. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

(d)On August 21, 2008, the PROS Holdings, Inc. (the “Company”) Board of Directors appointed Ellen Keszler as a director of the Company effective August 21, 2008.  Mrs. Keszler will hold office until the Company’s 2008 Annual Meeting of Stockholders. Mrs. Keszler was also appointed to the Audit Committee and the Nominating and Governance Committee of the Board.  There were no arrangements or understandings between Mrs. Keszler and any other person pursuant to which Mrs. Keszler was appointed as a director.

Under our director compensation policy Mrs. Keszler is entitled to receive a grant of an option to purchase 30,000 shares of our common stock, an annual retainer of $20,000 and a retainer of $7,500 for serving on our audit committee.  In addition, she is entitled to receive $1,000 per in-person meeting of the board, $500 per telephonic meeting of the board or any committee that is not an in-person meeting and $750 per in-person meeting of any of our audit or nominating and governance committees.  All fees are paid on a quarterly basis.  We will reimburse her for reasonable out-of-pocket expenses incurred in connection with their attendance at our board or committee meetings.  The grant of option to purchase 30,000 shares of our common stock awarded to each non-employee member of our Board of Directors are immediately exercisable and vest on a monthly basis in equal installments over 36 months.

Item 5.03. Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year

On August 21, 2008, the Board of Directors amended the Company’s Amended and Restated Bylaws (as amended, the “Bylaws”).  The following description of the amendment to the Bylaws is qualified in its entirety by reference to the full text of the amendment filed as Exhibit 3.3.

(a)   Section 2.02 is amended to increase the size of the Board of Directors to no more than nine.

Item 8.01. Other Events

On August 25, 2008 the Company issued a press release announcing the Board of Directors of the Company approved a $15.0 million stock repurchase program, this press release is attached as Exhibit 99.1.

Item 9.01 Exhibit

(d)  Exhibits
3.3	Amended and Restated Bylaws.
99.1	Press Release dated August 25, 2008 announcing the appointment of Ellen Keszler to the PROS Holdings Board of Directors.
99.2	PROS Holdings, Inc. press release dated August 25, 2008 announcing stock repurchase program.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

	PROS HOLDINGS, INC.
Date: August 27, 2008
		/s/ Charles H. Murphy
		Charles H. Murphy
		Chief Financial Officer and Executive Vice President

Exhibit Index

Exhibit No.	Description
3.3	Amended and Restated Bylaws.
99.1	Press Release dated August 25, 2008 announcing the appointment of Ellen Keszler to the PROS Holdings Board of Directors.
99.2	PROS Holdings, Inc. press release dated August 25, 2008 announcing stock repurchase program.

EX-3.3

Exhibit 3.3

AMENDED AND RESTATED

BYLAWS

OF

PROS HOLDINGS, INC.

ARTICLE I

STOCKHOLDERS

Section 1.01.          Annual Meeting.  An annual meeting of stockholders of PROS Holdings, Inc. (the “Corporation”) for the election of directors and for the transaction of such other business as may properly come before the meeting, shall be held at such place, on such date, and at such time as the Board of Directors of the Corporation (the “Board of Directors”) shall each year fix and stated in the notice of the meeting.

Section 1.02.          Voting List.  The officer who has charge of the stock ledger of the corporation shall prepare and make, at least ten (10) days before every meeting of stockholders, a complete list of the stockholders entitled to vote at the meeting, arranged in alphabetical order, and showing the address of each stockholder and the number of shares registered in the name of each stockholder.  Such list shall be open to the examination of any stockholder, for any purpose germane to the meeting, during ordinary business hours, for a period of at least ten (10) days prior to the meeting, either at a place within the city where the meeting is to be held, which place shall be specified in the notice, or if not so specified, at the place where the meeting is to be held.  The list shall also be produced and kept at the time and place of the meeting during the whole time thereof, and may be inspected by any stockholder who is present.

Section 1.03.          Special Meeting.  Special meetings of the stockholders, for any purpose or purposes prescribed in the notice of the meeting, may be called by the Board of Directors pursuant to a resolution adopted by a majority of the total number of authorized directors (whether or not there exist any vacancies in previously authorized directorships at the time any such resolution is presented to the Board of Directors for adoption) and shall be held at such place, on such date, and at such time as the Board of Directors shall fix.  Business transacted at special meetings shall be confined to the purpose or purposes stated in the notice.

Section 1.04.          Notice of Meeting.  Notice of the annual, and each special meeting of stockholders, stating the time, place and purpose or purposes thereof, shall be given to each stockholder entitled to vote thereat, not less than ten (10) nor more than sixty (60) days before the meeting, except as otherwise provided herein or required by law (meaning, here and hereinafter, as required from time to time by the Delaware General Corporation Law or the Corporation’s Certificate of Incorporation (the “Certificate”)).

When a meeting is adjourned to another place, date or time, notice need not be given of the adjourned meeting if the place, date and time thereof are announced at the meeting at which the adjournment is taken; provided, however, that if the date of any adjourned meeting is more than thirty (30) days after the date for which the meeting was originally noticed, or if a new record date is fixed for the adjourned meeting, notice of the place, date, and time of the adjourned meeting shall be given in conformity herewith.  At any adjourned meeting, any business may be transacted which might have been transacted at the original meeting.

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Section 1.05.          Quorum.  The holders of a majority of the shares of the Corporation’s capital stock issued and outstanding and entitled to vote thereat, present in person or represented by proxy, shall constitute a quorum at any meeting of stockholders for the transaction of business, except as otherwise provided by law or by the Certificate.  If a quorum shall fail to attend any meeting, the chairman of the meeting or the holders of a majority of the shares of stock entitled to vote who are present, in person or by proxy, may adjourn the meeting to another place, date, or time.  If a notice of any adjourned special meeting of stockholders is sent to all stockholders entitled to vote thereat, stating that it will be held with those present constituting a quorum, then except as otherwise required by law, those present at such adjourned meeting shall constitute a quorum, and all matters shall be determined by a majority of the votes cast at such meeting.

Section 1.06.          Organization.  Such person as the Board of Directors may have designated or, in the absence of such a person, the Chief Executive Officer of the Corporation or, in his absence, such person as may be chosen by the holders of a majority of the shares entitled to vote who are present, in person or by proxy, shall call to order any meeting of the stockholders and act as chairman of the meeting.  If the Secretary of the Corporation is a member of the Board of Directors, the Secretary shall be the secretary of the meeting.  In the absence of the Secretary of the Corporation, the secretary of the meeting shall be such person as the chairman of such meeting appoints.

Section 1.07.          Conduct of Business.  The chairman of the meeting shall call the meeting to order, establish the agenda, and conduct the business of the meeting in accordance therewith or, at the chairman’s discretion, it may be conducted otherwise in accordance with the wishes of the stockholders in attendance.  The date and time of the opening and closing of the polls for each matter upon which the stockholders will vote at the meeting shall be announced at the meeting.

The chairman shall also conduct the meeting in an orderly manner, rule on the precedence of, and procedure on, motions and other procedural matters, and exercise discretion with respect to such procedural matters with fairness and good faith toward all those entitled to take part.  Without limiting the foregoing, the chairman may (a) restrict attendance at any time to bona fide stockholders of record and their proxies and other persons in attendance at the invitation of the presiding officer or Board of Directors, (b) restrict use of audio or video recording devices at the meeting and (c) impose reasonable limits on the amount of time taken up at the meeting on discussion in general or on remarks by any one stockholder.  Should any person in attendance become unruly or obstruct the meeting proceedings, the chairman shall have the power to have such person removed from the meeting.  Notwithstanding anything in the Bylaws to the contrary, no business shall be conducted at a meeting except in accordance with the procedures set forth in this Section 1.08 and Section 1.09 below.  The chairman of a meeting may determine and declare to the meeting that any proposed item of business was not brought before the meeting in accordance with the provisions of this Section 1.08 and Section 1.09, and if he should so determine, he shall so declare to the meeting and any such business not properly brought before the meeting shall not be transacted.

Section 1.08.          Notice of Stockholder Business; Nomination of Director Candidates.  At an annual or special meeting of the stockholders, only such business shall be conducted as shall have been properly brought before the meeting.  To be properly brought before a meeting, business (including nominations for the election of directors) must be (a) specified in the notice of meeting (or any supplement thereto) given by or at the direction of the Board of Directors, (b) properly brought before the meeting by or at the direction of the Board of Directors, (c) properly brought before an annual meeting by a stockholder or (d) properly brought before a special meeting by a stockholder, but if, and only if, the notice of a special meeting provides for business to be brought before the meeting by stockholders.  For business (including nominations for the election of directors) to be properly brought before a meeting by a stockholder, the stockholder must have given timely notice thereof in writing to the Secretary of the

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Corporation. To be timely, a stockholder proposal to be presented at an annual meeting or a nomination for the election of directors shall be received at the Corporation’s principal executive offices not less than one hundred twenty (120) calendar days in advance of the date that the Corporation’s (or the Corporation’s predecessor’s) proxy statement was released to stockholders in connection with the previous year’s annual meeting of stockholders, except that if no annual meeting was held in the previous year or the date of the annual meeting has been changed by more than thirty (30) calendar days from the date contemplated at the time of the previous year’s proxy statement, or in the event of a special meeting, notice by the stockholder to be timely must be received not later than the close of business on the tenth (10th) day following the day on which such notice of the date of the meeting was mailed or a public announcement of the meeting date was made. (For the purposes of these Bylaws, “public announcement” shall mean disclosure in a press release reported by the Dow Jones News Service, Associated Press or comparable national news service or in a document publicly filed by the Corporation with the Securities and Exchange Commission pursuant to Section 13, 14 or 15(d) of the Securities Exchange Act of 1934 (the “Exchange Act”)).  A stockholder’s notice to the Secretary concerning any business except for the nomination of directors shall set forth as to each matter the stockholder proposes to bring before the annual or special meeting: (a) a brief description of the business desired to be brought before the annual or special meeting and the reasons for conducting such business at the annual or special meeting, (b) the name and address, as they appear on the Corporation’s books, of the stockholder proposing such business, (c) the class and number of shares of the Corporation which are beneficially owned by the stockholder and (d) any material interest of the stockholder in such business.  A stockholder’s notice to the Secretary of the Corporation concerning the nomination of directors shall set forth:  (a) the name and address of the stockholder who intends to make the nomination, or the beneficial owner, if any, on whose behalf the nomination is being made and of the person or persons to be nominated, (b) a representation that the stockholder is a holder of record of stock of the Corporation entitled to vote for the election of directors on the date of such notice and intends to appear in person or by proxy at the meeting to nominate the person or persons specified in the notice, (c) a description of all arrangements or understandings between the stockholder or such beneficial owner and each nominee and any other person or persons (naming such person or persons) pursuant to which the nomination or nominations are to be made by the stockholder, (d) such other information regarding each nominee proposed by such stockholder as would be required to be included in a proxy statement filed pursuant to the proxy rules of the Securities and Exchange Commission, had the nominee been nominated, or intended to be nominated, by the Board of Directors and (e) the consent of each nominee to serve as a director of the Corporation if so elected.   Notwithstanding the foregoing, a stockholder shall also comply with all applicable requirements of the Exchange Act and the rules and regulations thereunder with respect to the matters set forth in this Bylaw.  Nothing in this Section 1.08 shall be deemed to affect any rights of stockholders to request inclusion of proposals in the Corporation’s proxy statement pursuant to Rule 14a-8 under the Exchange Act.

Notwithstanding the first paragraph of this Section 1.08, in the event that the number of directors to be elected at an annual meeting is increased and there is no public announcement by the Corporation naming the nominees for the additional directorships at least one hundred thirty (130) days prior to the first anniversary of the date that the Corporation’s (or its predecessor’s) proxy statement was released to stockholders in connection with the previous year’s annual meeting, a stockholder’s notice required by this Section 1.08 shall also be considered timely, but only with respect to nominees for the additional directorships, if it shall be delivered to the Secretary of the Corporation at the principal executive offices of the Corporation not later than the close of business on the tenth (10th) day following the day on which such public announcement is first made by the Corporation.

In the event the Corporation calls a special meeting of stockholders for the purpose of electing one or more directors to the Board of Directors, any such stockholder may nominate a person or persons (as the case may be), for election to such position(s) as are specified in the Corporation’s notice of meeting, if the stockholder’s notice as required by the first paragraph of this Section 1.08 shall be delivered to the

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Secretary of the Corporation at the principal executive offices of the Corporation not earlier than the ninetieth (90th) day prior to such special meeting and not later than the close of business on the later of the seventieth (70th) day prior to such special meeting or the tenth (10th) day following the day on which public announcement is first made of the date of the special meeting and of the nominees proposed by the Board of Directors to be elected at such meeting.  In no event shall the public announcement of an adjournment or postponement of a special meeting commence a new time period (or extend any time period) for the giving of a stockholder’s notice as described above.

Section 1.09.          Proxies and Voting.  At any meeting of the stockholders, every stockholder entitled to vote may vote in person or by proxy authorized by an instrument in writing or by a transmission permitted by law filed in accordance with the procedure established for the meeting.  Any copy, facsimile telecommunication or other reliable reproduction of the writing or transmission created pursuant to this paragraph may be substituted or used in lieu of the original writing or transmission for any and all purposes for which the original writing or transmission could be used, provided that such copy, facsimile telecommunication or other reproduction shall be a complete reproduction of the entire original writing or transmission.  All voting, including on the election of directors but excepting where otherwise required by law, may be by a voice vote; provided, however, that upon demand therefore by a stockholder entitled to vote or by his or her proxy, a stock vote shall be taken.  Every stock vote shall be taken by ballots, each of which shall state the name of the stockholder or proxy voting and such other information as may be required under the procedure established for the meeting.  The corporation may, and to the extent required by law, shall, in advance of any meeting of stockholders, appoint one or more inspectors to act at the meeting and make a written report thereof.  The corporation may designate one or more persons as alternate inspectors to replace any inspector who fails to act.  If no inspector or alternate is able to act at a meeting of stockholders, the person presiding at the meeting may, and to the extent required by law, shall, appoint one or more inspectors to act at the meeting.  Each inspector,  before entering upon the discharge of his duties, shall take and sign an oath faithfully to execute the duties of inspector with strict impartiality and according to the best of his ability.  Every vote taken by ballots shall be counted by an inspector or inspectors appointed by the chairman of the meeting.  All elections shall be determined by a plurality of the votes cast, and except as otherwise required by statute, the Certificate or these bylaws, all other matters shall be determined by a majority of the votes cast affirmatively or negatively.

Section 1.10.          Stockholder Action Without Meeting.  Effective as of the IPO Date, any action required or permitted to be taken by the stockholders of the corporation must be effected at a duly called annual or special meeting of stockholders of the Corporation and may not be effected by any consent in writing by such stockholders.  At all times prior to the IPO Date, any action which may be taken at any annual or special meeting of stockholders may be taken without a meeting and without prior notice, if a consent in writing, setting forth the actions so taken, is signed by the holders of outstanding shares having not less than the minimum number of votes which would be necessary to authorize or take such action at a meeting at which all shares entitled to vote thereon were present and voted.  All such consents shall be filed with the Secretary of the Corporation and shall be maintained in the corporate records.  Prompt notice of the taking of a corporate action without a meeting by less than unanimous written consent shall be given to those stockholders who have not consented in writing.

An electronic transmission consenting to an action to be taken and transmitted by a stockholder, or by a proxy holder or other person authorized to act for a stockholder, shall be deemed to be written, signed and dated for the purpose of this Section 1.10, provided that such electronic transmission sets forth or is delivered with information from which the corporation can determine (i) that the electronic transmission was transmitted by the stockholder or by a person authorized to act for the stockholder and (ii) the date on which such stockholder or authorized person transmitted such electronic transmission.  The date on which such electronic transmission is transmitted shall be deemed to be the date on which such consent was signed.  No

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consent given by electronic transmission shall be deemed to have been delivered until such consent is reproduced in paper form and until such paper form shall be delivered to the corporation by delivery to its registered office in the State of Delaware, its principal place of business or an officer or agent of the corporation having custody of the books in which proceedings of meetings of stockholders are recorded.

Section 1.11.          Voting of Stock of Certain Holders. Shares of the Corporation’s capital stock standing in the name of another corporation, domestic or foreign, may be voted by such officer, agent or proxy as the bylaws of such corporation may prescribe, or in the absence of such provision, as the Board of Directors of such corporation may determine.  Shares standing in the name of a deceased person may be voted by the executor or administrator of such deceased person, either in person or by proxy.  Shares standing in the name of a guardian, conservator or trustee may be voted by such fiduciary, either in person or by proxy, but no such fiduciary shall be entitled to vote shares held in such fiduciary capacity without a transfer of such shares into the name of such fiduciary.  Shares standing in the name of a receiver may be voted by such receiver.  A stockholder whose shares are pledged shall be entitled to vote such shares, unless in the transfer by the pledgor on the books of the corporation, he has expressly empowered the pledgee to vote thereon, in which case only the pledgee, or his proxy, may represent the stock and vote thereon.

Section 1.12.          Treasury Stock.  The corporation shall not vote, directly or indirectly, shares of its own capital stock owned by it; and such shares shall not be counted in determining the total number of outstanding shares of the corporation’s capital stock.

Section 1.13.          Fixing Record Date.  The Board of Directors may fix in advance a date, which shall not be more than 60 days nor less than 10 days preceding the date of any meeting of stockholders, nor more than 60 days preceding the date for payment of any dividend or distribution, or the date for the allotment of rights, or the date when any change, or conversion or exchange of capital stock shall go into effect, or a date in connection with obtaining a consent, as a record date for the determination of the stockholders entitled to notice of, and to vote at, any such meeting and any adjournment thereof, or entitled to receive payment of any such dividend or distribution, or to receive any such allotment of rights, or to exercise the rights in respect of any such change, conversion or exchange of capital stock, or to give such consent, and in such case such stockholders and only such stockholders as shall be stockholders of record on the date so fixed, shall be entitled to such notice of, and to vote at, any such meeting and any adjournment thereof, or to receive payment of such dividend or distribution, or to receive such allotment of rights, or to exercise such rights, or to give such consent, as the case may be, notwithstanding any transfer of any stock on the books of the corporation after any such record date fixed as aforesaid.

ARTICLE II

BOARD OF DIRECTORS

Section 2.01.          Powers.  The business and affairs of the corporation shall be managed by its Board of Directors, which may exercise all such powers of the corporation and do all such lawful acts and things as are not by law or by the Certificate or by these bylaws directed or required to be exercised or done by the stockholders.

Section 2.02.          Number, Election and Term.  Subject to the rights of the holders of any series of preferred stock to elect directors under specified circumstances, the number of directors which shall constitute the whole Board shall not be more than nine (9),  the exact number within said limits shall be fixed from time to time exclusively by the Board of Directors pursuant to a resolution adopted by a majority of the total number of authorized directors (whether or not there exist any vacancies in

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previously authorized directorships at the time any such resolution is presented to the Board of Directors for adoption).  Effective upon the date of the closing of the corporation’s initial public offering of its common stock (the “IPO Date”), the, directors shall be divided into three classes, with the term of office of the first class to expire at the first annual meeting of stockholders held after the IPO Date; the term of office of the second class to expire at the second annual meeting of stockholders held after the IPO Date; the term of office of the third class to expire at the third annual meeting of stockholders held after the IPO Date; and thereafter for each such term to expire at each third succeeding annual meeting of stockholders after such election.  All directors shall hold office until the expiration of the term for which elected and until their respective successors are elected, except in the case of the death, resignation or removal of any director.  At each annual meeting of stockholders commencing with the first annual meeting held after the IPO Date, (i) directors elected to succeed those directors whose terms expire shall be elected for a term of office to expire at the third succeeding annual meeting of stockholders after their election, with each director to hold office until his or her successor shall have been duly elected and qualified, and (ii) if authorized by a resolution of the Board of Directors, directors may be elected to fill any vacancy on the Board of Directors, regardless of how such vacancy shall have been created.

Section 2.03.          Vacancies and Newly Created Directorships.  Subject to the rights of the holders of any series of Preferred Stock then outstanding, newly created directorships resulting from any increase in the authorized number of directors or any vacancies in the Board of Directors resulting from death, resignation, retirement, disqualification or other cause (including removal from office by a vote of the stockholders as described in Section 2.05 below) may be filled only by a majority vote of the directors then in office, though less than a quorum (and not by stockholders), or by the sole remaining director, and directors so chosen shall hold office for a term expiring at the next annual meeting of stockholders at which the term of office of the class to which they have been elected expires or until such director’s successor shall have been duly elected and qualified.  No decrease in the number of authorized directors shall shorten the term of any incumbent director.

Section 2.04.          Resignation.  Any director may resign by delivering notice in writing or by electronic transmission to the President, Chairman of the Board or Secretary.  Such resignation shall be effective upon receipt unless it is specified to be effective at some other time or upon the happening of some other event.

Section 2.05.          Removal.  Subject to the rights of the holders of any series of Preferred Stock then outstanding, any directors, or the entire Board of Directors, may be removed from office at any time, but only for cause, by the affirmative vote of the holders of a majority of the voting power of all of the outstanding shares of capital stock entitled to vote generally in the election of directors, voting together as a single class.

Section 2.06.          Regular Meeting.  A regular meeting of the Board of Directors shall be held each year, without other notice than this bylaw, at the place of, and immediately following, the annual meeting of stockholders; and other regular meetings of the Board of Directors shall be held each year, at such time and place as the Board of Directors may provide, by resolution, either within or without the State of Delaware, without other notice than such resolution.

Section 2.07.          Special Meeting.  A special meeting of the Board of Directors may be called by the Chairman of the Board of Directors or by the President of the corporation and shall be called by the Secretary on the written request of any two directors.  The Chairman or President so calling, or the directors so requesting, any such meeting shall fix the time and any place, either within or without the State of Delaware, as the place for holding such meeting.

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Section 2.08.          Notice of Special Meeting.  Notice of special meetings of the Board of Directors shall be given to each director at least 48 hours prior to the time of such meeting.  Any director may waive notice of any meeting.  The attendance of a director at any meeting shall constitute a waiver of notice of such meeting, except where a director attends a meeting for the purpose of objecting to the transaction of any business because the meeting is not lawfully called or convened.  Neither the business to be transacted at, nor the purpose of, any special meeting of the Board of Directors need be specified in the notice or waiver of notice of such meeting, except that notice shall be given of any proposed amendment to the bylaws if it is to be adopted at any special meeting or with respect to any other matter where notice is required by statute.

Section 2.09.          Telephone Meetings.  Any member of the Board of Directors, or of any committee thereof, may participate in a meeting by means of conference telephone or similar communications equipment by means of which all persons participating in the meeting can hear each other, and participation in a meeting by such means shall constitute presence in person at such meeting.

Section 2.10.          Quorum.  A majority of the Board of Directors shall constitute a quorum for the transaction of business at any meeting of the Board of Directors, and the act of a majority of the directors present at any meeting at which there is a quorum shall be the act of the Board of Directors, except as may be otherwise specifically provided by statute, by the Certificate or by these bylaws.  If a quorum shall not be present at any meeting of the Board of Directors, the directors present thereat may adjourn the meeting from time to time, without notice other than announcement at the meeting, until a quorum shall be present.

Section 2.11.          Action Without Meeting.  Unless otherwise restricted by the Certificate or these bylaws, any action required or permitted to be taken at any meeting of the Board of Directors, or of any committee thereof as provided in Article IV of these bylaws, may be taken without a meeting, if a written consent thereto is signed by all members of the Board of Directors or of such committee, as the case may be, and such written consent is filed with the minutes of proceedings of the Board of Directors or such committee.

Section 2.12.          Compensation.  Directors, as such, shall not be entitled to any stated salary for their services unless voted by the stockholders or the Board of Directors; but by resolution of the Board of Directors, a fixed sum and expenses of attendance, if any, may be allowed for attendance at each regular or special meeting of the Board of Directors or any meeting of a committee of directors.  No provision of these bylaws shall be construed to preclude any director from serving the corporation in any other capacity and receiving compensation therefor.

ARTICLE III

COMMITTEES OF DIRECTORS

Section 3.01.          Designation, Powers and Name.  The Board of Directors may, by resolution passed by a majority of the whole Board of Directors, designate one or more committees, including, if they shall so determine, an Executive Committee, each such committee to consist of two or more of the directors of the corporation.  The committee shall have and may exercise such of the powers of the Board of Directors in the management of the business and affairs of the corporation as may be provided in such resolution.  The committee may authorize the seal of the corporation to be affixed to all papers that may require it.  The Board of Directors may designate one or more directors as alternate members of any committee, who may replace any absent or disqualified member at any meeting of such committee.  In the absence or disqualification of any member of such committee or committees, the member or members thereof present at any meeting and not disqualified from voting, whether or not he or

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they constitute a quorum, may unanimously appoint another member of the Board of Directors to act at the meeting in the place of any such absent or disqualified member.  Such committee or committees shall have such name or names and such limitations of authority as may be determined from time to time by resolution adopted by the Board of Directors.

Section 3.02.          Minutes.  Each committee of directors shall keep regular minutes of its proceedings and report the same to the Board of Directors when required.

Section 3.03.          Compensation.  Members of special or standing committees may be allowed compensation for attending committee meetings, if the Board of Directors shall so determine.

ARTICLE IV

NOTICE

Section 4.01.          Methods of Giving Notice.  Unless otherwise stated herein, whenever under the provisions of applicable statutes, the Certificate or these bylaws, notice is required to be given to any director, member of any committee or stockholder, such notice shall be given by electronic transmission or in writing, and delivered personally or mailed to such director, member or stockholder if in writing; provided that in the case of a director or a member of any committee such notice may also be given orally or by telephone or telegram.  If mailed, notice to a director, member of a committee or stockholder shall be deemed to be given when deposited in the United States mail first class in a sealed envelope, with postage thereon prepaid, addressed, in the case of a stockholder, to the stockholder at the stockholder’s address as it appears on the records of the corporation or, in the case of a director or a member of a committee, to such person at his business address.  If sent by electronic transmission, notice to a director, member of a committee or stockholder shall be deemed to be given when such electronic transmission is transmitted, in the case of a stockholder, to the stockholder’s .  If sent by telegraph, notice to a director or member of a committee shall be deemed to be given when the telegram, so addressed, is delivered to the telegraph company.

Section 4.02.          Written Waiver.  Whenever any notice is required to be given under the provisions of an applicable statute, the Certificate or these bylaws, a waiver thereof in writing, signed by the person or persons entitled to said notice, whether before or after the time stated therein, shall be deemed equivalent thereto.

ARTICLE V

OFFICERS

Section 5.01.          Officers. The officers of the corporation shall be a Chairman of the Board, a President, one or more Vice Presidents, any one or more of which may be designated Executive Vice President or Senior Vice President, a Secretary and a Treasurer.  The Board of Directors may appoint such other officers and agents, including Assistant Vice Presidents, Assistant Secretaries and Assistant Treasurers, in each case as the Board of Directors shall deem necessary, who shall hold their offices for such terms and shall exercise such powers and perform such duties as shall be determined by the Board.  Any two or more offices may be held by the same person.  The Chairman of the Board shall be elected from among the directors.  With the foregoing exceptions, none of the other officers need be a director, and none of the officers need be a stockholder of the corporation.

Section 5.02.          Election and Term of Office.  The officers of the corporation shall be elected annually by the Board of Directors at its first regular meeting held after the annual meeting of

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stockholders or as soon thereafter as conveniently possible.  Each officer shall hold office until his successor shall have been chosen and shall have qualified or until his death or the IPO Date of his resignation or removal, or until he shall cease to be a director in the case of the Chairman.

Section 5.03.          Removal and Resignation.  Any officer or agent elected or appointed by the Board of Directors may be removed without cause by the affirmative vote of a majority of the Board of Directors whenever, in its judgment, the best interests of the corporation shall be served thereby, but such removal shall be without prejudice to the contractual rights, if any, of the person so removed.  Any officer may resign at any time by giving written notice to the corporation. Any such resignation shall take effect at the date of the receipt of such notice or at any later time specified therein, and unless otherwise specified therein, the acceptance of such resignation shall not be necessary to make it effective.

Section 5.04.          Vacancies.  Any vacancy occurring in any office of the corporation by death, resignation, removal or otherwise, may be filled by the Board of Directors for the unexpired portion of the term.

Section 5.05.          Salaries.  The salaries of all officers and agents of the corporation shall be fixed by the Board of Directors or pursuant to its direction; and no officer shall be prevented from receiving such salary by reason of his also being a director.

Section 5.06.          Chairman of the Board.  The Chairman of the Board shall preside at all meetings of the Board of Directors and of the stockholders of the corporation.  The Chairman shall formulate and submit to the Board of Directors or the Executive Committee matters of general policy for the corporation and shall perform such other duties as usually appertain to the office or as may be prescribed by the Board of Directors or the Executive Committee.

Section 5.07.          President.  The President shall be the chief executive officer of the corporation and, subject to the control of the Board of Directors, shall in general supervise and control the business and affairs of the corporation.  In the absence of the Chairman of the Board, the President shall preside at all meetings of the Board of Directors and of the stockholders.  He may also preside at any such meeting attended by the Chairman if he is so designated by the Chairman.  He shall have the power to appoint and remove subordinate officers, agents and employees, except those elected or appointed by the Board of Directors. The President shall keep the Board of Directors and the Executive Committee fully informed and shall consult them concerning the business of the corporation.  He may sign with the Secretary or any other officer of the corporation thereunto authorized by the Board of Directors, certificates for shares of the corporation and any deeds, bonds, mortgages, contracts, checks, notes, drafts or other instruments that the Board of Directors has authorized to be executed, except in cases where the signing and execution thereof has been expressly delegated by these bylaws or by the Board of Directors to some other officer or agent of the corporation, or shall be required by law to be otherwise executed.  He shall vote, or give a proxy to any other officer of the corporation to vote, all shares of stock of any other corporation standing in the name of the corporation and in general he shall perform all other duties normally incident to the office of President and such other duties as may be prescribed by the stockholders, the Board of Directors or the Executive Committee from time to time.

Section 5.08.          Vice Presidents.  In the absence of the President, or in the event of his inability or refusal to act, the Executive Vice President (or in the event there shall be no Vice President designated Executive Vice President, any Vice President designated by the Board) shall perform the duties and exercise the powers of the President.  Any Vice President may sign, with the Secretary or Assistant Secretary, certificates for shares of the corporation.  The Vice Presidents shall perform such other duties as from time to time may be assigned to them by the President, the Board of Directors or the Executive Committee.

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Section 5.09.          Secretary.  The Secretary shall (a) keep the minutes of the meetings of the stockholders, the Board of Directors and committees of directors; (b) see that all notices are duly given in accordance with the provisions of these bylaws and as required by law; (c) be custodian of the corporate records and of the seal of the corporation, and see that the seal of the corporation or a facsimile thereof is affixed to all certificates for shares prior to the issue thereof and to all documents, the execution of which on behalf of the corporation under its seal is duly authorized in accordance with the provisions of these bylaws; (d) keep or cause to be kept a register of the post office address of each stockholder which shall be furnished by such stockholder; (e) sign with the President, or an Executive Vice President or Vice President, certificates for shares of the corporation, the issue of which shall have been authorized by resolution of the Board of Directors; (f) have general charge of the stock transfer books of the corporation; and (g) in general, perform all duties normally incident to the office of Secretary and such other duties as from time to time may be assigned to him by the President, the Board of Directors or the Executive Committee.

Section 5.10.          Treasurer.  If required by the Board of Directors, the Treasurer shall give a bond for the faithful discharge of his duties in such sum and with such surety or sureties as the Board of Directors shall determine.  He shall (a) have charge and custody of and be responsible for all funds and securities of the corporation; (b) receive and give receipts for moneys due and payable to the corporation from any source whatsoever and deposit all such moneys in the name of the corporation in such banks, trust companies or other depositories as shall be selected in accordance with the provisions of Section 6.03 of these bylaws; (c) prepare, or cause to be prepared, for submission at each regular meeting of the Board of Directors, at each annual meeting of the stockholders, and at such other times as may be required by the Board of Directors, the President or the Executive Committee, a statement of financial condition of the corporation in such detail as may be required; and (d) in general, perform all the duties incident to the office of Treasurer and such other duties as from time to time may be assigned to him by the President, the Board of Directors or the Executive Committee.

Section 5.11.          Assistant Secretary and Treasurer.  The Assistant Secretaries and Assistant Treasurers shall, in general, perform such duties as shall be assigned to them by the Secretary or the Treasurer, respectively, or by the President, the Board of Directors or the Executive Committee.  The Assistant Secretaries and Assistant Treasurers shall, in the absence of the Secretary or Treasurer, respectively, perform all functions and duties which such absent officers may delegate, but such delegation shall not relieve the absent officer from the responsibilities and liabilities of his office.  The Assistant Secretaries may sign, with the President or a Vice President, certificates for shares of the corporation, the issue of which shall have been authorized by a resolution of the Board of Directors.  The Assistant Treasurers shall respectively, if required by the Board of Directors, give bonds for the faithful discharge of their duties in such sums and with such sureties as the Board of Directors shall determine.

ARTICLE VI

CONTRACTS, CHECKS AND DEPOSITS

Section 6.01.          Contracts.  The Board of Directors may authorize any officer, officers, agent or agents, to enter into any contract or execute and deliver any instrument in the name of and on behalf of the corporation, and such authority may be general or confined to specific instances.

Section 6.02.          Checks.  All checks, demands, drafts or other orders for the payment of money, notes or other evidences of indebtedness issued in the name of the corporation, shall be signed by such officer or officers or such agent or agents of the corporation, and in such manner, as shall be determined by the Board of Directors.

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Section 6.03.          Deposits.  All funds of the corporation not otherwise employed shall be deposited from time to time to the credit of the corporation in such banks, trust companies or other depositories as the Board of Directors may select.

ARTICLE VII

CERTIFICATES OF STOCK

Section 7.01.          Issuance.  The shares of the corporation shall be represented by certificates, provided that the Board of Directors may provide by resolution or resolutions that some or all of any class or series of its stock shall be uncertificated shares; provided, however, that no such resolution shall apply to shares represented by a certificate until such certificate is surrendered to the corporation. Every holder of stock of the corporation represented by certificates shall be entitled to have a certificate, in such form as may be prescribed by law and by the Board of Directors, certifying the number and class of shares owned by him in the corporation.  Each such certificate shall be signed by, or in the name of the corporation by, the President or a Vice President and the Secretary or an Assistant Secretary.  Any or all of the signatures on the certificate may be a facsimile.  If the corporation shall be authorized to issue more than one class of stock or more than one series of any class, the designations, preferences and relative participating, optional or other special rights of each class of stock or series thereof and the qualifications, limitations or restrictions of such preferences and rights shall be set forth in full or summarized on the face or back of the certificate which the corporation shall issue to represent such class of stock; provided that, except as otherwise provided by statute, in lieu of the foregoing requirements there may be set forth on the face or back of the certificate which the corporation shall issue to represent such class or series of stock, a statement that the corporation will furnish to each stockholder who so requests the designations, preferences and relative, participating, optional or other special rights of each class of stock or series thereof and the qualifications, limitations or restrictions of such preferences and rights.  All certificates surrendered to the corporation for transfer shall be canceled and no new certificate shall be issued until the former certificate for a like number of shares shall have been surrendered and canceled, except that in the case of a lost, stolen, destroyed or mutilated certificate a new one may be issued therefor upon such terms and with such indemnity, if any, to the corporation as the Board of Directors may prescribe.  Certificates shall not be issued representing fractional shares of stock.

Section 7.02.          Lost Certificates.  The corporation may issue a new certificate of stock in place of any previously issued certificate alleged to have been lost, stolen, or destroyed, or it may issue uncertificated shares if the shares represented by such certificate have been designated as uncertificated shares in accordance with Section 7.02, upon such terms and conditions as the Board of Directors may prescribe, including the presentation of reasonable evidence of such loss, theft or destruction and the giving of such indemnity as the Board of Directors may require for the protection of the corporation or any transfer agent or registrar.

Section 7.03.          Transfers.  Except as otherwise established by rules and regulations adopted by the Board of Directors, and subject to applicable law, shares of stock may be transferred on the books of the corporation: (i) in the case of shares represented by a certificate, by the surrender to the corporation or its transfer agent of the certificate representing such shares properly endorsed or accompanied by a written assignment or power of attorney properly executed, and with such proof of authority or authenticity of signature as the corporation or its transfer agent may reasonably require; and (ii) in the case of uncertificated shares, upon the receipt of proper transfer instructions from the registered owner thereof.  Except as may be otherwise required by law, the Certificate of Incorporation or the Bylaws, the corporation shall be entitled to treat the record holder of stock as shown on its books as the owner of such stock for all purposes, including the payment of dividends and the right to vote with respect to such stock, regardless of any transfer, pledge or other disposition of such stock until the shares

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have been transferred on the books of the corporation in accordance with the requirements of these Bylaws.

Section 7.04.          Registered Stockholders.  The corporation shall be entitled to treat the holder of record of any share or shares of the corporation’s capital stock as the holder in fact thereof and, accordingly, shall not be bound to recognize any equitable or other claim to or interest in such share or shares on the part of any other person, whether or not it shall have express or other notice thereof, except as otherwise provided by the laws of the State of Delaware.

ARTICLE VIII

DIVIDENDS

Section 8.01.          Declaration.  Dividends with respect to the shares of the corporation’s capital stock, subject to the provisions of the Certificate, if any, may be declared by the Board of Directors at any regular or special meeting, pursuant to applicable law.  Dividends may be paid in cash, in property or in shares of capital stock, subject to the provisions of the Certificate.

Section 8.02.          Reserve.  Before payment of any dividend, there may be set aside out of any funds of the corporation available for dividends such sum or sums as the Board of Directors from time to time, in their absolute discretion, think proper as a reserve or reserves to meet contingencies, or for equalizing dividends, or for repairing or maintaining any property of the corporation, or for such other purpose as the Board of Directors shall think conducive to the interest of the corporation, and the Board of Directors may modify or abolish any such reserve in the manner in which it was created.

ARTICLE IX

INDEMNIFICATION

Section 9.01.          Third Party Actions.  The corporation shall indemnify any director or officer of the corporation, and may indemnify any other person, who was or is a party or is threatened to be made a party to any threatened, pending or completed action, suit or proceeding, whether civil, criminal, administrative or investigative (other than an action by or in the right of the corporation) by reason of the fact that he is or was a director, officer, employee or agent of the corporation, or is or was serving at the request of the corporation as a director, officer, employee or agent of another corporation, partnership, joint venture, trust or other enterprise, against expenses (including attorneys’ fees), judgments, fines and amounts paid in settlement actually and reasonably incurred by him in connection with such action, suit or proceeding if he acted in good faith and in a manner he reasonably believed to be in or not opposed to the best interests of the corporation, and, with respect to any criminal action or proceeding, had no reasonable cause to believe his conduct was unlawful.  The termination of any action, suit or proceeding by judgment, order, settlement or conviction, or upon a plea of nolo contendere or its equivalent, shall not, of itself, create a presumption that the person did not act in good faith and in a manner which he reasonably believed to be in or not opposed to the best interests of the corporation, and, with respect to any criminal action or proceeding, had reasonable cause to believe that his conduct was unlawful.

Section 9.02.          Actions by or in the Right of the Corporation.  The corporation shall indemnify any director or officer and may indemnify any other person who was or is a party or is threatened to be made a party to any threatened, pending or completed action or suit by or in the right of the corporation to procure a judgment in its favor by reason of the fact that he is or was a director, officer, employee or agent of the corporation, or is or was serving at the request of the corporation as a director,

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officer, employee or agent of another corporation, partnership, joint venture, trust or other enterprise against expenses (including attorneys’ fees) actually and reasonably incurred by him in connection with the defense or settlement of such action or suit if he acted in good faith and in a manner he reasonably believed to be in or not opposed to the best interests of the corporation and except that no indemnification shall be made in respect of any claim, issue or matter as to which such person shall have been adjudged to be liable to the corporation unless and only to the extent that the Court of Chancery or the court in which such action or suit was brought shall determine upon application that, despite the adjudication of liability but in view of all the circumstances of the case, such person is fairly and reasonably entitled to indemnity for such expenses as the Court of Chancery or such other court shall deem proper.

Section 9.03.          Determination of Conduct.  The determination that a director, officer, employee or agent has met the applicable standard of conduct set forth in Sections 9.01 and 9.02 (unless indemnification is ordered by a court) shall be made (1) by the Board of Directors by a majority vote of a quorum consisting of directors who were not parties to such action, suit or proceeding, or (2) if such quorum is not obtainable, or, even if obtainable a quorum of disinterested directors so directs, by independent legal counsel in a written opinion, or (3) by the stockholders.

Section 9.04.          Payment of Expenses in Advance.  Expenses incurred in defending a civil or criminal action, suit or proceeding shall be paid by the corporation in advance of the final disposition of such action, suit or proceeding upon receipt of an undertaking by or on behalf of the director, officer, employee or agent to repay such amount if it shall ultimately be determined that he is not entitled to be indemnified by the corporation as authorized in this Article IX.

Section 9.05.          Indemnity Not Exclusive.  The indemnification and advancement of expenses provided or granted hereunder shall not be deemed exclusive of any other rights to which those seeking indemnification or advancement of expenses may be entitled under the Certificate, any other bylaw, agreement, vote of stockholders or disinterested directors or otherwise, both as to action in his official capacity and as to action in another capacity while holding such office.

Section 9.06.          Definitions.  For purposes of this Article IX:

(a)           “the corporation” shall include, in addition to the resulting corporation, any constituent corporation (including any constituent of a constituent) absorbed in a consolidation or merger that, if its separate existence had continued, would have had power and authority to indemnify its directors, officers and employees or agents, so that any person who is or was a director, officer, employee or agent of such constituent corporation, or is or was serving at the request of such constituent corporation as a director, officer, employee or agent of another corporation, partnership, joint venture, trust or other enterprise, shall stand in the same position under this Article IX with respect to the resulting or surviving corporation as he would have with respect to such constituent corporation if its separate existence had continued;

(b)           “other enterprises” shall include employee benefit plans;

(c)           “fines” shall include any excise taxes assessed on a person with respect to any employee benefit plan;

(d)           “serving at the request of the corporation” shall include any service as a director, officer, employee or agent of the corporation that imposes duties on, or involves services by, such director, officer, employee or agent with respect to an employee benefit plan, its participants or beneficiaries; and

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(e)           a person who acted in good faith and in a manner he reasonably believed to be in the interest of the participants and beneficiaries of an employee benefit plan shall be deemed to have acted in a manner “not opposed to the best interests of the corporation” as referred to in this Article IX.

Section 9.07.          Continuation of Indemnity.  The indemnification and advancement of expenses provided or granted hereunder shall, unless otherwise provided when authorized or ratified, continue as to a person who has ceased to be a director, officer, employee or agent and shall inure to the benefit of the heirs, executors and administrators of such a person.

ARTICLE X

MISCELLANEOUS

Section 10.01.        Seal.  The corporate seal, if one is authorized by the Board of Directors, shall have inscribed thereon the name of the corporation, and the words “Corporate Seal, Delaware.”  The seal may be used by causing it or a facsimile thereof to be impressed or affixed or otherwise reproduced.

Section 10.02.        Books.  The books of the corporation may be kept (subject to any provision contained in the statutes) outside the State of Delaware at the offices of the corporation, or at such other place or places as may be designated from time to time by the Board of Directors.

ARTICLE XI

AMENDMENT

Except as otherwise required by the Certificate, these bylaws may be altered, amended or repealed by a majority of the number of directors then constituting the Board of Directors at any regular meeting of the Board of Directors without prior notice, or at any special meeting of the Board of Directors if notice of such alteration, amendment or repeal be contained in the notice of such special meeting.

[The remainder of this page intentionally left blank.]

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SECRETARY’S CERTIFICATE OF ADOPTION OF

THE AMENDED AND RESTATED BYLAWS OF

PROS HOLDINGS, INC.

I hereby certify:

That I am the duly elected Secretary of PROS Holdings, Inc., a Delaware corporation;

That the foregoing Amended and Restated Bylaws constitute the Bylaws of said corporation as duly adopted by the Board of Directors of the Corporation on August 21, 2008.

IN WITNESS WHEREOF, I have hereunder subscribed my name this 21 day of August, 2008.

/s/ Charles Murphy

Charles H. Murphy

Secretary

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EX-99.1

Exhibit 99.1

FOR IMMEDIATE RELEASE

PROS Expands Board with New Independent Director

Houston, Texas — August 25, 2008 — PROS Holdings, Inc. (NYSE: PRO), a leading provider of pricing and revenue optimization science and software, announced today that Mrs. Ellen Keszler has joined its board of directors, effective August 21, 2008.  Mrs. Keszler will also serve as a member of the Audit and the Nominating and Governance Committees.  With the addition of our newest director, PROS’ Board has been expanded to eight directors, five of whom are independent.

“We are pleased to welcome Ellen as our newest independent director on PROS’ Board,” said Bert Winemiller, Chairman of the PROS Board of Directors and Chief Executive Officer.  “Ellen’s leadership experience as a technology company executive and her wealth of financial experience, will add significant value to the PROS Board of Directors and to our stockholders in her role as independent director.”

Mrs. Keszler, currently, serves as President and Chief Executive Officer of Clear Sky Associates, a management and strategy consulting firm focused on the technology and travel industries.  Previously, Mrs. Keszler served as President of Travelocity Business from 2003 to 2007; a technology focused corporate travel management company.  From 2000 to 2003, Mrs. Keszler served as Senior Vice President - North American Division of Sabre Travel Network, a travel technology and services business.  From 1987 to 2000, Mrs. Keszler held various finance roles at Sabre Holdings, American Airlines and JCPenney.  These functions included financial planning, strategic analysis, treasury, mergers and acquisitions, and financial operations.  Mrs. Keszler holds an MBA from the University of Texas at Austin and a BS degree in Civil Engineering from Texas A&M University.

About PROS

PROS Holdings, Inc. (NYSE: PRO) is a leading provider of pricing and revenue optimization software products, specializing in price analytics, price execution and price optimization. By using our software products, our customers gain insight into their pricing strategies, identify detrimental pricing practices, optimize their pricing decision-making and improve their business processes and financial performance. PROS’ software products incorporate advanced pricing science, which includes operations research, forecasting and statistics. PROS’ high performance software architecture supports real-time high volume transaction processing and allows PROS to handle the processing and database requirements of the most sophisticated and largest customers, including customers with hundreds of simultaneous users and sub-second electronic transactions. PROS provides professional services to configure our software products to meet the specific pricing needs of each customer. PROS has implemented over 200 solutions across a range of industries in more than 40 countries. Founded in 1985, PROS is headquartered in Houston, Texas. Today, PROS has over 300 employees, more than 100 with advanced degrees and 20 with Ph.D.s.

Forward-looking Statements

This press release contains forward-looking statements, including statements about the functionality of the PROS products and their ability to manage and forecast across an enterprise. The forward-looking statement contained in this press release are based upon PROS historical performance and its current plans, estimates and expectations and are not a representation that such plans, estimates or expectations will be achieved. Factors that could cause actual results to differ materially from those described herein include PROS ability to develop new products and product enhancements with the required functionality desired and PROS ability to implement and support successfully its products to the expectations of its customers. Additional information relating to the uncertainty affecting the PROS business are contained in PROS filings with the Securities and Exchange Commission. These forward-looking statements represent PROS expectations as of the date of this press release. Subsequent events may cause these expectations to change, and PROS disclaims any obligations to update or alter these forward-looking statements in the future, whether as a result of new information, future events or otherwise.

Media Relations:

PROS Corporate Communications

CorpComm@prospricing.com

(713) 335-5197

Investor Relations:

PROS Holdings, Inc.

IR@prospricing.com

(713) 335-5879

EX-99.2

Exhibit 99.2

FOR IMMEDIATE RELEASE

PROS Holdings, Inc. Announces Stock Repurchase Program

Houston, Texas – August 25, 2008 — PROS Holdings, Inc. (NYSE: PRO), a leading provider of pricing and revenue optimization science and software, today announced that its Board of Directors has authorized a stock repurchase program for up to $15 million of its common stock. The Company intends to use available cash to effect any stock repurchases. As of June 30, 2008, the Company had approximately 26.6 million shares of fully diluted common stock outstanding and $48.8 million in cash and cash equivalents.

“The decision to implement a stock repurchase program reflects the confidence of both our board of directors and management in the company’s value proposition,” said Bert Winemiller, Chairman and CEO. “We believe that the purchase of our own shares is a solid investment in the company and will add to shareholder value.”

Under the board-approved repurchase program, share purchases may be made from time to time in the open market or through privately negotiated transactions depending on market conditions, share price, trading volume and other factors, and such purchases, if any, will be made in accordance with applicable insider trading and other securities laws and regulations. These repurchases may be commenced or suspended at any time or from time to time without prior notice.

About PROS

PROS Holdings, Inc. (NYSE: PRO) is a leading provider of pricing and revenue optimization software products, specializing in price analytics, price execution and price optimization. By using our software products, our customers gain insight into their pricing strategies, identify detrimental pricing practices, optimize their pricing decision-making and improve their business processes and financial performance. PROS’ software products incorporate advanced pricing science, which includes operations research, forecasting and statistics. PROS’ high performance software architecture supports real-time high volume transaction processing and allows PROS to handle the processing and database requirements of the most sophisticated and largest customers, including customers with hundreds of simultaneous users and sub-second electronic transactions. PROS provides professional services to configure our software products to meet the specific pricing needs of each customer. PROS has implemented over 200 solutions across a range of industries in more than 40 countries. Founded in 1985, PROS is headquartered in Houston, Texas. Today, PROS has over 300 employees, more than 100 with advanced degrees and 20 with Ph.D.s.

Forward-looking Statements

This news release may include forward-looking statements. Forward-looking statements are statements regarding future events or the future performance of PROS, and include statements regarding PROS’ proposed stock repurchase program and the anticipated benefits such program will provide to PROS and its stockholders. These forward-looking statements are based on current expectations, forecasts and assumptions and involve a number of risks and uncertainties that could cause actual results to differ materially from those anticipated by these forward-looking statements. These risks include: uncertainties regarding the price per share PROS may repurchase its common stock under the proposed stock repurchase program, price and volume fluctuations in PROS’ common stock and the stock markets generally. Additional information relating to the uncertainty affecting the PROS business are contained in PROS filings with the Securities and Exchange Commission. These forward-looking statements represent PROS expectations as of the date of this press release. Subsequent events may cause these expectations to change, and PROS disclaims any obligations to update or alter these forward-looking statements in the future, whether as a result of new information, future events or otherwise.

###

Media Relations:

PROS Corporate Communications

CorpComm@prospricing.com

(713) 335-5197

Investor Relations:

PROS Holdings, Inc.

IR@prospricing.com

(713) 335-5879