.016570| 003590|127C|RESTRICTED||4|057-423 NNNNN COMMON STOCK
  COMMON STOCK PAR VALUE $.001 THIS CERTIFICATE IS TRANSFERABLE IN CANTON, MA AND
  JERSEY CITY, NJ Certificate Shares Number * *600620****** * **600620***** ZQ
  000000 ****600620****PROS HOLDINGS, INC.*****600620*********600620**
  INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE ** Mr. Alexander David
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  **** Mr. Alexander David Sample **** Mr. Alexander David THIS CERTIFIES THAT
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  DEFINITIONS MR. SAMPLE & MRS. SAMPLE Alexander David Sample **** Mr.
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  **600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600
  is the owner of ***SIX HUNDRED THOUSAND
  620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares***600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**
  SIX HUNDRED AND TWENTY*** Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Sh
  FULLY-PAID AND NON-ASSESSABLE SHARES OF THE COMMON STOCK OF PROS Holdings,
  Inc. (hereinafter called the “Company”), transferable on the books of the
  Company in person or by duly authorized attorney, upon surrender of this
  Certificate properly endorsed. This Certificate and the shares represented
  hereby, are issued and shall be held subject to all of the provisions of the
  Articles of Incorporation, as amended, and the By-Laws, as amended, of the
  Company (copies of which are on file with theCompany and with the Transfer
  Agent), to all of which each holder, by acceptance hereof, assents.
  ThisCertificate is not valid unless countersigned and registered by the
  Transfer Agent and Registrar. Witness the facsimile seal of the Company and
  the facsimile signatures of its duly authorized officers. DATED <<Month
  Day, Year>> COUNTERSIGNED AND REGISTERED: /s/ Charles H. Murphy
  COMPUTERSHARE TRUST COMPANY, N.A. TRANSFER AGENT AND REGISTRAR, President /s/
  Albert Winemiller By Secretary AUTHORIZED SIGNATURE PO BOX 43004, Providence,
  RI 02940-3004 MR A_SAMPLE_DESIGNATION (IF ANY) ADD 1ADD 2 ADD 3 ADD 4 CUSIP
  XXXXXX XX X Holder ID XXXXXXXXXX Insurance Value 1,000,000.00 Number of
  Shares 123456 DTC 12345678 123456789012345 Certificate Numbers Num/No. Denom.
  Total 1234567890/1234567890 1 1 1 1234567890/1234567890 2 2 2
  1234567890/1234567890 3 3 3 1234567890/1234567890 4 4 4 1234567890/1234567890
  5 5 5 1234567890/1234567890 6 6 6 Total Transaction 7 

   

  














	
  

  	
   PROS HOLDINGS, INC. THE COMPANY WILL FURNISH
  WITHOUT CHARGE TO EACH SHAREHOLDER WHO SO REQUESTS, A SUMMARY OF THE POWERS,
  DESIGNATIONS, PREFERENCES AND RELATIVE, PARTICIPATING, OPTIONAL OR OTHER
  SPECIAL RIGHTS OF EACH CLASS OF STOCK OF THE COMPANYAND THE QUALIFICATIONS,
  LIMITATIONS OR RESTRICTIONS OF SUCH PREFERENCES AND RIGHTS, AND THE
  VARIATIONS IN RIGHTS, PREFERENCES AND LIMITATIONS DETERMINED FOR EACH SERIES,
  WHICH ARE FIXED BY THE ARTICLES OF INCORPORATION OF THE COMPANY, AS AMENDED,
  AND THE RESOLUTIONS OF THE BOARD OF DIRECTORS OF THE COMPANY, AND THE
  AUTHORITY OF THE BOARD OF DIRECTORS TO DETERMINE VARIATIONS FOR FUTURE
  SERIES. SUCH REQUEST MAY BE MADE TO THE OFFICE OF THE SECRETARY OF THE
  COMPANY OR TO THE TRANSFER AGENT. THE BOARD OF DIRECTORS MAY REQUIRE THE
  OWNER OF A LOST OR DESTROYED STOCK CERTIFICATE, OR HIS LEGAL REPRESENTATIVES,
  TO GIVE THE COMPANY A BOND TO INDEMNIFY IT AND ITS TRANSFER AGENTS AND
  REGISTRARS AGAINST ANY CLAIM THAT MAY BE MADE AGAINST THEM ON ACCOUNT OF THE
  ALLEGED LOSS OR DESTRUCTION OF ANY SUCH CERTIFICATE. The following
  abbreviations, when used in the inscription on the face of this certificate,
  shall be construed as though they were written out in full according to
  applicable laws or regulations: TEN COM -as tenants in common UNIF GIFT MIN
  ACT ­ Custodian (Cust) (Minor) TEN ENT -as tenants by the entireties under
  Uniform Giftsto Minors Act (State) JT TEN -as joint tenants with right of
  survivorship UNIF TRF MIN ACT. Custodian (until age. . . ). and not as
  tenants in common (Cust) (Minor) under Uniform Transfers to Minors Act.
  (State) Additional abbreviations may also be used though not in the above
  list. PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE
  For value received,____________hereby sell, assign and transfer unto (PLEASE
  PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING POSTAL ZIP CODE, OF ASSIGNEE)
  Shares of the common stock represented by the within Certificate, and do
  hereby irrevocably constitute and appoint Attorney to transfer the said stock
  on the books of the within-named Company with full power of substitution in
  the premises. Dated: ________20 Signature(s) Guaranteed: Medallion Guarantee
  Stamp THE SIGNATURE(S) SHOULD BE GUARANTEED BYAN ELIGIBLE GUARANTOR
  INSTITUTION (Banks, Stockbrokers, Savings and Loan Associations and Credit
  Unions) WITH MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM,
  PURSUANT TO S.E.C. RULE 17Ad-15. Signature:___________
  Signature:______________ Notice: The signature to this assignment must
  correspond with the name as written upon the face of the certificate, in
  every particular, without alteration or enlargement, or any change whatever.