Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
Reiner Andres
  2. Issuer Name and Ticker or Trading Symbol
PROS Holdings, Inc. [PRO]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
President & CEO
(Last)
(First)
(Middle)
3100 MAIN STREET, SUITE 900
3. Date of Earliest Transaction (Month/Day/Year)
06/05/2018
(Street)

HOUSTON, TX 77002
4. If Amendment, Date Original Filed(Month/Day/Year)
6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)
7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 06/05/2018(1)   M   50,000 A $ 35.66 505,074 D  
Common Stock 06/05/2018(1)   F   19,675 D $ 35.66 485,399 D  

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)
6. Date Exercisable and Expiration Date
(Month/Day/Year)
7. Title and Amount of Underlying Securities
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)
10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)
11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Performance Share Units (2) 06/05/2018   M     50,000   (3)   (3) Common Stock 50,000 $ 0 100,000 (4) D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Reiner Andres
3100 MAIN STREET
SUITE 900
HOUSTON, TX 77002
  X     President & CEO  

Signatures

 Damian Olthoff, attorney-in-fact for Andres D. Reiner   06/07/2018
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) The award criteria for these performance restricted stock units ("PRSUs") was met on May 29, 2018. On June 5, 2018, the Compensation and Leadership Development Committee of the Board of Directors of PROS Holdings, Inc. ("Company") approved the vesting of such shares to be issued.
(2) One share of the Company's common stock was issued for each performance share that vested.
(3) This is the second tranche of this PRSU award, granted on September 9, 2016 in the total amount of 200,000 PRSUs under the Company's 2007 Equity Incentive Plan. This grant is eligible for vesting based on the average trailing closing price per share of the Company's common stock meeting certain minimum performance hurdles for at least 105 calendar days prior to September 9, 2020, with 25% vesting at $27, 25% vesting at $33, and the remaining 50% vesting at $41.
(4) Includes PRSUs that were granted on September 9, 2016 in the total amount of 200,000 PRSUs under the Company's 2007 Equity Incentive Plan. The remainder are eligible to vest in one tranche if the performance hurdle is met prior to September 9, 2020.

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