Statement of Changes in Beneficial Ownership (Form 4)

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b). Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

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 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 * Cook Scott William 2. Issuer Name and Ticker or Trading Symbol PROS Holdings, Inc. [PRO] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Sr.VP,Chief Accounting Officer (Last) (First) (Middle) 3200 KIRBY DR., SUITE 600 3. Date of Earliest Transaction (Month/Day/Year) 09/02/2025 (Street) HOUSTON 77098 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 09/02/2025(1) M 608 A $15.28(2) 66,997 D Common Stock 09/02/2025(1) F 240 D $15.28(2) 66,757 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

Restricted Stock Units

(3)

09/02/2025(1)

M

608

(4)

(4)

Common Stock

608

$ 0

102,816(5)

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Cook Scott William 3200 KIRBY DR., SUITE 600 HOUSTON 77098			Sr.VP,Chief Accounting Officer

Signatures

Chris Chaffin, attorney-in-fact for Scott William Cook		09/03/2025
**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 actual vest date occurred on Monday, September 1, 2025 (Labor Day) and therefore the transaction occurred on the first business day thereafter.
(2)	The price represents the price of PROS Holdings, Inc. ("PROS") common stock at the close of market on September 2, 2025.
(3)	Each restricted stock unit ("RSU") represents the contingent right to receive one share of PROS common stock.
(4)	This is the eleventh tranche of an award granted on March 1, 2022, in the amount of 9,718 RSUs.
(5)	Includes: (i) 2,528 unvested RSUs awarded 1/10/22 - vests at 25% after 1-year on the anniversary date and the remainder vesting at 6.25% on the 10th day of the 1st month of each quarter thereafter; (ii) 1,216 unvested RSUs awarded 3/1/22 vests at 25% after 1- year on the anniversary date and the remainder vesting at6.25% after the completion of each 3-month calendar period thereafter;(iii) 13,890 unvested RSUs awarded 1/12/23 - vests at 25% after 1-year on the anniversary date and the remainder vesting at the rate of 6.25% on the 12th day of the 1st month of each quarter thereafter;(iv) 17,767 unvested RSUs awarded 1/12/24 - vests at 25% after 1-year on the anniversary date and the remainder vesting at the rate of 6.25% on the 12th day of the 1st month of each quarter thereafter; and (v) 67,415 unvested RSUs awarded 1/15/25 - vests at 25% after 1-year on the anniversary date and the remainder vesting at the rate of6.25% on the 15th day of the 1st month of each quarter thereafter.

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