Sec Form 4 Filing - Alemany Ellen R @ Dun & Bradstreet Holdings, Inc. - 2025-08-26

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 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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1. Name and Address of Reporting Person Alemany Ellen R 2. Issuer Name and Ticker or Trading Symbol Dun & Bradstreet Holdings, Inc. [ DNB] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 5335 GATE PARKWAY 3. Date of Earliest Transaction (MM/DD/YY) 08/26/2025 (Street) JACKSONVILLE, FL32256 4. If Amendment, Date Original Filed (MM/DD/YY) 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 (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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 08/26/2025 D( 1 ) 64,359 ( 2 ) D 0 D Common Stock 08/26/2025 D( 1 ) 5,790 ( 2 ) D 0 I Alemany March 2024 GRAT No 3

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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 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

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Alemany Ellen R 5335 GATE PARKWAY JACKSONVILLE, FL32256 X Signatures /s/ Colleen E. Haley, Attorney-in-Fact 08/26/2025 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Pursuant to that certain Agreement and Plan of Merger (as amended from time to time, the "Merger Agreement") dated as of March 23, 2025 by and among the Issuer, Denali Intermediate Holdings, Inc., ("Parent"), and Denali Buyer, Inc., a direct wholly owned subsidiary of Parent ("Merger Sub"), Merger Sub merged with and into the Issuer (the "Merger"), with the Issuer surviving the Merger as a wholly owned subsidiary of Parent. ( 2 )Amount adjusted to reflect a transfer from the reporting person's grantor retained annuity trust to the reporting person's direct holdings. ( 3 )Pursuant to the Merger Agreement, among other things, (i) each outstanding share of the common stock of the Issuer was cancelled and converted into the right to receive $9.15 in cash per share without interest and subject to deduction for any applicable withholding taxes (the "Merger Consideration") and (ii) each outstanding restricted stock award subject to time-based or performance-based vesting conditions, whether vested or unvested, held by a member of the board of directors of the Issuer (other than the Chief Executive Officer), was converted into the right to receive the Merger Consideration plus all accumulated but unpaid dividend equivalent rights with respect to such shares.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* 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).

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