UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13G

Under the Securities Exchange Act of 1934

(Amendment No. 1)

DUN & BRADSTREET HOLDINGS, INC.

(Name of Issuer)

Common Stock, par value $0.0001 per share

(Title of Class of Securities)

26484T106

(CUSIP Number)

December 31, 2021

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

☐ Rule 13d-1(b)

☐ Rule 13d-1(c)

☒ Rule 13d-1(d)

The information required in the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

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Dun & Bradstreet Holdings, Inc. (“Issuer”)

101 JFK Parkway

Short Hills, NJ 07078

This statement is being filed on behalf of Cannae Holdings, Inc. (“Cannae”), Cannae Holdings, LLC (“CHL”) and DNB Holdco, LLC (“DNB Holdco) (collectively, the “Reporting Persons”). DNB Holdco is a wholly-owned subsidiary of CHL, which, in turn, is a wholly-owned subsidiary of Cannae.

An agreement among the Reporting Persons on behalf of which this Schedule 13G/A is filed was previously filed as an exhibit to the original Schedule 13G filing.

The principal business office of each Reporting Person is:

1701 Village Center Circle

Las Vegas, NV 89134

Cannae is a Delaware corporation. CHL and DNB Holdco are Delaware limited liability companies.

Common Stock, par value $0.0001 per share (“Common Stock”), of the Issuer

(a)-(c) The responses of the Reporting Persons to Rows 5, 6, 7, 8, 9 and 11 in each of their respective cover pages which relate to the beneficial ownership of the Common Stock of the Issuer, as of December 31, 2021, are incorporated herein by reference. As of December 31, 2021, Cannae beneficially owned an aggregate of 68,052,330 shares of Common Stock (which includes all of the shares of Common Stock owned by DNB Holdco and its wholly-owned subsidiary), representing

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approximately 15.8% of the shares of Common Stock outstanding (431,189,078 shares of Common Stock outstanding as of October 31, 2021, as reported in the Issuer’s Quarterly Report on Form 10-Q for the period ended September 30, 2021, filed with the Securities and Exchange Commission on November 4, 2021).

Due to that certain letter agreement, dated as of June 30, 2020, by and among DNB Holdco, LLC, certain entities affiliated with Thomas H. Lee Partners, L.P., CC Star Holdings, LP, Bilcar, LLC and Black Knight Infoserv, LLC (collectively, the “Letter Agreement Parties”), the Letter Agreement Parties may be deemed to constitute a “group”, within the meaning of Section 13(d)(3) of the Exchange Act that beneficially owns, in the aggregate, 199,247,900 shares representing 45.8% of outstanding Common Stock based on the information concerning beneficial ownership provided to DNB Holdco by each of the other Letter Agreement Parties. It is the understanding of the DNB Holdco that each of the other Letter Agreement Parties will be filing a separate Schedule 13G pursuant to Rule 13d-1(k)(2). The Reporting Persons expressly disclaim beneficial ownership over any shares of Common Stock that they may be deemed to beneficially own solely by reason of the Letter Agreement. Except as disclosed herein, this Schedule 13G does not reflect any shares of Common Stock beneficially owned by the other Parties.

Not applicable.

The responses of the Reporting Persons to Items 2(a) and 4 are incorporated herein by reference.

Not applicable.

The responses of the Reporting Persons to Item 4 is incorporated herein by reference.

Not applicable.

Not applicable.

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Signature

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Dated: February 11, 2022

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EXHIBIT INDEX

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