144 0001718537 XXXXXXXX LIVE 0001799208 Dun & Bradstreet Holdings, Inc. 001-39361 5335 Gate Parkway Jacksonville FL 32256 (904) 648-6350 Thomas H. Lee Equity Fund VIII, L.P. 10% Owner Common Stock JP Morgan Securities LLC

383 Madison Avenue New York NY 10179

3136529 35411412.41 439226023 08/07/2023 NYSE Common Stock, $0.0001 par value 02/15/2022 Shares acquired as partial consideration from Black Knight, Inc. in exchange for equity interests of Optimal Blue Holdco, LLC See "Nature of Acquisition Transaction" N 3136529 02/15/2022 See "Nature of Acquisition Transaction" Y 08/07/2023 /s/ Michael McDonnell, Chief Financial Officer, Management Company