X0508 4 2025-05-08 0001799208 Dun & Bradstreet Holdings, Inc. DNB 0001306507 Chu Chinh 5335 GATE PARKWAY JACKSONVILLE FL 32256 1 0 Common Stock 2025-05-09 4 S 0 19139.0000 8.9500 D 71276.0000 D Common Stock 2025-05-09 4 S 0 47466.0000 8.9650 D 23810.0000 D Common Stock 2025-05-08 4 S 0 10885403.0000 8.9500 D 0.0000 I By CC Star Holdings, LP. This transaction was executed in multiple sales at prices ranging from $8.96 to $8.97. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the shares sold at each separate price. /s/ Colleen E. Haley, Attorney-in-Fact 2025-05-12