SCHEDULE 13D/A

DUN & BRADSTREET HLDGS INC

Common Stock, par value $0.0001 · CUSIP: 26484T106

Event date: 2025-03-23

Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.

Filing-level shares

Unavailable

Percent of class

Unavailable

• THOMAS H. LEE ADVISORS, LLCReported CIK 0001260943

  Shares: 22,525,103 · Class: 5.1%

• Thomas H. Lee Equity Fund VIII, L.P.

  Shares: 6,142,612 · Class: 1.4%

• Thomas H. Lee Parallel Fund VIII, L.P.

  Shares: 11,184,899 · Class: 2.5%

• THL Executive Fund VIII, L.P.

  Shares: 468,969 · Class: 0.1%

• THL Equity Advisors VIII, LLC

  Shares: 22,525,103 · Class: 5.1%

• Thomas H. Lee Partners, L.P.

  Shares: 22,525,103 · Class: 5.1%

• THL Managers VIII, LLC

  Shares: 22,583,313 · Class: 5.1%

• THL Holdco, LLC

  Shares: 22,525,103 · Class: 5.1%

• THL Fund VIII Coinvestment Partners, L.P.

  Shares: 730,006 · Class: 0.2%

• THL Equity Fund VIII Investors (D&B), L.P.

  Shares: 3,998,617 · Class: 0.9%

Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.