NEW YORK–(BUSINESS WIRE)–Rosen Law Firm, a global investor rights law firm, announces a class action lawsuit on behalf of all persons or entities that: (a) sold shares of Dun & Bradstreet Holdings, Inc. (NYSE: DNB) (“D&B”) common stock in the open market from May 13, 2025 through August 26, 2025; (b) exchanged shares of D&B common stock into the August 26, 2025 merger of D&B with affiliates of Clearlake Capital Group, L.P. for $9.15 per share in cash (the “Merger”); and/or (c)