X0206 3 2020-07-01 0 0001799208 Dun & Bradstreet Holdings, Inc. DNB 0001627014 Black Knight, Inc. 601 RIVERSIDE AVENUE JACKSONVILLE FL 32204 1 0 1 0 0001429775 Black Knight InfoServ, LLC 601 RIVERSIDE AVENUE JACKSONVILLE FL 32204 1 0 1 0 Common Stock 54849970 I See Footnote This report is filed by Black Knight, Inc. ("Black Knight"), Black Knight Financial Services, Inc. ("BKFS Inc."), Black Knight Financial Services, LLC ("BKFS LLC"), and Black Knight InfoServ, LLC ("InfoServ") (each, a "Reporting Person"). Black Knight is the sole stockholder of BKFS Inc., which in turn is the sole member of BKFS LLC, which in turn is the sole member of InfoServ. Solely for purposes of Section 16 of the Exchange Act, each Reporting Person may be deemed a "director by deputization". Represents shares held directly by InfoServ, and held indirectly by BKFS LLC, BKFS Inc. and Black Knight. Exhibit 99.1 (Joint Filer Information) is incorporated herein by reference. See Exhibit 99.1 for signatures. 2020-07-01