X0306 4 2021-06-14 0 0001851003 Zeta Global Holdings Corp. ZETA 0001241677 NIEHAUS ROBERT H 600 LEXINGTON AVE., 31ST FLOOR NEW YORK NY 10022 1 0 1 0 0001505996 Greenhill Capital Partners III, L.P. 600 LEXINGTON AVE., 31ST FLOOR NEW YORK NY 10022 0 0 1 0 0001505994 Greenhill Capital Partners (Employees) III, L.P. 600 LEXINGTON AVE. 31ST FLOOR NEW YORK NY 10022 0 0 1 0 0001505993 Greenhill Capital Partners (GHL) III, L.P. 600 LEXINGTON AVE. 31ST FLOOR NEW YORK NY 10022 0 0 1 0 0001505995 Greenhill Capital Partners (Cayman Islands) III, L.P. 600 LEXINGTON AVE. 31ST FLOOR NEW YORK NY 10022 0 0 1 0 0001724988 GCP Capital Partners (Cayman) IV, L.P. 600 LEXINGTON AVE. 31ST FLOOR NEW YORK NY 10022 0 0 1 0 0001724991 GCP Capital Partners IV, L.P. 600 LEXINGTON AVE. 31ST FLOOR NEW YORK NY 10022 0 0 1 0 Common Stock 2021-06-14 4 S 0 1047877 10.00 D 17146891 I See footnote Represents shares of Class A common stock sold in the Issuer's Initial Public Offering and consists of: (i) 527,843 shares of Class A common stock held directly by Greenhill Capital Partners III, L.P., of which GCP Managing Partner III, L.P. ("Greenhill III GP") is the general partner; (ii) 103,393 shares of Class A common stock held directly by Greenhill Capital Partners (Cayman Islands) III, L.P., of which Greenhill III GP is the general partner; (iii) 220,144 shares of Class A common stock held directly by Greenhill Capital Partners (Employees) III, L.P. of which Greenhill III GP is the general partner; (iv) 95,345 shares of Class A common stock held directly by Greenhill Capital Partners (GHL) III, L.P. of which Greenhill III GP is the general partner; (v) 99,282 shares of Class A common stock held directly by GCP Capital Partners IV, L.P. of which GCP Managing Partner IV, L.P. ("Greenhill IV GP") is the general partner; and (Continued from Footnote 1) (vi) 1,870 shares of Class A common stock held directly by GCP Capital Partners (Cayman) IV, L.P. of which Greenhill IV GP is the general partner. Consists of: (i) 8,156,208 shares of Class A common stock held directly by Greenhill Capital Partners III, L.P.; (ii) 1,597,626 shares of Class A common stock held directly by Greenhill Capital Partners (Cayman Islands) III, L.P.; (iii) 3,401,659 shares of Class A common stock held directly by Greenhill Capital Partners (Employees) III, L.P.; (iv) 1,473,280 shares of Class A common stock held directly by Greenhill Capital Partners (GHL) III, L.P.; (v) 1,591,211 shares of Class A common stock held directly by GCP Capital Partners IV, L.P.; and (vi) 29,976 shares of Class A common stock held directly by GCP Capital Partners (Cayman) IV, L.P.. Also includes 896,931 shares of restricted Class A common stock. The general partner of Greenhill III GP is GCP Managing Partner III GP, LLC, which has sole voting and investment power. Robert Niehaus, Frank Pottow, Boris Gutin and Cyrus Hormazdi are the members of the investment committee of GCP Capital Partners, LLC, the investment manager of each of the Greenhill shareholders, and share such powers. The general partner of Greenhill IV GP is GCP Managing Partner IV GP, LLC, which has sole voting and investment power. Robert Niehaus, Frank Pottow, Boris Gutin and Cyrus Hormazdi are the members of the investment committee of GCP Capital Partners, LLC, the investment manager of each of the Greenhill shareholders, and share such powers. Mr. Niehaus, a member of the Issuer's board of directors, is a member of the investment committee of Greenhill Capital Partners, and may be deemed to share voting and investment power over the shares held by the entities associated with Greenhill Capital Partners. See Exhibit 99.1 - Joint Filer Information /s/ Robert Niehaus 2021-12-08