ZETA

SEC source: 0000899243-21-023986 · doc4.xml · nonDerivative · entry 1

Greiner Christopher E · CIK 0001631087 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,682,301

F1 · shares: Represents an award of restricted stock. Each share of restricted stock entitles the holder to receive one share of Class A Common Stock. The restricted stock vests in sixteen quarterly installments beginning one year after the closing of the Issuer's initial public offering and does not expire.

SEC source: 0000899243-21-047337 · doc4.xml · nonDerivative · entry 1

NIEHAUS ROBERT H · CIK 0001241677 · Director · 10% owner

Greenhill Capital Partners III, L.P. · CIK 0001505996 · 10% owner

Greenhill Capital Partners (Employees) III, L.P. · CIK 0001505994 · 10% owner

Greenhill Capital Partners (GHL) III, L.P. · CIK 0001505993 · 10% owner

Greenhill Capital Partners (Cayman Islands) III, L.P. · CIK 0001505995 · 10% owner

GCP Capital Partners (Cayman) IV, L.P. · CIK 0001724988 · 10% owner

GCP Capital Partners IV, L.P. · CIK 0001724991 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 17,146,891

F1 · shares: 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

F2 · shares: (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.

F3 · balance_after: 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.

F4 · ownership.nature: 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.