The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

  1  

  NAMES OF REPORTING PERSONS

  Schuck Henry

  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)

  (a)  ☐        (b)  ☒

  SEC USE ONLY

  CITIZENSHIP OR PLACE OF ORGANIZATION

  United States

NUMBER OF

SHARES

 BENEFICIALLY 

OWNED BY

EACH

REPORTING

PERSON

WITH

  SOLE VOTING POWER

  17,998,494 ⁽¹⁾

  SHARED VOTING POWER

  13,377,329 ⁽²⁾

  SOLE DISPOSITIVE POWER

  17,998,494 ⁽¹⁾

  SHARED DISPOSITIVE POWER

  13,377,329 ⁽²⁾

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

  31,375,823

  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See Instructions)

  ☐

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

  7.8% ⁽³⁾

  TYPE OF REPORTING PERSON (See Instructions)

  IN

Consists of (i) 14,083,994 shares of Common Stock, par value $0.01 per share (the “Common Stock”), of ZoomInfo Technologies Inc. (the “Issuer”) held directly by Henry Schuck, (ii) 204,007 shares of Common Stock subject to outstanding restricted stock awards, (iii) 2,224,330 shares of Common Stock held directly by HSKB Funds, LLC, (iv) 1,082,119 shares of Common Stock held directly by HSKB Funds II, LLC and (v) 404,044 shares of Common Stock held by a grantor trust. HSKB Funds, LLC and HSKB Funds II, LLC are managed by HLS Management, LLC. Henry Schuck is the sole member of HLS Management, LLC. Henry Schuck only has an economic interest in 1,848,514 shares of Common Stock held by HSKB and no economic interest in shares of Common Stock held by HSKB II.

Consists of shares of Common Stock held directly by DO Holdings (WA), LLC (“DO Holdings”). DO Holdings is substantially owned by Henry Schuck and Kirk Norman Brown.

Calculated based on 403,657,009 shares of Common Stock outstanding as of October 21, 2022, as reported in the 10-Q for the quarterly period ended September 30, 2022 filed with the Securities and Exchange Commission by the issuer on November 1, 2022 (the “Third Quarter 10-Q”).

  NAMES OF REPORTING PERSONS

  DO Holdings (WA), LLC

  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)

  (a)  ☐        (b)  ☒

  SEC USE ONLY

  CITIZENSHIP OR PLACE OF ORGANIZATION

  Washington

NUMBER OF

SHARES

 BENEFICIALLY 

OWNED BY

EACH

REPORTING

PERSON

WITH

  SOLE VOTING POWER

  0

  SHARED VOTING POWER

  13,377,329 ⁽¹⁾

  SOLE DISPOSITIVE POWER

  0

  SHARED DISPOSITIVE POWER

  13,377,329 ⁽¹⁾

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

  13,377,329 ⁽¹⁾

  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See Instructions)

  ☐

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

  3.3% ⁽²⁾

  TYPE OF REPORTING PERSON (See Instructions)

  OO

DO Holdings is substantially owned by Henry Schuck and Kirk Norman Brown.

Calculated based on 403,657,009 shares of Common Stock outstanding as of October 21, 2022, as reported in the Third Quarter 10-Q.

  NAMES OF REPORTING PERSONS

  Brown Kirk Norman

  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)

  (a)  ☐        (b)  ☒

  SEC USE ONLY

  CITIZENSHIP OR PLACE OF ORGANIZATION

  United States

NUMBER OF

SHARES

 BENEFICIALLY 

OWNED BY

EACH

REPORTING

PERSON

WITH

  SOLE VOTING POWER

  7,616,614

  SHARED VOTING POWER

  13,377,329 ⁽¹⁾

  SOLE DISPOSITIVE POWER

  7,616,614

  SHARED DISPOSITIVE POWER

  13,377,329 ⁽¹⁾

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

  20,993,943

  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See Instructions)

  ☐

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

  5.2% ⁽²⁾

  TYPE OF REPORTING PERSON (See Instructions)

  IN

Consists of shares of Common Stock held directly by DO Holdings. DO Holdings is substantially owned by Henry Schuck and Kirk Norman Brown.

Calculated based on 403,657,009 shares of Common Stock outstanding as of October 21, 2022, as reported in the Third Quarter 10-Q.

NAME OF ISSUER:

ADDRESS OF ISSUER’S PRINCIPAL EXECUTIVE OFFICES:

NAME OF PERSON FILING:

ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE:

CITIZENSHIP:

TITLE OF CLASS OF SECURITIES:

CUSIP NUMBER:

IF THIS STATEMENT IS FILED PURSUANT TO §§ 240.13d-1(b), OR 240.13d-2(b) OR (c), CHECK WHETHER THE PERSON FILING IS A:

(a)

☐

(b)

☐

(c)

☐

(d)

☐

(e)

☐

(f)

☐

(g)

☐

(h)

☐

(i)

☐

(j)

☐

(k)

☐

OWNERSHIP.

(a)    Amount beneficially owned:

Henry Schuck

DO Holdings

Kirk Norman Brown

(b)    Percent of class:

Henry Schuck

DO Holdings

Kirk Norman Brown

(c)    Number of shares as to which the person has:

(i)    Sole power to vote or to direct the vote

Henry Schuck

DO Holdings

Kirk Norman Brown

(ii)    Shared power to vote or to direct the vote

Henry Schuck

DO Holdings

Kirk Norman Brown

(iii)  Sole power to dispose or to direct the disposition of

Henry Schuck

DO Holdings

Kirk Norman Brown

(iv)  Shared power to dispose or to direct the disposition of

Henry Schuck

DO Holdings

Kirk Norman Brown

OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS.

OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON.

IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY OR CONTROL PERSON.

IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP.

Notice of Dissolution of Group.

CERTIFICATIONS.