GTM

SEC source: 0001415889-21-002803 · form4-06032021_030600.xml · derivative · entry 4

DO Holdings (WA), LLC · CIK 0001813992 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 56,970,857

Underlying: Class A Common Stock · 195,021 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Pursuant to the terms of the limited liability company agreement for ZoomInfo Holdings LLC ("OpCo"), limited liability company units of OpCo ("OpCo Units") and an equal number of shares of the Issuer's Class B common stock ("Class B Common Stock"), together are exchangeable for shares of Issuer's Class A common stock on a one-for-one basis at the discretion of the Reporting Person, subject to exchange rate adjustments for stock splits, stock dividends, and reclassifications. These exchange rights do not expire. Shares of Class B Common Stock have no economic value and have 10 votes per share. The Reporting Person effected an exchange of 195,021 OpCo Units and an equal number of shares of Class B Common Stock on June 1, 2021.

F2 · kind: Pursuant to the terms of the limited liability company agreement for ZoomInfo Holdings LLC ("OpCo"), limited liability company units of OpCo ("OpCo Units") and an equal number of shares of the Issuer's Class B common stock ("Class B Common Stock"), together are exchangeable for shares of Issuer's Class A common stock on a one-for-one basis at the discretion of the Reporting Person, subject to exchange rate adjustments for stock splits, stock dividends, and reclassifications. These exchange rights do not expire. Shares of Class B Common Stock have no economic value and have 10 votes per share. The Reporting Person effected an exchange of 195,021 OpCo Units and an equal number of shares of Class B Common Stock on June 1, 2021.

F2 · derivative.exercise_date: Pursuant to the terms of the limited liability company agreement for ZoomInfo Holdings LLC ("OpCo"), limited liability company units of OpCo ("OpCo Units") and an equal number of shares of the Issuer's Class B common stock ("Class B Common Stock"), together are exchangeable for shares of Issuer's Class A common stock on a one-for-one basis at the discretion of the Reporting Person, subject to exchange rate adjustments for stock splits, stock dividends, and reclassifications. These exchange rights do not expire. Shares of Class B Common Stock have no economic value and have 10 votes per share. The Reporting Person effected an exchange of 195,021 OpCo Units and an equal number of shares of Class B Common Stock on June 1, 2021.

F2 · derivative.expiration_date: Pursuant to the terms of the limited liability company agreement for ZoomInfo Holdings LLC ("OpCo"), limited liability company units of OpCo ("OpCo Units") and an equal number of shares of the Issuer's Class B common stock ("Class B Common Stock"), together are exchangeable for shares of Issuer's Class A common stock on a one-for-one basis at the discretion of the Reporting Person, subject to exchange rate adjustments for stock splits, stock dividends, and reclassifications. These exchange rights do not expire. Shares of Class B Common Stock have no economic value and have 10 votes per share. The Reporting Person effected an exchange of 195,021 OpCo Units and an equal number of shares of Class B Common Stock on June 1, 2021.

SEC source: 0001415889-21-002803 · form4-06032021_030600.xml · nonDerivative · entry 3

DO Holdings (WA), LLC · CIK 0001813992 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by DO Holdings (WA), LLC ("DO Holdings") on December 15, 2020. DO Holdings is owned by Henry Schuck and Kirk Brown. The transactions reported in this Form 4 were for the benefit of Kirk Brown.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $43.21 to $43.65, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

SEC source: 0001415889-21-002803 · form4-06032021_030600.xml · nonDerivative · entry 2

DO Holdings (WA), LLC · CIK 0001813992 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,491

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by DO Holdings (WA), LLC ("DO Holdings") on December 15, 2020. DO Holdings is owned by Henry Schuck and Kirk Brown. The transactions reported in this Form 4 were for the benefit of Kirk Brown.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $42.19 to $43.18, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

SEC source: 0001415889-21-002803 · form4-06032021_030600.xml · nonDerivative · entry 1

DO Holdings (WA), LLC · CIK 0001813992 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 195,021

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by DO Holdings (WA), LLC ("DO Holdings") on December 15, 2020. DO Holdings is owned by Henry Schuck and Kirk Brown. The transactions reported in this Form 4 were for the benefit of Kirk Brown.

F2 · kind: Pursuant to the terms of the limited liability company agreement for ZoomInfo Holdings LLC ("OpCo"), limited liability company units of OpCo ("OpCo Units") and an equal number of shares of the Issuer's Class B common stock ("Class B Common Stock"), together are exchangeable for shares of Issuer's Class A common stock on a one-for-one basis at the discretion of the Reporting Person, subject to exchange rate adjustments for stock splits, stock dividends, and reclassifications. These exchange rights do not expire. Shares of Class B Common Stock have no economic value and have 10 votes per share. The Reporting Person effected an exchange of 195,021 OpCo Units and an equal number of shares of Class B Common Stock on June 1, 2021.

F2 · price: Pursuant to the terms of the limited liability company agreement for ZoomInfo Holdings LLC ("OpCo"), limited liability company units of OpCo ("OpCo Units") and an equal number of shares of the Issuer's Class B common stock ("Class B Common Stock"), together are exchangeable for shares of Issuer's Class A common stock on a one-for-one basis at the discretion of the Reporting Person, subject to exchange rate adjustments for stock splits, stock dividends, and reclassifications. These exchange rights do not expire. Shares of Class B Common Stock have no economic value and have 10 votes per share. The Reporting Person effected an exchange of 195,021 OpCo Units and an equal number of shares of Class B Common Stock on June 1, 2021.

SEC source: 0001415889-21-002805 · form4-06032021_030622.xml · derivative · entry 4

Brown Kirk Norman · CIK 0001814058 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 26,060,816

Underlying: Class A Common Stock · 195,021 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Pursuant to the terms of the limited liability company agreement for ZoomInfo Holdings LLC ("OpCo"), limited liability company units of OpCo ("OpCo Units") and an equal number of shares of the Issuer's Class B common stock ("Class B Common Stock"), together are exchangeable for shares of Issuer's Class A common stock on a one-for-one basis at the discretion of DO Holdings, subject to exchange rate adjustments for stock splits, stock dividends, and reclassifications. These exchange rights do not expire. Shares of Class B Common Stock have no economic value and have 10 votes per share. DO Holdings effected an exchange of 195,021 OpCo Units and an equal number of shares of Class B Common Stock on June 1, 2021.

F3 · derivative.exercise_date: Pursuant to the terms of the limited liability company agreement for ZoomInfo Holdings LLC ("OpCo"), limited liability company units of OpCo ("OpCo Units") and an equal number of shares of the Issuer's Class B common stock ("Class B Common Stock"), together are exchangeable for shares of Issuer's Class A common stock on a one-for-one basis at the discretion of DO Holdings, subject to exchange rate adjustments for stock splits, stock dividends, and reclassifications. These exchange rights do not expire. Shares of Class B Common Stock have no economic value and have 10 votes per share. DO Holdings effected an exchange of 195,021 OpCo Units and an equal number of shares of Class B Common Stock on June 1, 2021.

F3 · derivative.expiration_date: Pursuant to the terms of the limited liability company agreement for ZoomInfo Holdings LLC ("OpCo"), limited liability company units of OpCo ("OpCo Units") and an equal number of shares of the Issuer's Class B common stock ("Class B Common Stock"), together are exchangeable for shares of Issuer's Class A common stock on a one-for-one basis at the discretion of DO Holdings, subject to exchange rate adjustments for stock splits, stock dividends, and reclassifications. These exchange rights do not expire. Shares of Class B Common Stock have no economic value and have 10 votes per share. DO Holdings effected an exchange of 195,021 OpCo Units and an equal number of shares of Class B Common Stock on June 1, 2021.

F6 · balance_after: Reflects the Reporting Person's proportionate pecuniary interest in the securities held directly by DO Holdings following the sales reported in this Form 4.

F6 · ownership.nature: Reflects the Reporting Person's proportionate pecuniary interest in the securities held directly by DO Holdings following the sales reported in this Form 4.

SEC source: 0001415889-21-002805 · form4-06032021_030622.xml · nonDerivative · entry 3

Brown Kirk Norman · CIK 0001814058 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by DO Holdings (WA), LLC ("DO Holdings") on December 15, 2020. DO Holdings is owned by the Reporting Person and Henry Schuck. The transactions reported in this Form 4 were for the benefit of the Reporting Person.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $43.21 to $43.65, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

F2 · ownership.nature: Reflects securities held directly by DO Holdings.

SEC source: 0001415889-21-002805 · form4-06032021_030622.xml · nonDerivative · entry 2

Brown Kirk Norman · CIK 0001814058 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 5,491

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by DO Holdings (WA), LLC ("DO Holdings") on December 15, 2020. DO Holdings is owned by the Reporting Person and Henry Schuck. The transactions reported in this Form 4 were for the benefit of the Reporting Person.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $42.19 to $43.18, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

F2 · ownership.nature: Reflects securities held directly by DO Holdings.

SEC source: 0001415889-21-002805 · form4-06032021_030622.xml · nonDerivative · entry 1

Brown Kirk Norman · CIK 0001814058 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 195,021

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by DO Holdings (WA), LLC ("DO Holdings") on December 15, 2020. DO Holdings is owned by the Reporting Person and Henry Schuck. The transactions reported in this Form 4 were for the benefit of the Reporting Person.

F2 · kind: Reflects securities held directly by DO Holdings.

F3 · kind: Pursuant to the terms of the limited liability company agreement for ZoomInfo Holdings LLC ("OpCo"), limited liability company units of OpCo ("OpCo Units") and an equal number of shares of the Issuer's Class B common stock ("Class B Common Stock"), together are exchangeable for shares of Issuer's Class A common stock on a one-for-one basis at the discretion of DO Holdings, subject to exchange rate adjustments for stock splits, stock dividends, and reclassifications. These exchange rights do not expire. Shares of Class B Common Stock have no economic value and have 10 votes per share. DO Holdings effected an exchange of 195,021 OpCo Units and an equal number of shares of Class B Common Stock on June 1, 2021.

F3 · price: Pursuant to the terms of the limited liability company agreement for ZoomInfo Holdings LLC ("OpCo"), limited liability company units of OpCo ("OpCo Units") and an equal number of shares of the Issuer's Class B common stock ("Class B Common Stock"), together are exchangeable for shares of Issuer's Class A common stock on a one-for-one basis at the discretion of DO Holdings, subject to exchange rate adjustments for stock splits, stock dividends, and reclassifications. These exchange rights do not expire. Shares of Class B Common Stock have no economic value and have 10 votes per share. DO Holdings effected an exchange of 195,021 OpCo Units and an equal number of shares of Class B Common Stock on June 1, 2021.

F2 · ownership.nature: Reflects securities held directly by DO Holdings.

SEC source: 0001794515-21-000138 · wf-form4_162276877772501.xml · derivative · entry 5

Hyzer Peter Cameron · CIK 0001813397 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,603,518

Underlying: Class A Common Stock · 20,000 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: Reflects Class P limited liability company units of ZoomInfo Holdings LLC ("Class P Units") which are profits interests that are economically similar to a stock settled stock option. Vested Class P units are exchangeable, at the holder's election, into a number of shares of Class A common stock ("Class A Common Stock") of ZoomInfo Technologies Inc. (the "Issuer") equal in value to the "spread value" represented by the excess of the value of shares of Class A Common Stock at the time of exchange above the "distribution threshold" associated with the Class P Units, multiplied by the number of Class P Units being exchanged. The number reflected in Table II reflects the number of Class P Units held by the Reporting Person. Reflects an original amount of 1,753,518 Class P Units, of which 50% vested on November 12, 2020, and the remaining 50% vest in equal monthly installments during the 24 months following November 12, 2020.

F2 · kind: This transaction was effected pursuant to a 10b5-1 trading plan entered into prior to November 30, 2020.

F1 · derivative.exercise_date: Reflects Class P limited liability company units of ZoomInfo Holdings LLC ("Class P Units") which are profits interests that are economically similar to a stock settled stock option. Vested Class P units are exchangeable, at the holder's election, into a number of shares of Class A common stock ("Class A Common Stock") of ZoomInfo Technologies Inc. (the "Issuer") equal in value to the "spread value" represented by the excess of the value of shares of Class A Common Stock at the time of exchange above the "distribution threshold" associated with the Class P Units, multiplied by the number of Class P Units being exchanged. The number reflected in Table II reflects the number of Class P Units held by the Reporting Person. Reflects an original amount of 1,753,518 Class P Units, of which 50% vested on November 12, 2020, and the remaining 50% vest in equal monthly installments during the 24 months following November 12, 2020.

F1 · derivative.expiration_date: Reflects Class P limited liability company units of ZoomInfo Holdings LLC ("Class P Units") which are profits interests that are economically similar to a stock settled stock option. Vested Class P units are exchangeable, at the holder's election, into a number of shares of Class A common stock ("Class A Common Stock") of ZoomInfo Technologies Inc. (the "Issuer") equal in value to the "spread value" represented by the excess of the value of shares of Class A Common Stock at the time of exchange above the "distribution threshold" associated with the Class P Units, multiplied by the number of Class P Units being exchanged. The number reflected in Table II reflects the number of Class P Units held by the Reporting Person. Reflects an original amount of 1,753,518 Class P Units, of which 50% vested on November 12, 2020, and the remaining 50% vest in equal monthly installments during the 24 months following November 12, 2020.

SEC source: 0001794515-21-000138 · wf-form4_162276877772501.xml · nonDerivative · entry 4

Hyzer Peter Cameron · CIK 0001813397 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F2 · kind: This transaction was effected pursuant to a 10b5-1 trading plan entered into prior to November 30, 2020.

F5 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions ranging from $43.23 to $43.65, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

SEC source: 0001794515-21-000138 · wf-form4_162276877772501.xml · nonDerivative · entry 3

Hyzer Peter Cameron · CIK 0001813397 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 600

F2 · kind: This transaction was effected pursuant to a 10b5-1 trading plan entered into prior to November 30, 2020.

F4 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions ranging from $42.20 to $43.14, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

SEC source: 0001794515-21-000138 · wf-form4_162276877772501.xml · nonDerivative · entry 2

Hyzer Peter Cameron · CIK 0001813397 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,174

F2 · kind: This transaction was effected pursuant to a 10b5-1 trading plan entered into prior to November 30, 2020.

F3 · kind: Reflects shares deemed to be withheld in connection with the exchange of Class P Units described herein.

SEC source: 0001794515-21-000138 · wf-form4_162276877772501.xml · nonDerivative · entry 1

Hyzer Peter Cameron · CIK 0001813397 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,000

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: Reflects Class P limited liability company units of ZoomInfo Holdings LLC ("Class P Units") which are profits interests that are economically similar to a stock settled stock option. Vested Class P units are exchangeable, at the holder's election, into a number of shares of Class A common stock ("Class A Common Stock") of ZoomInfo Technologies Inc. (the "Issuer") equal in value to the "spread value" represented by the excess of the value of shares of Class A Common Stock at the time of exchange above the "distribution threshold" associated with the Class P Units, multiplied by the number of Class P Units being exchanged. The number reflected in Table II reflects the number of Class P Units held by the Reporting Person. Reflects an original amount of 1,753,518 Class P Units, of which 50% vested on November 12, 2020, and the remaining 50% vest in equal monthly installments during the 24 months following November 12, 2020.

F2 · kind: This transaction was effected pursuant to a 10b5-1 trading plan entered into prior to November 30, 2020.

SEC source: 0001794515-21-000144 · wf-form4_162280979738414.xml · derivative · entry 1

HSKB Funds II, LLC · CIK 0001834202 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,832,834

Underlying: Class A Common Stock · 21,538 shares

Expires not disclosed

F1 · derivative.exercise_price: Pursuant to the terms of the limited liability company agreement for ZoomInfo Intermediate Holdings LLC ("HoldCo"), limited liability company units of HoldCo ("HoldCo Units") and an equal number of shares of Class B Common Stock ("Class B Common Stock") of ZoomInfo Technologies Inc. ("ZoomInfo"), together are exchangeable for shares of Class A Common Stock of ZoomInfo on a one-for-one basis at the discretion of the holder, subject to exchange rate adjustments for stock splits, stock dividends, and reclassifications. These exchange rights do not expire. Shares of Class B Common Stock have no economic value and have 10 votes per share.

F2 · kind: Reflects a distribution of HoldCo Units to one or more employees of ZoomInfo and its subsidiaries.

F1 · derivative.exercise_date: Pursuant to the terms of the limited liability company agreement for ZoomInfo Intermediate Holdings LLC ("HoldCo"), limited liability company units of HoldCo ("HoldCo Units") and an equal number of shares of Class B Common Stock ("Class B Common Stock") of ZoomInfo Technologies Inc. ("ZoomInfo"), together are exchangeable for shares of Class A Common Stock of ZoomInfo on a one-for-one basis at the discretion of the holder, subject to exchange rate adjustments for stock splits, stock dividends, and reclassifications. These exchange rights do not expire. Shares of Class B Common Stock have no economic value and have 10 votes per share.

F1 · derivative.expiration_date: Pursuant to the terms of the limited liability company agreement for ZoomInfo Intermediate Holdings LLC ("HoldCo"), limited liability company units of HoldCo ("HoldCo Units") and an equal number of shares of Class B Common Stock ("Class B Common Stock") of ZoomInfo Technologies Inc. ("ZoomInfo"), together are exchangeable for shares of Class A Common Stock of ZoomInfo on a one-for-one basis at the discretion of the holder, subject to exchange rate adjustments for stock splits, stock dividends, and reclassifications. These exchange rights do not expire. Shares of Class B Common Stock have no economic value and have 10 votes per share.

F1 · derivative.underlying: Pursuant to the terms of the limited liability company agreement for ZoomInfo Intermediate Holdings LLC ("HoldCo"), limited liability company units of HoldCo ("HoldCo Units") and an equal number of shares of Class B Common Stock ("Class B Common Stock") of ZoomInfo Technologies Inc. ("ZoomInfo"), together are exchangeable for shares of Class A Common Stock of ZoomInfo on a one-for-one basis at the discretion of the holder, subject to exchange rate adjustments for stock splits, stock dividends, and reclassifications. These exchange rights do not expire. Shares of Class B Common Stock have no economic value and have 10 votes per share.

SEC source: 0001794515-21-000140 · wf-form4_162280955313449.xml · derivative · entry 6

Hays Joseph Christopher · CIK 0001813655 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 96,709

Underlying: Class A Common Stock · 1,059 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F7 · derivative.exercise_price: Pursuant to the terms of the limited liability company agreement for OpCo, OpCo Units and an equal number of shares of Class B Common Stock, together are exchangeable for shares of Class A Common Stock on a one-for-one basis at the discretion of the holder, subject to exchange rate adjustments for stock splits, stock dividends, and reclassifications. These exchange rights do not expire. Shares of Class B Common Stock have no economic value and have 10 votes per share.

F1 · kind: On June 1, 2021, upon vesting limited liability company units of HSKB Funds, LLC ("HSKB Units") settled into limited liability company units ("OpCo Units") of ZoomInfo Holdings LLC ("OpCo") together with an equal number of shares of Class B common stock ("Class B Common Stock") of ZoomInfo Technologies Inc. ("ZoomInfo"). A portion of these OpCo Units and shares of Class B Common Stock were exchanged for shares of the Issuer's Class A common stock ("Class A Common Stock") as described herein.

F7 · derivative.exercise_date: Pursuant to the terms of the limited liability company agreement for OpCo, OpCo Units and an equal number of shares of Class B Common Stock, together are exchangeable for shares of Class A Common Stock on a one-for-one basis at the discretion of the holder, subject to exchange rate adjustments for stock splits, stock dividends, and reclassifications. These exchange rights do not expire. Shares of Class B Common Stock have no economic value and have 10 votes per share.

F7 · derivative.expiration_date: Pursuant to the terms of the limited liability company agreement for OpCo, OpCo Units and an equal number of shares of Class B Common Stock, together are exchangeable for shares of Class A Common Stock on a one-for-one basis at the discretion of the holder, subject to exchange rate adjustments for stock splits, stock dividends, and reclassifications. These exchange rights do not expire. Shares of Class B Common Stock have no economic value and have 10 votes per share.

SEC source: 0001794515-21-000140 · wf-form4_162280955313449.xml · derivative · entry 5

Hays Joseph Christopher · CIK 0001813655 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 97,768

Underlying: Class A Common Stock · 5,314 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F7 · derivative.exercise_price: Pursuant to the terms of the limited liability company agreement for OpCo, OpCo Units and an equal number of shares of Class B Common Stock, together are exchangeable for shares of Class A Common Stock on a one-for-one basis at the discretion of the holder, subject to exchange rate adjustments for stock splits, stock dividends, and reclassifications. These exchange rights do not expire. Shares of Class B Common Stock have no economic value and have 10 votes per share.

F1 · kind: On June 1, 2021, upon vesting limited liability company units of HSKB Funds, LLC ("HSKB Units") settled into limited liability company units ("OpCo Units") of ZoomInfo Holdings LLC ("OpCo") together with an equal number of shares of Class B common stock ("Class B Common Stock") of ZoomInfo Technologies Inc. ("ZoomInfo"). A portion of these OpCo Units and shares of Class B Common Stock were exchanged for shares of the Issuer's Class A common stock ("Class A Common Stock") as described herein.

F7 · derivative.exercise_date: Pursuant to the terms of the limited liability company agreement for OpCo, OpCo Units and an equal number of shares of Class B Common Stock, together are exchangeable for shares of Class A Common Stock on a one-for-one basis at the discretion of the holder, subject to exchange rate adjustments for stock splits, stock dividends, and reclassifications. These exchange rights do not expire. Shares of Class B Common Stock have no economic value and have 10 votes per share.

F7 · derivative.expiration_date: Pursuant to the terms of the limited liability company agreement for OpCo, OpCo Units and an equal number of shares of Class B Common Stock, together are exchangeable for shares of Class A Common Stock on a one-for-one basis at the discretion of the holder, subject to exchange rate adjustments for stock splits, stock dividends, and reclassifications. These exchange rights do not expire. Shares of Class B Common Stock have no economic value and have 10 votes per share.

SEC source: 0001794515-21-000140 · wf-form4_162280955313449.xml · derivative · entry 4

Hays Joseph Christopher · CIK 0001813655 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 79,730

Underlying: Class A Common Stock · 5,314 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_price: Each of these HSKB Units represents the economic value of one OpCo Unit. Upon vesting, each HSKB Unit settles into an OpCo Unit and a share of Class B Common Stock, which together may be exchanged for shares of Class A Common Stock on a one-for-one basis, subject to exchange rate adjustments for stock splits, stock dividends, and reclassifications. Shares of Class B common stock have no economic value and have 10 votes per shares.

F1 · kind: On June 1, 2021, upon vesting limited liability company units of HSKB Funds, LLC ("HSKB Units") settled into limited liability company units ("OpCo Units") of ZoomInfo Holdings LLC ("OpCo") together with an equal number of shares of Class B common stock ("Class B Common Stock") of ZoomInfo Technologies Inc. ("ZoomInfo"). A portion of these OpCo Units and shares of Class B Common Stock were exchanged for shares of the Issuer's Class A common stock ("Class A Common Stock") as described herein.

F6 · derivative.exercise_date: Reflects an original amount of 255,124 HSKB Units of which 101,297 vested on December 5, 2020, 42,208 vested on December 14, 2020 and the remaining unvested portion vests in twenty-one equal monthly installments beginning on January 1, 2021, subject to accelerated vesting upon certain change in control events and other vesting conditions.

F6 · derivative.expiration_date: Reflects an original amount of 255,124 HSKB Units of which 101,297 vested on December 5, 2020, 42,208 vested on December 14, 2020 and the remaining unvested portion vests in twenty-one equal monthly installments beginning on January 1, 2021, subject to accelerated vesting upon certain change in control events and other vesting conditions.

F5 · derivative.underlying: Each of these HSKB Units represents the economic value of one OpCo Unit. Upon vesting, each HSKB Unit settles into an OpCo Unit and a share of Class B Common Stock, which together may be exchanged for shares of Class A Common Stock on a one-for-one basis, subject to exchange rate adjustments for stock splits, stock dividends, and reclassifications. Shares of Class B common stock have no economic value and have 10 votes per shares.

SEC source: 0001794515-21-000140 · wf-form4_162280955313449.xml · nonDerivative · entry 3

Hays Joseph Christopher · CIK 0001813655 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F2 · kind: Reflects shares sold to cover the Reporting Person's tax liability in connection with the vesting of the securities reported herein.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $43.42 to $43.56, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

SEC source: 0001794515-21-000140 · wf-form4_162280955313449.xml · nonDerivative · entry 2

Hays Joseph Christopher · CIK 0001813655 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 36

F2 · kind: Reflects shares sold to cover the Reporting Person's tax liability in connection with the vesting of the securities reported herein.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $42.37 to $43.30, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

SEC source: 0001794515-21-000140 · wf-form4_162280955313449.xml · nonDerivative · entry 1

Hays Joseph Christopher · CIK 0001813655 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,059

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: On June 1, 2021, upon vesting limited liability company units of HSKB Funds, LLC ("HSKB Units") settled into limited liability company units ("OpCo Units") of ZoomInfo Holdings LLC ("OpCo") together with an equal number of shares of Class B common stock ("Class B Common Stock") of ZoomInfo Technologies Inc. ("ZoomInfo"). A portion of these OpCo Units and shares of Class B Common Stock were exchanged for shares of the Issuer's Class A common stock ("Class A Common Stock") as described herein.

SEC source: 0001794515-21-000142 · wf-form4_162280961115866.xml · derivative · entry 1

HSKB Funds, LLC · CIK 0001834204 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,935,390

Underlying: Class A Common Stock · 158,190 shares

Expires not disclosed

F1 · derivative.exercise_price: Pursuant to the terms of the limited liability company agreement for ZoomInfo Holdings LLC ("OpCo"), limited liability company units of OpCo ("OpCo Units") and an equal number of shares of Class B common stock ("Class B Common Stock") of ZoomInfo Technologies Inc. ("ZoomInfo"), together are exchangeable for shares of Class A common stock of ZoomInfo on a one-for-one basis at the discretion of the holder, subject to exchange rate adjustments for stock splits, stock dividends, and reclassifications. These exchange rights do not expire. Shares of Class B Common Stock have no economic value and have 10 votes per share.

F2 · kind: Reflects a distribution of OpCo Units to one or more employees of ZoomInfo and its subsidiaries.

F1 · derivative.exercise_date: Pursuant to the terms of the limited liability company agreement for ZoomInfo Holdings LLC ("OpCo"), limited liability company units of OpCo ("OpCo Units") and an equal number of shares of Class B common stock ("Class B Common Stock") of ZoomInfo Technologies Inc. ("ZoomInfo"), together are exchangeable for shares of Class A common stock of ZoomInfo on a one-for-one basis at the discretion of the holder, subject to exchange rate adjustments for stock splits, stock dividends, and reclassifications. These exchange rights do not expire. Shares of Class B Common Stock have no economic value and have 10 votes per share.

F1 · derivative.expiration_date: Pursuant to the terms of the limited liability company agreement for ZoomInfo Holdings LLC ("OpCo"), limited liability company units of OpCo ("OpCo Units") and an equal number of shares of Class B common stock ("Class B Common Stock") of ZoomInfo Technologies Inc. ("ZoomInfo"), together are exchangeable for shares of Class A common stock of ZoomInfo on a one-for-one basis at the discretion of the holder, subject to exchange rate adjustments for stock splits, stock dividends, and reclassifications. These exchange rights do not expire. Shares of Class B Common Stock have no economic value and have 10 votes per share.

F1 · derivative.underlying: Pursuant to the terms of the limited liability company agreement for ZoomInfo Holdings LLC ("OpCo"), limited liability company units of OpCo ("OpCo Units") and an equal number of shares of Class B common stock ("Class B Common Stock") of ZoomInfo Technologies Inc. ("ZoomInfo"), together are exchangeable for shares of Class A common stock of ZoomInfo on a one-for-one basis at the discretion of the holder, subject to exchange rate adjustments for stock splits, stock dividends, and reclassifications. These exchange rights do not expire. Shares of Class B Common Stock have no economic value and have 10 votes per share.

SEC source: 0001794515-21-000208 · wf-form4a_162821111433666.xml · derivative · entry 1

HSKB Funds, LLC · CIK 0001834204 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,930,996

Underlying: Class A Common Stock · 162,584 shares

Expires not disclosed

F1 · derivative.exercise_price: Pursuant to the terms of the limited liability company agreement for ZoomInfo Holdings LLC ("OpCo"), limited liability company units of OpCo ("OpCo Units") and an equal number of shares of Class B common stock ("Class B Common Stock") of ZoomInfo Technologies Inc. ("ZoomInfo"), together are exchangeable for shares of Class A common stock of ZoomInfo on a one-for-one basis at the discretion of the holder, subject to exchange rate adjustments for stock splits, stock dividends, and reclassifications. These exchange rights do not expire. Shares of Class B Common Stock have no economic value and have 10 votes per share.

F2 · kind: Reflects a distribution of OpCo Units to one or more employees of ZoomInfo and its subsidiaries.

F3 · shares: The Reporting Person is filing this Amendment to Form 4 to correct the number of derivative securities disposed of and the number of derivative securities beneficially owned following the reported transaction included in the original Form 4.

F1 · derivative.exercise_date: Pursuant to the terms of the limited liability company agreement for ZoomInfo Holdings LLC ("OpCo"), limited liability company units of OpCo ("OpCo Units") and an equal number of shares of Class B common stock ("Class B Common Stock") of ZoomInfo Technologies Inc. ("ZoomInfo"), together are exchangeable for shares of Class A common stock of ZoomInfo on a one-for-one basis at the discretion of the holder, subject to exchange rate adjustments for stock splits, stock dividends, and reclassifications. These exchange rights do not expire. Shares of Class B Common Stock have no economic value and have 10 votes per share.

F1 · derivative.expiration_date: Pursuant to the terms of the limited liability company agreement for ZoomInfo Holdings LLC ("OpCo"), limited liability company units of OpCo ("OpCo Units") and an equal number of shares of Class B common stock ("Class B Common Stock") of ZoomInfo Technologies Inc. ("ZoomInfo"), together are exchangeable for shares of Class A common stock of ZoomInfo on a one-for-one basis at the discretion of the holder, subject to exchange rate adjustments for stock splits, stock dividends, and reclassifications. These exchange rights do not expire. Shares of Class B Common Stock have no economic value and have 10 votes per share.

F1 · derivative.underlying: Pursuant to the terms of the limited liability company agreement for ZoomInfo Holdings LLC ("OpCo"), limited liability company units of OpCo ("OpCo Units") and an equal number of shares of Class B common stock ("Class B Common Stock") of ZoomInfo Technologies Inc. ("ZoomInfo"), together are exchangeable for shares of Class A common stock of ZoomInfo on a one-for-one basis at the discretion of the holder, subject to exchange rate adjustments for stock splits, stock dividends, and reclassifications. These exchange rights do not expire. Shares of Class B Common Stock have no economic value and have 10 votes per share.

F3 · derivative.underlying_shares: The Reporting Person is filing this Amendment to Form 4 to correct the number of derivative securities disposed of and the number of derivative securities beneficially owned following the reported transaction included in the original Form 4.

F3 · balance_after: The Reporting Person is filing this Amendment to Form 4 to correct the number of derivative securities disposed of and the number of derivative securities beneficially owned following the reported transaction included in the original Form 4.

SEC source: 0001794515-21-000258 · wf-form4a_162985317430415.xml · derivative · entry 1

HSKB Funds II, LLC · CIK 0001834202 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,726,836

Underlying: Class A Common Stock · 29,045 shares

Expires not disclosed

F1 · derivative.exercise_price: Pursuant to the terms of the limited liability company agreement for ZoomInfo Intermediate Holdings LLC ("HoldCo"), limited liability company units of HoldCo ("HoldCo Units") and an equal number of shares of Class B Common Stock ("Class B Common Stock") of ZoomInfo Technologies Inc. ("ZoomInfo"), together are exchangeable for shares of Class A Common Stock of ZoomInfo on a one-for-one basis at the discretion of the holder, subject to exchange rate adjustments for stock splits, stock dividends, and reclassifications. These exchange rights do not expire. Shares of Class B Common Stock have no economic value and have 10 votes per share.

F2 · kind: Reflects a distribution of HoldCo Units to one or more employees of ZoomInfo and its subsidiaries.

F3 · kind: This Form 4/A is being filed to correct: (a) the number of HoldCo Units reported in the original Form 4 filed by the Reporting Person on June 4, 2021 (the "Original Form 4") as being distributed to one or more employees of ZoomInfo and its subsidiaries, and (b) the number of HoldCo Units beneficially owned after the reported transaction in the Original Form 4. This amendment shall also be deemed to correct the total beneficial ownership reported by the Reporting Person in subsequently filed Forms 4 filed prior to the date hereof.

F3 · shares: This Form 4/A is being filed to correct: (a) the number of HoldCo Units reported in the original Form 4 filed by the Reporting Person on June 4, 2021 (the "Original Form 4") as being distributed to one or more employees of ZoomInfo and its subsidiaries, and (b) the number of HoldCo Units beneficially owned after the reported transaction in the Original Form 4. This amendment shall also be deemed to correct the total beneficial ownership reported by the Reporting Person in subsequently filed Forms 4 filed prior to the date hereof.

F1 · derivative.exercise_date: Pursuant to the terms of the limited liability company agreement for ZoomInfo Intermediate Holdings LLC ("HoldCo"), limited liability company units of HoldCo ("HoldCo Units") and an equal number of shares of Class B Common Stock ("Class B Common Stock") of ZoomInfo Technologies Inc. ("ZoomInfo"), together are exchangeable for shares of Class A Common Stock of ZoomInfo on a one-for-one basis at the discretion of the holder, subject to exchange rate adjustments for stock splits, stock dividends, and reclassifications. These exchange rights do not expire. Shares of Class B Common Stock have no economic value and have 10 votes per share.

F1 · derivative.expiration_date: Pursuant to the terms of the limited liability company agreement for ZoomInfo Intermediate Holdings LLC ("HoldCo"), limited liability company units of HoldCo ("HoldCo Units") and an equal number of shares of Class B Common Stock ("Class B Common Stock") of ZoomInfo Technologies Inc. ("ZoomInfo"), together are exchangeable for shares of Class A Common Stock of ZoomInfo on a one-for-one basis at the discretion of the holder, subject to exchange rate adjustments for stock splits, stock dividends, and reclassifications. These exchange rights do not expire. Shares of Class B Common Stock have no economic value and have 10 votes per share.

F1 · derivative.underlying: Pursuant to the terms of the limited liability company agreement for ZoomInfo Intermediate Holdings LLC ("HoldCo"), limited liability company units of HoldCo ("HoldCo Units") and an equal number of shares of Class B Common Stock ("Class B Common Stock") of ZoomInfo Technologies Inc. ("ZoomInfo"), together are exchangeable for shares of Class A Common Stock of ZoomInfo on a one-for-one basis at the discretion of the holder, subject to exchange rate adjustments for stock splits, stock dividends, and reclassifications. These exchange rights do not expire. Shares of Class B Common Stock have no economic value and have 10 votes per share.

F3 · derivative.underlying_shares: This Form 4/A is being filed to correct: (a) the number of HoldCo Units reported in the original Form 4 filed by the Reporting Person on June 4, 2021 (the "Original Form 4") as being distributed to one or more employees of ZoomInfo and its subsidiaries, and (b) the number of HoldCo Units beneficially owned after the reported transaction in the Original Form 4. This amendment shall also be deemed to correct the total beneficial ownership reported by the Reporting Person in subsequently filed Forms 4 filed prior to the date hereof.

F3 · balance_after: This Form 4/A is being filed to correct: (a) the number of HoldCo Units reported in the original Form 4 filed by the Reporting Person on June 4, 2021 (the "Original Form 4") as being distributed to one or more employees of ZoomInfo and its subsidiaries, and (b) the number of HoldCo Units beneficially owned after the reported transaction in the Original Form 4. This amendment shall also be deemed to correct the total beneficial ownership reported by the Reporting Person in subsequently filed Forms 4 filed prior to the date hereof.

SEC source: 0001209191-21-034225 · doc4.xml · derivative · entry 9

TA ASSOCIATES, L.P. · CIK 0001034569 · Director · 10% owner

TA AP VII-B DO Subsidiary Partnership, L.P. · CIK 0001812579 · Director · 10% owner

TA XI DO AIV II, L.P. · CIK 0001812606 · Director · 10% owner

TA SDF III DO AIV II, L.P. · CIK 0001812605 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 62,852

Underlying: Class A Common Stock · 5,435 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F8 · derivative.exercise_price: Units of Opco represent limited liability company units of Opco and a corresponding number of shares of Class B Common Stock of the Issuer, which together are exchangeable at the option of the holder on a one-for-one basis for shares of Class A Common Stock of the Issuer, subject to customary conversion rate adjustments for stock splits, stock dividends, and reclassifications, pursuant to the amended and restated limited liability company agreement of Opco and have no expiration date. The shares of Class B Common Stock (i) confer no incidents of economic ownership on the holders thereof and (ii) only confer ten-to-one voting rights on the holders thereof.

F8 · derivative.exercise_date: Units of Opco represent limited liability company units of Opco and a corresponding number of shares of Class B Common Stock of the Issuer, which together are exchangeable at the option of the holder on a one-for-one basis for shares of Class A Common Stock of the Issuer, subject to customary conversion rate adjustments for stock splits, stock dividends, and reclassifications, pursuant to the amended and restated limited liability company agreement of Opco and have no expiration date. The shares of Class B Common Stock (i) confer no incidents of economic ownership on the holders thereof and (ii) only confer ten-to-one voting rights on the holders thereof.

F8 · derivative.expiration_date: Units of Opco represent limited liability company units of Opco and a corresponding number of shares of Class B Common Stock of the Issuer, which together are exchangeable at the option of the holder on a one-for-one basis for shares of Class A Common Stock of the Issuer, subject to customary conversion rate adjustments for stock splits, stock dividends, and reclassifications, pursuant to the amended and restated limited liability company agreement of Opco and have no expiration date. The shares of Class B Common Stock (i) confer no incidents of economic ownership on the holders thereof and (ii) only confer ten-to-one voting rights on the holders thereof.

F2 · ownership.nature: TA Associates, L.P. is the ultimate general partner of each of XI DO, SDF III Feeder, Atlantic and Pacific VII-B, XI DO AIV, SDF III DO, Atlantic and Pacific VII-A, Investors IV, AP VII-B, SDF III DO AIV II and XI DO AIV II (collectively, the "TA Associates Funds"). Investment and voting control of the TA Associates Funds is held by TA Associates, L.P. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest in such securities, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

F5 · ownership.nature: Securities are held by TA SDF III DO AIV II, L.P. ("SDF III DO AIV II").

SEC source: 0001209191-21-034225 · doc4.xml · derivative · entry 8

TA ASSOCIATES, L.P. · CIK 0001034569 · Director · 10% owner

TA AP VII-B DO Subsidiary Partnership, L.P. · CIK 0001812579 · Director · 10% owner

TA XI DO AIV II, L.P. · CIK 0001812606 · Director · 10% owner

TA SDF III DO AIV II, L.P. · CIK 0001812605 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 2,991,740

Underlying: Class A Common Stock · 257,185 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F8 · derivative.exercise_price: Units of Opco represent limited liability company units of Opco and a corresponding number of shares of Class B Common Stock of the Issuer, which together are exchangeable at the option of the holder on a one-for-one basis for shares of Class A Common Stock of the Issuer, subject to customary conversion rate adjustments for stock splits, stock dividends, and reclassifications, pursuant to the amended and restated limited liability company agreement of Opco and have no expiration date. The shares of Class B Common Stock (i) confer no incidents of economic ownership on the holders thereof and (ii) only confer ten-to-one voting rights on the holders thereof.

F8 · derivative.exercise_date: Units of Opco represent limited liability company units of Opco and a corresponding number of shares of Class B Common Stock of the Issuer, which together are exchangeable at the option of the holder on a one-for-one basis for shares of Class A Common Stock of the Issuer, subject to customary conversion rate adjustments for stock splits, stock dividends, and reclassifications, pursuant to the amended and restated limited liability company agreement of Opco and have no expiration date. The shares of Class B Common Stock (i) confer no incidents of economic ownership on the holders thereof and (ii) only confer ten-to-one voting rights on the holders thereof.

F8 · derivative.expiration_date: Units of Opco represent limited liability company units of Opco and a corresponding number of shares of Class B Common Stock of the Issuer, which together are exchangeable at the option of the holder on a one-for-one basis for shares of Class A Common Stock of the Issuer, subject to customary conversion rate adjustments for stock splits, stock dividends, and reclassifications, pursuant to the amended and restated limited liability company agreement of Opco and have no expiration date. The shares of Class B Common Stock (i) confer no incidents of economic ownership on the holders thereof and (ii) only confer ten-to-one voting rights on the holders thereof.

F2 · ownership.nature: TA Associates, L.P. is the ultimate general partner of each of XI DO, SDF III Feeder, Atlantic and Pacific VII-B, XI DO AIV, SDF III DO, Atlantic and Pacific VII-A, Investors IV, AP VII-B, SDF III DO AIV II and XI DO AIV II (collectively, the "TA Associates Funds"). Investment and voting control of the TA Associates Funds is held by TA Associates, L.P. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest in such securities, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

F4 · ownership.nature: Securities are held by TA AP VII-B DO Subsidiary Partnership, L.P. ("AP VII-B").

SEC source: 0001209191-21-034225 · doc4.xml · derivative · entry 7

TA ASSOCIATES, L.P. · CIK 0001034569 · Director · 10% owner

TA AP VII-B DO Subsidiary Partnership, L.P. · CIK 0001812579 · Director · 10% owner

TA XI DO AIV II, L.P. · CIK 0001812606 · Director · 10% owner

TA SDF III DO AIV II, L.P. · CIK 0001812605 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 3,332,460

Underlying: Class A Common Stock · 288,841 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F8 · derivative.exercise_price: Units of Opco represent limited liability company units of Opco and a corresponding number of shares of Class B Common Stock of the Issuer, which together are exchangeable at the option of the holder on a one-for-one basis for shares of Class A Common Stock of the Issuer, subject to customary conversion rate adjustments for stock splits, stock dividends, and reclassifications, pursuant to the amended and restated limited liability company agreement of Opco and have no expiration date. The shares of Class B Common Stock (i) confer no incidents of economic ownership on the holders thereof and (ii) only confer ten-to-one voting rights on the holders thereof.

F8 · derivative.exercise_date: Units of Opco represent limited liability company units of Opco and a corresponding number of shares of Class B Common Stock of the Issuer, which together are exchangeable at the option of the holder on a one-for-one basis for shares of Class A Common Stock of the Issuer, subject to customary conversion rate adjustments for stock splits, stock dividends, and reclassifications, pursuant to the amended and restated limited liability company agreement of Opco and have no expiration date. The shares of Class B Common Stock (i) confer no incidents of economic ownership on the holders thereof and (ii) only confer ten-to-one voting rights on the holders thereof.

F8 · derivative.expiration_date: Units of Opco represent limited liability company units of Opco and a corresponding number of shares of Class B Common Stock of the Issuer, which together are exchangeable at the option of the holder on a one-for-one basis for shares of Class A Common Stock of the Issuer, subject to customary conversion rate adjustments for stock splits, stock dividends, and reclassifications, pursuant to the amended and restated limited liability company agreement of Opco and have no expiration date. The shares of Class B Common Stock (i) confer no incidents of economic ownership on the holders thereof and (ii) only confer ten-to-one voting rights on the holders thereof.

F2 · ownership.nature: TA Associates, L.P. is the ultimate general partner of each of XI DO, SDF III Feeder, Atlantic and Pacific VII-B, XI DO AIV, SDF III DO, Atlantic and Pacific VII-A, Investors IV, AP VII-B, SDF III DO AIV II and XI DO AIV II (collectively, the "TA Associates Funds"). Investment and voting control of the TA Associates Funds is held by TA Associates, L.P. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest in such securities, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

F3 · ownership.nature: Securities are held by TA XI DO AIV II, L.P. ("XI DO AIV II").

SEC source: 0001209191-21-034225 · doc4.xml · nonDerivative · entry 6

TA ASSOCIATES, L.P. · CIK 0001034569 · Director · 10% owner

TA AP VII-B DO Subsidiary Partnership, L.P. · CIK 0001812579 · Director · 10% owner

TA XI DO AIV II, L.P. · CIK 0001812606 · Director · 10% owner

TA SDF III DO AIV II, L.P. · CIK 0001812605 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 0

F6 · kind: XI DO AIV II, SDF III DO AIV II and AP VII-B Subsidiary Partnership distributed these shares to one or more of their limited partners and to TA Associates XI GP, LP, TA Associates AP VII GP, LP and TA Associates SDF III GP, LP on a pro rata basis, for no consideration. On the same date, TA Associates XI GP, LP, TA Associates AP VII GP, LP and TA Associates SDF III GP, LP distributed, for no consideration, the shares received in the distribution to one or more of their partners, representing each such partner's pro rata interest in such shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-19 of the Securities and Exchange Act of 1934, as amended.

F7 · price: Shares of the Issuer's Class C Common Stock were converted on a one-for-one basis for shares of Class A Common Stock of the Issuer.

F2 · ownership.nature: TA Associates, L.P. is the ultimate general partner of each of XI DO, SDF III Feeder, Atlantic and Pacific VII-B, XI DO AIV, SDF III DO, Atlantic and Pacific VII-A, Investors IV, AP VII-B, SDF III DO AIV II and XI DO AIV II (collectively, the "TA Associates Funds"). Investment and voting control of the TA Associates Funds is held by TA Associates, L.P. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest in such securities, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

F5 · ownership.nature: Securities are held by TA SDF III DO AIV II, L.P. ("SDF III DO AIV II").

SEC source: 0001209191-21-034225 · doc4.xml · nonDerivative · entry 5

TA ASSOCIATES, L.P. · CIK 0001034569 · Director · 10% owner

TA AP VII-B DO Subsidiary Partnership, L.P. · CIK 0001812579 · Director · 10% owner

TA XI DO AIV II, L.P. · CIK 0001812606 · Director · 10% owner

TA SDF III DO AIV II, L.P. · CIK 0001812605 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 0

F6 · kind: XI DO AIV II, SDF III DO AIV II and AP VII-B Subsidiary Partnership distributed these shares to one or more of their limited partners and to TA Associates XI GP, LP, TA Associates AP VII GP, LP and TA Associates SDF III GP, LP on a pro rata basis, for no consideration. On the same date, TA Associates XI GP, LP, TA Associates AP VII GP, LP and TA Associates SDF III GP, LP distributed, for no consideration, the shares received in the distribution to one or more of their partners, representing each such partner's pro rata interest in such shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-19 of the Securities and Exchange Act of 1934, as amended.

F7 · price: Shares of the Issuer's Class C Common Stock were converted on a one-for-one basis for shares of Class A Common Stock of the Issuer.

F2 · ownership.nature: TA Associates, L.P. is the ultimate general partner of each of XI DO, SDF III Feeder, Atlantic and Pacific VII-B, XI DO AIV, SDF III DO, Atlantic and Pacific VII-A, Investors IV, AP VII-B, SDF III DO AIV II and XI DO AIV II (collectively, the "TA Associates Funds"). Investment and voting control of the TA Associates Funds is held by TA Associates, L.P. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest in such securities, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

F4 · ownership.nature: Securities are held by TA AP VII-B DO Subsidiary Partnership, L.P. ("AP VII-B").

SEC source: 0001209191-21-034225 · doc4.xml · nonDerivative · entry 4

TA ASSOCIATES, L.P. · CIK 0001034569 · Director · 10% owner

TA AP VII-B DO Subsidiary Partnership, L.P. · CIK 0001812579 · Director · 10% owner

TA XI DO AIV II, L.P. · CIK 0001812606 · Director · 10% owner

TA SDF III DO AIV II, L.P. · CIK 0001812605 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 0

F6 · kind: XI DO AIV II, SDF III DO AIV II and AP VII-B Subsidiary Partnership distributed these shares to one or more of their limited partners and to TA Associates XI GP, LP, TA Associates AP VII GP, LP and TA Associates SDF III GP, LP on a pro rata basis, for no consideration. On the same date, TA Associates XI GP, LP, TA Associates AP VII GP, LP and TA Associates SDF III GP, LP distributed, for no consideration, the shares received in the distribution to one or more of their partners, representing each such partner's pro rata interest in such shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-19 of the Securities and Exchange Act of 1934, as amended.

F7 · price: Shares of the Issuer's Class C Common Stock were converted on a one-for-one basis for shares of Class A Common Stock of the Issuer.

F2 · ownership.nature: TA Associates, L.P. is the ultimate general partner of each of XI DO, SDF III Feeder, Atlantic and Pacific VII-B, XI DO AIV, SDF III DO, Atlantic and Pacific VII-A, Investors IV, AP VII-B, SDF III DO AIV II and XI DO AIV II (collectively, the "TA Associates Funds"). Investment and voting control of the TA Associates Funds is held by TA Associates, L.P. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest in such securities, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

F3 · ownership.nature: Securities are held by TA XI DO AIV II, L.P. ("XI DO AIV II").

SEC source: 0001209191-21-034225 · doc4.xml · nonDerivative · entry 3

TA ASSOCIATES, L.P. · CIK 0001034569 · Director · 10% owner

TA AP VII-B DO Subsidiary Partnership, L.P. · CIK 0001812579 · Director · 10% owner

TA XI DO AIV II, L.P. · CIK 0001812606 · Director · 10% owner

TA SDF III DO AIV II, L.P. · CIK 0001812605 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 5,435

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Units of ZoomInfo Holdings LLC ("Opco"), which represent limited liability company units of Opco and a corresponding number of shares of Class B Common Stock of the Issuer, were exchanged on a one-for-one basis for shares of Class A Common Stock of the Issuer pursuant to the amended and restated limited liability company agreement of Opco.

F2 · ownership.nature: TA Associates, L.P. is the ultimate general partner of each of XI DO, SDF III Feeder, Atlantic and Pacific VII-B, XI DO AIV, SDF III DO, Atlantic and Pacific VII-A, Investors IV, AP VII-B, SDF III DO AIV II and XI DO AIV II (collectively, the "TA Associates Funds"). Investment and voting control of the TA Associates Funds is held by TA Associates, L.P. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest in such securities, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

F5 · ownership.nature: Securities are held by TA SDF III DO AIV II, L.P. ("SDF III DO AIV II").

SEC source: 0001209191-21-034225 · doc4.xml · nonDerivative · entry 2

TA ASSOCIATES, L.P. · CIK 0001034569 · Director · 10% owner

TA AP VII-B DO Subsidiary Partnership, L.P. · CIK 0001812579 · Director · 10% owner

TA XI DO AIV II, L.P. · CIK 0001812606 · Director · 10% owner

TA SDF III DO AIV II, L.P. · CIK 0001812605 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 257,185

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Units of ZoomInfo Holdings LLC ("Opco"), which represent limited liability company units of Opco and a corresponding number of shares of Class B Common Stock of the Issuer, were exchanged on a one-for-one basis for shares of Class A Common Stock of the Issuer pursuant to the amended and restated limited liability company agreement of Opco.

F2 · ownership.nature: TA Associates, L.P. is the ultimate general partner of each of XI DO, SDF III Feeder, Atlantic and Pacific VII-B, XI DO AIV, SDF III DO, Atlantic and Pacific VII-A, Investors IV, AP VII-B, SDF III DO AIV II and XI DO AIV II (collectively, the "TA Associates Funds"). Investment and voting control of the TA Associates Funds is held by TA Associates, L.P. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest in such securities, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

F4 · ownership.nature: Securities are held by TA AP VII-B DO Subsidiary Partnership, L.P. ("AP VII-B").

SEC source: 0001209191-21-034225 · doc4.xml · nonDerivative · entry 1

TA ASSOCIATES, L.P. · CIK 0001034569 · Director · 10% owner

TA AP VII-B DO Subsidiary Partnership, L.P. · CIK 0001812579 · Director · 10% owner

TA XI DO AIV II, L.P. · CIK 0001812606 · Director · 10% owner

TA SDF III DO AIV II, L.P. · CIK 0001812605 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 288,841

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Units of ZoomInfo Holdings LLC ("Opco"), which represent limited liability company units of Opco and a corresponding number of shares of Class B Common Stock of the Issuer, were exchanged on a one-for-one basis for shares of Class A Common Stock of the Issuer pursuant to the amended and restated limited liability company agreement of Opco.

F2 · ownership.nature: TA Associates, L.P. is the ultimate general partner of each of XI DO, SDF III Feeder, Atlantic and Pacific VII-B, XI DO AIV, SDF III DO, Atlantic and Pacific VII-A, Investors IV, AP VII-B, SDF III DO AIV II and XI DO AIV II (collectively, the "TA Associates Funds"). Investment and voting control of the TA Associates Funds is held by TA Associates, L.P. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest in such securities, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

F3 · ownership.nature: Securities are held by TA XI DO AIV II, L.P. ("XI DO AIV II").

SEC source: 0001209191-21-034224 · doc4.xml · derivative · entry 11

Mironov Jason · CIK 0001810831 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 62,852

Underlying: Class A Common Stock · 5,435 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F8 · derivative.exercise_price: Units of Opco represent limited liability company units of Opco and a corresponding number of shares of Class B Common Stock of the Issuer, which together are exchangeable at the option of the holder on a one-for-one basis for shares of Class A Common Stock of the Issuer, subject to customary conversion rate adjustments for stock splits, stock dividends, and reclassifications, pursuant to the amended and restated limited liability company agreement of Opco and have no expiration date. The shares of Class B Common Stock (i) confer no incidents of economic ownership on the holders thereof and (ii) only confer ten-to-one voting rights on the holders thereof.

F8 · derivative.exercise_date: Units of Opco represent limited liability company units of Opco and a corresponding number of shares of Class B Common Stock of the Issuer, which together are exchangeable at the option of the holder on a one-for-one basis for shares of Class A Common Stock of the Issuer, subject to customary conversion rate adjustments for stock splits, stock dividends, and reclassifications, pursuant to the amended and restated limited liability company agreement of Opco and have no expiration date. The shares of Class B Common Stock (i) confer no incidents of economic ownership on the holders thereof and (ii) only confer ten-to-one voting rights on the holders thereof.

F8 · derivative.expiration_date: Units of Opco represent limited liability company units of Opco and a corresponding number of shares of Class B Common Stock of the Issuer, which together are exchangeable at the option of the holder on a one-for-one basis for shares of Class A Common Stock of the Issuer, subject to customary conversion rate adjustments for stock splits, stock dividends, and reclassifications, pursuant to the amended and restated limited liability company agreement of Opco and have no expiration date. The shares of Class B Common Stock (i) confer no incidents of economic ownership on the holders thereof and (ii) only confer ten-to-one voting rights on the holders thereof.

F3 · ownership.nature: TA Associates, L.P. is the ultimate general partner of each of XI DO, SDF III Feeder, Atlantic and Pacific VII-B, XI DO AIV, SDF III DO, Atlantic and Pacific VII-A, Investors IV, AP VII-B, SDF III DO AIV II and XI DO AIV II (collectively, the "TA Associates Funds"). Investment and voting control of the TA Associates Funds is held by TA Associates, L.P. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest in such securities, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

F5 · ownership.nature: Securities are held by TA SDF III DO AIV II, L.P. ("SDF III DO AIV II").

SEC source: 0001209191-21-034224 · doc4.xml · derivative · entry 10

Mironov Jason · CIK 0001810831 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 2,991,740

Underlying: Class A Common Stock · 257,185 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F8 · derivative.exercise_price: Units of Opco represent limited liability company units of Opco and a corresponding number of shares of Class B Common Stock of the Issuer, which together are exchangeable at the option of the holder on a one-for-one basis for shares of Class A Common Stock of the Issuer, subject to customary conversion rate adjustments for stock splits, stock dividends, and reclassifications, pursuant to the amended and restated limited liability company agreement of Opco and have no expiration date. The shares of Class B Common Stock (i) confer no incidents of economic ownership on the holders thereof and (ii) only confer ten-to-one voting rights on the holders thereof.

F8 · derivative.exercise_date: Units of Opco represent limited liability company units of Opco and a corresponding number of shares of Class B Common Stock of the Issuer, which together are exchangeable at the option of the holder on a one-for-one basis for shares of Class A Common Stock of the Issuer, subject to customary conversion rate adjustments for stock splits, stock dividends, and reclassifications, pursuant to the amended and restated limited liability company agreement of Opco and have no expiration date. The shares of Class B Common Stock (i) confer no incidents of economic ownership on the holders thereof and (ii) only confer ten-to-one voting rights on the holders thereof.

F8 · derivative.expiration_date: Units of Opco represent limited liability company units of Opco and a corresponding number of shares of Class B Common Stock of the Issuer, which together are exchangeable at the option of the holder on a one-for-one basis for shares of Class A Common Stock of the Issuer, subject to customary conversion rate adjustments for stock splits, stock dividends, and reclassifications, pursuant to the amended and restated limited liability company agreement of Opco and have no expiration date. The shares of Class B Common Stock (i) confer no incidents of economic ownership on the holders thereof and (ii) only confer ten-to-one voting rights on the holders thereof.

F3 · ownership.nature: TA Associates, L.P. is the ultimate general partner of each of XI DO, SDF III Feeder, Atlantic and Pacific VII-B, XI DO AIV, SDF III DO, Atlantic and Pacific VII-A, Investors IV, AP VII-B, SDF III DO AIV II and XI DO AIV II (collectively, the "TA Associates Funds"). Investment and voting control of the TA Associates Funds is held by TA Associates, L.P. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest in such securities, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

F4 · ownership.nature: Securities are held by TA AP VII-B DO Subsidiary Partnership, L.P. ("AP VII-B").

SEC source: 0001209191-21-034224 · doc4.xml · derivative · entry 9

Mironov Jason · CIK 0001810831 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 3,332,460

Underlying: Class A Common Stock · 288,841 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F8 · derivative.exercise_price: Units of Opco represent limited liability company units of Opco and a corresponding number of shares of Class B Common Stock of the Issuer, which together are exchangeable at the option of the holder on a one-for-one basis for shares of Class A Common Stock of the Issuer, subject to customary conversion rate adjustments for stock splits, stock dividends, and reclassifications, pursuant to the amended and restated limited liability company agreement of Opco and have no expiration date. The shares of Class B Common Stock (i) confer no incidents of economic ownership on the holders thereof and (ii) only confer ten-to-one voting rights on the holders thereof.

F8 · derivative.exercise_date: Units of Opco represent limited liability company units of Opco and a corresponding number of shares of Class B Common Stock of the Issuer, which together are exchangeable at the option of the holder on a one-for-one basis for shares of Class A Common Stock of the Issuer, subject to customary conversion rate adjustments for stock splits, stock dividends, and reclassifications, pursuant to the amended and restated limited liability company agreement of Opco and have no expiration date. The shares of Class B Common Stock (i) confer no incidents of economic ownership on the holders thereof and (ii) only confer ten-to-one voting rights on the holders thereof.

F8 · derivative.expiration_date: Units of Opco represent limited liability company units of Opco and a corresponding number of shares of Class B Common Stock of the Issuer, which together are exchangeable at the option of the holder on a one-for-one basis for shares of Class A Common Stock of the Issuer, subject to customary conversion rate adjustments for stock splits, stock dividends, and reclassifications, pursuant to the amended and restated limited liability company agreement of Opco and have no expiration date. The shares of Class B Common Stock (i) confer no incidents of economic ownership on the holders thereof and (ii) only confer ten-to-one voting rights on the holders thereof.

F2 · ownership.nature: Securities are held by TA XI DO AIV II, L.P. ("XI DO AIV II").

F3 · ownership.nature: TA Associates, L.P. is the ultimate general partner of each of XI DO, SDF III Feeder, Atlantic and Pacific VII-B, XI DO AIV, SDF III DO, Atlantic and Pacific VII-A, Investors IV, AP VII-B, SDF III DO AIV II and XI DO AIV II (collectively, the "TA Associates Funds"). Investment and voting control of the TA Associates Funds is held by TA Associates, L.P. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest in such securities, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0001209191-21-034224 · doc4.xml · nonDerivative · entry 6

Mironov Jason · CIK 0001810831 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 0

F6 · kind: XI DO AIV II, SDF III DO AIV II and AP VII-B Subsidiary Partnership distributed these shares to one or more of their limited partners and to TA Associates XI GP, LP, TA Associates AP VII GP, LP and TA Associates SDF III GP, LP on a pro rata basis, for no consideration. On the same date, TA Associates XI GP, LP, TA Associates AP VII GP, LP and TA Associates SDF III GP, LP distributed, for no consideration, the shares received in the distribution to one or more of their partners, representing each such partner's pro rata interest in such shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-19 of the Securities and Exchange Act of 1934, as amended.

F7 · price: Shares of the Issuer's Class C Common Stock were converted on a one-for-one basis for shares of Class A Common Stock of the Issuer.

F3 · ownership.nature: TA Associates, L.P. is the ultimate general partner of each of XI DO, SDF III Feeder, Atlantic and Pacific VII-B, XI DO AIV, SDF III DO, Atlantic and Pacific VII-A, Investors IV, AP VII-B, SDF III DO AIV II and XI DO AIV II (collectively, the "TA Associates Funds"). Investment and voting control of the TA Associates Funds is held by TA Associates, L.P. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest in such securities, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

F5 · ownership.nature: Securities are held by TA SDF III DO AIV II, L.P. ("SDF III DO AIV II").

SEC source: 0001209191-21-034224 · doc4.xml · nonDerivative · entry 5

Mironov Jason · CIK 0001810831 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 0

F6 · kind: XI DO AIV II, SDF III DO AIV II and AP VII-B Subsidiary Partnership distributed these shares to one or more of their limited partners and to TA Associates XI GP, LP, TA Associates AP VII GP, LP and TA Associates SDF III GP, LP on a pro rata basis, for no consideration. On the same date, TA Associates XI GP, LP, TA Associates AP VII GP, LP and TA Associates SDF III GP, LP distributed, for no consideration, the shares received in the distribution to one or more of their partners, representing each such partner's pro rata interest in such shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-19 of the Securities and Exchange Act of 1934, as amended.

F7 · price: Shares of the Issuer's Class C Common Stock were converted on a one-for-one basis for shares of Class A Common Stock of the Issuer.

F3 · ownership.nature: TA Associates, L.P. is the ultimate general partner of each of XI DO, SDF III Feeder, Atlantic and Pacific VII-B, XI DO AIV, SDF III DO, Atlantic and Pacific VII-A, Investors IV, AP VII-B, SDF III DO AIV II and XI DO AIV II (collectively, the "TA Associates Funds"). Investment and voting control of the TA Associates Funds is held by TA Associates, L.P. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest in such securities, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

F4 · ownership.nature: Securities are held by TA AP VII-B DO Subsidiary Partnership, L.P. ("AP VII-B").

SEC source: 0001209191-21-034224 · doc4.xml · nonDerivative · entry 4

Mironov Jason · CIK 0001810831 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 0

F6 · kind: XI DO AIV II, SDF III DO AIV II and AP VII-B Subsidiary Partnership distributed these shares to one or more of their limited partners and to TA Associates XI GP, LP, TA Associates AP VII GP, LP and TA Associates SDF III GP, LP on a pro rata basis, for no consideration. On the same date, TA Associates XI GP, LP, TA Associates AP VII GP, LP and TA Associates SDF III GP, LP distributed, for no consideration, the shares received in the distribution to one or more of their partners, representing each such partner's pro rata interest in such shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-19 of the Securities and Exchange Act of 1934, as amended.

F7 · price: Shares of the Issuer's Class C Common Stock were converted on a one-for-one basis for shares of Class A Common Stock of the Issuer.

F2 · ownership.nature: Securities are held by TA XI DO AIV II, L.P. ("XI DO AIV II").

F3 · ownership.nature: TA Associates, L.P. is the ultimate general partner of each of XI DO, SDF III Feeder, Atlantic and Pacific VII-B, XI DO AIV, SDF III DO, Atlantic and Pacific VII-A, Investors IV, AP VII-B, SDF III DO AIV II and XI DO AIV II (collectively, the "TA Associates Funds"). Investment and voting control of the TA Associates Funds is held by TA Associates, L.P. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest in such securities, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0001209191-21-034224 · doc4.xml · nonDerivative · entry 3

Mironov Jason · CIK 0001810831 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 5,435

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Units of ZoomInfo Holdings LLC ("Opco"), which represent limited liability company units of Opco and a corresponding number of shares of Class B Common Stock of the Issuer, were exchanged on a one-for-one basis for shares of Class A Common Stock of the Issuer pursuant to the amended and restated limited liability company agreement of Opco.

F3 · ownership.nature: TA Associates, L.P. is the ultimate general partner of each of XI DO, SDF III Feeder, Atlantic and Pacific VII-B, XI DO AIV, SDF III DO, Atlantic and Pacific VII-A, Investors IV, AP VII-B, SDF III DO AIV II and XI DO AIV II (collectively, the "TA Associates Funds"). Investment and voting control of the TA Associates Funds is held by TA Associates, L.P. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest in such securities, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

F5 · ownership.nature: Securities are held by TA SDF III DO AIV II, L.P. ("SDF III DO AIV II").

SEC source: 0001209191-21-034224 · doc4.xml · nonDerivative · entry 2

Mironov Jason · CIK 0001810831 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 257,185

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Units of ZoomInfo Holdings LLC ("Opco"), which represent limited liability company units of Opco and a corresponding number of shares of Class B Common Stock of the Issuer, were exchanged on a one-for-one basis for shares of Class A Common Stock of the Issuer pursuant to the amended and restated limited liability company agreement of Opco.

F3 · ownership.nature: TA Associates, L.P. is the ultimate general partner of each of XI DO, SDF III Feeder, Atlantic and Pacific VII-B, XI DO AIV, SDF III DO, Atlantic and Pacific VII-A, Investors IV, AP VII-B, SDF III DO AIV II and XI DO AIV II (collectively, the "TA Associates Funds"). Investment and voting control of the TA Associates Funds is held by TA Associates, L.P. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest in such securities, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

F4 · ownership.nature: Securities are held by TA AP VII-B DO Subsidiary Partnership, L.P. ("AP VII-B").

SEC source: 0001209191-21-034224 · doc4.xml · nonDerivative · entry 1

Mironov Jason · CIK 0001810831 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 288,841

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Units of ZoomInfo Holdings LLC ("Opco"), which represent limited liability company units of Opco and a corresponding number of shares of Class B Common Stock of the Issuer, were exchanged on a one-for-one basis for shares of Class A Common Stock of the Issuer pursuant to the amended and restated limited liability company agreement of Opco.

F2 · ownership.nature: Securities are held by TA XI DO AIV II, L.P. ("XI DO AIV II").

F3 · ownership.nature: TA Associates, L.P. is the ultimate general partner of each of XI DO, SDF III Feeder, Atlantic and Pacific VII-B, XI DO AIV, SDF III DO, Atlantic and Pacific VII-A, Investors IV, AP VII-B, SDF III DO AIV II and XI DO AIV II (collectively, the "TA Associates Funds"). Investment and voting control of the TA Associates Funds is held by TA Associates, L.P. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest in such securities, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0001209191-21-034223 · doc4.xml · derivative · entry 13

Crockett Todd · CIK 0001356054 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 62,852

Underlying: Class A Common Stock · 5,435 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F9 · derivative.exercise_price: Units of Opco represent limited liability company units of Opco and a corresponding number of shares of Class B Common Stock of the Issuer, which together are exchangeable at the option of the holder on a one-for-one basis for shares of Class A Common Stock of the Issuer, subject to customary conversion rate adjustments for stock splits, stock dividends, and reclassifications, pursuant to the amended and restated limited liability company agreement of Opco and have no expiration date. The shares of Class B Common Stock (i) confer no incidents of economic ownership on the holders thereof and (ii) only confer ten-to-one voting rights on the holders thereof.

F9 · derivative.exercise_date: Units of Opco represent limited liability company units of Opco and a corresponding number of shares of Class B Common Stock of the Issuer, which together are exchangeable at the option of the holder on a one-for-one basis for shares of Class A Common Stock of the Issuer, subject to customary conversion rate adjustments for stock splits, stock dividends, and reclassifications, pursuant to the amended and restated limited liability company agreement of Opco and have no expiration date. The shares of Class B Common Stock (i) confer no incidents of economic ownership on the holders thereof and (ii) only confer ten-to-one voting rights on the holders thereof.

F9 · derivative.expiration_date: Units of Opco represent limited liability company units of Opco and a corresponding number of shares of Class B Common Stock of the Issuer, which together are exchangeable at the option of the holder on a one-for-one basis for shares of Class A Common Stock of the Issuer, subject to customary conversion rate adjustments for stock splits, stock dividends, and reclassifications, pursuant to the amended and restated limited liability company agreement of Opco and have no expiration date. The shares of Class B Common Stock (i) confer no incidents of economic ownership on the holders thereof and (ii) only confer ten-to-one voting rights on the holders thereof.

F3 · ownership.nature: TA Associates, L.P. is the ultimate general partner of each of XI DO, SDF III Feeder, Atlantic and Pacific VII-B, XI DO AIV, SDF III DO, Atlantic and Pacific VII-A, Investors IV, AP VII-B, SDF III DO AIV II and XI DO AIV II (collectively, the "TA Associates Funds"). Investment and voting control of the TA Associates Funds is held by TA Associates, L.P. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest in such securities, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

F5 · ownership.nature: Securities are held by TA SDF III DO AIV II, L.P. ("SDF III DO AIV II").

SEC source: 0001209191-21-034223 · doc4.xml · derivative · entry 12

Crockett Todd · CIK 0001356054 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 2,991,740

Underlying: Class A Common Stock · 257,185 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F9 · derivative.exercise_price: Units of Opco represent limited liability company units of Opco and a corresponding number of shares of Class B Common Stock of the Issuer, which together are exchangeable at the option of the holder on a one-for-one basis for shares of Class A Common Stock of the Issuer, subject to customary conversion rate adjustments for stock splits, stock dividends, and reclassifications, pursuant to the amended and restated limited liability company agreement of Opco and have no expiration date. The shares of Class B Common Stock (i) confer no incidents of economic ownership on the holders thereof and (ii) only confer ten-to-one voting rights on the holders thereof.

F9 · derivative.exercise_date: Units of Opco represent limited liability company units of Opco and a corresponding number of shares of Class B Common Stock of the Issuer, which together are exchangeable at the option of the holder on a one-for-one basis for shares of Class A Common Stock of the Issuer, subject to customary conversion rate adjustments for stock splits, stock dividends, and reclassifications, pursuant to the amended and restated limited liability company agreement of Opco and have no expiration date. The shares of Class B Common Stock (i) confer no incidents of economic ownership on the holders thereof and (ii) only confer ten-to-one voting rights on the holders thereof.

F9 · derivative.expiration_date: Units of Opco represent limited liability company units of Opco and a corresponding number of shares of Class B Common Stock of the Issuer, which together are exchangeable at the option of the holder on a one-for-one basis for shares of Class A Common Stock of the Issuer, subject to customary conversion rate adjustments for stock splits, stock dividends, and reclassifications, pursuant to the amended and restated limited liability company agreement of Opco and have no expiration date. The shares of Class B Common Stock (i) confer no incidents of economic ownership on the holders thereof and (ii) only confer ten-to-one voting rights on the holders thereof.

F3 · ownership.nature: TA Associates, L.P. is the ultimate general partner of each of XI DO, SDF III Feeder, Atlantic and Pacific VII-B, XI DO AIV, SDF III DO, Atlantic and Pacific VII-A, Investors IV, AP VII-B, SDF III DO AIV II and XI DO AIV II (collectively, the "TA Associates Funds"). Investment and voting control of the TA Associates Funds is held by TA Associates, L.P. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest in such securities, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

F4 · ownership.nature: Securities are held by TA AP VII-B DO Subsidiary Partnership, L.P. ("AP VII-B").

SEC source: 0001209191-21-034223 · doc4.xml · derivative · entry 11

Crockett Todd · CIK 0001356054 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 3,332,460

Underlying: Class A Common Stock · 288,841 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F9 · derivative.exercise_price: Units of Opco represent limited liability company units of Opco and a corresponding number of shares of Class B Common Stock of the Issuer, which together are exchangeable at the option of the holder on a one-for-one basis for shares of Class A Common Stock of the Issuer, subject to customary conversion rate adjustments for stock splits, stock dividends, and reclassifications, pursuant to the amended and restated limited liability company agreement of Opco and have no expiration date. The shares of Class B Common Stock (i) confer no incidents of economic ownership on the holders thereof and (ii) only confer ten-to-one voting rights on the holders thereof.

F9 · derivative.exercise_date: Units of Opco represent limited liability company units of Opco and a corresponding number of shares of Class B Common Stock of the Issuer, which together are exchangeable at the option of the holder on a one-for-one basis for shares of Class A Common Stock of the Issuer, subject to customary conversion rate adjustments for stock splits, stock dividends, and reclassifications, pursuant to the amended and restated limited liability company agreement of Opco and have no expiration date. The shares of Class B Common Stock (i) confer no incidents of economic ownership on the holders thereof and (ii) only confer ten-to-one voting rights on the holders thereof.

F9 · derivative.expiration_date: Units of Opco represent limited liability company units of Opco and a corresponding number of shares of Class B Common Stock of the Issuer, which together are exchangeable at the option of the holder on a one-for-one basis for shares of Class A Common Stock of the Issuer, subject to customary conversion rate adjustments for stock splits, stock dividends, and reclassifications, pursuant to the amended and restated limited liability company agreement of Opco and have no expiration date. The shares of Class B Common Stock (i) confer no incidents of economic ownership on the holders thereof and (ii) only confer ten-to-one voting rights on the holders thereof.

F2 · ownership.nature: Securities are held by TA XI DO AIV II, L.P. ("XI DO AIV II").

F3 · ownership.nature: TA Associates, L.P. is the ultimate general partner of each of XI DO, SDF III Feeder, Atlantic and Pacific VII-B, XI DO AIV, SDF III DO, Atlantic and Pacific VII-A, Investors IV, AP VII-B, SDF III DO AIV II and XI DO AIV II (collectively, the "TA Associates Funds"). Investment and voting control of the TA Associates Funds is held by TA Associates, L.P. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest in such securities, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0001209191-21-034223 · doc4.xml · nonDerivative · entry 6

Crockett Todd · CIK 0001356054 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 0

F6 · kind: XI DO AIV II, SDF III DO AIV II and AP VII-B Subsidiary Partnership distributed these shares to one or more of their limited partners and to TA Associates XI GP, LP, TA Associates AP VII GP, LP and TA Associates SDF III GP, LP on a pro rata basis, for no consideration. On the same date, TA Associates XI GP, LP, TA Associates AP VII GP, LP and TA Associates SDF III GP, LP distributed, for no consideration, the shares received in the distribution to one or more of their limited partners, representing each such partner's pro rata interest in such shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-19 of the Securities and Exchange Act of 1934, as amended.

F7 · price: Shares of the Issuer's Class C Common Stock were converted on a one-for-one basis for shares of Class A Common Stock of the Issuer.

F3 · ownership.nature: TA Associates, L.P. is the ultimate general partner of each of XI DO, SDF III Feeder, Atlantic and Pacific VII-B, XI DO AIV, SDF III DO, Atlantic and Pacific VII-A, Investors IV, AP VII-B, SDF III DO AIV II and XI DO AIV II (collectively, the "TA Associates Funds"). Investment and voting control of the TA Associates Funds is held by TA Associates, L.P. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest in such securities, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

F5 · ownership.nature: Securities are held by TA SDF III DO AIV II, L.P. ("SDF III DO AIV II").

SEC source: 0001209191-21-034223 · doc4.xml · nonDerivative · entry 5

Crockett Todd · CIK 0001356054 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 0

F6 · kind: XI DO AIV II, SDF III DO AIV II and AP VII-B Subsidiary Partnership distributed these shares to one or more of their limited partners and to TA Associates XI GP, LP, TA Associates AP VII GP, LP and TA Associates SDF III GP, LP on a pro rata basis, for no consideration. On the same date, TA Associates XI GP, LP, TA Associates AP VII GP, LP and TA Associates SDF III GP, LP distributed, for no consideration, the shares received in the distribution to one or more of their limited partners, representing each such partner's pro rata interest in such shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-19 of the Securities and Exchange Act of 1934, as amended.

F7 · price: Shares of the Issuer's Class C Common Stock were converted on a one-for-one basis for shares of Class A Common Stock of the Issuer.

F3 · ownership.nature: TA Associates, L.P. is the ultimate general partner of each of XI DO, SDF III Feeder, Atlantic and Pacific VII-B, XI DO AIV, SDF III DO, Atlantic and Pacific VII-A, Investors IV, AP VII-B, SDF III DO AIV II and XI DO AIV II (collectively, the "TA Associates Funds"). Investment and voting control of the TA Associates Funds is held by TA Associates, L.P. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest in such securities, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

F4 · ownership.nature: Securities are held by TA AP VII-B DO Subsidiary Partnership, L.P. ("AP VII-B").

SEC source: 0001209191-21-034223 · doc4.xml · nonDerivative · entry 4

Crockett Todd · CIK 0001356054 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 0

F6 · kind: XI DO AIV II, SDF III DO AIV II and AP VII-B Subsidiary Partnership distributed these shares to one or more of their limited partners and to TA Associates XI GP, LP, TA Associates AP VII GP, LP and TA Associates SDF III GP, LP on a pro rata basis, for no consideration. On the same date, TA Associates XI GP, LP, TA Associates AP VII GP, LP and TA Associates SDF III GP, LP distributed, for no consideration, the shares received in the distribution to one or more of their limited partners, representing each such partner's pro rata interest in such shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-19 of the Securities and Exchange Act of 1934, as amended.

F7 · price: Shares of the Issuer's Class C Common Stock were converted on a one-for-one basis for shares of Class A Common Stock of the Issuer.

F2 · ownership.nature: Securities are held by TA XI DO AIV II, L.P. ("XI DO AIV II").

F3 · ownership.nature: TA Associates, L.P. is the ultimate general partner of each of XI DO, SDF III Feeder, Atlantic and Pacific VII-B, XI DO AIV, SDF III DO, Atlantic and Pacific VII-A, Investors IV, AP VII-B, SDF III DO AIV II and XI DO AIV II (collectively, the "TA Associates Funds"). Investment and voting control of the TA Associates Funds is held by TA Associates, L.P. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest in such securities, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0001209191-21-034223 · doc4.xml · nonDerivative · entry 3

Crockett Todd · CIK 0001356054 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 5,435

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Units of ZoomInfo Holdings LLC ("Opco"), which represent limited liability company units of Opco and a corresponding number of shares of Class B Common Stock of the Issuer, were exchanged on a one-for-one basis for shares of Class A Common Stock of the Issuer pursuant to the amended and restated limited liability company agreement of Opco.

F3 · ownership.nature: TA Associates, L.P. is the ultimate general partner of each of XI DO, SDF III Feeder, Atlantic and Pacific VII-B, XI DO AIV, SDF III DO, Atlantic and Pacific VII-A, Investors IV, AP VII-B, SDF III DO AIV II and XI DO AIV II (collectively, the "TA Associates Funds"). Investment and voting control of the TA Associates Funds is held by TA Associates, L.P. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest in such securities, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

F5 · ownership.nature: Securities are held by TA SDF III DO AIV II, L.P. ("SDF III DO AIV II").

SEC source: 0001209191-21-034223 · doc4.xml · nonDerivative · entry 2

Crockett Todd · CIK 0001356054 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 257,185

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Units of ZoomInfo Holdings LLC ("Opco"), which represent limited liability company units of Opco and a corresponding number of shares of Class B Common Stock of the Issuer, were exchanged on a one-for-one basis for shares of Class A Common Stock of the Issuer pursuant to the amended and restated limited liability company agreement of Opco.

F3 · ownership.nature: TA Associates, L.P. is the ultimate general partner of each of XI DO, SDF III Feeder, Atlantic and Pacific VII-B, XI DO AIV, SDF III DO, Atlantic and Pacific VII-A, Investors IV, AP VII-B, SDF III DO AIV II and XI DO AIV II (collectively, the "TA Associates Funds"). Investment and voting control of the TA Associates Funds is held by TA Associates, L.P. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest in such securities, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

F4 · ownership.nature: Securities are held by TA AP VII-B DO Subsidiary Partnership, L.P. ("AP VII-B").

SEC source: 0001209191-21-034223 · doc4.xml · nonDerivative · entry 1

Crockett Todd · CIK 0001356054 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 288,841

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Units of ZoomInfo Holdings LLC ("Opco"), which represent limited liability company units of Opco and a corresponding number of shares of Class B Common Stock of the Issuer, were exchanged on a one-for-one basis for shares of Class A Common Stock of the Issuer pursuant to the amended and restated limited liability company agreement of Opco.

F2 · ownership.nature: Securities are held by TA XI DO AIV II, L.P. ("XI DO AIV II").

F3 · ownership.nature: TA Associates, L.P. is the ultimate general partner of each of XI DO, SDF III Feeder, Atlantic and Pacific VII-B, XI DO AIV, SDF III DO, Atlantic and Pacific VII-A, Investors IV, AP VII-B, SDF III DO AIV II and XI DO AIV II (collectively, the "TA Associates Funds"). Investment and voting control of the TA Associates Funds is held by TA Associates, L.P. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest in such securities, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.