GTM · ZoomInfo Technologies Inc.

The price reported in Column 4 is a weighted average price. These shares were sold in two transactions at $4.1600 and $4.1602, respectively. 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.

The transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $4.00 to $4.010, 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.

The transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $3.560 to $3.575, 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.

Reflects shares withheld to cover the Reporting Person's tax liability in connection with the vesting of the restricted stock units reported herein.

Reflects shares withheld to cover the Reporting Person's tax liability in connection with the vesting of the restricted stock units reported herein.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

The Reporting Person received an original grant of restricted stock units on December 29, 2023, which vest in equal quarterly installments during the 36 months following November 1, 2024.

Reflects a distribution of Common Stock of ZoomInfo Technologies Inc. ("ZoomInfo") to one or more employees of ZoomInfo and its subsidiaries, including shares sold to cover such employees' tax liabilities in connection with the distribution of the securities reported herein.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

Reflects Phantom Units of HSKB Funds II, LLC ("HSKB Phantom Units") that upon vesting settled into shares of Common Stock on a one-for-one basis.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

The Reporting Person received an original grant of restricted stock units on October 22, 2024, which vest as follows: (a) 25% on November 1, 2025; and (b) the remainder of the award in equal quarterly installments during the 36 months following November 1, 2025.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

The Reporting Person received an original grant of restricted stock units on September 10, 2024, which vest in its entirety on the date that is 12 months from the date on which a permanent Chief Financial Officer is employed by the Issuer.

Reflects shares withheld to cover the Reporting Person's tax liability in connection with the vesting of the HSKB Phantom Units reported herein.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

The Reporting Person received an original grant of restricted stock units on July 31, 2025, which vests as follows: (a) 33% on August 1, 2026; and (b) the remainder of the award in equal quarterly installments during the 24 months following August 1, 2026.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

Reflects Phantom Units of HSKB Funds II, LLC ("HSKB Phantom Units") that upon vesting settled into shares of Common Stock on a one-for-one basis.

The Reporting Person received an original grant of HSKB Phantom Units on December 1, 2023, which vest in equal quarterly installments during the 24 months following November 1, 2024.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

The transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $2.91 to $3.03, 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.

The transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $2.93 to $3.02, 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.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

The Reporting Person received an original grant of restricted stock units on October 25, 2023, which vest in equal quarterly installments during the 36 months following October 1, 2024.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

The Reporting Person received an original grant of restricted stock units on May 29, 2026, which vests in equal quarterly installments during the 24 months following April 1, 2026.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

The Reporting Person received an original grant of restricted stock units on July 24, 2024, which vest as follows: (a) 25% on April 1, 2025; and (b) the remainder of the award in equal quarterly installments during the 36 months following April 1, 2025.

Reflects a distribution of Common Stock of ZoomInfo Technologies Inc. ("ZoomInfo") to one or more employees of ZoomInfo and its subsidiaries, including shares sold to cover such employees' tax liabilities in connection with the distribution of the securities reported herein.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

The Reporting Person received an original grant of restricted stock units on March 23, 2023, which vest in equal quarterly installments during the 30 months following October 1, 2024.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

The Reporting Person received an original grant of restricted stock units on March 23, 2023, which vest in equal quarterly installments during the 27 months following January 1, 2025.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

The Reporting Person received an original grant of restricted stock units on December 30, 2022, which vest in equal quarterly installments during the 27 months following October 1, 2024.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

The Reporting Person received an original grant of restricted stock units on March 26, 2024, which vest in equal quarterly installments during the 27 months following January 1, 2025.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

The Reporting Person received an original grant of restricted stock units on September 10, 2024, which vest as follows: (a) 25% on October 1, 2025; and (b) the remainder of the award in equal quarterly installments during the 36 months following October 1, 2025.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

The Reporting Person received an original grant of restricted stock units on March 26, 2024, which vest as follows: (a) 25% on April 1, 2025; and (b) the remainder of the award in equal quarterly installments during the 36 months following April 1, 2025.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

The Reporting Person received an original grant of restricted stock units on October 25, 2023, which vest in equal quarterly installments during the 33 months following January 1, 2025.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

The Reporting Person received an original grant of restricted stock units on May 30, 2025, which vests as follows: (a) 33% on April 1, 2026; and (b) the remainder of the award in equal quarterly installments during the 24 months following April 1, 2026.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

The Reporting Person received an original grant of restricted stock units on May 29, 2024, which vest as follows: (a) 25% on April 1, 2025; and (b) the remainder of the award in equal quarterly installments during the 36 months following April 1, 2025.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

The Reporting Person received an original grant of restricted stock units on October 25, 2023, which vest in equal quarterly installments during the 21 months following January 1, 2025.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

The Reporting Person received an original grant of restricted stock units on May 15, 2025, which vests as follows: (a) 33% on April 1, 2026; and (b) the remainder of the award in equal quarterly installments during the 24 months following April 1, 2026.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

The Reporting Person received an original grant of restricted stock units on March 23, 2023, which vest in equal quarterly installments during the 27 months following January 1, 2025.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

The Reporting Person received an original grant of restricted stock units on May 15, 2025, which vests as follows: (a) 33% on May 15, 2026; and (b) the remainder of the award in equal quarterly installments during the 24 months following May 15, 2026.

Reflects shares withheld to cover the Reporting Person's tax liability in connection with the vesting of the restricted stock units reported herein.

Reflects shares withheld to cover the Reporting Person's tax liability in connection with the vesting of the restricted stock units reported herein.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.