ZoomInfo Technologies Inc.

Rule 10b5-1 Trading Plans

Except as described in the two immediately following paragraphs, during the Company’s fiscal quarter ended December 31, 2025, none of the Company’s directors or officers (as defined in Rule 16a-1(f) under the Exchange Act)adopted orterminated a trading arrangement intended to satisfy the affirmative conditions of Rule 10b5-1(c) of the Exchange Act (such arrangement, a “Rule 10b5-1 trading arrangement”).

On December 12, 2025, Ashley McGrane, Executive Vice President, General Counsel and Corporate Secretary of the Company, adopted a Rule 10b5-1 trading arrangement. The duration of the Rule 10b5-1 trading arrangement commences on February 18, 2026, and ends on November 5, 2026. The Rule 10b5-1 trading arrangement provides for the sale of a portion of the net shares acquired by Ms. McGrane (net of shares withheld to cover the recipient’s tax liability in connection with vesting) resulting from the vesting of up to a maximum of 99,964 previously granted restricted stock units. The volume of sales will be determined, in part, based on pricing triggers outlined in the Rule 10b5-1 trading arrangement, with a maximum potential sale under the plan of up to 25% of the vested shares from such awards during the term of the plan. Ms. McGrane’s Rule 10b5-1 trading arrangement was entered into during an open insider trading window and is intended to satisfy the affirmative defense of Rule 10b5-1(c) under the Exchange Act and the Company’s policies regarding insider transactions.

On November 7, 2025, James Roth, Chief Revenue Officer of the Company, adopted a Rule 10b5-1 trading arrangement. The duration of the Rule 10b5-1 trading arrangement commences on February 18, 2026, and ends on December 31, 2026. The Rule 10b5-1 trading arrangement provides for the sale of a portion of the net shares acquired by Mr. Roth (net of shares withheld to cover the recipient’s tax liability in connection with vesting) resulting from the vesting of up to a maximum of 455,477 previously granted restricted stock units, which includes 115,000 performance-based RSUs that could vest subject to the achievement of performance conditions at the target level. The volume of sales will be determined, in part, based on pricing triggers outlined in the Rule 10b5-1 trading arrangement, with a maximum potential sale under the plan of up to 50% of the vested shares from such awards during the term of the plan. Mr. Roth’s Rule 10b5-1 trading arrangement was entered into during an open insider trading window and is intended to satisfy the affirmative defense of Rule 10b5-1(c) under the Exchange Act and the Company’s policies regarding insider transactions.