Filed Pursuant to Rule 424(b)(3)
Registration No. 333-250905

Prospectus Supplement No. 1
(to Prospectus dated November 27, 2020)
ZoomInfo Technologies Inc.
Class A Common Stock
Issuable Upon Exchange or Settlement of
Outstanding Equity Interests From Time to Time

This Prospectus Supplement No. 1, dated December 4, 2020 (this “Supplement”), is being filed to update, modify, amend and supplement the information previously included in our prospectus, dated November 27, 2020 (the “Prospectus”), with the information contained in the Current Report on Form 8-K filed with the Securities and Exchange Commission (the “SEC”) by ZoomInfo Technologies Inc. (the “Company”) on December 4, 2020 (the “Report”). Any document, exhibit or information contained in the Report that has been deemed furnished and not filed in accordance with SEC rules shall not be included in this Supplement. We have attached the Report to this Supplement. This Supplement is not complete without, and may not be delivered or used except in connection with, the Prospectus, including all amendments and supplements thereto.

Investing in shares of our Class A common stock involves risks. See “Risk Factors” beginning on 29 of the Prospectus dated November 27, 2020.
Neither the Securities and Exchange Commission nor any other regulatory body has approved or disapproved of these securities or passed upon the accuracy or adequacy of this prospectus. Any representation to the contrary is a criminal offense.

The date of this Prospectus Supplement is December 4, 2020.

Washington, D.C. 20549
Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934
Date of Report (Date of earliest event reported): December 1, 2020
ZoomInfo Technologies Inc.
(Exact name of registrant as specified in its charter)
(State or other jurisdiction
of incorporation)
(Commission File Number)

(IRS Employer Identification No.)
805 Broadway Street, Suite 900, Vancouver, Washington 98660
(Address of principal executive offices) (Zip Code)
Registrant’s telephone number, including area code: (800) 914-1220
Not applicable
(Former name or former address, if changed since last report.)
Check the appropriate box below if the Form 8−K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
☐   Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐   Soliciting material pursuant to Rule 14a−12 under the Exchange Act (17 CFR 240.14a−12)
☐   Pre−commencement communications pursuant to Rule 14d−2(b) under the Exchange Act (17 CFR 240.14d−2(b))
☐   Pre−commencement communications pursuant to Rule 13e−4(c) under the Exchange Act (17 CFR 240.13e− 4(c))
Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading SymbolName of each exchange on which registered
Class A common stock, par value $0.01 per shareZIThe Nasdaq Stock Market LLC
Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).
Emerging growth company     
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.

Item 8.01          Other Events.
On December 1, 2020, ZoomInfo Technologies Inc. (the “Company”) entered into an underwriting agreement with certain selling stockholders (the “Selling Stockholders”) and J.P. Morgan Securities LLC and Morgan Stanley & Co. LLC., as representatives of the several underwriters named therein (the “Underwriters”), relating to an offering (the “Secondary Offering”) of 12,500,000 shares of the Company's Class A common stock, par value $0.01 per share ("Class A Common Stock"), pursuant to the Company’s Registration Statement on Form S-1 (File No. 333-251009) at a public offering price of $45.00 per share. The Company did not sell any shares in the Secondary Offering. All of the shares are being sold by the Selling Stockholders, and the Underwriters agreed to purchase the shares from the Selling Stockholders at a price of $43.875 per share (the public offering price net of underwriting discounts).
The Selling Stockholders have granted the Underwriters a 30-day over-allotment option from the date of the underwriting agreement to purchase up to 1,875,000 additional shares of Class A Common Stock. On December 3, 2020, the Underwriters exercised in full their 30-day over-allotment option to purchase 1,875,000 additional shares of Class A Common Stock.
On December 4, 2020, the Company, the Selling Stockholders and the Underwriters completed the Secondary Offering. The Selling Stockholders received all of the net proceeds from the Secondary Offering.

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
ZoomInfo Technologies Inc.
Date: December 4, 2020
By:/s/ Anthony Stark
Name:Anthony Stark
Title:General Counsel and Corporate Secretary