Form SCHEDULE 13D/A ZoomInfo Technologies Filed by: HighSage Ventures LLC

Item 4 of the Schedule 13D is hereby amended and supplemented as follows: General The Reporting Persons acquired the securities described in this Schedule 13D for investment purposes and they intend to review their investments in the Issuer on a continuing basis. Any actions the Reporting Persons might undertake will be dependent upon the Reporting Persons' review of numerous factors, including, but not limited to: an ongoing evaluation of the Issuer's business, financial condition, operations and prospects; price levels of the Issuer's securities; general market, industry and economic conditions; the relative attractiveness of alternative business and investment opportunities; and other future developments. The Reporting Persons may acquire additional (or potentially all) securities of the Issuer, or retain or sell all or a portion of the securities then held, in the open market or in privately negotiated transactions. The Reporting Persons may also enter into financial instruments or other agreements, such as the Cash-Settled Swap (as defined below), with institutional or other counterparties that would increase or decrease the Reporting Persons' economic exposure with respect to their investment in the Issuer, which instruments or agreements may or may not affect the Reporting Persons' beneficial ownership in securities of the Issuer. In addition, the Reporting Persons may engage in discussions with management, the Issuer's board of directors (the "Board"), other securityholders of the Issuer and other relevant parties, or encourage, cause or seek to cause the Issuer or such persons to consider or explore extraordinary corporate transactions, including, for example a merger, reorganization or other corporate transaction that could result in the de-listing or de-registration of the Common Stock; a transaction in which the Reporting Persons, either independently or as part of a consortium with one or more other sources of equity capital, would acquire additional (or potentially all) of the equity or assets of the Issuer; security offerings and/or stock repurchases by the Issuer; sales or acquisitions of assets or businesses; changes to the capitalization or dividend policy of the Issuer; or other material changes to the Issuer's business or corporate structure, including changes in management or the composition of the Board. To facilitate their consideration of such matters, the Reporting Persons may retain consultants and advisors and may enter into discussions with potential sources of capital and other third parties. The Reporting Persons may exchange information with any such persons pursuant to appropriate confidentiality or similar agreements. The Reporting Persons will likely take some or all of the foregoing steps at preliminary stages in their consideration of various possible courses of action before forming any intention to pursue any particular plan or direction. Other than as described above, the Reporting Persons do not currently have any plans or proposals that relate to, or would result in, any of the matters listed in Items 4(a)-(j) of Schedule 13D, although, depending on the factors discussed herein, the Reporting Persons may change their purpose or formulate different plans or proposals with respect thereto at any time.

Item 6 of the Schedule 13D is hereby amended and supplemented as follows: On June 12, 2026, entities managed directly or indirectly by the Reporting Persons (the "Swap Purchasers") entered into a cash-settled total return swap (the "Cash-Settled Swap") with an unaffiliated third-party financial institution, which provides the Swap Purchasers with economic exposure to an aggregate of 2,500,000 shares of Common Stock, and has a five-year maturity date and a reference price of $2.8088. The Cash-Settled Swap provides the Swap Purchasers with economic results that are comparable to the economic results of ownership, but does not provide the Swap Purchasers with the power to vote or direct the voting or dispose of or direct the disposition of the shares that are the subject of the Cash-Settled Swap. The Swap Purchasers also do not have the right to convert the foregoing Cash-Settled Swap into shares of Common Stock at any time. As such, the Reporting Persons and the Swap Purchasers disclaim beneficial ownership of the shares subject to the Cash-Settled Swap.