X0306 4 2021-11-23 0001794515 ZoomInfo Technologies Inc. ZI 0001813992 DO Holdings (WA), LLC C/O ZOOMINFO TECHNOLOGIES INC. 805 BROADWAY STREET, SUITE 900 VANCOUVER WA 98660 1 Class A Common Stock 2021-11-23 4 S 0 500.0000 73.5000 D 15803857.0000 D Class A Common Stock 2021-11-23 4 S 0 30978.0000 69.8854 D 15772879.0000 D Class A Common Stock 2021-11-23 4 S 0 47772.0000 72.0463 D 15725107.0000 D Class A Common Stock 2021-11-23 4 S 0 47948.0000 70.7251 D 15677159.0000 D Class A Common Stock 2021-11-23 4 S 0 90870.0000 72.8960 D 15586289.0000 D Class A Common Stock 2021-11-23 4 S 0 107295.0000 68.7687 D 15478994.0000 D Class A Common Stock 2021-11-23 4 S 0 454494.0000 67.0135 D 15024500.0000 D Class A Common Stock 2021-11-23 4 S 0 520143.0000 67.9148 D 14504357.0000 D 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 September 15, 2021. DO Holdings is substantially owned by Henry Schuck and Kirk Brown. The transactions reported in this Form 4 were for the benefit of Henry Schuck. The price in Column 4 is a weighted average sale price. The prices actually received ranged from $69.35 to $70.29. The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range. The price in Column 4 is a weighted average sale price. The prices actually received ranged from $71.45 to $72.44. The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range. The price in Column 4 is a weighted average sale price. The prices actually received ranged from $70.35 to $71.25. The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range. The price in Column 4 is a weighted average sale price. The prices actually received ranged from $72.45 to $73.44. The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range. The price in Column 4 is a weighted average sale price. The prices actually received ranged from $68.35 to $69.34. The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range. The price in Column 4 is a weighted average sale price. The prices actually received ranged from $66.35 to $67.34. The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range. The price in Column 4 is a weighted average sale price. The prices actually received ranged from $67.35 to $68.34. The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range. /s/ Michael Christopher Hall, as Attorney-in-Fact 2021-11-26