X0306 4 2020-02-21 0001758730 Tradeweb Markets Inc. TW 0001771197 Zucker Scott TRADEWEB MARKETS INC. 1177 AVENUE OF THE AMERICAS NEW YORK NY 10036 true Chief Administrative Officer Class A common stock 2020-02-21 4 A 0 26404 0 A 53271 D Stock Option (Right to Buy) 20.59 2020-02-21 4 A 0 33212 0 A 2028-10-26 Class A common stock 33212 169274 D The reported transaction reflects the acquisition of performance-based restricted stock units ("RSUs") in respect of the issuer's Class A common stock ("Class A Common Stock") that were granted to the reporting person on February 13, 2019, subject to the achievement of certain performance goals in respect of calendar year 2019. Those performance goals were deemed achieved at the maximum performance level on February 21, 2020. These RSUs remain unvested and are scheduled to vest on January 1, 2022, subject to the reporting person's continued employment through such date. This amount includes (i) 22,867 unvested RSUs in respect of Class A Common Stock which are scheduled to vest on January 1, 2021, subject to the reporting person's continued employment through such date, and (ii) 26,404 unvested RSUs in respect of Class A Common Stock which are scheduled to vest on January 1, 2022, subject to the reporting person's continued employment through such date. The reported transaction reflects the acquisition of options that were granted to the reporting person on October 26, 2018, subject to the achievement of certain performance goals in respect of calendar year 2019 which were deemed achieved on February 21, 2020. This option is fully vested and exercisable as of the date hereof. This amount reflects the options reported on this Form 4 in addition to 136,062 options that were granted on October 26, 2018 and previously reported by the reporting person, all of which are currently vested and exercisable. /s/ Scott Zucker 2020-02-25