X0306 4 2022-02-24 0001758730 Tradeweb Markets Inc. TW 0001807231 Peterson Justin TRADEWEB MARKETS INC. 1177 AVENUE OF THE AMERICAS NEW YORK NY 10036 true Chief Technology Officer Class A common stock 2022-02-24 4 A 0 14832 0 A 61246 D Stock Option (Right to Buy) 20.59 2022-02-24 4 A 0 66426 0 A 2028-10-26 Class A common stock 66426 98550 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 March 15, 2021, subject to the achievement of certain performance goals in respect of calendar year 2021. Those performance goals were deemed achieved at the maximum performance level on February 24, 2022. These RSUs remain unvested and are scheduled to vest on January 1, 2024, subject to the reporting person's continued employment through such date. This amount includes (i) 8,575 unvested RSUs in respect of Class A Common Stock which are scheduled to vest in equal installments on each of March 17, 2022, and March 17, 2023, (ii) 25,726 unvested RSUs in respect of Class A Common Stock which are scheduled to vest on January 1, 2023, (iii) 10,113 unvested RSUs in respect of Class A Common Stock which are scheduled to vest in equal installments on each of the first, second and third anniversaries of March 15, 2021, and (iv) 14,832 unvested RSUs in respect of Class A Common Stock which are scheduled to vest on January 1, 2024, in each case subject to the reporting person's continued employment through the applicable vesting 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 2021 which were deemed achieved on February 24, 2022. The option is fully vested and exercisable as of the date hereof. This amount reflects the options reported on this Form 4 in addition to 32,124 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, Attorney-in-Fact for Justin Peterson 2022-02-25