X0206 3 2020-04-01 0 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 92285 D Stock Option (Right to Buy) 20.59 2028-10-26 Class A common stock 265700 D This amount includes (i) 42,218 unvested restricted stock units ("RSUs") in respect of the issuer's Class A common stock ("Class A Common Stock") which are scheduled to vest on January 1, 2021, subject to the reporting person's continued employment through such date, (ii) 35,204 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, and (iii) 12,863 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 17, 2020, subject to the reporting person's continued employment through each such date. Each RSU represents a contingent right to receive one share of Class A Common Stock. This option is fully vested and exercisable as of the date hereof. /s/ Scott Zucker, Attorney-in-Fact for Justin Peterson 2020-04-03