X0306 4 2020-04-27 0001758730 Tradeweb Markets Inc. TW 0001278872 WARSHAW ROBERT J TRADEWEB MARKETS INC. 1177 AVENUE OF THE AMERICAS NEW YORK NY 10036 true Chief Financial Officer Class A common stock 2020-04-27 4 D 0 36471 48.79 D 65115 D This amount represents the $50.25 per-share price at which shares of the issuer's Class A common stock (the "Class A Common Stock") were sold in a public offering of the Class A Common Stock, less the underwriters' discount of $1.46 per share. This amount includes (i) 24,628 unvested restricted stock units ("RSUs") in respect of Class A Common Stock which are scheduled to vest on January 1, 2021, (ii) 22,004 unvested RSUs in respect of Class A Common Stock which are scheduled to vest on January 1, 2022, and (iii) 10,483 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, in each case subject to the reporting person's continued employment through the applicable vesting date. /s/ Scott Zucker, Attorney-in-Fact for Robert Warshaw 2020-04-28