X0306 4 2020-03-23 0 0001758730 Tradeweb Markets Inc. TW 0001772250 Ganeles Scott TRADEWEB MARKETS INC. 1177 AVENUE OF THE AMERICAS NEW YORK NY 10036 1 0 0 0 Class A common stock 2020-03-23 4 A 0 2546 0.00 A 6250 D The reported transaction is an award of restricted stock units in respect of the issuer's Class A common stock. Subject to the reporting person's continued service as a director of the issuer through the vesting date, these restricted stock units are scheduled to vest on March 23, 2021 and settle in Class A common stock of the issuer within 30 days thereafter. This amount includes 2,546 unvested restricted stock units in respect of the issuer's Class A common stock as described in footnote 1 to this Form 4. /s/ Scott Ganeles 2020-03-25