X0306 4 2020-10-09 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 2020-10-09 4 M 0 15800 20.59 A 108085 D Class A common stock 2020-10-09 4 S 0 15800 59.6479 D 92285 D Class A common stock 2020-10-12 4 M 0 9200 20.59 A 101485 D Class A common stock 2020-10-12 4 S 0 9200 59.6323 D 92285 D Stock Option (Right to Buy) 20.59 2020-10-09 4 M 0 15800 0 D 2028-10-26 Class A common stock 15800 149900 D Stock Option (Right to Buy) 20.59 2020-10-12 4 M 0 9200 0 D 2028-10-26 Class A common stock 9200 140700 D This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 14, 2020. 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, (ii) 35,204 unvested RSUs in respect of Class A Common Stock which are scheduled to vest on January 1, 2022, 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, in each case subject to the reporting person's continued employment through the applicable vesting date. The price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $59.50 to $59.99, inclusive. The reporting person undertakes to provide the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes 3 and 4 to this Form 4. The price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $59.50 to $59.84, inclusive. The option is fully vested and exercisable as of the date hereof. /s/ Scott Zucker, Attorney-in-Fact for Justin Peterson 2020-10-13