X0306 4 2021-12-03 0001758730 Tradeweb Markets Inc. TW 0001771195 Olesky Lee TRADEWEB MARKETS INC. 1177 AVENUE OF THE AMERICAS NEW YORK NY 10036 true true Chief Executive Officer Class A common stock 2021-12-03 4 M 0 146086 20.59 A 619543 D Class A common stock 2021-12-03 4 S 0 42681 94.9409 D 576862 D Class A common stock 2021-12-03 4 S 0 82845 95.5188 D 494017 D Class A common stock 2021-12-03 4 S 0 17333 96.6916 D 476684 D Class A common stock 2021-12-03 4 S 0 2903 97.5649 D 473781 D Class A common stock 2021-12-03 4 S 0 324 98.47 D 473457 D Class A common stock 2021-12-06 4 M 0 133624 20.59 A 607081 D Class A common stock 2021-12-06 4 S 0 16087 92.8736 D 590994 D Class A common stock 2021-12-06 4 S 0 113700 93.6544 D 477294 D Class A common stock 2021-12-06 4 S 0 3837 94.4964 D 473457 D Class A common stock 20000 I See footnote Stock Option (Right to Buy) 20.59 2021-12-03 4 M 0 146086 0 D 2028-10-26 Class A common stock 146086 133624 D Stock Option (Right to Buy) 20.59 2021-12-06 4 M 0 133624 0 D 2028-10-26 Class A common stock 133624 0 D This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2021. This amount includes (i) 298,526 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, 2022, (ii) 34,302 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, (iii) 102,906 unvested RSUs in respect of Class A Common Stock which are scheduled to vest on January 1, 2023, and (iv) 29,665 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, 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 $94.29 to $95.28, 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, 4, 5, 6, 7, 8 and 9 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 $95.29 to $96.25, inclusive. The price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $96.30 to $97.28, inclusive. The price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $97.30 to $97.83, inclusive. The price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $92.20 to $93.19, inclusive. The price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $93.20 to $94.14, inclusive. The price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $94.29 to $94.78, inclusive. The reporting person owns these securities through The Lee Olesky 2019 Family Trust U/A/D March 21, 2019 ("The Family Trust"). The reporting person and his wife, as the co-trustees of The Family Trust, share the power to vote and invest the securities, but each disclaims beneficial ownership of such securities except to the extent of his or her pecuniary interest therein. The option is fully vested and exercisable as of the date hereof. /s/ Scott Zucker, Attorney-in-Fact for Lee Olesky 2021-12-06