X0306 4 2022-03-18 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 2022-03-18 4 F 0 2371 89.88 D 65117 D Class A common stock 2022-03-18 4 A 0 13 0 A 65130 D Represents shares withheld by the issuer to satisfy the tax withholding obligation associated with the settlement of restricted stock units ("RSUs") in respect of the issuer's Class A common stock ("Class A Common Stock") held by the reporting person. This amount includes (i) 4,288 unvested RSUs in respect of Class A Common Stock which are scheduled to vest on March 17, 2023, (ii) 25,726 unvested RSUs in respect of Class A Common Stock which are scheduled to vest on January 1, 2023, (iii) 6,742 unvested RSUs in respect of Class A Common Stock which are scheduled to vest in equal installments on each of March 15, 2023 and March 15, 2024, (iv) 14,832 unvested RSUs in respect of Class A Common Stock which are scheduled to vest on January 1, 2024, and (v) 9,613 unvested RSUs in respect of Class A Common Stock which are scheduled to vest in equal installments on the first, second and third anniversaries of March 15, 2022, in each case subject to the reporting person's continued employment through the applicable vesting date. Represents shares of Class A Common Stock acquired in connection with the settlement of certain dividend equivalent rights (the "DERs"). The DERs were granted in connection with previously awarded RSUs, and settled in shares of Class A Common Stock in connection with the settlement of the RSUs to which they relate. /s/ Scott Zucker, Attorney-in-Fact for Justin Peterson 2022-03-21