X0508 4 2026-02-10 0 0001758730 Tradeweb Markets Inc. TW 0002030787 Clack Amy TRADEWEB MARKETS INC. 245 PARK AVENUE NEW YORK NY 10167 0 1 0 0 CAO and CRO 1 Class A common stock 2026-02-10 4 S 0 838 114.68 D 17363 D Class A common stock 2026-02-10 4 S 0 839 114.68 D 16524 D This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025. This amount includes (i) 2,434 unvested restricted stock units ("RSUs") in respect of the issuer's Class A common stock ("Class A Common Stock") that are scheduled to vest on January 1, 2027, (ii) 2,434 unvested RSUs in respect of Class A Common Stock that are scheduled to vest on January 1, 2028, and (iii) 6,627 unvested RSUs in respect of Class A Common Stock that are scheduled to vest in equal installments on March 17, 2026, March 17, 2027 and March 17, 2028, in each case, subject to the reporting person's continued employment through the applicable vesting date. /s/ Douglas Friedman, Attorney-in-Fact for Amy Clack 2026-02-12