X0306 4 2020-03-17 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 2020-03-17 4 A 0 51453 0 A 557692 D Class A common stock 20000 I See footnote The reported transaction is an award of restricted stock units ("RSUs") in respect of the issuer's Class A common stock ("Class A Common Stock"). Subject to the reporting person's continued employment with the issuer through the applicable vesting date, these RSUs are scheduled to vest in equal installments on each of the first, second and third anniversaries of March 17, 2020. This amount includes (i) 207,713 unvested RSUs in respect of Class A Common Stock which are scheduled to vest on January 1, 2021, subject to the reporting person's continued employment through such date, (ii) 298,526 unvested RSUs in respect of Class A Common Stock which are scheduled to vest on January 1, 2022, subject to the reporting person's continued employment through such date, and (iii) 51,453 unvested RSUs in respect of Class A Common Stock which are scheduled to vest as described in footnote 1 to this Form 4. 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. /s/ Scott Zucker, Attorney-in-Fact for Lee Olesky 2020-03-19