As Of	Filer	Filing¹	For·On·As	Docs:Size	Issuer		Filing Agent

  4/8/19  Ganeles Scott                     4          Director²   1:5K   Tradeweb Markets Inc.             Donnelley Fin’l S… 06/FA 
  4/8/19  Pluta Thomas                      4          Director²   1:5K   Tradeweb Markets Inc.             Broadridge Fin’l… Inc/FA 
  4/8/19  Madoff Paula                      4          Director²   1:5K   Tradeweb Markets Inc.             Broadridge Fin’l… Inc/FA 
  4/4/19  Walton Debra                      3          Director²   1:3K   Tradeweb Markets Inc.             Donnelley Fin’l S… 06/FA 
  4/4/19  Finley John G                     3          Director²   1:3K   Tradeweb Markets Inc.             Donnelley Fin’l S… 06/FA 
  4/4/19  West Brian                        3          Director²   1:3K   Tradeweb Markets Inc.             Donnelley Fin’l S… 06/FA 
  4/4/19  Brand Martin                      3          Director²   1:3K   Tradeweb Markets Inc.             Donnelley Fin’l S… 06/FA 
  4/4/19  Blackstone Mgmt Assocs (…  VII LP 3          10% Owner²  1:20K  Tradeweb Markets Inc.             Donnelley Fin’l S… 06/FA 
          BCP VII GP L.L.C.
          Blackstone Group L.P.
          Blackstone Group Management L.L.C.
          Blackstone Holdings III GP L.P.
          Blackstone Holdings III GP Management L.L.C.
          Blackstone Holdings III L.P.
          Schwarzman Stephen A
  4/4/19  Refinitiv US PME LLC              3          10% Owner²  1:21K  Tradeweb Markets Inc.             Donnelley Fin’l S… 06/FA 
          BCP VII Holdings Manager (Cayman) L.L.C.
          BCP York Holdings (Delaware) L.P.
          BCP York Holdings GP (Delaware) L.L.C.
          BCP York Subsidiary (Cayman) L.P.
          Refinitiv Holdings Ltd.
          Refinitiv Parent Ltd.
          Refinitiv US Holdings Inc.
          Refinitiv US LLC
  4/4/19  Ganeles Scott                     3          Director²   2:7K   Tradeweb Markets Inc.             Donnelley Fin’l S… 06/FA 
  4/4/19  Bruni Enrico                      3          Officer²    2:16K  Tradeweb Markets Inc.             Broadridge Fin’l… Inc/FA 
  4/4/19  Friedman Douglas                  3          Officer²    2:16K  Tradeweb Markets Inc.             Broadridge Fin’l… Inc/FA 
  4/4/19  Hult William                      3          Dir.,Off.²  2:16K  Tradeweb Markets Inc.             Broadridge Fin’l… Inc/FA 
  4/4/19  Maisey Simon                      3          Officer²    2:15K  Tradeweb Markets Inc.             Broadridge Fin’l… Inc/FA 
  4/4/19  Olesky Lee                        3          Dir.,Off.²  2:17K  Tradeweb Markets Inc.             Broadridge Fin’l… Inc/FA 
  4/4/19  Spencer James                     3          Officer²    2:16K  Tradeweb Markets Inc.             Broadridge Fin’l… Inc/FA 
  4/4/19  Warshaw Robert J                  3          Officer²    2:15K  Tradeweb Markets Inc.             Broadridge Fin’l… Inc/FA 
  4/4/19  Zucker Scott                      3          Officer²    2:15K  Tradeweb Markets Inc.             Broadridge Fin’l… Inc/FA 
  4/4/19  Pluta Thomas                      3          Director²   2:11K  Tradeweb Markets Inc.             Broadridge Fin’l… Inc/FA 
  4/4/19  Madoff Paula                      3          Director²   2:11K  Tradeweb Markets Inc.             Broadridge Fin’l… Inc/FA 

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¹	Filing/Form Types:
	3	Initial Statement of Beneficial Ownership of Securities by an Insider — Form 3 { The Filer is an Insider² of the Issuer }.
	4	Statement of Changes in Beneficial Ownership of Securities by an Insider — Form 4 { The Filer is an Insider² of the Issuer }.
²	Insider:  The Filer is a Director, Officer, 10% Owner and/or Other “insider” of the Issuer.