SCHEDULE 13D/A

Tradeweb Markets Inc

Class A Common Stock · CUSIP: 892672106

Event date: 2025-03-06

Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.

Filing-level shares

Unavailable

Percent of class

Unavailable

• Refinitiv US PME LLCReported CIK 0001772075

  Shares: 22,988,329.00 · Class: 16.5%

• Refinitiv US LLCReported CIK 0001772073

  Shares: 22,988,329.00 · Class: 16.5%

• LSEGA, Inc.Reported CIK 0001842891

  Shares: 22,988,329.00 · Class: 16.5%

• LSEG US Holdco, Inc.Reported CIK 0002006452

  Shares: 22,988,329.00 · Class: 16.5%

• Refinitiv TW Holdings Ltd.Reported CIK 0001772096

  Shares: 96,933,192.00 · Class: 45.5%

• Refinitiv Parent LimitedReported CIK 0001771967

  Shares: 119,921,521.00 · Class: 50.8%

• London Stock Exchange Group plcReported CIK 0001842726

  Shares: 119,921,521.00 · Class: 50.8%

Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.