Tradeweb Markets Inc.

If you own common stock of record, you may revoke your proxy or change your voting instructions at any time before

your shares are voted at the Annual Meeting by delivering to the Secretary of the Company a written notice of revocation or a

duly executed proxy (via the Internet or telephone or by returning a proxy card) bearing a later date or by virtually attending

the Annual Meeting and voting. A stockholder owning common stock in street name may revoke or change voting

instructions by contacting the bank, brokerage firm or other nominee holding the shares or by obtaining a legal proxy from

such institution and voting virtually at the Annual Meeting.