Pursuant to the letter agreement entered into between Sean M. O’Connor, Executive Vice-Chairman of the Board of Directors, and StoneX Group on March 31, 2025, he was granted

1. 300,000 restricted shares of Company Stock with ratable vesting over a four-year period and
2. performance shares of Company Stock subject to cliff vesting on the fourth anniversary of the grant date in an amount as follows:

• a minimum amount of zero performance shares of Company Stock awarded inf the Company’s average return on equity (“ROE”) over such four-year period is less than 6%;
•  90,000 performance shares of Common Stock if the Company’s average ROE over such four-year period is 6%;
• a target of 225,000 performance shares of Company Stock awarded if the Company’s average ROE over such four-year period is 15%; and
• a maximum amount of 337,500 performance shares of Company Stock if the Company’s average ROE over such four-year period equals or exceeds 18% and together with the Restricted Stock.

All determinations of whether the performance goals have been achieved, the number of shares earned by the Executive, and all other matters related to this award shall be made by the compensation committee of the Company’s board of directors in its sole discretion.

Sean M. O’Connor is the founder and Executive Vice-Chairman of the Board of Directors of StoneX Group Inc. Mr. O’Connor invested in the company, assuming management control as Chief Executive Officer in October 2002.

Before joining StoneX, Mr. O’Connor served as the Chief Executive Officer of Standard New York Securities, a division of Standard Bank, from 1994 to 2002. Additionally, he served as the Executive Director of Standard Bank London, Ltd., a UK-based subsidiary of Standard Bank of South Africa, from 1999 to 2002. Mr. O’Connor is a qualified Chartered Accountant (South Africa).