StoneX Group Inc.

In connection with the filing of this Form 10-Q, our management, including the Chief Executive Officer and Chief Financial Officer, evaluated the effectiveness of the design and operation of our disclosure controls and procedures (as such term is defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act) as of December 31, 2025. Based on such evaluation, our Chief Executive Officer and Chief Financial Officer have concluded that our disclosure controls and procedures were effective to provide reasonable assurance that their objectives were met as of December 31, 2025.

There are limitations inherent in any internal control, such as the possibility of human error and the circumvention or overriding of controls. A control system, no matter how well conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the control system are met, and may not prevent or detect misstatements. As conditions change over time, so too may the effectiveness of internal controls. As a result, there can be no assurance that a control system will succeed in preventing all possible instances of error and fraud. Our disclosure controls and procedures are designed to provide reasonable assurance of achieving their objectives, and the conclusions of our Chief Executive Officer and Chief Financial Officer are made at the “reasonable assurance” level.

There were no changes in our internal control over financial reporting during the quarter ended December 31, 2025, except as discussed below, that materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

During the quarter ended December 31, 2025, Management integrated the internal control structure of RJO, which was acquired on July 31, 2025, into its internal control environment. As a result, RJO has been included in management’s assessment of internal control over financial reporting for the first time in this quarterly period. Key integrations assessed during the quarter include controls around accounting policies, general ledger reconciliations, and financial statement disclosure.

During the quarter ended December 31, 2025, Management redesigned the process to automate the calculation of offsetting amounts of collateralized transactions with the same counterparty, to ensure proper presentation of “securities purchased under agreements to resell” and “securities sold under agreements to repurchase” within the Company’s condensed consolidated balance sheet.

PART II