[424B7] StoneX Group Inc. Prospectus Filed Pursuant to Rule 424(b)(7)
StoneX Group Inc. filed a prospectus supplement describing an offering in which selling stockholders may sell up to 3,085,554 shares as part of a total outstanding common stock count of 52,173,843 shares after the offering. The prospectus states the selling stockholders will receive all sale proceeds and that StoneX will not receive any proceeds from those sales. It lists specific selling holders (including RJO Lenders LLC with 305,179 shares and BofA Securities, Inc. with 111,640 shares) and notes the company’s common stock trades on NASDAQ under SNEX. The document also summarizes terms for debt, warrants, preferred stock, units and events of default as disclosed in the registration materials.
StoneX Group Inc. ha depositato un supplemento al prospetto relativo a un’offerta nella quale gli azionisti venditori potranno cedere fino a 3.085.554 azioni, su un totale di 52.173.843 azioni ordinarie in circolazione dopo l’operazione. Il prospetto precisa che i proventi delle vendite andranno interamente agli azionisti venditori e che StoneX non riceverà alcun ricavo da tali cessioni. Vengono indicati i singoli azionisti venditori (fra cui RJO Lenders LLC con 305.179 azioni e BofA Securities, Inc. con 111.640 azioni) e si segnala che le azioni ordinarie della società sono quotate al NASDAQ con il simbolo SNEX. Il documento riepiloga inoltre i termini relativi a debito, warrant, azioni privilegiate, unit e gli eventi di inadempienza come riportato nei materiali di registrazione.
StoneX Group Inc. presentó un suplemento al prospecto que describe una oferta en la que los accionistas vendedores podrán vender hasta 3.085.554 acciones, dentro de un total de 52.173.843 acciones ordinarias en circulación tras la operación. El prospecto indica que los ingresos de esas ventas corresponderán íntegramente a los accionistas vendedores y que StoneX no recibirá ningún ingreso por dichas ventas. Se enumeran los titulares vendedoras específicos (incluyendo a RJO Lenders LLC con 305.179 acciones y BofA Securities, Inc. con 111.640 acciones) y se señala que las acciones ordinarias de la compañía cotizan en NASDAQ con el ticker SNEX. El documento también resume los términos referentes a deuda, warrants, acciones preferentes, unidades y eventos de incumplimiento según lo divulgado en los materiales de registro.
StoneX Group Inc.는 판매 주주들이 총 공모 후 발행 주식 수 52,173,843주 중 최대 3,085,554주를 판매할 수 있는 공모 설명을 담은 보충 설명서를 제출했습니다. 설명서에는 해당 판매로 발생하는 수익은 전부 판매 주주들이 수령하며 StoneX는 그 어떤 수익도 받지 않는다고 기재되어 있습니다. 개별 판매 보유자(예: RJO Lenders LLC 305,179주, BofA Securities, Inc. 111,640주 등)가 명시되어 있으며 회사의 보통주는 SNEX라는 심볼로 NASDAQ에 상장되어 있다고 언급되어 있습니다. 문서에는 등록 자료에 공개된 바와 같이 채무, 워런트, 우선주, 유닛 및 채무불이행 사건에 관한 조건도 요약되어 있습니다.
StoneX Group Inc. a déposé un supplément au prospectus décrivant une offre dans laquelle des actionnaires vendeurs peuvent céder jusqu’à 3 085 554 actions, sur un total de 52 173 843 actions ordinaires en circulation après l’opération. Le prospectus précise que le produit de ces ventes reviendra intégralement aux actionnaires vendeurs et que StoneX ne percevra aucun produit de ces cessions. Il énumère les cessionnaires spécifiques (dont RJO Lenders LLC avec 305 179 actions et BofA Securities, Inc. avec 111 640 actions) et indique que les actions ordinaires de la société sont cotées au NASDAQ sous le sigle SNEX. Le document résume également les modalités relatives à la dette, aux warrants, aux actions privilégiées, aux unités et aux cas de défaut tels que divulgués dans les documents d’enregistrement.
StoneX Group Inc. hat einen Nachtrag zum Prospekt eingereicht, der ein Angebot beschreibt, bei dem verkaufende Aktionäre bis zu 3.085.554 Aktien veräußern können, bei insgesamt 52.173.843 ausstehenden Stammaktien nach dem Angebot. Im Prospekt heißt es, dass die Erlöse aus diesen Verkäufen vollständig den verkaufenden Aktionären zufließen und StoneX keine Erlöse daraus erhalten wird. Es werden einzelne verkaufende Inhaber genannt (unter anderem RJO Lenders LLC mit 305.179 Aktien und BofA Securities, Inc. mit 111.640 Aktien) und darauf hingewiesen, dass die Stammaktien des Unternehmens an der NASDAQ unter dem Ticker SNEX gehandelt werden. Das Dokument fasst außerdem die Bedingungen für Schulden, Warrants, Vorzugsaktien, Units und Fälle von Vertragsbruch zusammen, wie in den Registrierungsunterlagen offengelegt.
- Transparent disclosure of selling stockholders, share counts and control relationships (e.g., O’Brien entities, RJO Lenders LLC, BofA) which aids investor assessment
- No new primary issuance — company will not receive proceeds from the sales, so there is no dilution from this offering as described
- Potential selling pressure from up to 3,085,554 shares being offered by selling stockholders which could affect the market price
- Insider/affiliate sales include shares controlled by principal families and entities, which may signal liquidity events by large holders
Insights
TL;DR: This filing documents an offloading of existing shares by insiders/holders, not a capital raise, which could increase share supply.
The prospectus supplement describes a secondary sale program where selling stockholders may sell up to 3,085,554 shares, with the company receiving no proceeds. That structure means no dilution from new issuance but could create near-term selling pressure depending on execution. The filing discloses specific large holders and control relationships, which helps assess potential coordination of sales. The inclusion of descriptions of debt, warrant and preferred stock terms is standard for shelf registration and preserves flexibility for future securities issuance.
TL;DR: Disclosure is thorough on beneficial ownership and governance mechanics but raises typical liquidity and governance considerations.
The prospectus identifies entities and individuals with voting or investment control over material blocks (e.g., O’Brien-related entities and Douglas Laux for RJO Lenders LLC) and clarifies disclaimers by BofA representatives. Governance provisions noted (meeting call rights, plurality voting, no cumulative voting) are disclosed and relevant to minority-holder influence. These details are useful for assessing control dynamics and potential coordinated dispositions, though the filing does not indicate any change to board composition or governance policies.
StoneX Group Inc. ha depositato un supplemento al prospetto relativo a un’offerta nella quale gli azionisti venditori potranno cedere fino a 3.085.554 azioni, su un totale di 52.173.843 azioni ordinarie in circolazione dopo l’operazione. Il prospetto precisa che i proventi delle vendite andranno interamente agli azionisti venditori e che StoneX non riceverà alcun ricavo da tali cessioni. Vengono indicati i singoli azionisti venditori (fra cui RJO Lenders LLC con 305.179 azioni e BofA Securities, Inc. con 111.640 azioni) e si segnala che le azioni ordinarie della società sono quotate al NASDAQ con il simbolo SNEX. Il documento riepiloga inoltre i termini relativi a debito, warrant, azioni privilegiate, unit e gli eventi di inadempienza come riportato nei materiali di registrazione.
StoneX Group Inc. presentó un suplemento al prospecto que describe una oferta en la que los accionistas vendedores podrán vender hasta 3.085.554 acciones, dentro de un total de 52.173.843 acciones ordinarias en circulación tras la operación. El prospecto indica que los ingresos de esas ventas corresponderán íntegramente a los accionistas vendedores y que StoneX no recibirá ningún ingreso por dichas ventas. Se enumeran los titulares vendedoras específicos (incluyendo a RJO Lenders LLC con 305.179 acciones y BofA Securities, Inc. con 111.640 acciones) y se señala que las acciones ordinarias de la compañía cotizan en NASDAQ con el ticker SNEX. El documento también resume los términos referentes a deuda, warrants, acciones preferentes, unidades y eventos de incumplimiento según lo divulgado en los materiales de registro.
StoneX Group Inc.는 판매 주주들이 총 공모 후 발행 주식 수 52,173,843주 중 최대 3,085,554주를 판매할 수 있는 공모 설명을 담은 보충 설명서를 제출했습니다. 설명서에는 해당 판매로 발생하는 수익은 전부 판매 주주들이 수령하며 StoneX는 그 어떤 수익도 받지 않는다고 기재되어 있습니다. 개별 판매 보유자(예: RJO Lenders LLC 305,179주, BofA Securities, Inc. 111,640주 등)가 명시되어 있으며 회사의 보통주는 SNEX라는 심볼로 NASDAQ에 상장되어 있다고 언급되어 있습니다. 문서에는 등록 자료에 공개된 바와 같이 채무, 워런트, 우선주, 유닛 및 채무불이행 사건에 관한 조건도 요약되어 있습니다.
StoneX Group Inc. a déposé un supplément au prospectus décrivant une offre dans laquelle des actionnaires vendeurs peuvent céder jusqu’à 3 085 554 actions, sur un total de 52 173 843 actions ordinaires en circulation après l’opération. Le prospectus précise que le produit de ces ventes reviendra intégralement aux actionnaires vendeurs et que StoneX ne percevra aucun produit de ces cessions. Il énumère les cessionnaires spécifiques (dont RJO Lenders LLC avec 305 179 actions et BofA Securities, Inc. avec 111 640 actions) et indique que les actions ordinaires de la société sont cotées au NASDAQ sous le sigle SNEX. Le document résume également les modalités relatives à la dette, aux warrants, aux actions privilégiées, aux unités et aux cas de défaut tels que divulgués dans les documents d’enregistrement.
StoneX Group Inc. hat einen Nachtrag zum Prospekt eingereicht, der ein Angebot beschreibt, bei dem verkaufende Aktionäre bis zu 3.085.554 Aktien veräußern können, bei insgesamt 52.173.843 ausstehenden Stammaktien nach dem Angebot. Im Prospekt heißt es, dass die Erlöse aus diesen Verkäufen vollständig den verkaufenden Aktionären zufließen und StoneX keine Erlöse daraus erhalten wird. Es werden einzelne verkaufende Inhaber genannt (unter anderem RJO Lenders LLC mit 305.179 Aktien und BofA Securities, Inc. mit 111.640 Aktien) und darauf hingewiesen, dass die Stammaktien des Unternehmens an der NASDAQ unter dem Ticker SNEX gehandelt werden. Das Dokument fasst außerdem die Bedingungen für Schulden, Warrants, Vorzugsaktien, Units und Fälle von Vertragsbruch zusammen, wie in den Registrierungsunterlagen offengelegt.
Filed Pursuant to Rule 424(b)(7)
Registration No. 333-285071
PROSPECTUS SUPPLEMENT
(To Prospectus dated February 19, 2025)
StoneX Group Inc.
3,085,554 Shares of Common Stock
This prospectus supplement relates to the offer and sale from time to time of up to 3,085,554 shares of common stock, par value $0.01 per share (“common stock”), of StoneX Group Inc. (the “Company”), by the selling stockholders identified in this prospectus supplement (the “selling stockholders”). The shares of common stock represent the equity consideration the selling stockholders received in connection with the Company’s acquisition of the business of RTS Investor Corp., a Delaware corporation (“RJO” and collectively, the “RJO Acquisition”).
The Company’s common stock is listed on the NASDAQ Global Select Market (“NASDAQ”) under the symbol “SNEX.” On August 28, 2025, the last sale price of the common stock as reported on NASDAQ was $101.05 per share.
The Company is not selling any shares of common stock under this prospectus supplement and will not receive any proceeds from the sale of shares by the selling stockholders. The selling stockholders may, from time to time, offer and sell shares of Class A common stock held by them directly or indirectly through agents or broker-dealers on terms to be determined at the time of sale. See “Plan of Distribution.”
Investing in our common stock involves risks. See “Risk Factors“ beginning on page S-3 and in the documents we have incorporated by reference herein.
Neither the Securities and Exchange Commission (the “SEC”) nor any state securities commission has approved or disapproved of these securities or determined if this prospectus supplement is truthful or complete. Any representation to the contrary is a criminal offense.
The date of this prospectus supplement is August 29, 2025.
TABLE OF CONTENTS
Page
Prospectus Supplement
About This Prospectus Supplement | S-i |
Where You Can Find More Information; Incorporation of Certain Documents by Reference | S-ii |
Cautionary Note Regarding Forward-Looking Statements | S-iii |
Summary | S-1 |
The Offering | S-2 |
Risk Factors | S-3 |
Use of Proceeds | S-4 |
Selling Stockholders | S-5 |
Material U.S. Federal Income and Estate Tax Considerations to Non-U.S. Holders | S-6 |
Plan of Distribution | S-9 |
Legal Matters | S-11 |
Experts | S-12 |
Prospectus
About this Prospectus | 3 | |
Special Note on Forward-Looking Statements | 4 | |
Risk Factors | 4 | |
Where You Can Find More Information | 4 | |
The Company | 6 | |
Description of Debt Securities | 7 | |
Description of Warrants | 12 | |
Description of Preferred Stock | 15 | |
Description of Units | 18 | |
Description of Common Stock | 19 | |
Form, Exchange and Transfer | 20 | |
Use of Proceeds | 23 | |
Plan of Distribution | 23 | |
Legal Matters | 24 | |
Experts | 25 |
About This Prospectus Supplement
This document consists of two parts. The first part is this prospectus supplement, which describes the common stock that the selling stockholders may offer and sell and supplements information contained in the accompanying prospectus and the documents incorporated by reference in this prospectus supplement and the accompanying prospectus. To the extent required by applicable law, each time the selling stockholders sell shares of common stock under this prospectus supplement, the selling stockholders will provide you with this prospectus supplement. The second part is the accompanying prospectus, which describes more general information, some of which may not apply to this offering. You should read both this prospectus supplement and the accompanying prospectus, including the documents incorporated by reference.
If the description of the offering varies between this prospectus supplement and the accompanying prospectus, you should rely on the information in this prospectus supplement.
Any statement made in this prospectus supplement, the accompanying prospectus or in a document incorporated or deemed to be incorporated by reference in this prospectus supplement will be deemed to be modified or superseded for purposes of this prospectus supplement to the extent that a statement contained in this prospectus supplement or in any other subsequently filed document that is also incorporated or deemed to be incorporated by reference in this prospectus supplement modifies or supersedes that statement. Any statement so modified or superseded will not be deemed, except as so modified or superseded, to constitute a part of this prospectus supplement. See “Where You Can Find More Information; Incorporation of Certain Documents by Reference” in this prospectus supplement.
Neither the Company nor the selling stockholders have authorized anyone to provide you with any information or to make any representations about anything not contained or incorporated by reference in this prospectus supplement, any accompanying prospectus or in any free writing prospectus filed by us with the U.S. Securities and Exchange Commission (“SEC”). We do not take any responsibility for, and can provide no assurance as to the reliability of, any other information or representations that others may give you.
Neither the Company nor the selling stockholders are making an offer to sell or soliciting offers to buy these securities in any jurisdiction where, or to any person to whom, the offer or sale is not permitted. The information contained or incorporated by reference in this prospectus supplement, the accompanying prospectus and any free writing prospectus that we may provide you in connection with this offering or other offering material filed by us with the SEC is accurate only as of the date of those documents or such information, regardless of the time of delivery of the documents or information or the time of any sale of the securities. Our business, financial condition, results of operations and future growth prospects may have changed since those dates.
On April 13, 2025, the Company and certain of its affiliate entities entered into a definitive agreement with RJO and certain affiliated entities and equity holders thereof, including affiliates of the selling stockholders, to acquire RJO (as amended, the “RJO Merger Agreement”). A portion of the consideration for the RJO Acquisition consisted of shares in the form of common stock issued by the Company to the selling stockholders. Pursuant to the RJO Merger Agreement, we agreed to register with the SEC the resale of all the shares of common stock issued to the selling stockholders in connection with the RJO Acquisition.
For investors outside the United States (“U.S.”): neither the Company nor the selling stockholders have done anything that would permit this offering or possession or distribution of this prospectus supplement, the accompanying prospectus or any free writing prospectus we may provide to you in connection with this offering in any jurisdiction where action for that purpose is required, other than in the U.S. You are required to inform yourselves about and to observe any restrictions relating to this offering and the distribution of this prospectus supplement, the accompanying prospectus and any such free writing prospectus outside of the U.S.
As used in this prospectus supplement, unless the context otherwise requires, references to “StoneX,” “the Company,” “we,” “our” and “us,” or like terms, refer to StoneX Group Inc. and its consolidated subsidiaries taken as a whole.
S-i
Where You Can Find
More Information; Incorporation
of Certain Documents by Reference
We file annual, quarterly and current reports, proxy statements and other information with the SEC. The SEC maintains a website (http://www.sec.gov) from which interested persons can electronically access our reports, proxy statements and other information regarding us.
We are incorporating by reference into this prospectus supplement certain information that we have filed with the SEC, which means that we are disclosing important information to you by referring you to documents we have filed separately with the SEC. The documents incorporated by reference are considered part of this prospectus supplement. This prospectus supplement incorporates by reference the following (excluding any portions of such documents that have been “furnished” but not “filed” for purposes of the Securities Exchange Act of 1934, as amended (the “Exchange Act”)):
· | our Annual Report on Form 10-K for the fiscal year ended September 30, 2024 (filed with the SEC on November 29, 2024); |
· | the information specifically incorporated by reference in our Annual Report on Form 10-K for the fiscal year ended September 30, 2024 from our Definitive Proxy Statement on Schedule 14A (filed with the SEC on January 23, 2025); |
· | our Quarterly Reports on Form 10-Q for the periods ended December 31, 2024 (filed with the SEC on February 5, 2025), March 31, 2025 (filed with the SEC on May 7, 2025) and June 30, 2025 (filed with the SEC on August 7, 2025); and |
· | Current Reports on Form 8-K filed on December 9, 2024; February 5, 2025 (but only with respect to Item 8.01); February 11, 2025; March 10, 2025 (but only with respect to Item 5.07); April 3, 2025; April 14, 2025 (but only with respect to Item 1.01 and Item 3.02); June 4, 2025; June 23, 2025 (but only with respect to Item 8.01); June 24, 2025; July 8, 2025; and July 31, 2025 (but only with respect to Item 2.01, Item 2.03 and Item 3.02). |
In addition, we incorporate by reference any filings made with the SEC in accordance with Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act on or after the date of this prospectus supplement and before the date all of the securities offered hereby are sold or the offering is otherwise terminated, with the exception of any information furnished under Item 2.02 or Item 7.01 (including any financial statements or exhibits relating thereto furnished pursuant to Item 9.01) of Form 8-K, which is not deemed filed and which is not incorporated by reference herein. Any such filings shall be deemed to be incorporated by reference and to be a part of this prospectus supplement from the respective dates of filing of those documents. Any statement contained in a document or report incorporated or deemed to be incorporated by reference herein shall be deemed to be modified or superseded for purposes of this prospectus supplement to the extent that a statement contained herein or in any subsequently filed document or report that also is or is deemed to be incorporated by reference herein modifies or supersedes such statement. Any such statement so modified or superseded shall not be deemed, except as so modified or superseded, to constitute a part of this prospectus supplement.
You can obtain any of the filings incorporated by reference into this prospectus supplement through us or from the SEC through the SEC’s website at http://www.sec.gov. We will provide, without charge, to each person, including any beneficial owner, to whom a copy of this prospectus supplement is delivered, upon written or oral request of such person, a copy of any or all of the reports and documents referred to above which have been or may be incorporated by reference into this prospectus supplement. You should direct requests for those documents to:
StoneX Group Inc.
Attention: Investor Relations
230 Park Ave, 10th Floor,
New York, NY 10169
Telephone Number: (212) 485-3500
We maintain an internet site at https://www.stonex.com.
Our SEC filings are also available free of charge at our website. Our website and the information contained on or connected to it shall
not be deemed to be incorporated into this prospectus supplement or the registration statement of which it forms a part.
S-ii
Cautionary Note Regarding Forward-Looking Statements
This prospectus supplement and the documents incorporated by reference herein may contain certain “forward-looking statements” within the meaning of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. The words “believe,” “may,” “will,” “estimate,” “continue,” “anticipate,” “intend,” “expect,” and similar expressions are intended to identify forward-looking statements.
These forward-looking statements involve known and unknown risks and uncertainties, many of which are beyond the control of the Company, including statements about the benefits of the RJO acquisition, including expected synergies and future financial and operating results, the plans, objectives, expectations and intentions of StoneX after the acquisition, adverse changes in economic, political and market conditions, including losses from our market-making and trading activities arising from counterparty failures, global trade policies and tariffs, the loss of key personnel, the impact of increasing competition, the impact of changes in government regulation, uncertainty concerning fiscal or monetary policies established by central banks and financial regulators, the possibility of liabilities arising from violations of foreign, U.S. federal and U.S. state securities laws, the impact of changes in technology in the securities and commodities trading industries, and other risks discussed in our filings with the SEC, including in our Annual Report.
Although we believe that our forward-looking statements are based upon reasonable assumptions regarding our business and future market conditions, there can be no assurances that our actual results will not differ materially from any results expressed or implied by our forward-looking statements. We undertake no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law. We caution investors that any forward-looking statements are not guarantees of future performance.
S-iii
Summary
This summary highlights information appearing elsewhere or incorporated or deemed incorporated by reference in this prospectus supplement and the accompanying prospectus and may not contain all the information you should consider before investing in our common stock. You should carefully read this entire prospectus supplement, including the section entitled “Risk Factors,” our consolidated financial statements and the related notes thereto and the documents incorporated by reference herein, before making an investment decision.
Overview
We operate a global financial services network that connects companies, organizations, traders and investors to the global market ecosystem through a unique blend of digital platforms, end-to-end clearing and execution services, high touch service and deep expertise. We strive to be the one trusted partner to our clients, providing our network, products and services to allow them to pursue trading opportunities, manage their market risks, make investments and improve their business performance. Our businesses are supported by our global infrastructure of regulated operating subsidiaries, our advanced technology platforms and our team of more than 4,700 employees as of June 30, 2025. We believe our client-first approach differentiates us from large banking institutions, engenders trust and has enabled us to establish market leading positions in a number of complex fields in financial markets around the world.
We offer a vertically integrated product suite, beginning with high-touch service and electronic access to nearly all major financial markets worldwide, as well as numerous liquidity venues. We deliver this access through the entire lifecycle of a trade, from deep market expertise and on-the-ground intelligence to best execution and post-trade clearing, custody and settlement services. We believe this is a unique product offering outside of the bulge bracket banks, which creates long-term relationships with our clients. Our business model has created a revenue stream that is diversified by asset class, client type and geography, earning commissions and spreads as clients execute transactions across our global network, monetizing non-trading client activity including interest and fee earnings on client balances as well as earning consulting fees for our market intelligence and risk management services.
Corporate Information
StoneX Group Inc. is a Delaware corporation. Our principal executive offices are located at 230 Park Avenue, 10th Floor, New York, New York 10169, and our telephone number is (212) 485-3500. Our corporate website address is https://www.stonex.com. Our website and the information contained on, or that can be accessed through, this website is not deemed to be incorporated by reference in, and is not considered part of, this prospectus supplement. You should not rely on any such information in making your investment decision.
S-1
The Offering
Common stock offered by the selling stockholders | Up to 3,085,554 shares of common stock. |
Common stock to be outstanding after this offering | 52,173,843 shares of common stock (including the 3,085,554 shares of common stock that may be sold from time to time by the selling stockholders in this offering). |
Use of Proceeds | The selling stockholders will receive all of the proceeds from the sale of the shares of common stock offered from time to time under this prospectus supplement. We will not receive any proceeds from the sale of shares of common stock by the selling stockholders. See “Use of Proceeds.” |
Risk Factors | You should carefully consider the information set forth herein under “Risk Factors” and the other information included or incorporated by reference in this prospectus supplement, including the “Risk Factors” in our Annual Report, before deciding whether to purchase shares of common stock. |
Listing | Our common stock is listed on NASDAQ under the symbol “SNEX.” |
The number of shares of common stock to be outstanding after this offering is based on 52,173,843 shares of common stock (including 3,085,554 shares of common stock that may be sold from time to time by the selling stockholders in this offering) outstanding as of August 25, 2025, and except as otherwise indicated, the number of shares of our common stock outstanding after this offering excludes 7,433,945 shares of our common stock issuable under the 2022 Omnibus Equity Incentive Plan (the “Omnibus Plan”).
S-2
Risk Factors
Investing in our common stock involves risks. You should carefully review the risk factors and other cautionary statements described under the section entitled “Risk Factors” in our Annual Report which is incorporated by reference in this prospectus supplement, or any similar caption in the documents that we subsequently file with the SEC that are deemed to be incorporated by reference in this prospectus supplement, and in any free writing prospectus that we provide you in connection with the offering of common stock pursuant to this prospectus supplement. The risks and uncertainties discussed in the documents referred to above, as well as other matters discussed in this prospectus supplement and in those documents, could materially and adversely affect our business, financial condition, liquidity and results of operations and the market price of the common stock. Moreover, the risks and uncertainties discussed in the foregoing documents are not the only risks and uncertainties that we face, and our business, financial condition, liquidity and results of operations and the market price of the common stock could be materially adversely affected by other matters that are not known to us or that we currently do not consider to be material risks to our business.
S-3
Use of Proceeds
The selling stockholders will receive all of the net proceeds from the sale of the shares of common stock offered from time to time under this prospectus supplement. We will not receive any proceeds from the sale of shares of common stock by the selling stockholders. We have agreed to pay certain expenses incurred in connection with the registration of the resale of shares of common stock under this prospectus supplement. See “Selling Stockholders” and “Plan of Distribution.”
S-4
Selling Stockholders
This prospectus supplement relates to the resale by the selling stockholders from time to time of up to 3,085,554 shares of common stock that the selling stockholders received in the form of common stock as partial consideration for the RJO Acquisition. The selling stockholders may from time to time offer and sell any or all of the shares of common stock set forth below pursuant to this prospectus supplement or any further supplements.
Pursuant to the RJO Merger Agreement, we agreed to register with the SEC the resale of all the shares of common stock issued to the selling stockholders in connection with the RJO Acquisition.
The following table shows information as of August 25, 2025 regarding the beneficial ownership of our common stock by the selling stockholders and sets forth the maximum number of shares of common stock eligible for resale by the selling stockholders under this prospectus supplement. The selling stockholders may in the future sell or transfer some or all of the securities indicated below in transactions exempt from the registration requirements of the Securities Act rather than under this prospectus supplement. The number of shares of common stock owned by the selling stockholders assumes that they do not beneficially own any shares of common stock other than the shares of common stock that the Company has issued to them in connection with the RJO Acquisition. We have prepared the following table based on information given to us by, or on behalf of, the selling stockholders. Information about the selling stockholders may change over time.
Beneficial ownership of shares is determined under the rules of the SEC and generally includes any shares over which a person exercises sole or shared voting or investment power. Except as noted by footnote, and subject to community property laws where applicable, we believe based on the information provided to us that the entities named in the table below have sole voting and investment power with respect to all shares of our common stock shown as beneficially owned by them.
Common
stock beneficially owned |
Shares
of |
Common
stock beneficially owned | |||
Name of Selling Stockholder |
Number |
Percent
of |
Number |
Percent
of | |
Entities affiliated with R.J. O'Brien & Associates, LLC(1) | 2,249,196 | 4.3% | 2,249,196 | — | — |
RJO Lenders LLC(2) | 305,179 | * | 305,179 | — | — |
BofA Securities, Inc.(3) | 111,640 | * | 111,640 | — | — |
Other Selling Stockholders(4) | 419,539 | * | 419,539 | — | — |
* | Less than 1%. |
(1) | Consists of (i) 13,721 shares held by John W. O’Brien 2012 Family Trust, (ii) 298,108 shares held by O’Brien Family Investments V LLC, (iii) 464,967 shares held by Trails Edge 94, LLC and (iv) 1,472,400 shares held by Westmoor Trail Partners LLC. David J. Moore, Robert J. O’Brien, Jr., John W. O’Brien, Jr. and Patricia M. O’Brien have voting or investment control over the foregoing entities, and as a result, may be deemed to beneficially own the shares of common stock held by such foregoing entities. |
(2) | Douglas Laux has voting or investment control over RJO Lenders LLC, and as a result, may be deemed to beneficially own the shares of common stock held by RJO Lenders LLC. |
(3) | Andrew Van Orden and Bret Kossman have voting or investment control over BofA Securities, Inc., and as a result, may be deemed to beneficially own the shares of common stock held by BofA Securities, Inc. Andrew Van Orden and Bret Kossman expressly disclaim beneficial ownership of the shares of common stock held by BofA Securities, Inc. |
(4) | Consists of selling stockholders not otherwise listed in this table who collectively own less than 1% of our common stock. |
S-5
Material U.S. Federal Income and Estate Tax Considerations to Non-U.S. Holders
The following is a general discussion of the material U.S. federal income and estate tax consequences of the ownership and disposition of our common stock by a “non-U.S. holder.” A “non-U.S. holder” is a beneficial owner of a share of our common stock that is, for U.S. federal income tax purposes:
· | a non-resident alien individual, other than a former citizen or resident of the United States subject to U.S. tax as an expatriate, |
· | a foreign corporation, or |
· | a foreign estate or trust. |
If an entity or arrangement treated as a partnership or other type of pass-through entity for U.S. federal income tax purposes owns our common stock, the tax treatment of a partner or beneficial owner of the entity may depend upon the status of the partner or beneficial owner, the activities of the entity and certain determinations made at the partner or beneficial owner level. Partners and beneficial owners in partnerships or other pass-through entities that own our common stock should consult their own tax advisors as to the particular U.S. federal income and estate tax consequences applicable to them.
This discussion is based on the Internal Revenue Code of 1986, as amended to the date hereof (the “Code”), administrative pronouncements, judicial decisions and final, temporary and proposed Treasury regulations, changes to any of which subsequent to the date of this prospectus supplement may affect the tax consequences described herein (possibly with retroactive effect). This discussion does not address all aspects of U.S. federal income and estate taxation that may be relevant to non-U.S. holders in light of their particular circumstances and does not address any U.S. federal gift, alternative minimum tax or Medicare contribution tax considerations or any tax consequences arising under the laws of any state, local or non-U.S. jurisdiction. Prospective holders are urged to consult their tax advisors with respect to the particular tax consequences to them of owning and disposing of our common stock, including the consequences under the laws of any state, local or non-U.S. jurisdiction.
Dividends
To the extent that we make a distribution of cash or other property (other than certain pro rata distributions of our stock) in respect of our common stock, the distribution generally will be treated as a dividend for U.S. federal income tax purposes to the extent it is paid out of our current or accumulated earnings and profits (as determined under U.S. federal income tax principles). Any portion of a distribution that exceeds our current and accumulated earnings and profits generally will be treated first as a tax-free return of capital that reduces a non-U.S. holder’s adjusted tax basis in our common stock, and to the extent the amount of the distribution exceeds a non-U.S. holder’s adjusted tax basis in our common stock, the excess will be treated as gain from the disposition of our common stock (the tax treatment of which is discussed below under “—Gain on Disposition of Common Stock”).
Dividends paid to a non-U.S. holder generally will be subject to U.S. federal withholding tax at a 30% rate, or a reduced rate specified by an applicable income tax treaty. In order to obtain a reduced rate of withholding under an applicable income tax treaty, a non-U.S. holder generally will be required to provide a properly executed Internal Revenue Service (the “IRS”) Form W-8BEN or IRS Form W-8BEN-E, as applicable, certifying its entitlement to benefits under the treaty.
A non-U.S. holder eligible for a reduced rate of U.S. federal withholding tax pursuant to an income tax treaty may obtain a refund of any excess amounts withheld by timely filing an appropriate claim for refund with the IRS.
S-6
However, dividends paid to a non-U.S. holder that are effectively connected with the non-U.S. holder’s conduct of a trade or business within the United States (and, if required by an applicable income tax treaty, are attributable to a permanent establishment or fixed base maintained by the non-U.S. holder in the United States) will not be subject to U.S. federal withholding tax if the non-U.S. holder provides a properly executed IRS Form W-8ECI. Instead, the effectively connected dividend income will generally be subject to regular U.S. income tax as if the non-U.S. holder were a U.S. person as defined under the Code. A non-U.S. holder that is treated as a corporation for U.S. federal income tax purposes receiving effectively connected dividend income may also be subject to an additional “branch profits tax” imposed at a rate of 30% (or a lower treaty rate) on its effectively connected earnings and profits (subject to certain adjustments).
Gain on Disposition of Common Stock
Subject to the discussions of backup withholding and FATCA withholding taxes below, a non-U.S. holder generally will not be subject to U.S. federal income tax on gain realized on a sale or other disposition of common stock unless:
· | the gain is effectively connected with a trade or business of the non-U.S. holder in the United States (and, if required by an applicable tax treaty, the gain is attributable to a permanent establishment or fixed base maintained by the non-U.S. holder in the United States), in which case the gain will be subject to U.S. federal income tax generally in the same manner as if the non-U.S. holder were a U.S. person as defined under the Code (and, in the case of a non-U.S. holder that is treated as a corporation for U.S. federal income tax purposes, may also be subject to the “branch profits tax” described above); |
· | the non-U.S. holder is an individual present in the United States for 183 days or more in the taxable year of disposition and certain other conditions are met, in which case the gain (net of certain U.S.-source losses) generally will be subject to U.S. federal income tax at a rate of 30% (or a lower treaty rate); or |
· | we are or have been a “United States real property holding corporation” (as described below) at any time within the five-year period preceding the disposition or the non-U.S. holder's holding period, whichever period is shorter, and either (i) our common stock is not regularly traded on an established securities market prior to the beginning of the calendar year in which the sale or disposition occurs or (ii) the non-U.S. holder has owned or is deemed to have owned, at any time within the five-year period preceding the disposition or the non-U.S. holder's holding period, whichever period is shorter, more than 5% of our common stock. |
We will be a United States real property holding corporation at any time that the fair market value of our “United States real property interests,” as defined in the Code and applicable Treasury regulations, equals or exceeds 50% of the aggregate fair market value of our worldwide real property interests and our other assets used or held for use in a trade or business (all as determined for U.S. federal income tax purposes). We believe that we are not, and do not anticipate becoming in the foreseeable future, a United States real property holding corporation.
Information Reporting and Backup Withholding
Distributions paid to a non-U.S. holder and the amount of any tax withheld with respect to such distributions generally will be reported to the IRS. Copies of the information returns reporting such distributions and any withholding may also be made available to the tax authorities in the country in which the non-U.S. holder resides under the provisions of an applicable income tax treaty.
S-7
A non-U.S. holder will not be subject to backup withholding on dividends received if such holder certifies under penalty of perjury that it is a non-U.S. holder (and the payor does not have actual knowledge or reason to know that such holder is a U.S. person as defined under the Code), or such holder otherwise establishes an exemption.
Information reporting and, depending on the circumstances, backup withholding will apply to the proceeds of a sale or other disposition of our common stock made within the U.S. or conducted through certain U.S.-related financial intermediaries, unless the non-U.S. holder complies with certification procedures to establish that it is not a U.S. person in order to avoid additional information reporting and backup withholding. The certification procedures required to claim a reduced rate of withholding under a treaty will generally satisfy the certification requirements necessary to avoid backup withholding as well.
Backup withholding is not an additional tax and the amount of any backup withholding from a payment to a non-U.S. holder will be allowed as a credit against the non-U.S. holder’s U.S. federal income tax liability and may entitle the non-U.S. holder to a refund, provided that the required information is furnished to the IRS in a timely manner.
FATCA
Under Sections 1471 through 1474 of the Code (such Sections commonly referred to as “FATCA”), payments of dividends on and the gross proceeds of dispositions of common stock of a U.S. issuer paid to (i) a “foreign financial institution” (as specifically defined in the Code) or (ii) a “non-financial foreign entity” (as specifically defined in the Code) will be subject to a withholding tax (separate and apart from, but without duplication of, the withholding tax described above) at a rate of 30%, unless various U.S. information reporting and due diligence requirements (generally relating to ownership by U.S. persons of interests in or accounts with those entities) have been satisfied or an exemption from these rules applies. Under proposed U.S. Treasury regulations promulgated by the Treasury Department on December 13, 2018, which state that taxpayers may rely on the proposed Treasury regulations until final Treasury regulations are issued, this withholding tax will not apply to the gross proceeds from the sale or disposition of common stock. An intergovernmental agreement between the United States and an applicable foreign country may modify these requirements. If a dividend payment is both subject to withholding under FATCA and subject to the withholding tax discussed above under “—Dividends,” the withholding under FATCA may be credited against, and therefore reduce, such other withholding tax. Non-U.S. holders should consult their tax advisors regarding the possible implications of this withholding tax on their investment in our common stock.
Federal Estate Tax
Individual non-U.S. holders (as specifically defined for U.S. federal estate tax purposes) and entities the property of which is potentially includible in such an individual’s gross estate for U.S. federal estate tax purposes (for example, a trust funded by such an individual and with respect to which the individual has retained certain interests or powers) should note that the common stock will be treated as U.S. situs property subject to U.S. federal estate tax, unless an applicable estate tax treaty provides otherwise.
S-8
Plan of Distribution
This prospectus supplement relates to the offer and sale from time to time of the shares of common stock covered by this prospectus supplement. The shares of common stock received by the selling stockholders as partial consideration pursuant to the RJO Merger Agreement are “restricted securities” within the meaning of Rule 144(a)(3) under the Securities Act and will contain a legend setting out such restriction and will be segregated until such time as they are sold under the registration statement of which this prospectus supplement forms a part. The Company is registering the resale of the shares of common stock to provide the holders thereof with freely tradeable securities, but such shares of common stock will not become freely tradeable until sold pursuant to the registration statement of which this prospectus supplement forms a part. There can be no assurance that the selling stockholders will sell any or all of the shares of common stock registered pursuant to the registration statement of which this prospectus supplement forms a part.
The selling stockholders may, from time to time, sell any or all of the shares of common stock offered hereby directly or indirectly through one or more broker-dealers or agents. The selling stockholders will be responsible for any agent’s commissions. The shares of common stock may be sold in one or more transactions at fixed prices, at prevailing market prices at the time of the sale, at varying prices determined at the time of sale or at negotiated prices. The selling stockholders may use any one or more of the following methods when selling shares of common stock:
· | on NASDAQ or any other national securities exchange or quotation service on which the securities may be listed or quoted at the time of sale; |
· | in the over-the-counter market; |
· | in transactions otherwise than on these exchanges or systems or in the over-the-counter market; |
· | through the writing of options, swaps or derivatives whether such options are listed on an options exchange or otherwise; |
· | through ordinary brokerage transactions and transactions in which the broker-dealer solicits purchasers; |
· | through block trades in which the broker-dealer will attempt to sell the shares of common stock as agent but may position and resell a portion of the block as principal to facilitate the transaction; |
· | through purchases by a broker-dealer as principal and resale by such broker-dealer for its account; |
· | through an exchange or market distribution in accordance with the rules of the applicable exchange or market; |
· | in privately negotiated transactions; |
· | through broker-dealers that may agree with the selling stockholders to sell a specified number of such shares of common stock at a stipulated price per share; |
· | through a combination of any such methods of sale; and |
· | any other method permitted pursuant to applicable law. |
The selling stockholders may also sell shares of common stock under Rule 144 under the Securities Act, if available, rather than under this prospectus supplement.
The selling stockholders and any broker-dealers or agents that are involved in selling the shares of common stock may be deemed to be “underwriters” within the meaning of the Securities Act in connection with such sales. In such event, any commissions received by such broker-dealers or agents and any profit on the resale of the shares of common stock purchased by them may be deemed to be underwriting commissions or discounts under the Securities Act.
S-9
Broker-dealers engaged by the selling stockholders may arrange for other broker-dealers to participate in sales. If the selling stockholders effect such transactions through underwriters, broker-dealers or agents, such underwriters, broker-dealers or agents may receive commissions in the form of discounts, concessions or commissions from the selling stockholders or commissions from purchasers of the shares of common stock for whom they may act as agent or to whom they may sell as principal, or both (which discounts, concessions or commissions as to particular underwriters, broker-dealers or agents may be less than or in excess of those customary in the types of transactions involved).
Pursuant to the RJO Merger Agreement, the Company has agreed to bear certain other costs, fees and expenses incurred in connection with the offering of common stock pursuant to this prospectus supplement. However, the Company does not have any obligation to pay any underwriting fees, discounts or commissions attributable to the sale of such shares of common stock, or any fees and expenses of any broker-dealer or other financial intermediary engaged by the selling stockholders.
S-10
Legal Matters
Davis Polk & Wardwell LLP, New York, New York, will pass upon the validity of the common stock offered by this prospectus supplement.
S-11
Experts
The consolidated financial statements and financial statement schedule of StoneX Group Inc. as of September 30, 2024 and 2023, and for each of the years in the three-year period ended September 30, 2024 and management's assessment of the effectiveness of internal control over financial reporting as of September 30, 2024 have been incorporated by reference herein in reliance upon the reports of KPMG LLP, independent registered public accounting firm, incorporated by reference herein, and upon the authority of said firm as experts in accounting and auditing.
S-12

TABLE
OF CONTENTS | ||||||||
Page | ||||||||
About this Prospectus | 3 | |||||||
Special Note on Forward-Looking Statements | 4 | |||||||
Risk Factors | 4 | |||||||
Where You Can Find More Information | 4 | |||||||
The Company | 6 | |||||||
Description of Debt Securities | 7 | |||||||
Description of Warrants | 12 | |||||||
Description of Preferred Stock | 15 | |||||||
Description of Units | 18 | |||||||
Description of Common Stock | 19 | |||||||
Form, Exchange and Transfer | 20 | |||||||
Use of Proceeds | 23 | |||||||
Plan of Distribution | 23 | |||||||
Legal Matters | 24 | |||||||
Experts | 25 |