SNEX insider plans sale of 52,376 shares

SNEX reporting person Mark Maurer filed a notice of proposed sale of common stock under Form 144.

Accepted by SEC EDGAR 07/22/2026 - 06:08 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

SNEX reporting person Mark Maurer filed a notice of proposed sale of common stock under Form 144. The filing lists up to 52,376 shares of common stock to be sold through Merrill Lynch, with 79,251,496 shares outstanding as of 07/22/2026 on NASDAQ.

The filing also reports several prior common stock sales during the past three months, including transactions on 05/14/2026, 05/22/2026, 06/15/2026, and 06/16/2026.

Key Figures

Proposed shares to be sold: 52,376 shares Shares outstanding: 79,251,496 shares Prior sale date: 05/14/2026 +2 more

5 metrics

Proposed shares to be sold 52,376 shares Common stock proposed for sale under Form 144

Shares outstanding 79,251,496 shares Common shares outstanding as of 07/22/2026

Prior sale date 05/14/2026 Common stock sale reported in past 3 months section

Prior sale date 05/22/2026 Common stock sale reported in past 3 months section

Prior sale date 06/15/2026 Common stock sale reported in past 3 months section

Key Terms

Form 144, Stock Plan Activity, Securities Sold During The Past 3 Months

3 terms

Form 144 regulatory

"Mark Maurer filed a notice of proposed sale of common stock under Form 144"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Stock Plan Activity financial

"Common | 07/22/2026 | Stock Plan Activity | Issuer"

Securities Sold During The Past 3 Months regulatory

"144: Securities Sold During The Past 3 Months"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the Form 144 filing by SNEX indicate?

The Form 144 filing shows that Mark Maurer has given notice of a proposed sale of 52,376 shares of SNEX common stock through Merrill Lynch, with the company’s shares listed on NASDAQ.

How many SNEX shares are proposed to be sold in this Form 144?

The filing states a proposed sale of 52,376 shares of SNEX common stock. This amount appears in the securities information section describing the common stock to be sold through Merrill Lynch.

How many SNEX shares were outstanding as of July 22, 2026?

The Form 144 reports that 79,251,496 shares of SNEX common stock were outstanding as of 07/22/2026. This figure serves as context and is not the number of shares being sold.

What recent SNEX stock sales are disclosed in the past 3 months section?

The filing lists prior common stock sales by Mark Maurer on 05/14/2026, 05/22/2026, 06/15/2026, and 06/16/2026, each showing the number of common shares sold on those specific dates.

Who is the broker for the proposed SNEX share sale in the Form 144?

The proposed sale of 52,376 SNEX common shares is associated with Merrill Lynch, listed with an address in Washington, DC, in the securities information section of the Form 144.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001662210
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	StoneX Group Inc.
SEC File Number
Address of Issuer	230 Park Ave, 10th Floor New York NEW YORK 10169
Phone	2124853500
Name of Person for Whose Account the Securities are To Be Sold	Mark Maurer
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Merrill Lynch 1800 K ST NW Suite 800 Washington DC 20006	52376	3891026	79251496	07/22/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	07/22/2026	Stock Plan Activity	Issuer			52376	07/22/2026	n/a

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Mark Maurer 230 Park Ave 10th Floor New York NY 10169	Common	06/16/2026	11542	1541954
Mark Maurer 230 Park Ave 10th Floor New York NY 10169	Common	06/15/2026	34706	4694738
Mark Maurer 230 Park Ave 10th Floor New York NY 10169	Common	05/22/2026	11398	1279005
Mark Maurer 230 Park Ave 10th Floor New York NY 10169	Common	05/14/2026	34862	4053118

144: Remarks and Signature

Remarks
Date of Notice	07/22/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	02/12/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	Mark Maurer
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)