SNEX insider plans sale of 104,934 shares

SNEX reporting person Sean O'Connor filed a Form 144 indicating an intention to sell up to 104,934 shares of common stock through Merrill Lynch, with a proposed sale date of 07/22/2026 on NASDAQ.

Rhea-AI Filing Summary

SNEX reporting person Sean O'Connor filed a Form 144 indicating an intention to sell up to 104,934 shares of common stock through Merrill Lynch, with a proposed sale date of 07/22/2026 on NASDAQ. The filing also lists prior SNEX common stock sales by O'Connor over the past three months, including 140,070 shares on 05/15/2026, 87,790 shares on 05/18/2026, 72,140 shares on 05/19/2026, 75,000 shares on 06/12/2026, and 75,000 shares on 06/15/2026, each with associated reported transaction values.

Key Figures

Proposed shares to be sold: 104,934 shares Sale on 05/15/2026: 140,070 shares Sale on 05/18/2026: 87,790 shares +3 more

6 metrics

Proposed shares to be sold 104,934 shares Common stock proposed for sale on or about 07/22/2026 through Merrill Lynch on NASDAQ

Sale on 05/15/2026 140,070 shares SNEX common stock sold by Sean O'Connor with reported value 15,445,927

Sale on 05/18/2026 87,790 shares SNEX common stock sold by Sean O'Connor with reported value 9,782,517

Sale on 05/19/2026 72,140 shares SNEX common stock sold by Sean O'Connor with reported value 7,928,673

Sale on 06/12/2026 75,000 shares SNEX common stock sold by Sean O'Connor with reported value 9,833,824

Sale on 06/15/2026 75,000 shares SNEX common stock sold by Sean O'Connor with reported value 10,154,313

Key Terms

Form 144, stock plan activity, common stock

3 terms

Form 144 regulatory

"SNEX reporting person Sean O'Connor filed a Form 144 indicating an intention"

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

"Securities To Be Sold Common | 07/22/2026 | Stock Plan Activity | Issuer"

common stock financial

"may sell up to 104,934 shares of common stock through Merrill Lynch"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

FAQ

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

What does SNEX’s latest Form 144 filing disclose?

The Form 144 shows Sean O'Connor may sell up to 104,934 shares of SNEX common stock through Merrill Lynch, with a proposed sale date of 07/22/2026 on NASDAQ, and lists his prior three months of SNEX stock sales.

How many SNEX shares is Sean O’Connor planning to sell under this Form 144?

Sean O'Connor indicates a proposed sale of up to 104,934 shares of SNEX common stock. These shares are to be sold through Merrill Lynch, with the contemplated transaction date reported as 07/22/2026 on NASDAQ.

Which broker is handling the proposed SNEX share sale for Sean O’Connor?

The proposed sale of up to 104,934 SNEX shares will be handled by Merrill Lynch, listed at 1800 K St NW, Suite 800, Washington, DC 20006, with the transaction noted for NASDAQ on 07/22/2026.

What SNEX stock sales has Sean O’Connor made in the past three months?

Sean O'Connor reported SNEX common stock sales of 140,070 shares on 05/15/2026, 87,790 on 05/18/2026, 72,140 on 05/19/2026, 75,000 on 06/12/2026, and 75,000 on 06/15/2026, each with a corresponding value figure.

On which market will the proposed SNEX Form 144 sale occur?

The filing states that the proposed sale of up to 104,934 SNEX common shares by Sean O'Connor is associated with trading on NASDAQ, with the indicated transaction date of 07/22/2026.

Is the SNEX Form 144 sale related to stock plan activity?

Yes. The securities to be sold section labels the planned transaction involving up to 104,934 SNEX shares as “Stock Plan Activity”, with the issuer identified as the source for these common shares.

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

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Available on EDGAR 07/22/2026 - 05:25 PM Accepted by SEC EDGAR 07/22/2026 - 05:25 PM Learn about SEC filing dates

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	0001208362
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	Sean O'Connor
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	104934	7796458	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			104934	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
Sean O'Connor 230 Park Ave 10th Floor New York NY 10169	Common	06/15/2026	75000	10154313
Sean O'Connor 230 Park Ave 10th Floor New York NY 10169	Common	06/12/2026	75000	9833824
Sean O'Connor 230 Park Ave 10th Floor New York NY 10169	Common	05/19/2026	72140	7928673
Sean O'Connor 230 Park Ave 10th Floor New York NY 10169	Common	05/18/2026	87790	9782517
Sean O'Connor 230 Park Ave 10th Floor New York NY 10169	Common	05/15/2026	140070	15445927

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	02/13/2026
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	Sean O'Connor
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)