SNEX Form 144: 75,000 Shares Proposed for Resale

SNEX filed a Form 144 Notice reporting 75,000 shares of Common Stock for sale.

Rhea-AI Filing Summary

SNEX filed a Form 144 Notice reporting 75,000 shares of Common Stock for sale. The filing lists multiple recent dispositions by Sean O'Connor: 140,070 shares on 05/15/2026, 87,790 shares on 05/18/2026, 72,140 shares on 05/19/2026, and 75,000 shares on 06/12/2026.

The document identifies the broker as Merrill Lynch and classifies the transactions as Stock Plan Activity. The filing is a notice of proposed resale by an affiliate; it does not state sale proceeds or timing for the listed shares.

Insights

Securities Counsel

Form 144 notifies the market of proposed affiliate sales; it is an administrative resale filing.

Form 144 is a regulatory notice that an affiliate intends to sell restricted or control securities through a broker-dealer. The filing here lists a specific proposed amount of 75,000 shares and identifies recent dispositions by the same holder.

Because Form 144 is procedural, it does not itself confirm completed sales or cash proceeds. Subsequent transaction reports or brokerage records would show actual execution and cash-flow treatment.

Key Figures

Proposed resale: 75,000 shares Disposition on 05/15/2026: 140,070 shares Disposition on 05/18/2026: 87,790 shares +2 more

5 metrics

Proposed resale 75,000 shares Form 144 cover line

Disposition on 05/15/2026 140,070 shares Sean O'Connor sale listed in past 3 months

Disposition on 05/18/2026 87,790 shares Sean O'Connor sale listed in past 3 months

Disposition on 05/19/2026 72,140 shares Sean O'Connor sale listed in past 3 months

Disposition on 06/12/2026 75,000 shares Sean O'Connor sale listed in past 3 months

Key Terms

Form 144, Stock Plan Activity, Issuer

3 terms

Form 144 regulatory

"144: Securities Sold During The Past 3 Months"

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 | 12/14/2021 | Stock Plan Activity"

Issuer regulatory

"Common | 12/14/2021 | Stock Plan Activity | Issuer"

FAQ

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

What does SNEX's Form 144 report show?

The filing notifies a proposed resale of 75,000 shares of Common Stock. It also lists recent dispositions by Sean O'Connor totaling 475,000 shares across four dates in May–June 2026, as shown in the excerpt.

Who is the selling party named in the SNEX Form 144?

The filing identifies Sean O'Connor as the selling affiliate and shows his address and multiple sale dates. The broker listed for the transaction is Merrill Lynch at the address provided in the excerpt.

Does Form 144 confirm the sales were completed for SNEX shares?

Form 144 reports a proposed sale and recent dispositions but does not by itself confirm settlement or cash received. Actual execution and proceeds require post-trade confirmations or later SEC reports.

Are the listed transactions tied to a stock plan for SNEX?

The excerpt classifies several entries as Stock Plan Activity, with stock-plan-related share counts and grant dates shown. The filing lists those entries but does not describe plan mechanics or proceeds.

Where can I find the dates and sizes of recent SNEX dispositions?

The excerpt lists recent dispositions by Sean O'Connor: 05/15/2026 for 140,070 shares, 05/18/2026 for 87,790 shares, 05/19/2026 for 72,140 shares, and 06/12/2026 for 75,000 shares. These are the dates and sizes shown in the filing.

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

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Accepted by SEC EDGAR 06/15/2026 - 04:21 PM EDT 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	001-36045
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	75000	10154313	79251496	06/15/2026	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	12/14/2021	Stock Plan Activity	Issuer			2341	12/14/2021	n/a
Common	12/13/2021	Stock Plan Activity	Issuer			19618	12/13/2021	n/a
Common	12/14/2017	Stock Plan Activity	Issuer			20671	12/14/2017	n/a
Common	12/14/2018	Stock Plan Activity	Issuer			32370	12/14/2018	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	06/12/2026	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	06/15/2026
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)