StoneX officer Sean O’Connor proposes $4.59M sale

O’Connor’s prior three-month sales included 104,934 common shares on July 22, 2026, with reported gross proceeds of $7,796,458.

Rhea-AI Filing Summary

StoneX Group Inc. (SNEX) officer Sean O’Connor reported a proposed sale of 76,148 common shares, with October 12, 2026, listed as the approximate sale date and Merrill Lynch listed as broker. The reported aggregate market value is $4,593,476. O’Connor’s sales during the prior three months included 104,934 shares on July 22, 2026, for reported gross proceeds of $7,796,458.

Key Figures

Proposed common shares to be sold: 76,148 shares Aggregate market value: $4,593,476 Shares outstanding: 120,616,735 shares +2 more

5 metrics

Proposed common shares to be sold 76,148 shares Approximate sale date: October 12, 2026

Aggregate market value $4,593,476 Proposed sale

Shares outstanding 120,616,735 shares Listed in the securities information

Shares sold in prior three months 104,934 shares Sale date: July 22, 2026

Gross proceeds from prior sale $7,796,458 Sale date: July 22, 2026

Key Terms

Rule 144, Stock Plan Activity, Securities To Be Sold

3 terms

Rule 144 regulatory

"definition of "person" in paragraph (a) of Rule 144"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Stock Plan Activity financial

"Stock Plan Activity"

Securities To Be Sold regulatory

"144: Securities To Be Sold"

FAQ

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

How many SNEX shares did Sean O’Connor report for sale?

Sean O’Connor reported a proposed sale of 76,148 StoneX common shares, with October 12, 2026, listed as the approximate sale date. The reported aggregate market value is $4,593,476, and Merrill Lynch is listed as broker.

How many SNEX shares had Sean O’Connor sold in the prior three months?

The listed prior-period sale was 104,934 common shares on July 22, 2026, with reported gross proceeds of $7,796,458.

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

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Available on EDGAR 10/13/2026 - 09:12 AM EDT Accepted by SEC EDGAR 10/13/2026 - 09:12 AM 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
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	76148	4593476	120616735	10/12/2026	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	10/12/2026	Stock Plan Activity	Issuer			76148	10/12/2026	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	07/22/2026	104934	7796458

144: Remarks and Signature

Remarks
Date of Notice	10/12/2026
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)