[Form 4] StoneX Group Inc. Insider Trading Activity

Rhea-AI Filing Summary

Sean M. O'Connor, Executive Vice-Chairman and Director of StoneX Group Inc. (SNEX), reported two open-market sales of common stock: 3,000 shares sold on 08/19/2025 at $95.00 and 2,000 shares sold on 08/20/2025 at $96.50. After the 08/19 sale he beneficially owned 134,902 shares (indirect, by trust) and after the 08/20 sale he beneficially owned 132,902 shares (indirect, by trust). The filing also shows he beneficially owns 1,019,667 shares directly and 1,695,976 shares indirectly via Darseaker Limited. No derivative transactions were reported.

Positive

• Clear disclosure of transaction dates, prices, and amounts for insider sales
• No derivative transactions reported, simplifying ownership picture
• Both direct and indirect holdings are listed, improving transparency

Negative

• Insider sold shares (5,000 total), reducing indirect trust holdings
• Decrease in trust-held shares from 134,902 to 132,902 after reported trades

Insights

Financial Analyst

TL;DR: Routine insider sales totaling 5,000 shares; not large relative to total reported holdings but worth noting for trading activity.

The Form 4 discloses two small open-market dispositions by Sean M. O'Connor on consecutive days totaling 5,000 shares at prices of $95.00 and $96.50. These transactions reduced his indirect trust holdings from 134,902 to 132,902 shares. The filing shows substantial additional holdings: 1,019,667 shares directly and 1,695,976 indirectly via Darseaker Limited. No options or other derivative instruments are reported, which simplifies ownership structure assessment. For most investors, these sales appear routine and do not by themselves imply a material change in ownership concentration.

Corporate Governance Expert

TL;DR: Disclosure is complete for reported trades; filings meet Section 16 transparency standards.

The Form 4 is properly executed and discloses the reporting person's officer/director status and the specific sale transactions with prices and dates. The report identifies both direct and indirect holdings, including a trust and Darseaker Limited, which helps clarify control pathways. There are no amendments or derivative grants noted. From a governance perspective, the filing provides the required transparency for insider trading monitoring; the size of the trades is modest relative to reported aggregate holdings.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

OCONNOR SEAN MICHAEL

(Last) (First) (Middle)

230 PARK AVENUE

10TH FLOOR

(Street)

NEW YORK NY 10169

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
StoneX Group Inc. [ SNEX ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Executive Vice-Chairman-Board

3. Date of Earliest Transaction (Month/Day/Year)
08/19/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	08/19/2025		S		3,000	D	$95	134,902	I	By Trust
Common Stock	08/20/2025		S		2,000	D	$96.5	132,902	I	By Trust
Common Stock								1,019,667	D
Common Stock								1,695,976	I	Darseaker Limited

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

	Sean M. O'Connor	08/20/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What trades did Sean M. O'Connor report on the Form 4 for SNEX?

He reported selling 3,000 shares on 08/19/2025 at $95.00 and 2,000 shares on 08/20/2025 at $96.50.

How many SNEX shares does Sean M. O'Connor beneficially own after these transactions?

The filing shows 132,902 shares indirectly (by trust) after the 08/20 sale and also lists 1,019,667 shares directly and 1,695,976 shares indirectly via Darseaker Limited.

Were any derivative securities reported on this Form 4 for SNEX?

No. Table II shows no derivative transactions—only non-derivative common stock sales are reported.

What is Sean O'Connor's role at StoneX Group Inc. as stated on the filing?

He is listed as a Director and Executive Vice-Chairman of the Board.

Do these reported sales indicate an amendment to an earlier filing?

No amendment date is provided; the Form indicates these are current reported transactions with no amendment of prior filings.