StoneX Group (SNEX) exec exercises options and sells 300K shares

Rhea-AI Filing Summary

StoneX Group Inc. Executive Vice-Chairman Sean Michael O’Connor reported exercising stock options and selling shares of common stock. Over three days, he exercised options for a total of 300,000 shares at an exercise price of $13.34 per share and sold 300,000 shares in open-market transactions at prices around $110–$111 per share.

After these transactions, he holds 1,236,921 shares of StoneX common stock directly. He also reports indirect ownership of 2,543,964 shares through Darseaker Limited and 424,353 shares held by a trust. No remaining stock options are shown in this filing after the exercises.

Insider Trade Summary 10b5-1

Net Seller: 300,000 shares ($33,166,803)

Net Sell 11 txns

Insider OCONNOR SEAN MICHAEL

Role Executive Vice-Chairman-Board

Sold 300,000 shs ($33.17M)

Type	Security	Shares	Price	Value
Exercise	Stock Options	72,140	$0.00	--
Exercise	Common Stock	72,140	$13.34	$962K
Sale	Common Stock	72,140	$109.939	$7.93M
Exercise	Stock Options	87,790	$0.00	--
Exercise	Common Stock	87,790	$13.34	$1.17M
Sale	Common Stock	87,790	$111.4632	$9.79M
Exercise	Stock Options	140,070	$0.00	--
Exercise	Common Stock	140,070	$13.34	$1.87M
Sale	Common Stock	140,070	$110.3052	$15.45M
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Stock Options — 1,267,500 shares (Direct, null); Common Stock — 1,309,061 shares (Direct, null); Common Stock — 424,353 shares (Indirect, By Trust)

Footnotes (1)

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Key Figures

Shares sold: 300,000 shares Option exercise shares: 300,000 shares Exercise price: $13.34 per share +5 more

8 metrics

Shares sold 300,000 shares Total open-market sales of StoneX common stock

Option exercise shares 300,000 shares Total shares acquired via option exercises

Exercise price $13.34 per share Conversion or exercise price of stock options

Sale price 15 May $110.3052 per share Average sale price for 140,070 shares of common stock

Sale price 18 May $111.4632 per share Average sale price for 87,790 shares of common stock

Sale price 19 May $109.9390 per share Average sale price for 72,140 shares of common stock

Direct holdings after trades 1,236,921 shares Directly owned StoneX common stock following transactions

Indirect holdings 2,543,964 + 424,353 shares Indirect ownership via Darseaker Limited and a trust

Key Terms

open-market sale, derivative exercise/conversion, Stock Options, indirect ownership, +1 more

5 terms

open-market sale financial

"transaction_action": "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

derivative exercise/conversion financial

"transaction_action": "derivative exercise/conversion""

Stock Options financial

""security_title": "Stock Options""

Stock options are agreements that give a person the right to buy or sell a company's stock at a specific price within a certain time frame. They are often used as a reward or incentive, similar to a coupon that can be used later if the stock price rises, allowing the holder to make a profit.

indirect ownership financial

""ownership_type": "indirect""

average price financial

"The price reported represents an average price."

Form 4 Insider Transactions: What Each Field Means →

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).

X

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 NEW YORK 10169

(City) (State) (Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/15/2026

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

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

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

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	05/15/2026		M		140,070	A	$13.34	1,376,991	D
Common Stock	05/15/2026		S		140,070	D	$110.3052(1)	1,236,921	D
Common Stock	05/18/2026		M		87,790	A	$13.34	1,324,711	D
Common Stock	05/18/2026		S		87,790	D	$111.4632(1)	1,236,921	D
Common Stock	05/19/2026		M		72,140	A	$13.34	1,309,061	D
Common Stock	05/19/2026		S		72,140	D	$109.939(1)	1,236,921	D
Common Stock								424,353	I	By Trust
Common Stock								2,543,964	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
Stock Options	$13.34	05/15/2026		M			140,070	12/05/2021	12/05/2026	Common Stock	140,070	$0	1,427,430	D
Stock Options	$13.34	05/18/2026		M			87,790	12/05/2021	12/05/2026	Common Stock	87,790	$0	1,339,640	D
Stock Options	$13.34	05/19/2026		M			72,140	12/05/2021	12/05/2026	Common Stock	72,140	$0	1,267,500	D

Explanation of Responses:

1. The price reported represents an average price. The Reporting Person will provide to the Commission, the issuer and any stockholder, upon request, full information regarding the number of shares sold at each separate price.

Remarks:

	Sean M. O'Connor	05/19/2026
	** 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.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transactions did SNEX executive Sean Michael O’Connor report?

Sean Michael O’Connor reported exercising options for 300,000 StoneX shares at $13.34 and selling 300,000 common shares in open-market trades around $110–$111 per share. The filing shows a combined exercise-and-sell pattern over three consecutive days.

How many StoneX (SNEX) shares did the insider sell and at what prices?

The insider sold 300,000 StoneX common shares. The reported average sale prices were $110.3052, $111.4632, and $109.9390 per share on separate trades, with a footnote stating each figure is an average price across multiple individual transactions.

What stock options did the StoneX (SNEX) executive exercise?

He exercised stock options covering 300,000 StoneX common shares. The options had a conversion or exercise price of $13.34 per share and an expiration date of December 5, 2026, with the underlying security described as StoneX common stock in the filing.

How many SNEX shares does Sean Michael O’Connor hold after these transactions?

Following the reported trades, he owns 1,236,921 StoneX common shares directly. The filing also lists indirect holdings of 2,543,964 shares through Darseaker Limited and 424,353 shares held by a trust, providing a wider view of his total exposure.

Are any of the StoneX (SNEX) holdings reported as indirect ownership?

Yes. The filing shows 2,543,964 StoneX common shares held indirectly through Darseaker Limited and another 424,353 shares held indirectly "By Trust." These positions are labeled as indirect ownership, separate from his directly held shares.

Does the StoneX (SNEX) Form 4 mention how sale prices for the trades were calculated?

The Form 4 states that each reported sale price is an average price. It notes that Sean Michael O’Connor will provide full information about the number of shares sold at each individual price to the Commission, the company, or any stockholder upon request.