SNEX stockholder plans sale of 6.4M shares

A stockholder of SNEX, identified as William Dunaway, filed a notice of proposed sale of common stock under Rule 144.

Rhea-AI Filing Summary

A stockholder of SNEX, identified as William Dunaway, filed a notice of proposed sale of common stock under Rule 144. The filing lists Merrill Lynch as broker for the planned sale of 6,398,761 common shares with an aggregate market value of $120,616,735, targeting sales on or after 08/14/2026 on NASDAQ. It also discloses prior sales over the past three months, including 95,970 shares for $7,130,296 on 07/22/2026, 63,602 shares for $8,339,931 on 06/12/2026, and 64,017 shares for $7,067,525 on 05/15/2026.

Key Figures

Planned shares to be sold: 6,398,761 shares Aggregate market value of planned sale: $120,616,735 Shares sold on 07/22/2026: 95,970 shares +5 more

8 metrics

Planned shares to be sold 6,398,761 shares Common stock to be sold through Merrill Lynch on or after 08/14/2026

Aggregate market value of planned sale $120,616,735 Total market value of 6,398,761 common shares planned for sale

Shares sold on 07/22/2026 95,970 shares Common stock sold for an aggregate of $7,130,296

Aggregate value on 07/22/2026 $7,130,296 Value of 95,970 common shares sold

Shares sold on 06/12/2026 63,602 shares Common stock sold for an aggregate of $8,339,931

Aggregate value on 06/12/2026 $8,339,931 Value of 63,602 common shares sold

Shares sold on 05/15/2026 64,017 shares Common stock sold for an aggregate of $7,067,525

Aggregate value on 05/15/2026 $7,067,525 Value of 64,017 common shares sold

Key Terms

Rule 144, aggregate market value, Securities To Be Sold, Stock Plan Activity

4 terms

Rule 144 regulatory

"filed a notice of proposed sale of common stock under 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.

aggregate market value financial

"with an aggregate market value of $120,616,735"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

Securities To Be Sold regulatory

"144: Securities To Be Sold Common | 08/14/2026 | Stock Plan Activity"

Stock Plan Activity financial

"Common | 08/14/2026 | Stock Plan Activity | Issuer"

FAQ

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

What does the SNEX Form 144 filing by William Dunaway disclose?

It discloses that William Dunaway plans to sell 6,398,761 SNEX common shares through Merrill Lynch, with an aggregate market value of $120,616,735, in transactions expected on or after 08/14/2026 on NASDAQ.

How many SNEX shares are planned to be sold and what is their value?

The filing lists a proposed sale of 6,398,761 SNEX common shares with an aggregate market value of $120,616,735. These shares are to be sold through Merrill Lynch in NASDAQ transactions beginning on or after 08/14/2026.

What SNEX stock sales has William Dunaway made in the past 3 months?

Over the past three months, William Dunaway reported sales of 95,970 shares for $7,130,296 on 07/22/2026, 63,602 shares for $8,339,931 on 06/12/2026, and 64,017 shares for $7,067,525 on 05/15/2026.

Which broker and market are involved in the planned SNEX share sale?

The proposed Rule 144 sale uses Merrill Lynch as broker, with transactions expected to occur on the NASDAQ market. The filing covers SNEX common stock with a planned start date of 08/14/2026.

Is the SNEX Form 144 filing a completed sale or a notice of intent?

This is a notice of intent to sell shares under Rule 144, not confirmation of completed trades. It specifies 6,398,761 shares and an aggregate value of $120,616,735 planned for sale on or after 08/14/2026.

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

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Accepted by SEC EDGAR 08/14/2026 - 05:43 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	0001405955
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	William Dunaway
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	96490	6398761	120616735	08/14/2026	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	08/14/2026	Stock Plan Activity	Issuer			96490	08/14/2026	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
William Dunaway 230 Park Ave 10th Floor New York NY 10169	Common	07/22/2026	95970	7130296
William Dunaway 230 Park Ave 10th Floor New York NY 10169	Common	06/12/2026	63602	8339931
William Dunaway 230 Park Ave 10th Floor New York NY 10169	Common	05/15/2026	64017	7067525

144: Remarks and Signature

Remarks
Date of Notice	08/14/2026
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	William Dunaway
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)