SNEX

intl-202602040000913760false00009137602026-02-042026-02-04

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 4, 2026

StoneX Group Inc. (Exact name of registrant as specified in its charter)

Delaware000-2355459-2921318 (State of Incorporation)(Commission File Number)(IRS Employer ID No.)

230 Park Ave, 10th Floor New York, NY 10169 (Address of principal executive offices, including Zip Code) (212) 485-3500 (Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to rule 14d-2(b) under the Exchange Act 17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of Each ClassTrading SymbolName of each exchange on which registered Common Stock, $0.01 par valueSNEXThe Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Item 2.02. Results of Operations and Financial Condition On February 4, 2026, the StoneX Group Inc. (the “Company”) issued a press release on the subject of the Company's results of operations and financial condition for the fiscal quarter ended December 31, 2025. The press release is attached hereto as Exhibit 99.1 and incorporated by reference herein. The information furnished under this Item 2.02, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing. Item 8.01. Other Events On February 3, 2026, the Company’s Board of Directors approved a three-for-two split of its common stock. The stock split will be effected as a stock dividend entitling each stockholder of record to receive one additional share of common stock for every two shares owned. Additional shares issued as a result of the stock dividend will be distributed after close of trading on March 20, 2026, to stockholders of record at the close of business on March 10, 2026. Cash will be distributed in lieu of fractional shares based on the opening price of a share of common stock on March 11, 2026. Trading is expected to begin on a stock split-adjusted basis at market open on March 23, 2026. Item 9.01. Financial Statements and Exhibits (d) Exhibits Exhibit No. 99.1     Press release dated February 4, 2026. 104    Cover Page Interactive Data File (embedded within the Inline XBRL document).

Signature Pursuant to the Requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this Report to be signed on its behalf by the Undersigned hereunto duly authorized.

StoneX Group Inc. (Registrant) February 4, 2026/s/ WILLIAM J. DUNAWAY (Date)William J. Dunaway Chief Financial Officer

intl-202511240000913760false00009137602025-11-242025-11-24

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 24, 2025

StoneX Group Inc. (Exact name of registrant as specified in its charter)

Delaware000-2355459-2921318 (State of Incorporation)(Commission File Number)(IRS Employer ID No.)

230 Park Ave, 10th Floor New York, NY 10169 (Address of principal executive offices, including Zip Code) (212) 485-3500 (Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to rule 14d-2(b) under the Exchange Act 17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of Each ClassTrading SymbolName of each exchange on which registered Common Stock, $0.01 par valueSNEXThe Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Item 2.02. Results of Operations and Financial Condition On November 24, 2025, the StoneX Group Inc. (the “Company”) issued a press release on the subject of the Company's results of operations and financial condition for the fiscal quarter ended September 30, 2025. The press release is attached hereto as Exhibit 99.1 and incorporated by reference herein. The information furnished under this Item 2.02, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing. Item 9.01. Financial Statements and Exhibits (d) Exhibits Exhibit No. 99.1     Press release dated November 24, 2025. 104    Cover Page Interactive Data File (embedded within the Inline XBRL document).

Signature Pursuant to the Requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this Report to be signed on its behalf by the Undersigned hereunto duly authorized.

StoneX Group Inc. (Registrant) November 24, 2025/s/ WILLIAM J. DUNAWAY (Date)William J. Dunaway Chief Financial Officer

intl-202508050000913760false00009137602025-08-052025-08-05

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 5, 2025

StoneX Group Inc. (Exact name of registrant as specified in its charter)

Delaware000-2355459-2921318 (State of Incorporation)(Commission File Number)(IRS Employer ID No.)

230 Park Ave, 10th Floor New York, NY 10169 (Address of principal executive offices, including Zip Code) (212) 485-3500 (Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to rule 14d-2(b) under the Exchange Act 17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of Each ClassTrading SymbolName of each exchange on which registered Common Stock, $0.01 par valueSNEXThe Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Item 2.02. Results of Operations and Financial Condition On August 5, 2025, the StoneX Group Inc. (the “Company”) issued a press release on the subject of the Company's results of operations and financial condition for the fiscal quarter ended June 30, 2025. The press release is attached hereto as Exhibit 99.1 and incorporated by reference herein. The information furnished under this Item 2.02, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing. Item 9.01. Financial Statements and Exhibits (d) Exhibits Exhibit No. 99.1     Press release dated August 5, 2025. 104    Cover Page Interactive Data File (embedded within the Inline XBRL document).

Signature Pursuant to the Requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this Report to be signed on its behalf by the Undersigned hereunto duly authorized.

StoneX Group Inc. (Registrant) August 5, 2025/s/ WILLIAM J. DUNAWAY (Date)William J. Dunaway Chief Financial Officer

intl-202505070000913760false00009137602025-05-072025-05-07

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 7, 2025

StoneX Group Inc. (Exact name of registrant as specified in its charter)

Delaware000-2355459-2921318 (State of Incorporation)(Commission File Number)(IRS Employer ID No.)

230 Park Ave, 10th Floor New York, NY 10169 (Address of principal executive offices, including Zip Code) (212) 485-3500 (Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to rule 14d-2(b) under the Exchange Act 17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of Each ClassTrading SymbolName of each exchange on which registered Common Stock, $0.01 par valueSNEXThe Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Item 2.02. Results of Operations and Financial Condition On May 7, 2025, the StoneX Group Inc. (the “Company”) issued a press release on the subject of the Company's results of operations and financial condition for the fiscal quarter ended March 31, 2025. The press release is attached hereto as Exhibit 99.1 and incorporated by reference herein. The information furnished under this Item 2.02, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing. Item 9.01. Financial Statements and Exhibits (d) Exhibits Exhibit No. 99.1     Press release dated May 7, 2025. 104    Cover Page Interactive Data File (embedded within the Inline XBRL document).

Signature Pursuant to the Requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this Report to be signed on its behalf by the Undersigned hereunto duly authorized.

StoneX Group Inc. (Registrant) May 7, 2025/s/ WILLIAM J. DUNAWAY (Date)William J. Dunaway Chief Financial Officer

intl-202502050000913760false00009137602025-02-052025-02-05

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 5, 2025

StoneX Group Inc. (Exact name of registrant as specified in its charter)

Delaware000-2355459-2921318 (State of Incorporation)(Commission File Number)(IRS Employer ID No.)

230 Park Ave, 10th Floor New York, NY 10169 (Address of principal executive offices, including Zip Code) (212) 485-3500 (Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to rule 14d-2(b) under the Exchange Act 17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of Each ClassTrading SymbolName of each exchange on which registered Common Stock, $0.01 par valueSNEXThe Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Item 2.02. Results of Operations and Financial Condition On February 5, 2025, the StoneX Group Inc. (the “Company”) issued a press release on the subject of the Company's results of operations and financial condition for the fiscal quarter ended December 31, 2024. The press release is attached hereto as Exhibit 99.1 and incorporated by reference herein. The information furnished under this Item 2.02, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing. Item 8.01. Other Events Also on February 5, 2025, the Company’s Board of Directors approved a three-for-two split of its common stock. The stock split will be effected as a stock dividend entitling each stockholder of record to receive one additional share of common stock for every two shares owned. Additional shares issued as a result of the stock dividend will be distributed after close of trading on March 21, 2025, to stockholders of record at the close of business on March 11, 2025. Cash will be distributed in lieu of fractional shares based on the opening price of a share of common stock on March 12, 2025. Trading is expected to begin on a stock split-adjusted basis at market open on March 24, 2025. Item 9.01. Financial Statements and Exhibits (d) Exhibits Exhibit No. 99.1     Press release dated February 5, 2025. 104    Cover Page Interactive Data File (embedded within the Inline XBRL document).

Signature Pursuant to the Requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this Report to be signed on its behalf by the Undersigned hereunto duly authorized.

StoneX Group Inc. (Registrant) February 5, 2025/s/ WILLIAM DUNAWAY (Date)William Dunaway Chief Financial Officer

intl-202411190000913760false00009137602024-11-192024-11-19

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 19, 2024

StoneX Group Inc. (Exact name of registrant as specified in its charter)

Delaware000-2355459-2921318 (State of Incorporation)(Commission File Number)(IRS Employer ID No.)

230 Park Ave, 10th Floor New York, NY 10169 (Address of principal executive offices, including Zip Code) (212) 485-3500 (Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to rule 14d-2(b) under the Exchange Act 17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of Each ClassTrading SymbolName of each exchange on which registered Common Stock, $0.01 par valueSNEXThe Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Item 2.02. Results of Operations and Financial Condition On November 19, 2024, the Company issued a press release on the subject of the Company's results of operations and financial condition for the fiscal quarter ended September 30, 2024. The press release is attached hereto as Exhibit 99.1 and incorporated by reference herein. The information furnished under this Item 2.02, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing. Item 9.01. Financial Statements and Exhibits (d) Exhibits Exhibit No. 99.1     Press release dated November 19, 2024. 104    Cover Page Interactive Data File (embedded within the Inline XBRL document).

Signature Pursuant to the Requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this Report to be signed on its behalf by the Undersigned hereunto duly authorized.

StoneX Group Inc. (Registrant) November 19, 2024/s/ WILLIAM J. DUNAWAY (Date)William J. Dunaway Chief Financial Officer

intl-202408060000913760false00009137602024-08-062024-08-06

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 6, 2024

StoneX Group Inc. (Exact name of registrant as specified in its charter)

Delaware000-2355459-2921318 (State of Incorporation)(Commission File Number)(IRS Employer ID No.)

230 Park Ave, 10th Floor New York, NY 10169 (Address of principal executive offices, including Zip Code) (212) 485-3500 (Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to rule 14d-2(b) under the Exchange Act 17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of Each ClassTrading SymbolName of each exchange on which registered Common Stock, $0.01 par valueSNEXThe Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Item 2.02. Results of Operations and Financial Condition On August 6, 2024, the Company issued a news release on the subject of the Company's results of operations and financial condition for the fiscal quarter ended June 30, 2024. The press release is attached hereto as Exhibit 99.1 and incorporated by reference herein. The information furnished under this Item 2.02, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing. Item 9.01. Financial Statements and Exhibits (d) Exhibits Exhibit No. 99.1     Press release dated August 6, 2024. 104    Cover Page Interactive Data File (embedded within the Inline XBRL document).

Signature Pursuant to the Requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this Report to be signed on its behalf by the Undersigned hereunto duly authorized.

StoneX Group Inc. (Registrant) August 6, 2024/s/ WILLIAM J. DUNAWAY (Date)William J. Dunaway Chief Financial Officer

intl-202405080000913760false00009137602024-05-082024-05-08

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 8, 2024

StoneX Group Inc. (Exact name of registrant as specified in its charter)

Delaware000-2355459-2921318 (State of Incorporation)(Commission File Number)(IRS Employer ID No.)

230 Park Ave, 10th Floor New York, NY 10169 (Address of principal executive offices, including Zip Code) (212) 485-3500 (Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to rule 14d-2(b) under the Exchange Act 17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of Each ClassTrading SymbolName of each exchange on which registered Common Stock, $0.01 par valueSNEXThe Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Item 2.02. Results of Operations and Financial Condition On May 8, 2024, the Company issued a news release on the subject of the Company's results of operations and financial condition for the fiscal quarter ended March 31, 2024. The press release is attached hereto as Exhibit 99.1 and incorporated by reference herein. The information furnished under this Item 2.02, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing. Item 9.01. Financial Statements and Exhibits (d) Exhibits Exhibit No. 99.1     Press release dated May 8, 2024. 104    Cover Page Interactive Data File (embedded within the Inline XBRL document).

Signature Pursuant to the Requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this Report to be signed on its behalf by the Undersigned hereunto duly authorized.

StoneX Group Inc. (Registrant) May 8, 2024/s/ WILLIAM J. DUNAWAY (Date)William J. Dunaway Chief Financial Officer

intl-202402060000913760false00009137602024-02-062024-02-06

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 6, 2024

StoneX Group Inc. (Exact name of registrant as specified in its charter)

Delaware000-2355459-2921318 (State of Incorporation)(Commission File Number)(IRS Employer ID No.)

230 Park Ave, 10th Floor New York, NY 10169 (Address of principal executive offices, including Zip Code) (212) 485-3500 (Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to rule 14d-2(b) under the Exchange Act 17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of Each ClassTrading SymbolName of each exchange on which registered Common Stock, $0.01 par valueSNEXThe Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Item 2.02. Results of Operations and Financial Condition On February 6, 2024, the Company issued a news release on the subject of the Company's results of operations and financial condition for the fiscal quarter ended December 31, 2023. The press release is attached hereto as Exhibit 99.1 and incorporated by reference herein. The information furnished under this Item 2.02, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing. Item 9.01. Financial Statements and Exhibits (d) Exhibits Exhibit No. 99.1     Press release dated February 6, 2024. 104    Cover Page Interactive Data File (embedded within the Inline XBRL document).

Signature Pursuant to the Requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this Report to be signed on its behalf by the Undersigned hereunto duly authorized.

StoneX Group Inc. (Registrant) February 6, 2024/s/ WILLIAM J. DUNAWAY (Date)William J. Dunaway Chief Financial Officer

intl-202311150000913760false00009137602023-11-152023-11-15

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 15, 2023

StoneX Group Inc. (Exact name of registrant as specified in its charter)

Delaware000-2355459-2921318 (State of Incorporation)(Commission File Number)(IRS Employer ID No.)

230 Park Ave, 10th Floor New York, NY 10169 (Address of principal executive offices, including Zip Code) (212) 485-3500 (Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to rule 14d-2(b) under the Exchange Act 17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of Each ClassTrading SymbolName of each exchange on which registered Common Stock, $0.01 par valueSNEXThe Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Item 2.02. Results of Operations and Financial Condition On November 15, 2023, the Company issued a news release on the subject of the Company's results of operations and financial condition for the fiscal quarter ended September 30, 2023. The press release is attached hereto as Exhibit 99.1 and incorporated by reference herein. The information furnished under this Item 2.02, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing. Item 9.01. Financial Statements and Exhibits (d) Exhibits Exhibit No. 99.1     Press release dated November 15, 2023. 104    Cover Page Interactive Data File (embedded within the Inline XBRL document).

Signature Pursuant to the Requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this Report to be signed on its behalf by the Undersigned hereunto duly authorized.

StoneX Group Inc. (Registrant) November 15, 2023/s/ WILLIAM J. DUNAWAY (Date)William J. Dunaway Chief Financial Officer

intl-202308020000913760false00009137602023-08-022023-08-02

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 2, 2023

StoneX Group Inc. (Exact name of registrant as specified in its charter)

Delaware000-2355459-2921318 (State of Incorporation)(Commission File Number)(IRS Employer ID No.)

230 Park Ave, 10th Floor New York, NY 10169 (Address of principal executive offices, including Zip Code) (212) 485-3500 (Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to rule 14d-2(b) under the Exchange Act 17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of Each ClassTrading SymbolName of each exchange on which registered Common Stock, $0.01 par valueSNEXThe Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Item 2.02. Results of Operations and Financial Condition On August 2, 2023, the Company issued a news release on the subject of the Company's results of operations and financial condition for the fiscal quarter ended June 30, 2023. The press release is attached hereto as Exhibit 99.1 and incorporated by reference herein. The information furnished under this Item 2.02, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing. Item 9.01. Financial Statements and Exhibits (d) Exhibits Exhibit No. 99.1     Press release dated August 2, 2023. 104    Cover Page Interactive Data File (embedded within the Inline XBRL document).

Signature Pursuant to the Requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this Report to be signed on its behalf by the Undersigned hereunto duly authorized.

StoneX Group Inc. (Registrant) August 2, 2023/s/ WILLIAM J. DUNAWAY (Date)William J. Dunaway Chief Financial Officer

intl-202305030000913760false00009137602023-05-032023-05-03

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 3, 2023

StoneX Group Inc. (Exact name of registrant as specified in its charter)

Delaware000-2355459-2921318 (State of Incorporation)(Commission File Number)(IRS Employer ID No.)

230 Park Ave, 10th Floor New York, NY 10169 (Address of principal executive offices, including Zip Code) (212) 485-3500 (Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to rule 14d-2(b) under the Exchange Act 17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of Each ClassTrading SymbolName of each exchange on which registered Common Stock, $0.01 par valueSNEXThe Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Item 2.02. Results of Operations and Financial Condition On May 3, 2023, the Company issued a news release on the subject of the Company's results of operations and financial condition for the fiscal quarter ended March 31, 2023. The press release is attached hereto as Exhibit 99.1 and incorporated by reference herein. The information furnished under this Item 2.02, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing. Item 9.01. Financial Statements and Exhibits (d) Exhibits Exhibit No. 99.1     Press release dated May 3, 2023. 104    Cover Page Interactive Data File (embedded within the Inline XBRL document).

Signature Pursuant to the Requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this Report to be signed on its behalf by the Undersigned hereunto duly authorized.

StoneX Group Inc. (Registrant) May 3, 2023/s/ WILLIAM J. DUNAWAY (Date)William J. Dunaway Chief Financial Officer

intl-202302070000913760false00009137602023-02-072023-02-07

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 7, 2023

StoneX Group Inc. (Exact name of registrant as specified in its charter)

Delaware000-2355459-2921318 (State of Incorporation)(Commission File Number)(IRS Employer ID No.)

230 Park Ave, 10th Floor New York, NY 10169 (Address of principal executive offices, including Zip Code) (212) 485-3500 (Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to rule 14d-2(b) under the Exchange Act 17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of Each ClassTrading SymbolName of each exchange on which registered Common Stock, $0.01 par valueSNEXThe Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Item 2.02. Results of Operations and Financial Condition On February 7, 2023, the Company issued a news release on the subject of the Company's results of operations and financial condition for the fiscal quarter ended December 31, 2022. The press release is attached hereto as Exhibit 99.1 and incorporated by reference herein. The information furnished under this Item 2.02, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing. Item 9.01. Financial Statements and Exhibits (d) Exhibits Exhibit No. 99.1     Press release dated February 7, 2023. 104    Cover Page Interactive Data File (embedded within the Inline XBRL document).

Signature Pursuant to the Requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this Report to be signed on its behalf by the Undersigned hereunto duly authorized.

StoneX Group Inc. (Registrant) February 7, 2023/s/ WILLIAM J. DUNAWAY (Date)William J. Dunaway Chief Financial Officer

intl-202211210000913760false00009137602022-11-212022-11-21

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 21, 2022

StoneX Group Inc. (Exact name of registrant as specified in its charter)

Delaware000-2355459-2921318 (State of Incorporation)(Commission File Number)(IRS Employer ID No.)

230 Park Ave, 10th Floor New York, NY 10169 (Address of principal executive offices, including Zip Code) (212) 485-3500 (Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to rule 14d-2(b) under the Exchange Act 17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of Each ClassTrading SymbolName of each exchange on which registered Common Stock, $0.01 par valueSNEXThe Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Item 2.02. Results of Operations and Financial Condition On November 21, 2022, the Company issued a news release on the subject of the Company's results of operations and financial condition for the fiscal quarter ended September 30, 2022. The press release is attached hereto as Exhibit 99.1 and incorporated by reference herein. The information furnished under this Item 2.02, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing. Item 9.01. Financial Statements and Exhibits (d) Exhibits Exhibit No. 99.1     Press release dated November 21, 2022. 104    Cover Page Interactive Data File (embedded within the Inline XBRL document).

Signature Pursuant to the Requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this Report to be signed on its behalf by the Undersigned hereunto duly authorized.

StoneX Group Inc. (Registrant) November 21, 2022/s/ WILLIAM J. DUNAWAY (Date)William J. Dunaway Chief Financial Officer

8-K 1 stonex_8kx2022q3xer.htm 8-K

Document

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 3, 2022

StoneX Group Inc. (Exact name of registrant as specified in its charter)

Delaware000-2355459-2921318 (State of Incorporation)(Commission File Number)(IRS Employer ID No.)

230 Park Ave, 10th Floor New York, NY 10169 (Address of principal executive offices, including Zip Code) (212) 485-3500 (Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to rule 14d-2(b) under the Exchange Act 17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of Each ClassTrading SymbolName of each exchange on which registered Common Stock, $0.01 par valueSNEXThe Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Item 2.02. Results of Operations and Financial Condition On August 3, 2022, the Company issued a news release on the subject of the Company's results of operations and financial condition for the fiscal quarter ended June 30, 2022. The press release is attached hereto as Exhibit 99.1 and incorporated by reference herein. The information furnished under this Item 2.02, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing. Item 9.01. Financial Statements and Exhibits (d) Exhibits Exhibit No. 99.1     Press release dated August 3, 2022. 104    Cover Page Interactive Data File (embedded within the Inline XBRL document).

Signature Pursuant to the Requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this Report to be signed on its behalf by the Undersigned hereunto duly authorized.

StoneX Group Inc. (Registrant) August 3, 2022/s/ WILLIAM J. DUNAWAY (Date)William J. Dunaway Chief Financial Officer

intl-202205040000913760false00009137602022-05-042022-05-04

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 4, 2022

StoneX Group Inc. (Exact name of registrant as specified in its charter)

Delaware000-2355459-2921318 (State of Incorporation)(Commission File Number)(IRS Employer ID No.)

230 Park Ave, 10th Floor New York, NY 10169 (Address of principal executive offices, including Zip Code) (212) 485-3500 (Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to rule 14d-2(b) under the Exchange Act 17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of Each ClassTrading SymbolName of each exchange on which registered Common Stock, $0.01 par valueSNEXThe Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Item 2.02. Results of Operations and Financial Condition On May 4, 2022, the Company issued a news release on the subject of the Company's results of operations and financial condition for the fiscal quarter ended March 31, 2022. The press release is attached hereto as Exhibit 99.1 and incorporated by reference herein. The information furnished under this Item 2.02, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing. Item 9.01. Financial Statements and Exhibits (d) Exhibits Exhibit No. 99.1     Press release dated May 4, 2022. 104    Cover Page Interactive Data File (embedded within the Inline XBRL document).

Signature Pursuant to the Requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this Report to be signed on its behalf by the Undersigned hereunto duly authorized.

StoneX Group Inc. (Registrant) May 4, 2022/s/ WILLIAM J. DUNAWAY (Date)William J. Dunaway Chief Financial Officer

intl-202202070000913760false00009137602022-02-072022-02-07

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 7, 2022

StoneX Group Inc. (Exact name of registrant as specified in its charter)

Delaware000-2355459-2921318 (State of Incorporation)(Commission File Number)(IRS Employer ID No.)

230 Park Ave, 10th Floor New York, NY 10169 (Address of principal executive offices, including Zip Code) (212) 485-3500 (Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to rule 14d-2(b) under the Exchange Act 17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of Each ClassTrading SymbolName of each exchange on which registered Common Stock, $0.01 par valueSNEXThe Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Item 2.02. Results of Operations and Financial Condition On February 7, 2022, the Company issued a news release on the subject of the Company's results of operations and financial condition for the fiscal quarter ended December 31, 2021. The press release is attached hereto as Exhibit 99.1. The information furnished under this Item 2.02, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing. Item 9.01. Financial Statements and Exhibits (d) Exhibits Exhibit No. 99.1     Press release dated February 7, 2022. 104    Cover Page Interactive Data File (embedded within the Inline XBRL document).

Signature Pursuant to the Requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this Report to be signed on its behalf by the Undersigned hereunto duly authorized.

StoneX Group Inc. (Registrant) February 7, 2022/s/ WILLIAM J. DUNAWAY (Date)William J. Dunaway Chief Financial Officer

intl-202111290000913760false00009137602021-11-292021-11-29

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 29, 2021

StoneX Group Inc. (Exact name of registrant as specified in its charter)

Delaware000-2355459-2921318 (State of Incorporation)(Commission File Number)(IRS Employer ID No.)

230 Park Ave, 10th Floor New York, NY 10169 (Address of principal executive offices, including Zip Code) (212) 485-3500 (Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to rule 14d-2(b) under the Exchange Act 17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of Each ClassTrading SymbolName of each exchange on which registered Common Stock, $0.01 par valueSNEXThe Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Item 2.02. Results of Operations and Financial Condition On November 29, 2021, the Company issued a news release on the subject of the Company's results of operations and financial condition for the fiscal quarter ended September 30, 2021. The press release is attached hereto as Exhibit 99.1. The information furnished under this Item 2.02, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing. Item 9.01. Financial Statements and Exhibits Exhibit 99.1 Press release dated November 29, 2021.

Signature Pursuant to the Requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this Report to be signed on its behalf by the Undersigned hereunto duly authorized.

StoneX Group Inc. (Registrant) November 29, 2021/s/ WILLIAM J. DUNAWAY (Date)William J. Dunaway Chief Financial Officer

intl-202108090000913760false00009137602021-08-092021-08-09

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 9, 2021

StoneX Group Inc. (Exact name of registrant as specified in its charter)

Delaware000-2355459-2921318 (State of Incorporation)(Commission File Number)(IRS Employer ID No.)

230 Park Ave, 10th Floor New York, NY 10169 (Address of principal executive offices, including Zip Code) (212) 485-3500 (Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to rule 14d-2(b) under the Exchange Act 17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of Each ClassTrading SymbolName of each exchange on which registered Common Stock, $0.01 par valueSNEXThe Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Item 2.02. Results of Operations and Financial Condition On August 9, 2021, the Company issued a news release on the subject of the Company's results of operations and financial condition for the fiscal quarter ended June 30, 2021. The press release is attached hereto as Exhibit 99.1. The information furnished under this Item 2.02, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing. Item 9.01. Financial Statements and Exhibits Exhibit 99.1 Press release dated August 9, 2021.

Signature Pursuant to the Requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this Report to be signed on its behalf by the Undersigned hereunto duly authorized.

StoneX Group Inc. (Registrant) August 9, 2021/s/ WILLIAM J. DUNAWAY (Date)William J. Dunaway Chief Financial Officer

intl-202105100000913760false00009137602021-05-102021-05-10

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 10, 2021

StoneX Group Inc. (Exact name of registrant as specified in its charter)

Delaware000-2355459-2921318 (State of Incorporation)(Commission File Number)(IRS Employer ID No.)

230 Park Ave, 10th Floor New York, NY 10169 (Address of principal executive offices, including Zip Code) (212) 485-3500 (Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to rule 14d-2(b) under the Exchange Act 17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of Each ClassTrading SymbolName of each exchange on which registered Common Stock, $0.01 par valueSNEXThe Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Item 2.02. Results of Operations and Financial Condition On May 10, 2021, the Company issued a news release on the subject of the Company's results of operations and financial condition for the fiscal quarter ended March 31, 2021. The press release is attached hereto as Exhibit 99.1. The information furnished under this Item 2.02, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing. Item 9.01. Financial Statements and Exhibits Exhibit 99.1 Press release dated May 10, 2021.

Signature Pursuant to the Requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this Report to be signed on its behalf by the Undersigned hereunto duly authorized.

StoneX Group Inc. (Registrant) May 10, 2021/s/ WILLIAM J. DUNAWAY (Date)William J. Dunaway Chief Financial Officer