Adage Capital Management, L.P., together with Robert Atchinson and Phillip Gross, reported beneficial ownership of Class A ordinary shares of RMG ML Sports Holdings. Through Adage Capital Partners, L.P., they collectively report beneficial ownership of 1,800,000 Class A ordinary shares, with shared voting and dispositive power over all of these shares and no sole voting or dispositive power.
This position represents 8.23% of the Class A ordinary shares outstanding, based on 21,860,000 Class A ordinary shares outstanding as of June 12, 2026, as referenced from company disclosure. All three reporting persons share the same reported ownership, and the filing clarifies that it does not, by itself, constitute an admission of beneficial ownership beyond what is described.
Positive
None.
Negative
None.
Key Figures
Beneficial ownership:1,800,000 Class A ordinary sharesOwnership percentage:8.23%Shares outstanding:21,860,000 Class A ordinary shares+3 more
6 metrics
Beneficial ownership1,800,000 Class A ordinary sharesShares of RMG ML Sports Holdings reported as beneficially owned by the reporting persons
Ownership percentage8.23%Portion of RMG ML Sports Holdings Class A ordinary shares represented by the 1,800,000-share position
Shares outstanding21,860,000 Class A ordinary sharesOutstanding Class A ordinary shares as of June 12, 2026, used to calculate ownership percentage
Shared voting power1,800,000 sharesNumber of RMG ML Sports Holdings shares over which the reporting persons have shared voting power
Shared dispositive power1,800,000 sharesNumber of shares over which the reporting persons have shared power to dispose or direct disposition
Signature date08/12/2026Date on which the Schedule 13G was signed by each reporting person
Key Terms
beneficial ownership, shared voting power, shared dispositive power, Class A Ordinary Shares, +1 more
5 terms
beneficial ownershipfinancial
"The filing should not be construed as an admission as to beneficial ownership"
Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.
shared voting powerfinancial
"Shared Voting Power 1,800,000.00"
Shared voting power occurs when two or more parties jointly have the right to vote or decide how a block of company shares is cast, like co-owners who must agree before moving a piece of furniture. Investors care because who controls voting rights affects board elections, major corporate decisions and takeover outcomes, and shared control can alter regulatory disclosures and the practical influence any holder has over a company’s direction and value.
shared dispositive powerfinancial
"Shared Dispositive Power 1,800,000.00"
Class A Ordinary Sharesfinancial
"Title of class of securities: Class A Ordinary Shares, par value $0.0001 per share"
Class A ordinary shares are a type of ownership stake in a company that typically grants voting rights to shareholders, allowing them to have a say in important company decisions. They often come with priority in receiving dividends or profits, making them attractive to investors seeking influence and potential income. These shares help distinguish different levels of ownership and rights within a company's stock structure.
CUSIPfinancial
"CUSIP Number(s): G7610P104"
A CUSIP is a nine-character alphanumeric code that uniquely identifies a U.S. or Canadian financial security—such as a stock, bond, or fund share—like a Social Security number for an investment. It matters to investors because brokers, exchanges and record-keepers use the CUSIP to match trades, track ownership, settle transactions and pull accurate records, reducing errors and ensuring money and securities go to the right place.
FAQ
What stake in SHOT does Adage Capital report on this Schedule 13G?
Adage Capital reports beneficial ownership of 1,800,000 Class A ordinary shares of RMG ML Sports Holdings (SHOT), representing 8.23% of the outstanding Class A shares, held through Adage Capital Partners, L.P.
How many RMG ML Sports Holdings (SHOT) shares are outstanding in this filing?
The filing states there are 21,860,000 Class A ordinary shares outstanding of RMG ML Sports Holdings as of June 12, 2026, based on the company’s referenced prospectus and current report.
Who are the reporting persons in the SHOT Schedule 13G filing?
The reporting persons are Adage Capital Management, L.P., Robert Atchinson, and Phillip Gross. They report beneficial ownership of the same 1,800,000 Class A shares of RMG ML Sports Holdings through Adage Capital Partners, L.P.
What voting power does Adage report over SHOT shares?
The reporting persons disclose 0 shares with sole voting power and 1,800,000 shares with shared voting power in RMG ML Sports Holdings, matching their reported beneficial ownership position.
What dispositive power is reported over RMG ML Sports Holdings (SHOT) shares?
They report 0 shares with sole dispositive power and 1,800,000 shares with shared dispositive power, indicating decisions to sell or otherwise dispose of these shares are held on a shared, not individual, basis.
When was the SHOT Schedule 13G for Adage Capital signed?
The signatures by Adage Capital Partners, L.L.C. (through Robert Atchinson), Robert Atchinson individually, and Phillip Gross individually are each dated August 12, 2026.
This statement is filed by:
(i) Adage Capital Management, L.P., a Delaware limited partnership ("ACM"), as the investment manager of Adage Capital Partners, L.P., a Delaware limited partnership ("ACP"), with respect to the Class A ordinary shares, par value $0.0001 per share ("Class A Ordinary Shares") of RMG ML Sports Holdings, a Cayman Islands exempted company (the "Company") directly held by ACP;
(ii) Robert Atchinson ("Mr. Atchinson"), as (1) managing member of Adage Capital Advisors, L.L.C., a limited liability company organized under the laws of the State of Delaware ("ACA"), managing member of Adage Capital Partners GP, L.L.C., a limited liability company organized under the laws of the State of Delaware ("ACPGP"), general partner of ACP, and (2) managing member of Adage Capital Partners, L.L.C., a Delaware limited liability company ("ACPLLC"), general partner of ACM, with respect to the Class A Ordinary Shares directly held by ACP; and
(iii) Phillip Gross ("Mr. Gross"), as (1) managing member of ACA, managing member of ACPGP, and (2) managing member of ACPLLC, general partner of ACM, with respect to the Class A Ordinary Shares directly held by ACP.
The foregoing persons are hereinafter sometimes collectively referred to as the "Reporting Persons." Any disclosures herein with respect to persons other than the Reporting Persons are made on information and belief after making inquiry to the appropriate party.
The filing of this statement should not be construed in and of itself as an admission by any Reporting Person as to beneficial ownership of the securities reported herein.
(b)
Address or principal business office or, if none, residence:
The address of the business office of each of the Reporting Persons is 200 Clarendon Street, 52nd Floor, Boston, Massachusetts 02116.
(c)
Citizenship:
ACM is a limited partnership organized under the laws of the State of Delaware. Messrs. Gross and Atchinson are citizens of the United States.
(d)
Title of class of securities:
Class A Ordinary Shares, par value $0.0001 per share
(e)
CUSIP Number(s):
G7610P104
Item 3.
If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)
Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)
Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)
Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)
Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)
An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)
An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)
A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)
A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)
A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)
A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J),
please specify the type of institution:
(k)
Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.
Ownership
(a)
Amount beneficially owned:
The information required by Item 4(a) is set forth in Row 9 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
The percentage set forth in this Schedule 13G is calculated based upon an aggregate of 21,860,000 Class A Ordinary Shares outstanding as of June 12, 2026, as reported in the Company's Prospectus filed pursuant to Rule 424(b)(4) with the Securities and Exchange Commission on June 11, 2026 and the Company's Current Report on Form 8-K filed with the Securities and Exchange Commission on June 15, 2026, after giving effect to the completion of the offering and the partial exercise of the underwriters' over-allotment option, all as described therein.
(b)
Percent of class:
8.23%
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
The information required by Item 4(c)(i) is set forth in Row 5 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
(ii) Shared power to vote or to direct the vote:
The information required by Item 4(c)(ii) is set forth in Row 6 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
(iii) Sole power to dispose or to direct the disposition of:
The information required by Item 4(c)(iii) is set forth in Row 7 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
(iv) Shared power to dispose or to direct the disposition of:
The information required by Item 4(c)(iv) is set forth in Row 8 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
Item 5.
Ownership of 5 Percent or Less of a Class.
Not Applicable
Item 6.
Ownership of more than 5 Percent on Behalf of Another Person.
If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required.
See Item 2(a).
Item 7.
Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
Not Applicable
Item 8.
Identification and Classification of Members of the Group.
Not Applicable
Item 9.
Notice of Dissolution of Group.
Not Applicable
Item 10.
Certifications:
By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.
Adage Capital Management, L.P.
Signature:
/s/ Robert Atchinson
Name/Title:
By: Adage Capital Partners, L.L.C., its General Partner, By: Robert Atchinson, its Managing Member
