SCHEDULE: Magnetar Funds Disclose 5.1% Stake in M3-Brigade V

Magnetar Financial LLC and its affiliates reported a 5.10% beneficial ownership stake in M3-Brigade Acquisition V Corp.'s Class A ordinary shares as of September 30, 2025.

Summary

• Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC, and David J. Snyderman (collectively, the "Reporting Persons") have filed a Schedule 13G Amendment No. 2.
• The Reporting Persons beneficially own 1,469,016 Class A ordinary shares of M3-Brigade Acquisition V Corp.
• This ownership represents approximately 5.10% of the total outstanding Class A ordinary shares.
• The shares are held across several Magnetar Funds, including Constellation Master Fund (341,302 shares), Lake Credit Fund (252,262 shares), Structured Credit Fund (237,424 shares), Xing He Master Fund (222,571 shares), Alpha Star Fund (148,383 shares), Purpose Credit Fund (133,539 shares), Magnetar SC Fund (103,865 shares), and Purpose Credit Fund T (29,670 shares).
• Magnetar Financial serves as the investment adviser to these funds, exercising shared voting and investment power over the shares.
• The shares were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing the control of the issuer.

Sentiment

Score: 5

Explanation: This is a routine disclosure of beneficial ownership, presenting factual information without explicit positive or negative sentiment regarding the issuer's performance or future prospects.

Positives

• A significant institutional investor, Magnetar Financial LLC and its affiliates, maintains a 5.10% stake, indicating continued interest in M3-Brigade Acquisition V Corp.

Risks

• The filing certifies that the securities were not acquired or held for the purpose of or with the effect of changing or influencing the control of the issuer, mitigating potential risks associated with activist investor intervention.

Future Outlook

This filing is a disclosure of current beneficial ownership and does not contain forward-looking statements or guidance regarding the issuer's future performance or strategic direction.

Management Comments

• "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."

Industry Context

This filing is a routine disclosure of an institutional investor's stake in a specific company and does not provide broader industry trends or competitive analysis.

Stakeholder Impact

• Shareholders gain transparency regarding the ownership structure of M3-Brigade Acquisition V Corp. and the significant stake held by Magnetar Financial LLC and its affiliates.

Key Dates

Keywords

M3-Brigade Acquisition V Corp, Magnetar Financial LLC, Schedule 13G, Beneficial Ownership, Class A ordinary shares, Institutional Investor, SEC Filing, G63212107