Highbridge Capital Management (AACP) discloses 9.2% ownership of Apogee Acquisition

Rhea-AI Filing Summary

Highbridge Capital Management, LLC, as investment adviser to certain funds and accounts, reports beneficial ownership of Class A Ordinary Shares of Apogee Acquisition Corp. Highbridge and its advised funds hold 1,638,750 Class A Ordinary Shares, representing 9.2% of the class. The shares are directly held by the Highbridge funds, while Highbridge reports sole voting and dispositive power over these shares. The ownership percentage is based on 17,720,000 Class A Ordinary Shares outstanding as of May 15, 2026, as disclosed by the issuer. Highbridge states that the filing should not be construed as an admission that it or related persons are the beneficial owner of all securities reported.

Key Figures

Shares beneficially owned: 1,638,750 Class A Ordinary Shares Ownership percentage: 9.2% Shares outstanding: 17,720,000 Class A Ordinary Shares +2 more

5 metrics

Shares beneficially owned 1,638,750 Class A Ordinary Shares Beneficially owned by Highbridge-managed funds as reported

Ownership percentage 9.2% Percentage of Apogee Acquisition Corp Class A Ordinary Shares

Shares outstanding 17,720,000 Class A Ordinary Shares Outstanding as of May 15, 2026, per issuer’s Form 10-Q

Sole voting power 1,638,750 shares Shares over which Highbridge has sole voting power

Sole dispositive power 1,638,750 shares Shares over which Highbridge has sole dispositive power

Key Terms

beneficial owner, sole voting power, sole dispositive power, percent of class, +1 more

5 terms

beneficial owner regulatory

"the beneficial owner of the securities reported herein"

A beneficial owner is the person who ultimately owns or controls a financial asset or property, even if their name isn't directly on official documents. Think of it like someone who secretly holds the keys to a safe deposit box—others may appear to have access, but the true owner is the one who benefits from what's inside. Identifying beneficial owners helps ensure transparency and prevent illegal activities like money laundering or fraud.

sole voting power regulatory

"Sole Voting Power 1,638,750.00"

Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.

sole dispositive power regulatory

"Sole Dispositive Power 1,638,750.00"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

percent of class financial

"Percent of class: 9.2%"

Percent of class is the portion of a specific category of securities—such as a company’s common shares, preferred shares, or a bond series—that takes part in or approves a corporate action (vote, consent, tender, etc.). Investors watch this number because it reveals how much support or opposition exists within that particular shareholder group; like counting how many members of a club back a proposal, it can determine whether a plan passes or how influence is distributed.

investment adviser financial

"the investment adviser to certain funds and accounts"

An investment adviser is a person or firm that professionally manages money and gives recommendations about buying, selling, or holding investments. Like a financial coach or guide, they have a legal duty to act in a client's best financial interest, so their advice, fees and potential conflicts can directly affect returns and risk — making their role important for investors who want informed, accountable help with portfolios.

FAQ

How many AACP shares does Highbridge Capital Management report owning?

Highbridge Capital Management reports beneficial ownership of 1,638,750 Class A Ordinary Shares of Apogee Acquisition Corp, held through certain Highbridge-managed funds and accounts, with Highbridge having sole voting and dispositive power over these shares.

What percentage of Apogee Acquisition Corp (AACP) does Highbridge Capital Management hold?

Highbridge Capital Management reports holding 9.2% of Apogee Acquisition Corp’s Class A Ordinary Shares, based on 17,720,000 shares outstanding as of May 15, 2026, as disclosed in the issuer’s Form 10-Q for the quarter ended March 31, 2026.

Who directly holds the AACP shares reported by Highbridge Capital Management?

The reported AACP shares are directly held by certain funds and accounts advised by Highbridge, referred to as the Highbridge Funds. Highbridge reports the stake as investment adviser and disclaims that the filing is an admission of beneficial ownership by Highbridge or related persons.

Does any single Highbridge fund hold more than 5% of AACP shares?

Yes. Highbridge Tactical Credit Master Fund, L.P., one of the Highbridge Funds, has the right to receive or direct the receipt of dividends or sale proceeds from more than 5% of Apogee Acquisition Corp’s outstanding Class A Ordinary Shares.

What voting and dispositive powers over AACP shares does Highbridge report?

Highbridge reports sole voting power and sole dispositive power over 1,638,750 AACP Class A Ordinary Shares, and no shared voting or dispositive power. These powers relate to shares held by the Highbridge Funds it advises.

Where is Highbridge Capital Management, the AACP reporting holder, organized and located?

Highbridge Capital Management is a Delaware limited liability company with its business office at 390 Madison Avenue, 28th Floor, New York, NY 10017, acting as investment adviser to the funds that hold AACP Class A Ordinary Shares.

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

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Available on EDGAR 08/14/2026 - 12:37 PM Accepted by SEC EDGAR 08/14/2026 - 12:36 PM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

Apogee Acquisition Corp

(Name of Issuer)

Class A Ordinary Shares, par value $0.0001 per share

(Title of Class of Securities)

G04126101

(CUSIP Number)

06/30/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): G04126101

1

Names of Reporting Persons

Highbridge Capital Management, LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 1,638,750.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 1,638,750.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,638,750.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

9.2 %

12

Type of Reporting Person (See Instructions)

IA, OO

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Apogee Acquisition Corp
(b)	Address of issuer's principal executive offices: 2106 House Avenue, Suite 375, Cheyenne, WY, 82001
Item 2.
(a)	Name of person filing: This statement is filed by Highbridge Capital Management, LLC ("Highbridge" or the "Reporting Person"), a Delaware limited liability company and the investment adviser to certain funds and accounts (the "Highbridge Funds"), with respect to the Class A ordinary shares, par value $0.0001 per share ("Class A Ordinary Shares"), of Apogee Acquisition Corp, a Cayman Islands exempted company (the "Issuer"), directly held by the Highbridge Funds; The filing of this statement should not be construed as an admission that any of the foregoing persons or the Reporting Person is, for the purposes of Section 13 of the Securities Exchange Act of 1934, the beneficial owner of the securities reported herein.
(b)	Address or principal business office or, if none, residence: The address of the business office of the Reporting Person is 390 Madison Avenue, 28th Floor, New York, NY 10017.
(c)	Citizenship: Highbridge is a Delaware limited liability company.
(d)	Title of class of securities: Class A Ordinary Shares, par value $0.0001 per share
(e)	CUSIP Number(s): G04126101
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 the Reporting Person and is incorporated herein by reference. The percentage set forth in this Schedule 13G is calculated based upon an aggregate of 17,720,000 Class A Ordinary Shares outstanding as of May 15, 2026, as reported in the Issuer's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2026, with the Securities and Exchange Commission on May 15, 2026.
(b)	Percent of class: 9.2%
(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 the Reporting Person 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 the Reporting Person 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 the Reporting Person 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 the Reporting Person 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). The Highbridge Funds have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the Class A Ordinary Shares reported herein. Highbridge Tactical Credit Master Fund, L.P., a Highbridge Fund, has the right to receive or the power to direct the receipt of dividends or the proceeds from the sale of more than 5% of the outstanding Class A Ordinary Shares.
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.

Highbridge Capital Management, LLC

Signature:	/s/ Kirk Rule
Name/Title:	By: Kirk Rule, Executive Director
Date:	08/14/2026