Highbridge holds 4.6% of Apex Treasury shares

Highbridge Capital Management, LLC, as investment adviser to certain funds, reports beneficial ownership of 1,575,680 Class A Ordinary Shares of Apex Treasury Corporation, representing 4.6% of that class.

Rhea-AI Filing Summary

Highbridge Capital Management, LLC, as investment adviser to certain funds, reports beneficial ownership of 1,575,680 Class A Ordinary Shares of Apex Treasury Corporation, representing 4.6% of that class. This percentage is based on 34,470,000 Class A Ordinary Shares outstanding as of July 21, 2026.

Highbridge has sole voting and sole dispositive power over the 1,575,680 shares and no shared power. The shares are held by funds it advises, which have the right to receive dividends and sale proceeds. As of June 30, 2026, Highbridge may have been deemed to beneficially own 1,802,773 shares, or 5.2% of the class.

Key Figures

Shares beneficially owned: 1,575,680 shares Percent of class: 4.6% Sole voting power: 1,575,680 shares +4 more

7 metrics

Shares beneficially owned 1,575,680 shares Class A Ordinary Shares of Apex Treasury Corporation currently reported by Highbridge Capital Management, LLC

Percent of class 4.6% Ownership percentage of Apex Treasury Class A shares attributed to Highbridge based on 34,470,000 shares outstanding

Sole voting power 1,575,680 shares Number of Apex Treasury Class A shares over which Highbridge has sole voting power

Sole dispositive power 1,575,680 shares Number of Apex Treasury Class A shares over which Highbridge has sole dispositive power

Shares outstanding baseline 34,470,000 shares Apex Treasury Class A Ordinary Shares outstanding as of July 21, 2026, used to compute the 4.6% stake

Prior deemed ownership 1,802,773 shares Class A Ordinary Shares Highbridge may have been deemed to beneficially own as of June 30, 2026

Prior percent of class 5.2% Ownership percentage corresponding to 1,802,773 shares as of June 30, 2026

Key Terms

beneficially own, sole voting power, sole dispositive power, percent of class, +2 more

6 terms

beneficially own financial

"may have been deemed to beneficially own 1,802,773 Class A Ordinary Shares"

Beneficially own means having the economic rights and risks of a security—such as the right to receive dividends, sell the shares, or profit from price changes—whether or not your name appears on the official share register. Think of it like renting a car: you use it and reap the benefits even if the title lists someone else. Investors care because beneficial ownership determines who truly controls value, must be disclosed under securities rules, and can signal potential influence or trading activity that affects a stock’s price.

sole voting power financial

"Sole Voting Power 1,575,680.00"

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 financial

"Sole Dispositive Power 1,575,680.00"

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: 4.6%"

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 (the "Highbridge Funds")"

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.

Schedule 13G regulatory

"for the purposes of Section 13 of the Securities Exchange Act of 1934"

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

FAQ

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

What percentage of Apex Treasury (APXT) does Highbridge Capital Management currently own?

Highbridge Capital Management reports beneficial ownership of 4.6% of Apex Treasury’s Class A Ordinary Shares, equal to 1,575,680 shares. This stake is calculated using 34,470,000 shares outstanding as of July 21, 2026, as disclosed in the company’s SEC reports.

How many Apex Treasury (APXT) shares does Highbridge Capital Management control voting for?

Highbridge Capital Management has sole voting power over 1,575,680 Class A Ordinary Shares of Apex Treasury and no shared voting power. It also has sole dispositive power over the same number of shares, indicating exclusive authority to decide how those shares are voted and disposed.

How did Highbridge’s ownership in Apex Treasury (APXT) change around June 30, 2026?

As of June 30, 2026, Highbridge may have been deemed to beneficially own 1,802,773 Class A Ordinary Shares, representing 5.2% of the class. The current report lists 1,575,680 shares, or 4.6%, indicating a lower reported stake at the later reference date.

On whose behalf does Highbridge Capital Management hold Apex Treasury (APXT) shares?

Highbridge Capital Management acts as investment adviser to certain funds and accounts known as the Highbridge Funds. These funds directly hold the Apex Treasury Class A Ordinary Shares and have the right to receive dividends and sale proceeds from the reported shares.

What is the total number of Apex Treasury (APXT) Class A shares used to calculate Highbridge’s ownership?

Highbridge’s 4.6% ownership of Apex Treasury Class A Ordinary Shares is calculated using 34,470,000 shares outstanding as of July 21, 2026. This outstanding share count comes from Apex Treasury’s SEC reports referenced in the ownership disclosure.

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

Apex Treasury Corporation

(Name of Issuer)

Class A Ordinary Shares, par value $0.0001 per share

(Title of Class of Securities)

G04104108

(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): G04104108

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 1,575,680.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 1,575,680.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,575,680.00

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)

4.6 %

12

Type of Reporting Person (See Instructions)

IA, OO

Comment for Type of Reporting Person: The information set forth on this cover page reflects information as of the date hereof. As of June 30, 2026, the Reporting Person may have been deemed to beneficially own 1,802,773 Class A Ordinary Shares (as defined in Item 2(a)), representing 5.2% of the Class A Ordinary Shares outstanding as of such date.

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Apex Treasury Corporation
(b)	Address of issuer's principal executive offices: 2035 Regatta Drive, Vero Beach, FL 32963
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 Apex Treasury Corporation, 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): G04104108
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 as of the date hereof, is calculated based upon an aggregate of 34,470,000 Class A Ordinary Shares outstanding as of July 21, 2026, as reported in Exhibit 2.1 attached to the Issuer's Current Report on Form 8-K filed with the Securities and Exchange Commission (the "SEC") on July 22, 2026. The percentage set forth in this Schedule 13G as of June 30, 2026, is calculated based upon an aggregate of 34,470,000 Class A Ordinary Shares outstanding as of May 12, 2026, as reported in the Issuer's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2026, filed with the SEC on May 12, 2026.
(b)	Percent of class: 4.6%
(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.
	Ownership of 5 percent or less of a class
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.
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