Statement of Changes in Beneficial Ownership (Form 4)

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b). Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * Apex Treasury Sponsor LLC 2. Issuer Name and Ticker or Trading Symbol Apex Treasury Corp [APXT] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O APEX TREASURY CORPORATION, 2035 REGATTA DRIVE 3. Date of Earliest Transaction (Month/Day/Year) 03/13/2026 (Street) VERO BEACH, FL 32963 4. If Amendment, Date Original Filed (Month/Day/Year) 6. Individual or Joint/Group Filing (Check Applicable Line) ___ Form filed by One Reporting Person _X_ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Class B Ordinary Shares

(1)

03/13/2026

J(2)

30,000

(1)

(1)

Class A Ordinary Shares

30,000

$ 0

11,120,000

D(3)

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Apex Treasury Sponsor LLC C/O APEX TREASURY CORPORATION 2035 REGATTA DRIVE VERO BEACH, FL 32963	X	X
Cochrane Hugh C/O APEX TREASURY CORPORATION 2035 REGATTA DRIVE VERO BEACH, FL 32963	X		Co-Chief Executive Officer
Rahman Ajmal C/O APEX TREASURY CORPORATION 2035 REGATTA DRIVE VERO BEACH, FL 32963	X		Co-Chief Executive Officer

Signatures

/s/ Jordan Leon, Attorney-in-Fact for Apex Treasury Sponsor LLC		03/16/2026
**Signature of Reporting Person		Date
/s/ Jordan Leon, Attorney-in-Fact for Hugh Cochrane		03/16/2026
**Signature of Reporting Person		Date
/s/ Jordan Leon, Attorney-in-Fact for Ajmal Rahman		03/16/2026
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	The Class B Ordinary Shares are automatically convertible into the Issuer's Class A Ordinary Shares at the time of the Issuer's initial business combination, or earlier at the option of the holder thereof, on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights, and have no expiration date, as described under the heading "Description of Securities" in the Issuer's registration statement on Form S-1 (File No. 333-289485).
(2)	On March 13, 2026, Apex Treasury Sponsor LLC (the "Sponsor") transferred 30,000 Class B Ordinary Shares of the Issuer to Stephen CuUnjieng for the same per-share price it paid for such shares, or $0.003 per share.
(3)	The Sponsor is the record holder of the securities reported herein. Hugh Cochrane and Ajmal Rahman are the managing members of the Sponsor. Each of Messrs. Cochrane and Rahman has voting and investment discretion with respect to the securities held of record by the Sponsor. As such, each of Messrs. Cochrane and Rahman may be deemed to have beneficial ownership of the securities held directly by the Sponsor. Each such person disclaims any beneficial ownership of the reported shares other than to the extent of any pecuniary interest they may have therein, directly or indirectly..
Remarks: See Exhibit 99.1 - Joint Filer Information, which is incorporated herein by reference and describes in further detail the relationships of the Reporting Persons to the Issuer.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure. Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.