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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(Print or Type Responses)

1. Name and Address of Reporting Person * JATT Ventures II L.P. 2. Issuer Name and Ticker or Trading Symbol JATT II Acquisition Corp. [JATT] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 153 CENTRAL AVENUE C/O 56 3. Date of Earliest Transaction (Month/Day/Year) 04/20/2026 (Street) WESTFIELD, NJ 07091 4. If Amendment, Date Original Filed (Month/Day/Year) 6. Individual or Joint/Group Filing (Check Applicable Line) _X_ Form filed by One Reporting Person ___ 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 Ordinary Shares 04/20/2026 P(1) 300,000 A (1) 2,025,000(2) D

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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

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
JATT Ventures II L.P. 153 CENTRAL AVENUE C/O 56 WESTFIELD, NJ 07091		X

Signatures

JATT Ventures II L.P., By: JATT Ventures II Ltd, its General Partner /s/ Someit Sidhu Name: Someit Sidhu Title: Director		04/21/2026
**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)	Reflects the 300,000 private placement shares purchased by JATT Ventures II L.P., the Issuer's sponsor, pursuant to the Private Placement Shares Purchase Agreement dated April 16, 2026 entered into with the Issuer.
(2)	Including up to 225,000 Ordinary Shares subject to forfeiture depending on the extent to which the Issuer's underwriter' over-allotment option was exercised during the Issuer's initial public offering. JATT Ventures II L.P. is the record holder of the securities reported herein. JATT Ventures II Ltd is the sole general partner of JATT Ventures II L.P., and Dr. Someit Sidhu is a limited partner of JATT Ventures II L.P.. Dr. Someit Sidhu is also the sole member of JATT Ventures II Ltd. Dr. Someit Sidhu has voting and investment discretion with respect to the ordinary shares held of record by JATT Ventures II L.P. Dr. Someit Sidhu disclaims any beneficial ownership of the securities held by JATT Ventures II L.P. other than to the extent of any pecuniary interest he may have therein, directly or indirectly.

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