JATT III sponsor buys 234K shares at $10

JATT III Acquisition Corp (JTTT) disclosed that its sponsor, JATT Ventures III L.P., purchased 234,000 Ordinary Shares at $10.00 per share on August 27, 2026, as private placement shares under a Private Placement Shares Purchase Agreement.

Rhea-AI Filing Summary

JATT III Acquisition Corp (JTTT) disclosed that its sponsor, JATT Ventures III L.P., purchased 234,000 Ordinary Shares at $10.00 per share on August 27, 2026, as private placement shares under a Private Placement Shares Purchase Agreement. Following this transaction, the sponsor holds 1,959,000 Ordinary Shares, over which Dr. Someit Sidhu has voting and investment discretion while disclaiming beneficial ownership except for any pecuniary interest.

Insider Trade Summary

Net Buyer: 234,000 shares

Net Buy 1 txn

Insider JATT Ventures III L.P., Sidhu Someit

Role 10% Owner | CEO and Chairman

Bought 234,000 shs ($2.34M)

Type	Security	Shares	Price	Value
Purchase	Ordinary Shares F1, F2	234,000	$10.00	$2.34M

Holdings After Transaction: Ordinary Shares — 1,959,000 shares (Direct)

Footnotes (2)

1. F1. Reflects the 234,000 private placement shares purchased by JATT Ventures III L.P., the Issuer's sponsor (the "Sponsor") of its initial public offering, pursuant to the Private Placement Shares Purchase Agreement dated August 25, 2026 by and between the Issuer and the Sponsor.
2. F2. The Sponsor is the record holder of the securities reported herein. JATT Ventures III Ltd is the sole general partner of the Sponsor, and Dr. Someit Sidhu is a limited partner of the Sponsor. Dr. Someit Sidhu is also the sole member of JATT Ventures III Ltd. Dr. Someit Sidhu has voting and investment discretion with respect to the ordinary shares held of record by the Sponsor. Dr. Someit Sidhu disclaims any beneficial ownership of the securities held by the Sponsor other than to the extent of any pecuniary interest he may have therein, directly or indirectly.

Key Figures

Shares purchased: 234,000 shares Purchase price per share: $10.00 per share Shares held after transaction: 1,959,000 shares

3 metrics

Shares purchased 234,000 shares Ordinary Shares acquired by JATT Ventures III L.P. on August 27, 2026

Purchase price per share $10.00 per share Private placement share purchase on August 27, 2026

Shares held after transaction 1,959,000 shares Ordinary Shares held by JATT Ventures III L.P. following the purchase

Key Terms

private placement shares, Private Placement Shares Purchase Agreement, initial public offering, pecuniary interest, +1 more

5 terms

private placement shares financial

"Reflects the 234,000 private placement shares purchased by JATT Ventures III L.P."

Private Placement Shares Purchase Agreement financial

"pursuant to the Private Placement Shares Purchase Agreement dated August 25, 2026"

initial public offering financial

"the Issuer's sponsor (the "Sponsor") of its initial public offering"

An initial public offering (IPO) is when a private company first sells its shares to the public and becomes a stock-listed company. It matters because it allows the company to raise money from a wide range of investors, helping it grow, while giving early shareholders a way to sell some of their ownership.

pecuniary interest financial

"disclaims any beneficial ownership of the securities held by the Sponsor other than to the extent of any pecuniary interest"

beneficial ownership financial

"disclaims any beneficial ownership of the securities held by the Sponsor"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

FAQ

What insider transaction did JATT III Acquisition Corp (JTTT) report?

The company reported that its sponsor, JATT Ventures III L.P., purchased 234,000 Ordinary Shares of JATT III Acquisition Corp on August 27, 2026 as private placement shares at $10.00 per share, increasing the sponsor’s holdings to 1,959,000 shares.

Who executed the share purchase reported for JTTT and in what capacity?

The shares were purchased by JATT Ventures III L.P., the sponsor of JATT III Acquisition Corp’s initial public offering. JATT Ventures III Ltd is the sole general partner of the sponsor, and Dr. Someit Sidhu is a limited partner and has voting and investment discretion over the sponsor’s shares.

At what price were the JTTT shares acquired in this Form 4 filing?

The sponsor acquired 234,000 Ordinary Shares of JATT III Acquisition Corp at a price of $10.00 per share, as private placement shares under a Private Placement Shares Purchase Agreement dated August 25, 2026.

How many JTTT shares does the sponsor hold after the reported transaction?

After the purchase, JATT Ventures III L.P. holds 1,959,000 Ordinary Shares of JATT III Acquisition Corp. This share count is reported as the total owned by the sponsor following the August 27, 2026 private placement transaction.

What is Dr. Someit Sidhu’s beneficial ownership status over the JTTT shares?

Dr. Someit Sidhu has voting and investment discretion over the Ordinary Shares held by the sponsor but disclaims beneficial ownership of those securities except to the extent of any pecuniary interest he may have in them, directly or indirectly.

Were the JTTT purchases made under a Rule 10b5-1 trading plan?

No. The filing indicates that no Rule 10b5-1 trading plan was affirmed for this transaction, meaning the purchase is not reported as being made pursuant to such a pre-arranged trading plan.

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Available on EDGAR 09/02/2026 - 09:11 AM Accepted by SEC EDGAR 08/27/2026 - 06:02 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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 for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

JATT Ventures III L.P.

(Last) (First) (Middle)

153 CENTRAL AVENUE C/O 56

(Street)

WESTFIELD NEW JERSEY 07091

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
JATT III Acquisition Corp [ JTTT ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/27/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

	Form filed by One Reporting Person
X	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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	08/27/2026		P(1)		234,000	A	$10	1,959,000(2)	D

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 Securities Underlying Derivative Security (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: 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

1. Name and Address of Reporting Person^*

JATT Ventures III L.P.

(Last) (First) (Middle)

153 CENTRAL AVENUE C/O 56

(Street)

WESTFIELD NEW JERSEY 07091

(City) (State) (Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

Sidhu Someit

(Last) (First) (Middle)

C/O JATT III ACQUISITION CORP

153 CENTRAL AVENUE C/O 56

(Street)

WESTFIELD 07091

(City) (State) (Zip)

CAYMAN ISLANDS

(Country)

Relationship of Reporting Person(s) to Issuer

X	Director	X	10% Owner
X	Officer (give title below)		Other (specify below)
	CEO and Chairman

Explanation of Responses:

1. Reflects the 234,000 private placement shares purchased by JATT Ventures III L.P., the Issuer's sponsor (the "Sponsor") of its initial public offering, pursuant to the Private Placement Shares Purchase Agreement dated August 25, 2026 by and between the Issuer and the Sponsor.

2. The Sponsor is the record holder of the securities reported herein. JATT Ventures III Ltd is the sole general partner of the Sponsor, and Dr. Someit Sidhu is a limited partner of the Sponsor. Dr. Someit Sidhu is also the sole member of JATT Ventures III Ltd. Dr. Someit Sidhu has voting and investment discretion with respect to the ordinary shares held of record by the Sponsor. Dr. Someit Sidhu disclaims any beneficial ownership of the securities held by the Sponsor other than to the extent of any pecuniary interest he may have therein, directly or indirectly.

	/s/ Someit Sidhu	08/27/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)