[Form 4] IB Acquisition Corp. Insider Trading Activity

Rhea-AI Filing Summary

IB Acquisition Corp. (IBAC): Form 4 shows insider sales by affiliated funds. On 10/09/2025, AQR‑affiliated vehicles reported multiple open‑market sales of IBAC common stock at $10.44 per share. Examples include 80,123 shares by AQR Global Alternative Investment Offshore Fund, L.P. and 32,597 shares by AQR Diversified Arbitrage Fund. The holdings are reported as indirect through funds managed by AQR Capital Management, LLC and AQR Arbitrage, LLC, with updated post‑trade beneficial ownership listed for each fund.

Insights

Equity Ownership Analyst

Large affiliated holder reported sales at $10.44 across funds; signals reduced beneficial stake, watch for continued divestment.

AQR-affiliated entities disclosed open-market sales on 10/09/2025 of IB Acquisition Corp. common stock across eleven funds, each coded "S". The transactions occurred at $10.44 per share and were reported as indirect ownership changes. Post-transaction balances remain in each vehicle, indicating ongoing but reduced exposure.

The filing aggregates multiple related managers and general partners, clarifying control and advisory roles over the selling funds. It is identified as filed by more than one reporting person and indicates status as a 10% owner, making ownership changes more notable under Section 16. This is a straightforward reduction in beneficial ownership; no derivatives were reported in Table II.

Key points to watch: subsequent Section 16 filings for additional sales, any shift below key ownership thresholds, and consistency of pricing around $10.44. The dated signatures on 10/14/2025 confirm timely reporting. If similar-sized transactions recur in the near term, they would further reduce the affiliated group’s stake and could alter reporting obligations.

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
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

AQR Capital Management Holdings, LLC

(Last) (First) (Middle)

ONE GREENWICH PLAZA

SUITE 130

(Street)

GREENWICH CT 06830

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
IB Acquisition Corp. [ IBAC ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
10/09/2025

4. If Amendment, Date of 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

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
Common Stock	10/09/2025		S		80,123	D	$10.44	281,790	I	AQR Global Alternative Investment Offshore Fund, L.P.(1)(2)
Common Stock	10/09/2025		S		32,597	D	$10.44	114,641	I	AQR Diversified Arbitrage Fund(1)
Common Stock	10/09/2025		S		23,306	D	$10.44	81,969	I	AQR Absolute Return Master Account, L.P.(1)(2)
Common Stock	10/09/2025		S		17,352	D	$10.44	61,028	I	AQR Apex MS Master Account, L.P.(1)(2)
Common Stock	10/09/2025		S		15,332	D	$10.44	53,925	I	AQR TA Global Alpha Fund, L.P.(1)(2)
Common Stock	10/09/2025		S		14,565	D	$10.44	51,225	I	AQR Corporate Arbitrage Master Account, L.P.(1)(2)
Common Stock	10/09/2025		S		6,025	D	$10.44	21,188	I	AQR TA Legacy Fund, LLC(1)(2)
Common Stock	10/09/2025		S		3,635	D	$10.44	12,786	I	AQR UCITS Funds - AQR Apex UCITS Fund(1)
Common Stock	10/09/2025		S		1,313	D	$10.44	4,619	I	AQR DELTA Master Account, L.P.(1)(2)
Common Stock	10/09/2025		S		943	D	$10.44	3,313	I	AQR UCITS Funds - AQR Corporate Arbitrage UCITS Fund(1)
Common Stock	10/09/2025		S		615	D	$10.44	2,162	I	AQR Arbitrage MA Offshore Fund, L.P.(1)(2)

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^*

AQR Capital Management Holdings, LLC

(Last) (First) (Middle)

ONE GREENWICH PLAZA

SUITE 130

(Street)

GREENWICH CT 06830

(City) (State) (Zip)

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^*

AQR CAPITAL MANAGEMENT LLC

(Last) (First) (Middle)

ONE GREENWICH PLAZA

SUITE 130

(Street)

GREENWICH CT 06830

(City) (State) (Zip)

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^*

AQR Arbitrage LLC

(Last) (First) (Middle)

ONE GREENWICH PLAZA

SUITE 130

(Street)

GREENWICH CT 06830

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

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

Explanation of Responses:

1. AQR Capital Management, LLC is a wholly owned subsidiary of AQR Capital Management Holdings, LLC. AQR Arbitrage, LLC is deemed to be controlled by AQR Capital Management, LLC. AQR Capital Management, LLC and AQR Arbitrage, LLC act as investment manager to each of AQR Global Alternative Investment Offshore Fund, L.P., AQR Corporate Arbitrage Master Account, L.P., AQR TA Global Alpha Fund, L.P., AQR Absolute Return Master Account, L.P., AQR Apex MS Master Account, L.P., AQR TA Legacy Fund, LLC, AQR DELTA Master Account, L.P., AQR Arbitrage MA Offshore Fund, L.P. AQR Capital Management, LLC serves as the investment manager, and AQR Arbitrage, LLC as sub-advisor, to the AQR Diversified Arbitrage Fund, an open-end registered investment company, to AQR UCITS Funds - AQR Apex UCITS Fund, and to AQR UCITS Funds - AQR Corporate Arbitrage UCITS Fund.

2. AQR Capital Management GP Ltd. is the general partner of AQR Global Alternative Investment Offshore Fund, L.P. AQR Corporate Arbitrage GP, LLC is the general partner of AQR Corporate Arbitrage Master Account, L.P. AQR Tax Advantaged GP II, LLC is the general partner of AQR TA Global Alpha Fund, L.P. AQR Principal Global Asset Allocation, LLC is the general partner of AQR Absolute Return Master Account, L.P. AQR Apex MS GP, LLC is the general partner of AQR Apex MS Master Account, L.P. AQR Capital Management II, LLC is the general partner of AQR TA Legacy Fund, LLC. CNH Principal Partners I, LLC is the general partner of AQR Arbitrage MA Offshore Fund, L.P. AQR Capital Management III, LLC is the general partner of AQR DELTA Master Account, L.P.

	/s/ AQR CAPITAL MANAGEMENT HOLDINGS, LLC, /s/ Henry Parkin, Authorized Signatory	10/14/2025
	/s/ AQR CAPITAL MANAGEMENT, LLC, /s/ Henry Parkin, Authorized Signatory	10/14/2025
	/s/ AQR ARBITRAGE, LLC, /s/ Henry Parkin, Authorized Signatory	10/14/2025
	** Signature of Reporting Person	Date
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