AQR group (GPAT) discloses 1.4M-share, 8.66% holding in GP-Act III

Rhea-AI Filing Summary

AQR Capital Management entities report a significant ownership position in GP-Act III Acquisition Corp. The group, including AQR Capital Management, LLC and related affiliates, reports beneficial ownership of 1,400,000 Class A ordinary shares, representing 8.66% of the class, with only shared, and no sole, voting or dispositive power.

Within this total, AQR Global Alternative Investment Offshore Fund, L.P. holds 838,420 shares, or 5.19% of the class, with voting and dispositive power exercised on a shared basis through AQR-managed entities. The filing is made jointly by multiple AQR entities reflecting their control and investment manager relationships.

Key Figures

Beneficial ownership: 1,400,000 shares Percent of class: 8.66% Offshore fund holding: 838,420 shares +3 more

6 metrics

Beneficial ownership 1,400,000 shares Class A ordinary shares beneficially owned by AQR-affiliated entities

Percent of class 8.66% Portion of GP-Act III Class A ordinary shares held by AQR group

Offshore fund holding 838,420 shares Shares beneficially owned by AQR Global Alternative Investment Offshore Fund, L.P.

Offshore fund percent of class 5.19% Class A ordinary shares of GP-Act III held by the offshore fund

Sole voting power 0 shares Shares over which reporting AQR entities have sole voting power

Shared voting power 1,400,000 shares Shares over which reporting AQR entities have shared voting power

Key Terms

beneficially owned, shared voting power, dispositive power, parent holding company

4 terms

beneficially owned financial

"Item 4. | Ownership (a) | Amount beneficially owned: 1,400,000"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

shared voting power financial

"6 | Shared Voting Power 1,400,000.00 7 | Sole Dispositive Power 0.00"

Shared voting power occurs when two or more parties jointly have the right to vote or decide how a block of company shares is cast, like co-owners who must agree before moving a piece of furniture. Investors care because who controls voting rights affects board elections, major corporate decisions and takeover outcomes, and shared control can alter regulatory disclosures and the practical influence any holder has over a company’s direction and value.

dispositive power financial

"8 | Shared Dispositive Power 1,400,000.00 9 1,400,000.00"

Dispositive power is the authority to decide the final outcome of an asset, legal claim, contract, or corporate action — in effect the power to dispose of or resolve something. For investors it matters because whoever holds that authority can determine who gets paid, who controls an asset or vote, and how risks and returns are allocated; think of it like holding the key that lets you lock in the winner or loser in a deal.

parent holding company financial

"If a parent holding company has filed this schedule, pursuant to (ii)(G)"

FAQ

What ownership stake in GPAT does AQR report in this Schedule 13G/A?

AQR-affiliated entities report beneficial ownership of 1,400,000 Class A ordinary shares of GP-Act III Acquisition Corp., representing 8.66% of the outstanding class, held with shared voting and dispositive power among the reporting entities.

Which AQR entities are included in the GPAT Schedule 13G/A filing?

The filing covers AQR Capital Management, LLC, AQR Capital Management Holdings, LLC, AQR Arbitrage, LLC, AQR Global Alternative Investment Offshore Fund, L.P., and AQR Capital Management GP Ltd., which agree to file this Schedule jointly due to their control relationships.

How many GPAT shares does AQR’s offshore fund hold?

AQR Global Alternative Investment Offshore Fund, L.P. beneficially owns 838,420 Class A ordinary shares of GP-Act III Acquisition Corp., representing 5.19% of the class, with voting and dispositive power shared through AQR-managed entities and its general partner.

Does AQR have sole or shared voting power over its GPAT shares?

The reporting AQR entities have 0 shares with sole voting power and 1,400,000 shares with shared voting power in GP-Act III Acquisition Corp., matching their shared dispositive power profile over the same number of shares.

What is the nature of AQR’s dispositive power over GPAT shares?

AQR-affiliated entities report no sole dispositive power and shared dispositive power over 1,400,000 shares of GP-Act III Acquisition Corp., including 838,420 shares held by AQR Global Alternative Investment Offshore Fund, L.P.

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Available on EDGAR 08/14/2026 - 09:45 AM Accepted by SEC EDGAR 08/14/2026 - 09:45 AM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

GP-Act III Acquisition Corp.

(Name of Issuer)

Class A ordinary shares, par value $0.0001 per share

(Title of Class of Securities)

G4035N103

(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): G4035N103

1

Names of Reporting Persons

AQR 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

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 1,400,000.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,400,000.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,400,000.00

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)

8.66 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

CUSIP Number(s): G4035N103

1

Names of Reporting Persons

AQR Capital Management Holdings, 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

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 1,400,000.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,400,000.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,400,000.00

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)

8.66 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

CUSIP Number(s): G4035N103

1

Names of Reporting Persons

AQR Arbitrage, 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

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 1,400,000.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,400,000.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,400,000.00

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)

8.66 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

CUSIP Number(s): G4035N103

1

Names of Reporting Persons

AQR Global Alternative Investment Offshore Fund, L.P.

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

CAYMAN ISLANDS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 838,420.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 838,420.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

838,420.00

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)

5.19 %

12

Type of Reporting Person (See Instructions)

PN

SCHEDULE 13G

CUSIP Number(s): G4035N103

1

Names of Reporting Persons

AQR Capital Management GP Ltd.

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

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 838,420.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 838,420.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

838,420.00

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)

5.19 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

Item 1.
(a)	Name of issuer: GP-Act III Acquisition Corp.
(b)	Address of issuer's principal executive offices: 300 PARK AVENUE, 2ND FLOOR, NEW YORK, NEW YORK 10022
Item 2.
(a)	Name of person filing: AQR Capital Management, LLC AQR Capital Management Holdings, LLC AQR Arbitrage, LLC AQR Global Alternative Investment Offshore Fund, L.P. AQR Capital Management GP Ltd.
(b)	Address or principal business office or, if none, residence: ONE GREENWICH PLAZA SUITE 130 Greenwich, Connecticut 06830
(c)	Citizenship: AQR Capital Management, LLC - UNITED STATES AQR Capital Management Holdings, LLC - UNITED STATES AQR Arbitrage, LLC - UNITED STATES AQR Global Alternative Investment Offshore Fund, L.P. - CAYMAN ISLANDS AQR Capital Management GP Ltd. - UNITED STATES
(d)	Title of class of securities: Class A ordinary shares, par value $0.0001 per share
(e)	CUSIP No.: G4035N103
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: 1,400,000
(b)	Percent of class: 8.66 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: AQR Capital Management, LLC - 0 AQR Capital Management Holdings, LLC - 0 AQR Arbitrage, LLC - 0 AQR Global Alternative Investment Offshore Fund, L.P. - 0 AQR Capital Management GP Ltd. - 0
	(ii) Shared power to vote or to direct the vote: AQR Capital Management, LLC - 1,400,000 AQR Capital Management Holdings, LLC - 1,400,000 AQR Arbitrage, LLC - 1,400,000 AQR Global Alternative Investment Offshore Fund, L.P. - 838,420 AQR Capital Management GP Ltd. - 838,420
	(iii) Sole power to dispose or to direct the disposition of: AQR Capital Management, LLC - 0 AQR Capital Management Holdings, LLC - 0 AQR Arbitrage, LLC - 0 AQR Global Alternative Investment Offshore Fund, L.P. - 0 AQR Capital Management GP Ltd. - 0
	(iv) Shared power to dispose or to direct the disposition of: AQR Capital Management, LLC - 1,400,000 AQR Capital Management Holdings, LLC - 1,400,000 AQR Arbitrage, LLC - 1,400,000 AQR Global Alternative Investment Offshore Fund, L.P. - 838,420 AQR Capital Management GP Ltd. - 838,420
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary. See Item 2(a) above.
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.

AQR Capital Management, LLC

Signature:	Henry Parkin
Name/Title:	Authorized Signatory
Date:	08/14/2026

AQR Capital Management Holdings, LLC

Signature:	Henry Parkin
Name/Title:	Authorized Signatory
Date:	08/14/2026

AQR Arbitrage, LLC

Signature:	Henry Parkin
Name/Title:	Authorized Signatory
Date:	08/14/2026

AQR Global Alternative Investment Offshore Fund, L.P.

Signature:	Henry Parkin
Name/Title:	Authorized Signatory
Date:	08/14/2026

AQR Capital Management GP Ltd.

Signature:	Henry Parkin
Name/Title:	Authorized Signatory
Date:	08/14/2026

Exhibit Information

AQR Capital Management Holdings, LLC, AQR Capital Management, LLC, AQR Arbitrage, LLC, AQR Global Alternative Investment Offshore Fund, L.P., and AQR Capital Management GP Ltd. hereby agree that this Schedule 13G is filed on behalf of each of the parties. 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 AQR Global Alternative Investment Offshore Fund, L.P. AQR Capital Management GP Ltd. is the general partner of AQR Global Alternative Investment Offshore Fund, L.P.