Rigel Resource (NASDAQ: RRAUF) sees Duke entities report zero share ownership

Rhea-AI Filing Summary

Rigel Resource Acquisition Corp. received an updated ownership report from several Duke-affiliated entities, including Duke University, The Duke Endowment, Employees' Retirement Plan of Duke University, Gothic Corporation, Duke University Health System, Gothic HSP Corporation, and DUMAC, Inc. As of December 31, 2025, each of these reporting persons reported beneficial ownership of 0 Class A Ordinary Shares of Rigel Resource Acquisition Corp., representing 0% of the class.

The filing confirms that these institutions also reported no sole or shared voting or dispositive power over any Class A Ordinary Shares as of that date. This amendment to the ownership report indicates that the group no longer holds a stake large enough to require a significant ownership disclosure.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

Rigel Resource Acquisition Corp.

(Name of Issuer)

Class A Ordinary Shares, par value $0.0001 per share

(Title of Class of Securities)

G7573M106

(CUSIP Number)

12/31/2025

(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)

SCHEDULE 13G

CUSIP No. G7573M106

1

Names of Reporting Persons

DUMAC, Inc.

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

NORTH CAROLINA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

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)

0 %

12

Type of Reporting Person (See Instructions)

CO

SCHEDULE 13G

CUSIP No. G7573M106

1

Names of Reporting Persons

Duke University

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

NORTH CAROLINA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

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)

0 %

12

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13G

CUSIP No. G7573M106

1

Names of Reporting Persons

The Duke Endowment

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

NORTH CAROLINA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

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)

0 %

12

Type of Reporting Person (See Instructions)

EP

SCHEDULE 13G

CUSIP No. G7573M106

1

Names of Reporting Persons

Employees' Retirement Plan of Duke University

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

NORTH CAROLINA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

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)

0 %

12

Type of Reporting Person (See Instructions)

EP

SCHEDULE 13G

CUSIP No. G7573M106

1

Names of Reporting Persons

Gothic Corporation

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

NORTH CAROLINA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

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)

0 %

12

Type of Reporting Person (See Instructions)

CO

SCHEDULE 13G

CUSIP No. G7573M106

1

Names of Reporting Persons

Duke University Health System, Inc.

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

NORTH CAROLINA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

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)

0 %

12

Type of Reporting Person (See Instructions)

CO

SCHEDULE 13G

CUSIP No. G7573M106

1

Names of Reporting Persons

Gothic HSP Corporation

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

NORTH CAROLINA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

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)

0 %

12

Type of Reporting Person (See Instructions)

CO

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Rigel Resource Acquisition Corp.
(b)	Address of issuer's principal executive offices: 7 Bryant Park, 1045 Avenue of the Americas, Floor 25, New York, New York, 10018
Item 2.
(a)	Name of person filing: This statement is being filed by the following persons (collectively, the "Reporting Persons"): (1) Duke University, (2) The Duke Endowment, (3) Employees' Retirement Plan of Duke University, (4) Gothic Corporation, (5) Duke University Health System, Inc., (6) Gothic HSP Corporation, and (7) DUMAC, Inc.
(b)	Address or principal business office or, if none, residence: For each of the Reporting Persons other than DUMAC, Inc.: c/o DUMAC, Inc., 280 S Mangum St., Suite 210, Durham, NC 27701. For DUMAC, Inc.: 280 S Mangum St., Suite 210, Durham, NC 27701.
(c)	Citizenship: The citizenship of each of the Reporting Persons is North Carolina.
(d)	Title of class of securities: Class A Ordinary Shares, par value $0.0001 per share
(e)	CUSIP No.: G7573M106
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: As of December 31, 2025, each of the Reporting Persons did not beneficially own any Class A Ordinary Shares, par value $0.0001 per share (the "Class A Ordinary Shares") of Rigel Resource Acquisition Corp (the "Issuer").
(b)	Percent of class: As of December 31, 2025, each of the Reporting Persons beneficially owned 0% of the Issuer's Class A Ordinary Shares.
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: As of December 31, 2025, each of the Reporting Persons had sole power to vote or direct the vote of 0 of the Issuer's Class A Ordinary Shares.
	(ii) Shared power to vote or to direct the vote: As of December 31, 2025, each of the Reporting Persons had shared power to vote or direct the vote of 0 of the Issuer's Class A Ordinary Shares.
	(iii) Sole power to dispose or to direct the disposition of: As of December 31, 2025, each of the Reporting Persons had sole power to dispose or direct the disposition of 0 of the Issuer's Class A Ordinary Shares.
	(iv) Shared power to dispose or to direct the disposition of: As of December 31, 2025, each of the Reporting Persons had shared power to dispose or direct the disposition of 0 of the Issuer's Class A Ordinary Shares.
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
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.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.	Certifications:
	Not Applicable

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.

DUMAC, Inc.

Signature:	/s/ Robert E. McGrail
Name/Title:	Robert E. McGrail / Secretary
Date:	01/05/2026

Duke University

Signature:	/s/ Robert E. McGrail
Name/Title:	Robert E. McGrail / Authorized Signatory
Date:	01/05/2026

The Duke Endowment

Signature:	/s/ Robert E. McGrail
Name/Title:	Robert E. McGrail / Authorized Signatory
Date:	01/05/2026

Employees' Retirement Plan of Duke University

Signature:	/s/ Robert E. McGrail
Name/Title:	Robert E. McGrail / Authorized Signatory
Date:	01/05/2026

Gothic Corporation

Signature:	/s/ Robert E. McGrail
Name/Title:	Robert E. McGrail / Authorized Signatory
Date:	01/05/2026

Duke University Health System, Inc.

Signature:	/s/ Robert E. McGrail
Name/Title:	Robert E. McGrail / Authorized Signatory
Date:	01/05/2026

Gothic HSP Corporation

Signature:	/s/ Robert E. McGrail
Name/Title:	Robert E. McGrail / Authorized Signatory
Date:	01/05/2026

FAQ

What does the latest Schedule 13G/A say about Rigel Resource Acquisition Corp. (RRAUF) ownership by Duke-affiliated entities?

The Schedule 13G/A reports that Duke University, The Duke Endowment, Employees' Retirement Plan of Duke University, Gothic Corporation, Duke University Health System, Gothic HSP Corporation, and DUMAC, Inc. each had 0 beneficial ownership of Rigel Resource Acquisition Corp. Class A Ordinary Shares as of December 31, 2025, representing 0% of the class.

Which institutions are listed as reporting persons in this Rigel Resource Acquisition Corp. (RRAUF) Schedule 13G/A?

The reporting persons are Duke University, The Duke Endowment, Employees' Retirement Plan of Duke University, Gothic Corporation, Duke University Health System, Inc., Gothic HSP Corporation, and DUMAC, Inc., all organized in North Carolina.

How many Rigel Resource Acquisition Corp. Class A shares do the Duke-related reporting persons control?

Each reporting person disclosed 0 Class A Ordinary Shares beneficially owned, with 0 shares subject to sole or shared voting power and 0 shares subject to sole or shared dispositive power as of December 31, 2025.

What percentage of Rigel Resource Acquisition Corp. (RRAUF) does each reporting person hold according to the filing?

The filing states that each reporting person beneficially owned 0% of the outstanding Class A Ordinary Shares of Rigel Resource Acquisition Corp. as of December 31, 2025.

Where are the reporting persons in the Rigel Resource Acquisition Corp. Schedule 13G/A based?

Each reporting person is organized in North Carolina. Their principal business office is listed as 280 S Mangum St., Suite 210, Durham, NC 27701 (with DUMAC, Inc. specifically identified at that address).

What type of entities are identified in the Rigel Resource Acquisition Corp. (RRAUF) Schedule 13G/A?

The filing classifies the reporting persons with types such as CO (corporation), OO (other), and EP (employee benefit plan or endowment plan), reflecting corporate, institutional, and plan-related investors.

Who signed the Schedule 13G/A related to Rigel Resource Acquisition Corp. on behalf of the reporting persons?

The certifications are signed by Robert E. McGrail, identified in the signatures as Secretary and Authorized Signatory, dated January 5, 2026.