Robert Quartermain reports 7.36% Dakota Gold (DC) stake in amended 13G

Rhea-AI Filing Summary

Dakota Gold Corp. shareholder Robert Quartermain filed an amended Schedule 13G reporting his beneficial ownership of 8,453,284 shares of common stock, representing 7.36% of the company’s outstanding shares as of December 31, 2025. This reflects a significant but non‑controlling stake.

The ownership includes 7,595,771 common shares plus equity incentives and derivatives: 41,380 restricted stock units, options to purchase 275,000 shares, and warrants to purchase 541,133 shares that are exercisable within 60 days of December 31, 2025. Dakota Gold had 114,068,842 common shares outstanding on that date.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 2)

Dakota Gold Corp.

(Name of Issuer)

Common stock, par value $0.001 per share

(Title of Class of Securities)

23426V109

(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. 23426V109

1

Names of Reporting Persons

Robert Quartermain

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

CANADA (FEDERAL LEVEL)

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 8,453,284.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 8,453,284.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

8,453,284.00

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)

7.36 %

12

Type of Reporting Person (See Instructions)

IN

Comment for Type of Reporting Person: Class percentage is calculated based upon 114,068,842 shares of common stock of Dakota Gold Corp., par value $0.001 per share, issued and outstanding as of December 31, 2025. Includes (i) 7,595,771 shares of common stock, (ii) 41,380 restricted stock units vesting within 60 days of December 31, 2025, (iii) options to purchase 275,000 shares of common stock that are exercisable within 60 days of December 31, 2025 and (iv) warrants to purchase 541,133 shares of common stock that are exercisable within 60 days of December 31, 2025.

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Dakota Gold Corp.
(b)	Address of issuer's principal executive offices: 106 Glendale Drive Suite A Lead, SD, 57754
Item 2.
(a)	Name of person filing: Robert Quartermain
(b)	Address or principal business office or, if none, residence: 106 Glendale Drive, Suite A, Lead, South Dakota 57754
(c)	Citizenship: Canada
(d)	Title of class of securities: Common stock, par value $0.001 per share
(e)	CUSIP No.: 23426V109
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: 8,453,284
(b)	Percent of class: 7.36%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 8,453,284
	(ii) Shared power to vote or to direct the vote: None
	(iii) Sole power to dispose or to direct the disposition of: 8,453,284
	(iv) Shared power to dispose or to direct the disposition of: None
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.
	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.

Robert Quartermain

Signature:	/s/ Robert Quartermain
Name/Title:	Robert Quartermain
Date:	02/12/2026

FAQ

What ownership stake in Dakota Gold Corp. (DC) does Robert Quartermain report?

Robert Quartermain reports beneficial ownership of 8,453,284 Dakota Gold Corp. shares, equal to 7.36% of the common stock as of December 31, 2025. This indicates a sizable but non-controlling position in the company’s equity base.

How is Robert Quartermain’s 8,453,284-share position in Dakota Gold (DC) composed?

The 8,453,284 beneficially owned shares include 7,595,771 common shares, plus 41,380 restricted stock units, options for 275,000 shares, and warrants for 541,133 shares, all exercisable or vesting within 60 days of December 31, 2025.

What percentage of Dakota Gold Corp. (DC) does 8,453,284 shares represent?

Quartermain’s 8,453,284 beneficially owned shares represent 7.36% of Dakota Gold’s common stock. This percentage is calculated using 114,068,842 shares outstanding as of December 31, 2025, as disclosed in the ownership statement.

How many Dakota Gold Corp. (DC) shares were outstanding for this Schedule 13G/A?

The filing states that Dakota Gold Corp. had 114,068,842 common shares outstanding as of December 31, 2025. This figure is used to calculate Robert Quartermain’s 7.36% beneficial ownership reported in the amended Schedule 13G.

Does Robert Quartermain have sole or shared voting power over Dakota Gold (DC) shares?

The statement reports sole voting and dispositive power over 8,453,284 shares and no shared voting or dispositive power. This means decisions on voting and selling these reported securities rest solely with him under the filing’s definitions.

What type of filing did Robert Quartermain submit for Dakota Gold Corp. (DC)?

He submitted an Amendment No. 2 to Schedule 13G for Dakota Gold Corp. common stock. Schedule 13G is a beneficial ownership report used by certain investors holding more than 5% of a class of registered equity securities.