SCHEDULE 13G/A 0001062993-24-003044 0001238270 XXXXXXXX LIVE 2 Common stock, par value $0.001 per share 12/31/2025 0001852353 Dakota Gold Corp. 23426V109 106 Glendale Drive Suite A Lead SD 57754 Rule 13d-1(d) Robert Quartermain Z4 8453284.00 0.00 8453284.00 0.00 8453284.00 N 7.36 IN 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. Dakota Gold Corp. 106 Glendale Drive Suite A Lead, SD, 57754 Robert Quartermain 106 Glendale Drive, Suite A, Lead, South Dakota 57754 Canada Y 8,453,284 7.36% 8,453,284 None 8,453,284 None Y Y Y Y Y Y Robert Quartermain /s/ Robert Quartermain 02/12/2026