Dakota Gold Enlargement Drilling Intersects Excessive-Grade Gold Mineralization at Richmond Hill

Dakota Gold Corp. (NYSE American: DC) (“Dakota Gold” or the “Firm”) is happy to report extra drill gap assay outcomes from the Richmond Hill Oxide Heap Leach Gold Undertaking (“Richmond Hill” or the “Undertaking”) together with enlargement drilling that has intersected gold mineralization so far as 230 meters (755 ft) north of the present Measured and Indicated useful resource boundary. Drill outcomes proceed to substantiate widespread gold mineralization and useful resource progress potential.

The Firm has safely and efficiently accomplished 242 drill holes in its 2025 drilling marketing campaign totaling 29,279 meters (~96,000 ft). Up to now, a complete of 136 drill gap assay outcomes together with the outcomes at this time have been launched from the marketing campaign so far. Assays for 106 drill holes are pending launch, together with many from northeast enlargement drilling, which can be reported as they’re obtained by way of early 2026.

Highlights from this replace embrace:

• Enlargement and infill drill holes RH25C-303 intersected 4.52 grams per tonne gold (g/t Au) over 15.2 meters (69 gram meters), together with 31.90 g/t Au over 1.8 meters (57 gram meters), RH25C-307 intersected 1.43 g/t Au over 30.2 meters (43 gram meters) and RH25C-313 intersected 1.74 g/t Au over 25.7 meters (45 gram meters). The primary two drill holes listed have been situated 50 meters (165 ft) and 100 meters (330 ft) north respectively of the present Measured and Indicated useful resource boundary. The mineralization within the northeast is barely restricted by drilling and stays open. The Firm has drill-tested the realm as much as 300 meters (980 ft) north and 535 meters (1,750 ft) vast.

• Metallurgical drill gap RH25C-261 intersected 2.87 g/t Au over 17.3 meters (50 gram meters) within the northeast Undertaking space. The Metallurgical drill testing program supplies helpful info for mine planning and helps validation of the present sources.

“We’re happy with the outcomes of enlargement drilling within the northern Undertaking space which have highlighted vital high-grade gold mineralization. These outcomes can be included into the up to date useful resource mannequin and inform the continuing Feasibility Research. Drilling will pause briefly for the rest of December and resume mid-January 2026. We sit up for sharing the remaining assay outcomes from the 2025 marketing campaign within the new yr as they’re obtained,” mentioned Jack Henris, President and COO of Dakota Gold.

The Firm’s core drilling for the 2025 marketing campaign has been designed to gather metallurgical samples for column testing, condemnation drilling beneath proposed website infrastructure for mine planning, infill drilling to improve the present useful resource, and enlargement drilling the place the useful resource stays open. The drill outcomes will refine the modelled boundaries and enhance the precision of the geo-metallurgical domains, in addition to inform each the oxide and sulfide useful resource updates for the Feasibility Research.

Determine 1. Plan Map of Dakota Gold Corp. Richmond Hill 2025 Drill Marketing campaign Highlighted Drill Outcomes.

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Desk 1. Richmond Hill Drill Outcomes (Metric / Imperial)^1,2,3,4,5,6

The desk might include rounding errors.

1. Abbreviations within the desk embrace ounces per ton (“oz/ton”); grams per tonne (“g/t”); ft (“ft”); meter (“m”); and gram meters (“g x m”).
2. True thickness unknown.
3. Intervals calculated primarily based on 0.5 g/t Au cut-off and most dilution of three.05 meters.
4. The July 7, 2025 Preliminary Evaluation with Money Move has an open pit designed with 12.2m (40 ft) benches. The common grade for the Measured and Indicated mine plan is 0.566 g/t Au (0.017 oz/ton). A gram meter of seven and above has been highlighted in Desk 1 primarily based on the bench top and common grade.
5. The next condemnation holes drilled on the location of the deliberate heap leach pad 1 has confirmed no vital gold mineralization: RH25C-269; RH25C-274; RH25C-280
6. The next monitoring water nicely gap drilled outdoors of the useful resource space for allowing has confirmed no vital gold mineralization: CC-GW-14

About Dakota Gold Corp.

Dakota Gold is increasing the legacy of the 145-year-old Homestake Gold Mining District by advancing the Richmond Hill Oxide Heap Leach Gold Undertaking to industrial manufacturing as quickly as 2029, and outlining a high-grade underground gold useful resource on the Maitland Gold Undertaking, each situated on personal land in South Dakota.

Subscribe to Dakota Gold’s e-mail record at www.dakotagoldcorp.com to obtain the newest information and different Firm updates.

Shareholder and Investor Inquiries

Certified Individual and S-Ok 1300 Disclosure

James M. Berry, a Registered Member of SME and Vice President of Exploration of Dakota Gold Corp., is the Firm’s designated certified individual (as outlined in Subpart 1300 of Regulation S-Ok) for this information launch and has reviewed and authorised its scientific and technical content material.

High quality Assurance/High quality Management consists of normal insertion of licensed reference supplies, duplicate samples, and blanks into the pattern stream. Samples are submitted to the ALS Geochemistry pattern preparation facility in Winnipeg, Manitoba. Gold and multi-element analyses are carried out on the ALS Geochemistry laboratory in Vancouver, British Columbia. ALS Minerals is an ISO/IEC 17025:2017 accredited lab. Verify samples are submitted to Bureau Veritas, Vancouver B.C. as an umpire laboratory. Assay outcomes are reviewed, and discrepancies are investigated previous to incorporation into the Firm database.

Ahead-Trying Statements

This communication incorporates forward-looking statements inside the which means of Part 27A of the Securities Act of 1933, as amended, and Part 21E of the Securities Trade Act of 1934, as amended. When used on this communication, the phrases “plan,” “goal,” “anticipate,” “consider,” “estimate,” “intend,” “potential,” “will” and “count on” and related expressions are meant to establish such forward-looking statements. Any categorical or implied statements contained on this communication that aren’t statements of historic reality could also be deemed to be forward-looking statements, together with, with out limitation: our expectations relating to extra drilling, metallurgy and modeling; our expectations for the advance and progress of the mineral sources; completion of a feasibility research, and our general expectation for the potential for near-term manufacturing on the Richmond Hill venture. These forward-looking statements are primarily based on assumptions and expectations that might not be realized and are inherently topic to quite a few dangers and uncertainties, which may trigger precise outcomes to vary materially from these statements. These dangers and uncertainties embrace, amongst others: the execution and timing of our deliberate exploration actions; our use and analysis of historic information; our means to attain our strategic targets; the state of the financial system and monetary markets typically and the impact on our business; and the marketplace for our frequent inventory. The foregoing record shouldn’t be exhaustive. For extra info relating to components that will trigger precise outcomes to vary materially from these indicated in our forward-looking statements, we refer you to the danger components included in Merchandise 1A of the Firm’s Annual Report on Type 10-Ok for the fiscal yr ended December 31, 2024, as up to date by annual, quarterly and present studies that we file with the SEC, which can be found at www.sec.gov. We warning buyers to not place undue reliance on the forward-looking statements contained on this communication. These statements communicate solely as of the date of this communication, and we undertake no obligation to replace or revise these statements, whether or not because of new info, future occasions or in any other case, besides as could also be required by legislation. We don’t give any assurance that we are going to obtain our expectations.

All references to “$” on this communication are to U.S. {dollars} except in any other case acknowledged.

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