Dakota Gold Intersects 1.42 g/t Gold and 5.97 g/t Silver over 64.0 Meters with Infill Drilling at Richmond Hill

Rhea-AI Summary

Dakota Gold (NYSE American: DC) reported initial assays from its 2026 Richmond Hill drill campaign, highlighting infill hole RH26C-388: 1.42 g/t Au and 5.97 g/t Ag over 64.0 m, and RH26C-396: 2.37 g/t Au and 24.80 g/t Ag over 21.5 m. The Campaign totals 15,481 m across 109 holes; >75% complete. Results will feed a Pre-Feasibility Study (PFS) due in H2 2026 and represent up to ~30% new assay information versus the July 7, 2025 Initial Assessment with Cash Flow.

Positive

• Infill intercept RH26C-388: 1.42 g/t Au over 64.0 m
• Higher-grade intercept RH26C-396: 2.37 g/t Au over 21.5 m
• Campaign scale: 15,481 m across 109 holes
• Drilling represents ~30% new assay information versus prior resource

Negative

• Campaign not complete; remaining drilling and assays extend into Q3 2026
• Reported intervals state true thickness unknown, limiting immediate resource conversion certainty

News Market Reaction – DC

-5.54%

1 alert

-5.54% Session close to close

$774.40M Market Cap

1.81K Volume

In the Apr 21 session, DC declined 5.54%, reflecting a notable negative market reaction.

Data tracked by StockTitan Argus on the day of publication.

Market Context

The stock moved -5.5% in the session following this news. A negative reaction despite strong grades ...

Analysis

The stock moved -5.5% in the session following this news. A negative reaction despite strong grades would fit a recent pattern where Richmond Hill drill updates on Feb 5 and Mar 17, 2026 coincided with declines of 6.54% and 2.87%. The latest infill holes, including 1.42 g/t Au over 64.0 m, exceed the prior 0.566 g/t Au mine‑plan grade, but the stock has also contended with a February equity offering and an active S‑3 shelf, which may keep risk perceptions and funding overhang elevated.

Key Figures

Gold grade RH26C-388: 1.42 g/t Au over 64.0 m Silver grade RH26C-388: 5.97 g/t Ag over 64.0 m Gold grade RH26C-396: 2.37 g/t Au over 21.5 m +5 more

8 metrics

Gold grade RH26C-388 1.42 g/t Au over 64.0 m Richmond Hill 2026 infill drilling

Silver grade RH26C-388 5.97 g/t Ag over 64.0 m Richmond Hill 2026 infill drilling

Gold grade RH26C-396 2.37 g/t Au over 21.5 m Richmond Hill 2026 infill drilling

Silver grade RH26C-396 24.80 g/t Ag over 21.5 m Richmond Hill 2026 infill drilling

Average mine plan grade 0.566 g/t Au Measured & Indicated mine plan grade from July 7, 2025 IACF

2026 drill campaign size 15,481 m in 109 holes Planned Richmond Hill 2026 drilling

2026 drilling completed 11,982 m in 80 holes Over 75% of planned 2026 Richmond Hill program

New assay contribution Over 350 drill holes; ~30% new data Assays feeding PFS vs IACF resource estimate

Historical Context

5 past events · Latest: Mar 17 (Positive)

Pattern 5 events

Date	Event	Sentiment	24h Move	Catalyst
Mar 17	Drill results	Positive	-2.9%	Reported 3.14 g/t Au and 10.57 g/t Ag over 13.4 m in expansion drilling.
Feb 27	Board change	Neutral	+1.3%	Appointed Brian G. Iverson, adding extensive legal and regulatory experience.
Feb 09	Equity offering price	Negative	-11.2%	Priced U.S. public offering of 12,336,000 shares for gross proceeds of $75.0M.
Feb 09	Equity offering	Negative	-11.2%	Announced $75M common stock offering under effective shelf with 15% overallotment.
Feb 05	Drill results	Positive	-6.5%	Released Richmond Hill results including 5.00 g/t Au over 24.9 m and silver update.

24h Move is the share-price change in the day after each event; other market factors may also have contributed.

Pattern Detected

Recent Richmond Hill drill updates with strong grades have coincided with negative next-day moves, while financing headlines have seen declines broadly in line with their dilutive nature.

Recent Company History

Over the last few months, Dakota Gold’s key developments have centered on Richmond Hill drilling, equity financing, and governance. On Feb 5, 2026 and Mar 17, 2026, the company reported high‑grade drill results, yet the stock fell 6.54% and 2.87% the next day. In contrast, February’s $75 million equity offering and follow‑on pricing news each saw about an 11.23% decline, consistent with dilution concerns. A board appointment on Feb 27, 2026 drew a modestly positive reaction of 1.31%. Today’s drilling update continues the theme of building a PFS‑ready dataset at Richmond Hill.

Key Terms

grams per tonne, heap leach, pre-feasibility study, indicated resource, +3 more

7 terms

grams per tonne technical

"intersected 1.42 grams per tonne gold (g/t Au) and 5.97 g/t silver"

Grams per tonne (g/t) is a measure of how many grams of a precious or base metal are contained in one tonne of rock or ore. It tells investors the concentration of the metal: higher g/t means more metal packed into the same amount of material, which can lower production costs and raise the potential value of a mine. Think of it like the amount of sugar in a slice of cake—the more sugar per slice, the sweeter (and more valuable) each slice is.

heap leach technical

"Richmond Hill Oxide Heap Leach Gold Project ("Richmond Hill" or the "Project")"

Heap leach is a mining method where crushed ore is piled into a heap and a liquid is dripped or sprayed over it to dissolve valuable metals, which are then collected from the runoff. Investors care because it is a lower-cost, scalable way to produce metals like gold or copper, but it also affects project timelines, recovery rates, capital needs and environmental or regulatory risk — like choosing a cheap, slow way to extract juice from a fruit versus pressing it quickly.

pre-feasibility study technical

"will be incorporated into a Pre-Feasibility Study ("PFS") being published"

A pre-feasibility study is an initial assessment that evaluates whether a proposed project or investment idea is worth exploring further. It involves examining basic factors like costs, potential benefits, and possible challenges, similar to conducting a preliminary check before deciding to invest more time and resources. This helps investors determine if pursuing the project further is practical and likely to be successful.

indicated resource technical

"conversion of inferred resources to the indicated resource category"

An indicated resource is a quantity of minerals estimated from sample data with a moderate level of confidence—higher than a rough estimate but not as certain as a fully proven quantity. For investors, it signals a reasonable but still uncertain expectation that commercial extraction could be feasible; think of it like a well‑researched recipe where ingredients and amounts are likely correct but still need final confirmation before you start cooking or spending large sums.

inferred resources technical

"conversion of inferred resources to the indicated resource category"

An inferred resource is an early-stage estimate of how much mineral or fuel may be present in the ground based on limited geological evidence and sampling. Think of it like seeing scattered clues that suggest a buried treasure might exist but not having dug enough to be sure; the potential size and value are uncertain. For investors it signals possible upside but carries high risk and should not be treated as proven supply or relied on for firm production plans.

cut-off technical

"Intervals calculated based on 0.5 g/t Au cut-off and maximum dilution"

A cut-off is a specific deadline or set point that determines which items, people, or data are included or excluded for a financial, regulatory, or medical process. For investors it matters because it fixes who qualifies for dividends, shareholder votes, trial results, or financial reporting — like drawing a line on a guest list so only those on the right side participate or count. Missing a cut-off can change ownership rights, reported outcomes, or the timing of news that affects a stock.

oxide technical

"Richmond Hill Oxide Heap Leach Gold Project ("Richmond Hill" or the "Project")"

An oxide is a chemical compound formed when oxygen bonds with another element—common examples include rust on iron or the glassy coating on some metals. Investors care because oxides affect how materials behave (durability, conductivity, or reactivity), influence manufacturing costs and yields, and can trigger safety or environmental rules; changes in oxide-related technology or regulation can therefore alter a company’s expenses, product performance, or market position.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Lead, South Dakota--(Newsfile Corp. - April 21, 2026) - Dakota Gold Corp. (NYSE American: DC) ("Dakota Gold" or the "Company") is pleased to report the initial assay results received from its 2026 Drill Campaign ("Campaign") at the Richmond Hill Oxide Heap Leach Gold Project ("Richmond Hill" or the "Project"). The Campaign includes 15,481 meters of drilling for 109 holes and consists of a combination of infill, expansion and geotechnical drilling. Gold and silver assay results from the 2025 and 2026 drill campaigns at Richmond Hill will be incorporated into a Pre-Feasibility Study ("PFS") being published in the second half of 2026.

Highlights from this update include:

• Infill drill hole RH26C-388 intersected 1.42 grams per tonne gold (g/t Au) and 5.97 g/t silver (Ag) over 64 meters (91 gram meters Au) and RH26C-396 intersected 2.37 g/t Au and 24.80 g/t Ag over 21.5 meters (51 gram meters Au). Many higher-grade gold mineralization intersections have been encountered in the 2025 and 2026 drill campaigns that exceed the average grade of 0.566 g/t Au published in the July 7, 2025 Initial Assessment with Cash Flow ("IACF"). These above average-grade intersections have the potential to positively impact mine sequencing within the PFS and are being considered in the current trade-off studies.

• The initial assay results reported today are primarily from infill drilling in the northern portion of the Project designed to support reserve conversion planned for 2026. This drilling targets areas of previously defined near-surface mineralization where tighter drill spacing is expected to support conversion of inferred resources to the indicated resource category.

• Over 75% of the total planned drilling for this year's Richmond Hill Campaign has been completed to date with 11,982 meters in 80 drill holes. Drilling productivity and assay turnaround times remain on track, and the Campaign is expected to be completed in the third quarter of 2026.

Jack Henris, President and COO of Dakota Gold said, "We are pleased with the progress of the Campaign which is now advancing northeast to follow-up on higher-grade gold drill intercepts, as well as to conduct further resource expansion in the area. Upon completion of this resource drilling, we plan to commence geotechnical drilling in early May. The PFS will incorporate new assay information from over 350 drill holes from the 2025 and ongoing 2026 drill campaigns. This drilling represents up to approximately 30% new assay information relative to the mineral resource estimate published in the IACF, and it is expected to provide input for optimizing mine planning and sequencing. As we move toward completion of the PFS, we will illustrate Richmond Hill to be a technically robust, de-risked oxide heap leach gold project with a clear pathway to production."

Figure 1. Plan Map showing location of Dakota Gold Corp. Richmond Hill drill results reported today in Table 1. 

To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/8218/293503_6d450fdd241a3b9b_002full.jpg

Table 1. Richmond Hill Drill Results (Metric / Imperial)^{1,2,3,4,5, 6}

Hole #	From (m)	To (m)	Interval  (m)	Grade Au (g/t)	g x m  Au	Grade Ag (g/t)	g x m  Ag	From (ft)	To (ft)	Interval (ft)	Grade Au (oz/ton)
RH25R-001	76.2	89.9	13.7	0.85	12	4.01	55	250.0	295.0	45.0	0.025
	150.9	157.0	6.1	0.53	3	3.49	21	495.0	515.0	20.0	0.016
	202.7	207.3	4.6	0.81	4	7.37	34	665.0	680.0	15.0	0.024
RH25R-002	56.4	73.2	16.8	0.99	17	9.18	154	185.0	240.0	55.0	0.029
	80.8	96.0	15.2	2.96	45	35.80	546	265.0	315.0	50.0	0.086
inc.	88.4	89.9	1.5	16.15	25	86.40	132	290.0	295.0	5.0	0.471
	111.3	115.8	4.6	0.50	2	4.52	21	365.0	380.0	15.0	0.015
RH26C-363	64.8	80.1	15.3	0.92	14	25.52	391	212.6	262.8	50.2	0.027
	90.2	101.4	11.2	0.73	8	3.50	39	296.0	332.8	36.8	0.021
	113.8	117.7	3.9	1.43	6	7.14	28	373.3	386.0	12.7	0.042
RH26C-365	53.6	66.1	12.4	0.59	7	9.45	118	176.0	216.8	40.8	0.017
RH26C-366	108.9	112.1	3.2	2.13	7	3.97	13	357.2	367.8	10.6	0.062
RH26C-367	7.8	23.5	15.6	0.78	12	13.09	205	25.7	77.0	51.3	0.023
RH26C-368	2.0	11.0	9.0	1.74	16	21.66	195	6.4	36.0	29.6	0.051
	16.9	25.8	8.9	0.63	6	7.29	65	55.4	84.6	29.2	0.018
	29.1	45.9	16.9	0.61	10	5.73	97	95.4	150.7	55.3	0.018
RH26C-369	12.2	15.2	3.0	0.53	2	4.31	13	40.0	50.0	10.0	0.016
	83.0	95.1	12.1	0.69	8	18.97	230	272.3	312.0	39.7	0.020
RH26C-370	47.5	60.6	13.0	1.25	16	4.12	54	156.0	198.7	42.7	0.036
	87.8	92.0	4.2	0.60	2	3.53	15	288.1	301.8	13.7	0.017
RH26C-371	46.2	71.4	25.2	0.81	20	11.84	299	151.6	234.3	82.7	0.024
	91.4	99.1	7.6	0.81	6	5.89	45	300.0	325.0	25.0	0.024
	105.2	114.8	9.7	0.90	9	5.56	54	345.0	376.8	31.8	0.026
RH26C-372	0.0	8.2	8.2	0.59	5	2.83	23	0.0	27.0	27.0	0.017
	117.8	126.7	8.9	1.48	13	8.19	73	386.5	415.6	29.1	0.043
	156.3	163.7	7.4	1.23	9	3.04	23	512.7	537.0	24.3	0.036
RH26C-373	52.0	73.9	21.9	1.27	28	16.92	371	170.5	242.5	72.0	0.037
	83.2	86.3	3.1	0.73	2	3.51	11	272.9	283.0	10.1	0.021
RH26C-374	10.2	18.9	8.7	0.99	9	6.12	53	33.6	62.0	28.4	0.029
	23.8	30.5	6.7	0.72	5	6.15	41	78.2	100.1	21.9	0.021
	64.5	68.5	4.1	0.73	3	4.34	18	211.5	224.8	13.3	0.021
	80.3	84.4	4.1	0.57	2	3.36	14	263.6	277.0	13.4	0.017
	135.5	151.1	11.1	0.65	7	14.00	155	444.7	495.6	36.4	0.019
RH26C-375	93.8	98.8	5.0	0.52	3	15.14	75	307.7	324.0	16.3	0.015
	140.1	145.1	5.0	0.56	3	1.76	9	459.7	476.0	16.3	0.016
RH26C-376	70.7	97.7	27.0	1.07	29	14.61	394	232.0	320.6	88.6	0.031
RH26C-377	No Significant Results
RH26C-378	76.1	79.9	3.8	0.68	3	3.01	11	249.7	262.2	12.5	0.020
RH26C-379	107.9	128.6	20.7	1.17	24	6.63	137	354.0	422.0	68.0	0.034
	132.1	135.9	3.9	0.72	3	18.73	72	433.3	446.0	12.7	0.021
RH26C-380	No Significant Results
RH26C-382	No Significant Results
RH26C-383	11.1	15.5	4.4	0.65	3	5.80	25	36.4	50.8	14.4	0.019
	33.0	45.6	12.6	0.69	9	2.80	35	108.2	149.6	41.4	0.020
	83.3	88.3	5.0	1.21	6	7.37	37	273.4	289.8	16.4	0.035
	139.6	142.9	3.3	1.81	6	70.47	232	458.0	468.8	10.8	0.053
RH26C-384	84.3	90.1	5.9	0.53	3	4.41	26	276.5	295.7	19.2	0.015
	221.3	229.1	7.8	0.76	6	26.29	206	726.0	751.7	25.7	0.022
RH26C-385	114.1	124.1	9.9	0.56	6	58.75	582	374.5	407.0	32.5	0.016
RH26C-386	161.2	165.1	3.9	0.62	2	6.76	26	528.9	541.6	12.7	0.018
	168.5	172.0	3.5	0.81	3	7.86	28	552.8	564.3	11.5	0.024
	196.9	200.7	3.8	0.54	2	16.19	61	646.0	658.4	12.4	0.016
	214.9	219.6	4.7	0.69	3	7.50	35	705.0	720.5	15.5	0.020
	233.7	242.9	9.3	0.99	9	14.78	137	766.6	797.0	30.4	0.029
RH26C-388	0.0	9.3	9.3	0.76	7	6.15	57	0.0	30.6	30.6	0.022
	24.0	87.2	64.0	1.42	91	5.97	382	78.6	286.0	207.4	0.041
RH26C-390	93.6	100.6	7.0	0.62	4	10.12	71	307.0	330.0	23.0	0.018
	103.9	107.3	3.4	1.05	4	28.13	94	341.0	352.0	11.0	0.030
	116.1	120.7	4.6	0.62	3	5.22	24	381.0	396.0	15.0	0.018
RH26C-391	4.8	24.6	19.8	0.79	16	6.65	132	15.8	80.8	65.0	0.023
	45.1	52.9	7.8	0.55	4	6.65	52	147.9	173.6	25.7	0.016
RH26C-392	No Significant Results
RH26C-395	21.5	25.6	4.1	1.92	8	3.56	14	70.7	84.0	13.3	0.056
	50.9	54.6	3.7	4.07	15	1.89	7	167.0	179.0	12.0	0.119
	125.0	134.1	9.1	1.59	15	9.83	90	410.0	440.0	30.0	0.046
RH26C-396	3.6	7.3	3.7	0.99	4	14.26	53	11.9	24.0	12.1	0.029
	10.8	17.6	6.8	1.21	8	15.19	104	35.5	57.9	22.4	0.035
	20.7	42.2	21.5	2.37	51	24.80	533	68.0	138.5	70.5	0.069
inc.	29.9	31.1	1.2	16.10	20	39.30	48	98.0	102.0	4.0	0.470
RH26C-397	83.0	103.0	20.1	1.15	23	4.66	93	272.2	338.0	65.8	0.034
	127.6	148.0	20.4	1.84	38	6.69	137	418.7	485.7	67.0	0.054

 
The table may contain rounding errors.

1. Abbreviations in the table include ounces per ton ("oz/ton"); grams per tonne ("g/t"); feet ("ft"); meter ("m"); gram meters ("g x m").
2. True thickness unknown.
3. Intervals calculated based on 0.5 g/t Au cut-off and maximum dilution of 3.05 meters.
4. The July 7, 2025 Initial Assessment with Cash Flow has an open pit designed with 12.2m (40 ft) benches. The average grade for the Measured and Indicated mine plan is 0.566 g/t Au (0.017 oz/ton). A gram meter of 7 and above has been highlighted in Table 1 based on the bench height and average grade.
5. The following monitoring water well holes drilled outside of the resource area for permitting has confirmed no significant gold mineralization: BG-GW-01, BG-GW-12, CC-GW-08, CC-GW-10, CC-GW-12B
6. The following southeast infrastructure drill holes outside of the planned mining area has confirmed no significant gold mineralization: RH26C-362; RH26C-364
    

About Dakota Gold Corp.

Dakota Gold is expanding the legacy of the 145-year-old Homestake Gold Mining District by advancing the Richmond Hill Oxide Heap Leach Gold Project to commercial production as soon as 2029, and outlining a Tertiary maiden resource as well as a high-grade underground gold resource at the Maitland Gold Project, both located on private land in South Dakota.

Subscribe to Dakota Gold's e-mail list at www.dakotagoldcorp.com to receive the latest news and other Company updates.

Shareholder and Investor Inquiries

For more information, please contact:

Jack Henris
President and COO
Tel: +1 605-717-2540

Shawn Campbell
Chief Financial Officer
Tel: +1 778-655-9638

Carling Gaze
VP of Investor Relations and Corporate Communications
Tel: +1 605-679-7429
Email: info@dakotagoldcorp.com

Qualified Person and S-K 1300 Disclosure

William Gehlen, a Certified Professional Geologist (CPG-10626) with the AIPG , American Institute of Professional Geologists, a Senior Fellow with the SEG, and Senior Manager - Geology of Dakota Gold Corp., is the Company's designated qualified person (as defined in Subpart 1300 of Regulation S-K) for this news release and has reviewed and approved its scientific and technical content.

Quality Assurance/Quality Control consists of regular insertion of certified reference materials, duplicate samples, and blanks into the sample stream. Samples are submitted to the ALS Geochemistry sample preparation facility in Winnipeg, Manitoba. Gold and multi-element analyses are performed at the ALS Geochemistry laboratory in Vancouver, British Columbia. ALS Minerals is an ISO/IEC 17025:2017 accredited lab. Check samples are submitted to Bureau Veritas, Vancouver B.C. as an umpire laboratory. Assay results are reviewed, and discrepancies are investigated prior to incorporation into the Company database.

Forward-Looking Statements

This communication contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. When used in this communication, the words "plan," "target," "anticipate," "believe," "estimate," "intend," "potential," "will" and "expect" and similar expressions are intended to identify such forward-looking statements. Any express or implied statements contained in this communication that are not statements of historical fact may be deemed to be forward-looking statements, including, without limitation: our expectations regarding additional drilling, metallurgy and modeling; our expectations for the improvement and growth of the mineral resources and potential for conversion of mineral resources into reserves; completion of a pre-feasibility study, a feasibility study, and/or permitting; and our overall expectation for the possibility of near-term production at the Richmond Hill project. These forward-looking statements are based on assumptions and expectations that may not be realized and are inherently subject to numerous risks and uncertainties, which could cause actual results to differ materially from these statements. These risks and uncertainties include, among others: the execution and timing of our planned exploration activities; our use and evaluation of historic data; our ability to achieve our strategic goals; the state of the economy and financial markets generally and the effect on our industry; and the market for our common stock. The foregoing list is not exhaustive. For additional information regarding factors that may cause actual results to differ materially from those indicated in our forward-looking statements, we refer you to the risk factors included in Item 1A of the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2025, as updated by annual, quarterly and current reports that we file with the SEC, which are available at www.sec.gov. We caution investors not to place undue reliance on the forward-looking statements contained in this communication. These statements speak only as of the date of this communication, and we undertake no obligation to update or revise these statements, whether as a result of new information, future events or otherwise, except as may be required by law. We do not give any assurance that we will achieve our expectations.

All references to "$" in this communication are to U.S. dollars unless otherwise stated.

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/293503

FAQ

What did Dakota Gold (DC) report on April 21, 2026 about Richmond Hill drill results?

The company reported initial assays showing RH26C-388 with 1.42 g/t Au over 64.0 m and RH26C-396 with 2.37 g/t Au over 21.5 m. According to the company, these infill results will be included in a PFS planned for H2 2026.

How much drilling has Dakota Gold completed at Richmond Hill in 2026 (DC)?

Over 75% of the 2026 Campaign is complete, with 11,982 m in 80 holes finished to date. According to the company, the full Campaign totals 15,481 m across 109 holes, with completion expected in Q3 2026.

Will the Richmond Hill drill results affect Dakota Gold's (DC) Pre-Feasibility Study timing?

Yes. The company says assays from 2025 and 2026 drilling will be incorporated into the PFS due in H2 2026. According to the company, new assay data representing up to ~30% new information will inform trade-off and mine-sequencing studies.

Do the April 21, 2026 Richmond Hill assays indicate higher grades than prior estimates for DC?

Some intersections exceed the prior average grade of 0.566 g/t Au from the July 7, 2025 assessment. According to the company, higher-grade intervals could positively influence mine sequencing in the upcoming PFS.

Are there any drill holes at Richmond Hill with no significant gold reported by Dakota Gold (DC)?

Yes. The company reported multiple holes with no significant gold, including monitoring and infrastructure holes like BG-GW-01 and RH26C-362. According to the company, these confirm limited mineralization outside planned mining areas.