Doubleview Extends High-Grade Domains at Hat: H099 Returns 438m of 0.40% CuEq Including 52m of 1.02% CuEq, Expanding Mineralization Envelope Around Conceptual Pit Vertically and Laterally

Vancouver, British Columbia--(Newsfile Corp. - December 4, 2025) - Doubleview Gold Corp. (TSXV: DBG) (OTCQB: DBLVF) (FSE: 1D4) ("Doubleview" or the "Company") is pleased to announce assay results from drill holes H097, H098, and H099 from its 2025 drill program at the Hat Polymetallic Deposit in northwestern British Columbia. Drill holes H097, H098 and H099 were collared from the same platform as drill holes H093-H096 and were drilled into previously untested potential extensions of the deposit and have successfully expanded the mineralized footprint approximately 100m laterally and 200 meters vertically and strengthened confidence in continuity in part of the Lisle Zone.

Highlights

• H099 returned 438.0 metres of 0.40% CuEq, including 52.0 metres of 1.02% CuEq, representing one of the strongest continuous mineralized intervals drilled at the Hat deposit to date.

• H097 and H098 confirm mineralization in previously undrilled sections and extend data approximately 200-300 metres down-dip and up to 100 metres laterally and fill important gaps in the geological exploration model. Drill holes H097, H098 and H099 when integrated into the database potentially will extend the 2024 conceptual open-pit shell by ~200 metres down-dip and up to 100 metres laterally, and demonstrate strong expansion potential that may be realized in the revised version of the 2024 Mineral Resource Estimate (MRE-2) and the Preliminary Economic Assessment (PEA).

• Drill hole analyses reported in this News Release show continuity of copper-gold-cobalt-scandium domains [scandium is an emerging critical metal and an important component of the Hat deposit], across broad intervals of the system.

• These drill holes support the Company's objective to complete an up-dated Mineral Resource Estimate (MRE-2) and a Preliminary Economic Assessment (PEA) and improve confidence in the exploration model all of which will be incorporated in the current and future engineering studies *Copper Equivalent (CuEq) values exclude scandium (Sc2O3).*

Table 1: Summary of Significant % CuEq Drill Core Intercepts

Summary of Significant Drill Core Intercepts

Notes:                         

1 - Copper Equivalent (CuEq) currently does not include Scandium

2 - The intervals presented in this table are not true widths. The true width of mineralized sections has not been determined.

3 - Metal equivalents should not be relied upon for future evaluations. Drill hole intercepts included in this news release are core lengths that may or may not represent true widths of mineralization. It is not possible to determine true widths.

4 - Parameters used to calculate Copper Equivalent: Au price (US$/oz): 2365.09; Ag price (US$/oz): 27.43; Cu price (US$/lb): 4.17; Co price (US$/lb): 14.76. Au recovery: 89.0%; Ag recovery: 68.0%; Cu recovery: 84.0%; Co recovery: 78.0%. * Copper Equivalent Calculation CuEq in % = ([Ag grade in ppm] *27.43*0.68/31.1035 + [Au grade in ppm] *2365.09*.89/31.1035 + 0.0001* [Co grade in ppm] *14.76*0.78*22.0462 + 0.0001* [Cu grade in ppm] *4.17*0.84*22.0462)/(4.17*22.0462*0.84).

These long intercepts continue to demonstrate and explore the dimensions of the horizontal and vertical porphyry-style Hat deposit mineralization enriched in copper, gold, cobalt, silver, and scandium.

Geological Interpretation

Step-Out Drilling Adds Increased Volumes

H097-H099 were planned to intersect previously undrilled areas between and beneath the trace of previously released drill holes (H093-H096). Although collared from the same surface location, the drill holes highlighted in this News Release extended the dimensions of the deposit 200-300 metres at depth and up to 100 metres laterally, successfully fulfilling the objective of characterizing untested volumes of the deposit.

Expansion of Conceptual Pit Potential

The strong continuity and grade distribution observed in drill hole H099, together with similar results from H097 and H098, extend the interpreted geometry of the mineralized body and potentially allow major extensions of the conceptual pit by approximately 200 metres vertically and ~100 metres laterally. Note: the current exploration model and conceptual pit design are based on available information and may not be supported by future drilling and engineering studies.

Continuity & Resource Confidence

The drill holes included in this News Release were planned to improve the interpretation of deposit geology and strengthen the block model used for resource estimates. The results confirm both lateral and vertical continuity of the system and will contribute to higher confidence resource categories as the model is updated.

High-Grade Domains and Depth Potential

Drill hole H099 is particularly important as it highlights a strongly mineralized area of copper, et al. metals, including more than 50 metres exceeding 1.0% CuEq, and demonstrates that high-grade zones continue to depth. The extent of such high-grade zones has not been determined.

Critical Metals: Scandium & Cobalt

While scandium (Sc2O3) is not included in CuEq calculations, scandium grades remain consistent with prior drill campaigns and continue to frame the Hat Deposit as a potentially significant North American source of critical metals.

CEO Comments

Farshad Shirvani, President and CEO, commented:
"These new step-out holes continue to validate and strengthen our geological model of the Hat Deposit. H099, in particular, delivered exceptional continuity with long and high-grade sections, confirming that the Lisle Zone remains robust at depth. The drilling extended mineralization into untested areas and demonstrated expansion potential for the conceptual pit by approximately 200 metres down-dip and 100 metres laterally.

These results reaffirm our confidence in the Hat model, highlight the presence of high-grade domains, and demonstrate meaningful depth potential. Importantly, the new holes help us improve resource confidence and will be incorporated into the upcoming resource estimation work. We are very encouraged by the consistent scandium and cobalt values across the system, strengthening Hat's profile as a strategic critical-metals project in British Columbia. Our team is already planning follow-up drilling into several newly opened areas."

Figure 1 - Drill Plan Map

A surface plan map showing locations of H097, H098, and H099 relative to earlier holes (H090-H096), plotted on top of the 3D Induced Polarization (IP) chargeability model. The map illustrates the central Lisle Zone, the 2024 conceptual pit outline, and the new volumetric extensions identified through the 2025 drilling.

To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/8003/276907_7723e6e3145a690d_001full.jpg

Figure 2 - Section View Through H099

A north-south vertical cross-section through H099 showing down-hole CuEq grades, highlighting the 438 m mineralized interval and the high-grade 52m zone exceeding 1.0% CuEq. The section illustrates how the reported drill holes extend mineralization 200-300 m below prior interpretation and opens new areas for follow-up.

To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/8003/276907_7723e6e3145a690d_002full.jpg

Other notes:

Details of the algorithm used to estimate %CuEq are presented in the notes above. The metal values used in our current algorithm are average trailing three years commodity prices, and do not reflect recent dramatic increases in prices of mineral commodities. Scandium recovery has been announced in the news release dated 25^th of November 2025 with an overall pre-optimized 82%.

Core samples are delivered securely to a fully accredited commercial laboratory and processed by industry-standard methods and include insertion of standard samples, duplicate core samples and blank samples to ensure confidence.  Assays are received from the analytical laboratory at irregular intervals, verified by reference to notes provided by our field crew, added to our database, and disseminated publicly by News Release.   

"The scandium resource potential is based on the drill holes on the property drilled for (July 25, 2024) maiden resource estimate for other metal content than scandium. The potential quantity and grade are conceptual in nature, there has been insufficient exploration to define a mineral resource, and it is uncertain if further exploration will result in the target being delineated as a mineral resource.

Table 2: Drill hole locations

Quality Assurance and Quality Control:

Hat Project drill cores are processed at Doubleview's field camp where they are photographed, measured and logged by our technical staff and then divided using a diamond bladed saw. One half is placed in a stout bag to form the assay sample that is forwarded securely to the independent analytical lab. The remaining half core is stored on site where it is available for further examination and sampling. The assay cores are subject to a Chain of Custody routine as they are shipped from camp to a bonded carrier for delivery to the lab.

All core samples are prepared and analyzed at AGAT Laboratories in Calgary, an independent ISO 17025 and ISO 9001 certified facility. Samples are dried, crushed to 70% passing 2 mm, split to obtain a 250 g representative portion, and pulverized to 85% passing 75 µm. Gold, platinum, and palladium are assayed by 30-50 g fire assay with ICP-OES finish. Multi-element analyses (up to 48 elements) are performed by four-acid digestion with ICP-OES/MS, with ore-grade assays applied where required. Selected samples are further analyzed for whole-rock oxides using lithium borate fusion with ICP-OES, and Loss on Ignition is determined separately. Routine quality assurance protocols include insertion of blanks, duplicates, and certified reference materials, ensuring accuracy and reliability of results.

Doubleview maintains a website at www.doubleview.ca.

Qualified Persons:

Erik Ostensoe, P. Geo., a consulting geologist, and Doubleview's Qualified Person with respect to the Hat Project as defined by National Instrument 43-101 Standards of Disclosure for Mineral Projects, has reviewed, and approved the technical contents of this news release. He is not independent of Doubleview as he is a shareholder in the company.

About Doubleview Gold Corp

Doubleview Gold Corp. is mineral resource exploration and development company headquartered in Vancouver, British Columbia, Canada. It is publicly traded on the TSX-Venture Exchange (TSXV: DBG), (OTCQB: DBLVF), (WKN: LA1W038), and (FSE: 1D4). Doubleview focuses on identifying, acquiring, and financing precious and base metal exploration projects across North America, with a strong emphasis on British Columbia. The company enhances shareholder value through the acquisition and exploration of high-quality gold, copper, cobalt, scandium, and silver projects-collectively critical minerals utilizing cutting-edge exploration techniques.

Doubleview's success is deeply rooted in the unwavering support of its long-term shareholders, supporters, and institutional investors. Their ongoing commitment has been instrumental in advancing the company's strategic initiatives. Doubleview looks forward to further collaborative growth and development and continues to welcome active participation from its valued stakeholders as the company expands its portfolio and strengthens its position in the critical minerals sector.

About the Hat Polymetallic Deposit

The Hat Deposit, located in northwestern British Columbia, is a polymetallic porphyry project with major resources of copper, gold, cobalt, and the potential for scandium. As one of the region's significant sources of critical minerals, the Hat deposit has undergone targeted exploration and development. The 0.2% CuEq cut-off resource estimate, as of the recently completed Mineral Resource Estimate and the Company's July 25, 2024, news release, is summarized below:

Scandium potential for the Hat Deposit is estimated to be 300 to 500 million tonnes at an average grade of 40 ppm (0.004%) Sc₂O₃.

For further details of the MRE, please refer to the Company's July 25, 2024 news release.

On behalf of the Board of Directors,

NEITHER TSX VENTURE EXCHANGE NOR ITS REGULATION SERVICES PROVIDER (AS THAT TERM IS DEFINED IN THE POLICIES OF THE TSX VENTURE EXCHANGE) ACCEPTS RESPONSIBILITY FOR THE ADEQUACY OR ACCURACY OF THIS RELEASE.

Certain of the statements made and information contained herein may constitute "forward-looking information." In particular references to the private placement and future work programs or expectations on the quality or results of such work programs are subject to risks associated with operations on the property, exploration activity generally, equipment limitations and availability, as well as other risks that we may not be currently aware of. Accordingly, readers are advised not to place undue reliance on forward-looking information. Except as required under applicable securities legislation, the Company undertakes no obligation to publicly update or revise forward-looking information, whether as a result of new information, future events or otherwise.

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/276907