Mr. Jonathan Goodman reports

DUNDEE HIGHLIGHTS HIGH-GRADE DRILL RESULTS EXTENDING KNOWN MINERALIZATION AND REINFORCING GROWTH POTENTIAL AT SHOVELNOSE SOUTH ZONE

Dundee Corp. has released the fifth batch of assay results from the continuing 35,000-metre resource infill drilling program, presently supported by four drill rigs at Westhaven Gold Corp.'s South Zone gold and silver deposit on the Shovelnose gold property in Southern British Columbia.

"These are exceptional results and among the most encouraging we have seen from the program to date," said Jonathan Goodman, president and chief executive officer of Dundee. "We continue to intersect high-grade gold and silver mineralization while extending the known mineralized envelope of the deposit. Particularly exciting is the continuity of mineralization through the drill program, including high-grade intercepts encountered at depth and along the margins of the system. Results such as these continue to build our confidence in the scale and strength of the mineralized system at Shovelnose and reinforce our enthusiasm for the ongoing drill campaign."

Highlight results reported today include intersections of 37.34 metres grading 6.24 grams per tonne gold and 55 grams per tonne silver (SNR26-110) in the southeastern part of the South Zone deposit, and 10.04 m grading 12.18 g/t Au and 103 g/t Ag (SNR26-117) located below the known mineralization. In addition to the infill resource drilling, the 2026 field program continues with exploration drilling and surface fieldwork within the greater Shovelnose property area and is expected to continue through mid-December.

South zone mineral resource infill drilling

Assay results from the continuing 35,000-metre resource infill drilling program at the South Zone deposit continue to show excellent continuity of mineralization in each of vein zones 1, 2 and 3. All assay results related to the additional six infill drill holes are presented in Table 1. For previously reported assay results from the South Zone mineral resource drilling program, please refer to the corporation's press releases dated May 7, 2026, May 26, 2026, July 7, 2026, and July 28, 2026. The drilling program has been designed to infill the deposit at nominal 25-metre centres, with results to be included in an updated mineral resource estimate to support a prefeasibility study (PFS) targeting completion in the second half of 2027. To date, 85 drill holes (26,581 m) have been completed, representing approximately three-quarters of the planned program metreage.

Table 1 shows assay results, including drill hole locations and orientations. Reported assay intervals represent downhole intersections, not true widths. True widths can be estimated at approximately 70 to 80 per cent of the reported intervals.

On Feb. 23, 2026, the corporation completed a strategic earn-in agreement with Westhaven, whereby Dundee may earn up to a 60-per-cent interest in Westhaven's four Spences Bridge gold belt properties through up to $85-million in staged project expenditures. Under the first phase, Dundee has committed a minimum of $30-million, inclusive of a fully financed 50,000-metre drill program at Shovelnose, which is financing the activities outlined in this news release and is expected to continue through the remainder of 2026.

Sampling, laboratory analyses and quality assurance/quality control (QA/QC)

Most core samples consist of halved drill core cut by manual sawing using industry-standard core saws. In rare cases and where required by physical core conditions, manual splitting may be used. Half of the core is retained in the original core box for reference samples and any required future work, including QA/QC. Core samples, controlled by a unique bar-coded reference number, are delivered to ALS's Kamloops facility and prepared using the PREP-31 package. Each core sample is crushed to better than 70 per cent passing a two-millinetre (Tyler 9 mesh, U.S. Std. No. 10) screen. A split of 250 grams is taken and pulverized to better than 85 per cent passing a 75-micron (Tyler 200 mesh, U.S. Std. No. 200) screen.

Further analytical and assay procedures are conducted in ALS's North Vancouver facility. A 0.75-gram subsample of the pulverized split is subjected to four-acid digestion and analyzed by ICP-MS (method code ME-MS61m (plus mercury)), which reports a suite of 49 elements.

All samples are also analyzed for gold by fire assay with an AES finish, method code Au-ICP21 (30-gram sample size) or Au-ICP22 (50-gram sample size). Samples returning gold values over 10 parts per million are subjected to overlimit check assays using fire assay and a gravimetric finish (method code Au-GRA21 and a 30-gram sample size or Au-GRAV22 and a 50-gram sample size). The switch to 50-gram aliquots applies to 2026 resource infill drill holes starting at and including SNR26-98. Other overlimit elements may also be subjected to ore-grade analyses, which vary depending on the element of interest.

ALS's facilities are independent of the corporation and Westhaven and are accredited to the ISO/IEC 17025 standard for gold assays, and all analytical methods include quality control materials at set frequencies with established data acceptance criteria.

QA/QC incorporates the laboratory's internal quality assurance controls as well as Westhaven's field controls, including the insertion of quarter-core duplicates, certified reference materials and blanks, each at a rate of roughly one per 20 to 25 core samples.

Additional blanks are inserted following samples with visible gold or significant concentrations of ginguro (fine-grained bands of dark grey to black sulphides). QA/QC data are evaluated on receipt for failures, and appropriate action is taken if results for duplicates, standards and blanks fall outside allowed tolerances. Westhaven's continuing QA/QC programs are consistent with industry best practices and include auditing of all exploration data. Any significant changes will be reported when available.

About Dundee Corp.

Dundee is a public Canadian independent mining-focused holding company, listed on the Toronto Stock Exchange under the symbol DC.A. The corporation is engaged in the identification, evaluation and advancement of mineral resource opportunities within the mining sector. The corporation is actively pursuing interests in mining and exploration projects at various stages of development. In connection with these activities, the corporation conducts technical, geological and financial due diligence and may enter into joint arrangements, strategic partnerships and other arrangements with third parties, with its level of involvement in project development and operations varying depending on the nature of the opportunity. The corporation may support the advancement of mining opportunities through involvement in development planning and oversight of key technical workstreams.

Qualified person

The scientific and technical information in this news release has been reviewed and approved by Robin Hopkins, PGeo (Northwest Territories/Nunavut), vice-president, exploration, for Westhaven and a qualified person for Westhaven under the definitions established by National Instrument 43-101, Standards of Disclosure for Mineral Projects. Mr. Hopkins is independent of Dundee.

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