Mr. Ken Armstrong reports

WESTHAVEN REPORTS SOUTH zone RESOURCE INFILL DRILLING CONTINUES TO CONFIRM CONTINUITY OF HIGH-GRADE GOLD AND SILVER MINERALIZATION INCLUDING 27.51M GRADING 14.47 G/T AU and 52 G/T AG SHOVELNOSE GOLD PROPERTY, SOUTHERN BRITISH COLUMBIA

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

• 35,000 m resource infill drilling is 66 per cent complete with four active drills on the South zone deposit;
• New highlight assays include:
  • 27.51 m grading 14.47 grams per tonne Au (gold) and 52.3 g/t Ag (silver);
  • 30.76 m grading 3.31 g/t Au and 21.3 g/t Ag;
  • 0.52 m grading 200 g/t Au and 141 g/t Ag;
  • 16.80 m grading 4.63 g/t Au and 19.6 g/t Ag;
  • 11.65 m grading 5.20 g/t Au and 15.9 g/t Ag.
• A fifth, exploration focused drill is now operational on the property targeting potential resource growth through a 15,000 m exploration drilling program

Ken Armstrong, president and chief executive officer of Westhaven, commented:

"Resource infill drilling of the South zone deposit continues to return strong results, confirming the continuity of thick, high-grade gold and silver mineralization within both Vein zone 1 and Vein zone 2. Today's results also include the highest gold assay (0.52 m grading 200 g/t gold and 141 g/t silver) returned to date from the program. Interestingly this interval is located at the northern extent of the planned drilling of the deposit, indicating that exceptional gold grades continue to the north of the presently defined resource into the Alpine target area. With four drills now focused on the infill program and a fifth drill conducting exploration drilling on near deposit targets, we continue to expect a steady flow of results over the next several months as we work in parallel on expanding known mineralization and generating potential resource growth across Shovelnose."

Highlight results reported today include intersections of 16.80 m grading 4.63 g/t Au and 19.6 g/t Ag and 27.51 m grading 14.47 g/t Au and 52.3 g/t Ag from drill hole SNR26-99 and 30.76 m grading 3.31 g/t Au and 21.3 g/t Ag from drill hole SNR26-114. Additionally, hole SNR26-113, testing the northern extent of the deposit returned a 0.52 m section grading 200 g/t Au and 141 g/t Ag, representing the highest single assay reported to date from the infill program. The 2026 field program has also entered a new phase of potential discovery and resource growth with a fifth diamond drill actively testing exploration targets on Shovelnose as part of a 15,000 m exploration drilling program expected to continue through mid-December. This work is being funded under a strategic earn-in agreement with Dundee Corp., 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 resource infill and exploration drill program and continuing prefeasibility study (PFS) work at Shovelnose.

South zone mineral resource infill drilling

Assay results from the ongoing 35,000 m 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. Results have been received from an additional 14 infill drill holes and are reported in Table 1. The resource drilling program has been designed to infill the deposit at nominal 25 m centres with results to be included in an updated mineral resource estimate to support a PFS targeting completion in H2 2027. To date, 73 drill holes (23,184 m) have been completed representing approximately two-thirds of the planned program metreage.

Selected assay highlights include:

• SNR26-90: 11.65 m grading 5.20 g/t Au and 16 g/t Ag from 79.85 m down hole;
• SNR26-97: 13.50 m grading 2.98 g/t Au and 10 g/t Ag from 132.00 m down hole;
• SNR26-99: 16.80 m grading 4.63 g/t Au and 20 g/t Ag from 133.25 m down hole:
  • 27.51 m grading 14.47 g/t Au and 52 g/t Ag from 274.27 m down hole including:
  • 2.07 m grading 107.5 g/t Au and 334 g/t Ag from 283.12 m.
• SNR26-102: 5.20 m grading 9.19 g/t Au and 36 g/t Ag from 56.00 m down hole;
• SNR26-113: 0.52 m grading 200 g/t Au and 141 g/t Ag from 178.86 m down hole;
• SNR26-114: 30.76 m grading 3.31 g/t Au and 21 g/t Ag from 236.24 m down hole.

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

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-millimetre (Tyler nine mesh, U.S. Std. No. 10) screen. A split of 250 g is taken and pulverized to better than 85 per cent passing a 75-micrometre (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 via ICP-MS (method code ME-MS61 m (plus Hg (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 g sample size) or Au-ICP22 (50 g sample size). Samples returning gold values over 10 ppm (parts per million) are subjected to overlimit check assays using fire assay and a gravimetric finish (method code Au-GRA21 and a 30 g sample size, or Au-GRAV22 and a 50 g sample size). The switch to 50 g 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 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 gray 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 Westhaven Gold Corp.

Westhaven is a gold- and silver-focused exploration and development company targeting low sulphidation, high-grade, epithermal style gold and silver mineralization within the Spences Bridge gold belt in Southern British Columbia. Westhaven controls approximately 60,263 hectares within four properties spread along this underexplored belt.

The Shovelnose gold and silver project is the most advanced property, with a 2025 updated preliminary economic assessment that validates the project's potential as a robust, low-cost and high-margin 11-year underground gold mining opportunity with average annual life-of-mine production of 56,000 ounces gold and 313,000 ounces silver with a $454-million after-tax net present value (at a 6-per-cent discount rate) and 43.2-per-cent IRR (internal rate of return) (base case parameters of $2,400 (U.S.) per ounce gold, $28 (U.S.) per ounce silver and Canadian dollar/United States dollar exchange rate of $1.00:72 U.S. cents).

On Feb. 23, 2026, Westhaven closed a strategic earn-in agreement with Dundee Corp., 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 m drill program and pr-feasibility work at Shovelnose. The agreement allows for the accelerated exploration and evaluation of one of Canada's most compelling, undeveloped, high-margin gold and silver assets.

Qualified person

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

We seek Safe Harbor.