NexGold Mining Corp. (TSX-V: NEXG) (OTCQX: NXGCF) is pleased to provide an update on its ongoing 25,000-metre diamond drill program initially announced on January 22, 2025 at the Company’s Goldboro Project in Nova Scotia. The drill program is primarily designed to infill specific areas of the open pit Mineral Resource identified to improve geological and grade continuity and potentially upgrade certain areas of Inferred and Indicated Mineral Resources. The drilling is progressing well currently with two diamond drills and nearing the end of the drill program. The drilling is anticipated to be completed at the end of Q2 with final assays flowing in through the middle of Q3.

The assay results for an additional 18 infill diamond drill holes (BR-25-477 to BR-25-478, BR-25-481 to BR-25-483, BR-25-486, BR-25-489, BR-25-491, BR-25-495, BR-25-502, BR-25-505, BR-25-508, BR-25-510, BR-25-513, BR-25-518, BR-25-520, BR-25-522, and BR-25-524), totalling 2,775.3 metres, were from drilling in the proposed west pit (Figure 1; Table 1).

The Company has now released 31 (~24%) drill holes from the infill program and continues to intersect gold mineralization consistent with the existing geological model but importantly have intersected additional gold mineralization in areas where no mineralization was previously known or predicted. Mineralized solids will be adjusted where necessary to account for local variations in the model in the forthcoming mineral resource estimate later in 2025.

Kevin Bullock, President and CEO, stated: “We are nearing the completion of the 25,000-metre diamond drill program at Goldboro that was directed at infilling specific areas of the open pit Mineral Resource to improve geological and grade continuity. The results to date at the west pit are demonstrating that the general geological model is as predicted with adjustments to the mineralized solids required for local variation in position to accommodate the recently acquired data. We are also encouraged by additional intersections of gold mineralization which were not previously intersected. This data will be incorporated into a new Mineral Resource Model that will form the basis of a planned Feasibility Study Update. Assays continue to roll in from the lab and we will continue to update the market of our progress.”

Selected drill intersections from 18 diamond drill holes in this release include:

• 25.79 g/t gold over 4.5 metres (from 62.0 to 66.5 metres) including 227.0 g/t gold over 0.5 metres in hole BR-25-522;
• 18.10 g/t gold over 3.0 metres (from 102.0 to 105.0 metres) including 52.57 g/t gold over 1.0 metres in hole BR-25-489;
• 2.27 g/t gold over 11.35 metres (from 174.15 to 185.5 metres) in hole BR-25-491;
• 2.35 g/t gold over 8.0 metres (from 27.5 to 35.5 metres) in hole BR-25-477;
• 15.05 g/t gold over 1.25 metres (from 148.15 to 149.4 metres) in hole BR-25-491; and
• 1.02 g/t gold over 16.4 metres (from 190.0 to 206.4 metres) and 1.03 g/t gold over 11.0 metres (from 173.0 to 184.0 metres) in hole BR-25-508.

Figure 1: Plan map showing the location of the 18 diamond drill holes

Notes:

1. Drill hole locations reported as Universal Transverse Mercator NAD83 Zone 20 coordinates
2. Some drill hole numbers are missing from the sequence. These drill holes are not reported in this press release since they were drilled in another location and will be reported in a separate release with other contiguous or related drilling information.
3. Drill holes BR-25-466 to 475, 479, 498 and 501 were reported in previous press releases dated May 16 and June 5, 2025.

Notes:

1. Reported intervals are drilled core lengths and do not indicate true widths. True widths are estimated at between 70-100% of core length. For duplicate samples, the original sample assays are used to calculate the intersection grade. All grades are uncapped.
2. Some drill hole numbers are missing from the sequence. These drill holes are not reported in this press release since they were drilled in another location and will be reported in a separate release with other contiguous or related drilling information.
3. Drill holes BR-25-466 to 475, 479, 498 and 501 were reported in previous press releases dated May 16 and June 5, 2025.

Technical Disclosure and Qualified Persons

QA / QC

The Company has implemented a quality assurance and quality control (QA/QC) program to ensure sampling and analysis of all exploration work is conducted in accordance with the CIM Exploration Best Practices Guidelines. The NQ diameter drill core is sawn in half with one-half of the core sample dispatched to either Eastern Analytical Ltd. (Eastern) preparation facility in Springdale, Newfoundland and Labrador or the ALS Canada Ltd. (ALS) prep lab in Moncton, NB and then the pulp is sent to North Vancouver, BC for fire assay. The other half of the core is retained for future assay verification and/or metallurgical testing. Analysis for gold was completed by fire assay (30 g) with an AA finish. All assays in this press release are reported as fire assays only.

For samples analyzing greater than 0.5 g/t Au via 30 g fire assay, these samples will be re-analyzed at Eastern via total pulp metallics. For the total pulp metallics analysis, the entire sample is crushed to -10mesh and pulverized to 95% -150mesh. The total sample is then weighed and screened to 150mesh. The +150mesh fraction is fire assayed for Au, and a 30 g subsample of the -150mesh fraction analyzed via fire assay. A weighted average gold grade is calculated for the final reportable gold grade. Total pulp metallics assays for drill holes sited within this press release may be updated in a future news release. Check assays are conducted at Eastern for assay samples received from ALS and check assays are conducted at ALS for assays received from Eastern following the completion of a program.

Other QA/QC procedures include the regular insertion of blanks and CDN Resource Laboratories certified reference standards. The laboratory also has its own QA/QC protocols running standards and blanks with duplicate samples in each batch stream for all analysis.

Paul McNeill, P.Geo., VP Exploration of NexGold, is considered a “Qualified Person” for the purposes of National Instrument 43-101 Standards of Disclosure for Mineral Projects (“NI 43-101”) and has reviewed and approved the scientific and technical disclosure contained in this news release on behalf of NexGold.

About NexGold Mining Corp.

NexGold Mining Corp. is a gold-focused company with assets in Canada and Alaska. NexGold’s Goliath Gold Complex (which includes the Goliath, Goldlund and Miller deposits) is located in Northwestern Ontario and its Goldboro Gold Project is located in Nova Scotia. NexGold also owns several other projects throughout Canada, including the Weebigee-Sandy Lake Gold Project JV, and grassroots gold exploration property Gold Rock. In addition, NexGold holds a 100% interest in the high-grade Niblack copper-gold-zinc-silver VMS project, located adjacent to tidewater in southeast Alaska. NexGold is committed to inclusive, informed and meaningful dialogue with regional communities and Indigenous Nations throughout the life of all our Projects and on all aspects, including creating sustainable economic opportunities, providing safe workplaces, enhancing of social value, and promoting community wellbeing.