Ridgeline Minerals Intersects Up To 1.8 G/T Oxide Gold In Maiden Drill Program At The Atlas Project, Nevada

Vancouver, British Columbia--(Newsfile Corp. - August 8, 2025) - Ridgeline Minerals Corp. (TSXV: RDG) (OTCQB: RDGMF) (FSE: 0GC0) (" Ridgeline " or the " Company ") is pleased to provide assay results for the maiden two-hole drill program at the Company's Atlas project, Nevada (Figure 1 ). Atlas is an early-stage Carlin-Type oxide gold prospect and is 100%-owned by the Company with no underlying work commitments or royalties. Details on the drill program are highlighted below.

Mike Harp, Ridgeline's Vice President, Exploration commented, "We are pleased that our maiden drill program confirmed that our Atlas project exhibits both the scale and grade potential that's required to host a significant gold deposit. The first two drill holes at Atlas were completed in the northernmost section of a greater than four-kilometer gold trend. With a limited budget this year, our focus was testing the favourable Pennsylvanian to Permian age carbonate host rock section to confirm whether those host rocks showed evidence of a Carlin-Type gold system."

Mr. Harp continues, "Both holes returned thick intercepts of anomalous oxide gold and Carlin-Type alteration, with hole AT25-001 exhibiting a stronger gold vector to the south than AT25-002. Hole AT25-001 intersected 298 meters of continuous Carlin-Type alteration and mineralization with elevated pathfinder elements, anomalous gold, and up to 1.8 g/t gold in individual samples."

Mr. Harp concludes, "Mineralization at Atlas appears to be hosted within the same thick section of Pennsylvanian to Permian age host rocks that host Orla Mining's nearby Dark Star deposit. Our team interprets the first two holes as having intersected a low-grade gold and trace element halo that is typically associated with the outer margins of Carlin-Type gold deposits. We will continue to focus on land consolidation and additional field work throughout the remainder of the 2025 field season with the goal of a Phase II drill program in 2026 to follow up on these results."

Drill Program Highlights
The maiden program completed two core holes totaling 551 meters ("m") in the northern section of the Atlas land package. Drilling targeted favourable Pennsylvanian to Permian ("Penn-Perm") age debris-flow conglomerates, limestones, and siltstone host rocks along a roughly 1-kilometer ("km") trend of elevated gold-in-soils and rock chips grading up to 7.7 g/t Au (Figure 2 ).

AT25-001 drilled to the east and down-dip of gold bearing and partially eroded Penn-Perm host rocks and intersected a highlight intercept of:

• 0.2 m grading 1.80 grams per tonne ("g/t") gold ("Au") and 2.10 g/t silver ("Ag") within 8.5 m grading 0.20 g/t Au and 0.52 g/t Ag starting at a true vertical depth ("TVD") of 80 meters (Figure 3 & Picture 1 )
  • Additional results include multiple 1.0 to 5.0-meter intercepts throughout the hole ranging from 0.1 to 0.5 g/t Au and 0.1- to 5.0 g/t Ag starting at 30m TVD
• Drilling also intersected high-grade silver intercepts within clay altered fault zones that returned 1.5m grading 75.1 g/t Ag and 0.5m grading 52.5 g/t Ag (Figure 3 )
• The hole returned 297.9m grading 0.01 g/t Au, 0.41 g/t Ag and bottomed in anomalous Au mineralization

AT25-002 was collared approximately 700m north of AT25-001 and drilled to the west towards the same gold bearing and partially eroded Penn-Perm host rocks and intersected a highlight intercept of:

• 5.9m grading 0.20 g/t Au and 2.43 g/t Ag starting at 124m TVD and;
• 2.6m grading 0.25 g/t Au and 2.59 g/t Ag within 9.8m grading 0.15 g/t Au and 2.20 g/t Ag starting at 182 m TVD (Figure 2 ) and;
  • 1.4m grading 31.6 g/t Ag within a clay altered fault zone
• The top of AT25-001 intersected 106m of andesite (volcanic rocks) with the remainder of the hole drilling a partial section of Penn-Perm rocks that returned 147.6 m grading 0.01 g/t Au and 0.41 g/t Ag

Geologic Interpretation
Both holes intersected a thicker than anticipated section of Penn-Perm debris-flow conglomerate host rocks (150-300m), which exhibited weak to strong Carlin-Type alteration and oxide mineralization throughout with both holes bottoming in oxide mineralization.

• Anomalous gold-silver and Carlin-type trace element pathfinders were observed throughout both drillholes with the highest values (up to 1.8 g/t Au and 75.1 g/t Ag) associated with strongly altered and mineralized Penn-Perm carbonate host rocks
• Compared to AT25-001, hole AT25-002 exhibited similar zones of widespread silicification, decalcification, and oxidation. However, AT25-002 returned weaker Au values overall
• Results from these two holes indicate a potential vector to the south where the intersection of a northeast and northwest trending fault corridor coincides with a kilometer-scale gold in soils and rock chip anomaly

Figure 1 : Ridgeline's 200-kilometer2 exploration portfolio with Atlas located southwest of the Carlin Trend

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Figure 2 : Plan view map of the Atlas project with Ridgelines 2025 drillholes testing the northern Atlas block

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QA/QC Procedures
Samples are submitted to American Assay Laboratories (AAL) of Sparks, Nevada, which is a certified and accredited laboratory, independent of the Company. Independent check samples are sent to Paragon Geochemical Labs (PAL) of Sparks, Nevada. Samples are prepared using industry-standard prep methods and analysed using FA-PB30-ICP (Au; 30g fire assay) and ICP-5AM48 (48 element Suite; 0.5g 5-acid digestion/ICP-MS) methods at AAL and analysed using a photon assay (Au-Ag, 500g) at Paragon. AAL and Paragon also undertake their own internal coarse and pulp duplicate analysis to ensure proper sample preparation and equipment calibration. Ridgeline's QA/QC program includes regular insertion of CRM standards, duplicates, and blanks into the sample stream with a stringent review of all results completed by the Company's Qualified Person, Michael T. Harp, Vice President, Exploration.

The technical information contained in this news release has been prepared under the supervision of, and approved by Michael T. Harp, CPG, the Company's Vice President, Exploration. Mr. Harp is a "qualified person" as defined under National Instrument 43-101 - Standards of Disclosure for Mineral Project.

Figure 3 : X-Section A-A' showing 297.7m of continuous Carlin-Type alteration and mineralization, which returned highlights intercepts grading up to 1.8 g/t Au and 75.1 g/t Ag in individual samples

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Picture 1 : Core photos of AT25-001 showing variably altered, mineralized and pervasively oxidized debris flows and calcarenites of the Penn-Perm age Tomera Fm.

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Atlas Project
Atlas is located in Eureka County, Nevada, approximately 30 kilometers southwest of the town of Carlin, NV. The property exhibits classic Carlin-Type alteration and gold mineralization within outcropping Pennsylvanian to Permian age carbonate to siliciclastic host rocks. The primary target at Atlas is a bulk tonnage, oxide, Carlin-Type gold system, which is analogous to the nearby Dark Star gold deposit (part of the greater Railroad Mining District), which is currently owned by Orla Mining and advancing towards mine development. The 100% owned Project is comprised of a total of six square kilometers of highly prospective exploration ground that has never been drill tested and will benefit from the Ridgeline teams' systematic approach to discovery.

About Ridgeline Minerals Corp.
Ridgeline Minerals is a discovery focused precious and base metal explorer with a proven management team and a 200 km² exploration portfolio across seven projects in Nevada, USA. The Company is a hybrid explorer with a mix of 100%-owned exploration assets (Big Blue, Atlas, Bell Creek & Coyote) as well as two earn-in exploration agreements with Nevada Gold Mines at its Swift and Black Ridge projects and a third earn-in with South32 at its Selena project. More information about Ridgeline can be found at .

On behalf of the Board
"Chad Peters"
President & CEO

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