Mr. J. Patricio Varas reports

SAGE POTASH DELIVERS 3.3 METERS OF 52.5% KCL AT ITS SAGE PLAIN PROJECT IN UTAH

Sage Potash Corp. has provided potash assay results from the completion of drilling operations at the Peterson 1 site, located at the company's flagship Sage Plain potash project in southeastern Utah. Results from the Saskatchewan Research Council lab assays returned three high-grade potash sections grading better than 50.0 per cent KCl (potassium chloride) within the upper and lower cycle 18 potash beds. High-grade sections in the upper cycle 18 potash horizon include 10.8 feet (3.3 metres (m)) of 52.5 per cent KCl and 3.3 feet (1.0 m) of 52.0 per cent KCl within the 26.6-foot-thick (8.1 m) intersection of the upper cycle 18 potash bed grading 36.1 per cent KCl. A high-grade, 10.1-foot (3.1 m) section grading 53.4 per cent kcl in the lower cycle 18 potash bed occurs within a 16.4-foot-thick (5.0 m) intersection grading 36.4 per cent KCl, confirming the continuity and high-grade tenor of the deposit and making it one of the highest-grade deposits around the world.

Drill program highlights:

• Continuity of high-grade potash and significant bed thicknesses have been confirmed for both upper and lower cycle 18 potash beds.
• Outstanding, high-grade tenor confirmed within the upper and lower cycle 18 potash beds as summarized in table 1.
• Combined grade and thickness of 36.3 per cent over 43 feet (13.1 m) for the whole of cycle 18.
• The potash intervals and assay results confirm remarkable continuity between the recently completed Peterson 1 hole and the previous Johnson 1 hole, located 0.62 mile (1.0 kilometre (km)) to the south.
• Importantly, the company has now also confirmed high-grade potash mineralization in the lower bed of cycle 18.

"Completing the Peterson 1 drilling program and receiving these outstanding analytical results mark a significant, transformational development for the Sage Plain project," said Patricio Varas, chief executive officer of Sage Potash. "The continuity, thickness and high grades of the potash beds demonstrate a world-class deposit that can be advanced rapidly toward production."

Mr. Varas added: "Potash project resources commonly exceed the tonnage required to define reserves and a mine plan. As we advance the project, first with an updated resource estimate, followed by a PFS and further engineering studies, we expect the new resource to support a higher-capacity mine plan contemplating meaningful potash production in the United States. This scale should allow Sage to evaluate various mining methods and optimize a mine plan that leverages the very high-grade mineralization to target a high IRR and rapid payback, while pursuing a development larger than the 300,000 tonnes per year contemplated in the Sept. 8, 2025, PEA."

Mr. Varas further added, "The Sage Plain project is advancing as the United States designates potash a critical mineral and global attention to fertilizer-input security remains elevated."

Results from these analytical assays will now be used to update the project resources. An updated National Instrument 43-101 resource estimate is planned to be delivered in the next 45 days.

Peterson drilling program

As previously announced, the Peterson 1 stratigraphic exploration hole was successfully completed on Aug. 4, 2026, marking a key operational milestone for the project. During an initial on-site geological assessment of the recovered core, the company confirmed the presence of pure sylvite mineralization within the cycle 18 potash horizons.

The Peterson 1 hole was sited 0.62 mile (1.0 km) to the north-northeast of the previously drilled Johnson 1 hole to facilitate both a resource expansion and delineation of a portion of the resource that will fall into the measured and indicated categories in a new NI 43-101 resource estimate.

Core from the cycle 18 upper and lower zones was recovered and transported to the Saskatchewan Research Council (SRC) laboratories in Saskatoon, Sask., for geochemical analysis. Samples were collected and shipped under the supervision of qualified independent geological personnel for analysis using industry standard procedures. Quality assurance and quality control protocols included the insertion of blanks, standards and duplicate samples throughout the sampling program. Assays were completed along the entire length of recovered core. Eight, one-foot (30-centimetre) core sections were removed at the site for geo-mechanical testing. These core sections will be forwarded to the SRC laboratory for assays when geo-mechanical testing is completed. In the absence of assays, gamma ray results were used to determine the potash content for those eight samples.

The geochemical assay samples and resulting delineation of grade intercepts confirm attractive potash bed thicknesses and grades that demonstrate the high-grade tenor of the mineralization in this part of the Paradox basin, between the Johnson 1 and Peterson 1 holes. The continuous thicknesses and high grade now demonstrated by the historical wells and the Peterson well will allow for a significant increase in the resource estimate and will allow for an upgrade in the quality of the resource for the project.

The company has engaged RESPEC LLC to perform the NI 43-101 resource calculation based on the inclusion of the Peterson 1 drill hole information. RESPEC previously completed an NI 43-101 resource estimate on Sept. 8, 2025.

Summary of current results and comparison to previous drill hole

Peterson 1 assays returned 36.1 per cent KCl over 26.6 feet (8.1 m) in the upper bed of cycle 18 and 36.4 per cent KCl over 16.4 feet (5.0 m) in the lower bed of cycle 18.

Table 2 shows the overall thickness and grade encountered at the Peterson 1 hole compared with the Johnson 1 drill hole; the two holes show excellent continuity. The current drill program recovered an outstanding high-grade interval within the upper bed of cycle 18. At 7,094.5 feet (2162.4 m) of depth at the Peterson 1 drill site an interval measuring 13.8 feet (4.22 m) grading 45.5 per cent KCl was recovered within an intercept of 19.7 feet (5.99 m) in the cycle 18 upper bed with grades of 39.4 per cent KCl. This correlates to a continuation of the same high-grade interval at Johnson 1 which was 15.0 feet (4.58 m) of 53.5 per cent KCl.

The beginning of the upper bed of cycle 18 was encountered at 7,085.6 feet (2,159 m) at Peterson 1 and correlates well with the Johnson 1 hole, confirming the flat lying nature of the mineralization with a dip of approximately 0.8 degree. The upper bed was followed by a barren halite interval of 42 feet (12.8 m) before entering the lower bed, which also correlates well with the 41 feet (12.5 m) of barren halite between the upper and lower cycle 18 beds at the Johnson 1 hole site.

Assay results also indicate that the potash interval at the Peterson 1 well location is also very clean with traces of carnallite and less than 1 per cent insoluble materials, which compares positively with the purity of the deposit in this part of the Paradox basin as evidenced in the original Johnson 1 hole.

Drill results from the Peterson 1 and Johnson 1 sites, along with regional gamma ray results from historical drill data and previously obtained 2-D seismic data, indicate the cycle 18 potash mineralization is open in all directions.

Sage Plain project grade comparison with world deposits

The Sage Plain project contains one of the highest-grade potash resources in the world.

Qualified person

The scientific and technical information contained in this news release has been reviewed and approved by Greg Vogelsang, PGeo, PEng, a qualified person as defined by National Instrument 43-101, Standards of Disclosure for Mineral Projects. Mr. Vogelsang is vice-president, project development, for the company.

About Sage Potash Corp.

Sage Potash is dedicated to the development of its flagship Sage Plain potash project, located in the Paradox basin, Utah. With a large and high-grade resource base, the company is advancing toward its goal of establishing a secure and sustainable domestic potash production platform in the United States. Sage Potash is committed to food security, environmental stewardship, and creating value for shareholders and stakeholders alike.

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