Mr. Russell Starr reports

GREENRIDGE EXPLORATION IDENTIFIES URANIUM TARGETS FROM AIRBORNE ELECTROMAGNETIC SURVEY AT THE MCKENZIE LAKE URANIUM PROJECT IN NORTHERN SASKATCHEWAN

Greenridge Exploration Inc. has received the interpretation of results from a helicopter-borne time-domain electromagnetic (HTDEM) survey carried out on the McKenzie Lake uranium project. McKenzie Lake consists of three mineral claims comprised of a total area of approximately 5,766 hectares (14,242 acres) located near the eastern margin of the Athabasca basin approximately 55 kilometres southeast of the McArthur River uranium mine. McKenzie Lake is located in a region that has seen a renewed level of exploration for uranium following recent discoveries in the area.

Highlights of the survey

• Axiom Exploration Group Ltd., in partnership with New Resolution Geophysics, utilized its proprietary Xcite HTDEM system, which has proven its ability to detect conductive zones hundreds of metres deep.
• The 2025 survey consisted of 365 line kilometres at 200-metre-line spacing, providing the first deep-penetrating electromagnetic (EM) survey of the project area in the modern era of uranium exploration.
• The survey successfully mapped a major north-south fault zone bisecting the project, as well as discrete conductive zones along and peripheral to the identified structure.

Russell Starr, chief executive officer of Greenridge, stated: "The results we have obtained this year from the McKenzie Lake airborne survey are yet another example of finding new target areas from the use of modern exploration tools. Layering the new EM data with other recent prospecting and radiometric results will greatly assist our future exploration efforts at the project."

The 2025 magnetic and electromagnetic data from the survey have provided very high-resolution airborne data over the project. The magnetic data has defined, with a high degree of precision, geological domains and significant fault structures in the area which may be prospective for hosting uranium mineralization.

The early time EM response data shows a clear conductivity trend overlapping a magnetic low and a major regional fault, providing a better understanding of the structural architecture and prospective subsurface conductors on the project. The EM response of the two anomalous conductivity zones intersecting the north-south-trending fault suggests that the conductive zones may represent graphitic or sulfidic rock packages, characteristic of a prospective setting for uranium mineralization in the Athabasca basin region.

Greenridge's 2026 exploration goals at McKenzie Lake

Greenridge will integrate the results of the 2025 survey with the outcomes of the 2021 high-resolution magnetic and radiometric survey to assist the planning of surface exploration in 2026. prospecting at the project in 2021 discovered a large, angular uranium-bearing boulder with values up to 0.101 per cent U3O8 (triuranium octoxide) (please see Greenridge news release dated June 19, 2025). Discovery by Greenridge of additional radioactive boulders and other radioactive anomalies in surficial soils and sediments could lead to an up-ice source for uranium mineralization. Ground geophysical surveys are recommended by Convolutions Geoscience Inc. to better characterize the conductivity associated with the regional interpreted fault structure running through the project to help further delineate the boundaries of the anomalous zones for future drill targeting.

The company holds an active exploration permit for airborne and ground geophysics and surface prospecting and sampling, valid to March 31, 2027.

About McKenzie Lake

McKenzie Lake is located outside of the eastern margin of the Athabasca basin within the Wollaston domain basement rocks, which host prolific uranium mines such as Key Lake, McArthur River, Cigar Lake and Rabbit Lake, amongst others. Recent uranium discoveries of note have been made in the region, southwest of the McKenzie Lake claims. The first is a discovery by 92 Energy Ltd. at the Gemini project, now owned by Atha Energy Corp., where strongly anomalous basement-hosted uranium mineralization was first intersected in drill hole GEM-004 in 2021. The second discovery, also made in 2021 and located in close proximity to the Gemini project, is where Baseload Energy Corp. (now Geiger Energy Corp.) reported the intersection of a broad zone of anomalous radioactivity in drill holes, which led to the delineation of the Ackio zone in subsequent drilling programs.

Statement of qualified person

The scientific and technical information contained in this news release has been reviewed and approved by Sean Hillacre, PGeo, technical adviser and a geological consultant to the company, and a qualified person as defined in National Instrument 43-101 -- Standards of Disclosure for Mineral Projects. Mr. Hillacre has examined information regarding the current and historical exploration at the project, which includes a review of the historical sampling, analytical and procedures underlying the information and opinions contained herein.

Management cautions that historical results collected and reported by operators unrelated to Greenridge have not been verified nor confirmed by its qualified person; however, the historical results create a scientific basis for continuing work at the project. Management further cautions that historical results, discoveries and published resource estimates on adjacent or nearby mineral properties, or other properties located within the Athabasca basin, whether in stated current resource estimates or historical resource estimates, are not necessarily indicative of the results that may be achieved on the project.

About Greenridge Exploration Inc.

Greenridge Exploration is a mineral exploration company dedicated to creating shareholder value through the acquisition, exploration and development of critical mineral projects in Canada. The company owns or has interests in 21 projects and additional claims covering approximately 274,420 hectares with considerable exposure to potential uranium, lithium, nickel, copper and gold discoveries. The company is led by an experienced management team and board of directors with significant expertise in capital raising and advancing mining projects.

Greenridge has one of the largest uranium property portfolios in Canada consisting of 13 projects and additional prospective claims covering approximately 193,200 hectares. The company has opportunities to realize value in a further eight strategic metals projects which include lithium, nickel, gold and copper exploration properties totalling approximately 81,200 hectares. Project highlights include:

• The Black Lake property, located in the NE Athabasca basin, (40 per cent Greenridge, 50.43 per cent UEC, 8.57 per cent Orano Canada) saw a 2004 discovery hole (BL-18) return 0.69 per cent U3O8 over 4.4 metres.
• The Hook-Carter property (20 per cent Greenridge, 80 per cent Denison Mines Corp.) is strategically located in the SW margin of the Athabasca basin, sitting approximately 13 kilometres from NexGen Energy Ltd.'s Arrow deposit and approximately 20 km from Fission Uranium Corp.'s Triple R deposit.
• The Gibbons Creek property hosts high-grade uraniferous boulders located in 2013, with grades of up to 4.28 per cent U3O8, and the McKenzie Lake project saw a 2023 prospecting program return three samples which included 844 parts per million U total (0.101 per cent U3O8), 273 ppm U total and 259 ppm U total.
• The Nut Lake property located in the Thelon basin includes historical drilling which intersected up to nine feet of 0.69 per cent U3O8 including 4.90 per cent U3O8 over one feet from eight feet depth. In 2024, Greenridge's prospecting program located a float sample that returned 31.13 per cent U3O8, sourced from the Tundra showing.
• The Firebird nickel property has seen two drill programs (seven holes totalling 1,339 m), where hole FN20-002 intersected 23.8 m of 0.36 per cent Ni and 0.09 per cent Cu, including 10.6 m of 0.55 per cent Ni and 0.14 per cent Cu.
• The Electra nickel project 2022 drill program included results of 2,040 ppm Ni over one m and 1,260 ppm Ni over 3.5 m.

The company has strategic partnerships which includes properties being operated and advanced by Denison Mines Corp. and Uranium Energy Corp. The company's management team, board of directors and technical team brings significant expertise in capital raising and advancing mining projects, and is poised to attract new investors and raise future capital.

We seek Safe Harbor.