Vancouver, British Columbia--(Newsfile Corp. - September 2, 2026) - Kingman Minerals Ltd. (TSXV: KGS) (OTCQB: KGSSF) (FSE: 47A) (the "Company" or "Kingman") is pleased to announce the results of preliminary metallurgical test work completed by Sepro Laboratories, a division of Sepro Mineral Systems Corp. ("Sepro"), on mineralized material from the Company's Rosebud Gold Property in Arizona.

The results demonstrate a highly favourable metallurgical response, including 82.3% Gravity Recoverable Gold ("GRG"), a gravity concentrate grading 379.97 g/t gold ("Au"), and a preliminary 93.5% overall gold recovery from a combined gravity and rougher flotation flowsheet.

The results provide important new information regarding the nature and potential processing characteristics of the gold mineralization at Rosebud and support the Company's plans to advance the Property through additional geological, metallurgical and technical work.

"The Rosebud metallurgical program was designed to evaluate the gravity response of the mineralization and the flotation response of the resulting gravity tailings. The testing demonstrated a strong gravity response, with 82.3% of the gold reporting to the gravity concentrate under the GRG test conditions. The subsequent rougher flotation testing demonstrated that a significant portion of the remaining gold could also be recovered by flotation. These results indicate that the material tested has favourable characteristics for further investigation of a combined gravity and flotation flowsheet.

"The results are encouraging for a project at this stage because the combination of high gravity recoverability, rapid flotation kinetics and strong overall preliminary recovery provides a solid basis for further metallurgical optimization and mineralogical investigation," stated Jalal Tajadod, Senior Mineral Processing Engineer, Sepro Mineral Systems.

Key Metallurgical Highlights

• 12.52 g/t Au head grade in the Master Composite tested by Sepro;
• 82.3% Gravity Recoverable Gold, demonstrating a strong response to gravity concentration;
• Gravity concentration produced a concentrate grading 379.97 g/t Au;
• Rougher flotation of the gravity tailings recovered an additional 61.9% of the gold;
• Combined gravity and rougher flotation testing achieved a preliminary 93.5% overall gold recovery;
• The combined gravity and rougher flotation concentrates graded approximately 53.4 g/t Au;
• The first rougher flotation stage recovered 36.9% of the gold into a concentrate grading 40.4 g/t Au, demonstrating rapid flotation kinetics;
• The Master Composite also contained 60.5 g/t silver ("Ag"), with combined gravity and flotation testing recovering approximately 63.1% of the contained silver; and
• Sepro has identified additional opportunities to optimize recovery through further flotation optimization, cleaner flotation, mineralogical investigation and potential leaching of flotation tailings.

The metallurgical work was conducted on 165.8 kilograms of mineralized rock collected from 24 individual samples, which were combined into three variability composites and subsequently blended to create a Master Composite for the principal test work.

"This is an incredibly significant step for Kingman; not simply due to the high gold grades returned from the material tested, but the combination of high-grade gold mineralization and an exceptionally strong gravity response. The identification of 82.3% Gravity Recoverable Gold, together with preliminary combined gravity and flotation recovery of 93.5%, provides us with a compelling technical foundation from which to evaluate the next phase. Meaningful silver credits are also very encouraging and serve to reinforce the value of continuing our work at Rosebud. These results justify a focused program designed to better define the continuity and scale of the mineralization, optimize the metallurgical flowsheet and evaluate the broader economic potential of the Property," stated Brad Peek, Qualified Person & Director.

High-Grade and Highly Variable Gold Mineralization

The Master Composite, on which the GRG testing was performed, was derived from 3 separate bulk samples having a combined weight of 165.8 kg that were collected underground at the Rosebud Mine. The 3 samples, labelled E1, E2 and E3, had quite variable Au content as shown in the table below. Sepro attributed the significant variation to the nugget effect, reflecting the heterogeneous distribution of discrete gold particles within the sampled material.

Strong Gravity Response

The GRG test is a key component of the program. The Master Composite returned 82.3% GRG at a final grind size of P80 75 microns. The laboratory reported a gravity concentrate grading 379.97 g/t Au. Sepro also noted that the high grades in the panned concentrates indicate the potential to produce a high-grade, potentially smeltable gold product following further downstream concentration.

The Company emphasizes that GRG is a metallurgical test result and should not be interpreted as an estimate of commercial plant recovery. Also, the grades of the underground samples or Master Composite sample should not be interpreted as the grade of the overall resource.

Strong Response to Flotation

Following gravity concentration, Sepro conducted a preliminary rougher flotation test on the gravity tailings. The test recovered an additional 61.9% of the gold and 55.2% of the silver into the flotation concentrate. The combined gravity and rougher flotation products contained approximately 93.5% of the gold in the tested material and produced a combined concentrate grading approximately 53.4 g/t Au.

The first flotation stage alone recovered approximately 36.9% of the gold into a concentrate grading 40.4 g/t Au, with Sepro reporting rapid flotation kinetics and more than 51% gold recovery within the first four minutes.

This variability is an important consideration for future sampling and resource-definition work. At the same time, the very high E3 result, combined with the strong GRG response, provides evidence that very high-grade and highly gravity-responsive gold mineralization occurs within the material sampled from Rosebud.

Technical Information and Qualified Person

The metallurgical test work was conducted by Sepro Laboratories, a division of Sepro Mineral Systems Corp., on behalf of the Company. The program included fire assays for gold, multi-element ICP-ES analysis, particle-size analysis and a standard three-stage GRG test using a Falcon L40 centrifugal concentrator, followed by scoping rougher flotation of the gravity tailings.

The technical information in this news release has been prepared in accordance with the Canadian regulatory requirements set out in National Instrument 43-101 and reviewed on behalf of the Company by, Qualified Person and Director: Bradley C. Peek, MSc. CPG for Kingman Minerals Ltd.

The full report by Sepro Mineral Systems may be viewed on the Company's website: https://kingmanminerals.com.

About the Company

Kingman Minerals Ltd. (TSXV: KGS) is a publicly traded exploration and development company focused on precious metals in North America. The Company's flagship project is the fully owned historic Rosebud Mine, located in the Music Mountains, Mohave County, Arizona. High-grade gold and silver veins were discovered in the area in the 1880's and were mined mainly in the late 20's and 30's. Underground development on the Rosebud property included a 400-foot shaft and approximately 2,500 feet of drifts, raises, and crosscuts. The company believes that to explore the full potential of the area, drilling and sampling along strike and depth extensions of existing and additional vein structures is essential.

Cautionary Language Regarding Metallurgical Test Work
The metallurgical results reported herein are preliminary in nature and are based on laboratory-scale testing of selected samples. The results are not necessarily representative of the metallurgical characteristics of the entire Rosebud Property or of mineralization that may ultimately be defined as a mineral resource. GRG is a metallurgical test parameter and is not equivalent to commercial plant recovery. The reported 93.5% recovery represents preliminary combined gravity and rougher flotation recovery under the laboratory test conditions and should not be interpreted as an estimate of future commercial recovery.

The presence of significant variability between the tested composites, including the reported nugget effect, means that additional sampling and metallurgical testing will be required to assess representativeness and variability across the Property.

Forward-Looking Statements
This news release contains forward-looking statements within the meaning of applicable Canadian securities legislation, including statements concerning the Company's plans and expectations regarding additional exploration, drilling, metallurgical testing, process optimization, potential economic evaluation, financing, and the potential for the Rosebud Property to create shareholder value. Forward-looking statements are necessarily based upon a number of assumptions, including assumptions regarding the continuity and characteristics of mineralization, the representativeness of samples, the results of future exploration and metallurgical work, the availability of financing, applicable regulatory approvals, and the Company's ability to execute its planned programs. Although the Company believes the expectations reflected in such statements are reasonable, there can be no assurance that they will prove to be correct. Actual results may differ materially from those anticipated due to known and unknown risks and uncertainties. Readers are cautioned not to place undue reliance on forward-looking statements, which speak only as of the date hereof. The Company undertakes no obligation to update forward-looking statements except as required by applicable securities laws.

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