Vancouver, British Columbia--(Newsfile Corp. - December 2, 2025) - Glenstar Minerals Inc. (CSE: GSTR) (OTCQB: GSTRF) (FSE: VO20) ("Glenstar" or the "Company") announces that, further to the Company's news release of November 24^th regarding the granting of a permit by the Bureau of Land Management (the "BLM") to conduct the Phase 2 drill program at its Green Monster Project in southwestern Nevada, Glenstar has hired Alloy Drilling ("Alloy") of Elko, Nevada to conduct the drill program.

Alloy will utilize a track mounted reverse circulation drill to execute the Company's plan to drill nine (9) holes over four (4) locations on the property, which will be comprised of approximately 300 metres of strike length exploration. As currently planned, Glenstar will collar two (2) holes in the area of the primary drilling undertaken in the Phase 1 drill program; three (3) holes will focus on the area that is considered the "discovery" zone 150 metres to the west of the primary Phase 1 drill site, and two (2) holes each at two (2) sites will be situated further west along what is believed to be the mineralized east-west trending belt (see news release dated November 24, 2025).

Determination of each drill hole location in Phase 2 will be finalized in consultation with Hasbrouck Geophysics, Inc. ("Hasbrouck") upon the provision of their report relating to the Hybrid-Source Audio-Magnetotellurics Survey (the "HSAMT" or "Survey") that was conducted in mid November. The survey data was acquired at intervals of 50 metres along 13 lines over the greater target zone and the final report will detail the methodology, data acquisition, processing, modeling, and interpretation of the data (see news release dated October 29, 2025). The HSAMT is an electromagnetic geophysical method that combines naturally occurring electromagnetic field measurements with signals from a portable, controlled-source transmitter. This information will significantly aid in determining exact drill hole location, angle, and depth in order to maximize the potential for discovering additional high-grade mineralization.

Glenstar CEO, Dave Ryan, stated, "The Company is very much looking forward to getting the results of the HSAMT survey, which will be incorporated into our process of determining the final drill location plan. Alloy Drilling will mobilize their equipment to the property in mid December, and the program is expected to be completed before the Christmas holiday."

The Company also announces that it has extended the engagement with Altura Media Co Inc. (see news release dated August 13, 2025) for an additional CDN$250,000. The Company has agreed to continue the engagement of Altura Media Co. Inc. ("Altura") of Vancouver, British Columbia to provide certain marketing and investor awareness services in accordance with the policies of the Canadian Securities Exchange and applicable legislation. Under the terms of the continuation of the agreement, announced July 14, 2025, Altura will continue to deliver strategic advertising, public relations and investor communications services for the company. These services will be focused on enhancing Glenstar's visibility and engagement within domestic and foreign markets and include a full suite of services including digital advertising, content creation, and shareholder communications support. The agreement includes provisions for fee adjustments, early termination, and extensions of the engagement, should it be determined to be in the best interests of the Company. Altura (including its directors and officers) is an arm's length party to Glenstar, and to the best of the Company's knowledge, neither Altura nor any related parties hold or have the right to acquire securities of Glenstar Minerals Inc., and the Company will not issue any securities to Altura as compensation for its services. Altura has a business address at 1055 West Georgia Street Suite 1500, Vancouver BC V6E 4N7 and may be contacted via email at contact@alturamedia.co, or by telephone at 778-988-5503.

Project Background & Recent Exploration Work

The Green Monster Property is comprised of 35 federal lode claims covering ~700 acres located in Clark County, Nevada, on the west trending spur of the Spring Mountains and is approximately 40 miles southwest of Las Vegas. Until the recent drill program in May of 2025, no drilling was ever conducted on the property, but the Company's previous identification of robust nickel-copper with anomalous cobalt from sampling work done in 2022 indicated that several targets were ideal for shallow RC drilling (see news releases dated May 28, 2025, and July 16, 2025).

Glenstar acquired the Green Monster Property and conducted initial groundwork in 2022 that included reconnaissance geologic mapping, surface rock sampling, soil sampling, and a drone magnetic survey. Channel sampling across the exposed back of a raise off the main shaft returned 1.18 meters of 3.77% Cu (Copper), 3.06% Ni (Nickel), 0.21% Co (Cobalt) and 6.83% Zn (Zinc). These values are well in excess of select dump samples from historical underground workings and represent in-place, vein style mineralization. Sampling of oxide and sulfide bearing boulders directly downhill of the patented workings has confirmed the presence of very high zinc (>10%) and silver (>200ppm), as well as copper, uranium, and lead. (Sampling results provided above were previously published in the Green Monster Project NI 43-101 Technical Report dated June 20, 2023, Section 7.5).

About Glenstar Minerals Inc.

Glenstar is a mineral exploration company with a focus on polymetallic minerals. These elements are classified as critical minerals and are essential in the manufacturing of sophisticated electronics and other vital energy technologies. The Company's mission is to leverage its knowledge and connections to explore, acquire, and develop critical mineral and energy metal properties throughout the world.

Glenstar's shares trade on the Canadian Securities Exchange (CSE) under the symbol "GSTR", on the Frankfurt Stock Exchange under the symbol "VO20", and on the Over-the-Counter market (OTCQB) in the United States under the symbol "GSTRF".

Robert Marvin, P.Geo (ONT) is the qualified person as defined by National Instrument 43-101 and is the independent consulting geologist for Glenstar Minerals Inc., who has examined the Green Monster and Wildhorse properties on the ground numerous times since 2022 and 2024 respectively. All fieldwork relating to geologic observations and sampling as reported herein, has been directly overseen by Mr. Marvin who supervised the preparation of, and has reviewed and approved, the technical information in this release.

ON BEHALF OF THE BOARD

"David Ryan"
President & CEO

Neither Canadian Securities Exchange nor its Regulation Services Provider (as that term is defined in policies of the Canadian Securities Exchange) accepts responsibility for the adequacy or accuracy of this release.

Cautionary Statement Regarding Forward-Looking Information Certain information contained in this news release constitutes "forward-looking information" or "forward-looking statements" (collectively, "forward- looking information"). Without limiting the foregoing, such forward-looking information includes statements regarding the process and completion of any Offering, the use of proceeds of the Offering and any statements regarding the Company's business plans, expectations and objectives. In this news release, words such as "may", "would", "could", "will", "likely", "believe", "expect", anticipate", "intend", "plan", "estimate" and similar words and the negative form thereof are used to identify forward-looking information.

Forward-looking information should not be read as guarantees of future performance or results, and will not necessarily be accurate indications of whether, or the times at or by which, such future performance will be achieved. Mineral exploration is subject to risks and uncertainties and there is no assurance that any potential results or findings that may be suggested in this press release will ultimately happen. Forward-looking information is based on information available at the time and/or the Company management's good faith belief with respect to future events and is subject to known or unknown risks, uncertainties, assumptions and other unpredictable factors, many of which are beyond the Company's control. For additional information with respect to these and other factors and assumptions underlying the forward-looking information made in this news release, see the Company's most recent Management's Discussion and Analysis and financial statements and other documents filed by the Company with the Canadian securities commissions and the discussion of risk factors set out therein. Such documents are available at www.sedarplus.ca under the Company's profile and on the Company's website. The forward-looking information set forth herein reflects the Company's expectations as at the date of this news release and is subject to change after such date.

This release may contain certain forward‐looking statements with respect to the financial condition, results of operations and business of the Company and certain of the plans and objectives of the Company with respect to the same. By their nature, forward‐looking statements involve risk and uncertainty because they relate to events and depend on circumstances that will occur in the future and there are many factors that could cause actual results and developments to differ materially from those expressed or implied by these forward‐looking statements.

This press release shall not constitute an offer to sell or the solicitation of an offer to buy any securities, nor shall there be any sale of securities in any state in the United States in which such offer, solicitation or sale would be unlawful. The securities referred to herein have not been and will not be registered under the United States Securities Act of 1933, as amended, and may not be offered or sold in the United States absent registration or an applicable exemption from registration requirements. This release may contain statements within the meaning of safe harbour provisions as defined under securities laws and regulations. We seek safe harbour.

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