Mr. David Greenway reports

VANGUARD MINING ANNOUNCES PROPOSED NAME CHANGE TO URANIUM ONE MINING CORP. AND STRATEGIC FOCUS ON URANIUM

Vanguard Mining Corp. has provided a corporate update highlighting its strategic transition toward uranium exploration and development, and, in connection with this repositioning, the company is proposing to change its name to Uranium One Mining Corp.

The name change is intended to reflect the company's expanded focus on its uranium portfolio, including the Yuty Prometeo project located in Paraguay, the Nuclean uranium project in the Athabasca basin in Saskatchewan, the Quark uranium property, also located in the Athabasca basin, as well as potential future acquisitions in the uranium sector.

David C. Greenway, president and chief executive officer of Vanguard Mining, commented: "The proposed name change to Uranium One Mining Corp. better reflects the company's strategic direction and our commitment to building a focused uranium portfolio aligned with global energy trends. Global electricity demand is projected to exceed 30 trillion kilowatt-hours annually by the early 2030s, driven in large part by the rapid expansion of AI-driven data centres, electrification of transportation and increasing energy demand across emerging markets. AI infrastructure alone is expected to require gigawatt-scale power capacity, placing unprecedented strain on existing energy systems. In this environment, nuclear energy is increasingly recognized as a critical solution for delivering reliable, carbon-free baseload power on scale. We believe uranium will play a central role in meeting these future energy needs, and our repositioning reflects our commitment to participating in this long-term structural shift while creating sustainable value for our shareholders."

Share consolidation

In conjunction with the proposed name change and strategic repositioning, the company intends to complete a consolidation of its issued and outstanding common shares on a 1:3.5 basis. The consolidation is expected to enhance the company's capital structure and better position it for future growth initiatives.

Further details regarding the effective date of the name change and share consolidation will be provided once finalized.

Registered holders of physical share certificates will receive a letter of transmittal by mail advising that the name change and consolidation has been effected and will contain instructions on how to exchange share certificates evidencing preconsolidated common shares for new share certificates representing the number of postconsolidated common shares to which they are entitled. No action is required for shares held by non-registered holders (shareholders who hold their shares through an intermediary) and outstanding direct registration system (DRS).

The company believes the name change and strategic repositioning will enhance its visibility within the uranium sector and better align with investor interest in nuclear energy and critical minerals.

Upon completion of the name change, the company's common shares will continue to trade under the existing symbol UUU and will be assigned a new Cusip number and ISIN (international securities identification number).

The Canadian Securities Exchange will publish a bulletin announcing the effective date of the name change in due course.

Uranium projects portfolio

Quark uranium project

The Quark uranium property consists of eight mineral claims totalling approximately 28,746 hectares (approximately 71,030 acres) located in the province of Saskatchewan, Canada, within the Athabasca basin region. The property is situated in a well-established uranium-producing district in Northern Saskatchewan that has historically accounted for a significant portion of global uranium production.

Nuclean uranium project

The Nuclean uranium project consists of seven exploration-stage mineral claims totalling approximately 23,424.90 hectares located in Northern Saskatchewan, Canada, within the Athabasca basin, widely recognized as one of the world's premier uranium districts.

Yuty Prometeo project

The Yuty Prometeo project consists of the San Jose and Uno concessions, together covering approximately 90,000 hectares within the prospective Parana basin in southeastern Paraguay. The project is located adjacent to Uranium Energy Corp.'s Yuty deposit. According to public disclosure by Uranium Energy, the Yuty deposit hosts a National Instrument 43-101-compliant mineral resource of approximately 8.96 million pounds of U3O8 (triuranium octoxide). The company has not independently verified this information.

The Yuty Prometeo project is located within a geological setting that is considered prospective for uranium mineralization based on regional geological characteristics and historical exploration data. Mineralization on adjacent or nearby properties is not necessarily indicative of mineralization on the company's properties.

Qualified person

The scientific and technical information contained in this news release has been reviewed and approved by Lawrence Segerstrom, PGeo, MSc, MBA, a consulting geologist who is a qualified person as such term is defined under NI 43-101, Standards of Disclosure for Mineral Projects. Mr. Segerstrom is not at arm's length to Vanguard and is therefore not independent for the purposes of NI 43-101.

About Vanguard Mining Corp.

Vanguard Mining is a Canadian mineral exploration company focused on the discovery and development of high-value strategic minerals. The company is currently advancing uranium exploration projects in the United States and Paraguay, with a focus on identifying and developing assets critical to the global energy transition. Vanguard is committed to responsible exploration and value creation through the acquisition and advancement of highly prospective uranium properties.

We seek Safe Harbor.