(via TheNewswire)

Vancouver, BC – April 23, 2026 – Vanguard Mining Corp. ("Vanguard" or the "Company") ( UUU: CSE | UUUFF: OTCID | SL51: Frankfurt ) is pleased to announce that, further to its news release issued on April 10, 2026 , it has successfully completed its acquisition of Quark Uranium Ltd. ( “Quark” ) (the “Transaction” ) pursuant to a share exchange agreement dated April 22, 2026 (the “Definitive Agreement” ) among the Company, Quark Uranium Ltd., and the shareholders of Quark (the “Shareholders” ).

Pursuant to the terms and conditions of the Definitive Agreement and as consideration for 100% of the issued and outstanding securities of Quark, the Company:

• the issuance of an aggregate of 8,000,000 common shares of the Company at a deemed price of $0.15 per share; and  

• aggregate cash payments of C$200,000 .  

The Transaction represents a total implied value of approximately C$1.4 million. All securities issued in connection with the Transaction are subject to a statutory hold period of four months and one day in accordance with applicable securities laws.

The Company and its directors, officers, and insiders are arm’s length parties to the shareholders, directors, and officers of Quark.  No finders’ fees were paid in connection with the Transaction.

David C. Greenway, President and CEO of Vanguard Mining Corp., commented, “The successful closing of the Quark acquisition marks an important milestone in the execution of Vanguard’s uranium growth strategy. The Quark land package significantly strengthens our footprint in the western Athabasca Basin, one of the world’s premier uranium districts. With global demand for nuclear energy continuing to accelerate, we are excited to advance exploration on this highly prospective property and deliver long-term value to our shareholders.”

About Quark Uranium Claims

The Quark Uranium property consists of eight (8) mineral claims totaling approximately 28,746 hectares (approximately 71,030 acres) located in the Province of Saskatchewan, Canada, within the Athabasca Basin region.

The property is situated within a well-established uranium-producing district in northern Saskatchewan that has historically accounted for a significant portion of global uranium production. All of Canada’s currently operating uranium mines and many of its known uranium deposits are located within the Western Wollaston Domain and the Wollaston–Mudjatik Transition Zone. The Quark Uranium property comprises a contiguous land position in this region and is in proximity to projects operated by established uranium exploration and mining companies, including Orano Canada and Fission Uranium Corp.

The properties are at an early stage of exploration and do not contain any known mineral resources or mineral reserves. While the Company considers the property prospective based on its regional geological setting, there can be no assurance that further exploration will result in the discovery of economically recoverable mineralization.

Mineralization on adjacent or nearby properties is not necessarily indicative of mineralization on the Quark Uranium property.

Qualified Person

The scientific and technical information contained in this news release has been reviewed and approved by Lawrence Segerstrom, P.Geo., M.Sc., MBA, a consulting geologist and a “Qualified Person” as defined under National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”). Mr. Segerstrom is not independent of the Company within the meaning of NI 43-101.

About Vanguard Mining Corp.

Vanguard Mining Corp. 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 pr ospective uranium properties.

All Stakeholders are encouraged to follow the Company on its social media profiles on LinkedIn , X.com , Facebook and Instagram and sign up for updates at Vanguardminingcorp.com

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

On Behalf of the Board of Directors

“David Greenway”

David Greenway, CEO

For further information, please contact:

Vanguard Mining Corp.
Brent Rusin
Phone: +1 672-533-0348
E-Mail:  brent@vanguardminingcorp.com
Website:  vanguardminingcorp.com

U.S. Securities Law Disclaimer

The securities issuable pursuant to the Transaction have not, nor will they be registered under the United States Securities Act of 1933, as amended, and may not be offered or sold within the United States or to, or for the account or benefit of, U.S. persons in the absence of U.S. registration or an applicable exemption from the U.S. registration requirements. This news release shall not constitute an offer to sell or the solicitation of an offer to buy nor shall there be any sale of the securities in the United States or in any other jurisdiction in which such offer, solicitation or sale would be unlawful.

Disclaimer for Forward-Looking Information

This news release contains certain forward-looking statements and forward-looking information (collectively, “Forward-Looking Statements”) within the meaning of applicable Canadian and U.S. securities laws. All statements, other than statements of historical fact, included herein are forward-looking statements, including, without limitation, statements regarding the anticipated benefits of the acquisition of Quark Uranium Ltd. (the “Transaction”), the Company’s plans with respect to the Quark mineral claims, and the Company’s broader business objectives, exploration plans, and strategic direction. Forward-Looking Statements are often identified by words such as “anticipate”, “believe”, “estimate”, “expect”, “target”, “plan”, “forecast”, “may”, “will”, “intend”, “schedule” and similar expressions.

Forward-Looking Statements are based on the current expectations, assumptions, estimates and opinions of management as of the date of this news release, and are subject to a number of known and unknown risks, uncertainties and other factors that may cause actual results, performance or achievements to differ materially from those expressed or implied by such Forward-Looking Statements. Such risks and uncertainties include, without limitation: risks relating to the integration and development of the Quark mineral claims; risks inherent in the mineral exploration industry, including the uncertainty of exploration results; risks related to title, ownership and condition of the mineral claims; fluctuations in commodity prices, including uranium prices; changes in applicable laws, regulations or government policies; and general economic, market and business conditions, as well as those risk factors discussed in the Company’s public disclosure documents filed on SEDAR+ at www.sedarplus.ca .

Although the Company believes that the assumptions underlying the Forward-Looking Statements are reasonable, undue reliance should not be placed on such statements, which speak only as of the date of this news release. The Forward-Looking Statements contained herein are expressly qualified in their entirety by this cautionary statement. The Company does not undertake any obligation to update or revise any Forward-Looking Statements, whether as a result of new information, future events or otherwise, except as required by applicable securities laws.

Readers are cautioned that the foregoing list of risks and uncertainties is not exhaustive. Additional information about these and other risks and uncertainties is available in the Company's public disclosure documents filed on SEDAR+ at www.sedarplus.ca .

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