American Tungsten Initiates 35,000 ft Surface and Underground Drilling Program at Ima Mine

Vancouver, British Columbia--(Newsfile Corp. - May 26, 2026) - American Tungsten Corp. (CSE: TUNG) (OTCQB: TUNGF) (FSE: RK90) ( "American Tungsten" or the "Company" ) announced a significant expansion of exploration activities at the Ima Mine property in Lemhi County Idaho. The company now has two surface drill rigs on site, in addition to two underground drill rigs. 35,000 feet of drilling is currently planned on the property including 33 underground holes and 20 surface holes. In addition, a new crosscut is being developed on the D level to establish underground drill stations to extend previously identified mineralization.

"While advancing our initial tailings-focused program, we are now accelerating into the next phase of drilling, positioning the Company for a steady stream of results across multiple work programs," stated Ali Haji, CEO of American Tungsten Corp. "With four rigs currently operating across surface and underground, this expanded campaign is designed to extend known mineralization and test high-priority targets adjacent to historic workings. The scale and pace of this program underscore our confidence in the Ima Mine and our focus on systematically unlocking its full potential through a disciplined, multi-phase exploration strategy." Figure: Longyear 44 drill rig at Ima Minesite To view an enhanced version of this graphic, please visit: https://images.newsfilecorp.com/files/11701/298781_aad94781e4ee396f_001full.jpg The expanded drilling program has multiple objectives: Expand limits of mineralization in the No. 5-7 vein system above the D-Level from a newly developed footwall crosscut; Establish additional along-strike continuity of the D-level vein system to the south via surface drilling, following up on previously announced sampling of surficial vein exposures; Confirm and expand mineralization in historical drilling and sampling from the second zero-level drill station targeting tungsten and molybdenum mineralization occurring at the upper intrusive contact; Assess continuity of mineralization in the western vein system from surface and underground holes, as initially intersected in AT26-16 and historical 2008 drillholes; and Define lateral extents of the main Ima vein system below the lower levels of the mine via surface drilling, as successfully intersected in initial zero level drillholes. To view an enhanced version of this graphic, please visit: https://images.newsfilecorp.com/files/11701/298781_aad94781e4ee396f_002full.jpg Rockhead Consulting LLC has been contracted to provide additional drilling services and has mobilized two track mounted surface core rigs to site.

One is currently operating and the second will start drilling by end of May. To date, Rockhead Consulting has completed 38 drillholes totaling over 16,500 feet and driven over 660 feet of drift at the Ima Mine. About the IMA Mine The IMA Mine is a past producing underground tungsten mine situated on 22 patented claims located in East Central Idaho.

Between 1945 and 1957, the property produced approximately 199,449 MTUs of WO 3 and was subsequently explored for molybdenum and tungsten by various operators between 1960-2010 (National Instrument 43 101 Technical Report on the Ima Mine, Patterson, Idaho, USA, p.29; LeBlanc, B., P.Eng. (2025) A-Z Mining Professionals. Dated June 6, 2025 on SEDAR+ for American Tungsten Corp.) . American Tungsten Corp is currently conducting an exploration drill program and assessing potential for re-start of underground tungsten mining operations at the IMA Mine.

Qualified Person Technical information in this news release has been prepared in accordance with Canadian regulatory requirements set out in National Instrument 43-101 — Standards of Disclosure for Mineral Projects ("NI-43-101"). Austin Zinsser, P.G., SME-RM, Vice President, Exploration for the Company, and a Qualified Person as defined by NI-43-101, has reviewed and approved the scientific and technical information in this news release. About American Tungsten Corp. American Tungsten Corp. is a Canadian-based exploration and development company focused on advancing the Ima Mine Project, a high-quality, private-patented, past-producing underground tungsten mine located in Idaho, USA.

The Company's strategy is centered on advancing the Ima Mine back into commercial production through a clearly defined, phased development approach. Phase I involves the evaluation and potential processing of existing surface tailings, providing a lower-capital pathway to near-term production. Phase II is focused on the rehabilitation and restart of the historic underground mine, leveraging the site's extensive existing infrastructure and historical production profile.

With tungsten recognized as a critical metal for defense, industrial manufacturing, and advanced technologies, American Tungsten is focused on re-establishing domestic tungsten production and supporting North American supply chain security. www.americantungstencorp.com For further information, please contact: Ali Haji, Chief Executive Officer ahaji@americantungstencorp.com +1 647 871 4571 Joanna Longo, Investor Relations ir@americantungstencorp.com Social media links: LinkedIn: https://www.linkedin.com/company/americantungstencorp/ X: https://x.com/amtungsten Facebook: https://www.facebook.com/americantungstencorp/ Instagram: https://www.instagram.com/americantungstencorp/ YouTube:  https://www.youtube.com/@americantungstencorp The Canadian Securities Exchange does not accept responsibility for the adequacy or accuracy of this release and has neither approved nor disapproved the contents of this press release. This news release includes "forward-looking information" that is subject to a number of assumptions, risks and uncertainties, many of which are beyond the control of the Company. Forward-looking statements may include but are not limited to, statements relating to anticipated results of future drilling, recommencement of mining or production, pending analyses, future work plans and all the risks and uncertainties normally incident to such events.

Investors are cautioned that any such statements are not guarantees of future events and that actual events or developments may differ materially from those projected in the forward-looking statements. Such forward-looking statements represent management's best judgment based on information currently available. No securities regulatory authority has either approved or disapproved of the contents of this news release.

The Company undertake no obligation to update publicly or otherwise revise any forward-looking statements, except as may be required by law. Statements concerning historical mineral resources, historical reserves, production, and exploration results on the property have been obtained through both public and private sources, and are believed to be substantially factual and relevant in that they demonstrate the tenor of exploration targets on the property. Historical resource estimates and reserves pre-date the implementation of NI 43-101 and do not use categories stipulated by CIM.

Prior operators assigned confidence categories which differ from those stipulated by CIM, as they may not have demonstrated economic viability. The estimates should not be relied upon until they have been verified. Neither American Tungsten Corp., or its Qualified Person, has done sufficient work to classify the historical estimates as current mineral resources or reserves or to verify historical information regarding past production, sampling or drilling.

American Tungsten Corp. is not treating the historical estimates as current mineral resources or mineral reserves. Exploration Targets discussed are conceptual in nature; it is uncertain whether a mineral resource will be delineated based on potential exploration. To view the source version of this press release, please visit https://www.newsfilecorp.com/release/298781 Source: American Tungsten Corp.