Vancouver, British Columbia--(Newsfile Corp. - July 16, 2026) - Noble Plains Uranium Corp. (TSXV: NOBL) (OTCQB: NBLXF) (FSE: INE0) ("Noble Plains" or the "Company") a U.S.-focused uranium exploration and development company, is pleased to announce it has initiated a geophysical program at its flagship Duck Creek property to detect buried shallow (Wasatch Fm.) and deeper (Fort Union Fm.) uranium mineralization. Duck Creek hosts a NI 43-101 compliant resource of 5.32 million Indicated and 1.04 million Inferred pounds of U₃O₈ in the Wasatch Formation.

"Our maiden resource at Duck Creek was built from roughly 2.5 miles of a mineralized trend that runs approximately 5.25 miles across our land package," said Drew Zimmerman, CEO of Noble Plains Uranium. "That leaves close to 2.75 miles of that same trend, plus the deeper Fort Union Formation beneath it, still largely untested. These geophysical surveys will help us identify mineralized roll-front noses for sharper drill targeting across the project, part of a systematic strategy to continue building out the pounds at Duck Creek."

With the maiden resource in hand, the Company is turning to advanced geophysical tools to systematically expand the resource, targeting both the untested extensions of the Wasatch trend along strike and the deeper, largely unexplored deeper Fort Union Formation. The program, conducted in partnership with the University of Wyoming Near-Surface Geophysics Instrument Center (UWNSG), involves shooting both a 2D Vibroseis as well as Standard Truck mounted Impact reflection seismic (REFL) profile line and a 2D High Power (10KW) DC Resistivity and Full Waveform decay Induced Polarization (FWD_IP) across different portions of the property to help distinguish areas of potentially mineralized sands. If successful, the instantaneous attributes of the REFL data modelling will identify specific targets and structures in the Fort Union and reduce the number of exploratory holes needed to identify mineralization. Similarly, the FWD_IP study is being conducted across the redox front in the Wasatch Formation to help identify additional mineralization that could be drill-tested to expand the resource. Both surveys extend beyond the Company's completed drilling areas to cover portions of the broader mineralized trend along strike, helping prioritize where future drill programs should be focused.

Dr. Carr, Director of UWNSG, stated, "In traditional uranium exploration and characterization, radiometric surveys followed by drilling and borehole gamma logging are the standard approaches. Those methods are reliable, but they only tell you what is happening directly at the drill hole. Seismic reflection lets us image the geometry of the sand packages between holes, which is one of the more effective ways to help distinguish sands likely to host mineralization within the Fort Union. Pairing that with induced polarization across the redox front helps trace the boundary between oxidized and reduced conditions, the geochemical setting where roll-front uranium deposits tend to form, over a much larger area than drilling alone could economically cover. Together, these datasets give the Company a more complete subsurface picture to guide both near-term drill targeting and, longer term, extraction planning."

Figure 1 - Duck Creek Project Map

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About Noble Plains Uranium

Noble Plains Uranium Corp. is a U.S.-focused uranium exploration and development company advancing a portfolio of high-potential projects amenable to In Situ Recovery (ISR) — the most capital-efficient and environmentally responsible method of uranium extraction. Our strategy targets historically drilled and underexplored assets in proven jurisdictions, with the objective of rapidly delineating NI 43-101-compliant resources and building a scalable inventory of domestic uranium.

More information is available at: www.nobleplains.com X: https://x.com/NOBLuranium

On Behalf of the Board of Directors,

"Drew Zimmerman", CEO & President

Bradley Parkes, P.Geo., VP Exploration of Noble Plains Uranium Corp., is the Qualified Person as defined in National Instrument 43-101, who has read and approved the technical content of this news release.

This news release includes certain forward-looking statements as well as management's objectives, strategies, beliefs and intentions. Forward-looking statements are frequently identified by such words as "may", "will", "plan", "expect", "anticipate", "estimate", "intend" and similar words referring to future events and results. Forward-looking statements include, but are not limited to, statements regarding the planned drill program, the timing of drilling and results, the potential to outline a uranium resource prepared in accordance with National Instrument 43-101 standards, the potential to confirm or expand mineralisation, and the expected advancement of the Company's exploration strategy. Forward-looking statements are based on the current opinions and expectations of management. All forward-looking information is inherently uncertain and subject to a variety of assumptions, risks and uncertainties, including but not limited to: the Company's ability to complete the drill program as planned, the interpretation of historic data, the accuracy of geological modelling, the results of drilling and downhole probing, operational risks and weather delays, regulatory approvals, availability of equipment and personnel, the speculative nature of mineral exploration and development, and fluctuating commodity prices, as described in more detail in our recent securities filings available at www.sedarplus.ca. Actual events or results may differ materially from those projected in the forward-looking statements and we caution against placing undue reliance thereon. We assume no obligation to revise or update these forward-looking statements except as required by applicable law.

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