Appia Completes SPARTAN MT Survey at its Otherside Uranium Property

Toronto, Ontario--(Newsfile Corp. - April 1, 2026) - Appia Rare Earths & Uranium Corp. (CSE:API) (OTCQB:APAAF) (FSE: A0I0) (MUN: A0I0) (BER: A0I0) (the "Company" or "Appia") is pleased to announce the completion of its Q1 2026 SPARTAN Magnetotelluric ("MT") survey on the Company's 100 percent owned Otherside Uranium Property (the "Property") in Saskatchewan's Athabasca Basin.

The 10,441.88-hectare Otherside Uranium Property is located approximately 28 km south of Fond du Lac, Saskatchewan. Appia has identified an approximately 49 km-long, faulted and sheared electromagnetic ("EM") conductor trend that is considered prospective for Athabasca-style uranium mineralization.

Preliminary Results Potentially Indicate Multiple Uranium Structural Settings
Preliminary field observations and early review of the MT dataset are encouraging, highlighting multiple structural geochemical traps along the conductor trend that may be favourable for uranium mineralization. Importantly, the Otherside Uranium Property continues to exhibit electromagnetic signatures and structural features that are comparable to those associated with NexGen Energy's "Arrow" deposit (see Appia's Otherside Presentation) and other well known uranium deposits in the Athabasca Basin.

Appia is currently awaiting Quantec's final processing and interpretation deliverables to provide a more complete picture of the subsurface architecture and to further refine priority drill targets for Appia's planned 2026 to 2027 drill program.

Survey Objective: Advance Drill Ready Targeting
The MT survey was designed to refine and confirm drill ready targets along the extensive conductor trend by mapping subsurface resistivity and identifying key faults and shear zones, conductive zones, and resistivity contrasts that may reflect structural pathways and alteration associated with uranium deposition. The results will be integrated into a 3D geophysical-geological model with Appia's 2024 airborne gravity and magnetic survey data, along with historical datasets, to strengthen target confidence and support final drill planning/targeting.

Tom Drivas, President of Appia, commented:

"The completion of this MT survey is an important milestone for our Otherside Uranium Property. Early indications are very encouraging, with geophysical signatures comparable to NexGen's "Arrow" and other Athabasca Basin deposits. We look forward to final results to refine drill targets for 2026 to 2027."

Figure 1 - Magnetotelluric (MT) Survey Lines - Appia's Otherside Uranium Property

To view an enhanced version of this graphic, please visit:
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The technical content in this news release was reviewed and approved by Dr. Irvine R. Annesley, P.Geo., Senior Exploration Consultant to Appia and a Qualified Person as defined by National Instrument 43-101.

About Appia Rare Earths & Uranium Corp.

Appia is a publicly traded Canadian company in the rare earth element and uranium sectors. The Company holds a 25% interest in the Ultra Hard Rock and Ultra IAC Projects, which total 42,932.24 ha. in size and are located within the state of Goiás in Brazil. Ultra is obligated to acquire Appia's 25% interest in the Ultra Hard Rock and Ultra IAC Projects in exchange for a 25% equity interest in Ultra once a prefeasibility study has been prepared in respect of the Ultra IAC project and a mineral resource estimate has been prepared in respect of the Ultra Hard Rock project (see November 3, 2025 Press Release here).

The Company is also focusing on delineating high-grade critical rare earth elements and gallium on the Alces Lake property and exploring for high-grade uranium in the prolific Athabasca Basin on its Otherside, Loranger, North Wollaston, and Eastside properties. The Company holds the surface rights to exploration for 94,982.39 hectares (234,706.59 acres) in Saskatchewan. The Company also has a 100% interest in 13,008 hectares (32,143 acres), with rare earth elements and uranium deposits over five mineralized zones in the Elliot Lake Camp, Ontario.

Appia has 194.9 million common shares outstanding, 206.6 million shares fully diluted.

Cautionary note regarding forward-looking statements: This News Release contains forward-looking statements which are typically preceded by, followed by or including the words "believes", "expects", "anticipates", "estimates", "intends", "plans" or similar expressions. Forward-looking statements are not a guarantee of future performance as they involve risks, uncertainties and assumptions. We do not intend and do not assume any obligation to update these forward-looking statements and shareholders are cautioned not to put undue reliance on such statements.

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

For more information, visit www.appiareu.com

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