REPEAT/ Rare Earths Americas Announces Select Surface Samples Up to 44.5% TREO at Shiloh; Drill Results Highlight Laterally Extensive Monazite-Bearing Sands System Potential

MANCHESTER, Ga.--(BUSINESS WIRE)--Rare Earths Americas, Inc. ("REA" or the "Company"), is pleased to announce the drilling results for Shiloh through the first quarter of 2026 (Figure 1). The exploration drilling program has continued on the subject properties comprising multiple drilling methods across several target areas. The recent drilling and surface sampling at the Shiloh Project have identified zones of monazite-bearing sands and localized high-grade rare earth element (“REE”) mineralization. These results support continued evaluation of the project’s exploration potential and provide guidance for ongoing and future drill programs.

In addition, the Company received assay results for all 13 of the rock chip surface samples taken across the Newbill and Pipeline properties at Shiloh (Table 1a/b), showing grades up to 44.5% total rare earths oxide (“TREO”). These results are another indicator showing the potential for a monazite-bearing sands system at Shiloh. Selected samples returned high TREO concentrations relative to commonly reported rare earths exploration results; however, these results are from selective samples and may not be representative of broader mineralization.

Laterally extensive monazite-bearing sands systems typically offer several advantages, including the ability to extract near-surface, free-dig material and utilize conventional mineral beneficiation processes; however, the applicability of these characteristics to the Shiloh Project has not yet been established and will require further technical evaluation. These characteristics may be favorable for future technical evaluation, subject to further study.

In 2026, REA plans to complete more than 20,000 meters (m) of drilling using sonic, direct push, and diamond methods to further define and expand the monazite sands potential at Shiloh. The 2026 exploration program will focus on establishing the continuity, scale, and grade distribution of REE mineralization across the district to support ongoing evaluation of the project and assess the potential for future mineral resource delineation.

Assay highlights from the drill program include:

Lazer Creek: Assays for the holes drilled through the first quarter of 2026 have been received. The initial results show that mineralization was encountered across multiple drilling locations, indicating lateral continuity that remains open to further evaluation (Figure 2).

Highlights include:

• 25-DPLC-015 with 10.84% TREO from 6.1-6.77m and 3.52% TREO from 7.35-8.63m deep
• 25-DPLC-013 with 1.88% TREO from 5.88-11.16m deep
• 25-DPLC-022 and 25-DPLC-023 with 2.15% and 1.35% TREO respectively, from surface to at least 11m deep

Additional drilling is required to determine the extent, geometry, and consistency of this mineralization. A drone-based radiometric survey of the Lazer Creek property also revealed additional targets along-strike.

Pig Trail: Assays for the holes drilled through the first quarter of 2026 have been received (Figure 3). The initial results show rare earth enrichment disseminated across the district.

Highlights Include (Appendix A):

• 26-DPPT-013 with 6.38% TREO from 6.89m to end of hole 7.01m
• 26-DPPTN-001 and 26-DPPTN-007 with 0.83% and 0.53% TREO respectively, from at least 1m deep to over 3m deep

Newbill & Pipeline: Assays for the holes drilled through the first quarter of 2026 have been received across both properties. Initial results indicate rare earth enrichment likewise distributed across the target area.

Additionally, high grade range TREO samples are reported across the properties, with grades above laboratory detection limits (Table 1a/b). A total of 13 rock chip surface samples taken across Newbill and Pipeline showed grades ranging from 17% to 44.5% TREO (Table 1a/b).

Highlights include (Appendix A):

• 26-DPPLE-021 and 26-DPPLE-043 with 1.96% and 1.89% TREO respectively, from at least 1.5m to 7.3m deep
• 25-DPPL-003 and 25-DPNB-123 with 1.74% and 0.79% TREO from surface to end of hole (1.52m and 1.98m respectively)
• 25-DPNB-128 with 1.02% TREO from 1.77m to 3.96m deep

The Shiloh Project is at an exploration stage. No mineral resource or mineral reserve has been estimated for the Shiloh Project, and there is no guarantee that further exploration will result in the delineation of a mineral resource. The results presented herein represent exploration data and are insufficient to define a mineral resource. Additional drilling, sampling, and technical studies are required to evaluate the potential for mineral resource estimation.

Next Steps: Rare Earths Americas will continue its comprehensive drilling campaign at the Shiloh District aimed at exploring both the scale and continuity of the monazite-hosted rare earth mineralization. The Company plans to complete more than 9,000m of diamond, sonic, and direct push drilling over the next three months, targeting both the expansion of known mineralized zones and step-out areas to test district-scale potential. For all of 2026, the Company expects to drill over 20,000m at Shiloh. This exploration work is designed to better constrain the geometry, thickness, and lateral continuity of monazite-bearing horizons, and is intended to generate data to support evaluation of a future initial mineral resource estimate. Concurrently, REA will undertake regional geophysical surveys and systematic soil sampling to refine its geological model and generate new high-priority drill targets across the broader district. These exploration programs are intended to identify additional zones of mineralization.

About Rare Earths Americas

Rare Earths Americas is an exploration stage company advancing a portfolio of critical minerals projects focused on high-grade heavy rare earth mineral assets in the United States and Brazil. REA’s portfolio includes three material projects, which the Company believes positions REA as a future potential cornerstone of non-Chinese rare earth supply, aligning with Western industrial and national security priorities. Rare earths elements are essential for advanced U.S. industries including robotics, electric vehicles, energy, defense, and consumer electronics.

Forward-Looking Statements & Technical Notes

This communication contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. When used in this communication, the words “plan,” “target,” “anticipate,” “believe,” “estimate,” “intend,” “potential,” “will” and “expect” and similar expressions are intended to identify such forward-looking statements. Any statements regarding potential future exploration success, the presence of a monazite-bearing sands system, that high-grade selective samples may be representative of broader mineralization, the possible delineation of a mineral resource, or any subsequent technical or economic studies are forward-looking in nature. There is no certainty that continued exploration will result in the definition of a mineral resource or that any future development scenario will be realized. These forward-looking statements are based on assumptions and expectations that may not be realized and are inherently subject to numerous risks and uncertainties, which could cause actual results to differ materially from these statements. These risks and uncertainties include, among others: the execution and timing of our planned exploration activities; our use and evaluation of historic data; our ability to achieve our strategic goals; the state of the economy and financial markets generally and the effect on our industry; and the market for our common stock. The foregoing list is not exhaustive. For additional information regarding factors that may cause actual results to differ materially from those indicated in our forward-looking statements, we refer you to the risk factors included in the Company’s Rule 424(b)(4) Prospectus filed on May 7, 2026, which are available at www.sec.gov. We caution investors not to place undue reliance on the forward-looking statements contained in this communication. These statements speak only as of the date of this communication, and we undertake no obligation to update or revise these statements, whether as a result of new information, future events or otherwise, except as may be required by law. We do not give any assurance that we will achieve our expectations.

Quality Assurance & Quality Control

Quality assurance/quality control measures consist of regular insertion of certified reference materials, duplicate samples, and blanks into the sample stream. Samples are submitted to the ALS Geochemistry sample preparation facility in Reno, Nevada, where they are logged, dried, crushed, split, and pulverized (methods CRU-21, CRU-31, LOG-22, LOG-24, SPL-22Y, PUL-31, SND-ALS, WEI-21). Rare earth element and multi-element analyses are performed at the ALS Geochemistry laboratory in North Vancouver, British Columbia, including determination of lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), and samarium (Sm) by the OGREE method, multi-element analysis by inductively coupled plasma mass spectrometry and optical emission spectroscopy (ICP-MS and ICP-AES; Methods ME-MS81, ME-MS81h, ME-ICP06, TOT-ICP06), and loss on ignition by gravimetry (OA-GRA05). ALS Minerals is an ISO/IEC 17025:2017 accredited laboratory for select methods and analytes. Assay results are reviewed, and discrepancies are investigated and resolved prior to incorporation of these data into the Company database.

Qualified Person Information

The scientific and technical information contained in this news release has been reviewed and approved by Paul Dockweiler, Senior Geologist with Geosyntec Consultants [CPG-11379/SME Registered Member], a Qualified Person (QP) as defined by US Securities and Exchange Commission SEC Regulation S‑K 1300. The scientific and technical information in this press release has been reviewed and approved by Paul Dockweiler, CPG, a “Qualified Person” as defined under Regulation S‑K 1300. Mr. Dockweiler’s review was limited to the geological and technical information presented, which remains subject to verification and refinement as additional data becomes available. The Qualified Person has performed verification procedures considered appropriate; aspects of the underlying data remain subject to ongoing analytical refinement and validation.

Lab	Sample_ID	Target	Easting	Northing	TREO % by MEMS81/h	TREO % by OGREE	La2O3 % / MEMS81h	La2O3 % / OGREE	Ce2O3 % / MEMS81h	Ce2O3 % / OGREE	Pr6O11 % / MEMS81h	Pr6O11 % / OGREE	Nd2O3 % / MEMS81h	Nd2O3 % / OGREE	Sm2O3 % / MEMS81h	Sm2O3 % / OGREE	Eu2O3 % / MEMS81h	Eu2O3 % / OGREE	Gd2O3 % / MEMS81h	Gd2O3 % / OGREE	Tb4O7 % / MEMS81h	Tb4O7 % / OGREE	Dy2O3 % / MEMS81h	Dy2O3 % / OGREE
ALS	D00427032	Pipeline	713771	3632119	19.71	39.8	5.86	8.81	5.86	18.98	0.6	2.27	5.83	7.84	0.58	0.92	0.01	0.01	0.45	0.45	0.03	0.04	0.11	0.11
ALS	D00427033	Pipeline	713765	3632118	19.43	32.31	5.86	6.98	5.86	15.58	0.6	1.87	5.83	6.4	0.58	0.74	0	0	0.36	0.36	0.02	0.03	0.08	0.08
ALS	D00427034	Pipeline	713764	3632114	19.71	38.89	5.86	8.39	5.86	18.62	0.6	2.24	5.83	7.74	0.58	0.9	0.01	0.01	0.45	0.45	0.04	0.04	0.11	0.11
ALS	D00427101	Pipeline	713763	3632111	19.51	37.31	5.86	8.27	5.86	17.86	0.6	2.09	5.83	7.46	0.58	0.86	0	0	0.38	0.38	0.03	0.03	0.09	0.09
ALS	D00427102	Pipeline	713762	3632093	17.35	23.67	4.98	4.98	5.86	11.44	0.6	1.35	4.77	4.77	0.58	0.58	0	0	0.27	0.27	0.02	0.02	0.07	0.06
ALS	D00427103	Pipeline	713769	3632106	19.73	44.5	5.86	9.8	5.86	21.2	0.6	2.49	5.83	8.97	0.58	1.04	0.01	0.01	0.47	0.47	0.04	0.04	0.11	0.11
ALS	D00427104	Pipeline	713763	3632108	19.73	43.91	5.86	9.65	5.86	20.85	0.6	2.49	5.83	8.86	0.58	1.06	0.01	0.01	0.48	0.48	0.04	0.04	0.11	0.11
ALS	D00427105	Pipeline	713770	3632100	19.65	42.23	5.86	9.22	5.86	20.26	0.6	2.38	5.83	8.47	0.58	1.01	0.01	0.01	0.45	0.45	0.04	0.04	0.11	0.1
Lab	Sample_ID	Target	Easting	Northing	TREO % by MEMS81/h	TREO % by OGREE	Ho2O3 % / MEMS81h	Ho2O3 % / OGREE	Er2O3 % / MEMS81h	Er2O3 % / OGREE	Tm2O3 % / MEMS81h	Tm2O3 % / OGREE	Yb2O3 % / MEMS81h	Yb2O3 % / OGREE	Lu2O3 % / MEMS81h	Lu2O3 % / OGREE	Y2O3 % / MEMS81h	Y2O3 % / OGREE	Sc2O3 % / MEMS81h	Sc2O3 % / OGREE	ThO2 % / MEMS81h	ThO2 % / OGREE	U % / MEMS81h	U % / OGREE
ALS	D00427032	Pipeline	713771	3632119	19.71	39.8	0.01	0.01	0.02	0.02	0	0	0.01	0.01	0	0	0.34	0.33	0	--	0.57	0.57	0.07	0.07
ALS	D00427033	Pipeline	713765	3632118	19.43	32.31	0.01	0.01	0.01	0.01	0	0	0.01	0.01	0	0	0.21	0.22	0	--	0.57	0.57	0.05	0.05
ALS	D00427034	Pipeline	713764	3632114	19.71	38.89	0.01	0.01	0.02	0.02	0	0	0.01	0.01	0	0	0.33	0.33	0	--	0.57	0.57	0.07	0.07
ALS	D00427101	Pipeline	713763	3632111	19.51	37.31	0.01	0.01	0.02	0.02	0	0	0.01	0.01	0	0	0.24	0.23	0	--	0.57	0.57	0.06	0.06
ALS	D00427102	Pipeline	713762	3632093	17.35	23.67	0.01	0.01	0.01	0.01	0	0	0	0	0	0	0.18	0.16	0	--	0.57	0.57	0.04	0.05
ALS	D00427103	Pipeline	713769	3632106	19.73	44.5	0.01	0.01	0.02	0.02	0	0	0.01	0.01	0	0	0.33	0.32	0	--	0.57	0.57	0.07	0.08
ALS	D00427104	Pipeline	713763	3632108	19.73	43.91	0.01	0.01	0.02	0.02	0	0	0.01	0.01	0	0	0.32	0.31	0	--	0.57	0.57	0.08	0.08
ALS	D00427105	Pipeline	713770	3632100	19.65	42.23	0.01	0.01	0.02	0.02	0	0	0.01	0.01	0	0	0.27	0.27	0	--	0.57	0.57	0.07	0.08

Table 1a – Rare earth element, thorium & uranium assay results of rock chip surface samples taken from within the project area.

Notes: 1) For analytes not exceeding the upper detection limits of ME-MS81h, results from the certified method are reported. For analytes exceeding those limits, OGREE results were used to provide quantitative values. TREO values for samples exceeding detection limits should be considered approximate and subject to further confirmation; 2) Reported TREO values are preliminary and may be subject to minor refinement as additional mineralogical and analytical work is completed.

Lab	Sample_ID	Target	Easting	Northing	TREO %	La2O3 %	Ce2O3 %	Pr6O11 %	Nd2O3 %	Sm2O3 %	Eu2O3 %	Gd2O3 %	Tb4O7 %	Dy2O3 %	Ho2O3 %	Er2O3 %	Tm2O3 %	Yb2O3 %	Lu2O3 %	Y2O3 %	Sc2O3 %	ThO2 %	U %
SGS	B00098801	Newbill	721998	3631076	20.33	4.64	9.69	1.1	3.69	0.48	0	0.26	0.03	0.09	0.01	0.02	0	0.01	0	0.31	0	1.74	0.03
SGS	B00098802	Pipeline	713714	3632196	38.9	8.12	18.51	2.26	7.92	1.03	0.01	0.52	0.04	0.12	0.01	0.02	0	0.01	0	0.33	0	7.67	0.11
SGS	B00098803	Pipeline	713761	3632099	39.81	8.53	19.21	2.28	8.01	0.94	0.01	0.46	0.04	0.09	0.01	0.01	0	0.01	0	0.21	0	10.09	0.06
SGS	B00098804	Pipeline	713754	3632097	41.33	8.76	20.03	2.43	8.29	0.96	0.01	0.48	0.04	0.09	0.01	0.01	0	0	0	0.22	0	10.82	0.07
SGS	B00098805	Pipeline	713719	3632089	26.89	5.63	12.77	1.59	5.42	0.68	0.01	0.34	0.03	0.08	0.01	0.02	0	0.02	0	0.29	0	6.51	0.05

Table 1b - Rare earth element, thorium & uranium assay results of rock chip surface samples taken from within the project area

Certain rock chip surface samples returned TREO values exceeding the upper detection limits of standard, commercial laboratory methods, demonstrating high concentrations of rare earth element (REE) mineralization that surpass the capacity of conventional analytical techniques. Assay results are reported as received, including both quantified values within certified detection ranges and those over the upper detection limit, to transparently reflect the full intensity and grade range of mineralization observed on the property. The Company notes that these over detection limit values represent REE concentrations that exceed the quantifiable limits of the methods employed rather than precise grade determinations; however, they are considered indicative of high-grade REE mineralization. Additional analytical work is planned, and the Company is actively engaging accredited laboratories to implement advanced analytical techniques, including extended detection methods and re-assay protocols, to accurately quantify these high-value samples and support ongoing evaluation.

ALS assay results are reported at the analytical limit of ME-MS81h (>20.00% TREO), which is ISO/IEC 17025:2017 certified, alongside the overlimit assays from the OGREE method which is not ISO/IEC 17025:2017 certified. Thorium values are reported at detection limit when concentrations exceeded the upper limit of detection for ME-MS81h. SGS results used either GC_IMS93A50V or GC_XRF76V which are ISO/IEC 17025:2017 certified, except for Yttrium which used GC_ICP93A50V which is not ISO/IEC 17025:2017 certified.

The reported TREO is calculated by converting each of the 15 rare earth elements (the lanthanides plus yttrium) from the laboratory-reported elemental percentage to the corresponding stoichiometric oxide and summing them. Reported TREO is the sum of the following oxides: La₂O₃, Ce₂O₃, Pr₆O₁₁, Nd₂O₃, Sm₂O₃, Eu₂O₃, Gd₂O₃, Tb₄O₇, Dy₂O₃, Ho₂O₃, Er₂O₃, Tm₂O₃, Yb₂O₃, Lu2O3 and Y2O3. For select analytes that exceeded the upper detection limits of methods ME-MS81/h, results from method OGREE were used in the calculation of TREO.

Please refer to this Business Wire posting for Appendix A Drilling Results data: https://www.businesswire.com/news/home/20260615983715/en/