Jaguar Uranium Reports Final Copper Assay Results Including up to 8.54% Copper, Potential 4-km Trend Identified from Huemul Uranium-Copper-Vanadium Project

Q: How significant is the potential 4-km copper trend reported by Jaguar Uranium at Huemul?

Jaguar Uranium identified a potential greater than 4 km corridor of copper-bearing occurrences across Uryco-Rosa, Black Zone and Vega Larga. According to Jaguar, mapped strike lengths of 2,200 m, 1,300 m and 2,300 m outline a district-scale exploration target, pending drilling and further work.

Q: What are the highest assay grades reported from Jaguar Uranium’s Huemul project in 2026?

Jaguar Uranium’s 2026 Huemul sampling returned up to 8.54% copper , uranium values up to 2.27% U (with one sample >25,000 ppm pending), 708 g/t silver and 1.27% vanadium . According to Jaguar, these are selective samples from visible mineralization and may be biased high.

Q: What are Jaguar Uranium’s next steps at the Huemul uranium-copper-vanadium project after these assay results?

Jaguar Uranium plans a maiden drill campaign to test Huemul targets at depth following surface sampling. According to Jaguar, further systematic exploration will focus on the Uryco-Rosa, Black Zone, Vega Larga corridor and other targets to better define mineralization continuity and potential scale.

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Jaguar Uranium (NYSE-AM: JAGU) reported final copper assay results from its initial rock sampling program at the Huemul uranium-copper-vanadium project in Malargüe, Mendoza, Argentina. Selective surface samples returned copper grades up to 8.54% Cu, uranium up to 2.27% U (22,700 ppm, with one sample >25,000 ppm pending), silver up to 708 g/t Ag, and vanadium up to 1.27% V.

Sampling along the Uryco/Rosa and Black zone trends indicates a potential 4 km corridor of copper mineralization exposed at surface, with mapped strike lengths of approximately 2,200 m (Uryco-Rosa), 1,300 m (Black Zone) and 2,300 m (Vega Larga). Jaguar is planning a maiden drill campaign to test these targets. According to the company, QA/QC checks using blanks and duplicates were satisfactory, though sampling is selective and does not establish mineral resources or reserves, and a qualified person has not yet conducted a current site visit.

Positive

High-grade surface assays up to 8.54% Cu, 2.27% U and 708 g/t Ag
Potential >4 km mineralized corridor across Uryco-Rosa, Black Zone and Vega Larga
QA/QC program with 6 blanks and 6 duplicates deemed satisfactory by the qualified person
Maiden drill campaign planned to test Huemul uranium-copper-vanadium targets at depth

Negative

Sampling is selective and potentially biased, not representative of grade continuity or tonnage
No current mineral resources or reserves established under NI 43-101 or Subpart 1300
Over-limit uranium assay pending for sample reported as >25,000 ppm U
Potential sample swap identified, requiring closer attention in future work phases
Qualified person has not completed a current site visit to independently verify sampling and procedures
Historical production and grade data are unverified and not treated as current resources

News Explained

Although Jaguar Uranium’s qualified person calls the QA/QC results satisfactory, two duplicate samples did not compare well; reanalysis confirmed the originals but indicated a possible sample swap requiring closer attention in later work.

Market Context

21,000 shares were sold in recent insider transactions, and insider sentiment was Net Selling. That ...

Analysis

21,000 shares were sold in recent insider transactions, and insider sentiment was Net Selling. That context adds a governance risk lens to the exploration announcement; selective assays and pending reanalysis remain important items to watch.

Key Figures

Copper assay: up to 8.54% Uranium assay: up to 2.27% Silver assay: up to 708 g/t +5 more

8 metrics

Copper assay up to 8.54% Huemul surface sampling

Uranium assay up to 2.27% Huemul surface sampling

Silver assay up to 708 g/t Huemul surface sampling

Vanadium assay up to 1.27% Huemul surface sampling

Potential mineralized trend 4 kilometres Uryco/Rosa and Black zone trends

Project land package more than 27,000 hectares Huemul Project

Samples submitted 200 samples Including 6 blanks and 6 duplicates

Pending uranium assay >25,000 ppm One over-limit sample pending reanalysis

Historical Context

5 past events · Latest: Aug 04 (Positive)

Pattern 5 events

Date	Event	Sentiment	24h Move	Catalyst
Aug 04	Partnership announcement	Positive	-0.6%	Five-year WVU jersey sponsorship agreement announced by Antero companies
Jul 29	2Q26 earnings report	Positive	+0.1%	Adjusted EBITDA increased while post-dividend free cash flow remained positive
Jul 15	Dividend announcement	Positive	+1.9%	Quarterly dividend declared alongside share repurchase authorization update
Jul 15	Earnings date notice	Neutral	+1.9%	Second-quarter earnings release and conference call dates were announced
Apr 29	1Q26 earnings report	Positive	-0.1%	Adjusted EBITDA and free cash flow were reported alongside increased gathering volumes

24h Move is the share-price change in the day after each event; other market factors may also have contributed.

Pattern Detected

The selected history showed mixed reactions, with positive or informational announcements followed by both positive and negative 24-hour changes.

Key Terms

assay, qa/qc, ni 43-101, sodium peroxide decomposition

4 terms

assay technical

"final assay results for copper"

An assay is a laboratory test that detects or measures how much of a specific substance is present or how well something performs, like measuring a drug’s concentration, a material’s purity, or a biomarker’s level. For investors, assay results act like a thermometer or quality check: they provide objective evidence about a product’s effectiveness, safety, or manufacturing consistency, and can strongly influence regulatory approval, market acceptance, and company valuation.

qa/qc technical

"for QA/QC assessment"

QA/QC stands for Quality Assurance and Quality Control, processes used to ensure products or services meet certain standards. Think of it as a way to check that a product is safe and works properly before reaching consumers, similar to how a chef tastes food before serving it. For investors, strong QA/QC practices indicate a company's commitment to delivering reliable, high-quality offerings, reducing risks and building trust.

ni 43-101 regulatory

"under NI 43-101 or Subpart 1300"

A Canadian regulatory standard that sets the rules for how mining and exploration companies must report mineral resources and reserves, requiring technical reports prepared or signed off by an independent, certified expert. It matters to investors because it creates a consistent, transparent “inspection report” for mining projects, making it easier to compare prospects, judge the reliability of claims, and assess geological and financial risk before investing.

sodium peroxide decomposition technical

"using sodium peroxide decomposition method ME-MS89L"

Sodium peroxide decomposition is the chemical breakdown of sodium peroxide into other compounds (often sodium oxide or hydroxide) with the release of oxygen, heat, or gas when exposed to heat, moisture, or acids. For investors, it matters because the tendency to decompose affects how the material is stored, transported, and handled, influencing safety risk, regulatory compliance, production yields, inventory losses, and potential liability—similar to how a shaken soda can unexpectedly releases pressure and contents.

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08/18/2026 - 04:14 PM

Channel and rock chip samples from areas of visible uranium-copper-vanadium mineralization observed at surface returned final assay results for copper (up to 8.54%), uranium (up to 2.27%), silver (up to 708 g/t) and vanadium (up to 1.27%)¹.
Sampling of strike extensions along the Uryco/Rosa and Black zone trends has identified a potential 4-kilometre-long trend of copper mineralization exposed at surface
One over-limit sample result for uranium (>25,000 ppm) is still pending.

Table 1 Highlights for Cu above 2.0%, based on final assay results at Huemul, include:

TORONTO, Aug. 18, 2026 /PRNewswire/ -- Jaguar Uranium Corp. (NYSE-AM: JAGU) ("Jaguar") is pleased to announce final assay results for copper from its initial rock sampling program (announced on July 20, 2026) at the Huemul Uranium-Copper-Vanadium (U-Cu-V) Project, located in Malargüe, Mendoza Province, Argentina across the more than 27,000-hectare district-scale project. The Company is planning a maiden drill campaign at the project which includes a past producing mine.

Management Commentary

"These results reinforce what drew us to Huemul in the first place. Copper grades as high as 8.54%, paired with strong uranium and vanadium values across multiple target areas, support our view that this historic district has considerable exploration potential. We're moving quickly toward a maiden drill campaign to test these targets at depth," said Steven Gold, President & Chief Executive Officer.

A District with Documented Historical Production

The Huemul Project is anchored by Argentina's first-ever producing uranium mine, commissioned in 1955 and operated continuously until 1975 by the Comisión Nacional de Energía Atómica (CNEA). Historical records report that approximately 130,000 tonnes of mineralized material, historically described as ore, were processed at the Malargüe plant, with reported average head grades of 0.21% uranium, 2.0% copper and 0.11% vanadium (source: Guillermo Rojas, 1999. Distrito Uranìfero Pampa Amarilla, Mendoza. En Recursos Minerales de la Republica Argentina. Pag.1135-1140). The Company has not independently verified the historical production records or historical head-grade information, and such information should not be interpreted as current exploration results, a mineral resource estimate, a mineral reserve estimate or evidence of current economic viability.

The project hosts uranium-copper-vanadium mineralization in a classic sandstone-hosted deposit setting. The broader Malargüe Mining District remains largely untested by modern exploration methods. Based on the presence of a former producing mine, historical exploration data, and the extent of the Company's land package, management believes the project warrants further systematic exploration.

_______________________________

¹ Because sampling was selective and targeted areas of visiblemineralization, the results may be biased high and should not be considered representative of grade distribution, continuity ormineralization across theHuemulProjectOne

Sampling Program

Jaguar conducted targeted sampling included outcrop, subcrop, rock chip composite, channel and float samples, across areas of visible surface mineralization. Field observations were generally consistent with the presence of mineralization described in historical reports, particularly around the former Huemul mine, as described previously here. Samples were collected from eight target areas, namely, Huemul Mine, Agua Botada, Uryco, Rosa, Vega Larga, Black Zone, Cerro Mirano and Lucy (Figure 1).

Channel samples were collected over intervals ranging from 50 cm to 280 cm. All samples were packaged and sealed at the project site by Jaguar geologist and transported to ALS in Mendoza, Argentina for analysis using sodium peroxide decomposition method ME-MS89L™. ALS Mendoza is a full-service laboratory and is ISO/IEC 17025 accredited sample preparation and geochemical analysis. ALS Mendoza is independent of Jaguar.

Jaguar included 6 Blanks and 6 Duplicates as part of the sample submission (200 samples in total) for QA/QC assessment. Blank material performed satisfactorily. Two duplicate samples did not compare well and were subsequently re-analysed. The re-analysis confirmed the original assay values for those samples. The QP considers the QA/QC results satisfactory, and the assay results suitable for disclosure.

Figure 1 Huemul Project Target and Surface Sampling Locations

Since the sampling of visible mineralization is selective by nature, the exploration results disclosed in this news release are potentially biased and do not establish the extent and continuity of grade, tonnage, economic significance, mineral resources or mineral reserves of the Huemul Project.

Results

Most notably, sampling of strike extensions at the Uryco/Rosa and Black zone trend identified a potential 4-kilometre trend of copper mineralization observed in outcrop, consistent with the scale of the system suggested by historical work.

Selected significant results from the surface sampling with U grades greater than 100 ppm or Cu grades greater than 1.0% are presented in Table 2 below. The 100 ppm U and 1.0% Cu reporting thresholds used for Table 2 are exploration reporting thresholds selected by the Company and should not be interpreted as a cut-off grade, economic threshold, or indication of mineral resources or mineral reserves. A full tabulation of the sample coordinates, sample types and assay results is reported in Appendix 1.

Table 2 Selected significant results U (greater than 100 ppm) or Cu (greater than 1.0%)

Sample ID	Ag (ppm)	Cu (%)	U (ppm)	V (ppm)	Sample ID	Ag (ppm)	Cu (%)	U (ppm)	V (ppm)
4243	11	0.268	107	27	4332	6	0.793	529	271
4245	106	0.336	1325	43	4333	15	2.020	52	38
4246	43	0.816	2090	45	4334	38	1.640	141	51
4247	95	2.300	155	45	4335	62	5.780	139	54
4248	13	1.685	104	38	4336	18	1.750	168	102
4252	15	0.073	112	50	4337	372	1.435	102	377
4255	11	0.971	275	147	4340	635	0.157	1685	1005
4257	64	4.040	272	109	4341	<5	1.460	62	35
4274	14	0.418	2230	455	4344	<5	3.820	123	45
4275	14	0.275	201	146	4347	<5	1.175	3	29
4276	16	0.692	303	126	4348	13	4.480	202	38
4277	31	0.294	8970	2000	4350	8	1.050	39	33
4278	32	1.235	5470	3880	4358	12	2.780	161	59
4282	28	1.145	45	111	4359	10	3.680	79	46
4284	708	1.460	4210	2780	4361	19	2.000	279	58
4285	68	1.810	153	373	4362	7	1.595	78	35
4290	79	0.839	22700	9010	4365	<5	8.540	22	111
4291	105	0.272	20700	7070	4366	<5	4.330	27	46
4292	45	0.171	20500	7200	4372	<5	2.350	24	86
4293	17	0.229	8400	3650	4374	5	2.200	63	50
4294	12	0.305	552	1055	4375	5	3.050	60	43
4295	5	0.247	117	735	4383	105	1.325	60	112
4296	133	2.040	14350	7270	4384	<5	2.370	9	44
4297	212	0.417	15250	5330	4387	77	0.017	241	33
4298	85	0.228	18300	7840	4396	62	1.590	55	82
4299	5	0.077	165	366	4399	205	1.355	725	150
4300	6	0.094	116	152	4400	10	2.050	94	30
4301	8	0.075	170	73	4401	15	1.160	110	49
4302	25	1.240	836	324	4402	23	1.055	102	49
4303	9	0.194	557	78	4403	27	3.660	78	48
4304	18	0.808	654	296	4404	9	1.920	98	45
4306	13	0.332	1165	353	4405	38	4.370	320	51
4308	9	0.368	1915	1400	4408	21	5.110	241	90
4309	62	0.474	2880	154	4409	5	1.775	48	64
4312	11	0.230	309	167	4411	<5	0.075	263	45
4313	25	1.025	889	147	4414	<5	0.098	234	38
4319	210	1.620	>25000	12700	4421	36	1.935	106	64
4321	<5	0.008	163	84	4423	17	4.270	26	64
4324	7	0.131	242	314	4424	8	3.110	12	56
4325	8	2.080	45	48	4425	<5	2.200	4	40
4328	<5	3.390	52	75

Notes:

1) ppm = g/t

2) 10,000 ppm = 1.0%

3) Values reported as '>25,000 ppm' exceed the upper detection limit and are subject to over-limit reanalysis; final values may differ.

Huemul Mine / Agua Botada Trend

The Huemul Mine / Agua Botada Trend represents a predominantly uranium-vanadium mineralized zone. Mineralization is hosted in the Diamante Formation sandstones, conglomerates, shales and volcano-clastics striking north south and dipping 20-25° to the west in the north and becoming flat lying to the south. Recent sampling results appear show the dominance of U over Cu in this area (Figure 3).

Figure 2 Uranium and copper surface sampling results along the Huemul Mine – Agua Botada Trend.

Uryco-Rosa, Black Zone and Vega Larga Trend

The Cerro Mirano, Uryco-Rosa, Black Zone and Vega Larga areas are dominated by Cu-U-V±Ag mineralization. Mapping, rock sampling and gamma surveying have delineated the Uryco-Rosa, Black Zone and Vega Larga target areas, with apparent strike lengths of approximately 2,200 m, 1,300 m and 2,300 m, respectively, hosted along conglomerate and sandstone horizons of the Diamante Formation that collectively define a greater than 4 km corridor of mineralized occurrences. The Cerro Mirano mineralized zone is related to the intrusion of andesitic dikes and is approximately 300 m long. Recent sampling results appear to show the dominance of Cu over U in this area (Figure 3).

Figure 3 Uranium and copper surface sampling results along the Uryco-Rosa, Black Zone and Vega Larga Trend.

Data Verification

Over-limit samples for copper (indicated as >25000) were re-analysed by ALS using 4 acid digest and ICP finish (ME-OG62™). One over-limit sample for uranium (indicated as >25000) is being re-analysed using XRF for base metal ores by fusion (ME-XRF15b™) and is still pending. Duplicate re-analysis confirmed the original assay results that were received and indicates a potential sample swap, either during project preparation, or at the laboratory. In the opinion of the QP, these issues are not material at this stage of the project but will need closer attention during further work phases.

The QP's review of the sampling, analytical and QA/QC information disclosed in this news release was limited to a review of information provided by the Company and its consultants, including sample locations, sample descriptions, analytical certificates, analytical methods and QA/QC results. The QP has not completed a current site visit to the Huemul Project and has not independently observed or physically verified the sampling procedures, sample locations, sample security or chain-of-custody procedures. The QP has not independently verified the historical production, historical grade or historical exploration information referenced in this news release. The QP's review is subject to the limitations described herein, including the selective nature of the samples, pending over-limit reanalysis for certain uranium.

Cautionary Note

The Huemul Project is an exploration-stage property. No mineral resource or mineral reserve estimate has been prepared for the Huemul Project under National Instrument 43-101 — Standards of Disclosure for Mineral Projects ("NI 43-101") or Subpart 1300 of Regulation S-K. The surface sampling results disclosed in this news release are exploration results only and should not be interpreted as establishing the presence of mineral resources or mineral reserves. Rock chip and channel samples are selective by nature and may not be representative of mineralization across the property.

Historical production, grade and exploration information referenced in this news release is historical in nature and has not been independently verified by the Company or by a qualified person under NI 43-101 or Subpart 1300 of Regulation S-K. The Company is not treating this information as current mineral resources, mineral reserves, or current exploration results. The information is considered relevant because it indicates the presence of uranium-copper-vanadium mineralization on the property, but it should not be relied upon until confirmed by additional exploration work.

Qualified Person

The scientific and technical information contained in this news release has been reviewed and approved by George van der Walt, Pr.Sci.Nat., an independent Principal Consultant with The MSA Group (Pty) Ltd., who is a qualified person under NI 43-101 and Subpart 1300 of Regulation S-K. Mr. van der Walt has reviewed the sampling, analytical and QA/QC information disclosed in this news release on the basis of information provided by the Company and its consultants and has approved the technical disclosure in the form and context in which it appears. Mr. van der Walt has not completed a current site visit to the Huemul Project and has not independently observed or physically verified the sampling procedures or sample chain of custody.

About Jaguar Uranium

Jaguar Uranium Corp. is a South America-focused uranium exploration company advancing a portfolio of prospective brownfield projects across Argentina and Colombia. In Argentina, Jaguar is advancing the Laguna Salada Project in Chubut Province and the historic Huemul uranium mine in Mendoza Province. Anchored by a former producing mine, a historic uranium district and exploration projects supported by historical drilling, the Company is focused on advancing and expanding uranium opportunities across the region. The Company's Berlin Project in Caldas Province, Colombia is a district-scale, sedimentary-hosted polymetallic system historically reported to host uranium alongside rare earth elements, vanadium, nickel, phosphate, molybdenum, rhenium and zinc. Jaguar completed a $25 million initial public offering on NYSE American in February 2026 and is led by an experienced team with backgrounds in exploration, permitting, project development and mining finance in South America.

www.jaguaruranium.com

Forward Looking Statements

This news release contains "forward-looking statements" within the meaning of applicable U.S. and Canadian securities laws. Forward-looking statements are statements that are not historical facts and include, without limitation, statements regarding: the timing and results of assay data; the interpretation of exploration results; the potential extent, continuity, and significance of observed mineralization; the identification of prospective target areas; the potential for discovery; planned or future exploration programs; and the Company's expectations regarding the Huemul Project and the broader Malargüe district.

Forward-looking statements are based on a number of material assumptions, including, but not limited to: the accuracy of historical data; the reliability of sampling and field observations; the completion of over-limit reanalysis and any duplicate-sample follow-up without material adverse changes to the preliminary interpretation; the continuity of mineralization observed at surface; the receipt of assay results consistent with expectations; the availability of financing and personnel; the availability of equipment, laboratory capacity, property access and required permits; and the Company's ability to execute its exploration plans as currently contemplated.

Forward-looking statements are subject to known and unknown risks, uncertainties and other factors that may cause actual results to differ materially from those expressed or implied by such statements. These risks and uncertainties include, among others: the risk that assay results or over-limit reanalysis results do not confirm preliminary observations; risks relating to the interpretation of exploration results; risks that duplicate-sample reanalysis or additional QA/QC review may affect the interpretation of results; the possibility that mineralization is not continuous or of economic grade; risks associated with early-stage exploration properties; the selective nature of rock chip, channel, composite, select and mine-dump samples; reliance on historical data that may be incomplete or inaccurate; commodity price volatility; permitting and regulatory risks; operational and technical risks; and general economic, market and industry conditions.

Forward-looking statements speak only as of the date of this news release. Except as required by applicable securities laws, the Company undertakes no obligation to update or revise any forward-looking statements to reflect events or circumstances after the date of this release or to reflect the occurrence of unanticipated events.

APPENDIX 1: Full tabulation of final sample assay results

Sample ID	Easting	Northing	Sample Type	Channel Length (cm)	Channel Orientation (°)	Ag (ppm)	Cu (%)	U (ppm)	V (ppm)
4226	2440636	6042968	Outcrop Chip			<5	0.002	3	60
4227	2440703	6042691	Subcrop Channel	160	250	<5	0.002	1	72
4228	2440703	6042691	Subcrop Channel	80	250	<5	0.003	1	177
4229	2440718	6042793	Outcrop Channel		100	<5	<0.002	3	87
4230	2439837	6043204	Outcrop Channel	140	250	<5	<0.002	2	10
4231	2439756	6042929	Outcrop Channel	120	0	<5	<0.002	1	48
4232	2440192	6043308	Outcrop Composite			<5	<0.002	4	14
4233	2440183	6042783	Outcrop Channel	200	270	<5	<0.002	1	35
4234	2440176	6042580	Outcrop Channel	120	260	<5	0.002	2	36
4235	2440428	6042411	Outcrop Composite			<5	<0.002	2	38
4236	2440446	6042469	Outcrop Channel	110	280	<5	<0.002	1	24
4237	2440493	6042537	Outcrop Composite			<5	<0.002	1	61
4238	2440436	6042855	Outcrop Composite			<5	<0.002	2	50
4239	2440759	6042423	Outcrop Channel	80	270	<5	0.003	1	163
4240	2440656	6042568	Outcrop Composite			<5	0.002	2	43
4241	2440743	6042595	Outcrop Channel	80	270	<5	0.003	1	183
4242	2440196	6041287	Mine Dump			19	0.135	86	29
4243	2440196	6041287	Mine Dump			11	0.268	107	27
4244	2440210	6041262	Mine Dump	150	280	<5	0.122	58	40
4245	2440205	6041268	Mine Dump	200	15	106	0.336	1325	43
4246	2440228	6041289	Mine Dump			43	0.816	2090	45
4247	2440310	6041673	Subcrop Composite			95	2.300	155	45
4248	2440323	6041677	Mine Dump			13	1.685	104	38
4249	2440247	6041822	Outcrop Composite			<5	0.009	4	83
4250	2440244	6041754	Outcrop Composite			<5	0.004	2	54
4251	2440179	6041612	Outcrop Composite			<5	0.005	3	87
4252	2440208	6041110	Mine Dump			15	0.073	112	50
4253	2440247	6041081	Outcrop Channel	120	280	<5	0.002	4	36
4254	2440247	6041081	Outcrop Channel	80	280	<5	0.002	7	75
4255	2440240	6041074	Outcrop Channel	60	270	11	0.971	275	147
4257	2440240	6041074	Outcrop Channel	110	270	64	4.040	272	109
4259	2440226	6041078	Outcrop Channel	70	300	<5	0.009	16	66
4260	2440226	6041078	Outcrop Channel	80	300	<5	0.009	9	48
4261	2440233	6041081	Outcrop Channel	100	300	<5	0.028	31	33
4262	2440214	6041079	Outcrop Composite			<5	0.005	6	82
4263	2440214	6041079	Outcrop Channel	80	280	<5	0.006	8	57
4264	2440202	6041075	Outcrop Channel	120	280	<5	0.002	12	49
4265	2440202	6041075	Outcrop Channel	100	280	<5	0.014	6	31
4266	2440197	6041068	Outcrop Channel	90	280	5	0.140	65	41
4267	2440197	6041068	Outcrop Channel	50	270	<5	0.013	5	104
4268	2440197	6041068	Outcrop Channel	70	270	<5	0.005	4	41
4269	2440104	6041042	Outcrop Composite			<5	0.002	3	56
4270	2440073	6040983	Outcrop Channel	120	280	<5	0.002	3	67
4271	2440107	6040952	Outcrop Composite			<5	0.002	2	52
4272	2439953	6040953	Outcrop Channel	120		<5	<0.002	5	28
4273	2439991	6040998	Outcrop Composite			<5	<0.002	5	47
4274	2440019	6040663	Mine Dump	150		14	0.418	2230	455
4275	2440032	6040624	Mine Dump	180		14	0.275	201	146
4276	2439981	6040684	Mine Dump	170		16	0.692	303	126
4277	2439977	6040682	Mine Dump			31	0.294	8970	2000
4278	2439970	6040697	Mine Dump			32	1.235	5470	3880
4279	2440041	6040718	Outcrop Composite			<5	0.010	57	66
4280	2440059	6040708	Outcrop Channel	230	30	<5	0.058	45	124
4281	2440061	6040715	Outcrop Channel	200	30	17	0.820	43	99
4282	2440060	6040718	Outcrop Channel	200	0	28	1.145	45	111
4283	2440063	6040718	Outcrop Channel	200	0	30	0.815	74	418
4284	2440064	6040722	Outcrop Channel	200	0	708	1.460	4210	2780
4285	2440062	6040724	Outcrop Channel	200	0	68	1.810	153	373
4288	2440062	6040720	Outcrop Channel	200	0	33	0.686	55	114
4289	2440062	6040726	Outcrop Channel	200	0	24	0.925	91	117
4290	2440061	6040729	Outcrop Channel	200	0	79	0.839	22700	9010
4291	2440061	6040730	Outcrop Channel	200	0	105	0.272	20700	7070
4292	2440060	6040732	Outcrop Channel	200	0	45	0.171	20500	7200
4293	2440061	6040735	Outcrop Channel	200	0	17	0.229	8400	3650
4294	2440063	6040735	Outcrop Channel	200	0	12	0.305	552	1055
4295	2440063	6040739	Outcrop Channel	200	0	5	0.247	117	735
4296	2440061	6040742	Outcrop Channel	200	0	133	2.040	14350	7270
4297	2440062	6040744	Outcrop Channel	200	0	212	0.417	15250	5330
4298	2440066	6040748	Outcrop Channel	180	90	85	0.228	18300	7840
4299	2440086	6040746	Subcrop Composite			5	0.077	165	366
4300	2439969	6040765	Mine Dump	150	90	6	0.094	116	152
4301	2440149	6040367	Mine Dump	200	60	8	0.075	170	73
4302	2440127	6040380	Not recorded			25	1.240	836	324
4303	2440105	6040400	Mine Dump	200	60	9	0.194	557	78
4304	2440089	6040433	Mine Dump	200	0	18	0.808	654	296
4305	2440067	6040431	Mine Dump	200	0	<5	0.032	57	104
4306	2440050	6040415	Mine Dump	200	0	13	0.332	1165	353
4307	2440048	6040411	Mine Dump	200	0	5	0.038	63	103
4308	2440026	6040427	Mine Dump	200	130	9	0.368	1915	1400
4309	2440102	6040525	Mine Dump			62	0.474	2880	154
4310	2440059	6040485	Mine Dump	200	120	<5	0.034	65	86
4311	2440049	6040444	Mine Dump	200	290	<5	0.057	53	66
4312	2440006	6040439	Mine Dump	200		11	0.230	309	167
4313	2440015	6040444	Mine Dump			25	1.025	889	147
4314	2440023	6040479	Mine Dump	200	110	<5	0.011	22	62
4315	2440039	6040509	Mine Dump	200	170	<5	0.068	93	74
4318	2440079	6040521	Mine Dump	200	150	<5	0.025	27	86
4319⁽⁸⁾	2440065	6040738	Outcrop Composite			210	1.620	>25000	12700
4320	2440241	6040636	Subcrop Composite			<5	0.008	93	68
4321	2440293	6040594	Outcrop Channel	280	90	<5	0.008	163	84
4322	2440203	6040235	Outcrop Composite			<5	0.039	18	40
4323	2439940	6040265	Outcrop Composite			<5	0.008	9	48
4324	2440102	6040482	Mine Dump	200	200	7	0.131	242	314
4325	2440050	6039769	Outcrop Composite			8	2.080	45	48
4326	2445263	6035159	Outcrop Composite			<5	0.006	4	39
4327	2445270	6035090	Outcrop Composite			26.0	0.026	32	98
4328	2445247	6035007	Outcrop Composite			<5	3.390	52	75
4329	2445250	6035005	Outcrop Composite			<5	0.049	11	45
4330	2448707	6035962	Outcrop Composite			35	0.449	54	47
4331	2448711	6035963	Outcrop Composite			17	0.140	37	36
4332	2444003	6037410	Mine Dump			6	0.793	529	271
4333	2444000	6037374	Outcrop Composite			15	2.020	52	38
4334	2449818	6037854	Outcrop Select			38	1.640	141	51
4335	2449740	6037990	Outcrop Composite			62	5.780	139	54
4336	2449690	6038031	Mine Dump			18	1.750	168	102
4337	2448998	6038428	Outcrop Channel	120	270	372	1.435	102	377
4338	2449015	6038412	Outcrop Channel	110		7	0.759	6	46
4339	2444807	6036267	Float Select			<5	0.007	6	33
4340	2444815	6036263	Subcrop Select			635	0.157	1685	1005
4341	2445076	6036272	Outcrop Channel	150	180	<5	1.460	62	35
4342	2445080	6036264	Outcrop Channel	70	180	<5	0.310	30	74
4343	2445083	6036264	Outcrop Channel	100	180	<5	0.013	4	35
4344	2445090	6036269	Mine Dump	200	0	<5	3.820	123	45
4346	2445181	6036252	Outcrop Channel	100	180	<5	0.433	4	41
4347	2445249	6036248	Subcrop Channel	200	240	<5	1.175	3	29
4348	2446002	6036256	Outcrop Channel	160		13	4.480	202	38
4350	2445961	6036251	Outcrop Composite			8	1.050	39	33
4351	2445917	6036262	Outcrop Channel	180	110	<5	0.976	22	32
4352	2445852	6036280	Outcrop Composite			<5	0.722	6	41
4353	2445726	6036259	Outcrop Channel	100	180	<5	0.139	31	101
4354	2445723	6036260	Outcrop Channel	150	180	<5	0.362	10	32
4355	2445720	6036263	Outcrop Channel	200	180	<5	0.533	7	33
4356	2445523	6036252	Outcrop Channel	130	240	<5	0.383	3	25
4357	2445445	6036254	Outcrop Composite			<5	0.734	4	27
4358	2445458	6036301	Outcrop Channel	180	180	12	2.780	161	59
4359	2446453	6036262	Outcrop Composite			10	3.680	79	46
4360	2446565	6036305	Outcrop Channel	120	180	9	0.926	58	43
4361	2446544	6036304	Outcrop Channel	110	180	19	2.000	279	58
4362	2446519	6036288	Outcrop Channel	170	180	7	1.595	78	35
4363	2446349	6036247	Mine Dump	200	120	31	0.998	134	53
4364	2446311	6036238	Outcrop Composite			<5	0.507	18	29
4365	2446201	6036261	Outcrop Channel	100		<5	8.540	22	111
4366	2447091	6036238	Outcrop Channel	150	180	<5	4.330	27	46
4367	2447078	6036240	Outcrop Channel	150	180	<5	0.831	25	47
4368	2446759	6036239	Outcrop Composite			<5	0.601	6	25
4369	2446639	6036267	Outcrop Composite			<5	0.836	18	32
4370	2446798	6036260	Outcrop Composite			<5	0.046	23	100
4371	2447195	6036214	Outcrop Composite			<5	0.161	6	35
4372	2447903	6035889	Outcrop Channel	120	120	<5	2.350	24	86
4373	2447824	6035915	Outcrop Composite			<5	0.339	4	48
4374	2448267	6035877	Subcrop Select			5	2.200	63	50
4375	2448287	6035870	Subcrop Select			5	3.050	60	43
4378	2446352	6035774	Outcrop Channel	150	50	<5	0.559	30	56
4379	2446347	6035763	Outcrop Channel		30	<5	0.466	5	47
4380	2446126	6035620	Outcrop Composite			<5	0.593	22	46
4381	2446032	6035350	Outcrop Composite			<5	0.004	30	31
4382	2446146	6035400	Outcrop Channel	120	40	<5	0.038	19	54
4383	2445480	6035148	Outcrop Composite			105	1.325	60	112
4384	2445490	6035156	Outcrop Composite			<5	2.370	9	44
4385	2445774	6035357	Outcrop Composite			24	0.217	59	94
4386	2445770	6035347	Float Select			8	0.569	62	42
4387	2445772	6035252	Outcrop Channel	60	240	77	0.017	241	33
4388	2445567	6034864	Outcrop Composite			13	0.065	36	67
4389	2445522	6034904	Outcrop Channel	160	20	<5	0.007	33	47
4390	2445517	6034897	Outcrop Channel	200	10	<5	0.003	25	46
4391	2447591	6036155	Subcrop Composite			7	0.213	45	34
4392	2448224	6035655	Float Select			<5	0.096	5	29
4393	2448187	6035678	Subcrop Select			<5	0.081	8	38
4394	2448134	6035690	Float Select			39	0.423	36	65
4395	2448135	6035316	Outcrop Select			26	0.569	66	28
4396	2444590	6036319	Outcrop Channel	170	180	62	1.590	55	82
4397	2444667	6036313	Outcrop Channel	80	180	<5	0.701	22	29
4398	2444716	6036295	Outcrop Channel	170	180	<5	0.880	18	40
4399	2444580	6036321	Outcrop Channel	170	180	205	1.355	725	150
4400	2450109	6037912	Outcrop Channel	150	140	10	2.050	94	30
4401	2449781	6037862	Outcrop Select			15	1.160	110	49
4402	2449771	6037840	Outcrop Select			23	1.055	102	49
4403	2449827	6037945	Float Select			27	3.660	78	48
4404	2449782	6037967	Outcrop Channel	100	180	9	1.920	98	45
4405	2449780	6037962	Mine Dump	200	150	38	4.370	320	51
4408	2449651	6038044	Outcrop Composite			21	5.110	241	90
4409	2449667	6038061	Float Select			5	1.775	48	64
4410	2446412	6034546	Outcrop Select			<5	0.129	59	37
4411	2446202	6034613	Outcrop Channel	100	200	<5	0.075	263	45
4412	2446202	6034613	Outcrop Channel	120	200	<5	0.015	98	37
4413	2446202	6034613	Outcrop Select			<5	0.021	14	40
4414	2445908	6034400	Outcrop Channel	170	310	<5	0.098	234	38
4415	2445908	6034399	Outcrop Channel	120	310	<5	0.005	20	51
4416	2445785	6034305	Outcrop Channel	120	90	<5	0.007	24	54
4417	2445791	6034307	Outcrop Channel	110	0	<5	0.006	12	32
4418	2445204	6034412	Outcrop Channel	160	160	<5	0.393	4	57
4419	2445209	6034419	Outcrop Channel	140	0	<5	0.069	5	28
4420	2445117	6034346	Subcrop Composite			<5	0.367	1	52
4421	2445091	6034329	Float Select			36	1.935	106	64
4422	2445090	6034328	Subcrop Channel	100	30	<5	0.135	2	31
4423	2447696	6041535	Outcrop Composite			17	4.270	26	64
4424	2447729	6041426	Outcrop Composite			8	3.110	12	56
4425	2444862	6043361	Outcrop Composite			<5	2.200	4	40

Notes:

Coordinates Projection: Campo Inchauspe / Argentina 2 (ellipsoid: International 1924)
ppm = g/t
10,000 ppm = 1.0%
The primary ALS analytical method was "ME-MS89L™", which is a sodium peroxide decomposition for complete recovery of lithium, rare earths, and associated trace elements.
"<" indicates below lower limit of detection, ">" indicates above upper limit of detection.
Over-limit samples for Cu (>25,000) were analysed using the ALS method "ME-OG62™", which is uses four acid digestion to break down most silicates and all but the most resistive minerals.
Over-limit samples for U (>25,000) are being analysed using the ALS method "U-XRF15b™", which is ore grade XRF assay of a sample prepared by fusion with an oxidizing flux.
Over-limit U assay result still pending.

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SOURCE Jaguar Uranium Corp.

FAQ

What did Jaguar Uranium (NYSE-AM: JAGU) report in the August 18, 2026 Huemul assay results?

Jaguar Uranium reported selective surface samples from Huemul with copper up to 8.54%, uranium up to 2.27%, silver up to 708 g/t and vanadium up to 1.27%. According to Jaguar, these results are early-stage exploration and not mineral resource estimates.

How significant is the potential 4-km copper trend reported by Jaguar Uranium at Huemul?

Jaguar Uranium identified a potential greater than 4 km corridor of copper-bearing occurrences across Uryco-Rosa, Black Zone and Vega Larga. According to Jaguar, mapped strike lengths of 2,200 m, 1,300 m and 2,300 m outline a district-scale exploration target, pending drilling and further work.

What are the highest assay grades reported from Jaguar Uranium’s Huemul project in 2026?

Jaguar Uranium’s 2026 Huemul sampling returned up to 8.54% copper, uranium values up to 2.27% U (with one sample >25,000 ppm pending), 708 g/t silver and 1.27% vanadium. According to Jaguar, these are selective samples from visible mineralization and may be biased high.

Does Jaguar Uranium’s Huemul sampling establish mineral resources or reserves for AM/JAGU shareholders?

No, the Huemul sampling does not establish mineral resources or reserves. According to Jaguar, rock chip and channel samples are selective, potentially biased, and are reported only as exploration results under NI 43-101 and Subpart 1300, without economic viability demonstrated.

What quality assurance and data verification steps did Jaguar Uranium use for the Huemul assays?

Jaguar Uranium sent 200 samples to ALS Mendoza, using sodium peroxide decomposition and over-limit reanalysis methods. According to Jaguar, blanks and duplicates performed satisfactorily, though a potential sample swap and one pending over-limit uranium result require closer attention in future phases.

Where is Jaguar Uranium’s Huemul project located and what is its historical context?

The Huemul project lies in Malargüe, Mendoza Province, Argentina, covering over 27,000 hectares. According to Jaguar, it includes Argentina’s first uranium mine, historically operated from 1955 to 1975, though past production and grades have not been independently verified or treated as current resources.

What are Jaguar Uranium’s next steps at the Huemul uranium-copper-vanadium project after these assay results?

Jaguar Uranium plans a maiden drill campaign to test Huemul targets at depth following surface sampling. According to Jaguar, further systematic exploration will focus on the Uryco-Rosa, Black Zone, Vega Larga corridor and other targets to better define mineralization continuity and potential scale.