enCore Energy Extends Uranium Mineralization 3,700 Feet at Alta Mesa East
Rhea-AI Summary
enCore Energy (NASDAQ: EU, TSXV: EU) reported initial exploration drilling results from its 5,900-acre Alta Mesa East (AME) uranium project, adjacent to existing Alta Mesa ISR operations.
Uranium mineralization extends over 3,700 feet east, with 10 of 17 holes mineralized and six holes achieving Grade Thickness (GT) between 0.351 and 2.297, above the 0.3 GT threshold considered suitable for ISR wellfield inclusion.
AI-generated analysis. Not financial advice.
Positive
- Uranium mineralization confirmed extending over 3,700 feet east of existing Alta Mesa wellfield
- 10 of 17 initial Alta Mesa East drill holes intersected uranium mineralization
- Six drill holes reported GT values between 0.351 and 2.297, above the 0.3 ISR threshold
- Exploration advancing with six drilling rigs operating on the 5,900-acre Alta Mesa East project
- Multiple Goliad Formation sand horizons mineralized at 400–520 feet depth, all saturated for ISR
Negative
- None.
Key Figures
Market Reality Check
Peers on Argus
EU was up 1.91% while uranium peers showed mixed but generally positive moves: URG +0.62%, DNN +1.75%, UEC +2.61%, and UUUU slightly negative at -0.05%. This suggests the move occurred alongside broader uranium strength rather than in isolation.
Historical Context
| Date | Event | Sentiment | Move | Catalyst |
|---|---|---|---|---|
| Apr 20 | Leadership change | Neutral | +1.4% | CEO appointment and renewal program focused on costs and asset development. |
| Mar 09 | Year-end earnings | Positive | +2.1% | Reported 2025 results with higher U3O8 extraction and strengthened liquidity. |
| Mar 02 | External role news | Neutral | -14.1% | Founder appointed Executive Chair at Verdera, where he is major shareholder. |
| Mar 02 | Governance change | Negative | -14.1% | Founder retired as Executive Chair and director, becoming Chairman Emeritus. |
| Feb 18 | Share distribution | Positive | +1.2% | Planned distribution of Verdera common shares to enCore shareholders. |
Recent company-specific news, including leadership changes and capital markets actions, has generally seen modest positive price reactions, with one notable negative move tied to governance changes.
Over the past few months, enCore reported several corporate and financial milestones. On Feb 18, 2026, it outlined plans to distribute 35,000,000 Verdera shares, which saw a modest positive reaction. Governance changes around Mar 2, 2026, including William Sheriff’s role shift and Verdera appointment, coincided with a -14.07% move. Year-end 2025 results on Mar 9, 2026 highlighted strong operational growth and liquidity. Most recently, on Apr 20, 2026, enCore announced a new CEO and renewal program, again with a small positive price response. Today’s drilling update fits into this ongoing operational and asset-development narrative.
Regulatory & Risk Context
enCore filed Amendment No. 3 to its Form S-3 on Nov 13, 2025, reinstating a delaying legend so the registration only becomes effective upon a later amendment or SEC determination. The amendment refreshed the auditor’s consent and did not change the base prospectus; no usage has been recorded from this shelf to date.
Market Pulse Summary
This announcement highlights continued progress at Alta Mesa East, where initial drilling confirmed uranium mineralization extending over 3,700 feet and multiple intervals above the 0.3 GT ISR cutoff. The results advance enCore’s strategy to expand In-Situ Recovery operations adjacent to existing Alta Mesa wellfields. Historically, company news around asset development and corporate actions has produced mixed but often modest price reactions. Investors may watch for additional drill results, permitting milestones, and any future use of the existing but noneffective S-3 shelf amendment.
Key Terms
in-situ recovery technical
u3o8 technical
roll fronts technical
national instrument 43-101 regulatory
s-k 1300 regulatory
AI-generated analysis. Not financial advice.
NASDAQ: EU
TSXV: EU
www.encoreuranium.com
Exploratory drilling tests are designed to outline mineralization, which will guide the Company's efforts in permitting and expanding In-Situ Recovery ("ISR") operations into the AME from the existing Alta Mesa operations. These initial results have confirmed uranium mineralization extending more than 3,700 feet to the east from the nearest wellfield.
William M. Sheriff, Executive Chairman of enCore, said, "Our initial drill results from Alta Mesa East have reconfirmed our expectations of encouraging uranium grades across all major mineralized sand units known to exist at Alta Mesa. Uranium extraction efforts from these sand units at the Alta Mesa wellfields have generated solid results, including current operations at wellfield 7. An aggressive drill program is underway with additional results pending."
To view the Alta Mesa Wellfield maps, please visit: Alta Mesa Maps
Alta Mesa East Project Drilling Update
Exploration drilling at enCore's 5,900-acre AME Project is well underway and continues to advance with 6 drilling rigs in operation. The AME Project targets the continuation of productive roll fronts from Alta Mesa wellfields 1, 3, 3EXT, 4, 5B, and 7. Overall, exploration efforts are focused on mineralization within the designated B sands, Middle C sands (MCL & MCU in the table), Lower C sands (LCL & LCU in the table), and potentially the D sands in the northeast areas.
Initial exploration drilling is typically conducted on 400 and 500 foot centers with closer offsets in mineralized areas. Seven widely spaced east-west fences of drilling are underway for overall regional characterization. Drilling is averaging a total depth of approximately 600 feet below the surface. Exploration drilling has discovered mineralization within the Middle C sands at a depth on average between 400 and 460 feet, and within Lower C sands between 480 and 520 feet below surface. The final results are reported for the initial 17 holes, which include six holes ranging from 0.351 to 2.297 Grade Thicknesses ("GT"). GT of 0.3 is considered suitable for inclusion in a wellfield. Of the 17 holes reported, 10 were mineralized.
Significant Alta Mesa East Wellfield Results
Drill Hole |
| Dept (ft) | Grade% U3O8 | Thickness | Grade | Total |
12-9 | MCL | 442.0 | 0.118 | 2.5 | 0.294 | |
12-8 | MCL | 429.5 | 0.164 | 14.0 | 2.297 | |
12-15 | LCL | 502.0 | 0.108 | 5.0 | 0.682 | |
12-7 | MCU | 413.0 | 0.158 | 7.0 | 1.106 | |
12-7 | LCL | 500.0 | 0.068 | 3.0 | 0.205 | 1.311 |
12-21 | MCU | 415.0 | 0.152 | 4.0 | 0.705 | |
12-41 | MCU | 415.0 | 0.181 | 5.5 | 0.995 | |
15-1 | MCL | 429.5 | 0.078 | 4.5 | 0.351 | |
12-6 | MCU | 406.0 | 0.036 | 2.5 | 0.095 | |
12-6 | LCU | 494.0 | 0.027 | 2.5 | 0.068 | 0.163 |
- All reported intercepted mineralization lies within the Pliocene Goliad Formation. Holes with less than 2 ft of
0.02% U3O8 are not reported in the table. - The Company has identified four saturated (required for ISR) mineralized sandstone horizons within the Pliocene Goliad Formation lying approximately 400 to 520 feet below the surface. The water level is located approximately 180 feet below the surface.
- ISR recoverable uranium with a Grade Thickness of >0.3 is considered suitable for inclusion in a wellfield.
John M. Seeley, Ph.D., P.G., C.P.G., enCore's Vice President of Exploration and Production, and a Qualified Person under Canadian National Instrument 43-101 and
About enCore Energy Corp.
enCore Energy Corp., America's Clean Energy Company™, is committed to providing clean, reliable, and affordable uranium, primarily to fuel the U.S. nuclear energy future. enCore's team is led by industry experts with extensive knowledge and experience in all aspects of uranium ISR operations and the nuclear fuel cycle. enCore solely utilizes ISR for uranium extraction, a minimally intrusive, eco-friendly, and economically competitive approach to mineral extraction technology co-developed by enCore's leadership.
Building on enCore's demonstrated success in South Texas, future projects in enCore's planned project pipeline include the expansion of Alta Mesa to include the Alta Mesa East property, the Dewey -Burdock project in South Dakota, and the Gas Hills project in Wyoming. The Company holds other assets, including non-core assets and proprietary databases. enCore is committed to working with local communities and indigenous governments to create positive impacts from corporate projects.
Cautionary Note Regarding Forward-Looking Statements:
This press release contains "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995 and Canadian securities laws that are based on management's current expectations, assumptions, and beliefs. Forward-looking statements can often be identified by such words as "becomes," "expects," "plans," "believes," "intends," "continue," "potential," "remains," and similar expressions or variations (including negative variations) of such words and phrases, or statements that certain actions, events, or results "may," "could," or "will" be taken.
Forward-looking statements and information that are not statements of historical fact include, but are not limited to, any information relating to statements regarding future or potential extraction, the Company's prospects, the Company's decisive action plan, and any other statements regarding future expectations, beliefs, goals or prospects, statements regarding the success of current and future ISR operations, including projects in our pipeline, and our commitment to working with local communities and indigenous governments to create a positive impact from corporate projects should be considered forward-looking statements. All such forward-looking statements are not guarantees of future results and forward-looking statements are subject to important risks and uncertainties, many of which are beyond the Company's ability to control or predict, that could cause actual results to differ materially from those expressed in any forward-looking statement, including those described in greater detail in our filings with the SEC and on SEDAR+, particularly those described in our Annual Report on Form 10-K, Quarterly Reports on Form 10-Q, management's discussion and analysis, and annual information form. Forward-looking statements necessarily involve known and unknown risks, including, without limitation, risks associated with assumptions regarding project economics; discount rates; expenditures and the current cost environment; timing and schedule of the projects; general economic conditions; adverse industry events; future legislative and regulatory developments; the ability of enCore to implement its business strategies; and other risks. A number of important factors could cause actual results or events to differ materially from those indicated or implied by such forward-looking statements, including, without limitation, exploration and development risks; changes in commodity prices; access to skilled personnel; the results of exploration and development activities; extraction risks; uninsured risks; regulatory risks; defects in title; the availability of materials and equipment; timeliness of government approvals and unanticipated environmental impacts on operations; litigation risks; risks posed by the economic and political environments in which the Company operates and intends to operate; increased competition; assumptions regarding market trends and the expected demand and desires for the Company's products and proposed products; reliance on industry equipment manufacturers, suppliers and others; the failure to adequately protect intellectual property; the failure to adequately manage future growth; adverse market conditions; the failure to satisfy ongoing regulatory requirements; and factors relating to forward-looking statements listed above. Should one or more of these risks materialize, or should assumptions underlying the forward-looking statements prove incorrect, actual results may vary materially from those described herein as intended, planned, anticipated, believed, estimated, or expected. The Company assumes no obligation to update the information in this press release, except as required by law. Additional information identifying risks and uncertainties is contained in filings by the Company which are available online at www.sec.gov and www.sedarplus.ca. Forward-looking statements are provided for the purpose of providing information about the current expectations, beliefs and plans of management. Such statements may not be appropriate for other purposes and readers should not place undue reliance on these forward-looking statements, that speak only as of the date hereof, as there can be no assurance that the plans, intentions or expectations upon which they are based will occur. Such information, although considered reasonable by management at the time of preparation, may prove to be incorrect and actual results may differ materially from those anticipated. Forward-looking statements contained in this press release are expressly qualified by this cautionary statement.
Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this press release.
View original content to download multimedia:https://www.prnewswire.com/news-releases/encore-energy-extends-uranium-mineralization-3-700-feet-at-alta-mesa-east-302786548.html
SOURCE enCore Energy Corp.