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6-K

NexGen Energy Ltd. (NXE)

6-K 2024-05-29 For: 2024-05-29
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Added on April 08, 2026

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549


___________________

Form 6-K


REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE13a-16 OR 15d-16 OF THE SECURITIES EXCHANGE ACT OF 1934


For the month of May 2024


Commission File Number 001-38072


___________________

NexGen Energy Ltd.

(Translation of registrant's name into English)

Suite 3150, 1021 - West Hastings Street

Vancouver, B.C., Canada V6E 0C3

(Address of principal executive offices)

___________________

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.)

Form 20-F ☐ Form 40-F ☑

INCORPORATION BYREFERENCE

Exhibit 99.1 to this Report on Form 6-K is hereby incorporated by reference as Exhibits to the Registration Statement on Form F-10 of NexGen Energy Ltd. (File No. 333-266575).

EXHIBIT INDEX


Exhibit Description
99.1 News Release dated May 29, 2024


SIGNATURES


Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized, on May 29, 2024.

NEXGEN ENERGY LTD.
By: /s/<br> Benjamin Salter
Name:<br> Benjamin Salter
Title:<br> Chief Financial Officer

Exhibit99.1


NexGen Announces Additional Mineralization Discovered at Patterson Corridor East, Assays from RK-24-183 and Commencement of Expanded Summer Exploration Program

VANCOUVER, BC, May 29, 2024 /CNW/ - NexGen EnergyLtd. ("NexGen" or the "Company") (TSX: NXE) (NYSE: NXE) (ASX: NXG) is pleased to announce drilling at Patterson Corridor East ("PCE") has intersected mineralization in RK-24-193 over 67.5 metres (m) (383.5 to 451 m) across various intervals including up to 7,500 cps over 1.5 m (Figures 1 to 4, Table 1). RK-24-193 is located 275 m southwest along strike of RK-24-183 (discovery hole) and at approximately the same depth below surface.

In addition, assays from RK-24-183 confirm high grade uranium veins across a 20 m interval with several intersections totalling 13.5 m at 0.78% U3O8 including 0.5 m (348.0 to 348.5 m) at 10% U3O8 and another 0.5 m (356.5 to 357 m) at 6.23% U3O8 (Table 2). For reference, the Arrow discovery hole RK-14-21 assayed 5.75 m at 0.37% U3O8, including 0.25 m at 5.77% U3O8.

Collectively, these results of multiple narrow intersections of mineralization in two holes represent a current strike length of 275 m at PCE, suggesting a potential upper edge to mineralization highly analogous to the early holes at Arrow (Figure 1). Consequently, the summer drilling program has been expanded to 4 drill rigs and targeting 22,000 m at PCE (Figure 2).

Figure 1: Schematic cross-section showing early holes at Arrow and PCE with relative depths of mineralization; follow up will primarily focus on blue shaded area down dip and along strike (CNW Group/NexGen Energy Ltd.)

Figure 2: PCE showing with area of interest for further exploration outlined; 2024 drillholes shown as green dots, interpreted primary structures are represented by dashed lines (CNW Group/NexGen Energy Ltd.)

Leigh Curyer, Chief Executive Officer, commented: "Our team has assessed the geological similarities between RK-24-183 and RK-24-193 and the upper areas of Arrow, which indicates the high prospectivity of an additional mineralized system 3.5 km east of Arrow. Consequently, the growing potential of this latest discovery will drive the focus of the summer exploration program to determine the potential size and extent of mineralization. Efficient and bold testing of the overall system is the first priority.

It is an exciting time at NexGen with the Company recently advancing the Federal Environmental Assessment process for the Rook I Project through the submission of responses to the remaining Information Requests, as well as advancing detailed engineering and exploring a new discovery in parallel."

RK-24-193

This new hole intersected elevated radioactivity over 67.5 m (Table 1) with mineralization style and alteration intensity strongly resembling up dip projections that were seen during the early discovery holes at Arrow.

In addition, drill results further south in RK-24-180, RK-24-192, and RK-24-194 indicate a possible repetition of prospective structure that correlates well with the local gravity low, a typical indicator of potential hydrothermal alteration. Numerous brittle reactivated structures and associated intense alteration within these three drillholes highlight a potential supplementary uranium-bearing trend within the same system. This has doubled the size ofthe system to be tested this summer with an approximate extent of 1.5 km long by 1.2 km wide (Figure 2). Potential remains in most directions within this highly prospective area.

Figure 3: Elevated radioactivity from RK-24-193 with maximum values shown for mineralized veins outlined in yellow. Replacement style mineralization is similar to the discovery hole, RK-24-183, with a notable upgrade of alteration intensity that included m-scale dravitic breccia. (CNW Group/NexGen Energy Ltd.)

Figure 4: Hydrothermal hematite, argillization, and uraninite blebs at 419.7 m with a maximum of 7,500 cps (CNW Group/NexGen Energy Ltd.)

Summer Drilling

Focus of the expanded summer program is on assessing the broad hydrothermal system at PCE (Figure 2) and expanding the mineralized footprint. Robust analysis and interpretation processes will be utilized to actively assess potential while efficiently testing priority targets.

Over 22,000 m of diamond drilling is planned for the PCE system utilizing four drill rigs. This represents a near tripling of drilling from the winter to summer program. Optionality exists with planning underway to increase the total based on drill results. Targets will primarily be tested between 400 and 700 m below surface to test potential depth extensions, as is present at Arrow. Summer drilling will significantly advance the investigation of PCE while highlighting geological relationships that can be applied elsewhere within NexGen's exploration portfolio (Figure 5).

Figure 5: PCE and analogs, based on geological and geophysical similarities, shown as green shapes (CNW Group/NexGen Energy Ltd.)

Table 1: 2024 Spectrometer results to date

Drillhole Unconformity Depth (m) Handheld Spectrometer Results (RS-125)
Hole ID Azimuth Dip Total Depth (m) From (m) To (m) Width (m) CPS Range
RK-24-179 310 -70 462 138 141 141.5 0.5 <500 - 1,100
150 151 1 <500
154 155 1 <500 - 560
156.5 157 0.5 <500
RK-24-180 310 -70 366 102.3 No Significant Intersections
RK-24-181 310 -70 573 115.7 191.5 192 0.5 <500
RK-24-182 310 -70 411 N/A No Significant Intersections
RK-24-183 310 -70 501 125.3 347.5 350 2.5 500 - 52,000
350 351 1 <500 - 1,200
351 354 3 700 - 16,200
354 355 1 <500 - 570
355 358 3 1,300 - >61,000
358 358.5 0.5 790 - 2,100
358.5 362.5 4 <500 - 680
362.5 363 0.5 <500 - 1,070
363 365 2 <500
365 365.5 0.5 800 - 7,700
365.5 367 1.5 <500
367 367.5 0.5 <500 - 28,000
RK-24-184 280 -70 534 137.7 No Significant Intersections
RK-24-185 310 -70 396 N/A 312.5 313.5 1 <500
335 335.5 0.5 <500
RK-24-186 310 -70 440 128.2 181.5 182 0.5 <500 - 700
211 212 1 <500 - 600
RK-24-187 310 -70 501 116.8 163 164.5 1.5 <500
191 191.5 0.5 <500 - 830
RK-24-188 310 -70 510 120.5 338 340 2 <500
410.5 412.5 2 <500
418.5 421.5 3 <500
RK-24-189 310 -70 537 130 No Significant Intersections
RK-24-190 310 -70 547 123.8 No Significant Intersections
RK-24-191 310 -70 402 N/A 266 267 1 <500 - 700
RK-24-192 310 -70 444 108.5 No Significant Intersections
RK-24-193 310 -70 621 N/A 383.5 384.5 1 <500 - 820
389.5 390 0.5 <500 - 1,330
393.5 394 0.5 <500
401.5 402.5 1 580 - 640
413 413.5 0.5 <500
417.5 418.5 1 <500
419 420.5 1.5 <500 - 7,500
423 425 2 <500 - 700
426.5 428 1.5 <500 - 1,100
428.5 429 0.5 <500
430 430.5 0.5 <500 - 3,100
432 434 2 <500 - 2,850
435 437 2 <500
442 443 1 <500 - 510
449 451 2 <500 - 2,700
RK-24-194 310 -70 420 98.8 190.5 191 0.5 <500
  • All depths and intervals are meters downhole, true thicknessesare yet to be determined.
  • "Off-scale" refers to >61,000 cps total readingsby gamma spectrometer type RS-125.
  • Unconformity of 'N/A' denotes a lack of visible contact betweenAthabasca sandstone and basement rock.
  • Maximum internal dilution 2.0 m downhole.
  • Minimum thickness of 0.5 m downhole.
  • All depths and intervals are metres downhole, true thicknessesare yet to be determined. Resource modelling in conjunction with an updated mineral resource estimate is required before true thicknessescan be determined.

Table 2: 2024 Assay results to date

Drillhole Unconformity Depth (m) SRC Geoanalytical Results (Cutoff 0.01%)
Hole ID Azimuth Dip Total Depth (m) From (m) To (m) Width (m) U3O8 (wt%)
RK-24-179 310 -70 462 138 No Significant Intersections
RK-24-180 310 -70 366 102.3 No Significant Intersections
RK-24-181 310 -70 573 115.7 No Significant Intersections
RK-24-182 310 -70 411 N/A No Significant Intersections
RK-24-183 310 -70 501 125.3 347.5 361 13.5 0.78
including 348 348.5 0.5 10.0
including 356.5 357 0.5 6.23
362.5 363 0.5 0.07
365 365.5 0.5 0.55
367 367.5 0.5 1.42
369.5 370 0.5 0.01
RK-24-184 280 -70 534 137.7 No Significant Intersections
RK-24-185 310 -70 396 N/A 312.5 313.5 1 0.01
335 335.5 0.5 0.05
RK-24-186 310 -70 440 128.2 No Significant Intersections
RK-24-187 310 -70 501 116.8 No Significant Intersections
RK-24-188 310 -70 510 120.5 412 412.5 0.5 0.02
418.5 419 0.5 0.01
419.5 420 0.5 0.01
422.5 424 1.5 0.01
RK-24-189 310 -70 537 130 No Significant Intersections
RK-24-190 310 -70 547 123.8 No Significant Intersections
RK-24-191 310 -70 402 N/A No Significant Intersections
RK-24-192 310 -70 444 108.5 No Significant Intersections
RK-24-193 310 -70 621 N/A Assays Pending
RK-24-194 310 -70 420 98.8 No Significant Intersections
  • All depths and intervals are meters downhole, true thicknessesare yet to be determined.
  • Unconformity of 'N/A' denotes a lack of visible contact betweenAthabasca sandstone and basement rock.
  • Maximum internal dilution 2.0 m downhole.
  • Minimum thickness of 0.5 m downhole.
  • Cutoff grade 0.01% U3O8.
  • All depths and intervals are metres downhole, true thicknessesare yet to be determined. Resource modelling in conjunction with an updated mineral resource estimate is required before true thicknessescan be determined.

About NexGen

NexGen Energy is a Canadian company focused on delivering clean energy fuel for the future. The Company's flagship Rook I Project is being optimally developed into the largest low cost producing uranium mine globally, incorporating the most elite standards in environmental and social governance. The Rook I Project is supported by a NI 43-101 compliant Feasibility Study which outlines the elite environmental performance and industry leading economics. NexGen is led by a team of experienced uranium and mining industry professionals with expertise across the entire mining life cycle, including exploration, financing, project engineering and construction, operations, and closure. NexGen is leveraging its proven experience to deliver a Project that leads the entire mining industry socially, technically, and environmentally. The Project and prospective portfolio in northern Saskatchewan will provide generational long-term economic, environmental, and social benefits for Saskatchewan, Canada, and the world.

NexGen is listed on the Toronto Stock Exchange, the New York Stock Exchange under the ticker symbol "NXE" and on the Australian Securities Exchange under the ticker symbol "NXG" providing access to global investors to participate in NexGen's mission of solving three major global challenges in decarbonization, energy security and access to power. The Company is headquartered in Vancouver, British Columbia, with its primary operations office in Saskatoon, Saskatchewan.

Technical Disclosure*

All technical information in this news releasehas been reviewed and approved by Jason Craven, NexGen's Manager, Exploration, a qualified person under National Instrument 43-101.

Natural gamma radiation in drill core reportedin this news release was measured in counts per second (cps) using a Radiation Solutions Inc. RS-125 gamma spectrometer. The reader iscautioned that total count gamma readings may not be directly or uniformly related to uranium grades of the rock sample measured; theyshould be used only as a preliminary indication of the presence of radioactive minerals.

A technical report in respect of the FS is filedon SEDAR ( www.sedar.com ) and EDGAR (www.sec.gov/edgar.shtml ) and is available for review on NexGen Energy's website(www.nexgenenergy.ca ).

Cautionary Note to U.S. Investors

This news release includes Mineral Reserves andMineral Resources classification terms that comply with reporting standards in Canada and the Mineral Reserves and the Mineral Resourcesestimates are made in accordance with NI 43-101. NI 43-101 is a rule developed by the Canadian Securities Administrators that establishesstandards for all public disclosure an issuer makes of scientific and technical information concerning mineral projects. These standardsdiffer from the requirements of the Securities and Exchange Commission ("SEC") set by the SEC's rules that are applicable todomestic United States reporting companies. Consequently, Mineral Reserves and Mineral Resources information included in this news releaseis not comparable to similar information that would generally be disclosed by domestic U.S. reporting companies subject to the reportingand disclosure requirements of the SEC Accordingly, information concerning mineral deposits set forth herein may not be comparable withinformation made public by companies that report in accordance with U.S. standards.

Forward-Looking Information

*The information contained herein contains "forward-lookingstatements" within the meaning of applicable United States securities laws and regulations and "forward-looking information"within the meaning of applicable Canadian securities legislation. "Forward-looking information" includes, but is not limitedto, statements with respect to mineral reserve and mineral resource estimates, the 2021 Arrow Deposit, Rook I Project and estimates ofuranium production, grade and long-term average uranium prices, anticipated effects of completed drill results on the Rook I Project,planned work programs, completion of further site investigations and engineering work to support basic engineering of the project andexpected outcomes. Generally, but not always, forward-looking information and statements can be identified by the use of words such as"plans", "expects", "is expected", "budget", "scheduled", "estimates", "forecasts","intends", "anticipates", or "believes" or the negative connotation thereof or variations of such wordsand phrases or state that certain actions, events or results "may", "could", "would", "might"or "will be taken", "occur" or "be achieved" or the negative connotation thereof.*Statements relating to "mineral resources" are deemed to be forward-looking information, as they involve the implied assessment that, based on certain estimates and assumptions, the mineral resources described can be profitably produced in the future.

Forward-looking information and statements arebased on the then current expectations, beliefs, assumptions, estimates and forecasts about NexGen's business and the industry and marketsin which it operates. Forward-looking information and statements are made based upon numerous assumptions, including among others, thatthe mineral reserve and resources estimates and the key assumptions and parameters on which such estimates are based are as set out inthis news release and the technical report for the property , the results of planned exploration activities are as anticipated, the priceand market supply of uranium, the cost of planned exploration activities, that financing will be available if and when needed and on reasonableterms, that third party contractors, equipment, supplies and governmental and other approvals required to conduct NexGen's planned explorationactivities will be available on reasonable terms and in a timely manner and that general business and economic conditions will not changein a material adverse manner. Although the assumptions made by the Company in providing forward looking information or making forwardlooking statements are considered reasonable by management at the time, there can be no assurance that such assumptions will prove tobe accurate in the future.

Forward-looking information and statements alsoinvolve known and unknown risks and uncertainties and other factors, which may cause actual results, performances and achievements ofNexGen to differ materially from any projections of results, performances and achievements of NexGen expressed or implied by such forward-lookinginformation or statements, including, among others, the existence of negative operating cash flow and dependence on third party financing,uncertainty of the availability of additional financing, the risk that pending assay results will not confirm previously announced preliminaryresults, conclusions of economic valuations, the risk that actual results of exploration activities will be different than anticipated,the cost of labour, equipment or materials will increase more than expected, that the future price of uranium will decline or otherwisenot rise to an economic level, the appeal of alternate sources of energy to uranium-produced energy, that the Canadian dollar will strengthenagainst the U.S. dollar, that mineral resources and reserves are not as estimated, that actual costs or actual results of reclamationactivities are greater than expected, that changes in project parameters and plans continue to be refined and may result in increasedcosts, of unexpected variations in mineral resources and reserves, grade or recovery rates or other risks generally associated with mining,unanticipated delays in obtaining governmental, regulatory or First Nations approvals, risks related to First Nations title and consultation,reliance upon key management and other personnel, deficiencies in the Company's title to its properties, uninsurable risks, failure tomanage conflicts of interest, failure to obtain or maintain required permits and licences, risks related to changes in laws, regulations,policy and public perception, as well as those factors or other risks as more fully described in NexGen's Annual Information Form datedFebruary 24, 2023 filed with the securities commissions of all of the provinces of Canada except Quebec and in NexGen's 40-F filed withthe United States Securities and Exchange Commission, which are available on SEDAR at www.sedar.com and Edgar at www.sec.gov .

Although the Company has attempted to identifyimportant factors that could cause actual results to differ materially from those contained in the forward-looking information or statementsor implied by forward-looking information or statements, there may be other factors that cause results not to be as anticipated, estimatedor intended. Readers are cautioned not to place undue reliance on forward-looking information or statements due to the inherent uncertaintythereof.

There can be no assurance that forward-lookinginformation and statements will prove to be accurate, as actual results and future events could differ materially from those anticipated,estimated or intended. Accordingly, readers should not place undue reliance on forward-looking statements or information. The Companyundertakes no obligation to update or reissue forward-looking information as a result of new information or events except as requiredby applicable securities laws.

View original content to download multimedia:https://www.prnewswire.com/news-releases/nexgen-announces-additional-mineralization-discovered-at-patterson-corridor-east-assays-from-rk-24-183-and-commencement-of-expanded-summer-exploration-program-302157942.html

SOURCE NexGen Energy Ltd.

View original content to download multimedia: http://www.newswire.ca/en/releases/archive/May2024/29/c9664.html

%CIK: 0001698535

For further information: Leigh Curyer, Chief Executive Officer, NexGen Energy Ltd., +1 604 428 4112, [email protected], www.nexgenenergy.ca; Travis McPherson, Chief Commercial Officer, NexGen Energy Ltd., +1 604 428 4112, [email protected], www.nexgenenergy.ca; Monica Kras, Vice President, Corporate Development, +44 7307 191933, [email protected], www.nexgenenergy.ca

CO: NexGen Energy Ltd.

CNW 06:54e 29-MAY-24