Lion Copper Corp. Completes S-K 1300 Technical Report Summary for Bear Copper Deposit

Bear's resource estimate includes 6.71 billion pounds of indicated copper and 8.77 billion pounds of inferred copper.

Rhea-AI Summary

Lion Copper (NASDAQ: LCU; CSE: LCU) completed an S-K 1300 Technical Report Summary supporting its Bear Copper Deposit resource estimate in Nevada. The report provides technical documentation under U.S. mineral disclosure standards and complements the NI 43-101 report filed September 14, 2026.

Resources current as of October 31, 2026 include 6.71 billion pounds of indicated copper in 1,064 million tonnes grading 0.29%, and 8.77 billion pounds of inferred copper in 1,770 million tonnes grading 0.22%. Both use a 0.10% copper cut-off grade. Lion targets publication of the Yerington Copper Project's definitive feasibility study in the first quarter of 2027. Bear's potential use of planned Yerington infrastructure requires further technical evaluation and depends on its availability and suitability. Lion controls most property required for Bear's future development, with acquisitions ongoing.

4 points · 0 major

MixediHow this balance works

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It reads the document as published, with the same rules for every company, and it does not look at what the market expected or at how the stock traded, so a point can be objectively good on a day the stock falls.

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0 major · 2 points

Hollow bars mark forward-looking points. How the balance works

Positive

• Moderate pointIndicated resource: 6.71 billion pounds of copper in 1,064 million tonnes grading 0.29%.
• Moderate pointInferred resource: 8.77 billion pounds of copper in 1,770 million tonnes grading 0.22%.
• Minor pointS-K 1300 technical report completed, supporting Bear resource disclosure under U.S. reporting standards.
• Minor point. Forward-looking: it has not happened yet and may not happen.Yerington definitive feasibility study completion and publication targeted for the first quarter of 2027.

Negative

• Moderate point. Forward-looking: it has not happened yet and may not happen.Bear infrastructure sharing requires further technical evaluation and depends on planned Yerington infrastructure's availability and suitability.
• Moderate pointBear property acquisitions remain ongoing; Lion controls most property required for future development.

Key Figures

Indicated contained copper: 6.71 billion pounds Inferred contained copper: 8.77 billion pounds DFS publication target: First quarter of 2027

Indicated contained copper

6.71 billion pounds

Previously announced Bear MRE; 1,064 million tonnes at 0.29% Cu

Inferred contained copper

8.77 billion pounds

Previously announced Bear MRE; 1,770 million tonnes at 0.22% Cu

DFS publication target

First quarter of 2027

Yerington Copper Project

Key Terms

s-k 1300, ni 43-101, cut-off grade, indicated mineral resource, +1 more

5 terms

s-k 1300 regulatory

"prepared in accordance with Subpart 1300 of Regulation S-K"

Regulation S-K Item 1300 is a U.S. securities disclosure rule that requires public companies to report how they manage cybersecurity risks and to promptly disclose material cyber incidents. Think of it as a requirement to tell investors both the company’s “cyber health” plan and any major break-ins, similar to a homeowner explaining their alarm system and alerting neighbors after a burglary. This helps investors assess operational risk and potential financial or reputational impact.

ni 43-101 regulatory

"filing of the NI 43-101 Technical Report"

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.

cut-off grade technical

"a break-even economic cut-off grade of 0.10% Cu"

The cut-off grade is the minimum concentration of a mineral in rock that makes extraction and processing economically worthwhile; material below that level is treated as waste. It sets the boundary between ore and waste and directly affects reported reserves, projected mine life, and expected profits. Think of it like deciding which fruit on a tree is worth picking after accounting for the time and cost to harvest — raising or lowering that threshold can change how much “good” product a project appears to have.

indicated mineral resource technical

"an indicated mineral resource of 6.71 billion pounds"

A quantified portion of a mineral deposit where geological evidence and sampling give a reasonable level of confidence in the quantity, grade and continuity of the minerals — think of it as a well-marked stretch on a treasure map rather than a vague hunch. It matters to investors because it provides a credible estimate that can be used for preliminary economic studies and valuation, reducing uncertainty compared with less-certain resource categories.

inferred mineral resource technical

"an inferred mineral resource of 8.77 billion pounds"

An inferred mineral resource is an early-stage estimate of the amount and grade of minerals in the ground based on limited sampling and geological evidence; think of it as a rough sketch of where valuable material might be, rather than a detailed blueprint. It matters to investors because it signals potential upside but carries high uncertainty—further drilling and study are needed before it can support mine planning or reliable economic forecasts.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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YERINGTON, NV / ACCESS Newswire / November 11, 2026 / Lion Copper Corp. (NASDAQ:LCU)(CSE:LCU) ("Lion" or the "Company") is pleased to announce the completion of its Technical Report Summary ("TRS") for the Company's Bear Copper Deposit, located within the Yerington Copper District in Lyon County, Nevada.

The TRS was prepared in accordance with Subpart 1300 of Regulation S-K ("S-K 1300"), the mineral property disclosure requirements of the U.S. Securities and Exchange Commission ("SEC"), and supports the previously announced Bear Mineral Resource Estimate ("MRE"). It follows the Company's filing of the NI 43-101 Technical Report on September 14, 2026.

The Bear MRE, previously announced on August 4, 2026, comprises an indicated mineral resource of 6.71 billion pounds of contained copper (1,064 million tonnes grading 0.29% Cu) and an inferred mineral resource of 8.77 billion pounds of contained copper (1,770 million tonnes grading 0.22% Cu).

John Banning, Chief Executive Officer of Lion Copper Corp., commented:

"The completion of the S-K 1300 Technical Report Summary for Bear represents another important milestone for Lion, providing the technical foundation for disclosing this substantial copper resource under U.S. reporting standards.

"With an indicated resource of 6.71 billion pounds of copper and an inferred resource of 8.77 billion pounds of copper, Bear significantly expands our copper resource base and reinforces the long-term development potential of the Yerington Copper District.

"Our immediate priority remains advancing the Yerington Copper Project through a definitive feasibility study and permitting, with completion and publication of the DFS targeted for the first quarter of 2027. Bear provides additional longer-term development opportunities, including the potential to leverage infrastructure contemplated for Yerington."

Bear Mineral Resource Estimate

The Bear Deposit is contiguous with Lion's Yerington Copper Project in Lyon County's Mason Valley, Nevada, and represents a substantial additional copper resource within the Company's broader district-scale development strategy.

The S-K 1300 TRS provides supporting geological, drilling and mineral resource estimation information, including the assumptions underlying the determination of reasonable prospects for economic extraction.

Lion is advancing the Yerington Copper Project through a definitive feasibility study and permitting, supported by its strategic partnership with Nuton LLC, a Rio Tinto venture. The potential for Bear to use infrastructure planned for Yerington is subject to further technical evaluation and depends on the availability and suitability of that infrastructure.

Table 1: Bear Deposit Mineral Resource Estimate

Mineral Resource Classification	Cut-off Grade (Cu%)	Tonnes (Mt)	Cu Grade (%)	Contained Copper (billion lbs)
Indicated Sulfide	0.10	1,064	0.29	6.71
Inferred Sulfide	0.10	1,770	0.22	8.77

Notes:

1. The mineral resources are reported in situ and are current as of October 31, 2026.
2. AGP is responsible for this mineral resource estimate.
3. The mineral resources are reported within a conceptual pit shell that used the following input parameters: a break- even economic cut-off grade of 0.10% Cu for sulfide material based on assumptions of a net copper price of US$4.22/lb (after smelting, refining, transportation and royalty charges) and 75% recovery in sulfide material, base mining costs of US$2.22/t and processing plus G&A costs of US$4.94/t.
4. The mineral resource estimates were classified in accordance with the definitions in S-K 1300.
5. AGP is not aware of any known environmental, permitting, legal, taxation, socio-political, financial or other relevant issues beyond those discussed in the TRS that could materially affect the mineral resource estimate.
6. The Company controls most of the property required for the future development of the Bear Deposit and remains engaged in ongoing property acquisitions.
7. Calculations used metric units (meters, tonnes). Metal contents in the above table are presented in percent, pounds and tonnes. Metric tonnages and pounds were rounded, and any discrepancies in total amounts are due to rounding errors.

S-K 1300 Technical Report Summary

The completion of the Bear S-K 1300 TRS provides technical documentation prepared in accordance with the SEC's mineral property disclosure requirements applicable to U.S. reporting companies.

The TRS complements the previously filed NI 43-101 Technical Report and supports the Company's disclosure of the Bear mineral resource under applicable U.S. reporting standards.

The TRS is available on EDGAR as Exhibit 96.1 to the Company's Form 10-Q for the quarter ended September 30, 2026. The Company's website is www.LionCG.com.

Qualified Persons

The S-K 1300 Technical Report Summary was prepared by AGP Mining Consultants Inc. and Samuel Engineering, Inc., each of which acts as a qualified person within the meaning of S-K 1300, as permitted for third-party firms.

The scientific and technical information contained in this news release has been reviewed and approved by John Banning, MMSA QP, Chief Executive Officer of Lion and a qualified person as defined under NI 43-101 and S-K 1300.

About Lion Copper Corp.

Lion Copper Corp. is a North American copper development company advancing its flagship Yerington Copper Project in Nevada toward production, supported by strategic, nondilutive funding from Nuton LLC, a Rio Tinto venture.

The Yerington Copper Project hosts 2.14 billion pounds of proven and probable mineral reserves and is projected to produce approximately 120 million pounds of refined LME Grade A copper cathode annually over an estimated 12-year mine life, supplying the domestic U.S. market, as set out in the Company's technical report dated August 26, 2025, with an effective date of May 31, 2025, for a pre-feasibility study prepared pursuant to NI 43-101, available on the Company's website and at www.sedarplus.ca.

On behalf of the Board of Directors,

John Banning
Chief Executive Officer & Director
Lion Copper Corp.

(775) 463-9600
info@lioncg.com

Forward-Looking Statements

This news release contains forward-looking statements and forward-looking information within the meaning of applicable Canadian securities laws and applicable United States securities laws, including the safe harbor provisions of the United States Private Securities Litigation Reform Act of 1995.

Forward-looking statements in this release include the target to complete and publish the Yerington definitive feasibility study (DFS) in the first quarter of 2027, the advancement of Yerington permitting and continued support under the Nuton earn-in arrangement, the potential for future development of Bear and use of planned Yerington infrastructure and Yerington's projected average annual copper cathode production and mine life. The assumptions supporting the Bear mineral resource estimate and any expectations about future resource upgrading or conversion also involve forward-looking information.

Forward-looking statements are generally identifiable by words such as "may," "will," "expect," "intend," "plan," "believe," "anticipate," "estimate," "potential," "could," "should" and similar expressions. Such statements are based on assumptions management believes to be reasonable as of the date of this news release, including assumptions concerning mineral resource estimates, geological and metallurgical characteristics, copper prices, operating and capital costs, regulatory and permitting timelines, access to infrastructure, availability of financing and the Company's ability to obtain or maintain necessary property interests and authorizations.

Forward-looking statements are subject to known and unknown risks, uncertainties and other factors that may cause actual results, performance or achievements to differ materially from those expressed or implied. These include, without limitation, uncertainty inherent in mineral resource estimation, the higher degree of uncertainty associated with inferred mineral resources, the potential inability to convert mineral resources to mineral reserves, changes in commodity prices, metallurgical recoveries, capital and operating costs, availability of equipment, labor and services, permitting and environmental matters, title and property access, financing availability, contractual arrangements and general economic, political and industry conditions.

Mineral resources that are not mineral reserves do not have demonstrated economic viability. Inferred mineral resources have a great amount of uncertainty as to their existence and as to whether they can be mined economically. It cannot be assumed that all or any part of an inferred mineral resource will be upgraded to an indicated or measured mineral resource as a result of continued exploration.

Readers are cautioned not to place undue reliance on forward-looking statements. The Company undertakes no obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by applicable law.

SOURCE: Lion Copper Corp.

View the original press release on ACCESS Newswire

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What copper resources does Lion Copper report at Bear?

Bear has 6.71 billion pounds of indicated copper and 8.77 billion pounds of inferred copper, current as of October 31, 2026. The indicated resource comprises 1,064 million tonnes grading 0.29% copper; the inferred resource comprises 1,770 million tonnes grading 0.22%. Both classifications use a 0.10% copper cut-off grade.

When does Lion Copper expect to complete the Yerington feasibility study?

Lion targets completion and publication of the Yerington Copper Project's definitive feasibility study in the first quarter of 2027. The company is advancing the project through the study and permitting, supported by its partnership with Nuton, a Rio Tinto venture.

What economic assumptions underpin Lion Copper's Bear resource estimate?

Bear's conceptual pit shell uses a US$4.22-per-pound net copper price and 75% sulfide recovery. The price is after smelting, refining, transportation and royalty charges. Other inputs include base mining costs of US$2.22 per tonne and processing plus general and administrative costs of US$4.94 per tonne.