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Highlander Silver and BEAR Creek Mining Combine to Create Leading Growth Company IN the Silver Sector

Mergers & Acquisitions

HIGHLANDER SILVER AND BEAR CREEK MINING COMBINE TO CREATE

LEADING GROWTH COMPANY IN THE SILVER SECTOR

All monetary amounts are expressed in Canadian dollars, unless otherwise indicated.

Toronto, Ontario, December 19, 2025 – Highlander Silver Corp. (TSX: HSLV) (“Highlander

Silver”) and Bear Creek Mining Corporation (TSXV: BCM) (OTCQX: BCEKF) (BVL: BCM) (“Bear

Creek”) are pleased to announce that they have entered into a definitive agreement (the

“Arrangement Agreement”) whereby Highlander Silver and Bear Creek have agreed to combine

their respective businesses by way of a plan of arrangement under the Business Corporations Act

(British Columbia) (the “Arrangement”). The combined company will be managed by the Highlander

Silver executive team, supported by key Bear Creek personnel.

Corporate Highlights

 Creates a leading growth company in the silver sector by adding the Corani silver project

(the “Corani Project”), one of the largest primary silver deposits in the world, to a foundation

supported by the bonanza grade San Luis gold-silver project

 Leading management team with proven expertise in delivering rapid growth while advancing

projects in South America in partnership with community and government stakeholders

 Combined company’s strong shareholder base includes global institutions and strategic

shareholders, Augusta Capital, the Lundin family and Eric Sprott; Highlander’s balance

sheet remains well-capitalized and debt free post-transaction

Flagship Assets

San Luis Gold-Silver Project – Ancash, Peru

 Hosts Indicated Mineral Resources of 356 koz gold (“Au”) at 24.4 g/t Au and 8.4 Moz silver

(“Ag”) at 579 g/t Ag, ranking among the 10 highest grade projects globally in both gold and

silver categories

 Rapidly growing Bonita zone discovery has returned robust drilling results, recently

including 23.9m of 20.82 g/t Au and 31.53 g/t Ag (BOD-023); 23.6m of 15.56 g/t Au and

74.49 g/t Ag (BOD-021); 23.4m of 11.70 g/t Au and 26.10 g/t Ag (BOD-022)1

 Geophysics and drilling plans to be released in the New Year and set the stage for the next

1 See press releases: ‘Highlander Silver Reports New Discovery of Kusy Zone at Bonita Returning Highest

Grades to Date: 23.6m at 15.56 g/t Gold and 74.49 g/t Silver’ – October 6, 2025 and ‘Highlander Silver Reports

Record Results and New Discovery: 23.9m at 20.82 g/t Gold and 31.53 g/t Silver and 23.4m at 11.70 g/t Gold and

26.10 g/t Silver in Shallow Drilling’ – December 1, 2025

phase of growth at Bonita while permitting advances

Corani Project – Puno, Peru

 One of the largest primary silver deposits in the world, with permitting well advanced and

supporting community agreements in place

 2019 Feasibility Study (as defined below) using US$18/oz silver: US$532m NPV5% and

22.9% after-tax IRR; 9.6 Moz average annual silver production over LOM at AISC 2 of

US$4.55/oz silver

 Proven & Probable reserves of 229 Moz silver; measured and indicated mineral resources

(inclusive of mineral reserves) of 323 Moz silver, and additional inferred mineral resources

of 84 Moz silver

 Growth opportunity that has not seen exploration drilling in the last decade with exploration

opportunities to the north, northeast and south, and a related gold zone and porphyry target

to pursue

Mercedes Gold-Silver Mine – Sonora, Mexico

 Operating underground mine with underutilized 2,000 tpd processing plant and associated

infrastructure; 2024 production of 40,220 oz gold and 217,676 oz silver

 Large and highly prospective land package of 69,284 ha within prolific belt; main corridor of

veins open under cover for over 6km of largely untested prospective strike, with numerous

other targets to pursue across multiple styles of mineralization

 Represents an attractive gold asset with significant upside that Highlander will seek to align

with a well-funded responsible operator which can prioritize investing in its long-term future

Daniel Earle, President and CEO of Highlander Silver, commented, “I am delighted to present this

transaction to our shareholders, which allows us to scale into the emerging structural bull market

for silver beyond our bonanza grade San Luis project. The Corani Project is already one of the

largest primary silver deposits in the world yet still offers robust growth and discovery potential. To

Bear Creek Shareholders, I’d like to extend a warm welcome and commit to honour the legacy of

your company as a trailblazer in Peruvian silver exploration by surfacing the full potential of the

Corani Project within our portfolio.”

Eric Caba, President and CEO of Bear Creek , commented, “I am extremely excited to realize the

combination of Bear Creek with Highlander Silver, which will result in a robust, silver-focused

enterprise with a significant mineral inventory, a clean balance sheet and a clear path to growth

lead by our flagship Corani Project.”

2 Non-GAAP Financial Measure, see “Non-GAAP Financial Measures”

Catherine McLeod-Seltzer, Chair, and Peter Mitchell, Special Committee Chair of Bear Creek ,

respectively, add, “The Highlander Arrangement is a comprehensive solution that first and foremost

provides exciting future opportunities for Bear Creek Shareholders to realize value from the Corani

Project and participate in Highlander’s San Luis project, and secondly provides an elegant solution

that eliminates their substantial exposure to Bear Creek’s liquidity and debt issues. After a thorough

and disciplined strategic review process, engaging with numerous potential counterparties and

carefully considering multiple alternative offers, we are extremely pleased to have negotiated the

Arrangement with Highlander Silver, which provides the best path forward for our shareholders.”

Bill Heissenbuttel, President and CEO of Royal Gold, commented, “With this transaction, Corani is

moving into the hands of a well-capitalized company with a management team that has experience

advancing large-scale projects in Latin America. I am pleased to see this transaction materialize,

as it increases Royal Gold’s exposure to the potentially large-scale and long-life Corani Project,

and also furthers our objective of simplifying the portfolio we acquired with Sandstorm Gold by

converting non-core assets into interests that fit our business model.”

Bear Creek Strategic Review and Benefits of the Arrangement to Bear Creek Shareholders

Bear Creek undertook a formal comprehensive and thorough strategic review process (the “Strategic

Review”) over the past nine months to explore and evaluate the strategic and financial options

available to Bear Creek with the ultimate view of restoring balance sheet strength and enhancing value

for shareholders. Bear Creek’s Special Committee, with the assistance of its legal and financial

advisors, engaged with more than 100 parties and carried out an exhaustive analysis of multiple

incoming proposals including joint venture, asset and corporate transactions. The Special Committee

determined the Highlander Arrangement to be the superior offer in the best interests of the

shareholders of Bear Creek (the “Bear Creek Shareholders”).

Benefits to Bear Creek Shareholders

 Continued Exposure to the Corani Project: Creates a near-term and executable pathway to

construction and operation of the Corani Project – one of the world’s largest fully permitted silver

polymetallic deposits with 229 million ounces of silver and 4.4 billion pounds combined lead and

zinc in proven and probable mineral reserves – unlocking long-underappreciated value for Bear

Creek Shareholders.

 Complementary Assets: Combines the Corani Project’s substantial silver mineral reserves with

Highlander’s rapidly-advancing San Luis gold-silver development property to establish a top tier

precious and base metal inventory and an organic pipeline of projects in Peru providing near and

long term growth.

 Stabilizes Bear Creek’s Working Capital:Private Placement (as defined below) in the common

shares of Bear Creek (“Bear Creek Shares”) by Highlander Silver provides immediate liquidity and

demonstrates Highlander Silver’s confidence in the Arrangement.

 Sound Financial Footing: Participation in a financially robust pro-forma company with a strong cash

position, no debt, and a strong group of supportive shareholders including the Augusta Group, the

Lundin family and Eric Sprott. The Arrangement eliminates Bear Creek’s debt and stream burden

(totaling US$121 million as at September 30, 2025) and significantly reduces liquidity and going

concern risk for Bear Creek Shareholders.

 Enhanced Capital Markets Profile: Participation in a growth-oriented company with increased

critical mass, having a combined equity market capitalization of approximately $625 million,which

will benefit from increased liquidity and the potential to amplify market exposure and normalize

price to net asset value ratios.

 Insider Support: All directors and officers of Bear Creek, as well as Bear Creek’s largest

shareholders, Royal Gold, Inc. (“Royal Gold”) and Equinox Gold Corp. (“Equinox”), have signed

voting support agreements in favour of the Arrangement, representing approximately 34% of the

outstanding Bear Creek Shares.

 Debt Restructuring: Outstanding debt obligations with Equinox and affiliates of Royal Gold are

restructured in a manner which preserves Bear Creek Shareholders’ exposure to the Corani

Project.

Details of the Arrangement

Bear Creek and Highlander Silver entered into a definitive Arrangement Agreement on December

18, 2025, pursuant to which Highlander Silver will acquire all of the issued and outstanding Bear

Creek Shares by way of a statutory plan of arrangement under the Business Corporations Act

(British Columbia).

Bear Creek Shareholders will receive 0.1175 common shares in the capital of Highlander Silver

(the “Highlander Shares”, and such ratio being the “Exchange Ratio”) in exchange for each Bear

Creek Share held immediately prior to the effective time of the Arrangement. Upon completion of

the Arrangement, existing holders of Highlander Shares (“Highlander Shareholders”) and former

Bear Creek Shareholders will own approximately 82% and 18% of the total issued and outstanding

Highlander Shares, respectively, on a fully-diluted basis.

Highlander Silver expects to issue an aggregate of approximately 34,450,672 Highlander Shares

to the Bear Creek Shareholders, based on the Bear Creek Shares outstanding as at the date of this

announcement. Highlander Silver may also issue up to approximately 346,253 additional

Highlander Shares subject to, as part of the Arrangement, the conversion into Bear Creek Shares

of certain convertible securities of Bear Creek at the effective time of the Arrangement. In-the-

money stock options (as determined to be “in-the-money” as at the date of the Arrangement

Agreement), restricted share units (the “RSUs”) and deferred share units (the “DSUs”) of Bear

Creek outstanding immediately prior to the effective time of the Arrangement will (whether vested

or unvested) immediately vest and be converted, as a step in the Arrangement, into Bear Creek

Shares and the holders thereof will receive the number of Highlander Shares to which they are

entitled for such Bear Creek Shares under the Arrangement based on the Exchange Ratio. Out-of-

the-money options of Bear Creek (as determined to be “out-of-the-money” as at the date of the

Arrangement Agreement) will be cancelled without any payment and such out-of-the-money

optionholders will cease to have any rights under such cancelled options.

The outstanding warrants of Bear Creek will be treated in accordance with their terms and are

expected to continue to trade on the TSX Venture Exchange (“TSXV”) under the symbol “BCM.WT”.

After giving effect to the Arrangement, Bear Creek warrants will become exercisable into Highlander

Shares.

In addition, Highlander Silver has also entered into agreements with affiliates of Royal Gold and

Equinox to settle all of Bear Creek’s outstanding indebtedness owing to such parties, subject to the

completion of the Transaction (the “Debt Settlement Arrangements” and together with the

Arrangement, the “Transaction”).

The Transaction is expected to close in the first quarter of 2026, subject to the receipt of all required

court, regulatory and stock exchange approvals. Following completion of the Arrangement, the

Highlander Shares will remain listed on the Toronto Stock Exchange and the Bear Creek Shares

will be delisted from the TSXV.

Debt Settlement Arrangements

Highlander Silver has entered into definitive agreements to: (i) settle outstanding debt obligations

owing by Bear Creek to Equinox and certain affiliates of Royal Gold; and (ii) terminate the gold and

silver stream obligations between Bear Creek and an affiliate of Royal Gold under the Mercedes

streaming arrangement.

Royal Gold will receive cash consideration of US$6.2 million, an incremental 1.75% secured net

smelter return royalty on the Corani Project and an unsecured 2% net smelter return royalty on the

Mercedes mine, together with certain parent guarantees from Highlander Silver. Royal Gold’s

existing 1% secured net smelter return royalty on the Corani Project will remain in place, such that

Royal Gold will hold an aggregate 2.75% secured net smelter return royalty on the Corani Project

(the “Corani NSR”). Highlander Silver will be permitted to buy back 0.5% of the Corani NSR for

US$25 million until the earlier of: (i) January 1, 2033; and (ii) the date that is 6 months after a final

investment decision (“FID”) is made. If the FID is obtained before December 31, 2028, Highlander

Silver will be permitted to buy back 0.75% of the Corani NSR for US$30 million.

Equinox will receive US$1.6 million of cash consideration and a 0.5% unsecured net smelter royalty

on the Corani Project (the “Equinox NSR”). Highlander Silver will be permitted to buy back 0.167%

of the Equinox NSR for US$8.3 million until the earlier of: (i) January 1, 2033; and (ii) the date that

is 6 months after an FID.

The Debt Settlement Arrangements are conditional upon closing the Arrangement.

Concurrent with execution of the Arrangement Agreement, both Royal Gold and Equinox have

agreed to extend the interest accrual period on Bear Creek’s convertible debts owing to both parties

from December 31, 2025 to the earlier of (i) the closing date of the Arrangement and (ii) the

termination of the Arrangement Agreement in accordance with its terms (the “Interest Deferral”). As

at September 30, 2025, approximately $3.9 million of interest was accrued and payable to the

parties. The fixed gold delivery obligations to Royal Gold under the Mercedes streaming

arrangement will continue until the closing of the Arrangement.

Each of Royal Gold and Equinox is a “related party” of the Bear Creek and the Debt Settlement

Arrangements and the Interest Deferral constitute "related party transactions" (as each term is

defined in the policies of the TSXV and MI 61-101). Bear Creek intends to rely on the specified

markets exemption from the formal valuation requirement set forth in subsection 5.5(b) of MI 61-

101 and intends to seek approval from disinterested shareholders of Bear Creek, excluding for this

purpose the votes held by any person required under MI 61-101 at the Bear Creek Meeting (as

defined below).

Concurrent Non-Brokered Private Placement

Concurrently with the entering into of the Arrangement Agreement, Highlander Silver has entered

into a subscription agreement with Bear Creek pursuant to which Highlander Silver will subscribe

for 50,000,000 Bear Creek Shares at a price of $0.36 per Bear Creek Share for gross proceeds of

$18 million to acquire approximately 14.6% ownership stake in Bear Creek (the “Private

Placement”). The proceeds from the Private Placement will be used by Bear Creek for bonding,

site investigation, exploration and studies at the Corani Project and for general working capital

purposes at Mercedes. Closing of the Private Placement is expected to be completed on December

30, 2025 and is not contingent on the completion of the Arrangement.

The Private Placement is subject to the approval of the TSXV and other customary regulatory

approvals. No finder’s fee is payable in connection with the Private Placement. The Bear Creek

Shares issued under the Private Placement will be subject to a statutory four month and one day

hold period, pursuant to securities laws in Canada. The Bear Creek Shares issued under the Private

Placement have not been and will not be registered under the United States Securities Act of 1933,

as amended (the “U.S. Securities Act”), or the securities laws of any state of the United States. This

press release shall not constitute an offer to sell or the solicitation of an offer to buy any securities

of Bear Creek, nor shall there be any offer or sale of any securities of Bear Creek in any jurisdiction

in which such offer, solicitation or sale would be unlawful prior to registration or qualification under

the securities laws of any such jurisdiction.

Pursuant to the Arrangement, Bear Creek Shares held by Highlander Silver will be cancelled in

accordance with the terms of the Arrangement Agreement and no Highlander Shares or other

compensation will be issued in connection with such cancellation.

Transaction Conditions and Timing

The Arrangement will be effected by way of a court-approved plan of arrangement under the

Business Corporations Act (British Columbia) and will require the approval of: (i) at least 66⅔% of

votes cast by Bear Creek Shareholders, (ii) 66⅔% of the votes cast by the Bear Creek Shareholders

and holders of the stock options, RSUs and DSUs (collectively, the “Bear Creek Securityholders”), voting

together as a single class, and, if required, (iii) a simple majority of the votes cast by disinterested

shareholders of Bear Creek, excluding for this purpose the votes held by any person required under

Multilateral Instrument 61-101 – Protection of Minority Security Holders in Special Transactions.

The Arrangement will require approval of a simple majority of votes cast by Highlander

Shareholders.

The Arrangement Agreement includes customary representations and warranties for a transaction

of this nature as well as customary interim period covenants regarding the operation of Highlander

Silver’s and Bear Creek’s businesses. The Arrangement Agreement also includes customary deal

protections in favour of each of Highlander Silver and Bear Creek. With respect to Highlander Silver,

these protections include fiduciary-out provisions, non-solicitation covenants, and a right to match

any superior proposals. With respect to Bear Creek, these protections include a fiduciary-out

provision. The Arrangement Agreement includes a termination fee of $8 million payable by Bear

Creek in the event the Arrangement Agreement is terminated in certain circumstances and a

reverse-termination fee of $8 million payable by Highlander Silver in the event the Arrangement

Agreement is terminated in certain circumstances.

In addition to securityholder and court approvals, the Arrangement is subject to applicable

regulatory approvals, stock exchange approvals and the satisfaction of certain other closing

conditions customary in transactions of this nature. The Arrangement is expected to close in the

first quarter of 2026.

None of the securities to be issued pursuant to the Arrangement have been or will be registered

under the U.S. Securities Act, or any state securities laws, and any securities issuable in the

Arrangement are anticipated to be issued in reliance upon available exemptions from such

registration requirements pursuant to Section 3(a)(10) of the U.S. Securities Act and applicable

exemptions under state securities laws. This press release does not constitute an offer to sell or the

solicitation of an offer to buy any securities.

Further details of the Arrangement, will be included in separate management information circulars

to be prepared by each of Bear Creek (the “Bear Creek Circular”) and Highlander Silver (the

“Highlander Circular”) that will be delivered to Bear Creek Shareholders and Highlander

Shareholders, respectively, in advance of the meeting of Bear Creek Securityholders (the “Bear

Creek Meeting”) and the meeting of Highlander Shareholders (the “Highlander Meeting”), each of

which are anticipated to be held in February 2026. A copy of the Arrangement Agreement will be

made available on Bear Creek’s and Highlander Silver’s SEDAR+ profiles at www.sedarplus.com.

The Bear Creek Circular and Highlander Circular will also be made available on Bear Creek’s and

Highlander Silver’s SEDAR+ profiles in advance of the Bear Creek Meeting and the Highlander

Meeting.

Boards of Directors’ Recommendation

The board of directors of Highlander Silver (the “Highlander Board”), after consultation with its

outside financial and legal advisors, unanimously approved, among other things, the Arrangement,

the subscription for Bear Creek Shares under the Private Placement and the Debt Settlement

Arrangements. The Highlander Board has determined the Arrangement is in the best interests of

Highlander Silver and the Highlander Board unanimously recommends that the Highlander

Shareholders vote in favour of approving the Arrangement at the Highlander Meeting.

Based on the unanimous recommendation of a special committee of independent directors of Bear

Creek (the “Special Committee”) and after consultation with its outside financial and legal advisors,

the board of directors of Bear Creek (the “Bear Creek Board”) unanimously approved the

Arrangement and has determined the Arrangement is in the best interests of Bear Creek, and that

the consideration to be received by Bear Creek Shareholders is fair, from a financial point of view,

to Bear Creek Shareholders. The Bear Creek Board unanimously recommends that Bear Creek

Shareholders vote in favour of approving the Arrangement at the Bear Creek Meeting.

BMO Capital Markets and Stifel Nicolaus Canada Inc. have provided fairness opinions to the Bear

Creek Board in connection with the Transaction.

Voting Support Agreements

Each of Highlander Silver’s and Bear Creek’s directors and officers support the Transaction and

have entered into customary voting support agreements agreeing to vote their Highlander Shares

or Bear Creek Shares, respectively, in favor of the Arrangement. Royal Gold and Equinox have

also entered into a voting support agreement with Highlander Silver to vote their Bear Creek Shares

in favour of the Arrangement, resulting in approximately 34% of all issued and outstanding Bear

Creek Shares and 31% of all issued and outstanding Highlander Shares being subject to voting

support agreements to support the Transaction. The voting support agreement may be terminated

in certain circumstances, including, without limitation, upon termination of the Debt Settlement

Arrangements (in the case of Royal Gold) or the Arrangement Agreement.

Advisors and Counsel

Canaccord Genuity Corp. and Minmetals Securities Co., Ltd., headquartered in China, are acting

as financial advisors to Highlander Silver. Osler, Hoskin & Harcourt LLP is acting as legal advisor

to Highlander Silver.

BMO Capital Markets and BLB Advisory EIRL are acting as financial advisors to Bear Creek. Stifel

Nicolaus Canada Inc. is acting as independent financial advisor to the Special Committee. Borden

Ladner Gervais LLP is acting as Canadian legal advisors to Bear Creek.

About Highlander Silver

Highlander Silver is primarily focused on advancing the bonanza grade San Luis gold-silver project

that is located adjacent to the past-producing Pierina mine in Central Peru. San Luis hosts Indicated

Mineral Resources of 356 koz Au at 24.4 g/t Au and 8.4 Moz Ag at 579 g/t Ag and ranks among the