Capstone Copper Corp. — Annual Report 2024

Feb 19, 2025

==> picture [274 x 122] intentionally omitted <==

CONSOLIDATED FINANCIAL STATEMENTS

December 31, 2024 and 2023

(Expressed in United States (“US”) Dollars)

Management’s Report

The accompanying consolidated financial statements of Capstone Copper Corp. (the “Company” or “Capstone Copper”) and other information contained in the management’s discussion and analysis are the responsibility of management and have been approved by the Board of Directors. The consolidated financial statements have been prepared by management in accordance with IFRS Accounting Standards as issued by the International Accounting Standards Board and include some amounts that are based on management’s estimates and judgment.

The Board of Directors carries out its responsibility for the consolidated financial statements principally through its Audit Committee, which is composed solely of independent directors. The Audit Committee reviews the Company’s annual consolidated financial statements and recommends its approval to the Board of Directors. The Company’s auditors have full access to the Audit Committee, with and without management being present. These consolidated financial statements have been audited by Deloitte LLP.

(Signed) John MacKenzie Chief Executive Officer & Director

(Signed) Raman Randhawa Senior Vice President & Chief Financial Officer

Vancouver, British Columbia, Canada February 19, 2025

2

Independent Auditor’s Report

To the Shareholders and the Board of Directors of Capstone Copper Corp.

Opinion

We have audited the consolidated financial statements of Capstone Copper Corp. (the "Company"), which comprise the consolidated statements of financial position as at December 31, 2024 and 2023, and the consolidated statements of income (loss), comprehensive income (loss), changes in equity and cash flows for the years then ended, and notes to the consolidated financial statements, including material accounting policy information (collectively referred to as the "financial statements").

In our opinion, the accompanying financial statements present fairly, in all material respects, the financial position of the Company as at December 31, 2024 and 2023, and its financial performance and its cash flows for the years then ended in accordance with IFRS Accounting Standards as issued by the International Accounting Standards Board ("IASB").

Basis for Opinion

We conducted our audit in accordance with Canadian generally accepted auditing standards ("Canadian GAAS"). Our responsibilities under those standards are further described in the Auditor’s Responsibilities for the Audit of the Financial Statements section of our report. We are independent of the Company in accordance with the ethical requirements that are relevant to our audit of the financial statements in Canada, and we have fulfilled our other ethical responsibilities in accordance with these requirements. We believe that the audit evidence we have obtained is sufficient and appropriate to provide a basis for our opinion.

Key Audit Matter

A key audit matter is a matter that, in our professional judgment, was of most significance in our audit of the consolidated financial statements for the year ended December 31, 2023. This matter was addressed in the context of our audit of the consolidated financial statements as a whole, and in forming our opinion thereon, and we do not provide a separate opinion on this matter.

Achievement of commercial production for Mantoverde Development Project - Refer to Note 9 to the financial statements

Key Audit Matter Description

The Company determined that the Mantoverde Development Project (“MVDP”) achieved commercial production on September 30, 2024. Upon achieving commercial production, substantially all of Construction-in-Progress was reclassified to Mineral Properties, Plant & Equipment and Right of use assets, as applicable. The determination of whether MVDP has entered commercial production required significant management judgment that is dependent on consideration of various relevant criteria, including the asset commissioning and whether the assets are capable of operating near design capacity (“relevant criteria”).

Performing audit procedures to evaluate the reasonableness of management’s judgments relating to the determination of whether MVDP achieved commercial production required a high degree of auditor judgment and an increased extent of audit effort.

How the Key Audit Matter Was Addressed in the Audit

Our audit procedures relating to the determination of whether MVDP had reached the commercial production stage, included the following, among others:

• Evaluated the appropriateness of management’s assessment by analyzing relevant accounting standards, including various aspects of IFRS Accounting Standards and guidance, and consideration of common industry practice;

3

• Evaluated the reasonableness of the information used in assessing the relevant criteria by

• Testing the accuracy and completeness of production data relating to mill throughput by testing a sample of production reports and reconciling production during this period to total production;

• Evaluating whether the information is consistent with evidence obtained in other areas of the audit, external market and industry data, where applicable.

Other Information

Management is responsible for the other information. The other information comprises:

• Management's Discussion and Analysis

• The information, other than the financial statements and our auditor’s report thereon, in the Annual Report.

Our opinion on the financial statements does not cover the other information and we do not express any form of assurance conclusion thereon. In connection with our audit of the financial statements, our responsibility is to read the other information identified above and, in doing so, consider whether the other information is materially inconsistent with the financial statements or our knowledge obtained in the audit, or otherwise appears to be materially misstated.

We obtained Management's Discussion and Analysis and the Annual Report prior to the date of this auditor’s report. If, based on the work we have performed on this other information, we conclude that there is a material misstatement of this other information, we are required to report that fact in this auditor’s report. We have nothing to report in this regard.

Responsibilities of Management and Those Charged with Governance for the Financial Statements

Management is responsible for the preparation and fair presentation of the financial statements in accordance with IFRS Accounting Standards as issued by the IASB, and for such internal control as management determines is necessary to enable the preparation of financial statements that are free from material misstatement, whether due to fraud or error.

In preparing the financial statements, management is responsible for assessing the Company’s ability to continue as a going concern, disclosing, as applicable, matters related to going concern and using the going concern basis of accounting unless management either intends to liquidate the Company or to cease operations, or has no realistic alternative but to do so.

Those charged with governance are responsible for overseeing the Company's financial reporting process.

Auditor’s Responsibilities for the Audit of the Financial Statements

Our objectives are to obtain reasonable assurance about whether the financial statements as a whole are free from material misstatement, whether due to fraud or error, and to issue an auditor’s report that includes our opinion. Reasonable assurance is a high level of assurance, but is not a guarantee that an audit conducted in accordance with Canadian GAAS will always detect a material misstatement when it exists. Misstatements can arise from fraud or error and are considered material if, individually or in the aggregate, they could reasonably be expected to influence the economic decisions of users taken on the basis of these financial statements.

As part of an audit in accordance with Canadian GAAS, we exercise professional judgment and maintain professional skepticism throughout the audit. We also:

• Identify and assess the risks of material misstatement of the financial statements, whether due to fraud or error, design and perform audit procedures responsive to those risks, and obtain audit evidence that is sufficient and appropriate to provide a basis for our opinion. The risk of not detecting a material misstatement resulting from fraud is higher than for one resulting from error, as fraud may involve collusion, forgery, intentional omissions, misrepresentations, or the override of internal control.

4

• Obtain an understanding of internal control relevant to the audit in order to design audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Company's internal control.

• Evaluate the appropriateness of accounting policies used and the reasonableness of accounting estimates and related disclosures made by management.

• Conclude on the appropriateness of management’s use of the going concern basis of accounting and, based on the audit evidence obtained, whether a material uncertainty exists related to events or conditions that may cast significant doubt on the Company's ability to continue as a going concern. If we conclude that a material uncertainty exists, we are required to draw attention in our auditor’s report to the related disclosures in the financial statements or, if such disclosures are inadequate, to modify our opinion. Our conclusions are based on the audit evidence obtained up to the date of our auditor’s report. However, future events or conditions may cause the Company to cease to continue as a going concern.

• Evaluate the overall presentation, structure and content of the financial statements, including the disclosures, and whether the financial statements represent the underlying transactions and events in a manner that achieves fair presentation.

• Plan and perform the group audit to obtain sufficient appropriate audit evidence regarding the financial information of the entities or business units within the Company as a basis for forming an opinion on the financial statements. We are responsible for the direction, supervision and review of the audit work performed for purposes of the group audit. We remain solely responsible for our audit opinion.

We communicate with those charged with governance regarding, among other matters, the planned scope and timing of the audit and significant audit findings, including any significant deficiencies in internal control that we identify during our audit.

We also provide those charged with governance with a statement that we have complied with relevant ethical requirements regarding independence, and to communicate with them all relationships and other matters that may reasonably be thought to bear on our independence, and where applicable, related safeguards.

From the matters communicated with those charged with governance, we determine those matters that were of most significance in the audit of the consolidated financial statements of the current period and are therefore the key audit matters. We describe these matters in our auditor's report unless law or regulation precludes public disclosure about the matter or when, in extremely rare circumstances, we determine that a matter should not be communicated in our report because the adverse consequences of doing so would reasonably be expected to outweigh the public interest benefits of such communication.

The engagement partner on the audit resulting in this independent auditor’s report is David Macdonald.

/s/ Deloitte LLP

Chartered Professional Accountants Vancouver, British Columbia February 19, 2025

5

Capstone Copper Corp.

Consolidated Statements of Financial Position As at December 31, 2024 and 2023

expressed in thousands of US dollars

ASSETS		2024		2023
Current
Cash and cash equivalents	$	131,593	$	126,016
Short-term investments		753		804
Receivables_(Note 7)_		147,765		147,318
Inventories_(Note 8)_		209,448		149,613
Derivative assets_(Note 6)_		24,618		18,984
Other assets_(Note 10)_		32,070		44,122
		546,247		486,857
Mineral properties, plant and equipment_(Note 9)_		5,718,249		5,286,257
Derivative assets_(Note 6)_		11,723		16,565
Deferred income tax assets		50,475		53,401
Other assets_(Note 10)_		38,338		30,835
Total assets	$	6,365,032	$	5,873,915
LIABILITIES
Current
Accounts payable and accrued liabilities	$	330,183	$	272,277
Current portion of long-term debt_(Note 14)_		85,748		28,398
Current portion of due to related party_(Note 12)_		6,486		3,243
Lease liabilities_(Note 13)_		46,646		33,516
Derivative liabilities_(Note 6)_		2,369		16,788
Income taxes payable		16,345		6,186
Other liabilities_(Note 11)_		206,287		71,412
		694,064		431,820
Long-term debt_(Note 14)_		736,008		970,258
Due to related party_(Note 12)_		240,589		192,628
Deferred revenue_(Note 15)_		146,017		147,619
Lease liabilities_(Note 13)_		200,323		102,983
Derivative liabilities_(Note 6)_		1,340		—
Provisions_(Note 17)_		234,761		268,132
Deferred income tax liabilities_(Note 16)_		636,783		630,225
Other liabilities_(Note 11)_		12,339		64,128
Total liabilities	$	2,902,224	$	2,807,793
EQUITY
Share capital	$	2,753,196	$	2,451,572
Other reserves		47,355		40,129
Retained earnings		254,054		168,886
Total equity attributable to equity holders of the Company		3,054,605		2,660,587
Non-controllinginterest_(Note 12)_		408,203		405,535
Total equity		3,462,808		3,066,122
Total liabilities and equity	$	6,365,032	$	5,873,915

See accompanying notes to these consolidated financial statements.

6

Capstone Copper Corp.

Consolidated Statements of Income (Loss) Years Ended December 31, 2024 and 2023

expressed in thousands of US dollars, except share and per share amounts

Revenue(Note 19) Operating costs Production costs Royalties Depletion and amortization Earnings from mining operations General and administrative expenses Exploration expenses (Note 9) Share-based compensation expense(Note 18) Income from operations Other income (expense) Foreign exchange gain (loss) Realized and unrealized (losses) gains on derivative instruments_(Note 6) Gain (loss) on extinguishment of debt(Note 14) Minto obligation recovery (expense)(Note 17) Other income (expense) (Note_ 25 ) Finance income_(Note 26) Finance expense(Note 26) Income (loss) before income taxes Income tax expense(Note 16)_ Net income(loss)	2024 2023
	$ 1,599,222$ 1,345,511
	(1,056,316) (1,014,002) (17,929) (11,225) (313,424) (237,269)
	211,553 83,015
	(31,533) (26,119) (1,133) (4,961) (16,013) (19,005)
	162,874 32,930
	23,003 (5,066) (350) 3,075 — (2,721) 7,261 (51,923) 1,426 (31,202) 5,206 6,422 (66,006) (42,518)
	133,414 (91,003)
	(47,540) (33,723)
	$ 85,874$ (124,726)
Net income (loss) attributable to: Shareholders of Capstone Copper Corp. Non-controllinginterest_(Note 12)_	$ 82,906$ (101,672) 2,968 (23,054)
	$ 85,874$ (124,726)
Net earnings (loss) per share attributable to shareholders of Capstone Copper Corp.
Earnings (loss) per share - basic_(Note 20) Weighted average number of shares - basic (Note 20)_	$ 0.11$ (0.15) 750,633,211 693,520,515
Earnings (loss) per share - diluted_(Note 20) Weighted average number of shares - diluted (Note 20)_	$ 0.11$ (0.15) 752,248,608 693,520,515

See accompanying notes to these consolidated financial statements.

7

Capstone Copper Corp. Consolidated Statements of Comprehensive Income (Loss) Years Ended December 31, 2024 and 2023

expressed in thousands of US dollars

Net income (loss) Other comprehensive income (loss) ("OCI") Items that will not be reclassified subsequently to profit or loss Change in fair value of marketable securities, net of tax of $nil (2023 - $nil) Remeasurement for retirement benefit plans, net of tax of $3,270 (2023 - $(1,307)) Total other comprehensive income (loss) for the year Total comprehensive income(loss) Total comprehensive income (loss) attributable to: Shareholders of Capstone Copper Corp. Non-controllinginterest_(Note 12)_	2024 2023
	$ 85,874$ (124,726)
	(104) (844) 4,883 (4,690)
	4,779 (5,534)
	4,779 (5,534)
	$ 90,653$ (130,260)
	$ 87,985$ (107,156) 2,668 (23,104)
	$ 90,653$ (130,260)

See accompanying notes to these consolidated financial statements.

8

Capstone Copper Corp.

Consolidated Statements of Cash Flows Years Ended December 31, 2024 and 2023

expressed in thousands of US dollars

	2024 2023
Cash provided by (used in):	$ 85,874$ (124,726) 316,154 236,884 47,540 33,723 1,172 1,863 16,013 19,005 60,800 36,096 (36,002) 4,937 (6,080) (17,110) 4,588 7,100 — 2,721 (6,553) — (11,904) (19,033) (7,261) 56,923 (30,557) (26,233) 5,687 4,529 (19,730) (10,407) (4,946) (1,468)
Operating activities Net income (loss) Adjustments for: Depletion and amortization_(Note 22) Income tax expense(Note 16) Inventory write-down (Note 8) Share-based compensation expense(Note 18) Net finance costs(Note 26) Unrealized (gain) loss on foreign exchange and other Unrealized (gain) on derivatives(Note 6) Gold stream obligation(Note 25) Loss (gain) on extinguishment of debt(Note 14) Remeasurement of decommissioning and restoration provision Amortization of deferred revenue and variable consideration adjustments(Note 15) Minto obligation (recovery) expense Income taxes paid Income taxes received Payments on Minto obligation(Note 17) Other payments Operating cash flow before working capital and other non-cash changes Changes in non-cash working capital(Note 22) Other non-cash changes(Note 22) Operating cash flow Investing activities Mineral properties, plant and equipment additions Finance costs capitalized on construction in progress Cash acquired from the acquisition of Sierra Norte(Note 5) Proceeds on disposal of assets and other Proceeds from short-term investments Investing cash flow Financing activities Proceeds from borrowings(Note 14) Repayment of borrowings(Note 14) Proceeds from related party (Note 12) Repayment of borrowings from related party(Note 12) Repayment of lease obligations(Note 13) Proceeds from the exercise of options Net proceeds from issuance of shares(Note 18)_ Net proceeds (payments) for settlement of derivatives Interest paid on long-term debt and surety bonds Other Financing cash flow Effect of exchange rate changes on cash and cash equivalents Increase in (decrease in) cash and cash equivalents Cash and cash equivalents - beginningofyear
	414,795 204,804
	(3,201) (90,635) (12,951) 2,648
	398,643 116,817
	(448,032) (616,729) (60,258) (61,540) 70 — 1,395 2,165 52 2,825
	(506,773) (673,279)
	289,500 544,375 (375,898) (120,375) 42,000 129,900 (3,243) — (62,689) (42,716) 3,770 2,722 252,949 537 3,216 (30,986) (6,591) — (2,061)
	115,940 508,470
	(2,233) 3,701
	5,577 (44,291) 126,016 170,307
Cash and cash equivalents - end ofyear	$ 131,593$ 126,016
Supplemental cash flow information_(Note 22)_

See accompanying notes to these consolidated financial statements.

9

Capstone Copper Corp.

Consolidated Statements of Changes in Equity

Years Ended December 31, 2024 and 2023

expressed in thousands of US dollars, except share amounts

January 1, 2024 Shares issued on exercise of options(Note 18) Shares issued under TSUP(Note 18) Share-based compensation(Note 18) Settlement of share units Shares issued under the Offering(Note 18) Change in fair value of marketable securities Remeasurements for retirement benefit plans Acquisition of Compania Minera Sierra Norte S.A(Note 5) Net income	Attributable to equityholders of the Company Number of shares Share capital Reserve for equity settled share-based transactions Revaluation reserve Foreign currency translation reserve Share purchase reserve Retained earnings Total attributable to equity holders Non- controlling interest Total equity
	696,073,153 $ 2,451,572 $ 59,241 $ (1,306) $ (17,101) $ (705) $ 168,886 $ 2,660,587 $ 405,535 $ 3,066,122 1,944,593 5,473 (1,703) — — — — 3,770 — 3,770 1,189,071 3,204 (3,204) — — — — — — — — — 6,351 — — — — 6,351 — 6,351 — — — — — 709 2,262 2,971 — 2,971 56,548,000 252,947 — — — — — 252,947 — 252,947 — — — (104) — — — (104) — (104) — — — 5,177 — — — 5,177 (300) 4,877 6,139,358 40,000 — — — — — 40,000 — 40,000 — — — — — — 82,906 82,906 2,968 85,874
December 31, 2024	761,894,175 $ 2,753,196 $ 60,685 $ 3,767 $ (17,101) $ 4 $ 254,054 $ 3,054,605 $ 408,203 $ 3,462,808
Balance - January 1, 2023 Shares issued on exercise of options Share-based compensation Shares issued under TSUP (Note 18) Settlement of share units Change in fair value of marketable securities Remeasurements for retirement benefit plans Net loss	Number of shares Share capital Reserve for equity settled share-based transactions Revaluation reserve Foreign currency translation reserve Share purchase reserve Retained earnings Total attributable to equity holders Non- controlling interest Total equity
	691,639,972 2,447,377 56,751 4,178 (17,101) (2,500) 262,512 2,751,217 428,639 3,179,856 4,371,345 3,991 (1,267) — — — — 2,724 — 2,724 — — 3,961 — — — — 3,961 — 3,961 61,836 204 (204) — — — — — — — — — — — — 1,795 8,046 9,841 — 9,841 — — — (844) — — — (844) — (844) — — — (4,640) — — — (4,640) (50) (4,690) — — — — — — (101,672) (101,672) (23,054) (124,726)
December 31, 2023	696,073,153 $ 2,451,572 $ 59,241 $ (1,306)$ (17,101)$ (705)$ 168,886 $ 2,660,587 $ 405,535 $ 3,066,122

See accompanying notes to these consolidated financial statements.

10

Capstone Copper Corp.

Notes to the Consolidated Financial Statements

Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

1. Nature of Operations

The accompanying consolidated financial statements for Capstone Copper Corp. (the "Company" or "Capstone Copper") have been prepared as at December 31, 2024. The Company is listed on the Toronto Stock Exchange, and, effective February 2, 2024, on the Australian Securities Exchange (“ASX”) as an ASX Foreign Exempt Listing.

Capstone Copper Corp., through a wholly owned Chilean subsidiary, Mantos Copper S.A., owns and operates the Mantos Blancos mine, located forty-five kilometers northeast of Antofagasta, Chile and the 70%-owned Mantoverde mine, through a Chilean subsidiary, Mantoverde S.A., located fifty kilometers southeast of Chanaral, Chile.

The Company is also engaged in the production of and exploration for base metals in the United States (“US”), Mexico, and Chile, with a focus on copper. Pinto Valley Mining Corp. (“Pinto Valley”), a wholly owned US subsidiary, owns and operates the Pinto Valley mine located in Arizona, US. Capstone Gold, S.A. de C.V. (“Capstone Gold”), a wholly owned Mexican subsidiary, owns and operates the Cozamin mine located in Zacatecas, Mexico, and has a portfolio of exploration properties in Mexico.

Minera Santo Domingo SCM, a wholly owned Chilean subsidiary of the Company, holds the fully permitted Santo Domingo copper-iron-gold-cobalt development project in the Atacama region of Chile, 35km northeast of Mantoverde. Capstone Copper Corp., owns 100% of the shares in Compania Minera Sierra Norte S.A ("Sierra Norte"). The Sierra Norte land package covers over 7,000 hectares in Region III, Chile and is located approximately twenty kilometers northwest of the Santo Domingo project. Capstone Mining Chile SpA, a wholly owned Chilean subsidiary, performs early stage exploration for base metal deposits in Chile.

The Company's head office, registered and records office and principal address are located at 2100 - 510 West Georgia Street, Vancouver, British Columbia, Canada and the Company is incorporated in British Columbia.

These consolidated financial statements were approved by the Board of Directors and authorized for issuance on February 19, 2025.

2. Basis of preparation and consolidation

These consolidated financial statements have been prepared in accordance with IFRS Accounting Standards® as issued by the International Accounting Standards Board ("IASB"). The consolidated financial statements have been prepared under the historical cost convention, except for certain financial instruments which are measured at fair value.

These consolidated financial statements have been prepared in connection with the accounting policies presented below and are based on IFRS and IFRS Interpretations Committee ("IFRIC") interpretations issues and effective as of December 31, 2024. The policies set out below were consistently applied to all of the periods presented.

Group Companies

The immediate parent and ultimate controlling party of the group is Capstone Copper Corp. (incorporated in British Columbia, Canada).

11

Capstone Copper Corp.

Notes to the Consolidated Financial Statements Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

The details of the Company’s material entities, ownership interests, and functional currency are as follows:

Name	Location	Ownership	Status	Functional Currency
Pinto Valley Mining Corp.	US	100.0%	Consolidated	US dollar
Mantos Copper S.A.	Chile	100.0%	Consolidated	US dollar
Mantoverde S.A.	Chile	70.0%	Consolidated	US dollar
Capstone Gold, S.A. de C.V.	Mexico	100.0%	Consolidated	US dollar
Minera Santo Domingo SCM	Chile	100.0%	Consolidated	US dollar

Balances and transactions between the Company and its subsidiaries, which are related parties of the Company, have been eliminated on consolidation and are not disclosed in this note.

Any transactions with other related parties in the normal course of operations are measured at the fair value amount of consideration established and agreed to by the related parties. Any amounts due to/receivable from related parties are unsecured, non-interest bearing and have no specific repayment terms.

3 Material Accounting Policy Information, Estimates and Judgments

a. Use of estimates and judgments

The preparation of the consolidated financial statements requires management to select accounting policies and make estimates and judgments that may have a significant impact on the consolidated financial statements. Estimates are continuously evaluated, and are based on management’s experience and expectations of future events that are believed to be reasonable under the circumstances. However, actual outcomes can differ from these estimates.

Critical judgments exercised in applying accounting policies, apart from those involving estimates, that have the most significant effect on the amounts recognized in the consolidated financial statements are as follows:

• i. Economic recoverability and probability of future economic benefits of mineral exploration, evaluation and development costs

• The Company has determined that exploratory drilling, evaluation, development, and related costs incurred, which were capitalized, have future economic benefits and are economically recoverable. In making this judgment, the Company has assessed various sources of information including, but not limited to, the geologic and metallurgic information, history of conversion of mineral deposits to proven and probable reserves, scoping and feasibility studies, proximity to existing ore bodies, existing permits, and life of mine plans.

• ii. Assessment of impairment and impairment reversal indicators Management applies significant judgment in assessing whether indicators of impairment or impairment reversal exist for a cash generating unit ("CGU") which would necessitate impairment testing. Internal and external factors such as significant changes in the use of the asset, commodity prices, foreign exchange rates, capital and production forecasts, mineral reserves and resource estimates and discount rates are used by management in determining whether there are any indicators of impairment or impairment reversal.

• iii. Functional currency

The functional currency of each of the Company’s subsidiaries is the currency of the primary economic environment in which the entity operates. Determination of functional currency may involve certain judgments to determine the primary economic environment and the Company reconsiders the functional currency of its entities if there is a change in events and conditions which determined the primary economic environment. The US dollar is Capstone Copper’s functional currency.

12

Capstone Copper Corp. Notes to the Consolidated Financial Statements Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

• iv. Financial instruments Financial assets and liabilities are designated upon inception to various classifications. The designation determines the method by which the financial instruments are carried on the consolidated statement of financial position subsequent to inception and how changes in value are recorded. The designation may require the Company to make certain judgments, taking into account management’s intention of the use of the financial instruments.

• v. Property, plant and equipment - Determination of available for use date Judgment is required in determining the date that property, plant and equipment is available for use. As asset is considered available for use when it is in the location and condition necessary to operate in the manner intended by management.

The Mantoverde Development Project ("MVDP") consists of property plant and equipment that became available for use at different dates. When assessing when these assets are available for use, management considered several factors, the most significant of which are the asset commissioning and whether the assets are capable of operating near design capacity to ensure a reliable and consistent throughput rate to produce the expected quantity of outputs. The majority of the assets related to MVDP became available for use at the end of September 2024.

Key sources of estimation uncertainty that have a significant risk of causing a material adjustment to the carrying amounts of assets and liabilities are:

• i. Estimated reclamation and closure costs The Company’s provision for reclamation and closure cost obligations represents management’s best estimate of the present value of the future cash outflows required to settle the liability. The provision reflects estimates of future costs directly attributable to remediating the liability, inflation, movements in foreign exchange rates and assumptions of risks associated with the future cash outflows, and the applicable risk-free interest rates for discounting future cash outflows. Changes in the factors above can result in a change to the provision recognized by the Company. To the extent the carrying value of the related mining property is not increased above its recoverable amount, changes to reclamation and closure cost obligations are recorded with a corresponding change to the carrying amounts of related mining properties.

• ii. Share-based compensation

The Company uses the fair value method of accounting for all share-based payments. The fair value method of accounting includes the use of the Black-Scholes Option Pricing Model. Option pricing models require the input of subjective assumptions including the volatility, expected life, and forfeiture rate. Changes in the input assumptions can materially affect the fair value estimate, the Company’s earnings, and equity reserves. The portion of share-based compensation recorded is based on the vesting schedule of the options and units.

The Performance Share Units (“PSUs”) and Treasury Performance Share Units ("TPSUs") include the use of a performance factor that can range from 0% to 200% and is determined by comparing the Company’s total shareholder return to those achieved by a peer group of companies, which can affect the fair value estimate.

• iii. Income taxes

Deferred tax assets and liabilities are determined based on differences between the financial statement carrying values of assets and liabilities and their respective income tax bases (“temporary differences”), and losses carried forward.

The determination of the ability of the Company to utilize tax loss carry-forwards to offset deferred tax liabilities requires management to exercise judgment and make certain assumptions about the future performance of the Company. Management is required to assess whether it is probable that the Company will benefit from these prior losses and other deferred tax assets. The tax rates expected to

13

Notes to the Consolidated Financial Statements Years Ended December 31, 2024 and 2023

Capstone Copper Corp.

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

be in effect when temporary differences reverse are 21% for US, 27% for Canada, 30% for Mexico and 27% for Chile. The Company is subject to certain mining royalties which are referenced in Note 16. The Chilean Mining Royalty has progressive tax rates ranging from 8% to 26% based on the adjusted mining operating income ("RIOMA") and the rate on mining royalties in Mexico is 8.5%. Changes in economic conditions, metal prices, applicable tax laws and other factors could result in revisions to the estimates of the benefits to be realized or the timing of utilizing the losses.

• iv. Mineral reserve and resource estimates Mineral reserves and mineral resources referenced in these financial statements are determined in accordance with National Instrument 43-101, “Standards of Disclosure for Mineral Projects”, issued by the Canadian Securities Administrators. There are numerous uncertainties inherent in estimating mineral reserves and mineral resources, including many factors beyond the Company’s control. Such estimation is a subjective process, and the accuracy of any mineral reserve or mineral resource estimate is a function of the quantity and quality of available data and of the assumptions made and judgments used in engineering and geological interpretation. Differences between management’s assumptions in estimating mineral reserves and mineral resources, including economic assumptions such as metal prices, and the market conditions could have a material effect in the future on the Company’s financial position and results of operation.

• v. Depletion rates

The carrying amounts of the Company’s producing mining properties are depleted based on recoverable tonnes contained in permitted proven and probable mineral reserves and a portion of mineral resources. The Company includes a portion of permitted mineral resources where it is considered highly probable that those resources will be economically extracted over the life of mine. Changes to estimates of recoverable tonnes of permitted reserves and resources and depletable costs including changes resulting from revisions to the Company’s mine plans and changes in metal price forecasts can result in a change to future depletion rates.

• vi. Amortization rate for property, plant and equipment and depletion rates for mining interests Depletion and amortization expenses are allocated based on estimated asset lives. Should the asset life, depletion rates, or amortization rates differ from the initial estimate, an adjustment would be made in the consolidated statement of income (loss) on a prospective basis.

• vii. Impairment of mineral properties, plant and equipment

• Management considers both external and internal sources of information in assessing whether there are any indications that the Company’s mineral properties, plant and equipment are impaired and whether previously recorded impairments should be reversed. External sources of information management considers include changes in the market, economic and legal environment in which the Company operates that are not within its control and affect the recoverable amount of its mineral properties, plant and equipment. Internal sources of information that management considers include the manner in which mineral properties, plant and equipment are being used or are expected to be used and indications of economic performance of the assets. Management concluded that there were no indicators of impairment or reversals of impairments previously recorded, for the years ended December 31, 2024 and 2023.

In determining the recoverable amounts of the Company’s mineral properties, plant and equipment, management makes estimates of the future operating results and discounted net cash flows expected to be derived from the Company’s mining properties, costs to sell the mining properties and the appropriate discount rate. Changes in metal price forecasts, estimated future costs of production, estimated future non-expansionary capital expenditures, fair value due to strategic processes, the amount of recoverable mineral reserves, mineral resources, and exploration potential, and/or changes in current economics, regulatory or legal requirements and comparable market transactions can result in a write-down or a reversal of a previous write-down of the carrying amounts of the Company’s mineral properties, plant and equipment. Management concluded that there were no indicators of

14

Capstone Copper Corp.

Notes to the Consolidated Financial Statements Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

impairment, or reversal of impairments previously recorded, for the years ended December 31, 2024 and 2023, respectively.

viii. Deferred stripping costs

In determining whether stripping costs incurred during the production phase of a mining property relate to mineral reserves that will be mined in a future period and therefore should be capitalized, the Company makes estimates of the proportion of stripping activity which relates to extracting ore in the current period versus the proportion which relates to obtaining access to ore reserves which will be mined in the future. The Company includes a portion of permitted mineral resources where it is considered highly probable that those resources will be economically extracted over the life of mine.

ix. Inventory valuation

Consumable parts and supplies, ore stockpiles and concentrates, are valued at the lower of cost and net realizable value. Estimates in the carrying values of inventories arise due to the nature of the valuation of ore stockpiles and concentrates based on an appropriate allocation of direct mining costs, direct labour and material costs, mine site overhead, and depletion and amortization.

Long-term inventory consists of ore stockpiles that are not expected to be processed within one year. The Company carries its long-term inventory at the lower of cost and net realizable value. If the carrying value exceeds the net realizable amount, a write-down is required. The write-down may be reversed in a subsequent period if the circumstances which caused it no longer exist.

x. Valuation of financial instruments, including estimates used in provisional pricing calculations

Financial instrument estimates are based on either unadjusted quoted prices in active markets or direct or indirect observable inputs. Provisional pricing calculations are determined based on the change in the value of forward commodity prices of metals. To account for the change in metal prices from the total contract value to the 90% of the provisional value amount that has been received, estimates of the value of concentrates are used to determine the provisionally priced concentrate receivables at each period.

xi. Accounting for acquisitions

Determining the fair value of assets acquired and liabilities assumed and resulting goodwill, if any, requires that management make certain judgments and estimate taking into account information available at the time of acquisition about future events, including, but not restricted to, future metal prices, estimates of mineral reserves and resources acquired, expected future production costs and capital expenditures based on the life of mine plans, long-term foreign exchange rates, discount rates, and in-situ multiples to determine non-depletable mineral property. Changes to the provisional values of assets acquired and liabilities assumed, deferred income taxes and resulting goodwill, if any, are retrospectively adjusted when the final measurements are determined if related to conditions existing at the date of acquisition (within one year of acquisition).

b. Material accounting policy information of the Company is as follows:

i. Translation of foreign currencies

The functional currency and presentation currency of the Company is the US dollar. The functional currency of each entity is determined after consideration of the primary economic environment of the entity. The functional currencies of the Company’s material subsidiaries are listed in Note 2.

Transactions denominated in foreign currencies (currencies other than the functional currency of an entity) are translated at the exchange rates on the date of the transaction. Monetary assets and liabilities denominated in foreign currencies are translated at reporting date exchange rates and any gain or loss on translation is recorded in the consolidated statement of income (loss) as a foreign exchange gain (loss).

15

Capstone Copper Corp.

Notes to the Consolidated Financial Statements Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

On translation of entities with functional currencies other than the US dollar, consolidated statement of income (loss) items are translated at average rates of exchange where this is a reasonable approximation of the exchange rate at the dates of the transactions. Consolidated statement of financial position items are translated at closing exchange rates as at the reporting date. Exchange differences on the translation of the foreign currency entities at closing rates, together with differences between consolidated statement of income (loss) translated at average and closing rates, are recorded in the foreign currency translation reserve in equity.

• ii. Cash, and cash equivalents

Cash and cash equivalents is comprised of cash on hand, demand deposits and short-term investments with a maturity less than 90 days on acquisition that are readily convertible into known amounts of cash and which are subject to an insignificant risk of change in value.

• iii. Inventories

Inventories for consumable parts and supplies, ore stockpiles and concentrates, are valued at the lower of cost and net realizable value. Costs allocated to consumable parts and supplies are based on average costs and include all costs of purchase, conversion and other costs in bringing these inventories to their existing location and condition. Costs allocated to ore stockpiles and concentrates are based on average costs, which include an appropriate share of direct mining costs, direct labour and material costs, mine site overhead, depletion and amortization. If carrying value exceeds net realizable amount, a write-down is recognized. The write-down may be reversed in a subsequent period if the circumstances which caused it no longer exist.

• iv. Investments

Investments in shares of companies over which the Company exercises neither control, joint control nor significant influence are designated as fair value through OCI and recorded at fair value. Fair values are determined by reference to quoted market prices at the reporting date. Unrealized gains and losses on investments in marketable securities are recognized in the revaluation reserve. When investments in marketable securities are sold, derecognized, or determined to be impaired, the cumulative fair value adjustments remain within equity.

• v. Mineral properties, plant and equipment

• Title to mineral properties involves certain inherent risks due to the difficulties of determining the validity of certain claims as well as the potential for problems arising from the frequently ambiguous conveyancing historical characteristic of many properties. The Company has investigated title to all of its mineral properties and, to the best of its knowledge, title to all of its properties is in good standing.

• vi. Producing mineral properties

Producing mineral properties are recorded at cost less accumulated depletion and impairment charges. The costs associated with producing mineral properties include acquired interests in production stage properties representing the fair value at the time they were acquired. Producing mineral properties also include additional capitalized costs after initial acquisition. Upon sale or abandonment of producing mineral properties, the carrying value is derecognized and any gains or losses thereon are included in the consolidated statement of income (loss).

Non-depletable mineral interests are recorded at their fair value on acquisition date, either as part of a business combination or as an individual asset purchase. The value of such assets is primarily driven by the nature and amount of mineralized material believed to be contained in such properties.

Commercial production is deemed to have commenced when management determines that the operational commissioning of major mine and plant components is complete, operating results are being achieved consistently for a period of time and that there are indicators that these operating results will continue.

16

Capstone Copper Corp.

Notes to the Consolidated Financial Statements Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

At the date commercial production is reached, the Company ceases capitalization of borrowing costs and commences amortization of the associated assets the month after the criteria are met.

vii. Deferred stripping

Stripping costs during the production phase are accounted for as variable production costs and included in the costs of inventory produced during the period that the stripping costs are incurred. However, stripping costs are capitalized and recorded on the consolidated statement of financial position as a component of mineral properties, plant and equipment when the stripping activity provides access to sources of mineral reserves that will be produced in future periods that would not have otherwise been accessible in the absence of this activity. The capitalized deferred stripping assets are amortized on a units of production basis over the mineral reserves and a portion of mineral resources that directly benefited from the stripping activity as those mineral reserves and resources are actually mined.

viii. Mineral exploration and development properties

The carrying amount of mineral exploration and development properties comprise costs that are directly attributable to:

• researching and analyzing existing exploration data;

• conducting geological studies, exploratory drilling and sampling;

• examining and testing extraction and treatment methods; and

• activities in relation to evaluating the technical feasibility and commercial viability of extracting a mineral resource.

The costs associated with mineral exploration and development properties include acquired interests in development and exploration stage properties representing the fair value at the time they were acquired. Mineral exploration and development properties related to greenfield properties, which are prospective in nature and not yet supported by an internal economic assessment, are expensed in the consolidated statement of income (loss), except for acquisition costs and mining interest rights. Exploration and development expenses related to brownfield mineral properties are capitalized provided that one of the following conditions is met:

• Such costs are expected to be recouped in full through successful development and exploitation of the area of interest or alternatively, by its sale; or

• Exploration and evaluation activities in the area of interest have not yet reached a stage which permits a reasonable assessment of the existence of economically recoverable reserves, however active and significant operations in relation to the area are continuing, or planned for the future.

The carrying values of capitalized amounts of mineral exploration and development properties are reviewed when there are indicators of impairment at each reporting date. In the case of undeveloped projects, there may be only inferred mineral resources to allow management to form a basis for the impairment review. The review is based on the Company’s intentions for development of such a project. If a project does not prove viable, all unrecoverable costs associated with the project are charged to the consolidated statement of income (loss) at the time the determination is made. Once management has determined that the development potential of the property is economically viable and the necessary permits are in place for its development, the costs of the exploration asset are reclassified to producing mineral properties.

ix. Plant and equipment

Plant and equipment are recorded at cost less accumulated amortization and impairment losses and includes amounts representing the fair value of plant and equipment at the time they were acquired. Plant and equipment includes in its purchase price, any costs directly attributable to bringing plant and equipment to the location and condition necessary for it to be capable of operating in the manner intended by management and the estimated close down and restoration costs associated with dismantling and removing the asset. Upon sale or abandonment of any plant and/or equipment, the cost

17

Notes to the Consolidated Financial Statements

Capstone Copper Corp.

Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

and related accumulated amortization and impairment losses, are written off and any gains or losses thereon are included in the consolidated statement of income (loss).

• x. Construction in progress Mineral property development and plant and equipment construction commences when approved by management and/or the Board and the Company has obtained all regulatory permissions to proceed. Development and construction expenditures are capitalized and classified as construction in progress. Once completed, the costs associated with all applicable assets related to the development and construction are reclassified to the appropriate category within mineral properties or plant and equipment.

• xi. Depletion and amortization of mineral properties, plant and equipment The carrying amounts of mineral properties, plant and equipment are depleted or amortized to their estimated residual value over the estimated economic life of the specific assets to which they relate, using the depletion or amortization methods and rates as indicated below. Estimates of residual values and useful lives are reassessed annually and any change in estimate is taken into account in the determination of the remaining amortization rate. Amortization commences on the date the asset is available for its use as intended by management.

Depletion and amortization is computed using the following rates:

Item	Methods	Rates
Producing mineral	Units of production	Proven and probable mineral reserves and a
properties		portion of mineral resources considered highly
		probable to be economicallyextracted
Deferred stripping costs	Units of production	Proven and probable mineral reserves and a
		portion of mineral resources accessible due to
		stripping activity which are considered highly
		probable to be economicallyextracted
Right-of-use assets	Straight line	Tenure of lease
Plant & equipment	Straight line,	4 – 10 years,
	units of production	Proven and probable mineral reserves and a
		portion of mineral resources considered highly
		probable to be economicallyextracted

xii. Borrowing costs

Interest and other financing costs directly related to the acquisition, development and construction, and production of qualifying assets are capitalized as construction in progress or in mineral properties until they are complete and available for use, at which time they are transferred to the appropriate category within mineral properties, plant and equipment. Borrowing costs incurred after the asset has been placed into service as well as all other borrowing costs are charged to the consolidated statement of income when incurred.

xiii. Impairment of long-lived assets

At each reporting date, the Company reviews the carrying amounts of its assets to determine whether there are any indicators of impairment. If any such indicator exists, the recoverable amount of the asset is estimated in order to determine the extent of the impairment, if any.

Where the asset does not generate cash inflows that are independent from other assets, the Company estimates the recoverable amount of the CGU to which the asset belongs. The recoverable amount is determined as the higher of fair value less direct costs to sell and the asset or CGU’s value in use. In assessing recoverable amount, the estimated future cash flows are discounted to their present value. Estimated future cash flows are calculated using estimated recoverable mineral reserves and mineral resources, estimated future commodity prices and the expected future operating, capital and

18

Capstone Copper Corp. Notes to the Consolidated Financial Statements Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

reclamation costs. The projected cash flows are affected by changes in assumptions about metal selling prices, future capital expenditures, production cost estimates, discount rates, and exchange rates. The discount rate applied to the estimated future cash flows reflects current market assessments of the time value of money and the risks specific to the asset for which the future cash flow estimates have not been adjusted. Determining the discount rate includes appropriate adjustments for the risk profile of the country in which the individual asset or CGU operates.

If the carrying amount of an asset or CGU exceeds its recoverable amount, the carrying amount of the asset or CGU is reduced to its recoverable amount and an impairment loss is recognized in the consolidated statement of income (loss). Assets that have been impaired are tested for possible reversal of the impairment whenever events or changes in circumstance indicate that the impairment may have reversed. Where an impairment subsequently reverses, the carrying amount of the asset or CGU is increased to the revised estimate of its recoverable amount, but only so that the increased carrying amount does not exceed the carrying amount that would have been determined (net of amortization or depletion) had no impairment loss been recognized for the asset or CGU in prior periods. A reversal of impairment is recognized in the consolidated statement of income (loss).

xiv. Income taxes

Current tax

Current tax for each taxable entity in the Company is based on the local taxable income at the local statutory tax rate enacted or substantively enacted at the reporting date, and includes adjustments to tax payable or recoverable in respect of previous periods.

Deferred tax

Deferred tax is accounted for using the liability method, providing for the tax effect of temporary differences between the carrying amount of assets and liabilities for financial reporting purposes and their respective tax bases.

Deferred income tax liabilities are recognized for all taxable temporary differences except where the deferred income tax liability arises from the initial recognition of goodwill, or the initial recognition of an asset or liability in a transaction that is not a business combination and, at the time of the transaction, affects neither the accounting profit or loss nor taxable profit or loss.

Deferred income tax assets are recognized for all deductible temporary differences, carry-forward of unused tax losses and unused tax credits, to the extent that it is probable that taxable profit will be available against which the deductible temporary differences, and the carry-forward of unused tax losses and unused tax credits can be utilized, and except where the deferred income tax asset related to the deductible temporary difference arises from the initial recognition of an asset or liability in a transaction that is not a business combination and, at the time of the transaction, affects neither the accounting profit or loss nor taxable profit or loss.

The carrying amount of deferred income tax assets is reviewed at each reporting date and is adjusted to the extent that it is no longer probable that sufficient taxable profit will be available to allow all or part of the asset to be utilized. To the extent that an asset not previously recognized fulfils the criteria for recognition, a deferred income tax asset is recorded.

Deferred tax is measured on an undiscounted basis using the tax rates that are expected to apply in the period when the liability is settled or the asset is realized, based on tax rates and tax laws enacted or substantively enacted at the reporting date. Deferred tax assets and liabilities are offset when they relate to income taxes levied by the same taxation authority and the Company intends to settle its current tax assets and liabilities on a net basis. Current and deferred taxes relating to items recognized directly in equity are recognized in equity and not in the consolidated statement of income (loss).

19

Capstone Copper Corp.

Notes to the Consolidated Financial Statements Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

Mining taxes and royalties are treated and disclosed as current and deferred taxes if they have the characteristics of an income tax. This is considered to be the case when they are imposed under government authority and the amount payable is calculated by reference to revenue derived (net of any allowable deductions) after adjustment for items comprising temporary differences.

xv. Taxes receivable

Taxes receivable are composed of income and mining taxes in Mexico, US and Chile and recoverable value added taxes in Canada, Mexico, US and Chile.

xvi. Embedded derivatives

Derivatives may be embedded in financial liabilities or other non-financial contracts (the “host instrument”). Embedded derivatives are treated as separate derivatives when their economic characteristics and risks are not clearly and closely related to those of the host instrument, the terms of the embedded derivative are the same as those of a stand-alone derivative, and the combined contract is designated as held for trading or at fair value, as appropriate. These embedded derivatives are measured at fair value with subsequent changes recognized in gains or losses on derivative instruments in the consolidated statement of income (loss).

xvii. Derivatives

Derivatives are initially recognized at fair value when the Company becomes a party to the derivative contract and are subsequently re-measured to fair value at the end of each reporting period. The resulting gain or loss is recognized in the consolidated statement of income immediately unless the derivative is designated and effective as a hedging instrument. Derivatives with positive fair value are recognized as assets; derivatives with negative fair value are recognized as liabilities.

Derivative contracts that are entered to economically hedge a risk exposure but are not designated as a hedging instrument for hedge accounting purposes, and are physically settled are initially and subsequently measured at fair value. Subsequent movements in fair value are recognized in the same line item in the consolidated income statement as the item the contract is economically hedging.

xviii. Financial instruments

On initial recognition, financial assets are recognized at fair value and are subsequently classified and measured at: (i) amortized cost; (ii) fair value through other comprehensive income (“FVOCI”); or (iii) FVTPL. The classification of financial assets is generally based on the business model in which a financial asset is managed and its contractual cash flow characteristics. A financial asset is measured at fair value net of transaction costs that are directly attributable to its acquisition except for financial assets at FVTPL where transaction costs are expensed. All financial assets not classified and measured at amortized cost or FVOCI are measured at FVTPL. On initial recognition of an equity instrument that is not held for trading, the Company may irrevocably elect to present subsequent changes in the investment’s fair value in OCI.

The classification determines the method by which the financial assets are carried on the consolidated statement of financial position subsequent to inception and how changes in value are recorded. Accounts receivable are measured at amortized cost with subsequent impairments recognized in the consolidated statement of income (loss). Short-term investments, concentrate receivables, promissory note receivables and derivative assets are measured at FVTPL with subsequent changes recognized in the consolidated statement of income (loss).

Short-term investments include investments in bankruptcy-remote, AAA rated money market funds, and exchange traded funds. The mark-to-market adjustments for provisional pricing changes on concentrate receivables are based on forward commodity prices of metals and are included in revenues until final settlement. Investments in marketable securities are measured at FVOCI with subsequent changes recognized in OCI. Derivative assets include zero cost collar foreign currency contracts and interest rate swap contracts and are measured at FVTPL.

20

Capstone Copper Corp. Notes to the Consolidated Financial Statements Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

Financial liabilities are designated as either: (i) FVTPL; or (ii) amortized cost. All financial liabilities are classified and subsequently measured at amortized cost except for financial liabilities at FVTPL. The classification determines the method by which the financial liabilities are carried on the consolidated statement of financial position subsequent to inception and how changes in value are recorded. Accounts payable and accrued liabilities and long-term debt are classified as amortized cost and carried on the consolidated statement of financial position at amortized cost. Derivative liabilities consist of foreign currency contracts and copper commodity contracts and are measured at FVTPL.

xix. Impairment and uncollectibility of financial assets

An ‘expected credit loss’ impairment model applies, which requires a loss allowance to be recognized based on expected credit losses. This applies to financial assets measured at amortized cost. The estimated present value of future cash flows associated with the asset is determined and an impairment loss is recognized for the difference between this amount and the carrying amount as follows: the carrying amount of the asset is reduced to estimated present value of the future cash flows associated with the asset, discounted at the financial asset’s original effective interest rate, either directly or through the use of an allowance account and the resulting loss is recognized in the consolidated statement of income (loss) for the period.

In a subsequent period, if the amount of the impairment loss related to financial assets measured at amortized cost decreases, the previously recognized impairment loss is reversed through the consolidated statement of income (loss) to the extent that the carrying amount of the investment at the date the impairment is reversed does not exceed what the amortized cost would have been had the impairment not been recognized.

xx. Deferred revenue

Deferred revenue consists of payments received by the Company in consideration for future commitments to deliver payable gold and silver contained in concentrate at contracted prices. As deliveries are made, the Company records a portion of the deferred revenue as sales, based on a proportionate share of deliveries made compared with the total estimated contractual commitment.

Interest expense on deferred revenue is recognized in finance costs when the Company identifies significant financing components related to its streaming arrangements, resulting from a difference in - the timing of the up front consideration received and delivery of the promised goods. The interest rate is determined based on the rate implicit in each streaming agreement at the date of inception or acquisition.

The initial consideration received from streaming arrangements is considered variable, subject to changes in the total gold and silver ounces to be delivered. As product is delivered, the deferred revenue amount including accreted interest will be taken into net income (loss). The draw down rate requires the use of proven and probable reserves and certain resources in the calculation that are beyond proven and probable reserves which management is reasonably confident will be transferable to reserves. Key estimates used in determining the significant financing component include the discount rate and the reserve and resources assumed for conversion. Once the discount rate has been determined, it cannot be changed. Changes to variable consideration are reflected in revenue in the consolidated statement of income (loss).

xxi. Leases

The Company assesses whether a contract is or contains a lease, at inception of a contract. The Company recognizes a right-of-use asset (“ROU asset”) and a corresponding lease liability with respect to all lease arrangements in which it is the lessee, at the commencement of the lease, with the following exceptions: (i) the Company has elected not to recognize ROU assets and liabilities for leases where the total lease term is less than or equal to 12 months, or (ii) for leases of low value. The payments for such leases are recognized in the consolidated statement of income on a straight-line basis over the lease term.

21

Notes to the Consolidated Financial Statements Years Ended December 31, 2024 and 2023

Capstone Copper Corp.

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

The ROU asset is initially measured based on the present value of lease payments, lease payments made at or before the commencement day, and any initial direct costs. They are subsequently measured at cost less accumulated amortization and impairment losses. The ROU asset is depreciated over the shorter of the lease term or the useful life of the underlying asset. The ROU asset is subject to testing for impairment if there is an indicator of impairment.

The lease liability is initially measured at the present value of lease payments that are not paid at the commencement date, discounted by using the rate implicit in the lease. If this rate cannot be readily determined, the Company uses its incremental borrowing rate. Lease payments include fixed payments less any lease incentives, and any variable lease payments where variability depends on an index or rate.

When the lease contains an extension or purchase option that the Company considers reasonably certain to be exercised, the cost of the option is included in the lease payments.

ROU assets are included in mineral properties, plant and equipment, and the lease liability is presented separately in the consolidated statement of financial position.

Variable lease payments that do not depend on an index or rate are not included in the measurement of the ROU asset and lease liability. The related payments are recognized as an expense in the period in which the triggering event occurs and are included in the consolidated statement of income (loss).

xxii. Reclamation and closure cost obligations

• A reclamation and closure cost obligation is recognized for close down, restoration and environmental rehabilitation costs (which include the dismantling and demolition of infrastructure, removal of residual materials and remediation of disturbed areas) in the financial period when the related environmental disturbance occurs, based on the estimated future costs using information available at the consolidated statement of financial position date. At the time of establishing the provision, a corresponding asset is capitalized, where it gives rise to a future benefit, and amortized over the estimated economic life of the specific assets to which they relate. The provision is discounted using a current market-based pre-tax discount rate and the unwinding of the discount is included in accretion expense in the consolidated statement of income (loss) as interest expense from discounting reclamation and closure cost obligations.

The obligation is reviewed each reporting period for changes to obligations, laws and discount rates that impact estimated costs or lives of operations. The cost of the related asset is adjusted for changes in the provision resulting from changes in the estimated cash flows or discount rate and the adjusted cost of the asset is amortized prospectively.

xxiii. Provisions

Provisions are recognized when the Company has a present obligation (legal or constructive), as a result of past events, and it is probable that an outflow of resources that can be reliably estimated will be required to settle the obligation. The amount recognized as a provision is the best estimate of the consideration required to settle the present obligation at the reporting date, taking into account the risks and uncertainties surrounding the obligation. Where the effect is material, the provision is discounted to net present value using an appropriate current market-based pre-tax discount rate.

xxiv. Post-employment benefits

Employment terms may provide for payment of a severance indemnity when an employment contract comes to an end. This is typically at the rate of one month for each year of service (subject in most cases to a cap as to the number of qualifying years of service) and based on final salary level. The severance indemnity obligation is treated as an unfunded defined benefit plan, and the calculation is based on valuations performed by an independent actuary using the projected unit credit method, which are regularly updated.

22

Notes to the Consolidated Financial Statements Years Ended December 31, 2024 and 2023

Capstone Copper Corp.

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

The obligation recognized in the balance sheet represents the present value of the severance indemnity obligation. Actuarial gains and losses are immediately recognized in other comprehensive income.

xxv. Business combinations and goodwill

• Acquisitions of businesses are accounted for using the acquisition method. The consideration transferred in a business combination is measured at fair value, which is calculated as the notional number of equity instruments that the legal subsidiary would have had to issue to the legal parent to give the owners of the legal parent the same percentage ownership in the combined entity. The results of businesses acquired during the year are included in the consolidated financial statements from the effective date when control is obtained. The identifiable assets, liabilities and contingent liabilities of the business which can be measured reliably are recorded at provisional fair values at the date of acquisition. These provisional amounts are adjusted during the measurement period, or additional assets or liabilities are recognized, to reflect new information obtained about facts and circumstances that existed as of the acquisition date and, if known, would have affected the measurement of the amounts recognized as of that date. Provisional fair values are finalized at the earlier of (i) the date as soon as the acquirer received the information it was seeking about facts and circumstances that existed as of the acquisition date or learns that more information is not available; or (ii) twelve months from the acquisition date. Acquisition related costs are expensed as incurred.

Goodwill arising in a business combination is measured as the excess of the sum of consideration transferred and the amount of any non-controlling interest over the net identifiable assets acquired and liabilities assumed.

IFRS 3 requires that one of the parties to the business combination be designated as the acquirer for accounting purposes. In making this assessment, factors such as the voting rights of the outstanding equity instruments, the corporate governance structure of the combined entity, the composition of senior management of the combined company and the relative size and net asset values of each of the companies are taken into consideration. No single factor is the sole determinant in the overall conclusion; all factors are considered in arriving at this conclusion.

If the acquired set of activities and assets meets the definition of a business, the transaction is accounted for as a business combination. Otherwise, it is classified as an asset acquisition.

Management exercises judgment in assessing whether the acquiree is capable of being conducted and managed for the purpose of providing a return. This assessment considers the inputs of the acquiree and the processes applied to those inputs that have the ability to generate outputs. If the acquired assets and liabilities do not constitute a business, the transaction is accounted for as an asset acquisition.The transaction is measured at the fair value of the identifiable assets and liabilities assumed. If the fair value of the assets and liabilities assumed cannot be reliably measured, the transaction costs will be measured based on the fair value of the consideration given. No goodwill is recognized, and transaction costs are capitalized as part of the asset cost rather than expensed.

xxvi. Non-controlling interest

Non-controlling interest is measured either at the fair value or at the non-controlling interests' proportionate share of the recognized amounts of the acquirer's identifiable net assets at the date of acquisition. The choice of measurement basis is made on a transaction by transaction basis. Net earnings for the period that are attributable to non-controlling interest are calculated based on the ownership of the minority shareholders in the subsidiary.

xxvii. Share capital

The proceeds from the exercise of stock options or warrants together with amounts previously recorded over the vesting periods are recorded as share capital.

Share capital issued for non-monetary consideration is recorded at an amount based on fair market value of the shares on the date of issue.

23

Notes to the Consolidated Financial Statements Years Ended December 31, 2024 and 2023

Capstone Copper Corp.

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

The proceeds from the issue of units are allocated between common shares and common share purchase warrants on a pro-rata basis based on relative fair values as follows: the fair value of the common shares is based on the market close on the date the units are issued and the fair value of the common share purchase warrants is determined using the Black-Scholes Option Pricing Model.

Where any group company purchases the Company’s equity share capital, the consideration paid, including any directly attributable incremental costs (net of income taxes) is deducted from equity attributable to the Company’s equity holders until the shares are cancelled or reissued. Where such ordinary shares are subsequently reissued, any consideration received, net of any directly attributable incremental transaction costs and the related income tax effects, is included in equity attributable to the Company’s equity holders.

xxviii. Share-based payments

The Company makes periodic grants of share-based awards to selected directors, officers, employees and others providing similar service under the Company’s share-based compensation plans.

Contributions to the Company’s employee share purchase plan (“ESPP”) are recorded on a payroll cycle basis as the Company’s obligation to contribute is incurred.

Pursuant to the Company’s stock option plan and Treasury Share Unit Plan ("TSUP"), the fair value of the equity-settled awards is determined at the date of the grant by using the Black-Scholes Option Pricing Model. At each reporting date prior to vesting, the cumulative expense representing the extent to which the vesting period has expired and management’s best estimate of the awards that are ultimately expected to vest is computed. The movement in cumulative expense is recognized in the consolidated statement of income (loss) with a corresponding entry within equity, against the reserve for equity settled share-based transactions. No expense is recognized for awards that do not ultimately vest.

The Company has other share-based compensation plans in the form of Deferred Share Units (“DSUs”), Restricted Share Units (“RSUs”) and Performance Share Units (“PSUs”). Units granted under these share-based compensation plans are recorded at fair value on the grant date and are adjusted for changes in fair value each reporting period until settled. The expense, and any changes which arise from fluctuations in the fair value of the grants, is recognized in share-based compensation in the consolidated statement of income (loss) with the corresponding liability recorded on the consolidated statement of financial position in provisions.

xxix. Revenue recognition

Sales of metal concentrates and cathode are recognized and revenue is recorded at market prices following the transfer of control to the customer, provided that the Company has a present right to payment, has transferred physical possession of the asset to the customer, and the customer has the significant risks and rewards of ownership. Capstone Copper satisfies its performance obligations upon delivery of the metal concentrates and cathode.

The Company’s metal concentrates are sold under a pricing arrangement where final prices are determined by quoted market prices in a period subsequent to the date of sale. Until prices are final, revenues are recorded based on forward commodity prices of metals for the expected period of final settlement. Subsequent variations in the final determination of the metal concentrate weight, assay and price are recognized as revenue adjustments as they occur until finalized. Pricing and volume adjustments, as well as refining and treatment charges, under the sales contracts are presented separately in the notes to the consolidated financial statements (Note 19).

The Company enters into copper time-spread swaps in order to manage the risk associated with final prices in terms of copper concentrate sales agreements. The associated gain/losses are recorded in Revenue in order to follow the nature of the transaction to which it is linked.

24

Capstone Copper Corp. Notes to the Consolidated Financial Statements Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

xxx. Earnings (loss) per share

Basic earnings (loss) per share is computed by dividing net income (loss) available (attributable) to common shareholders by the weighted average number of common shares outstanding during the period. The computation of diluted earnings (loss) per share assumes the conversion, exercise or contingent issuance of securities only when such conversion, exercise or issuance would have a dilutive effect on earnings (loss) per share.

The dilutive effect of convertible securities is reflected in diluted earnings (loss) per share by application of the "if converted" method. The dilutive effect of outstanding options and warrants and their equivalents is reflected in diluted earnings (loss) per share by application of the treasury stock method.

4 Adoption of New and Revised IFRS and IFRS Not Yet Effective

The accounting policies adopted in the preparation of these consolidated financial statements have been prepared on the basis of all IFRS and interpretations effective as at December 31, 2024.

New IFRS Pronouncements

Issued and effective January 1, 2024

In January 2020 and October 2022, the IASB issued amendments to International Accounting Standards 1 ("IAS 1"), Presentation of Financial Statements, to clarify that liabilities are classified as either current or non-current, depending on the rights that exist at the end of the reporting period. Liabilities should be classified as non-current if a company has a substantive right to defer settlement for at least 12 months at the end of the reporting period. Rights are in existence if covenants are complied with at the end of the reporting period. Settlement refers to the transfer to the counterparty of cash, equity instruments, or other assets or services. In addition, the amendment required entities to disclose information to enable users of the financial statements to understand the risk that non-current liabilities with covenants could become repayable within twelve months. The amendments became effective January 1, 2024, with retrospective application required on adoption. The Company assessed the impact of this amendment and determined it does not have a significant effect on the Company's financial statements.

In May 2023, the IASB issued amendments to IAS 7, Statement of Cash Flows and IFRS 7, Financial Instruments Disclosures to provide guidance on disclosures related to supplier finance arrangements that enable users of financial statements to assess the effects of these arrangements on the entity’s liabilities and cash flows and on the entity’s exposure to liquidity risk. The amendments became effective for annual periods beginning on or after January 1, 2024. The Company assessed the impact of this amendment and determined it does not have a significant effect on the Company's financial statements and has updated required disclosures accordingly.

Issued but not yet effective

In April 2024, the IASB issued a new IFRS accounting standard to improve the reporting of financial performance. IFRS 18 Presentation and Disclosure in Financial Statements replaces IAS 1 Presentation of Financial Statements. The standard will become effective January 1, 2027, with early adoption permitted. The Company is in the process of assessing the impact of this new standard on the Company's financial statements.

In May 2024, the IASB issued Amendments to IFRS 9 and IFRS 7, Amendments to the Classification and Measurement of Financial Instruments, which updated classification and measurement requirements in IFRS 9 Financial Instruments and related disclosure requirements in IFRS 7 Financial Instruments: Disclosures. The IASB clarified the recognition and derecognition date of certain financial assets and liabilities, and amended the requirements related to settling financial liabilities using an electronic payment system. It also clarified how to assess the contractual cash flow characteristics of financial assets in determining whether they solely meet the payments of principal and interest criterion, including financial assets that have environmental, social and

25

Capstone Copper Corp.

Notes to the Consolidated Financial Statements Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

corporate governance (ESG)-linked features and other similar contingent features. The IASB added disclosure requirements for financial instruments with contingent features that do not relate directly to basic lending risks and costs, and amended disclosures relating to equity instruments designated at fair value through other comprehensive income. These amendments become effective January 1, 2026 with early application permitted. The Company is in the process of assessing the impact of this new standard on the Company's financial statements.

5. Acquisition of Compania Minera Sierra Norte S.A

In August 2024, the Company completed the acquisition of Compania Minera Sierra Norte, S.A. ("Sierra Norte"). On the closing of the transaction, Inversiones Alxar S.A. and Empresas COPEC S.A., collectively the "sellers" received the equivalent of US$40 million of shares of the Company. This resulted in the issuance of 6,139,358 Capstone Copper common shares.

The fair value of Capstone Copper common shares issued was determined using the 10-day VWAP between the date the Share Purchase Agreement was signed and the closing date of the transaction and the exchange rate of 1.3809 CAD/USD.

The purchase consideration was calculated as follows:

Fair value of 6,139,358 common shares issued bythe Company	40,000
Totalpurchase consideration	40,000

Management determined that substantially all of the fair value of the gross assets acquired is concentrated in the Sierra Norte mineral development and exploration property and therefore accounted for the transaction as an asset acquisition.

For asset acquisitions settled with equity, entities are required to record the net assets acquired based on the fair value of the assets received in exchange for the equity issued, unless that fair value cannot be reliably estimated. In accordance with IFRS 2 Share-based Payments , the Company measured the transaction based on the fair value of the shares issued at the acquisition date, as this was considered the most reliable indicator of the fair value of the consideration transferred.

Fair value of assets acquired were as follows:

Fair value of assets acquired were as follows :
Cash and cash equivalents	70
Plant & equipment	11
Receivables and other assets	1,373
Mineral development and explorationproperty	38,546
Total assets acquired and liabilities assumed, net	40,000

[6.] Financial Instruments

Fair value of financial instruments

Certain of the Company's financial assets and liabilities are measured at fair value on a recurring basis and classified in their entirety based on the lowest level of input that is significant to the fair value measurement. Certain non-financial assets and liabilities may also be measured at fair value on a non-recurring basis. There are three levels of fair value hierarchy that prioritize the inputs to the valuation techniques used to measure fair value, with Level 1 having the highest priority. The levels and valuations techniques used to value the financial assets and liabilities are as follows:

26

Notes to the Consolidated Financial Statements

Capstone Copper Corp.

Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

Level 1 – Fair values measured using unadjusted quoted prices in active markets for identical instruments.

Short-term investments and marketable securities are valued using quoted market prices in active markets. Accordingly, these items are included in Level 1 of the fair value hierarchy.

Level 2 – Fair values measured using directly or indirectly observable inputs, other than those included in Level 1.

Derivative instruments are included in Level 2 of the fair value hierarchy as they are valued using pricing models or discounted cash flow models. These models require a variety of inputs, including, but not limited to, market prices, forward price curves, yield curve and credit spreads. These inputs are obtained from or corroborated with the market. Also, included in Level 2 are receivables from provisional pricing on copper concentrate and cathode sales because they are valued using quoted market prices derived based on forward curves for the respective commodities and published priced assessments.

Level 3 – Fair values measured using inputs that are not based on observable market data.

As of December 31, 2024 the Company’s classification of financial instruments within the fair value hierarchy are summarized below:

		Level 1	Level 2	Level 3	Total
Financial assets
Short-term investments	$	753 $	— $	— $	753
Copper cathode receivables(Note 7)		—	29,331	—	29,331
Copper concentrate receivables(Note 7)		—	67,646	—	67,646
Derivative assets		—	36,341	—	36,341
Investment in marketable securities(Note 10)		686	—	—	686
	$	1,439 $	133,318 $	— $	134,757
Financial liabilities
Derivative liabilities	$	— $	3,709 $	— $	3,709
Gold stream liability (Note 11)		—	—	9,900	9,900
	$	— $	3,709 $	9,900 $	13,609

As of December 31, 2023 the Company’s classification of financial instruments within the fair value hierarchy is summarized below:

summarized below:
		Level 1	Level 2	Level 3		Total
Short-term investments	$	804 $	— $		— $	804
Copper concentrate receivables_(Note 7)_		—	73,800		—	73,800
Copper cathode receivables_(Note 7)_		—	34,549		—	34,549
Derivative assets		—	35,549		—	35,549
Investment in marketable securities_(Note 10)_		824	—		—	824
	$	1,628 $	143,898 $		— $	145,526

The Company’s policy for determining when a transfer occurs between levels in the fair value hierarchy is to assess the impact at the date of the event or the change in circumstances that could result in a transfer. There were no transfers between Level 1, Level 2 and Level 3 during the year ended December 31, 2024.

27

Capstone Copper Corp.

Notes to the Consolidated Financial Statements

Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

Set out below are the Company’s financial assets by category:

		December 31, 2024
		Fair value through profit or loss Fair value through OCI Amortized cost Total
Cash and cash equivalents Short-term investments Copper cathode receivables(Note 7) Copper concentrate receivables(Note 7) Other receivables(Note 7) Derivative assets Investment in marketable securities(Note 10) Derivative assets - non-current		$ — $ — $ 131,593 $ 131,593 753 — — 753 29,331 — — 29,331 67,646 — — 67,646 — — 27,120 27,120 36,341 — — 36,341 — 686 — 686
		11,723 — — 11,723
		$ 145,794 $ 686 $ 158,713 $ 305,193
		December 31,2023
		Fair value through profit or loss Fair value through OCI Amortized cost Total
Cash and cash equivalents Short-term investments Copper concentrate receivables_(Note 7) Copper cathode receivables(Note 7) Other receivables(Note 7) Derivative assets Investment in marketable securities (Note 10)_	$ — $ — $ 126,016 $ 126,016 804 — — 804 73,800 — — 73,800 34,549 — — 34,549 — — 14,671 14,671 35,549 — — 35,549 — 824 — 824
	$ 144,702 $ 824 $ 140,687 $ 286,213

Set out below are the Company’s financial liabilities by category:

	December 31, 2024
	Fair value through profit or loss Amortized cost Total
Accounts payable and accrued liabilities Long-term debt(Note 14) Due to related party(Note 12) Derivative liabilities Working capital facilities (Note 11) Payable on purchase of non-controlling interest(Note 11) Gold stream obligation(Note 11)	$ — $ 330,183 $ 330,183 — 821,756 821,756 — 247,075 247,075 3,709 — 3,709 — 117,049 117,049 — 44,488 44,488 9,900 — 9,900
	$ 13,609 $ 1,560,551 $ 1,574,160

28

Capstone Copper Corp.

Notes to the Consolidated Financial Statements

Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

	December 31,2023
	Fair value through profit or loss Amortized cost Total
Accounts payable and accrued liabilities Long-term debt_(Note 14) Due to related party(Note 12) Derivative liabilities Working capital facilities(Note11) Payable on purchase of non-controlling interest(Note 11) Gold stream obligation(Note 11)_	$ — $ 272,277 $ 272,277 — 998,655 998,655 — 195,871 195,871 16,788 — 16,788 — 25,618 25,618 — 42,389 42,389 7,100 — 7,100
	$ 23,888 $ 1,534,810 $ 1,558,698

There have been no changes during the year ended December 31, 2024, in how the Company categorizes its financial assets and liabilities by fair value through profit or loss, fair value through OCI, or amortized cost.

At December 31, 2024 and 2023, the carrying amounts of accounts receivable not arising from sales of metal concentrates and cathodes, accounts payable and accrued liabilities, and other current assets and current liabilities are considered to be reasonable approximations of their fair values due to the short-term nature of these instruments. The fair value of the Company’s long-term debt and amounts due to related party are approximated by its carrying value since the contractual interest rates are comparable to current market interest rates.

Financial instruments and related risks

The Company’s activities expose it to financial risks of varying degrees of significance which could affect its ability to achieve its strategic objectives for growth and shareholder returns. The principal financial risks to which the Company is exposed are commodity price risk, credit risk, foreign exchange risk, liquidity risk and interest rate risk. The Board of Directors has overall responsibility for the establishment and oversight of the Company’s risk management framework and reviews the Company’s policies on an ongoing basis. There have been no significant changes in the Company’s exposure to these financial risks.

Derivative instruments

As at December 31, 2024, the Company’s derivative financial instruments are composed of copper quotational pricing contracts, copper zero-cost collar contracts, interest rate swap contracts, and foreign currency zero-cost collars ("ZCC").

The Company operates on an international basis and therefore foreign exchange risk exposures arise from transactions denominated in a foreign currency. The Company's foreign exchange risk arises primarily with respect to the Chilean Peso ("CLP"), the Chilean Unidad de Fometo ("UF"), the Mexican Peso ("MXN") and the Canadian dollar ("CDN"). The UF is an artificial inflation-indexed monetary unit used in Chile to denominate certain contracts. The Company's cash flows from Chilean and Mexican operations are exposed to foreign exchange risk, as commodity sales are denominated in US dollars and a certain portion of operating and capital expenses is denominated in local currencies. As such, the Company may use foreign exchange forward and swap contracts and ZCCs to mitigate changes in foreign exchange rates.

The Company's outstanding derivative instruments as of December 31, 2024, are as follows:

29

Notes to the Consolidated Financial Statements Years Ended December 31, 2024 and 2023

Capstone Copper Corp.

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

Type	Contract description	Remaining term	Put strike	Call strike / Fixed rate	Notional tonnes / Quantity
Interest rate	Fixed-for-floating swaps adjusted SOFR	January 2025 - March 2030	—	1.015%	$361.3 million USD
Interest rate	Floor options adjusted SOFR	January 2025 - September 2025	—	0%	$361.3 million USD
Foreign currency	Foreign exchange ZCC - CLP	January - December 2025	900.00 930.00	981.50 1,069.00	97.1 billion CLP
Foreign currency	Foreign exchange ZCC - CLP	January - December 2026	850.00	965.00 1,000.00	21.2 billion CLP
Foreign currency	Foreign exchange ZCC - CAD	January - December 2025	1.36 1.37	1.42 1.44	$20.4 million CAD
Foreign currency	Foreign exchange ZCC - MXN	January - December 2025	18.75 19.50	22.00 23.20	375.4 million MXN
Commodity	CommodityZCC - Copper	January - December 2025	4.15	4.83 4.87	20,000 tonnes
Quotational pricing contracts	Copper time-spread swaps	January - March 2025	—	—	8,966 tonnes

Set out below are the Company’s derivative financial assets and financial liabilities:

	December 31, 2024 December 31,2023
Derivative financial assets: Foreign currency contracts Interest rate swap contracts Copper commodity contracts Quotational pricing contracts	$ —$ 2,139 8,080 16,845 10,545 — 5,993 —
~~Sh~~ ~~h~~ ~~t~~ Total derivative financial assets - current Interest rate swapcontracts	24,618 18,984 11,723 16,565
Total derivative financial assets - non-current Derivative financial liabilities:	$ 11,723$ 16,565 2,369 1,503 — 13,484 — 1,801
Foreign currency contracts Copper commodity contracts Quotationalpricingcontracts
Total derivative financial liabilities - current	$ 2,369$ 16,788
Foreign currencycontracts	1,340 —
Total derivative financial liabilities - non-current	$ 1,340 $ —

30

Capstone Copper Corp.

Notes to the Consolidated Financial Statements

Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

Set out below are the Company’s realized and unrealized gains and losses on derivative financial instruments:

		Year ended December 31,	Year ended December 31,
		2024	2023
Unrealized gain/(loss) on derivative financial instruments:
Foreign currency contracts	$	(4,343)$	2,505
Copper commodity contracts		24,029	29,425
Interest rate swapcontracts		**(13,606) **	(14,820)
Total unrealized gain on derivative financial instruments		6,080	17,110
Realized (loss)/gain on derivative financial instruments:
Foreign currency contracts		(1,597)	243
Copper commodity contracts		(26,641)	(35,869)
Interest rate swapcontracts		21,808	21,591
Total realized loss on derivative financial instruments		**(6,430) **	(14,035)
Total unrealized and realized (loss)/gain on derivative
financial instruments:	$	(350) $	3,075

* Amounts above do not include unrealized and realized gains and losses related to the Company's quotational pricing contracts as these amounts are included in pricing and volume adjustments on copper concentrate sales (Note 19).

31

Capstone Copper Corp.

Notes to the Consolidated Financial Statements Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

Valuation methodologies for Level 2 financial instruments

The key inputs to the valuation of the concentrate receivable balance are payable metal and future metal prices. The Company’s metal concentrate sales contracts are subject to provisional pricing with the selling price adjusted at the end of the quotational period based on final settlement weights and assays. At each reporting date, the Company’s accounts receivable on these contracts are marked-to-market based on a quoted forward price for which there exists an active commodity market.

Derivative assets and liabilities consist of the mark-to-market adjustments to record the fair values of the outstanding zero cost collar and forward foreign currency contracts, commodity swaps, interest rate swaps quotational pricing contracts. At December 31, 2024 derivative assets consist of zero cost collar and forward foreign currency contracts and interest rate swap contracts. Derivative liabilities consist of zero cost collar foreign currency contracts, copper commodity contracts and quotational pricing contracts. All of the Company’s derivative assets and liabilities are marked-to-market based on a valuation model which uses quoted observable inputs.

Commodity price risk

The Company is exposed to commodity price risk since its revenues are derived from the sale of metals, the prices for which have been historically volatile. The Company sometimes manages this risk by entering into forward sale or commodity swap derivative agreements with various counterparties to mitigate price risk when management believes it is a prudent decision.

Credit risk

The Company is exposed to credit risk through its trade receivables on concentrate sales with various counterparties under the terms of offtake agreements. The Company manages this risk by requiring provisional payments of at least 90 percent of the value of the concentrate shipped. Value added taxes receivable are not considered to be subject to significant credit risk as these balances are receivable from government authorities.

The credit risk on cash and cash equivalents is limited because the funds are held with banks with high credit ratings as assigned by international credit rating agencies. Similarly, the credit risk on the short-term investments is limited as the investments are in highly liquid, bankruptcy-remote, AAA rated money market funds, and exchange traded funds.

As at December 31, 2024, the Company’s maximum exposure to credit risk is the carrying value of its cash and cash equivalents, short-term investments, receivables, derivative assets and investment in marketable securities.

Foreign exchange risk

The Company is exposed to foreign exchange risk as the Company’s operating costs will be primarily in US dollars, Canadian dollars (“C$”), Mexican pesos and Chilean pesos, while revenues are received in US dollars. Hence, any fluctuation of the US dollar in relation to these currencies may affect the profitability of the Company and the value of the Company’s assets and liabilities. From time to time, the Company enters into foreign exchange hedging arrangements to mitigate the risk of exposure to fluctuating foreign currency exchange rates.

32

Capstone Copper Corp.

Notes to the Consolidated Financial Statements

Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

As at December 31, 2024, the Company is exposed to foreign exchange risk through the following financial assets and liabilities denominated in currencies other than the functional currency of the applicable subsidiary :

		Canadian dollar	Mexicanpeso	Chileanpeso
Cash	$	475 $	2,711 $	21,173
Receivables and other current assets		7,491	1,655	32,530
Deposits and other long-term assets		—	103	667
Total assets		7,966	4,469	54,370
Accountspayable and accrued liabilities		7,624	10,124	42,241
Total liabilities		7,624	10,124	42,241
Net assets(liabilities)	$	342 $	(5,655) $	12,129

The following sensitivity analysis for foreign currency risk relates solely to financial assets and liabilities that were outstanding at December 31, 2024 and each sensitivity calculation assumes all other variables are held constant. The analysis does not reflect the overall effect that changes in market variables would have on the Company's results.

Based on the above net exposures at December 31, 2024, a 10% appreciation in the Canadian dollar against the US dollar would result in a $0.03 million decrease in the Company’s income before taxes. A 10% appreciation of the Mexican peso against the US dollar would result in a $0.6 million increase in the Company’s income before taxes. A 10% appreciation of the Chilean peso against the US dollar would result in a $1.2 million decrease in the Company’s income before taxes.

Liquidity risk

The Company has in place a planning and budgeting process to help determine the funds required to ensure the Company has the appropriate liquidity to meet its operating and growth objectives. The Company maintains adequate cash balances and credit facilities to meet short and long-term business requirements, after taking into account cash flows from operations and believes that these sources will be sufficient to cover the likely short and long-term cash requirements. While at December 31, 2024 the Company’s current liabilities are in excess of its current assets, the Company has sufficient liquidity to cover any short and long-term obligations. The Company’s cash is held in business accounts with Canadian Tier 1 or international banks with a S&P Global Rating rating of A- or better. The cash is available on demand for the Company’s programs. In addition, the Company’s short-term investments are highly liquid and are readily convertible to cash. The following table summarizes the Company’s financial liabilities based on contractual undiscounted payments, including estimated interest. The carrying amounts may differ as financial liabilities are measured at amortized cost or fair value in the statement of financial position.

As of December 31, 2024, the Company’s liabilities that have contractual maturities are as follows:

33

Capstone Copper Corp.

Notes to the Consolidated Financial Statements

Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

		Total	2025	2026	2027	2028	After 2028	After 2028
Accounts payable and accrued
liabilities_(i)_	$	330,183 $ 330,183 $		— $	— $	—	$	—
Long term debt_(ii)_	$	643,909	125,127	120,207	56,686	98,876		243,013
Revolving credit facility_(iii)_	$	385,764			385,764
Due to related party_(Note 12)_	$	73,795	10,110	9,677	9,244	8,818		35,946
Working capital facilities_(Note 11)_	$	117,049	117,049	—	—	—		—
Derivative liabilities	$	3,709	3,709
Leases and other contracts	$	298,315	64,734	57,805	49,805	43,684		82,287
	$	1,852,724 $ 650,912 $		187,689 $	501,499 $	151,378	$	361,246

i. Amounts above do not include payments related to the Company's reclamation and closure cost obligations, other long- term provisions (Note 17) and other liabilities without contractual maturities.

ii. Excluding deferred financing costs and purchase price accounting fair value adjustments.

iii. The interest on the corporate loan facility has been included in this table based on the current balance, however, the RCF can be drawn down further or repaid, which would impact the interest payments in the period above.

Interest rate risk

The Company’s long-term debt is based on variable interest rates. Variable interest rates are currently based on US dollar SOFR plus a variable margin. From time to time, the Company has entered into derivative contracts to manage this risk. Based on the amount drawn on the Mantoverde Development Project Facility, Cost Overrun Facility, Due to Related Party and Revolving Credit Facility and balances of $491.6 million, $56.8 million, $171.9 million and $326 million at December 31, 2024, respectively, a 0.1% increase in the SOFR rates would result in a $1.1 million decrease in annual net income before taxes . The Company is also exposed to interest rate risk with respect to the interest it earns on its cash balances and short-term investments. A 0.1% change in interest rates would have a nominal effect on the Company’s interest income.

7 Receivables

Details are as follows:

Details are as follows:
	December	31, 2024	December	31,2023
Copper concentrate	$	67,646	$	73,800
Copper cathode		29,331		34,549
Value added taxes and other taxes receivable		19,083		16,345
Income taxes receivable		4,585		7,953
Other receivables		27,120		14,671
Total receivables	$	147,765	$	147,318

During Q2 2024, the Company came to an agreement with the issuer of the surety bond who held title to a C$10 million trust account designated for payment of future costs related to the Minto obligation, in which these funds would be released to Capstone Copper over the course of the next year. As at December 31, 2024, the remaining trust balance of C$3.7 million (US$ 2.6 million) remains in other receivables.

8. Inventories

Details are as follows:

34

Capstone Copper Corp.

Notes to the Consolidated Financial Statements

Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

	December	31, 2024	December	31,2023
Current:
Materials and consumables	$	112,674	$	82,478
Ore stockpiles		12,546		14,003
Work-in-progress		20,961		21,477
Finished goods - copper cathode		20,708		16,400
Finishedgoods - copper concentrate		42,559		15,255
Total inventories - current	$	209,448	$	149,613
Non-current:
Ore stockpiles (Note 10) (i)		16,366		8,474
Total inventories - non-current	$	16,366	$	8,474

• i. Non-current inventory is composed of ore stockpiles at the Mantos Blancos and Mantoverde mines.

During the year ended December 31, 2024, concentrate and cathode inventories recognized as production costs, including depletion and amortization, amounted to $1,369.7 million (2023 – $1,251.3 million).

During the year ended December 31, 2024, the Company recorded a write-downs of $1.2 million related to Mantoverde's and Pinto Valley's cathode inventories which were recorded as production costs and depletion and amortization.

During the year ended December 31, 2023, the Company recorded write-downs of $1.9 million related to Mantoverde's cathode inventories and Pinto Valley's copper concentrate and supplies inventories which were recorded as production costs and depletion and amortization.

35

Notes to the Consolidated Financial Statements Years Ended December 31, 2024 and 2023

Capstone Copper Corp.

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

9. Mineral Properties, Plant and Equipment

Details are as follows:

Details are as follows:
		Mineralproperties
	Depletable Non- depletable Subject to amortization Producing mineral properties Deferred stripping Mineral exploration and development properties Plant & equipment Right of use assets
At January 1, 2024, net Acquisition of Sierra Norte_(Note 5) Additions Disposals Rehabilitation provision adjustments(Note 17)_ Reclassifications and transfers Depletion and amortization	$ 1,672,727 $ 307,681 $ 837,812 $ 1,162,403 $ 134,096 $ 1,171,538 $ 5,286,257 — — 38,546 11 — — 38,557 — 185,212 40,698 14,705 158,335 330,841 729,791 — — (37) (8,752) — — (8,789) (21,229) — — — — — (21,229) 29,157 43,619 (28,074) 1,327,368 (10,702) (1,330,562) 30,806 (89,710) (79,551) — (141,750) (26,133) — (337,144)
At December 31, 2024, net	$ 1,590,945 $ 456,961 $ 888,945 $ 2,353,985 $ 255,596 $ 171,817 $ 5,718,249
At December 31, 2024: Cost Accumulated amortization and impairment	$ 2,190,012 $ 664,682 $ 888,945 $ 4,118,301 $ 397,600 $ 171,817 $ 8,431,357 (599,067) (207,721) —(1,764,316) (142,004) —(2,713,108)
Net carrying amount	$ 1,590,945 $ 456,961 $ 888,945 $ 2,353,985 $ 255,596 $ 171,817 $ 5,718,249

The Company achieved commercial production at MVDP in September 2024. In making this determination, management considered a number of factors, including completion of substantially all the construction development activities in accordance with design and a production ramp up period where mill throughput, in terms of tonnes of ore, equalled an average of 75% of nameplate capacity over a 30-day period. With this achievement, on September 30, 2024 $1,110.8 million of construction in progress, including capitalized finance costs, was reclassified to mineral properties, plant & equipment and right of use assets, as applicable. Depletion and amortization on MVDP commenced on October 1, 2024.

During the year ended December 31, 2024, the Company capitalized $76.4 million (2023 - $72.2 million) of finance costs to construction in progress, at a weighted average interest rate of 7.8%. Interest expense is no longer being capitalized, as the MVDP has now been fully capitalized.

36

Capstone Copper Corp.

Notes to the Consolidated Financial Statements Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

		Mineralproperties
At January 1, 2023, net Additions Disposals Rehabilitation provision adjustments_(Note 17)_ Reclassifications and transfers Depletion and amortization	$ 1,709,157 $ 137,563 $ 819,225 $ 1,052,252 $ 91,743 $ 896,371 $ 4,706,311 10,222 218,379 45,001 6,185 72,976 468,224 820,987 — — (19) (300) — (345) (664) 6,741 — — — — — 6,741 36,427 9,076 (26,395) 189,664 (16,060) (192,712) — (89,820) (57,337) — (85,398) (14,563) — (247,118)
At December 31, 2023, net	$ 1,672,727 $ 307,681 $ 837,812 $ 1,162,403 $ 134,096 $ 1,171,538 $ 5,286,257
At December 31, 2023: Cost Accumulated amortization and impairment Net carryingamount	$ 2,182,946 $ 469,961 $ 837,812 $ 2,881,315 $ 246,775 $ 1,171,538 $ 7,790,347 (510,219) (162,280) — (1,718,912) (112,679) — (2,504,090)
	$ 1,672,727 $ 307,681 $ 837,812 $ 1,162,403 $ 134,096 $ 1,171,538 $ 5,286,257

The Company’s exploration costs were as follows:

The Company’s exploration costs were as follows:
		Year ended December 31,
		2024	2023
Exploration capitalized to mineral properties	$	9,270$	2,400
Greenfield exploration expensed to the statement
of income(loss)		1,133	4,961
	$	10,403$	7,361

Exploration capitalized to mineral properties during the period ended December 31, 2024 and 2023, relates to brownfield exploration at the Mantoverde, Mantos Blancos and Cozamin mines. Greenfield exploration expenses during the period ended December 31, 2024 and 2023 related primarily to exploration efforts in Chile.

As at December 31, 2024, construction in progress primarily relates to expansionary and sustaining capital at the Mantos Blancos and Pinto Valley mines. Capital expenditures committed as at December 31, 2024, but not yet incurred, is $37.1 million (December 31, 2023 - $32.9 million).

As at December 31, 2024, the Revolving Credit Facility ("RCF") (Note 14) was secured by the Pinto Valley, Cozamin and Mantos Blancos mineral properties, and plant and equipment with a net carrying value of $2,133.1 million (December 31, 2023 – $2,027.0 million).

37

Notes to the Consolidated Financial Statements

Capstone Copper Corp.

Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

10. Other Assets

Details are as follows:

Details are as follows:
	December	31, 2024	December	31,2023
Current:
Prepaids	$	24,418	$	36,612
Deposits		4,976		4,710
Other		2,676		2,800
Total other assets - current	$	32,070	$	44,122
Non-current:
Prepayments	$	18,045	$	18,045
Ore stockpiles_(Note 8)_		16,366		8,474
Value added taxes and other taxes receivable		1,155		—
Investments in marketable securities		686		824
Deposits		43		390
Other		2,043		3,102
Total other assets - non-current	$	38,338	$	30,835

11. Other Liabilities

Details are as follows:

Details are as follows:
	December	31, 2024	December	31,2023
Current:
Current portion of share-based payment obligations (Note 17)	$	7,714	$	8,455
Current portion of payable on purchase of NCI		44,488		—
Current portion of deferred revenue_(Note 15)_		11,389		12,139
Current portion of Minto obligation_(Note 17)_		18,049		23,943
Working capital facilities		117,049		25,618
Current portion of Gold stream obligation(Note 15)		2,644		—
Other		4,954		1,257
Total other liabilities - current	$	206,287	$	71,412
Non-current:
Retirement benefit liabilities	$	5,083	$	13,036
Non-current portion of payable on purchase of NCI		—		42,389
Gold stream obligation(Note 15)		7,256		7,100
Other		—		1,603
Total other liabilities - non-current	$	12,339	$	64,128

Working capital facilities

During 2024, two of the Company's Chilean subsidiaries entered into a series of short-term working capital facilities with a weighted-average interest rate of 6.53% for the purpose of working capital management. As at December 31, 2024, the aggregate balance of the facilities was $117.0 million, including accrued interest of $2.0 million.

38

Notes to the Consolidated Financial Statements Years Ended December 31, 2024 and 2023

Capstone Copper Corp.

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

Payable on purchase of Non-Controlling Interest ("NCI")

On March 24, 2021, the Company completed a Share Purchase Agreement (the “SPA”) with Korea Resources Corporation (“KORES”) to purchase KORES’ 30% ownership interest in Acquisition Co. for cash consideration of $120 million and non-cash consideration of $32.4 million, enabling the Company's consolidation of 100% ownership in the Santo Domingo property.

As at December 31, 2024, an unsecured liability of $44.5 million (December 31, 2023 - $42.4 million) has been recognized in the consolidated statement of financial position equal to the discounted amount of the remaining $45 million of cash consideration to be paid to KORES on March 24, 2025. The discounted amount of the remaining $45 million will be accreted up to its face value at 5% per annum. During the year ended December 31, 2024, $2.2 million (December 31, 2023 - $2.0 million) of accretion was recorded in finance expense in the consolidated statements of income (loss).

Gold stream obligation

During the fourth quarter of 2023, the Company recognized an obligation related to a completion test on the Santo Domingo gold stream. The fair value of the embedded derivative at December 31, 2024 was a liability of $9.9 million (December 31, 2023 - $7.1 million).

12. Non-Controlling Interest

As part of the financing for the MVDP, Mitsubishi Materials Corporation ("MMC") acquired a 30% non-controlling interest in Mantoverde S.A., and agreed to make an additional $20 million contingent payment upon satisfaction of certain technical requirements relating to the expansion of the tailings storage facility.

In addition to the contingent arrangement, MMC agreed to provide a $60 million Cost Overrun Facility ("COF") in exchange for additional offtake of copper concentrate production under a 10-year contract (Note 25). The COF initially carried an interest rate of 3-month US$ LIBOR plus 1.70% and amortizing over 37 quarters from September 30, 2024. As a result of Interest Rate Benchmark Reform, the Company completed the transition from LIBOR to an adjusted secured overnight financing rate ("SOFR") with MMC. The transition resulted in a variable rate of SOFR compounded daily to a 3-month period plus 0.2616% per annum, with margins unchanged.

In addition to the COF, MMC advanced its pro-rata share of funding requests, which amounted to an additional $171.9 million, to Mantoverde in the form of shareholder loans forming part of the financing for the MVDP. Total funds advanced by MMC at December 31, 2024, including accrued interest of $18.4 million (December 31, 2023 - $6.0 million), was $247.1 million (December 31, 2023 - $195.9 million). The interest rate at December 31, 2024 was three-month adjusted SOFR of 4.65% (December 31, 2023 - 4.28%) plus 2.65% (December 31, 2023 - 2.65%) payable on the principal balance.

39

Capstone Copper Corp.

Notes to the Consolidated Financial Statements

Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

Details of the due to related party balances are as follows:

		COF		Shareholder Loans	Shareholder Loans		Total
Balance, December 31, 2022	$		60,000	$	—	$	60,000
Additions			—		129,900		129,900
Interest expense			4,277		5,971		10,248
Interest repayments			(3,168)		—		(3,168)
Unpaid interest atyear-end	$		(1,109)				(1,109)
Balance, December 31, 2023	$		60,000	$	135,871	$	195,871
Additions			—		42,000		42,000
Repayment			(3,243)		—		(3,243)
Interest expense			4,354		12,447		16,801
Interest repayments			(4,354)		—		(4,354)
Balance, December 31, 2024	$		56,757	$	190,318	$	247,075
Less: currentportion			(6,486)		—		(6,486)
Non-currentportion	$		50,271	$	190,318	$	240,589

Included in accounts payable is $5.4 million owed to Mitsubishi Materials Corporation ("MMC"), a related party, (December 31, 2023 - nil).

		Year ended December 31,	Year ended December 31,
		2024	2023
Opening balance	$	405,535$	428,639
Share of comprehensive (loss) profit for the
period		2,668	(23,104)
Non-controllinginterest	$	408,203$	405,535

40

Capstone Copper Corp.

Notes to the Consolidated Financial Statements

Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

The table below presents a condensed summary of the financial information for Mantoverde S.A. shown on a 100% basis:

	December 31, 2024 December 31,2023
Cash and cash equivalents Mineral properties, plant and equipment Other assets Total assets Accounts payable and accrued liabilities Debt Amounts due to related parties Deferred income tax liabilities Other liabilities Total liabilities	76,921 77,947 3,037,204 2,803,818 172,537 137,139
	3,286,662 3,018,904
	132,653 97,362 497,260 526,579 1,212,253 1,031,078 396,542 389,741 218,223 152,952
	2,456,931 2,197,712

	Year ended December 31, 2024 2023
Net Revenue Production costs Depletion and amortization Income (loss) from mining operations Realized and unrealized gain on derivative instruments Finance expense Income tax and other expenses Net (loss) income Profit (loss) attributable to owners of Mantoverde S.A. Profit (loss) attributable to the non-controlling interest Profit (loss) profit for the period Share of comprehensive (loss) profit for the period Opening balance Share of comprehensive (loss) profit for the period Non-controlling interest	$ 490,939$ 286,073 (357,928) (304,087) (86,288) (59,473)
	46,723 (77,487) 1,590 2,717 (25,390) (843) (13,032) (1,233)
	$ 9,891$ (76,846)
	6,923 (53,792) 2,968 (23,054)
	$ 9,891$ (76,846)
	$ 2,668$ (23,104)
	$ 405,535$ 428,639 2,668 (23,104)
	$ 408,203$ 405,535

41

Notes to the Consolidated Financial Statements

Capstone Copper Corp.

Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

13. Lease Liabilities

Details are as follows:

		Total
Balance, December 31, 2022	$	103,897
Additions		69,497
Payments		(42,727)
Reclassifications (i)		(3,300)
Accretion expense		8,679
Foreign currencytranslation adjustment		453
Balance, December 31, 2023	$	136,499
Additions (Note 9)		158,335
Payments		(62,689)
Accretion expense		15,658
Foreign currencytranslation adjustment		(834)
Balance, December 31, 2024	$	246,969
Less: currentportion		(46,646)
Non-currentportion	$	200,323

i. Relates to an advance payment made during the year ended December 31, 2022, reclassified against the lease liability.

14. Long-Term Debt

Details of the long-term debt balances are as follows:

		Mantoverde
		Development		Revolving Credit
		Project Facility		Facility	Total
Balance, December 31, 2022	$	527,498	$	71,577 $	599,075
Additions		—		504,000	504,000
Repayments		—		(105,000)	(105,000)
Financing fee amortization		(919)		1,089	170
Deferred financing fee		—		(2,310)	(2,310)
Loss on debt extinguishment			$	2,721	2,721
Balance, December 31, 2023	$	526,579	$	472,077 $	998,656
Additions		—		189,500	189,500
Repayments		(28,398)		(337,500)	(365,898)
Financing fee amortization		(921)		548	(373)
Deferred financingfee		—		(129)	(129)
Balance, December 31, 2024	$	497,260	$	324,496 $	821,756
Less: currentportion		(85,748)		—	(85,748)
Non-currentportion	$	411,512	$	324,496 $	736,008

Mantoverde Development Project Facility

In order to fund the construction of MVDP, the Company secured a senior secured amortizing project debt facility in an aggregate amount of $520 million (the "MVDP Facility", comprising the “Covered Facility” $250 million, the

42

Capstone Copper Corp.

Notes to the Consolidated Financial Statements Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

“Uncovered Facility” $210 million, and the “ECA Direct Facility” $60 million). These project finance facilities are subject to affirmative, financial and restrictive covenants that include obligations to maintain the security interests in favour of the lenders over substantially all of the Mantoverde assets, insurance coverage, maintenance of offtake agreements, environmental and social compliance, restrictions on new financial indebtedness, distributions and dispositions, and compliance with certain financial ratios. As at December 31, 2024, the Company was in compliance with these covenants.

At December 31, 2024, $491.6 million was outstanding on the MVDP Facility with $5.7 million recognized as an adjustment to record the debt at its fair value as required as part of the accounting for the business combination with Mantos (December 31, 2023 - $520 million and $6.6 million). This fair value adjustment amortizes down to zero over the duration of the MVDP Facility.

Interest on borrowings under the MVDP Facility is payable quarterly. As a result of Interest Rate Benchmark Reform, the Company has completed the transition from LIBOR to an adjusted SOFR for its MVDP debt financing Facility. The transition resulted in a variable rate of SOFR compounded daily to a 3-month period plus 0.2616% per annum, with margins unchanged (i.e., 1.65% for the Covered Facility and, with respect to the Uncovered Facility, a rate of 3.75% and, with respect to the ECA Direct Facility, a rate of 4.00% pre-completion of the MVDP, and decreasing to 3.50% and 3.75% respectively post-completion of the MVDP). Pursuant to the Covered Facility, an export credit agency guaranteed premium of 2.05% per annum is also payable quarterly and calculated over amounts outstanding under the Covered Facility. The MVDP Facility is secured by a comprehensive security package covering substantially all of the Mantoverde assets. The amortization period of the MVDP Facility commenced on September 30, 2024 and continues until December 2030 for the Uncovered Facility and December 2032 for the Covered Facility and ECA Direct Facility.

To mitigate the risk of movements in interest rates, and in compliance with a covenant in the MVDP Facility, a subsidiary of the Company entered into a fixed-for-floating SOFR swap at 1.015% with floating rate of daily SOFR, compounded to a quarterly rate, plus 0.2616% adjustment. The fixed-for-floating swap notional represents the notional amount as of the reporting period. The derivative instruments are a series of quarterly contracts, with notional amounts in line with planned quarterly balances based on expected project finance debt drawdown and expected amortization.

Revolving Credit Facility

On September 22, 2023, Capstone Copper amended its RCF to increase the aggregate commitments from $600 million to $700 million and extended the maturity from May 2026 to September 2027. The Amended RCF bears interest on a sliding scale of adjusted term SOFR plus a margin of 2.000% to 2.875%. This amendment was treated as an extinguishment of the previous debt facility, resulting in $2.7 million of deferred financing fees being written off during the year ended December 31, 2023.

The interest rate at December 31, 2024 was one-month adjusted term SOFR of 4.58% plus 2.125% (December 2023 - adjusted term SOFR of 5.46% plus 2.125%) with a standby fee of 0.478% (2023 – 0.48%) payable on the undrawn balance (adjustable in certain circumstances).

The RCF is secured against the present and future real and personal property, assets and undertakings of Capstone Copper other than defined excluded entities which comprise the Mantoverde mine property and the Santo Domingo development project property.

The RCF requires Capstone Copper to maintain certain financial ratios relating to debt and interest coverage. Capstone Copper was in compliance with these covenants as at December 31, 2024.

Surety Bonds

As at December 31, 2024, the Company has in place seven surety bonds totaling $254.5 million to support various reclamation and other obligation bonding requirements. These comprise $182.0 million securing reclamation obligations at Pinto Valley, $4.0 million provided as security as part of a power supply agreement at

43

Capstone Copper Corp.

Notes to the Consolidated Financial Statements Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

Pinto Valley, $1.8 million related to the construction of a port for the Santo Domingo development project in Chile, $27.0 million at Mantoverde, and $39.7 million at Mantos Blancos, respectively, securing reclamation obligations. The Company is also an Indemnitor to the surety bond provider for the surety bond obligations of Minto Metals Corp. ("Minto Metals") ( Note 17 ).

15. Deferred Revenue

Silver Precious Metals Purchase Arrangement ("Silver PMPA")

On February 19, 2021, a subsidiary of the Company, concluded the Silver PMPA with Wheaton Precious Metals ("Wheaton") whereby Capstone Copper received an upfront cash consideration of $150 million against delivery of 50% of the silver production from the Cozamin mine until 10 million ounces have been delivered, thereafter dropping to 33% of silver production for the remaining life of mine. In addition to the upfront cash consideration of $150 million, as silver is delivered under the terms of the Silver PMPA, the Company receives cash payments equal to 10% of the spot silver price at the time of delivery for each ounce delivered to Wheaton. The Silver PMPA is effective December 1, 2020. Wheaton has been provided certain security in support of the Company’s obligations under the Silver PMPA.

The Company recorded the upfront cash consideration received of $150 million as deferred revenue and recognizes amounts in revenue as silver is delivered under the Silver PMPA. Capstone Copper determines the amortization of deferred revenue to the consolidated statements of income (loss) on a per unit basis using the estimated total number of silver ounces expected to be delivered over the life of the Cozamin mine. The amortization rate requires the use of proven and probable mineral reserves and certain mineral resources which management is reasonably confident will be transferred to mineral reserves. The Company estimates the current portion of deferred revenue based on deliveries anticipated over the next twelve months. During the year ended December 31, 2024, the Company delivered 641,378 ounces (2023 - 572,312 and ounces) of silver to Wheaton under the Silver PMPA.

The agreement with Wheaton includes a completion test which requires the completion of the paste backfill plant by December 31, 2023 and production of at least 105,000 cubic meters of suitable paste backfill for use in the underground operations at Cozamin over a consecutive 90-day period. During Q2 2024, the Company reached an agreement with Wheaton to extend the completion test period of the use of suitable paste backfill in the underground operations to September 30, 2024. During September 2024, the completion test requirements were successfully met.

Gold Precious Metals Purchase Arrangement ("Gold PMPA")

On April 21, 2021, a subsidiary of the Company received an early deposit of $30 million ("the Early Deposit") in relation to the Gold PMPA at Santo Domingo with Wheaton effective March 24, 2021. If completion has not been achieved on or before the third anniversary date of receiving the early deposit, and early deposit delay payment will be triggered that would require the Company to sell and deliver 104 ounces of refined gold per month until the earlier of: the month completion is achieved, the month in which the early deposit is repaid to Wheaton or the month which refined gold is first sold and delivered to Wheaton. In the fourth quarter of 2023, the Company recorded an obligation under the gold stream of $7.1 million. As of December 31, 2024, the value of the obligation was $9.9 million.

Additional deposits of $260 million are to be received under the Gold PMPA over the Santo Domingo development project construction period, subject to sufficient financing having been obtained to cover total expected capital expenditures and other customary conditions, for total consideration of $290 million (collectively "the Deposit"). Wheaton will receive 100% of the gold production from the Company's Santo Domingo development project until 285,000 ounces have been delivered, thereafter dropping to 67% of the gold production for the remaining life of mine.

44

Notes to the Consolidated Financial Statements

Capstone Copper Corp.

Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

In addition to the deposits of $290 million, as gold is delivered under the terms of the Gold PMPA, Capstone Copper receives cash payments equal to 18% of the spot gold price at the time of delivery for each ounce delivered to Wheaton, until the Deposit has been reduced to zero, thereafter increasing to 22% of the spot gold price upon delivery. Wheaton has been provided certain security in support of the Company’s obligations under the Gold PMPA. The initial term of the Gold PMPA is 20 years.

Details of changes in the balance of deferred revenue are as follows:

		Silver PMPA	Gold PMPA	Total
Balance, December 31, 2022	$	135,494 $	33,492 $	168,986
Accretion expense		7,528	2,277	9,805
Recognized as revenue on delivery of silver		(13,707)	—	(13,707)
Variable consideration adjustment		(5,326)	—	(5,326)
Balance, December 31, 2023	$	123,989 $	35,769 $	159,758
Accretion expense		7,120	2,432	9,552
Recognized as revenue on delivery of silver		(16,089)	—	(16,089)
Variable consideration adjustment		4,185	—	4,185
Balance, December 31, 2024	$	119,205 $	38,201 $	157,406
Less: currentportion(Note 11)		(11,389)	—	(11,389)
Non-currentportion	$	107,816 $	38,201 $	146,017

Consideration from the PMPAs is considered variable, as silver and gold stream revenues can be subject to cumulative adjustments when the number of ounces to be delivered under the contracts changes. As a result of changes in the Company's mineral reserve and resource estimate at the Cozamin mine during the fourth quarter of 2024, the amortization rate by which deferred revenue is drawn down into income was adjusted and, as required, a variable rate adjustment was made for all prior period deferred revenues since the inception of the Silver PMPA. The variable consideration adjustment resulted in a decrease in revenue of $4.2 million and an increase of finance expense of $0.2 million for the year ended December 31, 2024 (December 31, 2023 - increase in revenue of $5.3 million and a decrease in finance expense of $0.1 million.

16. Income Taxes

Details of the income tax expense (recovery) are as follows:

	Year ended December 31, 2024
	Canada US Mexico Chile Other Total
Current income and mining tax expense (recovery) Deferred income tax expense(recovery)	$ — $ 1,619 $ 35,133 $ 1,460 $ (458) $ 37,754 2,926 10,296 4,972 (8,408) — 9,786
Income tax expense (recovery)	$ 2,926 $ 11,915 $ 40,105 $ (6,948) $ (458) $ 47,540

45

Capstone Copper Corp.

Notes to the Consolidated Financial Statements

Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

	Year ended December 31, 2023
	Canada US Mexico Chile Other Total
Current income and mining tax expense Deferred income tax (recovery) expense	$ — $ 1,103 $ 10,692 $ 1,791 $ 469 $ 14,055 (14,698) 2,221 15,876 16,269 — 19,668
Income tax (recovery) expense	$ (14,698) $ 3,324 $ 26,568 $ 18,060 $ 469 $ 33,723

Income tax expense differs from the amount that would result from applying the Canadian federal and provincial income tax rates to earnings before income taxes. These differences result from the following items:

										Year ended December 31,	Year ended December 31,	Year ended December 31,	Year ended December 31,
										2024		2023
Income (loss)			before income taxes						$	133,414	$	(91,003)
Canadian federal andprovincial income tax rates										27.00 %		27.00	%
Income tax expense (recovery) based on the above rates Increase (decrease) due to: Adoption of Chilean Mining Royalty legislation										36,022 —		(24,571) 31,367
Non-deductible expenditures										1,885		6,118
Increase in			Mexican mining royalty tax							2,507		—
Effects of different statutory tax rates on (income) losses of subsidiaries										(2,907)		3,190
Mexican and Chilean mining						royalty taxes				(1,963)		1,434
Current period losses for					which deferred tax
assets (were) were not recognized Adjustments to tax estimates in prior								years		4,786 (3,383)		13,486 4,708
Foreign exchange and other						translation
adjustments Other										4,952 5,641		(5,757) 3,748
Income tax expense									$	47,540	$	33,723
Current income and mining tax expense Deferred income tax expense									$	37,754 9,786	$	14,055 19,668
Income tax expense									$	47,540	$	33,723

During the fourth quarter of 2024, Mexico's Senate approved an increase in the Special Tax on Mining Profits from 7.5% to 8.5% and an increase on the Extraordinary Tax on Revenues from the Sale of Gold, Silver and Platinum from 0.5% to 1%.

In June 2024, Canada enacted the Global Minimum Tax ("GMT") that was developed within the framework of the Organization for Economic Co-operation and Development ("OECD")'s Pillar Two Model rules, with effect from January 1, 2024. In May 2024, Barbados enacted the Corporation Top-up Tax (Amendment) Act, 2024 and is in force and effective from January 1, 2024. The legislation introduces a 15% Qualifed Domestic Minimum Top-Up Tax ("QDMTT") that applies for fiscal years starting on or after January 1, 2024. To date, the government of Chile and the government of Mexico, have not indicated whether they intend to enact GMT legislation. The United States has indicated that they do not intend to enact GMT legislation. For the three months and year ended December 31, 2024, the Company has not accrued any GMT as part of its current income tax expense.

46

Capstone Copper Corp.

Notes to the Consolidated Financial Statements Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

The Company applied the mandatory temporary exception to the recognition and disclosure for deferred taxes related to OECD Pillar Two income taxes under IAS 12 Income Taxes . No current taxes related to the GMT have been recorded, as the Company falls within the safe harbour provisions provided within the framework.

During the third quarter of 2023, Chile passed the new Mining Royalty into law with effect from January 1, 2024. The new Mining Royalty Law contains two components, an ad-valorem and a mine operating margin component. The ad-valorem component is applicable to companies with annual sales of copper that are higher than the equivalent of 50,000 metric tonnes of fine copper ("MTFC"). If the company's "Adjusted Mining Operational Taxable Income", or "RIOMA' as it is referred to in Chile, is negative, the ad-valorem component to be paid will be calculated by subtracting the negative amount of the RIOMA from the ad-valorem component. The ad-valorem component of the Mining Royalty will be deductible when determining First Category, or corporate, income taxes, however, not for purposes of determining RIOMA. The ad-valorem component is capped at 1% of gross copper venues.

The mine operating margin ("MOM") component will vary depending on the sales volume of the company, along with whether more than 50% of its annual production is copper. Mining companies which derive more than 50% of their income from copper sales and exceed 50,000 MTFC will pay a tax rate that fluctuates between 8% and 26%. The MOM component will not be applicable in cases where the RIOMA is negative and is calculated based on total mine operating margin, which includes silver and gold by-products. The Mining Royalty includes depreciation as a fully deductible operational expense, however, unlike the First Category, or corporate, deduction, it is on a non-accelerated basis.

The Mining Royalty includes a maximum limit to the total tax burden, consisting of (1) the corporate income tax paid in the respective year, (2) the Mining Royalty (both ad-valorem and MOM components) and (3) withholding taxes to which owners would be subject to upon distribution of dividends. The calculation of withholding taxes assumes a 100% distribution, and is calculated considering a tax burden of 35% of net taxable income, i.e., an additional 8% to the First Category rate of 27%. The Mining Royalty establishes that when the sum of three component exceeds 46.5% of RIOMA, then the Mining Royalty would be adjusted in such a way that it does not exceed the limit.

For the year ended December 31, 2023, the Company recognized a deferred income tax expense of $31.4 million in respect of the Mining Royalty, and a corresponding increase to deferred income tax liabilities. In determining this charge, the Company has made assumptions regarding the timing of future cash outflows, the timing of when temporary differences will reverse and the MOM rate that will be in effect during the year the temporary differences reverse.

The Company has determined that the ad-valorem component of the Mining Royalty is not considered an income tax under IAS 12 - Income Taxes as it is not calculated on a profitability measure and therefore does not give rise to deferred income taxes, rather, it will be recognized as incurred.

Continuity of the changes in the Company’s net deferred tax position is as follows:

						2024		2023
Net deferred tax liability, January 1 Deferred income tax expense for the year Deferred income tax charged (recovered) comprehensive income Other				against other	$ $	576,824 9,786 749 (1,051)	$ $	558,881 19,668 (1,307) (418)
Net deferred tax liability,December 31					$	586,308	$	576,824

47

Capstone Copper Corp.

Notes to the Consolidated Financial Statements

Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

The composition of the deferred tax assets and liabilities are as follows:

	December 31, 2024 December 31, 2023
Deferred income tax assets: Non-capital losses Capital leases and other liabilities Inventories and other Derivative instruments Mineral properties, plant and equipment Deferred revenue Asset retirement obligation Deferred income tax assets Deferred income tax liabilities: Mineral properties, plant and equipment Inventories and other Derivative instruments Deferred revenue Deferred income tax liabilities	$ 138,724 $ 109,637 110,206 79,288 2,430 10,260 — 387 3,004 2,192 11,698 7,339 24,797 25,768
	290,859 234,871
	861,259 793,829 4,183 4,954 3,464 — 8,261 12,912
	877,167 811,695
Net deferred income tax liability	$ 586,308 $ 576,824
Breakdown of net deferred income tax liability: Asset Liability	$ (50,475) $ (53,401) 636,783 630,225
	$ 586,308 $ 576,824

Deferred taxes are recorded on a net basis by legal entity where the right of offset exists (as shown in the table below) while the above table discloses the consolidated assets and liabilities on a gross basis.

The composition of the deferred tax expense is as follows:

The composition of the deferred tax expense	is as follows:
		Year ended December 31,
		2024	2023
Deferred income tax assets:
Non-capital losses Accounts payable and other current items	$	(29,087) (30,617)	$	(27,193) (14,837)
Derivatives and other		8,218		184
Asset retirement obligation		971		1,135
Deferred income tax liabilities:
Mineral properties, plant and equipment		66,618		63,654
Inventories and other Derivative instruments Deferred revenue		(770) 3,464 (9,011)		486 (5,582) 1,821
Deferred tax expense	$	9,786	$	19,668

At December 31, 2024, $50.5 million (2023 – $53.4 million) was recognized as a deferred tax asset based on management’s forecasts of future income in certain entities.

48

Capstone Copper Corp.

Notes to the Consolidated Financial Statements

Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

As at December 31, 2024, the Company had tax losses of $140.1 million (2023 – $98.0 million) with a tax benefit of $37.8 million (2023 – $26.5 million) that are not recognized as deferred tax assets. The Company recognizes the benefit of tax losses only to the extent that it anticipates future taxable income that can be reduced by the tax losses. The $47.0 million (2023 – $47.0 million) of the tax losses for which a tax benefit has not been recorded expire from 2031 to 2044 while the remaining $93.1 million (2023 – $51.0 million) of the tax losses have no expiry date.

The summary of unrecognized deductible temporary differences is as follows:

The summary of unrecognized deductible	temporary differences is as follows:
		Year ended December 31,
		2024		2023
Accounts payable and other	$	21,908	$	11,628
Mineral properties, plant and equipment		48,676		39,511
Investments		—		1,887
Reclamation and closure cost obligations		79,345		91,802
	$	149,929	$	144,828

As at December 31, 2024, the Company has $149.9 million (2023 – $144.8 million) of deductible temporary differences with a tax benefit of $36.0 million (2023 – $33.5 million) that are not recognized as deferred tax assets. It is not probable that future taxable income will be available against which the Company can utilize these benefits. The majority of these benefits do not have an expiry date.

As at December 31, 2024, the Company has not recognized deferred taxes on approximately $343.0 million 2023 – $537.0 million) of retained earnings of its foreign subsidiaries, as it is the Company’s intention to invest these earnings to maintain and expand the business of these subsidiaries. As at December 31, 2024, the Company has $44.7 million (2023 – $26.7 million) of capital losses that are unrecognized and available to be utilized against future capital gains.

49

Notes to the Consolidated Financial Statements

Capstone Copper Corp.

Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

17 Provisions

The reclamation and closure cost obligations relate to the operations of the Pinto Valley, Cozamin, Mantos Blancos and Mantoverde mines.

Details of changes in the balances are as follows:

Details of changes in the balances are as	follows:	follows:
	Reclamation
		& closure			Other	Share-based
		cost	Minto		closure		payment
	obligations		obligation	provisions		obligations		Total
Balance, January 1, 2024	$	214,197 $	41,186	$	35,360	$	9,787 $ 300,530
Share-based payment expense
(Note 18)		—	—		—		9,662	9,662
Change in estimates		(14,398)	(300)		7,965		—	(6,733)
Interest expense from discounting
obligations		8,876	1,599		1,638		—	12,113
Settlements during the period		(952)	(19,730)		(6,160)		(7,899)	(34,741)
Currency translation adjustments		(13,257)	(1,327)		(4,618)		(1,105)	(20,307)
Balance, December 31, 2024	$	194,466 $	21,428	$	34,185	$	10,445 $ 260,524
Less: Current portion included within
other liabilities(Note 11)		—	(18,049)		—		(7,714)	(25,763)
Totalprovisions - non-current	$	194,466 $	3,379	$	34,185	$	2,731 $ 234,761
Balance, January 1, 2023	$	199,739 $	—	$	29,929	$	40,464 $ 270,132
Additions		—	53,923		—		—	53,923
Share-based payment expense
(Note 18)		—	—		—		15,044	15,044
Change in estimates		6,741	(2,035)		8,467		—	13,173
Interest expense from discounting
obligations		8,960	—		1,437		—	10,397
Settlements during the year		(1,243)	(10,407)		(4,791)		(46,071)	(62,512)
Currencytranslation adjustments		—	(295)		318		350	373
Balance,December 31,2023	$	214,197 $	41,186	$	35,360	$	9,787 $ 300,530
Less: Current portion included within
other liabilities_(Note 11)_		—	(23,943)		—		(8,455)	(32,398)
Totalprovisions - non-current	$	214,197 $	17,243	$	35,360	$	1,332 $ 268,132

The change in estimates during the year ended December 31, 2024, related to reclamation and closure cost obligations of $27.7 million (2023 – $6.7 million) were recorded as a decrease to mineral properties of $21.2 million (2023 – $6.7 million) (Note 9) and to other income of $6.5 million (2023 – $nil).

The Company expects that the cash outflows in respect to the balances accrued as at the financial statement dates will occur proximate to the dates these long-term assets are retired.

In view of uncertainties concerning reclamation and closure cost obligations, the ultimate costs could be materially different from the amounts estimated. The estimate of future reclamation and closure cost obligations is also subject to change based on amendments to applicable laws and legislation. Future changes in reclamation and closure cost obligations, if any, could have a significant impact on the Company.

Minto Obligation

50

Notes to the Consolidated Financial Statements Years Ended December 31, 2024 and 2023

Capstone Copper Corp.

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

In June 2019, the Company completed the sale of its 100% interest in the Minto mine to Pembridge Resources PLC ("Pembridge"). In conjunction with the sale, Minto Metals Corp. ("Minto Metals") posted a surety bond to cover potential future reclamation liabilities. While this surety bond is outstanding, the Company remains an indemnitor to the surety bond provider for Minto Metal's surety bond obligations in the Yukon.

In May 2023, Minto Metals announced that it had ceased all operations at the Minto mine located within the Selkirk First Nation's territory in central Yukon Territories and that the Yukon Government assumed care and control of the site. As Minto Metals had defaulted on the surety bond, in Q2 2023 Capstone Copper recognized an initial liability of approximately $55 million (C$72 million) related to the Company's obligations towards the issuer of the surety bond. In estimating the provision, the Company has made assumptions regarding the timing of cash outflows and discount rate. Due to the associated uncertainty of the timing of cash outflows, it is possible that estimates may need to be revised. The Company's exposure on calls against the surety bond is capped at approximately C$72 million therefore the timing of cash outflows and changes in the C$:US$ exchange rate are the largest contributors to the measurement uncertainty.

As at December 31, 2024, the Company has made cumulative payments of $30.1 million (December 31, 2023 - $10.4 million) to the Yukon Government for reclamation work performed. As at December 31, 2024, the Company has reclassified $18 million to other liabilities.

18. Share Capital

Authorized

An unlimited number of common voting shares without par value.

On February 8, 2024, the Company and Orion Fund JV Limited, Orion Mine Finance Fund II LP and Orion Mine Finance (Master) Fund I-A LP (collectively, “Orion”) closed a bought deal financing with a syndicate of underwriters ("the Offering"). Pursuant to the Offering, the Underwriters purchased on a bought deal basis from the Company and Orion, a total of 68,448,000 common shares of Capstone Copper (“Common Shares”) at a price of C$6.30 per Common Share (the "Offering Price"), which included the exercise in full of the Underwriters' overallotment option of 8,928,000 Common Shares from the Company, for aggregate gross proceeds under the Offering of C$431,222,400.

In connection with the Offering, 56,548,000 Common Shares were issued by the Company for gross proceeds to the Company of C$356.3 million and 11,900,000 shares were sold by Orion for gross proceeds to Orion of C$75.0 million. The Company did not receive any proceeds from the secondary sale, which were paid directly to Orion.

In August 2024, the Company acquired Compania Minera Sierra Norte, S.A. ("Sierra Norte"). On the closing of the transaction, the equivalent of US$40 million of shares of the Company was issued. This resulted in the issuance of 6,139,358 Capstone Copper common shares. Refer to Note 5 for further details on the acquisition.

Stock options

Pursuant to the Company’s amended stock option plan, directors may authorize the granting of options to directors, officers and employees of the Company to a maximum of 10% of the issued and outstanding common shares at the time of grant, with a maximum of 5% of the Company’s issued and outstanding shares reserved for any one person annually. Options granted under the plan have a term not to exceed five years, with the vesting term at the discretion of the Board. The exercise price of options granted are denominated in C$.

The continuity of stock options issued and outstanding is as follows:

51

Capstone Copper Corp.

Notes to the Consolidated Financial Statements

Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

			Options		Weighted average
			outstanding	exerciseprice(C$)
Outstanding,December	31,	2023	3,542,343	$	4.16
Granted			958,560		7.25
Exercised			(1,944,593)		2.65
Expired			(20,388)		6.76
Forfeited			(105,615)		6.72
Outstanding,December	31,	2024	2,430,307	$	6.46

As at December 31, 2024, the following options were outstanding and outstanding and exercisable:

Exerciseprices(C$) $3.47 - $3.90 $4.43 - $4.72 $5.08 - $5.79 $6.00 - $6.97 $7.25

Outstanding Outstanding& exercisable Number of options Weighted average exercise price(C$) Weighted average remaining life(years) Number of options Weighted average exercise price(C$) Weighted average remaining life(years) 88,811 3.80 1.6 78,237 3.84 1.4 33,548 4.55 2.7 13,045 4.43 2.9 202,637 5.11 2.1 138,280 5.13 2.1 1,202,131 $ 6.34 2.7 528,053 $ 6.45 2.4 903,180 $ 7.25 4.2 — $ — — 2,430,307 $ 6.46 3.2 757,615 $ 5.90 2.3

During the year ended December 31, 2024, the total fair value of options granted was $2.9 million (2023 – $2.0 million) and had a weighted average grant-date fair value of C$4.59 (2023 – C$3.00) per option. During the year ended December 31, 2024, the weighted average share price of the 1.9 million options exercised during the period was C$9.60 (2023 - 4.4 million options at $6.19).

The fair values of the stock options granted were estimated on the respective grant dates using the Black-Scholes Option Pricing Model. Volatility was determined using the Company’s historical daily volatility over the expected life of the options.

Weighted average assumptions used in calculating the fair values of options granted during the year were as follows:

Weighted average assumptions used in calculating the follows:	fair values of options granted during the year were	fair values of options granted during the year were	as
	Year ended December 31,
	2024	2023
Risk-free interest rate	3.35 %	3.01	%
Expected dividend yield	nil		nil
Expected share price volatility	60 %	63	%
Expected forfeiture rate	6.51 %	6.35	%
Expected life	3.7years	3.9years

Option pricing models require the input of subjective assumptions including the expected price volatility. Changes in the assumptions can materially affect the fair value estimate, and therefore the existing models do not necessarily provide a reliable single measure of the fair value of the Company’s stock options.

Other share-based compensation plans

Under the Share Unit Plan (“SUP”), the Company grants PSUs and RSU. PSUs granted to executives vest after three years and are subject to a performance measure of 0% to 200%. RSUs granted to executives and employees vest 1/3 per year starting on the first anniversary of the grant date. Under the Director’s Deferred

52

Notes to the Consolidated Financial Statements Years Ended December 31, 2024 and 2023

Capstone Copper Corp.

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

Share Unit Plan, the Company grants DSUs DSUs granted to directors vest upon issuance but are not redeemable until cessation of service on the Board.

Under the SUP, PSU and RSU obligations can be settled in cash, shares delivered from a Share Purchase Trust or a combination thereof, as determined by and at the discretion of the Human Resources and Compensation Committee of the Company’s Board of Directors. DSU obligations, under the Director’s Deferred Share Unit Plan, are redeemed in cash.

Deferred Share Units

The Company has established a Deferred Share Unit Plan (the “DSU Plan”) whereby DSUs are issued to directors as long-term incentive compensation. DSUs issued under the DSU Plan are fully vested upon issuance and entitle the holder to a cash payment only following cessation of service on the Board of Directors. The value of the DSUs when converted to cash will be equal to the number of DSUs granted multiplied by the quoted market value of a Capstone Copper common share at the time the conversion takes place.

Compensation expense related to DSUs is recorded immediately and is adjusted at each reporting period to reflect the change in quoted market value of the Company’s common shares. DSU obligations, under the DSU Plan, are redeemed in cash.

Restricted Share Units and Performance Share Units

The Company has established a Share Unit Plan (the “Plan”) whereby RSUs and PSUs are issued as long-term incentive compensation. RSUs are issued to employees. PSUs are issued to executives.

RSUs issued under the Plan entitle the holder to a cash payment, shares delivered from a Share Purchase Trust or a combination thereof, at the end of the vesting period equal to the number of RSUs granted, multiplied by the quoted market value of a Capstone Copper common share on the completion of the vesting period. RSUs granted to employees vest 1/3 per year over their three-year term.

PSUs issued under the Plan entitle the holder to a cash payment, shares delivered from a Share Purchase Trust or a combination thereof, at the end of a three-year performance period equal to the number of PSUs granted, adjusted for a performance factor and multiplied by the quoted market value of a Capstone Copper common share on the completion of the performance period. The performance factor can range from 0% to 200% and is determined by comparing the Company’s total shareholder return to those achieved by a peer group of companies.

Compensation expense related to RSUs and PSUs is recorded over the three-year vesting period. The amount of compensation expense is adjusted at each reporting period to reflect the change in quoted market value of the Company’s common shares, the number of RSUs and PSUs expected to vest, and in the case of PSUs, the expected performance factor. RSU and PSU obligations, under the Share Unit Plan, can be settled in cash, shares delivered from a Share Purchase Trust or a combination thereof, as determined by and at the discretion of the Human Resources and Compensation Committee of the Company’s Board of Directors.

During the year ended December 31, 2024, the total fair value of DSUs, RSUs, and PSUs granted under the SUP was $8.9 million (2023 – $6.6 million), and had a weighted average grant-date fair value of C$7.25 (2023 – C$6.02) per unit.

PSUs and RSU’s awarded to executives have been granted under a Treasury Share Unit Plan (“TSUP”). Treasury PSUs granted to executives vest after three years and are subject to a performance measure of 0% to 200%. Treasury RSUs granted to executives vest 1/3 per year starting on the first anniversary of the grant date. Canadian based executives are able to retain the PSUs and RSUs after vesting and elect when to redeem the units within 10 years of the grant date. Under the TSUP, PSU and RSU obligations can be settled in shares from treasury or cash, at the election of the Company.

During the year ended December 31, 2024, the total fair value of units granted under the TSUP $4.6 million (2023 – $2.4 million), and had a weighted average grant-date fair value of C$4.53 (2023 – C$3.99) per unit.

53

Notes to the Consolidated Financial Statements

Capstone Copper Corp.

Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

Weighted average assumptions used in calculating the fair values of units granted under the TSUP during the year were as follows:

year were as follows:
	Year ended December 31,
	2024	2023
Risk-free interest rate	3.08 %	2.78	%
Expected dividend yield	nil		nil
Expected share price volatility	61 %	64	%
Expected forfeiture rate	1.66 %		nil
Expected life	8.2years	8.7years

No Capstone Copper shares were purchased by the Share Purchase Trust during the year ended December 31, 2024 and 2023.

The continuity of DSUs, RSUs, and PSUs issued and outstanding is as follows:

			Share Unit Plan	Share Unit Plan		Treasury Share	Unit Plan
			DSUs	RSUs	PSUs	RSUs	PSUs
Outstanding,December	31,	2023	957,331	1,487,114	80,017	876,550	1,853,278
Granted			104,486	1,384,052	179,870	246,469	1,193,880
Forfeited			—	(226,034)	—	(46,648)	(138,131)
Settled			(536,723)	(721,445)	(97,940)	(241,887)	(947,184)
Outstanding,December	31,	2024	525,094	1,923,687	161,947	834,484	1,961,843

Share-based compensation expense:

Share-based compensation expense:
		Year ended December 31,
		2024	2023
Share-based compensation expense related to
stock options	$	2,113$	1,656
Share-based compensation expense related to
RSUs and PSUs (TSUP)		4,238	2,305
Share-based compensation expense related to
DSUs,RSUs and PSUs(SUP)		9,662	15,044
Total share-based compensation expense	$	16,013$	19,005

54

Notes to the Consolidated Financial Statements Years Ended December 31, 2024 and 2023

Capstone Copper Corp.

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

19. Revenue

The Company’s revenue breakdown by metal is as follows:

The Company’s revenue breakdown by metal is as follows:
		Year ended December 31,
		2024	2023
Copper concentrate	$	1,200,203$	943,610
Copper cathode		420,289	419,245
Silver		40,208	41,333
Gold		22,487	12,907
Molybdenum		1,990	5,086
Zinc		—	252
Totalgross revenue		1,685,177	1,422,433
Less: treatment and selling costs		(73,584)	(69,410)
Less:pricingand volume adjustments		**(12,371) **	(7,512)
Revenue	$	1,599,222$	1,345,511

Pricing and volume adjustments represent mark-to-market adjustments on initial estimates of provisionally priced sales, offsetting realized and unrealized changes to fair value for time swaps, and adjustments to originally invoiced weights and assays.

Revenue from a related party, included in the above amounts, for the twelve months ended December 31, 2024, included $106.9 million related to deliveries under MMC's offtake contract. Customer details are as follows:

Year ended December 31,

						2024							2023
		Pinto		Mantos						Pinto	Mantos
		Valley	Blancos		Mantoverde		Cozamin			Valley	Blancos	Mantoverde		Cozamin
		USA		Chile		Chile		Mexico	Total	USA	Chile		Chile		Mexico	Total
Customer #1	$	—	$	48,490	$	228,280	$	— $ 276,770$		—	$ 102,979	$	282,055	$	— $ 385,034
Customer #2		—		332,458		1,712		—	334,170	—	321,751		—		—	321,751
Customer #3		90,740		—		4,934		92,093	187,767	71,303	—		—		131,275	202,578
Customer #4		221,812		—		106,912		—	328,724	185,992	—		3,798		—	189,790
Customer #5		91,056		14,076		90,830		—	195,962	—	—		—		—	—
Customer #6		—		—		—		—	—	—	—		—		—	—
Other (i)		125,998		6,159		73,781		155,846	361,784	221,738	695		5,426		95,421	323,280
Total gross
revenue	$	529,606	$	401,183	$	506,449	$	247,939 $ 1,685,177$		479,033	$ 425,425	$	291,279	$	226,696 $ 1,422,433

• i. No other single customer meets the 10% disclosure threshold.

55

Notes to the Consolidated Financial Statements

Capstone Copper Corp.

Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

20. Earnings (Loss) Per Share

Earnings (loss) per share, calculated on a basic and diluted basis, is as follows:

		Year ended December 31,	Year ended December 31,
		2024	2023
Earnings (loss) per share
Basic and diluted		0.11	(0.15)
Net earnings (loss)
Net earnings (loss) attributable to common
shareholders - basic and diluted	$	82,906$	(101,672)
Weighted average shares outstanding- basic		750,633,211	693,520,515
Dilutive securities
Stock options		717,068	—
TSUP units		898,329	—
Weighted average shares outstanding- diluted		752,248,608	693,520,515
Potentially dilutive securities excluded (as anti-
dilutive)
Stock options		—	3,542,343
TSUP units		—	2,729,828

For periods where the Company records a loss, Capstone Copper calculates diluted loss per share using the basic weighted average number of shares. If the diluted weighted average number of shares were used, the result would be a further reduction in the loss per share.

21. Compensation of Key Management Personnel

During the year, compensation of key management personnel was as follows:

			Year ended December 31,	Year ended December 31,
			2024	2023
Salaries and short-term benefits		$	9,588	$	8,426
Share-basedpayments			8,789		11,118
		$	18,377	$	19,544

Capstone Copper’s key management personnel have authority and responsibility for planning, directing and controlling the activities of the Company and consist of its directors and senior officers.

22. Supplemental Cash Flow Information

56

Capstone Copper Corp.

Notes to the Consolidated Financial Statements

Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

The changes in non-cash working capital items are composed as follows:

		Year ended December 31,	Year ended December 31,
		2024	2023
Receivables	$	(11,395)$	46,843
Inventories		(40,015)	(445)
Other assets		23,167	2,829
Accounts payable and accrued liabilities		17,414	(101,234)
Other liabilities		7,628	(38,628)
Net change in non-cash workingcapital	$	(3,201) $	(90,635)

The changes in other non-cash items are composed as follows:

		Year ended December 31,	Year ended December 31,
		2024	2023
VAT receivable	$	(1,155)$	(82)
Other non-current assets		(6,347)	705
Other non-current liabilities		**(5,449) **	2,025
Net change in other non-cash items	$	(12,951) $	2,648

In August 2024, the Company completed the acquisition of Compania Minera Sierra Norte, S.A. ("Sierra Norte") which resulted in a significant non-cash financing and investing transaction. Refer to Note 5 for further information regarding the transaction.

Below is a reconciliation of depreciation in operating cash-flows in the consolidated statement of cash-flows to the Mineral Properties, Plant and Equipment (Note 9 ):

Mineral Properties, Plant and Equipment (Note 9):
		Year ended December 31,
		2024		2023
Depreciation and depletion per mineral
properties, plant and equipment(Note 9)		337,144		247,118
Depreciation included in general and
administrative expense		625		378
Depreciation included in care and maintenance		2,105		548
Non-cash inventory recovery of write-down		—		(1,311)
Change in depreciation and depletion capitalized
to inventory, capitalized stripping and
construction inprogress		**(23,720) **		(9,849)
Depreciation and depletion expense	$	316,154	$	236,884

Below is a reconciliation of additions in investing cash-flows in the consolidated statement of cash-flows to the Mineral Properties, Plant and Equipment (Note 9):

		Year ended December 31,	Year ended December 31,
		2024	2023
Additions / expenditures on mining interests
(Note 9)		(729,791)	(820,987)
Lease additions_(Note 13)_		158,335	69,497
Changes in workingcapital and other items (i)		63,166	73,221
Expenditures on mininginterests_(ii)_	$	(508,290) $	(678,269)

i. The changes in working capital relate to the movement in accounts payable and prepayments related primarily to capital expenditures on the MVDP.

57

Capstone Copper Corp. Notes to the Consolidated Financial Statements Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

• ii. Includes $60.3 million of capitalized finance costs for the twelve months ended December 31, 2024 (2023 - $61.5 million).

23. Capital Management

The Company’s capital consists of the items included in shareholders’ equity, long-term debt net of cash and cash equivalents, short-term investments, and investments in marketable securities. The Company manages its capital structure and makes adjustments in light of changes in economic conditions and the risk characteristics of the Company’s assets.

To effectively manage its capital requirements, the Company has in place a planning and budgeting process to help determine the funds required to ensure the Company has the appropriate liquidity to meet its operating and growth objectives. The Company ensures that there are sufficient committed loan facilities to meet its short-term business requirements, taking into account its anticipated operational cash flows and its cash and cash equivalents, short-term deposits and investments in marketable securities.

The RCF and MVDP debt facility contain various affirmative, financial and restrictive covenants, including: interest coverage ratios, leverage ratios, other financial ratios and obligations to maintain the security interests in favour of the lenders over substantially all of the respective project’s property and shares, insurance coverage, maintenance of offtake agreements, compliance with environmental and social matters, restrictions on new financial indebtedness, distributions and dispositions, as well as effecting certain hedging strategies as detailed in the lending agreement. As at December 31, 2024, the Company was in compliance with the covenants and requirements of the RCF and MVDP debt facility.

24. Commitments

Royalty Agreements

Under the terms of the December 2003 option agreement with Grupo Minera Bacis S.A. de C.V. (“Bacis”), a subsidiary of the Company assumed a 100% interest in the Cozamin mine with a 3% net smelter royalty paid to Bacis on all payable metal sold from production on the property covered by the agreement.

In connection with the financing of the Mantos Blancos Debottlenecking Development Project, Mantos Copper S.A. entered into a royalty agreement with Southern Cross Royalties Limited ("Southern Cross"). Southern Cross is entitled to a 1.525% net smelter royalty on copper production. The royalty is for a period initially through January 1, 2035 that may be extended by Southern Cross at its sole discretion through the duration of the mining rights and is subject to the Company's option to reduce the royalty amount by 50% any time after January 1, 2023, subject to a one-time payment.

Agreement with Osisko Bermuda Limited ("Osisko")

Pursuant to a long-term streaming agreement made in 2015, that covers the life of mine, the Company delivers 100% of the payable silver sold by Mantos Blancos to Osisko Bermuda Limited ("Osisko"). Osisko pays a cash price of 8% of the spot price at the time of each delivery, in addition to an upfront acquisition price previously paid. After 19.3 million ounces of silver have been delivered under the agreement, the stream will be reduced to 40%. Mantos Blancos has delivered 6.4 million silver ounces since contract inception until December 31, 2024.

Agreement with Jetti Resources, LLC (“Jetti”)

Under the terms of the 2019 agreement, the Company is required to make quarterly royalty payments to Jetti based on an additional net profits calculation resulting from cathode production at the Pinto Valley mine. The initial term of the agreement is ten years, renewable for 5-year terms thereafter.

58

Notes to the Consolidated Financial Statements Years Ended December 31, 2024 and 2023

Capstone Copper Corp.

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

Offtake agreements

The Company entered into an offtake agreement with Boliden Commercial AB (“Boliden”) for 75,000 tonnes of copper concentrates in each contract year. The offtake agreement expires ten years after the commencement of commercial production at the MVDP, subject to potential extension if less than 750 thousand tonnes of copper concentrates have been delivered at the contract term.

MMC agreed to provide a $60 million COF in exchange for additional offtake of copper concentrate production under a 10-year contract. The offtake agreement includes Mantoverde agreeing to sell 30% of its annual copper production per year delivered for its equivalent in copper concentrates, plus an additional amount of 30,000 tonnes of copper concentrate as a result of fully utilizing the COF that was provided by MMC in connection with the MVDP. The agreement between MMC and Mantoverde to sell 30% of its annual copper production is for the duration of the Mantoverde commercial mine life. The amount payable for copper is based on average LME prices, subject to certain terms (Note 12).

Other

The Company has contractual agreements extending until 2026 and 2033 to purchase water for operations at Mantos Blancos.

The Company has contractual agreements for the purchase of power for operations at Mantos Blancos and Mantoverde, extending until 2038 and 2039, respectively. The Company also entered into a contractual agreement for access to a power transmission plant for the Santo Domingo development project, for a period of 12 years from the date the transmission facility construction was completed, in Q4 2023.

The Company has contractual arrangements at Mantos Blancos for the purchase of 152,000 tonnes of acid in 2025, 160,000 tonnes in 2026, and 60,000 tonnes per year between 2027 and 2030. The Company has contractual arrangements at Mantoverde for the purchase of 498,000 tonnes of acid in 2025 and 38,000 tonnes in 2026.

59

Notes to the Consolidated Financial Statements

Capstone Copper Corp.

Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

25. Other Income (Expense)

Details are as follows:

		Year ended December 31,	Year ended December 31,
		2024	2023
Care and maintenance expense	$	(2,514)$	(924)
Gold stream obligation		(4,588)	(7,100)
Provision for Minto receivable		—	(5,000)
Restructuring costs		(422)	(2,307)
Loss on disposal of assets and other		(7,301)	—
Collective bargaining costs		—	(8,930)
Change in estimate on rehabilitation provision		6,553	—
Miscellaneous other income(expense)		9,698	(6,941)
Total other income(expense)	$	1,426$	(31,202)

26. Finance Income and Costs

Details of finance income and costs are as follows:

		Year ended December 31,	Year ended December 31,
		2024	2023
Interest income	$	5,206$	6,422
Interest on RCF		(28,630)	(25,364)
Interest on MVDP facility		(43,400)	(42,218)
Interest on shareholder loans and COF		(16,802)	(10,249)
Commitment and guarantee fees		(5,774)	(5,817)
Lease liability interest_(i)_		(15,658)	(8,768)
Accretion of deferred revenue		(9,552)	(9,805)
Accretion on decommissioning & restoration
provisions		(8,876)	(8,960)
Accretion on payable on purchase of NCI		(2,164)	(2,025)
Accretion on Minto obligation		(1,599)	—
Amortization of financing fees		(621)	(929)
Other interest		**(9,376) **	(583)
Sub-total	$	(137,246) $	(108,296)
Less finance costs capitalized on construction in
progress		76,446	72,200
Total finance cost,net	$	(60,800) $	(36,096)

i. A portion of accretion on leases has been capitalized to construction in progress related to the MVDP.

Finance income (expense) are as follows:

60

Capstone Copper Corp.

Notes to the Consolidated Financial Statements Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

		Year ended December 31,	Year ended December 31,	Year ended December 31,
		2024		2023
Finance income	$	5,206	$	6,422
Finance cost		**(66,006) **		(42,518)
Total finance cost,net	$	**(60,800) **	$	(36,096)

27. Segmented Information

The Company is engaged in mining, exploration and development of mineral properties, and has operating mines in the US, Chile and Mexico. The Company has six reportable segments as identified by the individual mining operations of Pinto Valley (US), Mantos Blancos (Chile), Mantoverde (Chile), Cozamin (Mexico), as well as the Santo Domingo development project (Chile) and Other. Early stage exploration, other and corporate operations are reported in the Other segment. Intercompany revenue and expense amounts have been eliminated within each segment in order to report on the basis that management uses internally for evaluating segment performance. Total assets and liabilities do not reflect intercompany balances, which have been eliminated on consolidation. Segments are operations reviewed by the CEO, who is considered to be the chief operating decision maker.

61

Capstone Copper Corp.

Notes to the Consolidated Financial Statements

Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

	Year ended December 31, 2024
	Pinto Valley Mantos Blancos Mantoverde Cozamin Santo Domingo Other Total
Revenue Copper concentrate Copper cathode Silver Molybdenum Gold Treatment and selling costs Pricing and volume adjustments (ii)	$ 488,875 $ 335,424 $ 158,663 $ 217,241 $ — $ — $ 1,200,203 28,177 63,949 328,163 — — — 420,289 7,699 1,811 — 30,698 — — 40,208 1,990 — — — — — 1,990 2,863 — 19,624 — — — 22,487 (34,173) (14,826) (13,317) (11,257) — (11) (73,584) (12,275) (4,445) (2,194) (3,016) — 9,559 (12,371)
Net revenue Production costs Royalties Depletion and amortization	483,156 381,913 490,939 233,666 — 9,548 1,599,222 (319,538) (277,071) (357,928) (101,779) — — (1,056,316) (2,992) (5,725) (4,810) (4,402) — — (17,929) (64,715) (123,055) (86,288) (39,366) — —(313,424)
Income from mining operations General and administrative expenses Exploration expenses Share-based compensation expense	95,911 (23,938) 41,913 88,119 — 9,548 211,553 (54) — — (106) (168) (31,205) (31,533) — — — (34) (400) (699) (1,133) — — — — —(16,013) (16,013)
Income (loss) from operations Realized and unrealized gains (losses) on derivative instruments Foreign exchange gain (loss) and other Net finance(costs) income	95,857 (23,938) 41,913 87,979 (568) (38,369) 162,874 — — 1,590 — — (1,940) (350) 16,134 (232) 9,600 (301) (4,450) 10,939 31,690 (4,640) (10,631) (25,390) (8,843) (2,097) (9,199) (60,800)
Income (loss) before income taxes Income tax(expense) recovery	107,351 (34,801) 27,713 78,835 (7,115) (38,569) 133,414 (11,916) 15,581 (8,632) (35,696) — (6,877) (47,540)
Total net income(loss)	$ 95,435 $(19,220) $ 19,081 $ 43,139 $ (7,115) $(45,446) $ 85,874
Mineral properties, plant & equipment additions	$ 129,924 $ 215,277 $ 335,888 $ 24,934 $ 16,618 $ 7,150 $ 729,791

i. Intersegment sales and transfers are eliminated in the table above.

ii. Included in pricing and volume adjustments are realized and unrealized gains (losses) on the Company's quotational pricing copper contracts.

62

Capstone Copper Corp.

Notes to the Consolidated Financial Statements

Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

	Year ended December 31,2023
	Pinto Valley Mantos Blancos Mantoverde Cozamin Santo Domingo Other Total
Revenue Copper concentrate Copper cathode Silver Gold Molybdenum Zinc Treatment and selling costs Pricingand volume adjustments	$ 431,559 $ 319,007 $ — $ 193,044 $ — $ — $ 943,610 23,409 104,557 291,279 — — — 419,245 6,072 1,861 — 33,400 — — 41,333 12,907 — — — — — 12,907 5,086 — — — — — 5,086 — — — 252 — — 252 (34,909) (18,152) (4,159) (12,190) — — (69,410) (214) (67) (1,047) (586) — (5,598) (7,512)
Net revenue Production costs Royalties Depletion and amortization	443,910 407,206 286,073 213,920 — (5,598) 1,345,511 (318,110) (301,099) (304,087) (90,706) — — (1,014,002) (1,606) (6,058) — (3,561) — — (11,225) (78,381) (69,162) (59,473) (30,253) — —(237,269)
Income (loss) from mining operations General and administrative expenses Exploration expenses Share-based compensation expense	45,813 30,887 (77,487) 89,400 — (5,598) 83,015 (143) — — (117) (126) (25,733) (26,119) (4) — — (78) (23) (4,856) (4,961) — — — — — (19,005) (19,005)
Income (loss) from operations Unrealized and realized gain on derivative instruments Foreign exchange gain (loss) and other Net finance costs	45,666 30,887 (77,487) 89,205 (149) (55,192) 32,930 — — 2,717 — — 358 3,075 (540) (10,116) (6,264) (2,092) (7,095) (64,805) (90,912) (3,628) (6,798) (843) (8,999) (2,001) (13,827) (36,096)
Income (loss) before income taxes Income tax(expense)recovery	41,498 13,973 (81,877) 78,114 (9,245) (133,466) (91,003) (3,324) (23,169) 5,109 (24,898) — 12,559 (33,723)
Total net income (loss) Mineral properties, plant & equipment additions	$ 38,174 $ (9,196) $ (76,768) $ 53,216 $ (9,245) $ (120,907) $ (124,726) 103,266 111,357 529,168 39,848 36,243 1,105 820,987

		As at December 31, 2024
		Pinto Valley Mantos Blancos Mantoverde Cozamin Santo Domingo Other Total
Mineral properties, plant and equipment		$ 831,741 $ 1,094,793 $ 3,036,851 $ 238,600 $ 507,820 $ 8,444 $ 5,718,249
Total assets		$ 957,907 $ 1,212,455 $ 3,286,662 $ 284,552 $ 521,552 $ 101,904 $ 6,365,032
Total liabilities		$ 252,840 $ 432,979 $ 1,491,755 $ 237,969 $ 66,485 $ 420,196 $ 2,902,224
		As at December 31,2023
		Pinto Valley Mantos Blancos Mantoverde Cozamin Santo Domingo Other Total
Mineral properties, plant and equipment		$ 758,846 $ 1,008,874 $ 2,803,818 $ 259,245 $ 453,908 $ 1,566 $ 5,286,257
Total assets		$ 876,456 $ 1,133,560 $ 3,018,904 $ 302,805 $ 490,671 $ 51,519 $ 5,873,915
Total liabilities		$ 232,368 $ 337,665 $ 1,358,651 $ 109,055 $ 18,415 $ 751,639 $ 2,807,793

63

Capstone Copper Corp.

Notes to the Consolidated Financial Statements Years Ended December 31, 2024 and 2023

(tabular amounts expressed in thousands of US dollars, except share and per share amounts)

28. Subsequent Events

On January 31, 2025, the Company signed a 35-year agreement with Empresa Concesionaria de Servicios Sanitarios S.A. ("ECONSSA") to secure a long-term water supply by reusing treated wastewater from Antofagasta and increasing water recycling at the Mantos Blancos mine. The project involves a third-party constructing a wastewater treatment plant, expected to be operational in 2028. The agreement entails future capital commitments in 2028 and 2033 proportionate to the Company's share of treated waste water from the plant, potential cost savings from increased water reuse, and long-term supply security for the mine.

64