Collective Mining (CNL) secures Guayabales surface rights in Colombia with US$34M deal

Rhea-AI Filing Summary

Collective Mining Ltd. has entered a binding promise of sale and purchase agreement to acquire the remaining surface rights needed for future mining at its Guayabales Project in Caldas, Colombia. The material change report states total aggregate consideration of US$34 million in cash.

The translated contract specifies a total price of US$33,581,007, payable largely in installments from 2027 to 2030, plus advance payments beginning in 2026. Interest of 6.0% per year applies to the outstanding balance after execution of the final sale deed, with default interest at the Colombian usury limit.

The agreement grants Collective Mining immediate use of the properties for technical work, exploration drilling, and other mining-related activities while payments are made. With surface titles now owned or under agreement, the company plans to start constructing an exploration adit in the fourth quarter of 2026 to support underground drilling of its Trap system.

Insights

Mining projects analyst

Collective Mining secures key surface rights at Guayabales with staged cash outlay and early site access.

The agreement gives Collective Mining legal access to critical surface lands over roughly 309 hectares near Marmato, Caldas, aligning surface control with its existing mineral titles and options. This combination is often necessary before large-scale mine construction and can de‑risk future permitting and engineering work.

Economically, the contract spreads about US$33.6 million of payments over several years, with advance installments in 2026–2027 and major tranches from 2027 to 2030. A 6.0% effective annual interest rate applies to unpaid balances, and some installments accelerate if environmental approval is obtained and construction begins early.

Operationally, the buyer can immediately conduct drilling, environmental baseline studies, and technical evaluations on the properties, while the seller retains responsibility for clearing encumbrances and taxes before later installments. The company’s plan to start an exploration adit in Q4 2026 depends on this surface access, so subsequent disclosures on permitting progress and adherence to the payment schedule will shape project momentum.

Form 6-K: How Foreign Companies Report to the SEC →

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of March, 2026

Commission File Number: 001-42170

Collective Mining Ltd.

(Translation of registrant’s name into English)

82 Richmond Street East, 4th Floor

Toronto, Ontario

Canada, M5C 1P1

(Address of principal executive office)

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

Form 20-F ☐        Form 40-F ☒

On March 6, 2026, Collective Mining Ltd. (the “Company”) filed on the Canadian Securities Administrators’ System for Electronic Document Analysis and Retrieval (SEDAR) website at www.sedarplus.ca the following documents: (1) Material Change Report and (2) Material Contract – Promise of Sale and Purchase Agreement.

Copies of the filings are attached to this Form 6-K and incorporated herein by reference, as follows:

Exhibit 99.1 - Material Change Report

Exhibit 99.2 - Material Contract – Promise of Sale and Purchase Agreement (redacted)

EXHIBIT INDEX

EXHIBIT NO.		DESCRIPTION
99.1		Material Change Report.
99.2		Material Agreement – Promise of Purchase and Sale Agreement (redacted).

1

SIGNATURES

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

	Collective Mining Ltd.
Date: March 20, 2026	By:	/s/ Paul Begin
	Name:	Paul Begin
	Title:	Chief Financial Officer and Corporate Secretary

2

Exhibit 99.1

FORM 51-102F3
MATERIAL CHANGE REPORT

Item 1. Name and Address of Company

Collective Mining Ltd. (the “Company”)

82 Richmond St. East

Toronto, Ontario M5C 1P1

Item 2. Dates of Material Change

March 11, 2026

Item 3. Press Releases

News release in respect of the material change referred to in this report was disseminated through the facilities of Canada NewsWire on March 11, 2026. The news release was subsequently filed on SEDAR+.

Item 4. Summary of Material Change

On March 11, 2026, the Company entered into a binding promise of sale and purchase agreement with certain arms-length vendors in connection with the acquisition of the remaining surface rights required for future mining operations at the Corporation’s Guayabales Project in Caldas, Colombia (the “Guayabales Surface Rights Agreement”) for total aggregate consideration of US$34 million in cash.

Item 5. Full Description of Material Change

On March 11, 2026, the Company entered into the Guayabales Surface Rights Agreement pursuant to which it agreed to acquire the remaining surface rights required for future mining operations at the Corporation’s Guayabales Project in Caldas, Colombia. The Company also holds the mineral titles, or options to acquire the mineral titles, over all areas where surface titles have been, or are being acquired for future mine development.

Under the terms of the Guayabales Surface Rights Agreement, the Company agreed to acquire land for a total purchase price of US$34 million in cash, to be paid in installments over a five-year period as follows:

(i) an aggregate of US$6.4 million to be paid in two instalments in 2026;

(ii) an aggregate of US$7.8 million to be paid in two installments in 2027;

(iii) an aggregate of US$6.4 million to be paid in two instalments in 2028;

(iv) an aggregate of US$6.4 million to be paid in two instalments in 2029; and

(v) an aggregate of US$6.4 million to be paid in two instalments in 2026.

Payments beginning in 2028 are also subject to additional annual accrued interest payment of 6.0%, and in the event that the Company receives approval from the relevant environmental agency in Colombia for a mining operation and elects to begin construction prior to paying the final cash installments under the Guayabales Surface Rights Agreement, certain outstanding installment payments will become immediately due prior to the commencement of major mine construction activities.

With all the surface titles required for a future mine now either owned or under agreement, the Company plans to commence construction of an exploration adit in the fourth quarter of 2026. The exploration adit, which is proposed to be used to support the Company’s geological understanding of the Guayabales Project from an underground vantage, will initially be used to construct underground drill chambers to test the Company’s Trap system. With underground access, the Company expects to be able to advance Trap’s exploration potential in an expedited manner.

Item 5.2. Disclosure for Restructuring Transactions

Not applicable.

Item 6. Reliance on subsection 7.1(2) of National Instrument 51-102

Not applicable.

Item 7. Omitted Information

No information has been omitted on the basis that it is confidential information.

Item 8. Executive Officer

For further information, contact:

Paul Begin

Chief Financial Officer and Corporate Secretary

t: 416.451.2727

Item 9. Date of Report

March 20, 2026.

2

Cautionary Note Regarding Forward Looking Information

This material change report contains “forward-looking statements” and “forward-looking information” within the meaning of applicable securities legislation (collectively, “forward-looking statements”). All statements, other than statements of historical fact, are forward-looking statements and are based on expectations, estimates and projections as at the date of this news release. Any statement that involves discussion with respect to predictions, expectations, beliefs, plans, projections, objectives, assumptions, future events or performance (often, but not always using phrases such as “plans”, “expects”, “is expected”, “budget”, “scheduled”, “estimates”, “forecasts”, “intends”, “anticipates”, or “believes” or variations (including negative variations) of such words and phrases, or state that certain actions, events or results “may”, “could”, “would”, “might” or “will” be taken, occur or be achieved) are not statements of historical fact and may be forward-looking statements. In this news release, forward-looking statements relate, among other things, to the anticipated advancement of mineral properties or programs; future operations; future recovery metal recovery rates; future growth potential of the Company; and future development plans.

These forward-looking statements, and any assumptions upon which they are based, are made in good faith and reflect our current judgment regarding future events including the direction of our business. Management believes that these assumptions are reasonable. Forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements. Such factors include, among others: risks related to the speculative nature of the Company’s business; the Company’s formative stage of development; the Company’s financial position; possible variations in mineralization, grade or recovery rates; actual results of current exploration activities; conclusions of future economic evaluations; fluctuations in general macroeconomic conditions; fluctuations in securities markets; fluctuations in spot and forward prices of gold, precious and base metals or certain other commodities; fluctuations in currency markets; change in national and local government, legislation, taxation, controls regulations and political or economic developments; risks and hazards associated with the business of mineral exploration, development and mining (including environmental hazards, industrial accidents, unusual or unexpected formation pressures, cave-ins and flooding); inability to obtain adequate insurance to cover risks and hazards; the presence of laws and regulations that may impose restrictions on mining; employee relations; relationships with and claims by local communities and indigenous populations; availability of increasing costs associated with mining inputs and labour; the speculative nature of mineral exploration and development (including the risks of obtaining necessary licenses, permits and approvals from government authorities); and title to properties, as well as those risk factors discussed or referred to in the annual information form of the Company dated March 24, 2025. Forward-looking statements contained herein are made as of the date of this news release and the Company disclaims any obligation to update any forward-looking statements, whether as a result of new information, future events or results, except as may be required by applicable securities laws. There can be no assurance that forward-looking statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements and there may be other factors that cause results not to be anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking statements.

3

Exhibit 99.2

PROMISE OF SALE AND PURCHASE AGREEMENT Between the undersigned, namely, [Redacted – Confidential Information] , of legal age, bearer of ID Card No . [Redacted – Confidential Information] , marital status : married, divorced, with community property regime dissolved and liquidated , domiciled in the municipality of Medellín, department of Antioquia, acting on his own behalf and hereinafter referred to as THE PROMISING SELLER , and COLLECTIVE MINING LIMITED SUCURSAL COLOMBIA , identified with Tax ID No . 901 . 410 . 476 - 1 , a branch of a foreign company duly incorporated under the laws of the Republic of Colombia, domiciled in the city of Medellín, department of Antioquia, represented herein by NATALIA ANDREA HERNÁNDEZ ARIAS , of legal age, bearer of ID Card No . [Redacted – Confidential Information] , issued in [Redacted – Confidential Information] , acting as alternate legal representative and who, for the purposes of this Agreement, shall be referred to as THE PROMISING BUYER , have agreed to enter into this PROMISE OF SALE AND PURCHASE AGREEMENT , which shall be governed by the following clauses : FIRST : PURPOSE : THE PROMISING SELLER hereby undertakes to transfer, by way of sale to THE PROMISING BUYER , who in turn undertakes to acquire, by way of purchase, the full ownership rights held by the SELLER over the following real estate properties : 1 . ) Rural plot of land known as [Redacted – Commercially Sensitive Information] , with six ( 06 ) dwelling houses, located in the village of Cabras, municipality of Marmato, department of Caldas, with an area of 309 . 2788 ha, the boundaries of which are as follows : STRIP OF LAND No . 3 , with the following boundaries according to the Magna Sirgas Reference System, Transverse Mercator cartographic projection with EPSG 3115 , and according to Joint Administrative Resolution SNR - 1 GAQ 11344 - 1101 / 31 - 12 - 2020 : [Redacted – Commercially Sensitive Information] . According to the above boundaries, the area of the aforementioned property is THREE HUNDRED AND NINE HECTARES (TWO THOUSAND SEVEN HUNDRED AND EIGHTY - EIGHT SQUARE METERS) ( 309 ha – 2 , 788 m 2 ) . 107514 Scan QR to verify/Escanear QR para verificar. Translation date/Fecha de traduccion: 20/03/2026

Identified with Real Estate Registration No. [Redacted – Commercially Sensitive Information] and Cadastral Code [Redacted – Commercially Sensitive Information] . 2 . ) A plot of land covered with yaraguá pasture, a dwelling called [Redacted – Commercially Sensitive Information] , located in the village of Vendejagual, in the municipality of Marmato, department of Caldas, which boundaries are found in Deed No . [Redacted – Commercially Sensitive Information] , granted at the Notary Office in Caldas . Identified with Real Estate Registration No. [Redacted – Commercially Sensitive Information] . FIRST PARAGRAPH : - SALE AS IS (corpus certum) : Notwithstanding the mention of size, area, boundaries, and other technical specifications set forth herein, this Promise of Sale and Purchase is entered into as a corpus certum sale under Article 1889 of the Colombian Civil Code . Consequently, no claim, price adjustment, indemnity, or compensation shall arise between the Parties for any differences that may exist between the registered, cadastral, or cartographic area or that resulting from subsequent technical measurements, whether the actual area is greater or less than that indicated herein . SECOND PARAGRAPH : - REGISTERED AREA : The sum of the areas recorded in the respective Real Estate Registration Folios that make up the object of this Promise of sale and purchase amounts to an approximate area of 309 . 27 ha, according to current registration information . THIRD PARAGRAPH: - CADASTRAL AND CARTOGRAPHIC REFERENCE: Notwithstanding the foregoing, the properties subject to this Agreement are also delimited on the Cadastral Reference Map attached as Annex No . 1 , which forms an integral part of this Agreement and indicates an approximate area of 325 hectares . 107515 Scan QR to verify/Escanear QR para verificar. Translation date/Fecha de traduccion: 20/03/2026

The Parties acknowledge that any differences that may exist between the registered area, the cadastral information, and the cartographic representation do not affect the validity of this Agreement, nor shall they give rise to claims, price adjustments, or compensation, as this is a Promise of sale and purchase entered into AS IS ( corpus certum) and subject to subsequent technical verification . FOURTH PARAGRAPH : - The Parties agree that the sale of the Properties does not include any movable property, livestock, corrals, equipment, inventory, or in general any movable assets located on the Properties . SECOND : CHAIN OF TITLE : THE PROMISING SELLER acquired the ownership and possession of the properties described as follows : 1 . The Property [Redacted – Commercially Sensitive Information] , identified with Real Estate Registration No . [Redacted – Commercially Sensitive Information] , as follows : [Redacted – Confidential Information] states that he acquired, in his current marital status, full real property rights over the plot of land known as " [Redacted – Commercially Sensitive Information] ," located in the village of Cabras, municipality of Marmato, department of Caldas, as follows : A) Initially, THE SELLING PARTY acquired part of the Properties through the PURCHASE OF 50 % from [Redacted – Confidential Information] , by means of Public Deed No . [Redacted – Commercially Sensitive Information] , granted at the Eleventh Notary Office of Medellín . B) THE SELLING PARTY acquired, through a PURCHASE AND SALE AGREEMENT, SIX SEVENTH PARTS, from [Redacted – Confidential Information] , by means of Public Deed No . [Redacted – Commercially Sensitive Information] , granted at the Eleventh Notary Office of the Medellín Circuit . C) THE SELLING PARTY sold part of the Properties through a SALE OF USUFRUCT to [Redacted – Confidential Information] , by means of Public Deed No . [Redacted – Commercially Sensitive Information] , executed at the Eleventh Notary Office of the Medellín Circuit . D) THE SELLING PARTY acquired part through an EXCHANGE of 14 . 29 % of the BARE OWNERSHIP made to [Redacted – Confidential Information] , by means of Public Deed No . [Redacted – 107516 Scan QR to verify/Escanear QR para verificar. Translation date/Fecha de traduccion: 20/03/2026

Commercially Sensitive Information] , executed at the Twentieth Notary Office of the Medellín Circuit . E) THE SELLING PARTY acquired a part through an EXCHANGE of 14 . 29 % of the BARE OWNERSHIP, carried out with [Redacted – Confidential Information] , by means of Public Deed No . [Redacted – Commercially Sensitive Information] , granted at the Twentieth Notary Office of the Medellín Circuit . F) THE SELLING PARTY acquired a part through a 14 . 29 % PURCHASE AND SALE AGREEMENT OF BARE OWNERSHIP carried out with [Redacted – Confidential Information] , by means of Public Deed No . [Redacted – Commercially Sensitive Information] , granted at the Twentieth Notary Office of the Medellín Circuit . G) Subsequently, they made a CLARIFICATION REGARDING THE TRUE NAME OF THE SELLER, LEGAL NATURE OF THE ACT : METHOD OF ACQUISITION by means of Public Deed No . [Redacted – Commercially Sensitive Information] , granted at the Notary Office of Caldas, Antioquia . H) THE SELLING PARTY acquired part through the PURCHASE AND SALE AGREEMENT OF BARE OWNERSHIP THE UNDIVIDED RIGHTS IN THIS PLOT AND TWO OTHER PLOTS, made to [Redacted – Confidential Information] , by means of Public Deed No . [Redacted – Commercially Sensitive Information] , granted at the Notary Office of Caldas, Antioquia . l) Subsequently, [Redacted – Confidential Information] carried out a CANCELLATION BY MUTUAL AGREEMENT OF THE PARTIES (annotation 8 ), by means of Public Deed No . [Redacted – Commercially Sensitive Information] , granted at the Sixth Notary Office of the Medellín Circuit . J) Finally, [Redacted – Confidential Information] carried out a CANCELLATION BY MUTUAL AGREEMENT OF THE PARTIES OF THE SALE OF USUFRUCT . IT IS CLARIFIED THAT THE CORRECT NAME IS [Redacted – Confidential Information] , ID Card No . [Redacted – Confidential Information] (annotation 6 ), by means of Public Deed No . [Redacted – Commercially Sensitive Information] , granted at the Sixth Notary Office of the Medellín Circuit . K) Subsequently, the SELLING PARTY made a partial sale to the NATIONAL INFRASTRUCTURE AGENCY (ANI), declaring the remaining portion of 309 hectares and 2 , 788 m² , by means of Deed No . [Redacted – Commercially Sensitive Information] , granted at the Second Notary Office of 107517 Scan QR to verify/Escanear QR para verificar. Translation date/Fecha de traduccion: 20/03/2026

Manizales, duly registered under Real Estate Registration Folio No . [Redacted – Commercially Sensitive Information] of the Public Instruments Registry Office of Riosucio, Caldas . 2 . The Property [Redacted – Commercially Sensitive Information] , identified with Real Estate Registration No . [Redacted – Commercially Sensitive Information] , as follows : A) Initially, THE SELLING PARTY acquired 25 % of the bare ownership through purchase made from [Redacted – Confidential Information] , by means of Deed No . [Redacted – Commercially Sensitive Information] , granted at the Twentieth Notary Office of Medellín . B) By the same Deed No . [Redacted – Commercially Sensitive Information] , granted at the Twentieth Notary Office of Medellín, [Redacted – Confidential Information] reserved the USUFRUCT . C) Then THE SELLING PARTY acquired 75 % of the BARE OWNERSHIP through purchase and sale Agreement made by [Redacted – Confidential Information] , through Deed No . [Redacted – Commercially Sensitive Information] , granted at the Sole Notary Office of Caldas . D) Finally, [Redacted – Confidential Information] cancelled the USUFRUCT, by means of Deed No . [Redacted – Commercially Sensitive Information] , granted at the Sixth Notary Office of Medellín . THIRD : PRICE AND FORM OF PAYMENT . The total price agreed is the amount of USD THIRTY - THREE MILLION FIVE HUNDRED EIGHTY - ONE THOUSAND SEVEN (USD 33 , 581 , 007 ), which THE PROMISING BUYER agrees to pay to THE PROMISING SELLER as follows and according to the following payment schedule : AMOUNT INSTALLMENT No. PAYMENT DATE USD 11,095,728 1 March 9, 2027 USD 3,212,182.69 2 July 7, 2027 USD 3,212,182.69 3 January 7, 2028 USD 3,212,182.69 4 July 7, 2028 USD 3,212,182.69 5 January 8, 2029 107518 Scan QR to verify/Escanear QR para verificar. Translation date/Fecha de traduccion: 20/03/2026

USD 3,212,182.69 6 July 9, 2029 USD 3,212,182.69 7 January 8, 2030 USD 3,212,182.69 8 July 8, 2030 PARAGRAPH: The PROMISING BUYER shall deliver to THE PROMISING SELLER the following amounts as an advance payment amounts: AMOUNT No. INSTALLMENT PAYMENT DATE USD 3,212,182.69 1 March 11, 2026 USD 3,212,182.69 2 March 30, 2026* USD 4,671,362.73 3 January 7, 2027 These amounts may be allocated by THE PROMISING BUYER in full to the total agreed price, including the first payment installment established in this Promise of sale and purchase . FIRST PARAGRAPH : - INTEREST AND LATE PAYMENT CHARGES : From the date of signing the Public Deed of Sale, interest will accrue on the outstanding balance of the price at an effective annual rate of six percent ( 6 . 00 % ) . This interest shall be calculated and paid on each of the dates on which payment of each of the agreed installments is due . In the event of default in the payment of any of the installments corresponding to the price, default interest shall accrue on the amounts due at the maximum legal rate permitted by Colombian civil and commercial legislation, equivalent to the usury limit certified periodically by the Colombian Financial Superintendency . Likewise, in the event of default in the payment of interest, default interest shall accrue under the terms provided for in Article 886 of the Commercial Code, from the moment such interest becomes due and payable until its actual payment . SECOND PARAGRAPH : - CONDITION PRECEDENT FOR PAYMENT OF THE SECOND, THIRD, AND FOURTH INSTALLMENTS : Payment of the second installment of the advance payment (2) (March 30, 2026) shall be conditional upon compliance with the following: 107519 Scan QR to verify/Escanear QR para verificar. Translation date/Fecha de traduccion: 20/03/2026

a) The expiration of the date established in the payment schedule provided for in this Agreement . b) The constitution and registration of a closed mortgage for the sum of ONE BILLION COLOMBIAN PESOS (COP 1 , 000 , 000 , 000 ), granted by THE PROMISING SELLER to THE PROMISING BUYER , on all the properties covered by this Agreement . c) The cancellation and incorporation into the registration of the mortgage for an undetermined sum constituted by THE PROMISING SELLER in favor of BANCO DAVIVIENDA S . A . , by means of Public Deed No . [Redacted – Commercially Sensitive Information] , granted at the Notary Public of Caldas, registered in Real Estate Registry Folio No . [Redacted – Commercially Sensitive Information] . Payment of this installment will only be made once compliance with the above conditions has been verified . » Payment of installment No . 4 (July 7 , 2028 ) will be conditional upon : a) the date established in the payment schedule and the execution and registration at the Riosucio Public Registry Office of the Public Deed of Sale in favor of THE PROMISING BUYER . However, the payment of installment No . 4 and installment No . 5 may be made if THE PROMISING BUYER chooses to extend the term for executing the Public Deed of Sale according to the provisions of clause nine of this Agreement . THIRD PARAGRAPH : - From the signing of this Agreement, THE PROMISING BUYER may enter and use the PROPERTIES for technical activities, studies, exploration, mining operation activities, drilling, and other activities related to its business purpose, without THE PROMISING SELLER being able to oppose or take actions that hinder such use, or claim additional charges, provided that THE PROMISING BUYER is in compliance with its obligations . FOURTH PARAGRAPH : - Payments made in Colombian pesos at the instruction of THE PROMISING SELLER shall be settled according to the Representative Market Rate (TRM) certified by the Financial Superintendency of Colombia, in force on the business day prior to the date on which each payment is due . In the absence of instructions in this regard, all payments that THE PROMISING BUYER shall make to THE PROMISING SELLER under this 107520 Scan QR to verify/Escanear QR para verificar. Translation date/Fecha de traduccion: 20/03/2026

Agreement shall be in US dollars, provided that the PROMISING SELLER 's Foreign Bank Account (Cuenta de Compensación) certificate has been submitted . FIFTH PARAGRAPH : - Payments shall be made by electronic transfer or cashier's check, payable to THE PROMISING SELLER , to the bank accounts authorized by the latter . SIXTH PARAGRAPH : - The payments referred to in clause three shall be subject to any applicable legal and tax deductions ; these deductions shall not be construed as a failure on the part of the BUYER to pay the total amount agreed upon . SEVENTH PARAGRAPH : - After completion of the payments agreed upon in the schedule established in clause three, including the total price and interest accrued, no additional payment shall be required by THE PROMISING SELLER from THE PROMISING BUYER ; the agreed price includes and allows the use of the PROPERTIES by THE PROMISING BUYER from the signing of this Agreement . The deferred payment in installments does not allow for the collection of additional money under the terms established in this Agreement . EIGHTH PARAGRAPH : - The Parties declare under oath that the PROPERTIES, as well as the money used to satisfy the obligations arising from the AGREEMENT, come from or originate from the exercise of lawful activities . NINTH PARAGRAPH : - In the event of a court order against THE PROMISING SELLER regarding the PROPERTIES after the signing of this AGREEMENT and while it is in force, outstanding payments shall be suspended until THE PROMISING SELLER guarantees the rights granted to the BUYER through this AGREEMENT, without this constituting a default or breach of payment on the part of THE PROMISING BUYER . TENTH PARAGRAPH : - VERIFICATION OF PROPERTY TAX : As a condition for the enforceability of each installment of the price starting with the second installment, THE PROMISING SELLER shall prove that the properties covered by this AGREEMENT are in good standing with regard to the unified property tax corresponding to the respective fiscal year . 107521 Scan QR to verify/Escanear QR para verificar. Translation date/Fecha de traduccion: 20/03/2026

To this end, it shall provide a copy of the official receipt issued by the relevant municipality and proof of payment . THE PROMISING BUYER agrees that THE PROMISING SELLER will submit a request for a cadastral self - assessment to the relevant cadastral authority before June 30 , 2026 , to increase the cadastral valuation of the properties . If the request is not resolved in a fully favorable manner, THE PROMISING BUYER may submit a new request for a cadastral self - assessment to the relevant cadastral authority before June 30 , 2027 , to increase the cadastral valuation of the properties, and in this case, THE PROMISING SELLER may choose to have the Public Deed of sale of the properties signed on March 9 , 2028 , according to clause nine of this Agreement . In either case, the amount by which the cadastral valuation is to be increased, to be included in the request for cadastral self - assessment, shall be set by mutual Agreement between the Parties, acting in good faith and reasonably, and if no Agreement is reached at least thirty calendar days before the specified deadline, it shall be set by lottery between the Parties . ELEVENTH PARAGRAPH : - In the event that, during the term of this promise, a relevant authority carries out or completes any type of sale of a strip or strip of land of any of the Properties, there shall be no modification or adjustment to the price, and the economic proceeds of such action (including the price, indemnities, or compensation) shall benefit THE PROMISING BUYER , but THE PROMISING SELLER shall be entitled to receive them, and they shall be deducted from the price, allocating it to installments of the price with the longest maturity date . FOURTH : - PROMISSORY NOTES : (a) To evidence obligation to pay the full Price, any interest accrued or late payment interest, as well as any other payment obligations established in this Agreement, THE PROMISING BUYER shall, on the same date as this Agreement, issue a blank promissory note with a letter of instructions, according to the form attached as Annex No . 2 . 107522 Scan QR to verify/Escanear QR para verificar. Translation date/Fecha de traduccion: 20/03/2026

(b) To document the payment received as advance payment amounts, THE PROMISING SELLER undertakes to sign a blank promissory note with a letter of instructions in favor of THE PROMISING BUYER . The Parties agree that the sole purpose of the promissory note shall be to serve as a guarantee of the return of the sums delivered by THE PROMISING BUYER as an advance payment, and it may only be demanded by THE PROMISING BUYER in the event of breach by THE PROMISING SELLER of its obligations under this Agreement, including, but not limited to, refusal or inability to grant the Public Deed of Sale under the agreed conditions . In the event that the Agreement is executed under the agreed terms and the sale is granted, THE PROMISING BUYER undertakes to return the promissory note to THE PROMISING SELLER , duly canceled or rendered unusable, on the day of the signing of the Public Deed of sale under the agreed conditions . The signing and delivery of the promissory note does not constitute a novation of the obligations arising from this Agreement nor does it alter the economic conditions agreed upon between the Parties . The value of the promissory note shall correspond to the total amount actually received by THE PROMISING SELLER as an advance payment . FIFTH : - FREEDOM FROM ENCUMBRANCES AND CLEARANCE : THE PROMISING SELLER declares and guarantees that it has full and exclusive ownership of the properties covered by this promise and that these have not been sold, promised for sale, transferred, or encumbered in favor of third parties . It also guarantees that the properties will be transferred free of : Mortgages, Pledges, Resolutory conditions, Unseizable family assets, Family home status, Usufructs, Use or habitation, Antichresis, Undeclared easements, Censuses, Communities, Unreported leases, Occupants, Limitations on ownership, Precautionary measures, Seizures, Registrations of lawsuits, Pending lawsuits, Administrative or agrarian proceedings, Third - Party claims . 107523 Scan QR to verify/Escanear QR para verificar. Translation date/Fecha de traduccion: 20/03/2026

Likewise, the SELLER is obligated to remedy any eviction and hidden defects according to the terms of articles 1893 et seq . of the Civil Code . THE PROMISING SELLER also declares that the properties are free and clear of property taxes, fees, contributions, valuations, and public services incurred up to the date of signing this Agreement . Property taxes incurred after the signing of this Agreement and up to the date of signing of the Public Deed of sale under the agreed conditions shall be borne by THE PROMISING SELLER . FIRST PARAGRAPH : - EXCEPTIONS : The Parties expressly state that the properties have the following registered encumbrance, which will be lifted and its cancellation registered as a condition for making the third and subsequent payments agreed upon in the payment schedule in clause three : Mortgage of an undetermined amount constituted by THE PROMISING SELLER in favor of BANCO DAVIVIENDA S . A . , by means of Deed No . [Redacted – Commercially Sensitive Information] , granted at the Sole Notary Office of Caldas, Registration Folio [Redacted – Commercially Sensitive Information] . Failure to cancel this encumbrance shall entitle THE PROMISING BUYER to refrain from granting the Deed without this constituting a breach . SECOND PARAGRAPH : - REGISTERED EASEMENTS : Notwithstanding the foregoing, THE PROMISING BUYER accepts the legal or voluntary easements that are duly constituted and registered in the respective real estate registration folios on the date of signing this Agreement, provided that : They are fully identified in the Certificate of Title and Ownership Transfer ; They do not correspond to easements established after the signing of this promise . Any easement that is not registered, not declared, or that significantly affects the economic use of the Properties shall constitute a serious breach by THE PROMISING SELLER and shall give rise to compensation for damages to THE PROMISING BUYER . 107524 Scan QR to verify/Escanear QR para verificar. Translation date/Fecha de traduccion: 20/03/2026

THIRD PARAGRAPH : - Furthermore, THE PROMISING SELLER declares and guarantees, at the time of signing this Agreement, but not subsequently : 1 . That it exercises quiet and peaceful enjoyment of the Properties and that it is not aware of any claim of any nature made by third parties on or in relation to the Properties, as it is the sole owner . 2 . That the Properties are not inhabited by squatters or third parties who may claim any rights over them, and that there have never been any owners or occupants other than THE PROMISING SELLER . 3 . That there is no (a) dispute or litigation ; (b) threat of dispute or litigation ; or (c) challenge regarding the use or occupation of the Properties . 4 . That there are no proposals, notifications, measures, or orders from government authorities, and there is no threat that these will be issued and that they will in any way affect or may affect the rights of the Bidders over the Properties . 5 . That there have been and are no claims of any kind against the Properties before the Land Restitution Unit, the National Land Agency, the former Incoder (Institute of Rural Development), the Regional Autonomous Corporation, or any other municipal, departmental, or national authority . 6 . That THE PROMISING SELLER has not subleased all or part of the Properties, nor has it agreed to sublease all or part of the real estate, nor has it assigned or entered into any Agreement to transfer any right or obligation under any kind of contract . SIXTH : - THE PROMISING BUYER undertakes to hold THE PROMISING SELLER harmless against any third - Party claims, police action, ownership proceedings, or conflicts arising from occupations . THE PROMISING SELLER undertakes to hold THE PROMISING BUYER harmless against any claims attributable to it . SEVENTH : - DELIVERY : THE PROMISING SELLER shall make the actual and physical delivery of the properties to THE PROMISING BUYER upon signing the Promise of sale and purchase, that is , on March 10 , 2026 . FIRST PARAGRAPH : - THE PROMISING BUYER shall give THE PROMISING SELLER a reasonable period of time to remove from the properties promised for sale in this Agreement, the movable and self - moving property, including but not limited to the livestock currently on the properties, as well as the removable facilities used for their management and any other movable property and/or removable structure belonging to THE PROMISING SELLER . 107525 Scan QR to verify/Escanear QR para verificar. Translation date/Fecha de traduccion: 20/03/2026

The care, handling, custody, and removal of the livestock , as well as the dismantling and removal of the removable structures and facilities , shall be the sole responsibility of THE PROMISING SELLER , who shall assume all costs and risks associated with such activities . In any case, the removal of the aforementioned assets shall be carried out no later than the date of execution of the Public Deed of sale , without this affecting the right of use of the properties by THE PROMISING BUYER as herein agreed . THE PROMISING BUYER shall not be liable for any loss, damage, or harm that may be suffered by THE PROMISING SELLER 's livestock or property while they remain on the premises . SECOND PARAGRAPH : The Properties shall be delivered with the dwelling houses . THIRD PARAGRAPH : - AUTHORIZATION OF ACTIVITIES : During the entire term of this AGREEMENT, THE PROMISING BUYER may carry out the following activities on the entire area of the Properties without requiring additional authorization and without any payment other than that agreed upon for the Properties : » Mining prospecting and drilling activities such as, but not limited to : Collection of surface geological information, geophysical studies, cartography, mapping of streams, soils, and roads, among other activities related to mining exploration in the quantities required by COLLECTIVE MINING LIMITED SUCURSAL COLOMBIA . » Installation of the infrastructure required for drilling platforms and for the installation of any necessary piezometers. With an approximate area of 12x12 m 2 on each platform. » Installation of water pumps . » Laying of hoses. » Installation of water storage ponds . » Transit and adaptation of roads and accesses. » Permanent access for personnel and contractors. 107526 Scan QR to verify/Escanear QR para verificar. Translation date/Fecha de traduccion: 20/03/2026

» Portable toilet installation. » Loading and unloading points. » Installation and maintenance of piezometers in an area of approximately 2x2 m 2 each. » Fencing of the piezometer area. » Allow occasional or emergency helicopter landings, including adaptation of the area for the heliport . » The number of water pumps and/or hoses will be determined by the size of the occupied area . » Abiotic characterization : inventory and characterization of water sources, monitoring of water quality, air quality, and inventory of uses and users . This involves a team of 10 people walking the Properties and taking measurements . These activities do not materially affect the Properties . The activities consist solely of field observation and water sampling . For air quality characterization, the equipment is installed for 15 days . » Biotic characterization : inventory of fauna and flora ; this involves 10 people walking around the Properties, identifying species, taking flora samples, and installing camera traps for fauna inventory . There is no intervention on the Properties ; the samples taken are branches and leaves . This study is critical due to the potential presence of fragmented tropical dry forest . » Technical studies related to the mining project , which will be developed by a team from COLLECTIVE MINING, on the Properties covered by this Agreement . FOURTH PARAGRAPH . - Any improvement, adaptation, or work that increases the commercial value of the Properties that THE PROMISING BUYER carries out on the Properties before the transfer of ownership granted by Public Deed will be at its own cost and risk . Consequently, THE PROMISING BUYER shall not be entitled to any reimbursement for any improvements made in the event that this Agreement is terminated under the terms set forth herein . 107527 Scan QR to verify/Escanear QR para verificar. Translation date/Fecha de traduccion: 20/03/2026

EIGHTH : - REPRESENTATIONS AND WARRANTIES OF THE PROMISING BUYER : THE PROMISING BUYER represents and warrants to THE PROMISING SELLER that the following representations and warranties are true as of the date of execution of this Agreement : 1. Existence and Capacity . THE PROMISING BUYER (i) is a branch of a foreign company, duly incorporated and existing under Colombian law, (ii) is not subject to any cause for dissolution, nor is it part of a business reorganization or judicial liquidation process . 2. Authorization ; Effects of this Agreement . All consents, approvals, authorizations, or orders necessary for the execution and performance of the Agreement have been duly obtained . This Agreement has been duly executed by THE PROMISING BUYER and constitutes a legal, valid, enforceable, and binding obligation on THE PROMISING BUYER , according to its terms . 3. Absence of Conflict . The execution of the Agreement and the obligations provided herein do not (i) contravene, result in a violation of, or constitute a breach of its bylaws ; (ii) contravene, result in a violation of, or constitute a material breach of any applicable law ; nor (iii) require the consent of, or action by, any Governmental Entity, nor constitute an event or breach that, with or without notice or the passage of time, or both, would constitute a breach of obligations, or cause or permit the termination, cancellation, acceleration, or any other change in any right or obligation under any contract of THE PROMISING BUYER ; (b) There is no claim, litigation, contingency, reorganization agreement, restructuring, or agreement with creditors in progress against THE PROMISING BUYER that (i) imposes or may impose restrictions on the respective Agreement, or (ii) would result or could result in the revocation, nullity, ineffectiveness, or invalidity of the transactions and commitments contemplated in the Agreement . NINTH : - DEED . The corresponding Public Deed of sale formalizing this Purchase and Sale Agreement shall be executed on [Redacted – Confidential Information] , at the First Notary Office of Itagüí, at 9 : 00 a . m . , but may be executed earlier or later, no later than March 9 , 2028 . On this date and at this time, the Parties shall appear at the Notary Office with the 107528 Scan QR to verify/Escanear QR para verificar. Translation date/Fecha de traduccion: 20/03/2026

certificates of good standing and other documents necessary to enter into this type of transaction . FIRST PARAGRAPH : - RESOLUTORY CONDITIONS : This Agreement shall be resolved according to Articles 1537 and 1539 of the Civil Code and, therefore, the obligation of both parties to sign the Public Deed that is the subject of this Agreement shall be subject to the fulfillment of the following conditions : a) That the Properties are free of encumbrances, seizures, limitations, and precautionary measures not accepted by THE PROMISING BUYER . b) Cancellation of mortgages or encumbrances that shall be lifted according to this Agreement . c) Delivery of a certificate of good standing for taxes, valuation, and utilities . f) That on the same date of signing of the Public Deed between the Parties, a guarantee has been entered into or constituted that directly or indirectly affects the ownership of the properties subject to the Agreement, at the option of THE PROMISING SELLER , for which THE PROMISING SELLER shall be solely responsible for assuming all costs and expenses of constitution and administration . The termination of the Agreement, whether due to the fulfillment of any of the above conditions, shall take effect automatically, without any compensation, indemnification, or payment by either Party, except for the refund of any installments that have been paid, for which there shall be a period of fifteen ( 15 ) calendar days in favor of THE PROMISING BUYER . TENTH : - IMPLIED TERMINATION CLAUSE AND PENALTY CLAUSE : Failure by either Party to comply with all or any of the obligations arising from this Agreement shall entitle the Party that has complied or agreed to comply with its obligations to demand compliance with the Agreement or its termination, according to the provisions of Articles 870 of the Commercial Code and 1546 of the Civil Code . 107529 Scan QR to verify/Escanear QR para verificar. Translation date/Fecha de traduccion: 20/03/2026

Notwithstanding the foregoing, after the signing of the Public Deed according to this Agreement, with the exception of legal actions seeking the enforcement of the payment obligations provided for in this Agreement by THE PROMISING BUYER and in the promissory note granted by THE PROMISING BUYER , the penalty clause payable by THE PROMISING BUYER , the Parties agree that after the signing of the Public Deed, the Parties expressly and irrevocably waive the tacit termination condition, remediation of hidden or redhibitory defects, relative or absolute nullity actions, eviction remedy, actions to declare non - existence of the Agreement, rescission action for any reason, actions to revise the price or contractual balance, and any other action or right that seeks or has the effect of undoing the completion of any of the transactions contemplated in this Promise of sale and purchase . In the event of default by THE PROMISING BUYER , the Parties agree that the sums of money that have been paid up to that point in respect of the agreed price and interest or default interest shall remain in the possession of THE PROMISING SELLER as a penalty clause . Consequently, THE PROMISING SELLER may retain the sums actually received up to the date of default, attributing them to the value of the penalty clause, without the need for prior judicial or extrajudicial proceedings to declare THE PROMISING BUYER in default, a right to which the Parties expressly waive . In the event of default by THE PROMISING SELLER prior to the signing of the Public Deed, THE PROMISING BUYER may demand the fulfillment of the Agreement or its termination, with the return of the sums paid and the recognition of the corresponding penalty clause . To prove compliance or willingness to comply with the obligations arising from this Agreement, the Parties may record this in a document signed before a notary public or by any other means of evidence admissible under Colombian law . TENTH : - NOTARY AND REGISTRATION FEES AND OTHER EXPENSES : 107530 Scan QR to verify/Escanear QR para verificar. Translation date/Fecha de traduccion: 20/03/2026

a) The expenses corresponding to the Public Deed shall be borne as follows : Notary and departmental fees shall be paid in equal parts, registration fees shall be paid by THE PROMISING BUYER , stamp duty shall be paid in equal parts , and withholding tax shall be paid by THE PROMISING SELLER . b) Notary fees, registration fees, departmental fees, and other costs associated with the creation of the mortgage in favor of THE PROMISING BUYER shall be borne in full by THE PROMISING SELLER . Similarly, notary fees, registration fees, departmental taxes, and other costs associated with the establishment of the mortgage in favor of THE PROMISING SELLER shall be borne in full by THE PROMISING SELLER . ELEVENTH : - ENFORCEABILITY : The Parties declare, accept, and acknowledge that this Agreement contains clear, express, and enforceable obligations and that, as such, it is enforceable against the obligated Party that has not fulfilled its obligations, without the need for signature recognition or default, in favor of the other Party that has fulfilled each and every one of the obligations contained herein and for which each Party is responsible . TWELFTH : - CONFIDENTIALITY : THE PARTIES undertake to maintain absolute confidentiality and strict secrecy regarding the confidential information of THE PARTIES to which they have access as a result of the execution of this AGREEMENT . Confidential information may be provided before, during, or after the execution of the commencement of the AGREEMENT . THE PARTIES undertake to use such confidential information exclusively within the framework of the execution of this AGREEMENT and not to use it for their own purposes or for the benefit of others or disclose it to a third Party at any time . The obligations of this clause shall remain in force after the termination or expiration of this AGREEMENT for an additional period of ten ( 10 ) years . In the event of a breach, THE PARTIES shall be entitled to take action against the Party in breach of this clause . THIRTEENTH : - PUBLIC DISCLOSURE : THE PARTIES acknowledge and agree that Collective Mining will issue a press release in connection with the transactions contemplated 107531 Scan QR to verify/Escanear QR para verificar. Translation date/Fecha de traduccion: 20/03/2026

by this Agreement and will file this Agreement, with such redactions or deletions as may be required under Applicable Law, together with a material change report and any other required forms, under Collective Mining's issuer profile on the System for Electronic Analysis and Retrieval Plus (SEDAR+) and in the Electronic Data Gathering, Analysis, and Retrieval (EDGAR) database . Collective Mining agrees that it will not publish or disclose the name of the Seller, the names of the properties, or images of the maps describing the properties to be acquired pursuant to the terms of this Agreement (the "Maps"), unless such disclosure is requested by any securities regulatory authority (including, but not limited to, the Ontario Securities Commission or any other provincial or territorial securities regulatory commission or authority in Canada, the United States Securities and Exchange Commission, the Toronto Stock Exchange, or NYSE American), or when Collective Mining is otherwise required to publish or disclose the name of the Seller, the names of the properties, or images of the Maps by order of a governmental authority . If Collective Mining determines that it is required, according to Applicable Law, to publicly disclose information relating to the Seller's name, the name of the properties, or images of the Maps, it shall provide the Seller with a reasonable opportunity to review and comment on the content of such public disclosure . Collective Mining shall incorporate the Seller's comments into the public disclosure to the extent such comments are permitted by Applicable Law . If the Seller does not respond to a request for comments within three ( 3 ) Business Days, Collective Mining shall be entitled to make the public disclosure without the Seller's comments . FOURTEENTH : - DISPUTE RESOLUTION : THE PARTIES agree that in the event of any dispute arising between them by reason of or in connection with this AGREEMENT , except for the collection of enforceable instruments or obligations, the dispute shall be settled by the decision of an arbitration tribunal operating according to the following rules : 1. The tribunal shall be subject to the rules of arbitration procedure of the Arbitration and Conciliation Center of the Medellín Chamber of Commerce. 107532 Scan QR to verify/Escanear QR para verificar. Translation date/Fecha de traduccion: 20/03/2026

2. The internal organization of the tribunal, including its fees and charges, shall be determined by the Arbitration and Conciliation Center of the Medellín Chamber of Commerce . 3. The tribunal shall be composed of three ( 3 ) arbitrators, except in cases where the amount in dispute is less than the equivalent of four hundred ( 400 ) current legal monthly minimum wages, in which case there shall be only one ( 1 ) arbitrator . 4. The arbitrators shall be chosen by mutual Agreement between the Parties from the list of arbitrators of the Arbitration and Conciliation Center of the Medellín Chamber of Commerce . If the Parties fail to reach an Agreement on the choice of arbitrators, they shall be appointed by the Arbitration and Conciliation Center of the Medellín Chamber of Commerce, in the manner established in its regulations . 5. The tribunal shall decide according to the law . 6. The tribunal shall operate in the city of Medellín at the Arbitration and Conciliation Center of the Medellín Chamber of Commerce . 7. The costs of the tribunal shall be borne by the losing Party . 8. THE PARTIES agree that all disputes, actions, and proceedings related to enforcement proceedings or restitution of real estate shall continue to be subject to ordinary jurisdiction . FIFTEENTH : - PRIOR KNOWLEDGE, GOOD FAITH : The Parties declare that they had sufficient prior knowledge of this document and were advised in this negotiation by suitable persons ; that this Agreement is entered into in good faith, considering that none of them has any limitations, restrictions, impediments, or prohibitions to enter into it, and therefore their intention and will is reflected in this document, and its interpretation and application shall be binding not only on what has been expressly agreed by the Parties but also on everything that corresponds to its nature and cause, based on equity and commercial custom . SIXTEENTH : - DECLARATION OF ORIGIN OF FUNDS : Pursuant to Laws 365 of 1997 and 793 of 2002 , or any regulations that add to, modify, or reform them, they declare that the ownership rights over the real estate promised in the sale were acquired with resources derived from or originating in the exercise of lawful activities . Likewise, THE PROMISING BUYER declares that the resources allocated for the payment of the price have been acquired lawfully 107533 Scan QR to verify/Escanear QR para verificar. Translation date/Fecha de traduccion: 20/03/2026

and derive from legitimate activities, each of which has the capacity to demonstrate such circumstances if required by the relevant authority . SEVENTEENTH : - ASSIGNMENT : This Agreement and the Properties subject of this Agreement may only be assigned by THE PROMISING SELLER to a new company wholly owned by it and with the promising seller as the sole shareholder, with the review, approval, and express written authorization of THE PROMISING BUYER ; any agreement subsequent to the signing of this document shall be made in writing . If this provision is contravened, the assignment shall have no legal effect and therefore shall not exempt from liability the Party who has carried it out without the authorization of the other Party . NINETEENTH : - NON - WAIVER : If either Party fails to exercise a right or option established in its favor in this Agreement, or fails to insist on strict compliance with its terms, it shall not be alleged that such failure constitutes a waiver of the right to demand compliance in the future, or to accept future violations . The rights, privileges, and remedies established in this Agreement are complementary to those established by law in favor of the Parties . TWENTIETH : - FORMAL RIGOR : The Parties expressly agree to the formal rigor of this Agreement, and therefore any modification, alteration, or addition thereto shall be in writing and signed by all parties involved . The Parties agree to enter into a comprehensive addendum to this Agreement exclusively to reflect, to the extent necessary, the new structure under which the sale would be carried out, which could involve the contribution of the real estate properties subject to sale to a trust, the contribution of the respective fiduciary rights to a new company, and the assignment of this Agreement to said new company by THE PROMISING SELLER . The non - application of the clauses agreed upon herein, or the absence of claims for possible breaches, or silence due to the non - application of the Agreement, shall in no case imply novation, forgiveness, or remission of the obligations or rights of each of the Parties, and therefore the Agreement shall remain in full force and effect . 107534 Scan QR to verify/Escanear QR para verificar. Translation date/Fecha de traduccion: 20/03/2026

TWENTY - FIRST : - ADDRESSES : The Parties signing this Agreement shall have the following addresses to which they shall be required to send, address, and communicate any correspondence arising from the performance of this Agreement : PROMISING SELLER Email : [Redacted – Confidential Information] Physical address: [Redacted – Confidential Information] . With a copy to (which does not constitute notification): [Redacted – Confidential Information] PROMISING BUYER: COLLECTIVE MINING LIMITED SUCURSAL COLOMBIA To: Natalia Andrea Hernández Arias. Email: notificaciones@collectivemining.com Physical address: Calle 3 Sur No. 43A – 52, Oficina 501, Edificio 43 Avenida, B/ Poblado, Medellín - Antioquia For the record, this Agreement is signed in Medellín on the Twenty - Fifth (10) day of March of the year 2026, with counterparts of equal validity provided to the Parties. PROMISING SELLER PROMISING BUYER 107535 Scan QR to verify/Escanear QR para verificar. Translation date/Fecha de traduccion: 20/03/2026

[Redacted – Confidential Information] ID Card No. [Redacted – Confidential Information] NATALIA ANDREA HERNANDEZ ARIAS ID Card No. [Redacted – Confidential Information] Alternate Legal Representative 107536 Scan QR to verify/Escanear QR para verificar. Translation date/Fecha de traduccion: 20/03/2026

ANNEX NO. 1: CARTOGRAPHIC ANNEX The Cadastral Reference Map corresponding to the properties covered by this Promise of sale and purchase forms an integral part of this Agreement and contains the graphic delimitation of the Properties according to the cadastral information available on the date of signing this Agreement . The aforementioned annex is incorporated for illustrative and geographical identification purposes, without modifying, replacing, or prevailing over the boundaries, capacity, and other technical specifications contained in the respective Real Estate Registration folios and without prejudice to the sale of the properties as a whole . The Parties declare that they are aware of, have reviewed, and accept the content of Annex No . 1 , which they sign as a sign of approval and which is understood to be incorporated into this Agreement for all legal purposes MAP [Redacted – Confidential Information] ID Card No . [Redacted – Confidential Information] NATALIA ANDREA HERNANDEZ ARIAS ID Card No. [Redacted – Confidential Information] 107537 Scan QR to verify/Escanear QR para verificar. Translation date/Fecha de traduccion: 20/03/2026

FAQ

What major transaction did Collective Mining (CNL) disclose in this Form 6-K?

Collective Mining disclosed a binding agreement to buy remaining surface rights for its Guayabales Project in Colombia. The material change report describes a cash consideration of US$34 million for these lands, which are needed for future mining operations and align with mineral titles already held or optioned.

How much will Collective Mining (CNL) pay under the Guayabales surface rights agreement?

The translated contract sets a total price of US$33,581,007, within an aggregate US$34 million cash commitment. Payments combine advance installments in 2026–2027 with scheduled tranches from 2027 to 2030, plus 6.0% effective annual interest on the outstanding balance once the sale deed is executed.

Over what period are Collective Mining’s (CNL) surface rights payments scheduled?

Most of Collective Mining’s payments are scheduled between 2027 and 2030, with advances beginning in 2026. The payment table includes eight main installments from March 2027 through July 2030, supplemented by three advance payments that begin on March 11, 2026, and run through January 7, 2027.

What interest terms apply to Collective Mining’s (CNL) Guayabales land payments?

From the signing of the final sale deed, a 6.0% effective annual interest rate applies to unpaid balances. Interest is calculated and paid with each scheduled installment. If Collective Mining misses a payment, default interest at the maximum usury limit set by the Colombian Financial Superintendency applies to overdue principal and unpaid interest.

How does this agreement affect Collective Mining’s (CNL) exploration plans at Guayabales?

The agreement secures surface access and lets Collective Mining immediately conduct exploration and technical work on the properties. With surface titles owned or under agreement, the company plans to start building an exploration adit in the fourth quarter of 2026, enabling underground drill chambers to test its Trap system.

What operational rights does Collective Mining (CNL) gain on the acquired properties before full payment?

Collective Mining is allowed to enter and use the properties for studies, drilling, mining operations, and related activities from signing. The contract lists geological mapping, geophysical work, drilling platforms, environmental monitoring, infrastructure installation, and technical mining studies, without extra charges beyond the agreed purchase price while obligations are met.

Filing Exhibits & Attachments

2 documents

Press Releases

• EX-99.1 MATERIAL CHANGE REPORT 19.2 KB
• EX-99.2 MATERIAL AGREEMENT - PROMISE OF PURCHASE AND SALE AGREEMENT (REDACTED) 63.4 KB