Mako Mining — M&A Activity 2024

Apr 4, 2024

VOTING AND SUPPORT AGREEMENT

THIS AGREEMENT is made as of the 25[th] day of March, 2024.

BETWEEN:

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(the “ Securityholder ”)

• and -

MAKO MINING CORP. ,

a company existing under the laws of the Province of British Columbia

(the “ Purchaser ”)

WHEREAS as of the date hereof, the Securityholder is the registered and/or beneficial owner of, or has control or direction over, that number of issued and outstanding common shares (the “ Shares ”) in the capital of Goldsource Mines Inc. (the “ Company ”), a corporation existing under the laws of the Province of British Columbia, set forth on the Securityholder’s signature page attached to this Agreement.

AND WHEREAS the Securityholder is the holder of that number of options to acquire Shares (“ Options ”) and Share purchase warrants of the Company (“ Warrants ”, and together with the Options, “ Convertible Securities ”) set forth on the Securityholder’s signature page attached to this Agreement.

AND WHEREAS the Purchaser and the Company have entered into an arrangement agreement (the “ Arrangement Agreement ”) concurrently with the entering into of this Agreement and propose to consummate an arrangement as set forth in the plan of arrangement attached to the Arrangement Agreement (the “ Arrangement ”).

AND WHEREAS the Securityholder acknowledges that the Purchaser would not enter into the Arrangement Agreement but for the execution and delivery of this Agreement by the Securityholder.

NOW THEREFORE this Agreement witnesses that, in consideration of the premises and the covenants and agreements herein contained, the parties hereto agree as follows:

ARTICLE 1 INTERPRETATION

Section 1.1 Definitions

All terms used in this Agreement that are not defined herein and that are defined in the Arrangement Agreement shall have the respective meanings ascribed to them in the Arrangement Agreement. For the purposes of this Agreement:

“ Subject Options ” means that number of Options set forth on the Securityholder’s signature page attached to this Agreement, being all of the Options owned legally or beneficially by the Securityholder or over which the Securityholder exercises control or direction;

“ Subject Securities ” means, collectively, the Securityholder’s Subject Shares, Subject Options and Subject Warrants;

“ Subject Shares ” means that number of Shares set forth on the Securityholder’s signature page attached to this Agreement, being all of the Shares owned legally or beneficially, either directly or indirectly, by the Securityholder or over which the Securityholder exercises control or direction, either directly or indirectly, and shall further include any Shares issued upon the conversion, exercise or vesting, as applicable, of Convertible Securities or otherwise acquired by the Securityholder after the date hereof; and

“ Subject Warrants ” means that number of Warrants set forth on the Securityholder’s signature page attached to this Agreement, being all of the Warrants owned legally or beneficially by the Securityholder or over which the Securityholder exercises control or direction. ARTICLE 2 COVENANTS

Section 2.1 General Covenants of the Securityholder

The Securityholder hereby covenants and agrees in favour of the Purchaser that, from the date hereof until the termination of this Agreement in accordance with Article 4, except as permitted by this Agreement:

• (a) at any meeting of securityholders of the Company (including in connection with any combined or separate vote of any sub-group of securityholders of the Company that may be required to be held and of which sub-group the Securityholder forms part) called to vote upon the Arrangement or at any adjournment or postponement thereof or in any other circumstances upon which a vote, consent or other approval with respect to the Arrangement is sought, the Securityholder shall cause its Subject Securities (which have a right to vote at such meeting) to be counted as present for purposes of establishing quorum and shall vote (or cause to be voted) its Subject Securities (which have a right to vote at such meeting) in favour of the approval of the Arrangement and any other matter necessary for the consummation of the Arrangement;

• (b) at any meeting of securityholders of the Company (including in connection with any combined or separate vote of any sub-group of securityholders of the Company that may be required to be held and of which sub-group the Securityholder forms part) or at any adjournment or postponement thereof or in any other circumstances upon which a vote, consent or other approval of all or some of the shareholders or other securityholders of the Company is sought (including by written consent in lieu of a meeting), the Securityholder shall cause its Subject Securities (which have a right to vote at such meeting) to be counted as present for purposes of establishing quorum and shall vote (or cause to be voted) its Subject Securities (which have a

right to vote at such meeting) against any Acquisition Proposal and/or any matter that could reasonably be expected to delay, prevent, impede or frustrate the successful completion of the Arrangement and each of the transactions contemplated by the Arrangement Agreement (the “ Prohibited Matters ”);

• (c) the Securityholder shall revoke any and all previous proxies granted or voting instruction forms or other voting documents delivered that may conflict or be inconsistent with the matters set forth in this Agreement;

• (d) subject to Section 5.1, the Securityholder shall not, directly or indirectly, through any officer, director, employee, representative, agent or otherwise, and shall not permit any such person to:

• (i) make, initiate, solicit, promote, entertain or encourage (including by way of furnishing or affording access to information or any site visit or entering into any form of agreement, arrangement or understanding), or take any other action that facilitates, directly or indirectly, any inquiry or the making of any inquiry, proposal or offer with respect to an Acquisition Proposal or that reasonably could be expected to constitute or lead to an Acquisition Proposal;

• (ii) participate, directly or indirectly, in any discussions or negotiations with, furnish information to, or otherwise co-operate in any way with, any person (other than the Purchaser and its subsidiaries) regarding an Acquisition Proposal or any inquiry, proposal or offer that reasonably could be expected to constitute or lead to an Acquisition Proposal;

• (iii) withdraw, amend, modify or qualify, or publicly propose or state an intention to withdraw, amend, modify or qualify support for the Arrangement; or

• (iv) agree to approve, accept, recommend, enter into, or propose publicly to agree to, approve, accept, recommend or enter into, any agreement, understanding or arrangement in respect of an Acquisition Proposal;

• (e) subject to Section 5.1, the Shareholder will immediately cease and cause to be terminated any existing solicitation, encouragement, discussion, negotiation or any other activities with any person (other than the Purchaser) conducted prior to the date hereof by such Shareholder or, if applicable, any of its officers, directors, employees, representatives or agents, with respect to any potential Acquisition Proposal, or any inquiry, proposal or offer that reasonably could be expected to constitute or lead to an Acquisition Proposal;

• (f) the Securityholder shall not, directly or indirectly, without the prior written consent of the Purchaser (such consent not to be unreasonably withheld, conditioned or delayed): (i) sell, transfer, assign, grant a participation interest in, option, pledge, hypothecate, grant a security interest in or otherwise convey or encumber (each, a “ Transfer ”), or enter into any agreement, option or other arrangement with respect

to the Transfer of, any of its Subject Securities to any person, other than (A) pursuant to the Arrangement Agreement, (B) to another shareholder of the Company that has executed a voting and support agreement in connection with the Arrangement Agreement in the same form as this Agreement, or (C) to a person controlled by the Securityholder who, prior to any such Transfer, executes an agreement in favour of the Purchaser in the same form as this Agreement; or (ii) grant any proxies or power of attorney, deposit any of its Subject Securities into any voting trust or enter into any voting arrangement, whether by proxy, voting agreement or otherwise, with respect to its Subject Securities, other than pursuant to this Agreement;

• (g) subject to Section 5.1, the Securityholder shall not take any other action of any kind, directly or indirectly, which might reasonably be regarded as likely to reduce the success of, or delay or interfere with the completion of the transactions contemplated by the Arrangement Agreement;

• (h) the Securityholder shall, as a holder of Subject Securities, cooperate with the Company and the Purchaser in connection with any reasonable request made by either party to carry out the Arrangement and this Agreement, and to oppose any of the Prohibited Matters;

• (i) the Securityholder shall not exercise any rights of appraisal or rights of dissent or any other rights or remedies, as applicable, with respect to the Arrangement or the transactions contemplated by the Arrangement Agreement that the Securityholder may have; and

• (j) without limiting the generality of Section 5.2, no later than 10 Business Days prior to the date of the Company Meeting: (i) with respect to any Subject Securities which have a right to vote at such meeting that are registered in the name of the Securityholder, the Securityholder shall deliver or cause to be delivered, in accordance with the instructions set out in the Company Circular and with a copy to the Purchaser concurrently with such delivery, a duly executed proxy or proxies directing the holder of such proxy or proxies to vote in favour of the Arrangement; and (ii) with respect to any Subject Securities which have a right to vote at such meeting that are beneficially owned by the Securityholder but not registered in the name of the Securityholder, the Securityholder shall deliver a duly executed voting instruction form to the intermediary through which the Securityholder holds its beneficial interest in the Securityholder’s Subject Securities, with a copy to the Purchaser concurrently, instructing that the Securityholder’s Subject Securities (which have a right to vote at such meeting) be voted at the Company Meeting in favour of the Arrangement. Such proxy or proxies shall name those individuals as may be designated by the Company in the Company Circular and such proxy or proxies or voting instructions shall not be revoked, withdrawn or modified without the prior written consent of the Purchaser unless this Agreement is terminated in accordance with Article 4 prior to the exercise of such proxy.

Section 2.2 Covenants of the Purchaser

The Purchaser agrees to comply with its obligations under the Arrangement Agreement. The Purchaser hereby agrees and confirms to the Securityholder that it shall take all steps required of it to consummate the Arrangement and cause the consideration to be made available to pay for the Subject Securities, in each case in accordance with and subject to the terms and conditions of the Arrangement Agreement and the Plan of Arrangement.

ARTICLE 3 REPRESENTATIONS AND WARRANTIES

Section 3.1 Representations and Warranties of the Securityholder

The Securityholder hereby represents and warrants to and covenants with the Purchaser as follows, and acknowledges that the Purchaser is relying upon such representations, warranties and covenants in entering into this Agreement and the Arrangement Agreement:

• (a) Incorporation; Capacity; Authorization. Where the Securityholder is a corporation, it is a corporation duly incorporated and validly existing under the laws of its jurisdiction of incorporation; it has the requisite corporate power and capacity and has received all requisite approvals to execute and deliver this Agreement and to perform its obligations hereunder. Where the Securityholder is not a corporation, he, she or it has the power and capacity and has received all requisite approvals to execute and deliver this Agreement and to perform his, her or its obligations hereunder.

• (b) Enforceable. This Agreement has been duly executed and delivered by the Securityholder and constitutes a legal, valid and binding obligation, enforceable against the Securityholder in accordance with its terms, subject to bankruptcy, insolvency and other similar Laws affecting creditors’ rights generally, and to general principles of equity.

• (c) Ownership of Shares and Other Securities. The Securityholder is the sole registered and/or beneficial owner of its Subject Securities. The Securityholder does not directly or indirectly control or direct, or own or have any registered or beneficial interest in, any other securities of the Company, other than as disclosed on the Securityholder’s signature page attached to this Agreement.

• (d) No Agreements. No person has any agreement or option, or any right or privilege (whether by law, pre-emptive or contractual) capable of becoming an agreement or option, for the purchase, acquisition or Transfer of any of the Subject Securities, or any interest therein or right thereto, except pursuant to this Agreement or the Arrangement Agreement.

• (e) Voting. The Securityholder has the sole and exclusive right to enter into this Agreement and to vote (or cause to be voted) the Subject Securities (which have a right to vote at such meeting) as contemplated herein. None of the Subject Securities is subject to any proxy, power of attorney, attorney-in-fact, voting trust,

vote pooling or other agreement with respect to the right to vote, call meetings of shareholders or give consents or approvals of any kind.

• (f) Legal Proceedings. There are no legal proceedings in progress or pending before any Governmental Authority or threatened against the Securityholder or any judgment, decree or order against the Securityholder that would adversely affect in any material manner the ability of the Securityholder to enter into this Agreement and to perform its obligations hereunder or the title of the Securityholder to any of the Subject Securities.

Section 3.2 Representations and Warranties of the Purchaser

The Purchaser hereby represents and warrants and covenants to the Securityholder, acknowledging that the Securityholder is relying upon such representations, warranties and covenants in entering into this Agreement:

• (a) Capacity. The Purchaser validly subsists under the laws of the Province of British Columbia and has all necessary requisite corporate power and capacity to execute and deliver this Agreement and to perform its obligations hereunder.

• (b) Authorization. The execution, delivery and performance of this Agreement by the Purchaser has been duly authorized and no other internal proceedings on its part is necessary to authorize this Agreement or the transactions contemplated hereunder.

• (c) Enforceable. This Agreement has been duly executed and delivered by the Purchaser and constitutes a legal, valid and binding obligation, enforceable against it in accordance with its terms, subject to bankruptcy, insolvency and other similar Laws affecting creditors’ rights generally, and to general principles of equity.

• (d) No Breach. Neither the execution and delivery of this Agreement or the Arrangement Agreement by the Purchaser, nor the compliance by it with any of the provisions hereof or thereof will result in a violation or breach of, require any consent to be obtained under or give rise to any termination rights or payment obligation under any provision of:

• (i) its respective articles or by-laws (or other constating documents);

• (ii) any resolution of its respective board of directors (or any committee thereof) or of its respective shareholders; or

• (iii) any contract, commitment, agreement, understanding or arrangement of any kind to which the Purchaser is or will be a party and by which Purchaser is or will be bound at the time of such performance, except as contemplated in, or otherwise permitted by, the Arrangement Agreement.

ARTICLE 4 TERMINATION

Section 4.1 Termination

This Agreement may be terminated:

• (a) at any time upon the mutual written agreement of the Purchaser and the Securityholder;

• (b) by the Purchaser if: (i) any of the representations and warranties of the Securityholder in this Agreement shall not be true and correct in all material respects, provided in such case that the Purchaser has notified the Securityholder in writing of any of the foregoing events and the same has not been cured by the Securityholder within 10 Business Days of the date that such notice was received by the Securityholder; or (ii) the Securityholder shall not have complied with its covenants to the Purchaser contained in this Agreement and such noncompliance has or may reasonably be expected to have an adverse effect on the consummation of the transactions contemplated by the Arrangement Agreement;

• (c) by the Securityholder or the Purchaser if the Effective Date has not occurred by the Outside Date;

• (d) by the Securityholder if: (i) any of the representations and warranties of the Purchaser in this Agreement shall not be true and correct in all material respects, provided in such case that the Securityholder has notified the Purchaser in writing of any of the foregoing events and the same has not been cured by the Purchaser within 10 Business Days of the date that such notice was received by the Purchaser; or (ii) without the Securityholder’s prior written consent (such consent not to be unreasonably withheld, conditioned or delayed), the Arrangement Agreement is amended in any manner that would result in a material decrease in the amount of Consideration set out in the Arrangement Agreement (provided that neither a decrease in the market price of the common shares of the Purchaser nor an increase in the market price of the Shares will constitute a decrease in the amount of Consideration payable for the Subject Securities); or

• (e) automatically on the earlier of (i) the termination of the Arrangement Agreement in accordance with its terms and (ii) the Effective Time.

Section 4.2 Effect of Termination

If this Agreement is terminated in accordance with this Article 4, the provisions of this Agreement will become void and no party shall have liability to any other party, except in respect of a breach of this Agreement which occurred prior to such termination and the Securityholder shall be entitled to withdraw any form of proxy or power of attorney which it may have given with respect of the Subject Securities or, if applicable, to withdraw any deposited Subject Securities to any take-over bid.

ARTICLE 5 GENERAL

Section 5.1 Fiduciary Obligations

Notwithstanding anything in this Agreement to the contrary, if the Securityholder or a director or officer of the Securityholder (or any of its affiliates) is also a director or officer of the Company, such individual shall be entitled to exercise his or her fiduciary duties in his or her capacity as a director or officer of the Company. Nothing in this Agreement prohibits such individual from exercising his or her duties as a director or officer of the Company, including engaging in discussions or negotiations in his or her capacity as a director or officer of and on behalf of the Company.

Section 5.2 Further Assurances

Each of the Securityholder and the Purchaser will, from time to time, execute and deliver all such further documents and instruments and do all such acts and things as the other party may reasonably require and at the requesting party’s cost to effectively carry out or better evidence or perfect the full intent and meaning of this Agreement.

Section 5.3 Disclosure

Each of the Securityholder and the Purchaser hereby consents to the disclosure of the substance of this Agreement in any press release or any circular relating to the Company Meeting and the filing of a copy thereof by the Company at www.sedarplus.ca.

Except as set forth above or as required by applicable laws or regulations or by any Governmental Authority or in accordance with the requirements of any stock exchange, the Securityholder shall not make any public announcement or statement with respect to this Agreement without the approval of the Purchaser, which shall not be unreasonably withheld or delayed. The Securityholder agrees to consult with the Purchaser prior to issuing each public announcement or statement with respect to this Agreement, subject to the overriding obligations of Laws.

Section 5.4 Time

Time shall be of the essence in this Agreement.

Section 5.5 Governing Law

This Agreement shall be governed by and construed in accordance with the laws of the Province of British Columbia and the federal laws of Canada applicable therein. Each of the parties hereby irrevocably attorns to the jurisdiction of the courts of the Province of British Columbia in respect of all matters arising under or in relation to this Agreement.

Section 5.6 Entire Agreement

This Agreement, including the schedules hereto and the provisions of the Arrangement Agreement incorporated herein by reference constitutes the entire agreement and understanding between the parties hereto with respect to the subject matter hereof and supersedes any prior agreement, representation or understanding with respect thereto.

Section 5.7 Amendments

This Agreement may not be modified, amended, altered or supplemented, except upon the execution and delivery of a written agreement executed by each of the parties hereto.

Section 5.8 Severability

If any term or other provision of this Agreement is invalid, illegal or incapable of being enforced by any rule of law or public policy, all other conditions and provisions of this Agreement shall nevertheless remain in full force and effect. Upon such determination that any term or other provision is invalid, illegal or incapable of being enforced, the parties hereto shall negotiate in good faith to modify this Agreement so as to effect the original intent of the parties as closely as possible in a mutually acceptable manner in order that the terms of this Agreement remain as originally contemplated to the fullest extent possible.

Section 5.9 Assignment

The provisions of this Agreement shall be binding upon and enure to the benefit of the parties hereto and their respective successors and permitted assigns, provided that neither party may assign, delegate or otherwise transfer any of its rights, interests or obligations under this Agreement without the prior written consent of the other party hereto, except that the Purchaser may assign, delegate or otherwise transfer any of its rights, interests or obligations under this Agreement to an affiliate, without reducing its own obligations hereunder, without the consent of the Securityholder.

Section 5.10 Survival

If this Agreement is terminated, this Agreement shall become void and of no further force or effect without liability of any party (or any shareholder, director, officer, employee, agent, consultant or representative of such party) to any other party to this Agreement.

Section 5.11 Notices

Any notice, request, consent, agreement or approval which may or is required to be given pursuant to this Agreement shall be in writing and shall be sufficiently given or made if delivered, or sent by email, in the case of:

• (a) the Purchaser, addressed as follows:

Mako Mining Corp. 838 West Hastings Street, Suite 700 Vancouver, BC V6C 0A6

Attention: Akiba Leisman Email: [Redacted – Personal Information]

with a copy (which shall not constitute notice) to:

Cassels Brock & Blackwell LLP Suite 3200, Bay Adelaide Centre – North Tower 40 Temperance Street Toronto, ON M5H 0B4 Attention: Andrea FitzGerald Email: afitzgerald@cassels.com

(b) the Securityholder, as set forth on the signature page to this Agreement,

with a copy (which shall not constitute notice) to:

Goldsource Mines Inc. 570 Granville Street, Suite 501 Vancouver, BC V6C 3P1

Attention: Stephen Parsons Email: [Redacted – Personal Information]

AND

Koffman Kalef LLP 1900 – 885 West Georgia Street Vancouver, British Columbia, Canada, V6C 3H4

Attention: Bernard Poznanski Email: bp@kkbl.com

or to such other address as the relevant person may from time to time advise by notice in writing given pursuant to this Section. The date of receipt of any such notice, request, consent, agreement or approval shall be deemed to be the date of delivery or sending thereof if sent or delivered during normal business hours on a Business Day at the place of receipt and, otherwise, on the next following Business Day.

Section 5.12 Specific Performance and other Equitable Rights

It is recognized and acknowledged that a breach by any party of any material obligations contained in this Agreement will cause the other party to sustain injury for which it would not have an adequate remedy at law for money damages. Accordingly, in the event of any such breach, any

aggrieved party shall be entitled to the remedy of specific performance of such obligations and interlocutory, preliminary and permanent injunctive and other equitable relief in addition to any other remedy to which it may be entitled, at law or in equity.

Section 5.13 Expenses

Each of the parties shall pay its respective legal, financial advisory and accounting costs and expenses incurred in connection with the preparation, execution and delivery of this Agreement and all documents and instruments executed or prepared pursuant hereto and any other costs and expenses whatsoever and howsoever incurred.

Section 5.14 Independent Legal Advice

Each of the parties hereby acknowledges that it has been afforded the opportunity to obtain independent legal advice and confirms by the execution and delivery of this Agreement that they have either done so or waived their right to do so in connection with the entering into of this Agreement.

Section 5.15 Counterparts

This Agreement may be executed in any number of counterparts (including counterparts by facsimile) and all such counterparts taken together shall be deemed to constitute one and the same instrument. The parties shall be entitled to rely upon delivery of an executed facsimile or similar executed electronic copy of this Agreement, and such facsimile or similar executed electronic copy shall be legally effective to create a valid and binding agreement between the parties.

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IN WITNESS WHEREOF the parties have executed this Agreement as of the date first written above.

MAKO MINING CORP.

By:

Name: Akiba Leisman Title: Chief Executive Officer

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(Print Name of Securityholder)

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(Signature of Securityholder or Authorized Signatory)

(Place of Residency)

(Print Name and Title)

Address:

Telephone:

Email:

(Number of Shares Held)

(Number of Options Held)

(Number of Warrants Held)