HOCHSCHILD MINING PLC — AGM Information 2021

Apr 22, 2021

Notice of Annual General Meeting

Hochschild Mining PLC

Thursday, 27th May 2021 at 2.30pm

If you are in any doubt about the contents of this document, you should consult a person authorised under the Financial Services and Markets Act 2000 who specialises in advising in connection with shares and other securities. If you have sold or otherwise transferred all of your shares in Hochschild Mining PLC (the "Company"), please send this document to the purchaser or transferee or to the stockbroker, bank or other agent through whom the sale or transfer was effected, for transmission to the purchaser or transferee.

Contents

• 3 Letter from the Chairman
• 4 Notice of 2021 Annual General Meeting
• 6 Notes to the Notice of AGM
• 8 Explanatory Notes on Resolutions
• 12 Appendix Summary of Proposed Amendments to the Company's Articles of Association
• 12 Shareholder Information

Hochschild Mining PLC

(incorporated and registered in England and Wales No. 05777693) Registered office: 17 Cavendish Square London W1G 0PH 15 April 2021

Dear Shareholder

I am writing to inform you that the fifteenth Annual General Meeting (the "AGM") of Hochschild Mining PLC (the "Company") will be held at 2.30pm on Thursday 27th May 2021 at 17 Cavendish Square, London W1G 0PH.

AGM ARRANGEMENTS

At the time of writing, legislation and government guidance relating to Covid-19 prohibits public gatherings and requires travel to be minimised. In light of the government's announced Covid roadmap, it appears highly unlikely that shareholders will be legally able to physically attend the AGM on 27th May 2021.

The health of all concerned is paramount and therefore the Company's board of directors (the "Board") has decided to hold the AGM as a closed meeting with only the requisite Company personnel attending to enable the formal business of the AGM to be conducted. As a result, shareholders should not attend the AGM in person and are strongly encouraged to submit their votes by appointing the Chairman of the meeting as their proxy. In order to be validly cast, proxy votes must be received by our registrars, Link Group, by 2.30pm on Tuesday 25 May 2021. Full details on how to submit proxy votes can be found on page 6 of this document.

The Board regrets not being able to meet with shareholders at the AGM and so, to facilitate direct engagement, a call has been arranged to take place immediately after the AGM. Shareholders wishing to participate in the call are requested to register their attendance by email or telephone as detailed on page 7 of this document.

In the event circumstances change before the time of the AGM, we will notify shareholders of any change to the arrangements through announcements via the London Stock Exchange and by publishing details on the Company website at http://www.hochschildmining. com/en/investors/shareholder_information/agm__egm_information as early as is possible before the date of the meeting.

AGM PROCEEDINGS

The business to be conducted at the meeting is set out in the formal notice on pages 4 and 5, which is followed by some explanatory notes on each of the proposed resolutions. In addition to the regular AGM business, I would like to highlight the following non-routine matters:

current policy and the proposed revised policy can be found on page 105 of the 2020 Annual Report, with the full text of the revised

–We are also proposing to update the Company's articles of association (the "Articles") in light of (among other things) developments

• –Shareholders are being asked to approve a revised Directors' Remuneration Policy. A summary of the differences between the policy set out on pages 104 to 110 of the 2020 Annual Report;
• in market practice and technological advancements including the ability to hold general meetings in a hybrid format (meaning a physical general meeting at which shareholders can attend and vote in person or remotely). The Company would also retain the ability to hold general meetings in the traditional way as a physical meeting without remote attendance. No decision has been taken on how best to hold general meetings in the future, but the Company believes that it is important to have flexibility to hold general meetings in a different format, which is what the changes to the Articles would achieve. An explanation of the changes proposed to the Articles are included in the appendix on page 12, together with information on how to view the new Articles.

Voting will be conducted by way of poll vote in keeping with the Company's usual practice. In addition, in compliance with the Listing Rules that apply as a result of my shareholding in the Company, the resolutions seeking the re-election of the Company's independent Directors (Resolutions 5, 6, 8, 10, 12 and 13) will only be passed if approved by both (i) a majority of all votes cast and (ii) a majority of the votes cast but excluding the votes attached to my shareholding.

Biographical details of the independent Directors are provided on pages 74 and 75 of the 2020 Annual Report and further information with respect to each one is provided in the explanatory notes from page 8 of this document.

The AGM is usually regarded as a valuable opportunity for shareholders to communicate with their Board and so we would encourage you to register for the shareholder call and, should you have any questions with regards to any of the items of proposed business at the AGM, please do send them by email to chairman@hocplc.com

Your Board considers that the proposals described in this document are likely to promote the success of the Company for the benefit of shareholders as a whole and unanimously recommends shareholders to vote in favour of the resolutions proposed.

Those Directors who hold Ordinary Shares in the Company intend to vote their shares in favour of all of the resolutions. With best wishes

Eduardo Hochschild Chairman

Hochschild Mining PLC

Registered Office: 17 Cavendish Square London W1G 0PH United Kingdom Tel: +44 (0) 20 3709 3260 Fax: +44 (0) 20 3709 3261 info@hocplc.com

www.hochschildmining.com

This document is important and requires your immediate attention Letter from the Chairman

• (iii) references to an allotment of equity securities shall include a sale of treasury shares; and
• (iv) the nominal amount of any securities shall be taken to be, in the case of rights to subscribe for or convert any securities into shares of the Company, the nominal amount of such shares which may be allotted pursuant to such rights.
• 18 THAT, subject to the passing of Resolution 16 above and in addition to any authority granted under Resolution 17 above, the Directors be authorised to allot equity securities (as defined in Section 560(1) of the 2006 Act) wholly for cash pursuant to the authority given by Resolution 16 above or where the allotment constitutes an allotment of equity securities by virtue of Section 560(3) of the 2006 Act as if Section 561(1) of the 2006 Act did not apply to any such allotment, such authority to be:
  • 18.1 limited to the allotment of equity securities or sale of treasury shares up to an aggregate nominal amount of £6,423,444; and
  • 18.2 used only for the purposes of financing (or refinancing, if the authority is to be used within six months after the original transaction) a transaction which the Board of Directors of the Company determines to be an acquisition or other capital investment of a kind contemplated by the Statement of Principles on Disapplying Pre-Emption Rights most recently published by the Pre-Emption Group prior to the date of this notice,

such authority to expire at the end of the next Annual General Meeting of the Company or at the close of business on 30 June 2022, whichever is the earlier, but so that the Company may, before such expiry, make offers and enter into agreements which would, or might, require equity securities to be allotted and treasury shares to be sold after the authority given by this resolution has expired and the Directors may allot equity securities and sell treasury shares under any such offer or agreement as if the authority had not expired.

19 THAT, the Company be and is hereby generally and unconditionally authorised for the purpose of Section 701 of the 2006 Act to make one or more market purchases (as defined in Section 693 of that Act) of Ordinary Shares of £0.25 each in the capital of the Company provided that:

19.1 the maximum aggregate number of Ordinary Shares authorised to (representing an amount equal to 10 per cent of the Company's issued ordinary share capital as

19.2 the minimum price which may be paid for an Ordinary Share is

19.3 the maximum price which may be paid for an Ordinary Share is an amount equal to the higher of (i) an amount equal to 5% above the average closing price of such Ordinary Shares for the five business days on the London Stock Exchange prior to the date of purchase; and (ii) an amount equal to the higher of the price of the last independent trade of any Ordinary Share and the highest current independent bid for an Ordinary Share as derived from the London Stock Exchange Electronic Trading Service; and

• be purchased is 51,387,556 at 9 April 2021);
• £0.25 per Ordinary Share;
• the meeting and initialed by the Chairman of the meeting for the of Association.
• 21 THAT, a general meeting other than notice.

19.4 this authority shall expire at the conclusion of the Annual General Meeting of the Company held in 2022 or, if earlier, 30 June 2022 (except in relation to the purchase of shares the contract for which was concluded before the expiry of such authority and which might be executed wholly or partly after such expiry) unless such authority is renewed prior to such time.

20 THAT, with effect from the conclusion of the Annual General Meeting, the Articles of Association produced to purpose of identification be adopted as the Articles of Association of the Company in substitution for, and to the exclusion of, the existing Articles

an annual general meeting may be called on not less than 14 clear days'

By Order of the Board

R D Bhasin

Company Secretary 15 April 2021 Hochschild Mining PLC Registered Office: 17 Cavendish Square

London W1G 0PH

Company No: 05777693

Notice is hereby given that the fifteenth Annual General Meeting of Hochschild Mining PLC (the 'Company') will be held at 2.30pm on Thursday, 27th May 2021 at 17 Cavendish Square, London W1G 0PH to consider the following resolutions of which Resolutions 1 to 16 will be proposed as ordinary resolutions and Resolutions 17 to 21 will be proposed as special resolutions.

Ordinary resolutions

• 1 THAT, the audited accounts of the Company for the year ended 31 December 2020, together with the Directors' Report and the Auditors' Report thereon be received.
• 2 THAT, the Directors' Remuneration Report (excluding the Directors' Remuneration Policy set out on pages 104 to 110 of the report) for the year ended 31 December 2020 be approved.
• 3 THAT, the Directors' Remuneration Policy, the full text of which is contained in the Directors' Remuneration Report for the year ended 31 December 2020, as set out on pages 104 to 110 of the report be approved.
• 4 THAT, a final dividend for the financial year ended 31 December 2020 of 2.335 US cents per Ordinary Share be approved.
• 5 THAT, Graham Birch be re-elected as a Director of the Company.
• 6 THAT, Jorge Born Jr be re-elected as a Director of the Company.
• 7 THAT, Ignacio Bustamante be re-elected as a Director of the Company.
• 8 THAT, Jill Gardiner be elected as a Director of the Company.
• 9 THAT, Eduardo Hochschild be re-elected as a Director of the Company.
• 10 THAT, Eileen Kamerick be re-elected as a Director of the Company.
• 11 THAT, Dionisio Romero Paoletti be re-elected as a Director of the Company.
• 12 THAT, Michael Rawlinson be reelected as a Director of the Company.
• 13 THAT, Sanjay Sarma be re-elected as a Director of the Company.
• 14 THAT, Ernst & Young LLP be reappointed as auditors of the Company (the 'Auditors') until the conclusion of the next general meeting at which accounts are laid before the Company.
• 15 THAT, the Audit Committee of the Company be authorised to set the remuneration of the Auditors.
• 16 THAT, the Directors be and are hereby generally and unconditionally authorised pursuant to and in accordance with Section 551 of the Companies Act 2006 (the '2006 Act') to exercise all the powers of the Company to allot shares or grant rights to subscribe for or to convert any security into shares:
  • 16.1 up to an aggregate nominal amount of £42,818,681

16.2 comprising equity securities (as defined in Section 560(1) of the 2006 Act) up to a further aggregate nominal amount of £42,818,681 in connection with an offer by way of a rights issue,

such authorities to apply in substitution for all previous authorities and to expire at the end of the next Annual General Meeting of the Company or on 30 June 2022, whichever is the earlier but, in each case, so that the Company may make offers and enter into agreements during the relevant period which would or might require shares to be allotted or rights to subscribe for or to convert any security into shares to be granted after the authority ends.

For the purposes of this Resolution 'rights issue' means an offer to:

• (i) ordinary shareholders in proportion (as nearly as may be practicable) to their existing holdings; and
• (ii) people who are holders of other equity securities if this is required by the rights of those securities or, if the Directors consider it necessary, as permitted by the rights of those securities, to subscribe for further securities by means of the issue of a renounceable letter (or other negotiable document) which may be traded for a period before payment for the securities is due, but subject in both cases to such exclusions or other arrangements as the Directors may deem necessary or expedient in relation to treasury shares, fractional entitlements, record dates or legal, regulatory or practical problems in, or under the laws of, any territory.

Special resolutions

• 17 THAT, subject to the passing of Resolution 16 above, the Directors be authorised to allot equity securities (as defined in Section 560(1) of the 2006 Act) wholly for cash:
  • 17.1 pursuant to the authority given by paragraph 16.1 of Resolution 16 above or where the allotment constitutes an allotment of equity securities by virtue of Section 560(3) of the 2006 Act in each case:
• (i) in connection with a preemptive offer; and
• (ii) otherwise than in connection with a pre-emptive offer, up to an aggregate nominal amount of £6,423,444; and
  • 17.2 pursuant to the authority given by paragraph 16.2 of Resolution 16 above in connection with a rights issue, as if Section 561(1) of the 2006 Act did not apply to any such allotment,

such authorities to expire at the end of the next Annual General Meeting of the Company or at the close of business on 30 June 2022, whichever is earlier but so that the Company may, before such expiry, make offers, and enter into agreements during this period which would, or might, require equity securities to be allotted and treasury shares to be sold after the authority given by this resolution has expired and the Directors may allot equity securities and sell treasury shares under any such offer or agreement as if the authority had not expired.

• For the purposes of this Resolution:
  • (i) 'rights issue' has the same meaning as in Resolution 16 above;
  • (ii) 'pre-emptive offer' means an offer of equity securities open for acceptance for a period fixed by the Directors to (a) holders (other than the Company) on the register on a record date fixed by the Directors of Ordinary Shares in proportion to their respective holdings and (b) other persons so entitled by virtue of the rights attaching to any other equity securities held by them, but subject in both cases to such exclusions or other arrangements as the Directors may deem necessary or expedient in relation to treasury shares, fractional entitlements, record dates or legal, regulatory or practical problems in, or under the laws of, any territory;

Notice of 2021 Annual General Meeting

6 Any corporation which is a member can appoint one or more corporate representatives who may exercise on its behalf all of its powers as a member provided that they do not do so in relation to the same shares.

As mentioned in the Letter from the Chairman, in light of the evolving Covid-19 situation and the AGM arrangements, to ensure that your vote counts, shareholders (including corporate shareholders) are strongly encouraged to appoint the chairman of the AGM as their proxy.

• 7 Copies of (i) the Letters of Appointment between the Company and its Non-Executive Directors; (ii) the service contract of the Chief Executive Officer; and (iii) the proposed new Articles of Association of the Company (and a copy of the existing Articles of Association marked to show the changes being proposed in Resolution 20) will be available for inspection at the registered office of the Company during usual business hours on any weekday (Saturdays, Sundays and public holidays excluded) until the date of the AGM and also on the date and at the place of the AGM from 15 minutes prior to the commencement of the meeting until the conclusion thereof. In light of the prevailing Covidrelated restrictions, any inspection requests should be made by telephone to 020 3709 3263. A copy of the Company's existing Articles of Association marked up to show the proposed changes pursuant to Resolution 20 will also be made available on the Company website at http://www.hochschildmining.com/en/ investors/shareholder_information/ agm__egm_information.
• 8 Members should note that, under Section 527 of the 2006 Act, members meeting the threshold requirements set out in that section have the right to require the Company to publish on its website a statement setting out any matter relating to: (i) the audit of the Company's accounts (including the auditor's report and the conduct of the audit) that are to be laid before the AGM; or (ii) any circumstance connected with an auditor of the Company who ceases to hold office since the previous meeting at which
• 1 In the normal course, a member is entitled to appoint another person as his or her proxy to exercise all or any of his rights to attend and to speak and vote on his or her behalf at the AGM. A proxy need not be a member of the Company. A member may appoint more than one proxy in relation to the AGM provided that each proxy is appointed to exercise the rights attached to a different share or shares held by that member. Note that in light of announcements made by the UK Government, restrictions to control the spread of Covid-19 are likely to remain in force on the date of the AGM and therefore physical attendance at the AGM will not be possible.
• 2 The right to appoint a proxy does not apply to persons whose shares are held on their behalf by another person and who have been nominated to receive communications from the Company in accordance with Section 146 of the Companies Act 2006 ("2006 Act") ("Nominated Persons"). Nominated Persons may have a right under an agreement with the member who holds the shares on their behalf to be appointed (or to have someone else appointed) as a proxy. Alternatively, if Nominated Persons do not have such a right, or do not wish to exercise it, they may have a right under such an agreement to give instructions to the person holding the shares as to the exercise of voting rights.
• 3 A member can appoint a proxy (the "Proxy Vote"):
• –by logging on to www.signalshares. com and following the instructions;
• –by requesting a hard copy form of proxy directly from the registrars, Link Group, by calling (+44 (0)) 371 664 0300 (calls are charged at the standard geographic rate and will vary by provider. Calls outside the United Kingdom will be charged at the applicable international rate. Lines are open between 09:00 – 17:30, Monday to Friday excluding public holidays in England and Wales); or
• –in the case of CREST members, by utilising the CREST electronic proxy appointment service in accordance with the procedures set out in note 5 below.

In order for a proxy appointment to be valid a form of proxy must be completed. In each case, the form of proxy and any power of attorney or other authority under which it is signed (or a duly certified copy of any such authority) must be received by Link Group at 10th Floor, Central Square, 29 Wellington Street, Leeds, LS1 4DL by 2.30 pm on 25 May 2021, or if the AGM is adjourned, not less than 48 hours before the time of the holding of such adjourned AGM.

If you are an institutional investor you may be able to appoint a proxy electronically via the Proxymity platform. For further information regarding Proxymity, please go to www.proxymity.io. Your proxy must be lodged by 2.30pm on 25 May 2021 in order to be considered valid. Before you can appoint a proxy via this process you will need to have agreed to Proxymity's associated terms and conditions. It is important that you read these carefully as you will be bound by them and they will govern the electronic appointment of your proxy.

Completion and return of a Proxy Vote does not, in the usual course, prevent a member from subsequently attending the AGM and voting in person, however, restrictions currently put in place by the UK Government to prevent the spread of Coronavirus (Covid-19) mean that members should not attend the AGM.

• 4 Pursuant to regulation 41(1) of the Uncertificated Securities Regulations 2001 (2001 No. 3755), the Company specifies that only those shareholders registered on the register of members of the Company at close of business on 25 May 2021 shall be entitled to attend and vote at the AGM in respect of the number of Ordinary Shares registered in their name at that time. Changes to the register of members after close of business on 25 May 2021 shall be disregarded in determining the rights of any person to attend and vote at the AGM.
• 5 CREST members who wish to appoint a proxy or proxies by utilising the CREST electronic proxy appointment service may do so for the AGM and any adjournment(s) thereof by utilising the procedures described in the CREST Manual. CREST personal members or other CREST sponsored members, and those CREST members who have appointed a voting service provider(s), should refer to their CREST

sponsor or voting service provider(s),

who will be able to take the appropriate action on their behalf. In order for a proxy appointment made by means of CREST to be valid, the appropriate CREST message (a "CREST Proxy Instruction") must be properly authenticated in accordance with Euroclear's specifications and must contain the information required for such instructions, as described in the CREST Manual (available via www.euroclear.com/CREST). The message must, in order to be valid, (regardless of whether it constitutes the appointment of a proxy or an amendment to the instruction given to a previously appointed proxy) be transmitted so as to be received by the issuer's agent (ID RA10) by the latest time for receipt of proxy appointments specified above. For this purpose, the time of receipt will be taken to be the time (as determined by the timestamp applied to the message by the CREST Applications Host) from which the issuer's agent is able to retrieve the message by enquiry to CREST in the manner prescribed by CREST. After this time any change of instructions to a proxy appointed through CREST should be communicated to him or her by other means. CREST members and, where applicable, their CREST sponsors or voting service providers should note that Euroclear does not make available special procedures in CREST for any particular messages. Normal system timings and limitations will therefore apply in relation to the input of CREST Proxy Instructions. It is the responsibility of the CREST member concerned to take (or, if the CREST member is a CREST personal member or sponsored member or has appointed a voting service provider(s), to procure that his or her CREST sponsor or voting service provider(s) take) such action as shall be necessary to ensure that a message is transmitted by means of the CREST system by any particular time. In this connection, CREST members and, where applicable, their CREST sponsors or voting service providers are referred, in particular, to those sections of the CREST Manual concerning practical limitations of the CREST system and timings. The Company may treat as invalid a CREST Proxy Instruction in the

circumstances set out in Regulation 35(5)(a) of the Uncertificated Securities Regulations 2001.

Notes to the Notice of AGM

annual accounts and reports were laid. The Company may not require the members requesting any such website publication to pay its expenses in complying with Sections 527 or 528 (requirements as to website availability) of the 2006 Act. Where the Company is required to place a statement on its website under Section 527 of the 2006 Act, it must forward the statement to the Company's auditor not later than the time when it makes the statement available on its website. The business which may be dealt with at the AGM for the relevant financial year includes any statement that the Company has been required to publish on its website under Section 527 of the 2006 Act.

Shares in the Company on 9 April 2021, document, is 513,875,563 carrying one vote each on a poll. Therefore, the total number of votes exercisable as at 9

address provided in this notice (or in any related documents including the Chairman's letter) to communicate with the Company for any purposes

information required by Section 311A

• 9 The total number of issued Ordinary which is the latest practicable date before the publication of this April 2021 is 513,875,563.
• 10 Members may not use any electronic other than those expressly stated.
• 11 A copy of this notice, and other of the 2006 Act, can be found at www.hochschildmining.com.
• 12 Each of the resolutions will be voted democratic method of voting. they wish to cast their votes. The
• 13 In order to register your attendance at the shareholder call to be held immediately after the AGM, please certificate, a contact telephone is an 11 digit number which can be located on your share certificate.

on by poll and not by show of hands. A poll reflects the number of voting rights exercisable by each member and so the Board considers it a more Members and proxies will be asked to complete a poll card to indicate how results of the poll will be published on the Company's website and notified to the UK Listing Authority once the votes have been counted and verified.

email: chairman@hocplc.com or call 020 3709 3263. Please provide your full name as it appears on your share number and your Investor Code which

Company's exploration activities and results. In keeping with the Company's usual approach, the board evaluation process undertaken in 2020 sought the opinion of Board members on the performance of their fellow Directors which concluded that Mr Birch continues to make a significant and valued contribution to the Board.

GB3. How the Director is considered to be independent

Taking all relevant factors into consideration, including as described in GB1 above and Mr Birch's objective approach and contribution to Board discussions, the Directors concluded that Mr Birch is independent of character and judgement, and that there are no relationships or circumstances which are likely to affect, or could appear to affect, his judgement.

GB4. Process of Selection

Having been known to the Company since its IPO in 2006, Mr Birch was invited to join the Board in light of his relevant professional skill base.

Jorge Born Jr

JB1. Details of any existing or previous relationship, transaction or arrangement with a Relevant Party

Mr Born has served on the Board since the Company's listing in 2006.

JB2. Reasons why Director is considered to be effective

Mr Born has extensive experience gained from a number of senior executive positions both internationally and in his native Argentina where the Company has its only non-Peruvian operation. The Board benefits from Mr Born's experience in general and in particular his insight with regards to managing the Group's exposure to geopolitical risk and developing the Latin American growth strategy in general. In keeping with the Company's usual approach, the board evaluation process undertaken in 2020 sought the opinion of Board members on the performance of fellow Directors which concluded that Mr Born continues to make a significant and valued contribution to the Board.

JB3. How the Director is considered to be independent

Taking all relevant factors into consideration, including as described in JB1 above and Mr Born's objective approach and contribution to Board discussions, the Directors concluded that Mr Born is independent of character and judgement, and that there are no relationships or circumstances which are likely to affect, or could appear to affect, his judgement.

JB4. Process of Selection

Mr Born was appointed in preparation for the Company's listing in 2006 following the shortlisting of candidates by the Chairman with support from the Company's professional advisers.

Resolution 1

Annual Report and Accounts

The first item of business is the receipt, by shareholders, of the 2020 accounts together with the Directors' Report and the Auditor's Report. The accounts are prepared in accordance with International Financial Reporting Standards.

Resolutions 2 and 3

Directors' Remuneration Report The Directors' Remuneration Report comprises:

• –a statement by Michael Rawlinson, as the Chairman of the Company's Remuneration Committee;
• –the annual report on remuneration, which sets out payments made in respect of the financial year ended 31 December 2020; and
• –the Directors' Remuneration Policy in relation to future payments to the directors and former directors.

The statement by the Chairman of the Company's Remuneration Committee and the annual report on remuneration will, as in the past, be put to an annual advisory shareholder vote by ordinary resolution.

The Directors' Remuneration Policy, which sets out the Company's forward-looking policy on directors' remuneration (including the approach to exit payments to directors), is subject to a binding shareholder vote by ordinary resolution at least every three years.

The Directors' Remuneration Report is set out in full in the 2020 Annual Report on pages 102 to 119.

Resolution 2 is the ordinary resolution to approve the Directors' Remuneration Report, other than the part containing the Directors' Remuneration Policy. Resolution 2 is an advisory resolution and does not affect the future remuneration paid to any Director.

Resolution 3 is the ordinary resolution to approve the Directors' Remuneration Policy which is set out in the Directors' Remuneration Report in the 2020 Annual Report on pages 104 to 110.

Once the Directors' Remuneration Policy has been approved, all payments by the Company to the directors and any former directors must be made in accordance with the policy (unless a payment has been separately approved by a shareholder resolution). If the Company wishes to change the Directors' Remuneration Policy, it will need to put the revised policy to a shareholder vote again before it can implement the new policy. The policy, which was last approved by shareholders at the 2018 Annual General Meeting has been revised as described on page 105 of the 2020 Annual Report.

Explanatory Notes on Resolutions

Jill Gardiner

JG1. Details of any existing or previous relationship, transaction or arrangement

with a Relevant Party None.

JG2. Reasons why Director is considered to be effective

With over 20 years' experience gained in senior leadership roles at RBC Capital Markets, Ms Gardiner brings valuable capital markets and strategic experience in Canada dealing with companies operating in various sectors including mining. This is considered to be of particular value to the Company given the prevalence of mining companies listed in Canada and the Group's growth strategy. Ms Gardiner has formerly held positions at an energy regulation board and as a university lecturer in corporate finance and human resource management. Ms Gardiner is currently Chair of Trevali Mining Corporation and sits on the board of Capital Power Corporation.

In keeping with the Company's usual approach, the board evaluation process undertaken in 2020 sought the opinion of Board members on the performance of fellow Directors which concluded that Ms Gardiner's knowledge and skills are valuable additions to the Board.

JG3. How the Director is considered to be independent

Taking all relevant factors into consideration, the Board has concluded that Ms Gardiner is independent of character and judgement, and that there are no relationships or circumstances which are likely to affect, or could appear to affect, her judgement.

JG4. Process of Selection

Ms Gardiner's appointment was the culmination of a search process which was overseen by a working group on behalf of the Nomination Committee with support from the Company's financial advisers which provided a long-list of potential candidates for consideration. Please see pages 87 and 95 of the 2020 Annual Report for further details.

Eileen Kamerick

EK1. Details of any existing or previous relationship, transaction or arrangement with a Relevant Party

None.

EK2. Reasons why Director is considered

to be effective

• Mrs Kamerick brings expertise in relation to financial reporting and risk
• management given her career as a senior finance professional working across
• sectors including investment banking,
• recruitment, healthcare and the extractive
• industry. Mrs Kamerick serves as a
• Non-Executive Director of a number of other listed companies in the U.S.,

is a Board Leadership Fellow of the US National Association of Corporate Directors and is a lecturer at a number of universities on corporate governance. The Board is therefore able to benefit from Mrs Kamerick's expertise in relation to the Group's governance framework. In keeping with the Company's usual approach, the board evaluation process undertaken in 2020 sought the opinion of Board members on the performance of their fellow Directors which concluded that Mrs Kamerick makes a significant and valued contribution to the Board.

EK3. How the Director is considered to be independent

Taking all relevant factors into consideration, the Board has concluded that Mrs Kamerick is independent of character and judgement, and that there are no relationships or circumstances which are likely to affect, or could appear to affect, her judgement.

EK4. Process of Selection

Mrs Kamerick's appointment was the culmination of a search process which was overseen by a working group on behalf of the Nomination Committee with support from Odgers Berndtson who provided a long-list of potential candidates for consideration.

Michael Rawlinson

MR1. Details of any existing or previous relationship, transaction or arrangement with a Relevant Party None.

MR2. Reasons why Director is considered to be effective

Mr Rawlinson brings expertise of the sector in light of his wide ranging experience as a corporate financier and research analyst specialising in the mining sector. Mr Rawlinson has extensive capital markets experience having advised on the IPOs and following-on offerings for a number of companies including the Company's own IPO in 2006.

In addition, Mr Rawlinson serves as a Non-Executive Director of Capital Drilling Limited and as Non-Executive Chairman of Adriatic Metals Plc. In keeping with the Company's usual approach, the board evaluation process undertaken in 2020 sought the opinion of Board members on the performance of fellow Directors which concluded that Mr Rawlinson makes a significant and valued contribution to the Board.

MR3. How the Director is considered to be independent

Taking all relevant factors into consideration, the Board has concluded that Mr Rawlinson is independent of character and judgement, and that there are no relationships or circumstances which are likely to affect, or could appear to affect, his judgement.

Unless there are any changes to the policy, it is not envisaged that it will be submitted for shareholder approval until the Company's AGM in 2024 as required by the Companies Act 2006.

Resolution 4

Recommendation of final dividend

This resolution seeks shareholder approval of the final dividend recommended by the Directors. The Directors are proposing a final dividend of 2.335 US cents per Ordinary Share in the Company. If approved, the final dividend will be paid on 2 June 2021 to those shareholders on the register at the close of business on 7 May 2021.

Resolutions 5 to 13 Annual election of Directors

In line with the recommendation of the UK Corporate Governance Code, each Board member who has previously been elected is retiring at the AGM and submits himself or herself for re-election (or, in the case of Jill Gardiner, election) by shareholders.

Full biographical details of the Directors can be found on pages 74 and 75 of the 2020 Annual Report. As set out more fully in the Corporate Governance report from page 80 of the 2020 Annual Report, the Directors were subject to an internally-led evaluation process which concluded that each Board member makes a valued and effective contribution. This assessment was carried out in relation to the fulfilment of each Director's duty to act in the long-term interest of the Company, on behalf of its members, while also having due regard for other stakeholders.

Under the Listing Rules, Eduardo Hochschild (through his control of the shareholding of Pelham Investment Corporation) is classed as a "controlling shareholder" of the Company.

This means that the independent non-executive directors of the Company must be elected or re-elected by a majority of the votes cast by the 'independent shareholders' of the Company' as well as by a majority of the votes cast by all the shareholders. The 'independent shareholders' of the Company means all the shareholders of the Company other than Eduardo Hochschild and entities he controls.

Therefore, the resolutions for the reelection of the independent nonexecutive directors (Resolutions 5, 6, 8, 10, 12 and 13) will be taken on a poll and the votes cast by the independent shareholders and by all the shareholders will be calculated separately. Such resolutions will be passed only if a majority of the votes cast by the independent shareholders are in favour, in addition to a majority of the votes cast by all the shareholders being in favour.

Under the Listing Rules, if a resolution to elect or re-elect an independent nonexecutive director is not approved by a majority vote of both the shareholders as a whole and the independent shareholders, a further resolution may be put forward to be approved by the shareholders as a whole at a meeting which must be held more than 90 days after the date of the first vote but within 120 days of the first vote.

Accordingly, if any of Resolutions 5, 6, 8, 10, 12 and 13 is not approved by a majority vote of the Company's independent shareholders at the AGM, the relevant Director(s) will be treated as having been re-elected only for the period from the date of the AGM until the earlier of (i) the close of any general meeting of the Company, convened for a date more than 90 days after the AGM but within 120 days of the AGM, to propose a further resolution to re-elect him or her, (ii) the date which is 120 days after the AGM and (iii) the date of any announcement by the Board that it does not intend to hold a second vote. In the event that the Director's re-election is approved by a majority vote of all shareholders at a second meeting, the Director will then be re-elected until the next AGM.

The following information is provided in compliance with Listing Rule 13.8.17R (1) in relation to the Company's independent Directors who are seeking re-election at the AGM.

For the purposes of this section, a "Relevant Party" means each of Hochschild Mining PLC, the Directors of Hochschild Mining PLC, any controlling shareholder of Hochschild Mining PLC and any associate of a controlling shareholder of Hochschild Mining PLC (the italicised terms having the same meanings given to them in the Listing Rules of the Financial Conduct Authority).

Graham Birch

GB1. Details of any existing or previous relationship, transaction or arrangement with a Relevant Party

Mr Birch joined the Board in July 2011.

Until his retirement in 2009, Mr Birch served as a Director of Blackrock Commodities Investment Trust plc, and Manager of Blackrock's World Mining Trust and Gold and General Unit Trust. Blackrock, Inc. is one of Hochschild Mining PLC's largest shareholders with a holding of c.5%.

GB2. Reasons why Director is considered to be effective

Given Mr Birch's prior experience as a fund manager investing in the mining sector and as a Non-Executive Director of Sprott Inc., he provides insight into investors' perspectives with respect to the Company's corporate and financial strategies. In addition, his academic background in geology is a valuable resource for the Board in appraising the

The Board intends to adhere to the provisions in the Pre-emption Group's Statement of Principles and not to allot shares or other equity securities or sell treasury shares for cash on a non-preemptive basis pursuant to the authority in Resolution 17 in excess of an amount equal to 7.5 per cent of the total issued ordinary share capital of the Company, excluding treasury shares, within a rolling three-year period, other than:

• (i) with prior consultation with shareholders; or
• (ii) in connection with an acquisition or specified capital investment which is announced contemporaneously with the allotment or which has taken place in the preceding six-month period and is disclosed in the announcement of the allotment.

Non-pre-emptive offers – acquisitions and specified capital investments

The Pre-Emption Group's Statement of Principles also support the annual disapplication of pre-emption rights in respect of allotments of shares and other equity securities and sales of treasury shares for cash where these represent no more than an additional 5 per cent of issued ordinary share capital (exclusive of treasury shares), and are used only in connection with an acquisition or specified capital investment. The Pre-Emption Group's Statement of Principles defines "specified capital investment" as meaning one or more specific capital investment related uses for the proceeds of an issue of equity securities, in respect of which sufficient information regarding the effect of the transaction on the Company, the assets the subject of the transaction and (where appropriate) the profits attributable to them is made available to shareholders to enable them to reach an assessment of the potential return.

Accordingly, the purpose of Resolution 18 is to authorise the Directors to allot new shares and other equity securities pursuant to the allotment authority given by Resolution 16, or sell treasury shares, for cash up to a further nominal amount of £6,423,444, only in connection with an acquisition or specified capital investment which is announced contemporaneously with the allotment, or which has taken place in the preceding six-month period and is disclosed in the announcement of the issue. This amount is equivalent to 5 per cent of the total issued ordinary share capital of the Company as at 9 April 2021. If the authority given in Resolution 18 is used, the Company will publish details of its use in its next annual report. Resolution 18 has been drafted in line with the template resolutions published by the Pre-Emption Group in May 2016.

MR4. Process of Selection

Having been known to the Company since its IPO in 2006, Mr Rawlinson was invited to join the Board in light of his breadth of experience and knowledge of the sector.

Sanjay Sarma

SS1. Details of any existing or previous relationship, transaction or arrangement with a Relevant Party

Mr Sarma is a director and shareholder of Top Flight Technologies, a company in which Eduardo Hochschild has a 1.25% shareholding and a convertible note investment.

SS2. Reasons why Director is considered to be effective

Mr Sarma is a professor of Mechanical Engineering at the Massachusetts Institute of Technology and has a personal interest in innovation in the mining industry. The sector, in general, faces a number of long-term challenges and therefore Mr Sarma's knowledge of new technologies, applications for new economy metals including rare earths and innovative approaches to mining are considered to be of strategic importance to the Group. In keeping with the Company's usual approach, the board evaluation process undertaken in 2020 sought the opinion of Board members on the performance of their fellow Directors which concluded that Mr Sarma makes a significant and valued contribution to the Board and that his perspective and contributions add a new dimension to board discussions.

SS3. How the Director is considered to be independent

Taking all relevant factors into consideration and Mr Sarma's objective approach and contribution to Board discussions, the Directors concluded that Mr Sarma is independent of character and judgement, and that the circumstances described in SS1 above are not of sufficient materiality such that they are likely to affect, or could appear to affect, his judgement

SS4. Process of Selection

Having been known for his interest in the use of technology and innovation in mining, Mr Sarma was invited to join the Board.

Resolution 14 Re-appointment of auditors

The Company is required, at each general meeting at which accounts are presented, to appoint auditors to hold office until the next such meeting.

Following a recommendation from the Audit Committee, the Board recommends to shareholders the re-appointment of Ernst & Young LLP to hold office until the next meeting at which accounts are laid.

Explanatory Notes on Resolutions continued

Resolution 15

Remuneration of the auditors

Resolution 15 seeks shareholder consent for the Company's Audit Committee to set the remuneration of the Auditors.

Resolution 16

Authority to allot shares The purpose of Resolution 16 is to renew the Directors' power to allot shares.

The authority in paragraph 16.1 will allow the Directors to allot new shares and grant rights to subscribe for, or convert other securities into, shares up to a nominal value of £42,818,681 which is equivalent to approximately 33 per cent of the total issued ordinary share capital of the Company, exclusive of treasury shares, as at 9 April 2021.

The authority in paragraph 16.2 will allow the Directors to allot new shares and grant rights to subscribe for, or convert other securities into, shares only in connection with a rights issue up to a further nominal value of £42,818,681 which is equivalent to approximately 33 per cent of the total issued ordinary share capital of the Company, exclusive of treasury shares, as at 9 April 2021.

This is in line with corporate governance guidelines.

At 9 April 2021, the Company did not hold any shares in treasury.

There are no present plans to undertake a rights issue or to allot new shares. The Directors consider it desirable to have the maximum flexibility permitted by corporate governance guidelines to respond to market developments and to enable allotments to take place when considered appropriate. If the resolution is passed, the authority will expire on the earlier of 30 June 2022 and the end of the AGM in 2022.

Resolutions 17 and 18 Disapplication of pre-emption rights

If the Directors wish to allot new shares or other equity securities, or sell treasury shares, for cash (other than in connection with an employee share scheme), company law requires that these shares are offered first to shareholders in proportion to their existing holdings (known as pre-emption rights).

Pre-emptive offers

The purpose of paragraphs 17.1(i) and 17.2 of Resolution 17 is to authorise Directors to allot a limited number of ordinary shares or other equity securities, or sell treasury shares, for cash on a pre-emptive basis

but subject to such exclusions or arrangements as the Directors may deem appropriate to deal with certain legal, regulatory or practical difficulties. For example, in a pre-emptive rights issue, there may be difficulties in relation to fractional entitlements or the issue of new shares to certain shareholders, particularly those resident in certain overseas jurisdictions. The Board has no current intention of exercising the authority under paragraph 17.1 of Resolution 17 but considers the authority to be appropriate in order to allow the Company flexibility to finance business opportunities or to conduct a pre-emptive offer or pre-emptive rights issue having made appropriate exclusions or arrangements to address such difficulties.

Non-pre-emptive offers – general disapplication

In addition, there may be circumstances when the Directors consider it in the best interests of the Company to allot a limited number of ordinary shares or other equity securities, or sell treasury shares for cash on a non-pre-emptive basis. The Pre-Emption Group's Statement of Principles were last updated in March 2015. They support the annual disapplication of pre-emption rights in respect of allotments of shares and other equity securities and sales of treasury shares for cash where these represent no more than 5 per cent of the issued ordinary share capital (exclusive of treasury shares), without restriction as to the use of proceeds of those allotments.

Accordingly, the purpose of paragraph 17.1(ii) of Resolution 17 is to authorise Directors to allot new shares and other equity securities pursuant to the allotment authority given by paragraph 16.1 of Resolution 16, or sell treasury shares, for cash up to a nominal value of £6,423,444, without the shares first being offered to existing shareholders in proportion to their existing holdings.

This amount is equivalent to 5 per cent of the total issued ordinary share capital of the Company as at 9 April 2021.

The Board considers the authorities in Resolutions 17 and 18 to be appropriate in order to allow the Company flexibility to finance business opportunities or to conduct a pre-emptive offer or rights issue without the need to comply with the strict requirements of the statutory pre-emption provisions. The Board has no immediate plans to make use of these authorities. If the resolutions are passed, the authorities will expire on the earlier of 30 June 2022 and the end of the AGM in 2022.

Resolution 19

Authority to buy shares Under Section 701 of the 2006 Act ("Section 701") the directors of a company may make market purchases of that company's shares if authorised to do so by shareholders. The Directors believe that granting such approval would be in the best interests of shareholders in allowing them the flexibility to react promptly to circumstances requiring market purchases.

Accordingly, Resolution 19, which will be proposed as a special resolution, will, if passed, give the Directors authority to make one or more market purchases of the Company's shares under Section 701. The authority contained in this resolution will be limited to 51,387,556 Ordinary Shares having an aggregate nominal value of £12,846,889 which represents 10 per cent of the issued ordinary share capital of the Company as at 9 April 2021. The upper and lower limits on the price which may be paid for those shares are set out in the resolution itself.

Pursuant to the 2006 Act, shares purchased under this authority may be held as treasury shares. The Company may purchase and hold shares as treasury shares up to a maximum amount equal to 15 per cent of the nominal value of the issued Ordinary Shares at that time, rather than cancelling them. Shares held in treasury do not carry voting rights and no dividends will be paid on any such shares. Shares held in treasury in this way can be sold for cash or cancelled, either immediately or at a point in the future, or be used for the purposes of an employee share scheme. This would allow the Company to manage its capital base more effectively.

The Board has no present intention of exercising this authority. Shares will only be repurchased if the Directors consider such purchases to be in the best interests of shareholders generally and that they can be expected to result in an increase in earnings per share. The authority will only be used after careful consideration, taking into account market conditions prevailing at the time, other investment opportunities, appropriate gearing levels

and the overall financial position of the Company. Shares held as treasury shares will not automatically be cancelled and will not be taken into account in future calculations of earnings per share (unless they are subsequently resold or transferred out of treasury).

This authority will expire on the earlier of 30 June 2022 and the Company's AGM in 2022.

Resolution 20

New Articles of Association

Resolution 20 is being proposed to adopt new Articles of Association in order to update the Company's existing Articles of Association, which were last amended in 2010, in light of (among other things) developments in market practice and technological advancements regarding shareholder accessibility that will enable shareholders to participate in meetings by electronic means.

The principal changes to the Company's existing Articles of Association that are introduced by the new Articles of Association are summarised in the appendix to this document on page 12. Other changes which are of a minor, technical or clarifying nature have not been noted. A copy of the Company's existing Articles of Association marked up to show the proposed changes that are introduced by the new Articles of Association will also be made available on the Company website at http://www. hochschildmining.com/en/investors/ shareholder_information/agm__egm_ information.

Resolution 21 General meetings

This resolution is proposed in the light of the implementation of the Shareholder Rights Directive in August 2009. The regulations implementing this Directive increased the notice period for general meetings of the Company to 21 days unless shareholders have approved the calling of meetings on 14 days' notice.

AGMs will continue to be held on at least 21 clear days' notice. This resolution seeks to renew the authority granted at last year's AGM.

The shorter notice period would not be used as a matter of routine for such meetings, but only where the flexibility is merited by the business of the meeting and is thought to be to the advantage of shareholders as a whole.

Appendix – Summary of Proposed Changes to the Company's Articles of Association

The outline below is intended to be a readable summary of the principal changes to the Company's existing Articles of Association (the "Existing Articles") introduced by the proposed new Articles of Association of the Company (the "New Articles"). Changes that are of a minor, technical or clarifying nature, or that are incidental to these principal changes, have not been noted in this Appendix.

As certain provisions of the Existing Articles have been deleted and new provisions inserted, the New Articles are renumbered accordingly. The New Articles showing all the changes to the Existing Articles are available for inspection, as described in the notes to the Notice of AGM.

A copy of the Existing Articles marked up to show the proposed changes that are introduced by the New Articles can be viewed at http://www.hochschildmining.com/en/investors/shareholder_ information/agm__egm_information.

Additional provisions to enable the holding of combined physical and electronic general meetings

To make it easier for shareholders (including those based overseas) to take part in future general meetings, provisions have been included in the New Articles to allow the Company the flexibility to hold combined physical and electronic general meetings ('hybrid' meetings). This is achieved by providing the Company with the ability to hold an electronic general meeting in parallel with the physical general meeting, allowing shareholders to attend and participate either in person or virtually by electronic means. In line with the views expressed by various investor bodies, the Board recognises the value and importance of shareholders being able to attend meetings in person and, accordingly, the proposed changes do not permit "virtual-only" meetings where there is no physical meeting.

The primary changes in the New Articles to enable the holding of 'hybrid meetings' are contained in two new provisions at Articles 54 and 55 of the New Articles, although a number of other consequential amendments have been made to the New Articles.

Provisions to allow for postponement or cancellation of general meetings

It is proposed to update the Existing Articles in line with recent market practice to allow the Board to postpone or cancel a general meeting before the time at which it is to be held if it considers that it is impractical or unreasonable for any reason to hold the relevant general meeting. Given recent Covid-19 related disruptions to meetings, the Board believes that having increased flexibility to adapt to changing circumstances at short notice is in the best interests of the Company and avoids the additional administrative burden and cost of having to technically open a general meeting in order to postpone and/or cancel the relevant meeting. The primary change is contained in a new provision at Article 44 of the New Articles.

Distributions in specie

The Existing Articles authorise the Company, subject to approval by shareholders, to effect a dividend in whole or in part through a distribution of specific assets (including shares in a subsidiary), i.e. a distribution "in kind" (also known as an in specie distribution). The proposed changes at Article 107 of the New Articles expressly confirm that the Company may implement potential future transactions through a distribution in kind by procuring the receipt by shareholders of specific assets from an entity other than the Company itself. The proposed changes under the New Articles will provide the Group with greater flexibility going forward.

Articles that duplicate statutory provisions

The Company is also taking the opportunity to remove certain provisions from the Existing Articles which replicate provisions contained in the UK Companies Act 2006 and/or are otherwise redundant in order to simplify the Company's articles of association and align them more closely with current market practice. The primary changes are the deletion of the provisions contained in Articles 3, 5 and 7 of the Existing Articles.

Shareholder information

Proxy voting

Given the restrictions currently in place, shareholders are requested to submit their vote by proxy.

If requesting a hard copy proxy form, please complete, sign and return the form as soon as possible in accordance with the instructions printed on it. The proxy form should be returned to Link Group as soon as possible, but in any event by no later than 2.30pm on Tuesday 25th May 2021. Alternatively, you may submit your proxy online at www.signalshares.com. CREST members wishing to use the CREST electronic appointment service are referred to note 5 of the Notice of AGM on page 6.

Completion and return of the Proxy Vote do not, in the usual course, prevent shareholders from attending in person and voting at the meeting should they subsequently decide to do so; however, restrictions currently put in place by the UK Government to prevent the spread of Coronavirus (Covid-19) mean that shareholders should not attend the AGM.

Shareholder enquiries

The Company's share register is maintained by:

Link Group 10th Floor Central Square 29 Wellington Street Leeds LS1 4DL

Email: shareholderenquiries@linkgroup.co.uk Telephone: (+44 (0)) 371 664 0300

(Calls are charged at the standard geographic rate and will vary by provider. Calls outside the United Kingdom will be charged at the applicable international rate. Lines are open between 9am – 5:30pm, Monday to Friday excluding public holidays in England and Wales).

Enquiries relating to the administration of holdings of the Company's shares, such as change of address, change of ownership or dividend payments, should be directed to Link Group at the address and telephone number above.

Any queries from shareholders in Peru can also be addressed to:

José Augusto Palma, VP, Legal & Corporate Affairs Compañía Minera Ares SAC Calle La Colonia No.180 Urb. El Vivero Santiago de Surco, Lima

Telephone: +511 317 2000