HOCHSCHILD MINING PLC — AGM Information 2021

Apr 22, 2021

Dear

HOCHSCHILD MINING PLC (the "COMPANY") 2020 ANNUAL REPORT AND NOTICE OF 2021 ANNUAL GENERAL MEETING ("AGM")

Please accept this letter as notification that the Company's Annual Report for the year ended 31 December 2020 and the Notice of the 2021 AGM have now been published on the Company's website at www.hochschildmining.com and are enclosed for shareholders who elected to receive hard copies.

The AGM will be held at 2.30pm on Thursday, 27 May 2021 at 17 Cavendish Square, London W1G OPH.

Impact of COVID-19 on AGM Arrangements

At the time of writing, legislation and government guidance relating to Covid-19 prohibits public gatherings and restricts non-essential travel. In light of the government's announced Covid roadmap, it appears highly unlikely that shareholders will be legally able to physically attend the AGM.

The health of all concerned is paramount and therefore 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. Full details on how to submit proxy votes and the deadline to do so can be found on page 6 of the Notice of AGM.

The Board regrets not being able to meet with shareholders and so, to facilitate engagement, shareholders are invited to submit questions they may have in relation to any of the items of proposed business at the AGM by email and to participate in a call that has been arranged to take place immediately after the AGM. Shareholders wishing to participate on the call should register their attendance as detailed on page 7 of the Notice of AGM.

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.

This letter does not contain the full details of the resolutions under consideration at the AGM, and these are contained in the Notice of the meeting and should be read before you complete your vote. The Directors consider that the proposed resolutions contained in the Notice of AGM are in the best interests of the Company and shareholders as a whole and unanimously recommend that you vote in favour of them, as they intend to do in respect of their own shareholdings.

Proxy voting

You will not receive a hard copy form of proxy for the 2021 AGM in the post. Instead, you will be able to vote electronically using the link www.signalshares.com. You will need to log in to your Signal Shares account, or register if you have not previously done so. To register, you will need your Investor Code which is detailed on your share certificate or available from our Registrar, Link Group.

Subject to the prevailing restrictions, voting by proxy prior to the AGM does not affect your right to attend the AGM and vote in person should you so wish. Proxy votes must be received no later than 2.30pm on Tuesday 25 May 2021.

If you need help with voting online, please contact our Registrar, Link Group, on 0371 664 0391. 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 by email at shareholderenquiries@linkgroup.co.uk

Thank you for your continued support.

Yours sincerely

Raj Bhasin Company Secretary

Hochschild Mining PLC

17 Cavendish Square London W1G 0PH United Kingdom +44 (0) 20 3709 3260 www.hocplc.com

Hochschild Mining PLC (incorporated and registered in England and Wales No. 05777693) Registered office as above

(Continued overleaf)

Additional shareholder information

Arrange to have your dividends paid direct into your bank account

This is more secure and it reduces delays as the dividend reaches your bank account on the payment date.

If you have a UK bank account you can sign up for this service on the Signal shares website (by clicking on 'your dividend options' and following the on-screen instructions).

Shareholder Communications

The majority of shareholders choose to receive Annual Reports and Notices of meetings electronically. This has a number of advantages for the Company and its shareholders. It increases the speed of communication, saves you time and reduces print and distribution costs and our impact on the environment.

Company law requires that the Company asks shareholders to consent to the receipt of communications electronically and via a website*. Please note that if you consent to website publication you will continue to be notified in writing and through the release of an announcement on the London Stock Exchange each time the Company places a statutory communication on the website. Annual Reports and other documents which are required to be sent to shareholders ("Shareholder Information") are published on our website at www.hochschildmining.com. If you consent, the website will be the way in which you access all future Shareholder Information.

Please note that you still have the right to request hard copies of Shareholder Information at no charge.

• · If you would like to receive notifications by email, you can register your email address via the Share Portal www.signalshares.com or write to FREEPOST SAS, 29 Wellington Street, Leeds LS1 4DL (no stamp or further address detail is required. Please write in BLOCK CAPITALS)
• · If you would like to receive Shareholder Information by means of a website, there is nothing more you need to do. You will be notified by post when Shareholder Information has been placed on the Company's website.
• · If you would like to receive Shareholder Information in hard copy form, you can register your request via the Share Portal www.signalshares.com or write to FREEPOST SAS, 29 Wellington Street, Leeds LS1 4DL (no stamp or further address detail is required. Please write in BLOCK CAPITALS)

Please note that if you hold your shares corporately or in a CREST account, you are not able to use the Share Portal to inform us of your preferred method of communication and should instead write to FREEPOST SAS, 29 Wellington Street, Leeds LS1 4DL (no stamp or further address detail is required. Please write in BLOCK CAPITALS).

If we do not receive a reply from you within 28 days of the date of dispatch of this letter, you will be deemed to have consented to website publication of shareholder information and you will not receive hard copies of Shareholder Information in the post.

*The Company reserves the right to send hard copy documents to shareholders where, for example, overseas securities laws do not permit electronic communication or in other circumstances where the Company considers that electronic delivery may not be appropriate.

Hochschild Mining PLC 17 Cavendish Square London W1G 0PH United Kingdom +44 (0) 20 3709 3260 www.hocplc.com

Hochschild Mining PLC (incorporated and registered in England and Wales No. 05777693) Registered office as above