CMC Markets : Notice of Availability

THIS DOCUMENT IS IMPORTANT AND REQUIRES YOUR IMMEDIATE ATTENTION.

This letter has been provided to you as a shareholder registered to receive such notifications. If you have sold or otherwise transferred all your shares in the Company, please forward this letter to the purchaser or transferee, or to the person who arranged the sale or transfer, so they can pass this letter to the person who now holds the shares. If you are in any doubt as to the action you should take, you should seek your own advice from your stockbroker, solicitor, accountant or other independent adviser authorised under the Financial Services and Markets Act 2000. This letter should not be regarded as a substitute for reading the shareholder documents or relied on as the basis upon which to make decisions. It is recommended that you read the shareholder documents carefully before taking any action.

CMC Markets plc ("CMC Markets" or the "Company")

(incorporated in England and Wales under the Companies Act 1985 with registered number 05145017)

Notice of availability

Annual Report and Financial Statements 2024 and Notice of Annual General Meeting 2024

24 June 2024

Dear shareholder,

Please accept this letter as notification that the CMC Markets plc Notice of Annual General Meeting 2024 and Annual Report and Financial Statements for the year ended 31 March 2024 have now been published on the Company's website www.cmcmarkets.com/group and may be accessed at www.cmcmarkets.com/group/ investors/shareholder-information and www.cmcmarkets.com/group/investors/results-reports-and-presentations respectively. To access these documents, you will need to have Adobe Acrobat Reader installed.

The Company's Annual General Meeting ("AGM" or the "Meeting") will be held at 10.00 a.m. on Thursday 25 July 2024 at 133 Houndsditch, London EC3A 7BX.

Shareholders who are unable to attend the AGM may submit questions relating to the business of the Meeting in advance of the AGM via email to CMCAGMQs@ cmcmarkets.com by no later than 10.00 a.m. (UK time) on Monday 22 July 2024. Responses to any such questions, if appropriate and relevant to the business of the AGM, will be posted for general view at www.cmcmarkets.com/group/investors/shareholder-information.

We will also be making arrangements to ensure that the Meeting can be observed via a live webcast. Shareholders will not be able to vote on the resolutions being proposed via these facilities and therefore it is important that shareholders do still cast their votes and submit a proxy appointment in accordance with the recommendation and instructions set out on page 5 of the Notice of AGM.

We would like to take this opportunity to thank you for agreeing to receive shareholder documents via our website rather than in paper form. By viewing documents in this way you are helping the Company to meet its sustainability objectives, cut production and distribution costs and minimise unnecessary paper usage.

If you are unable to locate any of the documents on the webpage or need help with voting, please email [e-mail] or telephone the Link Group shareholder helpline on [phone] (calls to Link Group are charged at the standard geographic rate and will vary by provider. Lines are open from

9.00 a.m. to 5.30 p.m. Monday to Friday, excluding public holidays in England and Wales. Calls from outside the United Kingdom will be charged at the applicable international rate).

Proxies

Whether or not you are able to attend the AGM in person, please send us your vote by completing and submitting your form of proxy online through the website of our registrar, Link Group, at www.cmcmarketsshares.co.uk to be received at least 48 hours before the time of the Meeting. A shareholder may request a paper copy form of proxy directly from Link Group by telephone on [phone].

If you are an institutional investor you may also be able to appoint a proxy electronically via the Proxymity platform, a process which has been agreed by the Company and approved by the registrar. For further information regarding Proxymity, please go to www.proxymity.io. Your proxy must be lodged by 10:00 a.m. on 23 July 2024 in order to be considered valid or, if the meeting is adjourned, by the time which is 48 hours before the time of the adjourned meeting. 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. An electronic proxy appointment via the Proxymity platform may be revoked completely by sending an authenticated message via the platform instructing the removal of your proxy vote.

If you are a CREST member, you should contact your CREST Service Provider, which will be able to help you to vote via the CREST system.

Yours sincerely,

James Richards

Chairman