Morgan Advanced Materials PLC

Proxy Solicitation & Information Statement • Mar 27, 2025

Form of Proxy

Shareholder Reference Number ("SRN"):

Please read the accompanying notes carefully before completing this form.

Proxy's name

No. of shares

Do not enter your own name. Leave blank if you wish to appoint the Chair.

I/ We being an ordinary shareholder of Morgan Advanced Materials plc hereby appoint the Chair of the meeting, or the above-named person as my/our proxy to exercise on my/our behalf all or any of my/our rights to attend, speak and vote in respect of my/our voting entitlements at the Annual General Meeting ("AGM") of Morgan Advanced Materials plc to be held at York House, Sheet Street, Windsor, Berkshire SL4 1DD at 10.30am on Thursday 8 May 2025, and at any adjournment thereof.

Please tick here if this proxy appointment is one of multiple appointments being made.

I/ We would like my/our proxy to vote on the resolutions proposed at the AGM as indicated on this form. Unless otherwise instructed the proxy may vote as he or she sees fit or abstain in relation to any business of the meeting or adjourned meeting.

Date

Signature

In the case of a corporation, this appointment must be made under its common seal or be signed on its behalf by an attorney or duly authorised signatory.

Please complete this form and return it to the Registrar, to arrive no later than 10.30am on Tuesday 6 May 2025.

Alternatively, you may submit your proxy electronically at shareview.co.uk.

© 2020 Friend Studio Ltd File name: MAM_AR24_Proxy_A5_250320 Modification Date: 20 March 2025 5:33 pm

Please indicate how you wish to cast your vote by placing a cross in ink in the relevant box below.

Resolutions

• 1. To receive the annual report & accounts for the year ended 31 December 2024
• 1. To approve the Directors' Remuneration Policy
• 1. To approve the Directors' Remuneration Report
• 1. To declare a final dividend
• 1. To re-elect Jane Aikman as a Director
• 1. To re-elect Richard Armitage as a Director
• 1. To re-elect Ian Marchant as a Director
• 1. To re-elect Pete Raby as a Director
• 1. To re-elect Clement Woon as a Director
• 1. To elect Damien Caby as a Director
• 1. To elect Alison Wood as a Director
• 1. To re-appoint Deloitte LLP as Auditor
• 1. To authorise the Audit Committee to determine the Auditor's remuneration
• 1. To authorise political donations
• 1. To authorise the allotment of shares
• 1. To disapply pre-emption rights
• 1. To further disapply pre-emption rights for investment purposes
• 1. To authorise market purchases of own shares
• 1. To permit the holding of general meetings on not less than 14 clear days' notice

Vote

For	Against	withheld

Explanatory notes

See also the explanatory notes in the Notice of Meeting

• 1. Every shareholder may appoint some other person, who need not be a shareholder, as his or her proxy to exercise all or any of her or his rights to attend, speak and vote at the meeting electronically or in person. If you wish to appoint a person other than the Chair, please insert the name of your chosen proxy in the space provided. If the proxy is being appointed in respect of less than your full voting entitlement please enter in the separate box provided the number of shares in relation to which the proxy appointment applies.
• 1. To appoint more than one proxy you may photocopy this form or additional forms may be obtained by contacting the Registrar, Equiniti, on +44 (0) 371 384 2412, between 8.30am and 5.30pm, UK time, from Monday to Friday (excluding public holidays in England and Wales). Please indicate the number of shares in respect of which each proxy is authorised to act in the box on each form and tick the box provided to indicate multiple appointments. All forms must be signed and should be returned together.
• 1. The form of proxy and power of attorney or other authority, if any, under which it is signed or a notarially certified or office copy of such power or authority must be received by the Company's Registrar, Equiniti, Aspect House, Spencer Road, Lancing, West Sussex, BN99 8FD not later than 48 hours before the time appointed for the meeting.
• 1. Alternatively, you can register your proxy appointment and voting instructions by going to Equiniti's Shareview website, shareview.co.uk, and logging in to your Shareview Portfolio. To register for a Shareview Portfolio, go to shareview.co.uk and enter the requested information. Full details of the procedures are given on the website.
• 1. The completion and return of this form will not preclude a shareholder from attending the meeting and voting in person.

© 2020 Friend Studio Ltd File name: MAM_AR24_Proxy_A5_250320 Modification Date: 20 March 2025 5:33 pm

• 1. The 'vote withheld' option is provided to enable you to abstain on any particular resolution. Note that a vote withheld is not a vote in law and will not be counted in the proportion of votes for or against a resolution.
• 1. Entitlement to attend and vote at the meeting and the number of votes which may be cast will be determined by reference to the Register of Members as at the close of business on Tuesday 6 May 2025 or two days before any adjourned meeting. Changes to the Register of Members after that time will be disregarded.
• 1. To appoint one or more proxies or to instruct a proxy via the CREST system, CREST messages must be received by the issuer's agent (ID number RA19) no later than 10.30am on Tuesday 6 May 2025, that is 48 hours before the time of the meeting. For this purpose the time of receipt will be taken to be the time, as determined by the CREST system timestamp, from which the issuer's agent is able to retrieve the message. The Company may treat as invalid a proxy appointment sent by CREST in the circumstances set out in Regulation 3S(5)(a) of the Uncertificated Securities Regulation 2001.
• 1. If the address information given overleaf is incorrect please visit Equiniti's website at www.shareview.co.uk, or write to Equiniti, Aspect House, Spencer Road, Lancing, BN99 6DA.
• 1. You may return your form in a sealed envelope if you prefer, addressed to FREEPOST RTAK-RLTY-REUA, Equiniti, Aspect House, Spencer Road, Lancing, BN99 8FD.
• 1. Electronic addresses given in this form and the Notice of Meeting may not be used to communicate for any purposes other than those expressly stated.