Glanbia Plc — Proxy Solicitation & Information Statement 2026

Mar 25, 2026

Glanbia

Attendance Card

Please bring this card with you to the meeting and present it at shareholder registration/accreditation.

Glanbia plc (the "Company") invites you to attend the Annual General Meeting ("AGM") of the Company to be held at Killashee Hotel, Killashee, Naas, Co. Kildare, W91 DC98, Ireland at 11.00 a.m. (Irish time) on Wednesday 29 April 2026.

Shareholder Reference Number

Form of Proxy - Annual General Meeting ("AGM") to be held on Wednesday 29 April 2026

Cast your Proxy online...It's fast, easy and secure! www.eproxyappointment.com

You will be asked to enter the Control Number, Shareholder Reference Number (SRN) and PIN shown opposite and agree to certain terms and conditions.

Control Number: 921169

SRN:

PIN:

To view the notice and related documents online log on to: www.glanbia.com/agm

To be effective, all proxy appointments must be lodged with the Company's Registrar at: Computershare Investor Services (Ireland) Limited, 3100 Lake Drive, Citywest Business Campus, Dublin 24, D24 AK82 or through www.eproxyappointment.com by 11.00 a.m. (Irish time) on 27 April 2026 (or in the case of an adjournment 48 hours before the time of the adjourned meeting). Detailed instructions on voting and any updates or announcements regarding the AGM may be accessed on www.glanbia.com/agm.

Explanatory Notes:

1. Every shareholder has the right to appoint some other person(s) of their choice, who need not be a shareholder as his/her proxy to exercise all or any of his/her rights, to attend, speak, ask questions and vote on his/her behalf at the meeting. If you wish to appoint a person other than the Chair of the meeting, please insert the name of your chosen proxy holder in the space provided (see reverse).
2. A shareholder may appoint more than one proxy to attend, speak, ask questions and vote at the meeting provided each proxy is appointed to exercise rights attached to different shares held by that shareholder. To appoint more than one proxy, an additional proxy form(s) may be obtained by contacting the Registrar's helpline on +352 1 247 5349 or you may photocopy this form. Please indicate in the box next to the proxy holder's name (see reverse) the number of shares in relation to which they are authorised to act as your proxy. Please also indicate by ticking the box provided if the proxy instruction is one of multiple instructions being given. If the proxy is being appointed in relation to less than your full voting entitlement, please enter in the box next to the proxy holder's name (see reverse) the number of shares in relation to which they are authorised to act as your proxy. If left blank your proxy will be deemed to be authorised in respect of your full voting entitlement (or if this proxy form has been issued in respect of a designated account for a shareholder, the full voting entitlement for that designated account). All forms must be signed and should be returned together in the same envelope. Where a poll is taken at the AGM, a shareholder, present in person or proxy holding more than one share is not required to cast all their votes in the same way.
3. To be effective, the completed Form of Proxy together with any power of attorney or other authority under which it is executed, or a notarially certified copy thereof, must be deposited with the Registrar of the Company before the deadline set out above. A shareholder wishing to appoint a proxy by electronic means may do so on www.eproxyappointment.com. Details of the requirements are set out in the box above. A shareholder who wishes to appoint more than one proxy by electronic means must contact the Registrar by sending an email to clientservices@computershare.ie.
4. The 'Vote Withheld' option overleaf is provided to enable you to abstain on any particular resolution.

However, it should be noted that a 'Vote Withheld' is not a vote in law and will not be counted in the calculation of the proportion of the votes 'For' and 'Against' a resolution.

1. Pursuant to Sections 1087G and 1105 of the Companies Act 2014, only those shareholders registered in the register of members of the Company as at close of business on 25 April 2026 (or in the case of an adjournment as at close of business on the day which is four days before the holding of the adjourned meeting) shall be entitled to attend the AGM or to attend, speak, ask questions and vote at the meeting in respect of the number of shares registered in their names at that time. Changes to entries on the Register of Members after that time shall be disregarded in determining the rights of any person to attend and vote at the meeting.
2. Persons who hold their interests in ordinary shares as Belgian law rights through the Euroclear Bank system or as Crest Depository Interests should refer to the notes to the Notice of Annual General Meeting and to the Glanbia website www.glanbia.com/agm.
3. The above is how your address appears on the Register of Members. If this information is incorrect please ring the Registrar's helpline on +353 1 247 5349 to request a change of address form or go to www.investorcentre.com/ie to use the online Investor Centre service.
4. Any alterations made to this form should be initialled.
5. The appointment of a proxy will not preclude a member from attending the meeting and voting in person.

Kindly Note: This form is issued only to the addressee(s) and is specific to the unique designated account printed hereon. This personalised form is not transferable between different (i) account holders; or (ii) uniquely designated accounts. The Company and Computershare Investor Services (Ireland) Limited accept no liability for any instruction that does not comply with these conditions. The privacy and security of your personal data is taken very seriously and at all times Computershare and Glanbia plc will comply with the prevailing laws and regulations governing confidentiality, data protection and security of information. For more information on how your personal data is processed and your privacy rights, a privacy notice is available on Glanbia's website, www.glanbia.com.

All Holders

101060 301

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Poll Card To be completed only at the Annual General Meeting when the Poll is called.

Ordinary Business	For	Against	Withheld
1. To review the Company's affairs and receive and consider the Financial Statements for the year ended 3 January 2026 together with the reports of the Directors and the Auditor thereon.	☐	☐	☐
2. To declare a final dividend of 25.67€ cent per share on the ordinary shares for the year ended 3 January 2026.	☐	☐	☐
3. By separate resolutions, to elect or re-elect the following Directors who, in accordance with the provisions of the Irish Corporate Governance Code, retire and, being eligible, offer themselves for election or re-election:
(a) Paul Duffy	☐	☐	☐
(b) Hugh McGuire	☐	☐	☐
(c) Mark Garvey	☐	☐	☐
(d) Róisín Brennan	☐	☐	☐
(e) William Carroll	☐	☐	☐
(f) Ilona Haajier	☐	☐	☐
(g) Jane Lodge	☐	☐	☐
(h) John G Murphy	☐	☐	☐
(i) Senan Murphy	☐	☐	☐
(j) Gabriella Parisse	☐	☐	☐
(k) Kimberly Underhill	☐	☐	☐
4. To consider the appointment of EY as Auditor of the Company.	☐	☐	☐
Signature	For	Against	Withheld
---	---	---	---
5. To authorise the Directors to fix the remuneration of the Auditor for the 2026 financial year.	☐	☐	☐
6. To receive and consider the Directors' Remuneration Report for the year ended 3 January 2026 (excluding the part containing the 2024-2026 Directors' Remuneration Policy) which is set out on pages 104 - 123 of the Annual Report.	☐	☐	☐
7. Special Resolution: Approval to call an Extraordinary General Meeting on 14 days' notice.	☐	☐	☐
Special Business	☐	☐	☐
8. Ordinary Resolution: Authorisation to allot relevant securities.	☐	☐	☐
9. Special Resolution: Routine dis-application of pre-emption rights.	☐	☐	☐
10. Special Resolution: Dis-application of pre-emption rights for an additional 10% for specific transactions.	☐	☐	☐
11. Special Resolution: Authorisation of market purchases of the Company's own shares.	☐	☐	☐
12. Special Resolution: Determination of the price range for the re-issue of treasury shares off-market.	☐	☐	☐
13. Special Resolution: Authority to make off-market purchase of shares from Tirlán Co-operative Society Limited.	☐	☐	☐

Form of Proxy

Please use a black pen. Mark with an X inside the box as shown in this example. ☑ You can also indicate your proxy not to vote on a resolution by inserting an 'X' in the vote withheld box. The appointment of a proxy will not preclude a member from attending the meeting and voting in person.

I/We hereby appoint the Chair of the Meeting OR the following person

Please leave this box blank if you have selected the Chair. Do not insert your own name(s). If you are appointing the proxy in relation to less than your full voting entitlement, please insert the number of shares in relation to which they are authorised to act.

as my/our proxy to attend, speak and vote in respect of my/our full voting entitlement on my/our behalf on any matter at the Annual General Meeting of Glanbia plc to be held at Killashee Hotel, Killashee, Naas, Co. Kildare, W91 DC98, Ireland at 11.00 a.m. (Irish time) on Wednesday 29 April 2026, and at any adjournment thereof. I/We direct that my/our vote(s) be cast on the specified resolutions as indicated by an X in the appropriate box.

*For the appointment of more than one proxy, please refer to Explanatory Note 2 (see front).

☐ Please tick here to indicate that this proxy appointment is one of multiple appointments being made.

Ordinary Business	For	Against	Withheld
1. To review the Company's affairs and receive and consider the Financial Statements for the year ended 3 January 2026 together with the reports of the Directors and the Auditor thereon.	☐	☐	☐
2. To declare a final dividend of 25.67€ cent per share on the ordinary shares for the year ended 3 January 2026.	☐	☐	☐
3. By separate resolutions, to elect or re-elect the following Directors who, in accordance with the provisions of the Irish Corporate Governance Code, retire and, being eligible, offer themselves for election or re-election:
(a) Paul Duffy	☐	☐	☐
(b) Hugh McGuire	☐	☐	☐
(c) Mark Garvey	☐	☐	☐
(d) Róisín Brennan	☐	☐	☐
(e) William Carroll	☐	☐	☐
(f) Ilona Haajier	☐	☐	☐
(g) Jane Lodge	☐	☐	☐
(h) John G Murphy	☐	☐	☐
(i) Senan Murphy	☐	☐	☐
(j) Gabriella Parisse	☐	☐	☐
(k) Kimberly Underhill	☐	☐	☐
Signature	For	Against	Withheld
---	---	---	---
4. To consider the appointment of EY as Auditor of the Company.	☐	☐	☐
5. To authorise the Directors to fix the remuneration of the Auditor for the 2026 financial year.	☐	☐	☐
6. To receive and consider the Directors' Remuneration Report for the year ended 3 January 2026 (excluding the part containing the 2024-2026 Directors' Remuneration Policy) which is set out on pages 104 - 123 of the Annual Report.	☐	☐	☐
7. Special Resolution: Approval to call an Extraordinary General Meeting on 14 days' notice.	☐	☐	☐
Special Business	☐	☐	☐
8. Ordinary Resolution: Authorisation to allot relevant securities.	☐	☐	☐
9. Special Resolution: Routine dis-application of pre-emption rights.	☐	☐	☐
10. Special Resolution: Dis-application of pre-emption rights for an additional 10% for specific transactions.	☐	☐	☐
11. Special Resolution: Authorisation of market purchases of the Company's own shares.	☐	☐	☐
12. Special Resolution: Determination of the price range for the re-issue of treasury shares off-market.	☐	☐	☐
13. Special Resolution: Authority to make off-market purchase of shares from Tirlán Co-operative Society Limited.	☐	☐	☐

I/We direct my/our proxy to vote on the resolutions proposed at the Meeting as indicated on this form.

Where no instruction appears above as to how the proxy should vote the proxy may vote as he or she sees fit or abstain in relation to any business of the meeting.

Signature

[Signature line with handwritten signature]

Date

DD / MM / YY

In the case of a body corporate, this proxy must be given under its common seal or be signed on its behalf by an attorney or officer duly authorised, stating their capacity (e.g. director, secretary).

CCS3009 09
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