Glanbia Regulatory News (GLB)

NOTIFICATION OF MAJOR HOLDINGS (to be sent to the relevant issuer and to the Central Bank of Ireland and to the FCA)i

1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached:i

Glanbia plc, an Irish incorporated company with shares listed on Euronext Dublin and the Main Market of the London Stock Exchange.

2. Reason for the notification (please tick the appropriate box or boxes):

[X ] An acquisition or disposal of voting rights

[ ] An acquisition or disposal of financial instruments

[ ] An event changing the breakdown of voting rights

[ ] Other (please specify):

3. Details of person subject to the notification obligation:

Name:

Southeastern Asset Management, Inc.

City and country of registered office (if applicable):

Southeastern Asset Management, Inc. (U.S.)6410 Poplar Avenue, Suite 900Memphis, TN 38119USA

4. Full name of shareholder(s) (if different from 3.):

Euroclear Nominees Limited

5. Date on which the threshold was crossed or reached:

20 January 2022

6. Date on which issuer notified:

24 January 2022

7. Threshold(s) that is/are crossed or reached:

3%

8. Total positions of person(s) subject to the notification obligation:

% of voting rights attached to shares (total of 9.A)

% of voting rights through financial instruments(total of 9.B.1 + 9.B.2)

Total of both in % (9.A + 9.B)

Total number of voting rights of issuer

Resulting situation on the date on which threshold was crossed or reached

3.74%

N/A

3.74%

287,169,345

Position of previous notification (if applicable)

N/A

N/A

N/A

9. Notified details of the resulting situation on the date on which the threshold was crossed or reached:

A: Voting rights attached to shares

Class/type ofshares

ISIN code (if possible)

Number of voting rights

% of voting rights

Direct

Indirect

Direct

Indirect

IE0000669501

10,731,019

N/A

3.74%

N/A

SUBTOTAL A

10,731,019

3.74%

B 1: Financial Instruments according to Regulation 17(1)(a) of the Regulations

Type of financial instrument

Expirationdate

Exercise/Conversion Period

Number of voting rights that may be acquired if the instrument is exercised/converted.

% of voting rights

N/A

N/A

N/A

N/A

N/A

SUBTOTAL B.1

N/A

N/A

B 2: Financial Instruments with similar economic effect according to Regulation 17(1)(b) of the Regulations

Type of financial instrument

Expirationdate

Exercise/Conversion Period

Physical or cash settlement

Number of voting rights

% of voting rights

N/A

N/A

N/A

N/A

N/A

N/A

SUBTOTAL B.2

N/A

10. Information in relation to the person subject to the notification obligation (please tick the applicable box):

[ ] Person subject to the notification obligation is not controlled by any natural person or legal entity and does not control any other undertaking(s) holding directly or indirectly an interest in the (underlying) issuer.

[ X] Full chain of controlled undertakings through which the voting rights and/or thefinancial instruments are effectively held starting with the ultimate controlling natural person or legal entity:

Name

% of voting rights if it equals or is higher than the notifiable threshold

% of voting rights through financial instruments if it equals or is higher than the notifiable threshold

Total of both if it equals or is higher than the notifiable threshold

Mr Otis Mason Hawkins

Southeastern Asset Management, Inc.

11. In case of proxy voting: [name of the proxy holder] will cease to hold [% and number] voting rights as of [date]

N/A

12. Additional information:

Done at Dublin on 24 January 2022.