Cairn Homes Plc: Holding(s) in Company

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

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

Cairn Homes plc

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

[ ] An acquisition or disposal of voting rights

[ ] An acquisition or disposal of financial instruments

[ ] An event changing the breakdown of voting rights

[ x] Other (please specify)iii:

Due to an external in-specie transfer on 10 September 2025

3. Details of person subject to the notification obligationiv :

Name: Aberdeen Group plc

City and country of registered office (if applicable): Edinburgh, Scotland

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

5. Date on which the threshold was crossed or reachedvi: 10/09/2025

6. Date on which issuer notified: 11/09/2025

7. Threshold(s) that is/are crossed or reached: 5%

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 issuervii

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

5.48

0.00

5.48

625,576,122

Position of previous notification (if applicable)

5.99

0.00

5.99

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.xiii

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

Namexv

% 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

Aberdeen Group plc

abrdn Investments (Holdings) Limited

abrdn Investment Management Limited

Aberdeen Group plc

abrdn Holdings Limited

abrdn Investments Limited

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

12. Additional informationxvi:

In reference to Section 10, the shares detailed are managed by the named discretionary investment management entity within multiple portfolios on behalf of underlying clients, based on investment management agreements whereby the client has delegated the exercise of the voting power to the referenced investment manager.

This disclosure reflects the fact that the voting rights effectively held indirectly by the underlying intermediate holding company abrdn Investments (Holdings) Limited (“aI(H)L”) and held by the underlying investment management entity abrdn Investment Management Limited (“aIML”) decreased below the 5% notifiable threshold due to an external in-specie transfer on 10 September 2025. Prior to this crossing, aI(H)L effectively held and aIML held 5.05% of the delegated voting rights.