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

[x] An event changing the breakdown of voting rights

[ ] Other (please specify)iii:

3. Details of person subject to the notification obligationiv :

Name:

FMR LLC

City and country of registered office (if applicable):

Wilmington, Delaware

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

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

17th of July 2026

6. Date on which issuer notified:

20th of July 2026

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 issuervii

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

6.0964%

0.00%

6.0964%

629,008,818

Position of previous notification (if applicable)

6.0413%

0.00%

6.0413%

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

[√] 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

FMR LLC

Fidelity Management & Research Company LLC

FMR Investment Management (UK) Limited

FMR LLC

Fidelity Management & Research Company LLC

FMR LLC

FMTC Holdings LLC

Fidelity Management Trust Company

11. In case of proxy voting: [<