Cairn Homes plc

8 May 2026

DIRECTOR DECLARATION

Pursuant to Euronext Dublin Listing Rule 6.1.8 and London Stock Exchange Listing Rule 6.4.9, Cairn Homes plc (“Cairn” or “the Company”) notifies that Mr. Bernard Byrne, non-executive Chairman of the Company, has been appointed as non-executive Chairman of Greencoat Renewables plc, with effect from 7 May 2026.

-ENDS-

For further information, contact:

Cairn Homes plc                                                                                                                          +353 1 696 4600

Tara Grimley, Company Secretary

Notes to Editors

Cairn is an Irish homebuilder committed to building high-quality, competitively priced, sustainable new homes and communities in great locations. At Cairn, the homeowner is at the very centre of the design process. We strive to provide unparalleled customer service throughout each stage of the home-buying journey. A new Cairn home is expertly designed, with a focus on creating shared spaces and environments where communities thrive.