Kingspan Group Plc

Transaction in Own Shares • Aug 8, 2025

KINGSPAN GROUP PLC

Inside Information Commencement of Share Buyback Programme

8 August 2025

Kingspan Group PLC (the "Company" or "Kingspan"), the global leader in high performance insulation, building envelope and advanced building systems solutions, announces that it intends to commence a new Share Buyback Programme. Pursuant to the shareholder authority granted at Kingspan's Annual General Meeting on 1 May 2025, the Company announces its intention to repurchase up to 10% of the issued Ordinary Shares of €0.13 each in the capital of the Company (the "Shares") subject to a maximum aggregate consideration of €650 million (the "Buyback"). The purpose of the Buyback is to reduce the share capital of the Company and as such, the Company will cancel any Shares repurchased.

Kingspan has entered into non-discretionary arrangements with Goodbody Stockbrokers UC and BofA Securities Europe SA (the "Banks") to conduct the Buyback and to repurchase the Shares on its behalf, on a riskless principal basis, and to make trading decisions under the Buyback independently of Kingspan in accordance with certain preset parameters.

The Buyback will commence today, 8 August 2025 and, subject to the necessary shareholder authorities required to conduct the Buyback remaining in place, will end no later than 31 July 2027 and is subject to market conditions. Under the terms of the Buyback, all Shares will be purchased by the Banks on the Company's behalf for subsequent repurchase by the Company in each case on Euronext Dublin and will be subsequently cancelled.

The Buyback will be carried out within certain pre-set parameters and within the limitations of the authority granted at Kingspan's Annual General Meeting on 1 May 2025 and any renewal of that authority.

The Buyback will also be conducted within the parameters prescribed by the Market Abuse Regulation 596/2014 and the Commission Delegated Regulation (EU) 2016/1052 ("MAR") as well as the listing rules of Euronext Dublin.

Details of any Shares repurchased under the Buyback will be notified to a Regulatory Information Service by the Company following repurchase. Purchases may continue under the Buyback during any closed period to which the Company is subject. The Company confirms that, upon publication of this announcement, it currently has no unpublished inside information.

There is no guarantee that the Buyback will be implemented in full.

For further information please contact:

Lorcan Dowd Company Secretary + 353 (0)42 9698000

Note: This announcement contains inside information for the purposes of Article 7 of Regulation (EU) No 596/2014 ("MAR"). Upon publication of this announcement, the inside information is now considered to be in the public domain for the purposes of MAR. The person responsible for arranging the release of this announcement on behalf of the Company is Lorcan Dowd, Kingspan Group plc's Company Secretary and General Counsel. The date and time of this statement is the same as the date and time that it has been communicated to the media.

Nothing in this announcement should be considered to be a forecast of future profitability, dividends or financial position of the Company or its group and none of the information in this announcement is or is intended to be a profit forecast, dividend forecast or profit estimate.