Kingspan Group Plc

Major Shareholding Notification • Nov 20, 2025

Standard Form TR-1

Standard form for notification of major holdings

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

attachedii:	1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are
KINGSPAN GROUP PLC
2. Reason for the notification (please tick the appropriate box or boxes):
[ X ] An acquisition or disposal of voting rights
[ X ] An acquisition or disposal of financial instruments
[ ] An event changing the breakdown of voting rights
[ ] Other (please specify)iii:
3. Details of person subject to the notification obligationiv :
Name:	City and country of registered office (if applicable):
BlackRock, Inc.	Wilmington, DE, U.S.A.
4. Full name of shareholder(s)	(if different from 3.)v :
5. Date on which the threshold was crossed or reachedvi:
18/11/2025
6. Date on which issuer notified:
19/11/2025
7. Threshold(s) that is/are crossed or reached:
Total holdings for BlackRock, Inc. have gone above 6%.
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	5.97%	0.04%	6.01%	180,396,053

Position of previous notification (if applicable)	5.91%	0.04%	5.95%
---------------------------------------------------------	-------	-------	-------	--

	A: Voting rights attached to shares
Class/type of shares	Number of voting rightsix		% of voting rights
ISIN code (if possible)	Direct	Indirect	Direct	Indirect
IE0004927939		10,779,275		5.97%
SUBTOTAL A		10,779,275		5.97%

Type of financial instrument	Expiration datex	Exercise/ Conversion Periodxi	Number of voting rights that may be acquired if the instrument is exercised/converted.	% of voting rights
American Depository Receipts	N/A	N/A	71,571	0.03%
			71,571	0.03%

B 2: Financial Instruments with similar economic effect according to Regulation 17(1)(b) of the Regulations
Type of financial instrument	Expiration datex	Exercise/ Conversion Period xi	Physical or cash settlementxii	Number of voting rights	% of voting rights
CFD	N/A	N/A	Cash	1,503	0.00%
			SUBTOTAL B.2	1,503	0.00%

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 legal entityxiv:		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
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
See attachment
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:

Namexv	higher than the notifiable threshold	instruments if it equals or is higher than the notifiable threshold	equals or is higher than the notifiable threshold
BlackRock, Inc.
BlackRock Saturn Subco, LLC
BlackRock Finance, Inc.
BlackRock Holdco 2, Inc.
BlackRock Financial Management, Inc.
BlackRock International Holdings, Inc.
BR Jersey International Holdings L.P.
BlackRock (Singapore) Holdco Pte. Ltd.
BlackRock HK Holdco Limited
BlackRock Lux Finco S.a.r.l.
BlackRock Japan Holdings GK
BlackRock Japan Co., Ltd.
BlackRock, Inc.
BlackRock Saturn Subco, LLC
BlackRock Finance, Inc.
Trident Merger, LLC
BlackRock Investment Management, LLC
BlackRock, Inc.
BlackRock Saturn Subco, LLC
BlackRock Finance, Inc.
BlackRock Holdco 2, Inc.

BlackRock Financial Management, Inc.
BlackRock International Holdings, Inc.
BR Jersey International Holdings L.P.
BlackRock Holdco 3, LLC
BlackRock Cayman 1 LP
BlackRock Cayman West Bay Finco Limited
BlackRock Cayman West Bay IV Limited
BlackRock Group Limited
BlackRock Finance Europe Limited
BlackRock Investment Management (UK) Limited
BlackRock, Inc.
BlackRock Saturn Subco, LLC
BlackRock Finance, Inc.
BlackRock Holdco 2, Inc.
BlackRock Financial Management, Inc.
BlackRock International Holdings, Inc.
BR Jersey International Holdings L.P.
BlackRock Australia Holdco Pty. Ltd.
BlackRock Investment Management (Australia) Limited
BlackRock, Inc.
BlackRock Saturn Subco, LLC
BlackRock Finance, Inc.
BlackRock Holdco 2, Inc.
BlackRock Financial Management, Inc.
BlackRock International Holdings, Inc.
BR Jersey International Holdings L.P.

BlackRock Holdco 3, LLC
BlackRock Cayman 1 LP
BlackRock Cayman West Bay Finco Limited
BlackRock Cayman West Bay IV Limited
BlackRock Group Limited
BlackRock International Limited
BlackRock, Inc.
BlackRock Saturn Subco, LLC
BlackRock Finance, Inc.
BlackRock Holdco 2, Inc.
BlackRock Financial Management, Inc.
BlackRock Holdco 4, LLC
BlackRock Holdco 6, LLC
BlackRock Delaware Holdings Inc.
BlackRock Institutional Trust Company, National
Association
BlackRock, Inc.
BlackRock Saturn Subco, LLC
BlackRock Finance, Inc.
BlackRock Holdco 2, Inc.
BlackRock Financial Management, Inc.
BlackRock Holdco 4, LLC
BlackRock Holdco 6, LLC
BlackRock Delaware Holdings Inc.
BlackRock Fund Advisors
BlackRock, Inc.

BlackRock Saturn Subco, LLC
BlackRock Finance, Inc.
BlackRock Holdco 2, Inc.
BlackRock Financial Management, Inc.
BlackRock, Inc.
BlackRock Saturn Subco, LLC
BlackRock Finance, Inc.
BlackRock Holdco 2, Inc.
BlackRock Financial Management, Inc.
BlackRock International Holdings, Inc.
BR Jersey International Holdings L.P.
BlackRock (Singapore) Holdco Pte. Ltd.
BlackRock HK Holdco Limited
BlackRock Asset Management North Asia Limited
BlackRock, Inc.
BlackRock Saturn Subco, LLC
BlackRock Finance, Inc.
BlackRock Holdco 2, Inc.
BlackRock Financial Management, Inc.
BlackRock International Holdings, Inc.
BR Jersey International Holdings L.P.
BlackRock Holdco 3, LLC
BlackRock Cayman 1 LP
BlackRock Cayman West Bay Finco Limited
BlackRock Cayman West Bay IV Limited
BlackRock Group Limited
BlackRock Finance Europe Limited

BlackRock (Netherlands) B.V.
BlackRock Asset Management Deutschland AG
BlackRock, Inc.
BlackRock Saturn Subco, LLC
BlackRock Finance, Inc.
BlackRock Holdco 2, Inc.
BlackRock Financial Management, Inc.
BlackRock International Holdings, Inc.
BlackRock Canada Holdings ULC
BlackRock Asset Management Canada Limited
BlackRock, Inc.
BlackRock Saturn Subco, LLC
BlackRock Finance, Inc.
BlackRock Holdco 2, Inc.
BlackRock Financial Management, Inc.
BlackRock Capital Holdings, Inc.
BlackRock Advisors, LLC
BlackRock, Inc.
BlackRock Saturn Subco, LLC
BlackRock Finance, Inc.
BlackRock Holdco 2, Inc.
BlackRock Financial Management, Inc.
BlackRock International Holdings, Inc.
BR Jersey International Holdings L.P.
BlackRock Holdco 3, LLC
BlackRock Cayman 1 LP

BlackRock Cayman West Bay Finco Limited
BlackRock Cayman West Bay IV Limited
BlackRock Group Limited
BlackRock Finance Europe Limited
BlackRock Advisors (UK) Limited
BlackRock, Inc.
BlackRock Saturn Subco, LLC
BlackRock Finance, Inc.
BlackRock Holdco 2, Inc.
BlackRock Financial Management, Inc.
BlackRock International Holdings, Inc.
BR Jersey International Holdings L.P.
BlackRock (Singapore) Holdco Pte. Ltd.
BlackRock (Singapore) Limited
BlackRock, Inc.
BlackRock Saturn Subco, LLC
BlackRock Finance, Inc.
Trident Merger, LLC
BlackRock Investment Management, LLC
Amethyst Intermediate, LLC
Aperio Holdings, LLC
Aperio Group, LLC
BlackRock, Inc.
BlackRock Saturn Subco, LLC
BlackRock Finance, Inc.
Trident Merger, LLC

Web Holdings, LLC
SpiderRock Advisors, LLC

Notes

• i . Persons completing this form should have regard to the requirements of the Transparency (Directive 2004/109/EC) Regulations 2007 as amended (the "Regulations"), the Central Bank of Ireland's Transparency Rules (the "Transparency Rules") and Commission Delegated Regulation (EU) 2015/761 of 17 December 2014.
• ii Full name of the legal entity and other identifying specification of the issuer or underlying issuer, provided it is reliable and accurate (e.g. address, LEI, domestic number identity).
• iii Other reason for the notification could be voluntary notifications, changes of attribution of the nature of the holding (e.g. expiring of financial instruments) or acting in concert.
• iv This should be the full name of (a) the shareholder; (b) the natural person or legal entity acquiring, disposing of or exercising voting rights in the cases provided for in Regulation 15(b) to (h) of the Regulations (Article 10 (b) to (h) of Directive 2004/109/EC); or (c) the holder of financial instruments referred to in Regulation 17(1) of the Regulations (Article 13(1) of Directive 2004/109/EC).

As the disclosure of cases of acting in concert may vary due to the specific circumstances (e.g. same or different total positions of the parties, entering or exiting of acting in concert by a single party) the standard form does not provide for a specific method how to notify cases of acting in concert.

In relation to the transactions referred to in points (b) to (h) of Regulation 15 of the Regulations (Article 10 of Directive 2004/109/EC), the following list is provided as an indication of the persons who should be mentioned:

• - in the circumstances foreseen in letter (b) of Regulation 15 of the Regulations (Article 10 of Directive 2004/109/EC), the natural person or legal entity that acquires the voting rights and is entitled to exercise them under the agreement and the natural person or legal entity who is transferring temporarily for consideration the voting rights;
• - in the circumstances foreseen in letter (c) of the Regulation 15 of the Regulations (Article 10 of Directive 2004/109/EC), the natural person or legal entity holding the collateral, provided the person or entity controls the voting rights and declares its intention of exercising them, and natural person or legal entity lodging the collateral under these conditions;
• - in the circumstances foreseen in letter (d) of Regulation 15 of the Regulations (Article 10 of Directive 2004/109/EC), the natural person or legal entity who has a life interest in shares if that person or entity is entitled to exercise the voting rights attached to the shares and the natural person or legal entity who is disposing of the voting rights when the life interest is created;
• - in the circumstances foreseen in letter (e) of Regulation 15 of the Regulations (Article 10 of Directive 2004/109/EC), the controlling natural person or legal entity and, provided it has a notification duty at an individual level under Regulation 14 of the Regulations (Article 9 of Directive 2004/109/EC), under letters (a) to (d) of Regulation 15 of the Regulations (Article 10 of Directive 2004/109/EC) or under a combination of any of those situations, the controlled undertaking;
• - in the circumstances foreseen in letter (f) of Regulation 15 of the Regulations (Article 10 of Directive 2004/109/EC), the deposit taker of the shares, if he can exercise the voting rights attached to the shares deposited with him at his discretion, and the depositor of the shares allowing the deposit taker to exercise the voting rights at his discretion;
• - in the circumstances foreseen in letter (g) of Regulation 15 of the Regulations (Article 10 of Directive 2004/109/EC), the natural person or legal entity that controls the voting rights;
• - in the circumstances foreseen in letter (h) of Regulation 15 of the Regulations (Article 10 of Directive 2004/109/EC), the proxy holder, if he can exercise the voting rights at his discretion, and the shareholder who has given his proxy to the proxy holder allowing the latter to exercise the voting rights at his discretion (e.g. management companies).
• ^v Applicable in the cases provided for in Regulation 15(b) to (h) of the Regulations (Article 10 (b) to (h) of Directive 2004/109/EC). This should be the full name of the shareholder who is the counterparty to the natural person or legal entity referred to in Regulation 15 of the Regulations (Article 10 Directive 2004/109/EC) unless the percentage of voting rights held by the shareholder is lower than the

lowest notifiable threshold for the disclosure of voting rights holdings in accordance with the requirements of the Regulations and the Transparency Rules.

• vi The date on which threshold is crossed or reached should be the date on which the acquisition or disposal took place or the other reason triggered the notification obligation. For passive crossings, the date when the corporate event took effect.
• vii The total number of voting rights shall be composed of all the shares, including depository receipts representing shares, to which voting rights are attached even if the exercise thereof is suspended.
• viii If the holding has fallen below the lowest applicable threshold in accordance with the Regulations and the Transparency Rules the holder is not obliged to disclose the extent of the holding only that the holding is "below 3%" or "below 5%" as appropriate.
• ix In case of combined holdings of shares with voting rights attached "direct holding" and voting rights "indirect holding", please split the voting rights number and percentage into the direct and indirect columns – if there is no combined holdings, please leave the relevant box blank.
• ^x Date of maturity/expiration of the financial instrument i.e. the date when right to acquire shares ends.
• xi If the financial instrument has such a period – please specify this period – for example once every 3 months starting from [date].
• xii In case of cash settled instruments the number and percentages of voting rights is to be presented on a delta-adjusted basis (Regulation 17(4) of the Regulations/Article 13(1a) of Directive 2004/109/EC).
• xiii If the person subject to the notification obligation is either controlled and/or does control another undertaking then the second option applies.
• xiv The full chain of controlled undertakings, starting with the ultimate controlling natural person or legal entity, has to be presented also in cases in which only on subsidiary level a threshold is crossed or reached and the subsidiary undertaking discloses the notification, as only thus will the markets get a full picture of the group holdings. In the case of multiple chains through which the voting rights and/or financial instruments are effectively held, the chains have to be presented chain by chain leaving a row free between different chains (e.g.: A, B, C, free row, A, B, D, free row, A, E, F etc.).
• xv The names of controlled undertakings through which the voting rights and/or financial instruments are effectively held have to be presented irrespective of whether the controlled undertakings cross or reach the lowest applicable threshold themselves.
• xvi Example: Correction of a previous notification.