AIB Group Plc — Major Shareholding Notification 2025

Nov 11, 2025

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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 Ireland)i

1. Identity of the issuer or the underlying issuer of existing shares to which voting rights areattachedii:AIB Group PLC
		2. Reason for the notification (please tick the appropriate box or boxes):
[x] An acquisition or disposal of voting rights[ ] 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: Principal Global Investors, LLC		City and country of registered office (if applicable):
		Des Moines, Iowa (United States)
	4. Full name of shareholder(s) (if different from 3.)v:
Date on which the threshold was crossed or reachedvi: 04 November 20255.
6.Date on which issuer notified: 06 November 2025
7. Threshold(s) that is/are crossed or reached: 5% of Regulatory requirement under the TransparencyRegulations 2007
8. Total positions of person(s) subject to the notification obligation:
	% of voting rightsattached to shares(total of 9.A)	% of voting rightsthrough financialinstruments(total of 9.B.1 + 9.B.2)	Total of both in %(9.A + 9.B)	Total number ofvoting rights ofissuervii
Resulting situationon the date on whichthreshold wascrossed or reached	5.01%	0%	5.01%	2,136,766,718
Position of previousnotification (ifapplicable)	4.98%	0%	4.98%

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9. Notified details of the resulting situation on the date on which the threshold was crossed or reachedviii**:**

A: Voting rights attached to shares

Class/type ofshares	Number of voting rightsix		% of voting rights
ISIN code (ifpossible)	Direct	Indirect	Direct	Indirect
Ordinary Shares(ISIN:IE00BF0L3536)	0	107,117,411	0	5.01%
SUBTOTAL A	107,117,411		5.01%

B 1: Financial Instruments according to Regulation 17(1)(a) of the Regulations 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 N/A N/A N/A N/A N/A SUBTOTAL B.1 N/A N/A

B 2: Financial Instruments with similar economic effect according to Regulation 17(1)(b) of the
Regulations

Type of financialinstrument	Expirationdatex	Exercise/ConversionPeriod xi	Physical orcashsettlementxii	Number ofvoting rights	% of voting rights
N/A	N/A	N/A	N/A	N/A	N/A
			SUBTOTALB.2	N/A	N/A

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• 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 itequals or is higher thanthe notifiable threshold	% of voting rightsthrough financialinstruments if it equalsor is higher than thenotifiable threshold	Total of both if it equalsor is higher than thenotifiable threshold
Principal FinancialGroup
Principal FinancialServices Inc.
Principal GlobalInvestors HoldingCompany (US) LLC
Principal GlobalInvestors, LLC	5.01%		1%

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**:**

Principal Global Investors, LLC ("PGI") is an investment adviser registered with the U.S. Securities and Exchange Commission under the U.S. Investment Advisers Act of 1940. Principal Financial Group is the parent entity for a group of investment management companies, the chain of which is set out above (in section 10) and includes Principal Global Investors LLC, which is acting on behalf of various clients. Some of these clients, pursuant to advisory contracts, provide the power to PGI to vote their shares at its own discretion (i.e. without specific written instructions). The shares reported on this notification are owned by accounts under the investment management of PGI.