AIB Group Plc — Major Shareholding Notification 2025

Aug 14, 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 Ireland)

1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached: AIB Group Public Limited Company 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): 3. Details of person subject to the notification obligation: Name: Wellington Management Group LLP City and country of registered office (if applicable): c/o Wellington Management Company LLP, 280 Congress Street, Boston, MA 02210 USA 4. Full name of shareholder(s) (if different from 3.): 5. Date on which the threshold was crossed or reached: 13 Aug 2025 6. Date on which issuer notified: 14 Aug 2025 7. Threshold(s) that is/are crossed or reached:

4%

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 issuer
Resulting situation on the date on which threshold was crossed or reached	4.00%	0.04%	4.04%	2,136,766,718
Position of previous notification (if applicable)	3.98%	0.04%	4.02%

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

	A: Voting rights attached to shares
Class/type of shares ISIN code (if possible)	Number of voting rights			% of voting rights
	Direct	Indirect	Direct	Indirect
IE00BF0L3536 Common Stock		85,520,111		4.00%
SUBTOTAL A	85,520,111			4.00%

B 1: Financial Instruments according to Regulation 17(1)(a) of the Regulations
Type of financial instrument	Expiration date	Exercise/ Number of voting rights Conversion that may be acquired if the rights Period instrument is exercised/converted		% of voting
Depository Receipt			64 Depository Receipt shares or 128 votes on a converted basis	0.00%
		SUBTOTAL B.1	128	0.00%

B 2: Financial Instruments with similar economic effect according to Regulation 17(1)(b) of the Regulations
Type of financial instrument	Expiration date	Exercise/ Conversion Period	Physical or cash settlement	Number of voting rights	% of voting rights
Equity Swap	15 May 2033	15 May 2033	Cash settlement	726,831 Equity Swap shares or 726,831 votes on a converted	0.03%

				basis
Equity Swap	05 May 2028	05 May 2028	Cash settlement	84,668 Equity Swap shares or 84,668 votes on a converted basis	0.00%
Equity Swap	20 May 2033	20 May 2033	Cash settlement	35,432 Equity Swap shares or 35,432 votes on a converted basis	0.00%
		SUBTOTAL B.2	846,931	0.04%

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.

[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 entity:

Name	% 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
Wellington Management Group LLP	4.00%		4.04%
Wellington Group Holdings LLP	4.00%		4.04%
Wellington Investment Advisors Holdings LLP	4.00%		4.04%
Wellington Management Global Holdings, Ltd.
Wellington Management International Ltd
Wellington Management Group LLP	4.00%		4.04%
Wellington Group Holdings LLP	4.00%		4.04%
Wellington Investment Advisors Holdings LLP	4.00%		4.04%
Wellington Management Company LLP

11. In case of proxy voting: [name of the proxy holder] will cease to hold [% and number] voting rights as of [date].

12. Additional information:

Done in London on 14 Aug 2025.