AIB Group Plc

Major Shareholding Notification • Dec 15, 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)ⁱ

AIB Group plc

• 2. Reason for the notification (please tick the appropriate box or boxes):
• [] 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)ii
• 3. Details of person subject to the notification obligationiv :

Name:

City and country of registered office (if applicable):

Bank of America Corporation

Wilmington, DE, United States

• 4. Full name of shareholder(s) (if different from 3.)^v :
• 5. Date on which the threshold was crossed or reachedvi: 11/12/2025
• 6. Date on which issuer notified: 12/12/2025
• 7. Threshold(s) that is/are crossed or reached: 3%
• 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	0.165%	2.688%	2.853%	2,136,766,718
Position of previous notification (if applicable)	0.317%	4.010%	4.327%

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 of shares	Number of voting rightsix	% of voting rights
ISIN code (if possible)	Direct	Indirect	Direct	Indirect
IE00BF0L3536	N/A	1,606,733	N/A	0.075%
US00135T1043	N/A	1,915,608	N/A	0.090%
SUBTOTAL A	N/A	3,522,341	N/A	0.165%

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
Right to Recall	N/A	N/A	51,159	0.002%
Physical Swaps	17/02/2026	N/A	1,502,750	0.071%
Physical Swaps	15/12/2025	N/A	5,943,594	0.278%
		SUBTOTAL B.1	7,497,503	0.351%

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

Type of financial instrument	Expiration date	Exercise/con version period	Physical or cash settlement	Number of voting rights	% of voting rights
Swaps	18/03/2026	N/A	Cash	424	0.000%
Swaps	31/07/2026	N/A	Cash	6,315	0.000%
Swaps	16/03/2029	N/A	Cash	167,200	0.008%

			SUBTOTAL B.2	49,943,098	2.337%
Swaps	07/05/2030	N/A	Cash	2,470	0.000%
Swaps	18/11/2026	N/A	Cash	2,531,442	0.117%
Swaps	30/11/2027	N/A	Cash	42,373	0.002%
Swaps	10/03/2026	N/A	Cash	3,242,978	0.152%
Swaps	02/11/2026	N/A	Cash	35,513	0.002%
Swaps	15/02/2028	N/A	Cash	512,011	0.024%
Swaps	15/10/2027	N/A	Cash	224,894	0.011%
Swaps	16/09/2026	N/A	Cash	5,212,100	0.244%
Swaps	23/02/2026	N/A	Cash	5,139,004	0.241%
Swaps	07/03/2029	N/A	Cash	152,185	0.007%
Swaps	30/09/2026	N/A	Cash	23,219	0.001%
Swaps	26/06/2026	N/A	Cash	8,196,905	0.384%
Swaps	13/03/2026	N/A	Cash	9,745,525	0.456%
Swaps	06/01/2026	N/A	Cash	12,717,334	0.595%
Swaps	15/06/2026	N/A	Cash	1,991,206	0.093%

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 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
Bank of America
Corporation
NB Holdings Corporation
BAC North America Holding Company
Bank of America, National Association
Bank of America
Corporation
NB Holdings Corporation
BAC North America
Holding Company
Merrill Lynch, Pierce,
Fenner & Smith
Incorporated
Managed Account Advisors LLC
Bank of America Corporation
NB Holdings Corporation
BofAML Jersey Holdings Limited
BofAML EMEA Holdings 2 Limited

Merrill Lynch International
Bank of America
Corporation
NB Holdings Corporation
BofA Securities, Inc.
Bank of America Corporation
NB Holdings Corporation
BAC North America Holding Company
Merrill Lynch, Pierce, Fenner & Smith Incorporated
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 xvi:

Done at United Kingdom on 12December 2025.