Holding(s) in Company

Pennon Group PLC

15 October 2026

 

TR-1: Standard form for notification of major holdings

1. Issuer Details

ISIN

GB00BNNTLN49

Issuer Name

PENNON GROUP PLC

UK or Non-UK Issuer

UK

2. Reason for Notification

An acquisition or disposal of voting rights; An acquisition or disposal of financial instruments

3. Details of person subject to the notification obligation

Name

Bank of America Corporation

City of registered office (if applicable)

Wilmington

Country of registered office (if applicable)

United States

4. Details of the shareholder

Name	City of registered office	Country of registered office
Merrill Lynch International	London	United Kingdom

5. Date on which the threshold was crossed or reached

13-Oct-2026

6. Date on which Issuer notified

14-Oct-2026

7. Total positions of person(s) subject to the notification obligation

	% of voting rights attached to shares (total of 8.A)	% of voting rights through financial instruments (total of 8.B 1 + 8.B 2)	Total of both in % (8.A + 8.B)	Total number of voting rights held in issuer
Resulting situation on the date on which threshold was crossed or reached	3.098849	2.157330	5.256179	24808190
Position of previous notification (if applicable)	0.010795	0.236706	0.247501

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

8A. Voting rights attached to shares

Class/Type of shares ISIN code(if possible)	Number of direct voting rights (DTR5.1)	Number of indirect voting rights (DTR5.2.1)	% of direct voting rights (DTR5.1)	% of indirect voting rights (DTR5.2.1)
GB00BNNTLN49		14618625		3.097288
US7083262029		7368		0.001561
Sub Total 8.A	14625993		3.098849%

8B1. Financial Instruments according to (DTR5.3.1R.(1) (a))

Type of financial instrument	Expiration date	Exercise/conversion period	Number of voting rights that may be acquired if the instrument is exercised/converted	% of voting rights
Right to Recall	n/a	n/a	3580258	0.758559
Sub Total 8.B1			3580258	0.758559%

8B2. Financial Instruments with similar economic effect according to (DTR5.3.1R.(1) (b))

Type of financial instrument	Expiration date	Exercise/conversion period	Physical or cash settlement	Number of voting rights	% of voting rights
Swaps	13/11/2026	N/A	Cash	671	0.000142
Swaps	18/11/2026	N/A	Cash	500000	0.105936
Swaps	11/12/2026	N/A	Cash	101278	0.021458
Swaps	15/01/2027	N/A	Cash	1565	0.000332
Swaps	16/04/2027	N/A	Cash	165018	0.034963
Swaps	26/04/2027	N/A	Cash	51506	0.010913
Swaps	17/05/2027	N/A	Cash	42517	0.009008
Swaps	25/06/2027	N/A	Cash	54288	0.011502
Swaps	09/09/2027	N/A	Cash	26649	0.005646
Swaps	13/09/2027	N/A	Cash	117148	0.024821
Swaps	15/09/2027	N/A	Cash	151513	0.032101
Swaps	15/10/2027	N/A	Cash	2196730	0.465427
Swaps	29/10/2027	N/A	Cash	53192	0.011270
Swaps	01/11/2027	N/A	Cash	303889	0.064386
Swaps	08/11/2027	N/A	Cash	1250000	0.264841
Swaps	30/11/2027	N/A	Cash	1000000	0.211873
Swaps	15/02/2028	N/A	Cash	135614	0.028733
Swaps	28/02/2028	N/A	Cash	115858	0.024547
Swaps	31/03/2028	N/A	Cash	102166	0.021646
Option	23/04/2032	N/A	Cash	30632	0.006490
Option	15/01/2027	N/A	Cash	84399	0.017882
Option	28/06/2027	N/A	Cash	7234	0.001533
Option	30/05/2028	N/A	Cash	64997	0.013771
Option	04/02/2031	N/A	Cash	45075	0.009550
Sub Total 8.B2				6601939	1.398771%

9. Information in relation to the person subject to the notification obligation

2. 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 entities (please add additional rows as necessary)

Ultimate controlling person	Name of controlled undertaking	% 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	Bank of America, National Association
Bank of America Corporation	BofA Securities, Inc.
Bank of America Corporation	Merrill Lynch International	3.084274		4.780269%
Bank of America Corporation	U.S. Trust Company of Delaware
Bank of America Corporation	BofA Securities Europe SA

10. In case of proxy voting

Name of the proxy holder

The number and % of voting rights held

The date until which the voting rights will be held

If date does not apply, explain below

11. Additional Information

12. Date of Completion

14-Oct-2026

13. Place Of Completion

London, United Kingdom

 

END