SSE PLC

Major Shareholding Notification • Dec 9, 2025

National Storage Mechanism | Additional information

RNS Number : 8877K

SSE PLC

09 December 2025

TR-1: Standard form for notification of major holdings

1. Issuer Details

ISIN

GB0007908733

Issuer Name

SSE PLC

UK or Non-UK Issuer

UK

2. Reason for Notification

An acquisition or disposal of voting rights

3. Details of person subject to the notification obligation

Name

JPMorgan Chase & Co.

City of registered office (if applicable)

Country of registered office (if applicable)

US

4. Details of the shareholder

Name	City of registered office	Country of registered office
J.P. Morgan Securities plc

5. Date on which the threshold was crossed or reached

05-Dec-2025

6. Date on which Issuer notified

09-Dec-2025

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	5.449053	0.857843	6.306896	76130871
Position of previous notification (if applicable)	6.262834	0.856468	7.119302

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)
GB0007908733		65773847		5.449053
Sub Total 8.A	65773847		5.449053%

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
Depository Receipt			200	0.000016
Sub Total 8.B1			200	0.000016%

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
Cash-settled Equity Swap	24/12/2025	24/12/2025	Cash	1164	0.000096
Cash-settled Equity Swap	31/12/2025	31/12/2025	Cash	1211	0.000100
Cash-settled Equity Swap	16/01/2026	16/01/2026	Cash	90026	0.007457
Cash-settled Equity Swap	20/01/2026	20/01/2026	Cash	24095	0.001996
Cash-settled Equity Swap	10/02/2026	10/02/2026	Cash	225572	0.018686
Cash-settled Equity Swap	11/02/2026	11/02/2026	Cash	305607	0.025313
Cash-settled Equity Swap	03/03/2026	03/03/2026	Cash	2141	0.000177
Cash-settled Equity Swap	05/03/2026	05/03/2026	Cash	367	0.000030
Cash-settled Equity Swap	18/03/2026	18/03/2026	Cash	101889	0.008441
Cash-settled Equity Swap	24/03/2026	24/03/2026	Cash	65887	0.005441
Cash-settled Equity Swap	02/04/2026	02/04/2026	Cash	40383	0.003344
Cash-settled Equity Swap	28/04/2026	28/04/2026	Cash	464009	0.038432
Cash-settled Equity Swap	29/04/2026	29/04/2026	Cash	11905	0.000985
Cash-settled Equity Swap	05/05/2026	05/05/2026	Cash	630903	0.052267
Cash-settled Equity Swap	07/05/2026	07/05/2026	Cash	5825	0.000465
Cash-settled Equity Swap	19/05/2026	19/05/2026	Cash	25820	0.002137
Cash-settled Equity Swap	29/05/2026	29/05/2026	Cash	91880	0.007609
Cash-settled Equity Swap	02/06/2026	02/06/2026	Cash	3570	0.000295
Cash-settled Equity Swap	10/06/2026	10/06/2026	Cash	1067	0.000088
Cash-settled Equity Swap	01/07/2026	01/07/2026	Cash	1918	0.000158
Cash-settled Equity Swap	05/08/2026	05/08/2026	Cash	371017	0.030734
Cash-settled Equity Swap	30/09/2026	30/09/2026	Cash	205322	0.016984
Cash-settled Equity Swap	02/10/2026	02/10/2026	Cash	90989	0.007538
Cash-settled Equity Swap	15/10/2026	15/10/2026	Cash	18432	0.001522
Cash-settled Equity Swap	21/10/2026	21/10/2026	Cash	2946	0.000243
Cash-settled Equity Swap	28/10/2026	28/10/2026	Cash	1390	0.000115
Cash-settled Equity Swap	03/11/2026	03/11/2026	Cash	30559	0.002530
Cash-settled Equity Swap	09/11/2026	09/11/2026	Cash	1131531	0.093742
Cash-settled Equity Swap	12/11/2026	12/11/2026	Cash	18247	0.001506
Cash-settled Equity Swap	13/11/2026	13/11/2026	Cash	868771	0.071970
Cash-settled Equity Swap	17/11/2026	17/11/2026	Cash	63366	0.005249
Cash-settled Equity Swap	02/12/2026	02/12/2026	Cash	128508	0.010630
Cash-settled Equity Swap	07/12/2026	07/12/2026	Cash	2696	0.000222
Cash-settled Equity Swap	14/12/2026	14/12/2026	Cash	213315	0.017665
Cash-settled Equity Swap	21/12/2026	21/12/2026	Cash	9000	0.000745
Cash-settled Equity Swap	23/12/2026	23/12/2026	Cash	14546	0.001194
Cash-settled Equity Swap	31/12/2026	31/12/2026	Cash	2206	0.000182
Cash-settled Equity Swap	05/01/2027	05/01/2027	Cash	2544066	0.210763
Cash-settled Equity Swap	13/01/2027	13/01/2027	Cash	15087	0.001247
Cash-settled Equity Swap	15/01/2027	15/01/2027	Cash	388178	0.032152
Cash-settled Equity Swap	20/01/2027	20/01/2027	Cash	38013	0.003147
Cash-settled Equity Swap	02/02/2027	02/02/2027	Cash	1737	0.000143
Cash-settled Equity Swap	04/05/2027	04/05/2027	Cash	319851	0.026493
Cash-settled Equity Swap	29/07/2027	29/07/2027	Cash	30	0.000002
Cash-settled Equity Swap	17/11/2027	17/11/2027	Cash	165810	0.013730
Cash-settled Equity Swap	30/05/2028	30/05/2028	Cash	319	0.000026
Cash-settled Equity Swap	02/03/2029	02/03/2029	Cash	366444	0.030358
Cash-settled Equity Swap	04/04/2030	04/04/2030	Cash	67119	0.005559
Cash-settled Equity Swap	02/05/2030	02/05/2030	Cash	1098613	0.091007
Cash-settled Equity Swap	02/07/2030	02/07/2030	Cash	49204	0.004074
Cash-settled Equity Swap	11/10/2030	11/10/2030	Cash	28960	0.002399
Cash-settled Equity Swap	28/11/2030	28/11/2030	Cash	670	0.000055
Cash-settled Call Option	05/12/2028	05/12/2028	Cash	4643	0.000384
Sub Total 8.B2				10356824	0.857827%

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
JPMorgan Chase & Co.	J.P. Morgan Securities plc	5.403545		6.253112%
JPMorgan Chase & Co.	J.P. Morgan SE
JPMorgan Chase & Co.	J.P. Morgan Securities LLC

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

11. Additional Information

Chain of controlled undertakings:

JPMorgan Chase & Co.

JPMorgan Chase Bank, National Association (100%)

J.P. Morgan International Finance Limited (100%)

J.P. Morgan Capital Holdings Limited (100%)

J.P. Morgan Securities plc (100%)

JPMorgan Chase & Co.

JPMorgan Chase Holdings LLC (100%)

J.P. Morgan Broker-Dealer Holdings Inc. (100%)

J.P. Morgan Securities LLC (100%)

JPMorgan Chase & Co.

JPMorgan Chase Bank, National Association (100%)

J.P. Morgan International Finance Limited (100%)

J.P. Morgan SE (100%)

12. Date of Completion

09-Dec-2025

13. Place Of Completion

London, United Kingdom

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