<div id="readability-page-1"><div>RNS Number : 0611L SSE PLC 10 December 2025 TR-1: Standard form for notification of major holdings1. Issuer DetailsISINGB0007908733Issuer NameSSE PLCUK or Non-UK IssuerUK2. Reason for NotificationAn acquisition or disposal of voting rights3. Details of person subject to the notification obligationNameJPMorgan Chase &amp; Co.City of registered office (if applicable)Country of registered office (if applicable)US4. Details of the shareholderFull name of shareholder(s) if different from the person(s) subject to the notification obligation, aboveCity of registered office (if applicable)Country of registered office (if applicable)5. Date on which the threshold was crossed or reached08-Dec-20256. Date on which Issuer notified10-Dec-20257. Total positions of person(s) subject to the notification obligation<div><table><tbody><tr><td></td><td>% of voting rights attached to shares (total of 8.A)</td><td>% of voting rights through financial instruments (total of 8.B 1 + 8.B 2)</td><td>Total of both in % (8.A + 8.B)</td><td>Total number of voting rights held in issuer</td></tr><tr><td>Resulting situation on the date on which threshold was crossed or reached</td><td>Below Minimum Threshold</td><td>Below Minimum Threshold</td><td>Below Minimum Threshold</td><td>Below Minimum Threshold</td></tr><tr><td>Position of previous notification (if applicable)</td><td>5.449053</td><td>0.857843</td><td>6.306896</td><td></td></tr></tbody></table></div>8. Notified details of the resulting situation on the date on which the threshold was crossed or reached8A. Voting rights attached to shares<div><table><tbody><tr><td>Class/Type of shares ISIN code(if possible)</td><td>Number of direct voting rights (DTR5.1)</td><td>Number of indirect voting rights (DTR5.2.1)</td><td>% of direct voting rights (DTR5.1)</td><td>% of indirect voting rights (DTR5.2.1)</td></tr><tr><td>GB0007908733</td><td></td><td>Below Minimum Threshold</td><td></td><td>Below Minimum Threshold</td></tr><tr><td>Sub Total 8.A</td><td colspan="2">Below Minimum Threshold</td><td colspan="2">Below Minimum Threshold</td></tr></tbody></table></div>8B1. Financial Instruments according to (DTR5.3.1R.(1) (a))<div><table><tbody><tr><td>Type of financial instrument</td><td>Sub Total 8.B1</td></tr><tr><td>Expiration date</td><td colspan="2"></td></tr><tr><td>Exercise/conversion period</td><td></td></tr><tr><td>Number of voting rights that may be acquired if the instrument is exercised/converted</td><td></td></tr><tr><td>% of voting rights</td></tr></tbody></table></div>8B2. Financial Instruments with similar economic effect according to (DTR5.3.1R.(1) (b))<div><table><tbody><tr><td>Type of financial instrument</td><td>Sub Total 8.B2</td></tr><tr><td>Expiration date</td><td colspan="3"></td></tr><tr><td>Exercise/conversion period</td><td></td></tr><tr><td>Physical or cash settlement</td><td></td></tr><tr><td>Number of voting rights</td></tr><tr><td>% of voting rights</td></tr></tbody></table></div>9. Information in relation to the person subject to the notification obligation2. 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)<div><table><tbody><tr><td>Ultimate controlling person</td><td>Name of controlled undertaking</td><td>% of voting rights if it equals or is higher than the notifiable threshold</td><td>% of voting rights through financial instruments if it equals or is higher than the notifiable threshold</td><td>Total of both if it equals or is higher than the notifiable threshold</td></tr><tr><td>JPMorgan Chase &amp; Co.</td><td>J.P. Morgan Securities plc</td><td></td><td></td><td></td></tr><tr><td>JPMorgan Chase &amp; Co.</td><td>J.P. Morgan SE</td><td></td><td></td><td></td></tr><tr><td>JPMorgan Chase &amp; Co.</td><td>J.P. Morgan Securities LLC</td><td></td><td></td><td></td></tr></tbody></table></div>10. In case of proxy votingName of the proxy holderThe number and % of voting rights heldThe date until which the voting rights will be held11. Additional InformationChain of controlled undertakings:JPMorgan Chase &amp; 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 &amp; Co.JPMorgan Chase Holdings LLC (100%)J.P. Morgan Broker-Dealer Holdings Inc. (100%)J.P. Morgan Securities LLC (100%)JPMorgan Chase &amp; Co.JPMorgan Chase Bank, National Association (100%)J.P. Morgan International Finance Limited (100%)J.P. Morgan SE (100%)12. Date of Completion10-Dec-202513. Place Of CompletionLondon, United KingdomThis information is provided by RNS, the news service of the London Stock Exchange. RNS is approved by the Financial Conduct Authority to act as a Primary Information Provider in the United Kingdom. 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SSEZY

SSE Plc announced a notification of major holdings by JPMorgan Chase & Co, indicating an acquisition or disposal of voting rights. The threshold was crossed on December 8, 2025, and the issuer was notified on December 10, 2025. The resulting situation shows voting rights below the minimum threshold. The notification includes details of controlled undertakings and proxy voting information.

REG - SSE Plc JPMorgan Chase & Co - Holding(s) in Company