REG — SDCL Efficiency Inc. — TR — 1 Notification of Major Holdings

For best results when printing this announcement, please click on link below: RNS Number: 4495V HgCapital Trust PLC 18 September 2026 TR-1: Standard form for notification of major holdings NOTIFICATION OF MAJOR HOLDINGS (to be sent to the relevant issuer and to the FCA in Microsoft Word format if possible) (i) 1a. Identity of the issuer or the underlying issuer of existing shares to HGCAPITAL TRUST PLC which voting rights are attached (ii): 1b. Please indicate if the issuer is a non-UK issuer (please mark with an "X" if appropriate) Non-UK issuer 2.

Reason for the notification (please mark the appropriate box or boxes with an "X") 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) (iii): 3. Details of person subject to the notification obligation (iv) Name VALHALLA VENTURES LIMITED City and country of registered office (if applicable) ST HELIER, JERSEY 4. ) (v) Name City and country of registered office (if applicable) 5. Date on which the threshold was crossed or reached (vi): 16/09/2026 6.

Date on which issuer notified (DD/MM/YYYY): 18/09/2026 7. Total positions of person(s) subject to the notification obligation % of voting rights attached to shares (total of 8. 364% applicable) 8. 323% SUBTOTAL 8.

1R (1) (a) Type of financial instrument Expiration Exercise/ Number of voting rights that may be acquired if the instrument is % of voting rights date (x) Conversion Period (xi) exercised/converted. SUBTOTAL 8. 2 9.

Information in relation to the person subject to the notification obligation (please mark the applicable box with an "X") Person subject to the notification obligation is not controlled by any natural X person or legal entity and does not control any other undertaking(s) holding directly or indirectly an interest in the (underlying) issuer (xiii) 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 (please add additional rows as necessary) (xiv) Name (xv) % 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 Total of both if it equals or is higher than the notifiable threshold than the notifiable threshold 10.

In case of proxy voting, please identify: 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 (xvi) Place of completion LONDON Date of completion 18/09/2026 This 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. Terms and conditions relating to the use and distribution of this information may apply.

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