UNCONDITIONAL NOTICE OF MANDATORY PARTIAL REDEMPTION

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To the Bondholders and Agent in:

ISIN: NO0013140640 – Open Infra US Assets AB (publ) up to USD 150,000,000 Senior Secured Bonds

UNCONDITIONAL NOTICE OF MANDATORY PARTIAL REDEMPTION

Reference is made to the terms and conditions originally dated 20 February 2024 (as amended and/or supplemented from time to time) (the ”Terms and Conditions”) relating to the abovementioned bonds (the ”Bonds”) issued by Open Infra US Assets AB (the ”Issuer”).

All capitalised terms used herein and not otherwise defined in this Notice shall have the meaning assigned to them in the Terms and Conditions.

The Issuer hereby gives unconditional notice to all Bondholders and the Agent that it will apply an amount of USD 10,000,000 towards a partial redemption of the Bonds (the ”Mandatory Prepayment”) in accordance with Clause 9.7 (Mandatory Partial Redemption) of the Terms and Conditions on 29 September 2026 (the ”Redemption Date”). The record date for the Mandatory Prepayment shall be 25 September 2026 (the ”Record Date”), i.e. two (2) CSD Business Days prior to the Redemption Date. The Mandatory Prepayment shall be made together with a premium of 1.00 per cent. of the amount so redeemed (the ”Redemption Price”).

The Redemption Price together with accrued but unpaid interest in respect of the nominal amount to be redeemed up to the Redemption Date (the ”Redemption Amount”) will be paid on the Redemption Date to each person who is registered as a Bondholder in the debt register maintained by the CSD at the end of business on the Record Date. This redemption notice is irrevocable and is governed by Swedish law.

For further information, please contact the Issuer at:

Erik Stiernstedt, CEO

+ 46 (0) 70 550 30 73

erik@openinfra.com

21 September 2026

Open Infra US Assets AB (publ)