Consent Solicitation

As announced previously, Nostrum Oil & Gas Finance B.V. (the "Issuer"), a wholly-owned subsidiary of Nostrum Oil & Gas PLC (the "Parent"), was required by 30 June 2025 to have paid accrued interest in accordance with the terms and conditions of the Issuer's outstanding notes with ISIN USN64884AF16, US66978CAF95, USN64884AE41 and US66978CAD48 (the "Notes"). The Notes are guaranteed by, among other entities, the Parent. As the Issuer did not pay the due interest in accordance with the terms and conditions of the Notes, such default has become an "Event of Default" (as defined in the conditions of the Notes) and the Issuer launched a consent solicitation with respect to such Event of Default.

In respect of the senior unsecured notes, the required quorum for the noteholders meeting has not been satisfied. Consequently, the adjourned meeting will take place on the 6 October 2025.

Timing

The Notice of the adjourned meeting is available on the Parent's website: www.nog.co.uk and can also be accessed using the link below.

The Parent thanks holders of the Notes for their support and participation in resolving these third party issues that are delaying the interest payment due on the Notes.