Material related party transaction and new COO

Nostrum Oil & Gas PLC (the "Company" or "Nostrum") announces that Nostrum Oil & Gas Coöperatief UA, a wholly-owned indirect subsidiary of the Company, has today entered into an employment agreement with David Roberts, who will serve as Chief Operating Officer of the Company, reporting to the Company's Chief Executive Officer.

David has a 50% shareholding in RD Energy Caspian Holdings Limited, which holds 31,975,192 ordinary shares of Nostrum (representing 18.88% of the Company's ordinary share capital).

As a result of David's shareholding in the Company and certain other factors the employment agreement is defined as a material related party transaction under DTR 7.3.8R.

David's initial compensation under the employment agreement will be USD 396,000 per annum plus customary benefits. The employment agreement may be terminated by either party with six months' notice or immediately in certain circumstances specified in the agreement.

The Board confirms its view that entry into the employment agreement with David is fair and reasonable from the perspective of the Company and of the shareholders who are not a related party, including minority shareholders.

The Company also announces that Robert Tinkhof, who joined the Company as Chief Operating Officer on 12 February 2019, retired from that position on 3 September 2025.

Viktor Gladun, Nostrum's Chief Executive Officer, commented:

"I am delighted to welcome David to Nostrum. At the same time, I would like to thank Robert for his major contributions to the Company."