Nostrum Oil & Gas Plc ABOUT OPERATIONS SUSTAINABILITY INVESTORS CAREERS MEDIA CONTACT Bonds & Credit Ratings Publicly traded bonds Current outstanding bond issues for Nostrum Oil & Gas are provided in the following table: Settlement Maturity Currency Amount (M) Coupon Listing RegS Rule 144A Feb 2018 Feb 2025 USD 400 7.000% Dublin CUSIP N64884AD6 66978CAC6 ISIN USN64884AD67 US66978CAC64 Common Code 176959886 176959878 Jul 2017 Jul 2022 USD 725 8.00% Dublin CUSIP N64884AB0 66978CAB8 ISIN USN64884AB02 US66978CAB81 Common Code 16453439 164534073 Credit Ratings Nostrum Oil & Gas is currently being rated by two credit rating agencies: Standard and Poor’s and Moody’s Investor Services: Agency Rating Outlook Moody's CAA2 Negative Standard and Poor's CCC+ Stable 2020 Overview Investment Case Summary Financials Regulatory News & Alerts Share Price Reports & Presentations Documents & Circulars Financial Calendar Analyst Coverage Bonds & Credit Ratings Total Voting Rights An Introduction to Nostrum Oil & Gas Nostrum Highlights Financial Calendar 9th Floor 20 Eastbourne Terrace London W2 6LG United Kingdom +44 20 3740 7430 Modern Slavery and Transparency Statement Privacy & Cookies Policy Disclaimer © 2021 Nostrum Oil & Gas Plc Website by BRIGHTER*IR follow us on linked in

Nostrum Oil & Gas Plc ABOUT OPERATIONS SUSTAINABILITY INVESTORS CAREERS MEDIA CONTACT Total Voting Rights Nostrum Oil & Gas PLC’s capital consists of 188,182,958 ordinary shares of £0.01 each (“Ordinary Shares”) with voting rights. Nostrum holds no treasury shares in its own name, the Ordinary Shares referred to as “Treasury capital” in the company’s accounts being Ordinary Shares held by the trustee of the company’s employee benefit trust. Such Ordinary Shares held by the EBT trustee do have voting rights attached to them and, therefore, the total number of voting rights in Nostrum Oil & Gas PLC Ordinary Shares is 188,182,958. This figure may be used by shareholders as the denominator for the calculations by which they determine whether they are required to notify their interest in, or a change to their interest in, Nostrum Oil & Gas PLC under the FCA’s Disclosure Guidance and Transparency Rules. 2020 Overview Investment Case Summary Financials Regulatory News & Alerts Share Price Reports & Presentations Documents & Circulars Financial Calendar Analyst Coverage Bonds & Credit Ratings Total Voting Rights An Introduction to Nostrum Oil & Gas Nostrum Highlights Financial Calendar 9th Floor 20 Eastbourne Terrace London W2 6LG United Kingdom +44 20 3740 7430 Modern Slavery and Transparency Statement Privacy & Cookies Policy Disclaimer © 2021 Nostrum Oil & Gas Plc Website by BRIGHTER*IR follow us on linked in