Nostrum Oil & Gas PlcLSE: NOG

Admission to trading on LSE & total voting rights

· Issued by Nostrum Oil & Gas PLC

London, 10 February 2023

Admission to trading on the London Stock Exchange and total voting rights

Nostrum Oil & Gas PLC (LSE: NOG) ("Nostrum", or the "Company" and together with its subsidiaries, the "Group"), an independent oil and gas company engaging in the production, development and exploration of oil and gas in the pre-Caspian Basin, announces that further to its announcement on 9 February 2023 relating to it completing the Restructuring, 150,563,304 new Ordinary Shares have been admitted to the standard listing segment of the Official List of the Financial Conduct Authority and to trading on the London Stock Exchange under the ticker symbol "NOG.L".

Total Voting Rights and Share Capital

The terms of the Restructuring included the sub-division and consolidation of the ordinary share capital of the Company following the issue of the New Shares on 9 February 2023. This sub-division and share consolidation occurred after close of business on 9 February 2023 and resulted in the number of Ordinary Shares on issue being reduced from approximately 1,693.8 million Ordinary Shares (following the issue of the New Shares yesterday) to approximately 169.4 million Ordinary Shares on the basis of a 10:1 consolidation of ordinary shares.

In accordance with its obligations under the FCA's Disclosure Guidance and Transparency Rules (the "DTRs"), Nostrum hereby confirms that, as at the date of this announcement, the Company's total number of voting rights and capital consist of 169,381,561 ordinary shares each in issue with voting rights, none of which are held in treasury.

The figure of 169,381,561 may be used by shareholders as the denominator for any calculations by which they will determine if they are required to notify their interest in, or a change to their interest in, the Company under the DTRs.

Overview of the Restructuring

Further details of the Restructuring are contained in the prospectus dated 14 October 2022 (as supplemented) which is available on the Company's website at https://www.nostrumoilandgas.com/investors/documents-circulars/ .

Capitalised terms used but not defined in this announcement have the meaning given to them in the Explanatory Statement, which is available to the Scheme Creditors on the Scheme Portal (accessible via the Scheme Website at https://glas.agency/investor_reporting/nostrum-oil-gas-plc/ ).

LEI: 2138007VWEP4MM3J8B29

Further information

For further information please visit www.nostrumoilandgas.com

Further enquiries:

Nostrum Oil & Gas PLC

Thomas Hartnett - Chief Legal Officer / Company Secretary

ir@nog.co.uk

GLAS Specialist Services Limited

Information Agent

+44 20 3597 2940

lm@glas.agency

Rothschild & Co Cie.

Simon Bard

Giovanni Salvetti

+33 1 40 74 40 74

Newport.dl@rothschildandco.com

White & Case LLP

Allan Taylor ( ataylor@whitecase.com )

James Greene ( jgreene@whitecase.com )

Will Stoner ( will.stoner@whitecase.com )

+44 (0) 207 532 1000

WCProjectNewport@whitecase.com

Instinctif Partners - UK

Tim McCall

Galyna Kulachek

Vivian Lai

+ 44 (0) 207 457 2020

nostrum@instinctif.com

Notifying person

Thomas Hartnett

Company Secretary

About Nostrum Oil & Gas

Nostrum Oil & Gas PLC is an independent oil and gas company currently engaging in the production, development and exploration of oil and gas in the pre-Caspian Basin. Its shares are listed on the London Stock Exchange (ticker symbol: NOG) and the Kazakhstan Stock Exchange (ticker symbol: GB_NTRM). The principal producing asset of Nostrum Oil & Gas PLC is the Chinarevskoye field, that is being operated by a wholly-owned subsidiary of Nostrum Oil & Gas PLC - Zhaikmunai LLP, who is the sole holder of the subsoil use rights with respect to the development of the field.

Forward-Looking Statements

Some of the statements in this document are forward-looking. Forward-looking statements include statements regarding the intent, belief and current expectations of the Company or its officers with respect to various matters. When used in this document, the words "expects", "believes", "anticipates", "plans", "may", "will", "should" and similar expressions, and the negatives thereof, are intended to identify forward-looking statements. Such statements are not promises nor guarantees and are subject to risks and uncertainties that could cause actual outcomes to differ materially from those suggested by any such statements.

No part of this announcement constitutes, or shall be taken to constitute, an invitation or inducement to invest in the Company or any other entity, and shareholders of the Company are cautioned not to place undue reliance on the forward-looking statements. Save as required by the relevant listing rules and applicable law, the Company does not undertake to update or change any forward-looking statements to reflect events occurring after the date of this announcement.