Application for Admission

26 October 2026

Serica Energy plc
('Serica' or 'the Company')

Application for Admission

Serica Energy plc (AIM: SQZ), confirms that application has been made to the London Stock Exchange for the entire issued share capital of the Company, being 393,568,407 Ordinary Shares, to be admitted to trading on the main market for listed securities (the "Main Market") ("Admission"). It is expected that Admission will become effective and that trading in the Ordinary Shares will commence at or around 8.00 am on 27 October 2026.

Total Voting Rights

Following Admission, the Company's issued share capital will comprise 393,568,407 ordinary shares of US$0.10 each. Accordingly, the total number of voting rights in the Company following Admission is 393,568,407. 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, the Company under the Financial Conduct Authority's Disclosure Guidance and Transparency Rules.

Enquiries:

About Serica Energy Plc

Serica Energy is an independent British oil and gas company with a broad portfolio of assets located in the UK Continental Shelf (UKCS). The Company operates assets that deliver around 10% of the UK's gas production, a key component of the UK energy system, and has invested over £1 billion in the UK supply chain since 2020. Serica maintains a broadly balanced output of oil and gas across its operations.

The Company's key producing assets are currently grouped around two major hubs: the Bruce, Keith, and Rhum fields in the Northern North Sea, where Serica is the operator; and a mix of operated and non-operated fields connected to the Triton FPSO in the Central North Sea. The Company also holds a notable position West of Shetland, including a 40% operated stake in the Greater Laggan Area offshore fields and associated Shetland Gas Plant.

Serica also completed the acquisition of a package of operated and non-operated assets from Spirit Energy on 1 October 2026, including a 15% stake in the Cygnus field and 25% in Clipper South as well as the operated Greater Markham Area.

Serica aims to create shareholder value through a mix of production from existing oil and gas fields, organic investment and M&A.

Serica's Ordinary Shares currently trade on the AIM market of the London Stock Exchange (ticker: SQZ), and the Company has announced its intention to move its listing to the Main Market of the LSE in 2026. More information about Serica is available on the Company's website (www.serica-energy.com). To receive news updates by email, interested parties can subscribe through the website.

Important Notice

This announcement contains statements that are, or may be deemed to be, 'forward-looking statements'. These forward-looking statements can be identified by the use of words such as 'will', 'expect', 'could', 'believe', 'intend', 'should' and words of similar meaning. All statements other than statements of historical facts included in this announcement, including those regarding the Company's strategy, plans and objectives and the anticipated Admission are forward-looking statements. Readers are cautioned not to place undue reliance on such statements. Forward-looking statements involve a number of known and unknown risks, uncertainties and other factors, many of which are difficult to predict and generally beyond the control of Serica. These forward-looking statements speak only as of the date of this announcement. Serica expressly disclaims any obligation or undertaking to update or revise any forward-looking statement (except to the extent legally required).

Peel Hunt LLP ('Peel Hunt'), which is authorised and regulated in the United Kingdom by the FCA, is acting exclusively for the Company  as Sponsor and no one else in connection with Admission and it will not regard any other person as a client in relation to Admission and will not be responsible to anyone other than the Company  for providing the protections afforded to its clients or for providing advice in relation to Admission or any other transaction, matter, or arrangement referred to in this announcement.

This announcement has been issued by, and is the sole responsibility of, the Company. No representation or warranty, express or implied, is or will be made as to, or in relation to, and no responsibility or liability is or will be accepted by Peel Hunt or by any of its affiliates, partners, directors, officers, employees, advisers or agents as to or in relation to, the accuracy or completeness of this announcement or any other written or oral information made available to or publicly available to any interested party or its advisers, and any liability therefore is expressly disclaimed.