3 September 2021

San Leon Energy plc

("San Leon" or the "Company")

Notice of Annual General Meeting

San Leon, the independent oil and gas production, development and exploration company focused on Nigeria, is pleased to announce that the Company's Annual General Meeting (the "AGM") will be held on 30 September 2021 at 11.00 a.m. at the Herbert Park Hotel, Ballsbridge, Dublin 4, Ireland.

The Notice of AGM will be posted to shareholders today. The Notice of AGM, which contains details of the resolutions for consideration can be downloaded from the Company's website:  www.sanleonenergy.com.

Public Health Guidelines

In light of the existing and expected public health guidelines related to COVID-19 and the importance of the health and safety of shareholders, staff and others, shareholders are asked to comply with the recommendations set out herein for this year's AGM and to use the proxy voting service rather than physically attending this year's AGM. The Board therefore strongly encourages shareholders to appoint the chairman of the AGM as a proxy by submitting a proxy form not less than 48 hours before the time appointed for the AGM or any adjournment thereof, in order to ensure they can exercise their vote and be represented at the AGM without attending in person.

Proxy forms can be submitted in advance of the AGM by availing of one of the options set out in the notice of the AGM:

(i) by post or by hand to the Company's registrar, Computershare Investor Services (Ireland) Limited, 3100 Lake Drive, Citywest Business Campus, Dublin 24, D24 AK82, Ireland;

(ii)  electronically by accessing www.eproxyappointment.com ; or

(iii)  via the CREST System, where shares are held in CREST.

Details regarding how shareholders can submit any questions they would like to raise at the AGM in advance and how shareholders can listen to the business of the AGM via teleconference are also contained in the Notice of AGM.

As the situation is evolving and the Irish Government guidance may change, shareholders are encouraged to check the company's website for any further updates regarding the AGM at www.sanleonenergy.com. In the event that it is not possible to hold the AGM either in compliance with public health guidelines or applicable law or where it is otherwise considered that proceeding with the AGM as planned poses an unacceptable health and safety risk, the AGM may be adjourned or postponed or relocated to a different time and/or venue, in which case notification of such adjournment or postponement or relocation will be given in accordance with applicable law.

Important changes to voting procedures for certain Shareholders for the AGM

This will be the Company's first AGM since migration of the holding and settlement of uncertificated shares in the Company from CREST to the Euroclear Bank system which occurred on 15 March 2021. San Leon therefore urges shareholders who hold interests in the Company's shares directly through the Euroclear Bank system or as CREST depository interests through the CREST system to consult with your stockbroker, custodian or other intermediary at the earliest opportunity for further information on the processes and timelines for submitting proxy appointments or voting instructions for the AGM. These processes and timelines will differ from the comparable processes and timelines that applied in CREST. San Leon has included some additional explanatory information, in the Notice of AGM based on the information currently available, but it will be important for relevant shareholders to confirm these procedures with their stockbroker, custodian or other intermediary as they may vary depending on the specific arrangements that are in place for individual shareholders.

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