SEPLAT ENERGY PLC ("SEPLAT")

NOTICE OF CLOSED PERIOD ON SEPLAT SHARE DEALINGS

Lagos, Nigeria - 30th December 2021: In line with the Amendments to Chapter 17 of the Issuers' Rules of the Nigerian Exchange Limited ("the Exchange") and in the run up to the announcement of SEPLAT's Q4 2021 Financial Results and 2021 Annual Financial Statement, please be informed that the Company shall commence its closed period for trading in its shares from Friday, 31st December 2021, to end on Tuesday, 1st March 2022 or 24 hours after the release of its 2021 Annual Financial Statement.

Accordingly, no Director, Employee, Person Discharging Managerial Responsibility, Adviser(s) of the Company and their connected persons may directly or indirectly deal in the shares of the Company in any manner during the closed period.

FOR: SEPLAT ENERGY PLC.

- ENDS -

Mrs. Edith Onwuchekwa

Director, Legal/Company Secretary

FOR: SEPLAT ENERGY PLC.

Notes to editors

Seplat ENERGY Plc is a leading indigenous Nigerian energy company with a strategic focus on Nigeria, listed on the Premium Board of the Nigerian Exchange Limited ("NGX ") (NGX:SEPLAT) and the Main Market of the London Stock Exchange ("LSE") (LSE:SEPL). Seplat is pursuing a Nigeria focused growth strategy and is well-positioned to participate in future divestment programmes by the international oil companies, farm-in opportunities and future licensing rounds. For further information, please refer to the company website, http://seplatenergy.com/