SEPLAT ENERGY : CORPORATE ANNOUNCEMENT ON MAJESTIC RIG INCIDENT

Seplat Energy Plc ("Seplat Energy" or the "Company")

Incident involving the Majestic rig near Ovhor, Delta State

Lagos and London - August 15, 2023: Seplat Energy regrets to announce a serious incident on the Depthwise swamp drilling rig "Majestic" in the early hours of this morning. Seplat as the operator of the SEPLAT/NNPCL joint venture contracted the rig. It was in-transit to its planned drilling location at Ovhor in Delta State when it capsized.

92 of the 96-member crew are accounted for and safe. However, tragically one fatality occurred during the incident, while three other rig personnel are still missing.

Our thoughts and prayers are with the families and friends of the crew member who sadly lost his life and the three crew members who are still missing at the time of this report. Our emergency response and rescue efforts working alongside the rig owner and the authorities have been activated and are onsite. Our utmost priority will continue to be the safety and wellbeing of all the affected personnel and their families.

We will provide further details as our understanding of the incident develops. A detailed investigation into the cause of the accident will follow.

ENDS -

Signed:

Mr. Roger Brown

Chief Executive Officer

Enquiries:

Samson Ezugworie, Chief Operating Officer

Chioma Afe, Director External Affairs and Sustainability

Edith Onwuchekwa, Director Legal/Company Secretary

James Thompson, Head of Investor Relations

Notes to editors

Seplat Energy Plc is Nigeria's leading indigenous energy company. It is listed on the Nigerian Exchange Limited (NGX: SEPLAT) and the Main Market of the London Stock Exchange (LSE: SEPL).

Seplat Energy is pursuing a Nigeria-focused growth strategy through participation in asset divestments by international oil companies, farm-in opportunities, and future licensing rounds. The Company is a leading supplier of gas to the domestic power generation market. For further information please refer to the Company website, http://seplatenergy.com/