1 April 2022

Rockhopper Exploration plc

("Rockhopper" or the "Company")

Extension of Heads of Terms

Rockhopper Exploration plc (AIM: RKH), the oil and gas exploration and production company with key interests in the North Falkland Basin, is pleased to announce that Rockhopper, Harbour Energy plc ("Harbour") and Navitas Petroleum LP ("Navitas") have extended the provisions of the previously signed heads of terms (announced on 8 December 2021) from 31 March 2022 to 30 April 2022. The main elements of the transaction have all been agreed, with a view to signing definitive documentation by this date.

Enquiries:

Rockhopper Exploration plc

Sam Moody - Chief Executive Officer

Tel. +44 (0) 20 7390 0234 (via Vigo Consulting)

Canaccord Genuity Limited (NOMAD and Joint Broker)

Henry Fitzgerald-O'Connor/James Asensio

Tel. +44 (0) 20 7523 8000

Peel Hunt LLP (Joint Broker)

Richard Crichton

Tel. +44 (0) 20 7418 8900

Vigo Consulting

Patrick d'Ancona/Ben Simons/Kendall Hill

Tel. +44 (0) 20 7390 0234