Ombrina Mare Arbitration Update

31 March 2021

Rockhopper Exploration plc

("Rockhopper" or the "Company")

Ombrina Mare arbitration update

Rockhopper Exploration plc (AIM: RKH), the oil and gas company with key interests in the North Falkland Basin, provides the following update on its international arbitration against the Republic of Italy in relation to the Ombrina Mare field.

Further to the Company's announcement of 24 December 2020, the Tribunal has today provided the following update:

"The Tribunal's deliberations and the drafting process have both advanced very considerably. The Parties will receive regular updates as we draw this part of our work to a conclusion."

Rockhopper continues to believe it has strong prospects of recovering very significant monetary damages - on the basis of lost profits - as a result of the Republic of Italy's breaches of the Energy Charter Treaty. All costs associated with the arbitration are funded on a non-recourse ("no win - no fee") basis from a specialist arbitration funder.

A further update will be provided in due course.

Enquiries:

Rockhopper Exploration plc

Sam Moody - Chief Executive Officer

Stewart MacDonald - Chief Financial Officer

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

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 Communications

Patrick d'Ancona/Ben Simons

Tel. +44 (0) 20 7390 0234

The information contained within this announcement is deemed by the Company to constitute inside information as stipulated under the Market Abuse Regulations (EU) No. 596/2014 ("MAR").