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 its audited results for the year ended 31 December 2022.

2022 HIGHLIGHTS

SEA LION AND NORTH FALKLAND BASIN

Completion of transaction to bring Navitas Petroleum LP ('Navitas') into the North Falkland Basin licences (the 'Transaction')

Licence interests fully aligned o Navitas 65% and Operator o Rockhopper 35%

Rockhopper benefits from two loans from Navitas

Pre-Final Investment Decision ('FID') loan: covers all Rockhopper's Phase 1 Sea Lion project costs pre-FID via 8% loan

Post FID loan: covers two-thirds of Rockhopper's Phase 1 Sea Lion project costs from FID to the earlier of 12 months post-first oil or project completion (for any costs not met by third party debt financing) via 0% loan

Loans repaid from 85% of Rockhopper's working interest share of Sea Lion Phase 1 project cash flows

Sea Lion project re-defined o Total barrels developed: 269mmbbls o Phased drilling

First campaign: 18 wells (11 pre first oil)

Further campaign: 5 wells

Production plateau: 80,000 bbls/d

Redeployed FPSO

Gross JV NPV10 US$4.3 billion

Pre first oil capex US$1.3billion

OMBRINA MARE

Successful arbitration outcome announced in August 2022

Awarded compensation c.EUR190 million plus interest (the 'Award')

Rockhopper sent letter to Italy in September 2022 requesting payment of EUR247 million

Italy seeking to annul; Rockhopper contesting annulment; confident in merits of legal case

Interest accruing at c.EUR1.25 million per month

Rockhopper and Italy directed to find an outcome that allows Rockhopper to enforce whilst protecting Italy from risk of non-recoupment should it succeed in annulment

CORPORATE AND FINANCIAL

Capital raise of US$10.4 million pre-expenses in placing and open offer which completed in July 2022

Warrants outstanding at 9p per share

Administrative expenses remain low Keith Lough, Chairman of Rockhopper, commented:

'As John Summers and I approach our final AGM, we are pleased for shareholders that the Company is in such a strong position. The combination of a new, committed and capable partner in Navitas, a reworked hugely attractive Sea Lion development and the outcome of the Ombrina Mare arbitration sets our company up for what we believe is an exciting moment in our development. We are delighted with the hugely significant progress achieved in the last year and are convinced that we are closer than ever to unlocking the value of Sea Lion for all stakeholders.'

Contact:

Rockhopper Exploration plc

Sam Moody

Chief Executive Officer

Tel: +44 (0) 20 7390 0234

Canaccord Genuity Limited

NOMAD and Joint Broker

Henry Fitzgerald-O'Connor

James Asensio

Gordon Hamilton

Tel: +44 (0) 20 7523 8000

Peel Hunt LLP

Joint Broker

Richard Crichton

Georgia Langoulant

Tel: +44 (0) 20 7418 8900

Vigo Consulting

Patrick d'Ancona

Ben Simons

Fiona Hetherington

Tel: +44 (0) 20 7390 0234

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