5 July 2022

Rockhopper Exploration plc
("Rockhopper" or the "Company")

Blocklisting Applications

Rockhopper Exploration plc (AIM: RKH), the oil and gas exploration and production company with key interests in the North Falkland Basin, announces that an application has been made to the London Stock Exchange for a block listing of securities in respect of 10,000,000 Ordinary Shares of £0.01 each (the "New Ordinary Shares") to be admitted to trading on AIM. It is expected that admission will become effective on or around 8 July 2022.

The New Ordinary Shares will be issued when necessary, in order to satisfy the issue of shares pursuant to the exercise of options under the Rockhopper Exploration plc Long Term Incentive Plan 2013 and the Rockhopper Exploration plc Share Option Plan 2020 (collectively "The Employee Share Schemes"). When issued, the New Ordinary Shares will be credited as fully paid and will rank pari passu in all respects with the existing Ordinary Shares of £0.01 each in the capital of the Company ("Ordinary Shares").

The Company also announces that it has applied to the London Stock Exchange to cancel the shares which remain unissued from the blocklisting application submitted on 23^rd January 2020 in connection with the Company's Share Incentive Plan ("SIP") which was discontinued in May 2020.

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/Gordon Hamilton

Tel. +44 (0) 20 7523 8000

Peel Hunt LLP (Joint Broker)

Richard Crichton/Alexander Allen

Tel. +44 (0) 20 7418 8900

Vigo Consulting

Patrick d'Ancona/Ben Simons/Kendall Hill

Tel. +44 (0) 20 7390 0234