1 September 2023

Rockhopper Exploration plc

("Rockhopper" or the "Company")

Total Voting Rights

Rockhopper Exploration plc (AIM: RKH), the oil and gas company with key interests in the North Falkland Basin, announces that it has issued a total of 597,616 Ordinary Shares of 1 pence each (the "Shares") pursuant to the exercise of warrants which were issued as part of the capital raising in June 2022. The Shares were issued on 3, 10, 17 and 24 August 2023 under the Company's existing block listing entitlement.

In conformity with the Financial Conduct Authority's Disclosure and Transparency Rules, the Company confirms that, as at 31 August 2023, the issued ordinary share capital of the Company consisted of 590,449,241 Ordinary Shares of 1 pence each with voting rights attached (one vote per ordinary share). The Company does not hold any shares in Treasury at the date of this disclosure. The issued share capital figure can be used by shareholders as the denominator for the calculations by which to determine if they are required to notify their interest in, or a change to their interest in, the Company under the FCA's Disclosure and Transparency Rules.

Enquiries:

Rockhopper Exploration plc

Jan Davies, Company Secretary

Tel. +44 (0)20 7390 0230 (via Vigo Consulting)

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