Company Announcements

1 May 2025

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 3,385,001 Ordinary Shares of 1 pence each (the "Shares") to the Rockhopper Employee Benefit Trust. The Shares, which were issued on 9 April 2025 under the Company's existing block listing entitlement, will be used to satisfy exercises of options held under Rockhopper's employee share schemes.

In conformity with the Financial Conduct Authority's Disclosure and Transparency Rules, the Company confirms that, as at 30 April 2025, the issued ordinary share capital of the Company consisted of 643,963,765 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 0234 (via Vigo Consulting)

Canaccord Genuity Limited (NOMAD and Joint Broker)

Henry Fitzgerald-O'Connor/James Asensio/Charlie Hammond

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