Business
Publication of Open Offer Circular
Rockhopper Exploration plc has published an Open Offer Circular detailing its recent financial close on the Sea Lion Project and the launch of an Open Offer. This announcement follows the company's update on December 22, 2025, regarding the financial close and completion of a placing. The circular, containing full details of the Open Offer and an application form for qualifying shareholders, has been posted to those who elected to receive hard copies and is available on the company's website. Disclaimer*

About this update from Rockhopper Exploration Plc
[{"type":"text","content":"\n\nTHIS ANNOUNCEMENT AND THE INFORMATION CONTAINED HEREIN, IS RESTRICTED AND IS NOT FOR RELEASE, PUBLICATION, DISTRIBUTION OR FORWARDING, IN WHOLE OR IN PART, DIRECTLY OR INDIRECTLY, IN OR INTO THE UNITED STATES, AUSTRALIA, CANADA, JAPAN, THE REPUBLIC OF SOUTH AFRICA OR ANY OTHER JURISDICTION IN WHICH SUCH RELEASE, PUBLICATION OR DISTRIBUTION WOULD BE UNLAWFUL.\n \nTHIS ANNOUNCEMENT IS FOR INFORMATION PURPOSES ONLY AND IS NOT AN OFFER OF SECURITIES IN ANY JURISDICTION.\n \n29 December 2025\n \nRockhopper Exploration plc\n(\"Rockhopper\" or the \"Company\")\nPublication of Open Offer Circular\n \nRockhopper Exploration plc (AIM: RKH), the oil and gas company with key interests in the North Falkland Basin, on 22 December 2025, announced the Financial Close on Sea Lion Project, Completion of Placing and Launch of Open Offer.\n \nIn respect of the Open Offer, a Circular containing its full details (together with an Open Offer Application Form for Qualifying Shareholders who hold their Ordinary Shares in certificated form), has today been posted to Shareholders who have elected to receive hard copies of shareholder documentation and published on the Company's website:\nhttps://rockhopperexploration.co.uk/investors/shareholder-documents/ \n \n \nEnquiries:\n \nRockhopper Exploration plc\nSam Moody - Chief Executive Officer\nTel. +44 (0)20 7390 0230 (via Vigo Consulting)\n \nCanaccord Genuity Limited (Sole Bookrunner, NOMAD and Joint Broker)\nHenry Fitzgerald-O'Connor/James Asensio/Charlie Hammond\nTel. +44 (0) 20 7523 8000\n \nPeel Hunt LLP (Joint Broker, Lead Manager)\nRichard Crichton/Georgia Langoulant\nTel. +44 (0) 20 7418 8900\n \nVigo Consulting\nPatrick d'Ancona/Ben Simons/Fiona Hetherington\nTel. +44 (0) 20 7390 0234\n \nNotes to Editors\n \nRockhopper Exploration plc is a UK-based oil and gas exploration and production company with key interests in the Falkland Islands. The Company holds a 35% interest in licences in the North Falkland Basin, where it has sanctioned the development of the significant Sea Lion field which was originally discovered by the Company in 2010.\n \nRockhopper's shares are quoted on the AIM market of the London Stock Exchange under the ticker RKH.\n \nFor more information, visit the Company's website at www.rockhopp...