Blocklisting Application

23 January 2020

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

Blocklisting Application

Rockhopper Exploration plc (AIM: RKH), the oil and gas exploration and production company with key interests in the North Falkland Basin, announces that, in order to provide for the anticipated issue of shares under the Company's Share Incentive Plan ("SIP") for the remainder of the current tax year and for the 2020/2021 tax year, the Company has applied for a further 500,000 ordinary shares to be blocklisted (the "Blocklisting Shares").

The Company's HMRC approved SIP was launched in March 2012 and is made available to all employees of the Company including executive Directors who are entitled to participate on an equal basis subject to HMRC limits. Participants can purchase shares in the Company on a monthly basis and receive matching awards of shares and all employees and executive Directors are eligible to receive an annual award of free shares, the level of which is determined by the Company's Remuneration Committee.

The Blocklisting Shares are expected to be admitted to trading on AIM on 28 January 2020.

Enquiries:

Rockhopper Exploration plc

Jan Davies, Company Secretary

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

Canaccord Genuity Limited (NOMAD and Joint Broker)

Henry Fitzgerald-O'Connor/James Asensio

Tel. +44 (0) 20 7523 8000

Peel Hunt LLP (Joint Broker)

Richard Crichton

Tel. +44 (0) 20 7418 8900

Vigo Communications

Patrick d'Ancona/Ben Simons

Tel. +44 (0) 20 7390 0234