Tullow Oil plc

Appointment of Chief Executive Officer

5 September 2025 - Tullow Oil plc (Tullow) is pleased to announce the appointment of Ian Perks as Tullow's new Chief Executive Officer (CEO).

Ian will take up the role of CEO and join the Board on 15 September 2025. Following the appointment, Richard Miller, who is currently Chief Financial Officer (CFO) and Interim CEO, will return to his role as CFO.

Ian has over 30 years of experience in the upstream oil and gas business and has worked extensively in Africa and other international locations. He has held senior roles at BG Group, Anadarko and Total covering all aspects of the industry.

As Senior Vice President for Mozambique Liquified Natural Gas (LNG) at Anadarko and later at Total, he successfully engaged with the Government of Mozambique to lead the $20 billion Mozambique LNG project to a Final Investment Decision.

Prior to Anadarko, Ian led numerous divisions of BG Group, establishing a track record of successfully delivering multi-billion-dollar projects, reducing costs and growing profitability. He oversaw the delivery and subsequent operations of the $10 billion Queensland Gas Company (QGCLNG) Project, safely, on schedule and within budget.

As President of BG Tunisia, he led the business to deliver industry leading safety performance, maximising production and reducing costs, whilst successfully delivering the $1 billion Hasdrubal gas project. Ian also helped oversee tremendous growth of BG's business in Trinidad and Tobago, as profit doubled between 2002-05.

Ian holds a Bachelor of Science in Economics from Loughborough University.

Phuthuma Nhleko, Chairman of Tullow Oil Plc, said: "I am delighted to welcome Ian to Tullow as CEO. He brings a wealth of industry and African knowledge and experience and has a track record of successfully managing large multi-stakeholder businesses and projects. I would like to take this opportunity to thank Richard Miller for stepping into the role of Interim CEO and congratulate him on the considerable progress made during that time. I look forward to working with Ian and Richard."

Ian Perks, Chief Executive Officer - Designate of Tullow Oil Plc, also commented today: "I am pleased to join Tullow at this pivotal time for the Company. My near term priority will be to work with Richard, the Tullow team and our stakeholders to put the Company on a long-term sustainable financial footing. We will then have an opportunity to grow the Company across Africa, leveraging our current assets and reputation on the continent of Africa to add value for our stakeholders."

Notes to editors

Tullow is an independent energy company that is building a better future through responsible oil and gas development in Africa. Tullow's operations are focused on its core producing assets in Ghana. Tullow is committed to becoming Net Zero on its Scope 1 and 2 emissions by 2030, with a Shared Prosperity strategy that delivers lasting socio-economic benefits for its host nations. The Group is quoted on the London and Ghanaian stock exchanges (symbol: TLW). For further information, please refer to: www.tullowoil.com.

Follow Tullow on:

LinkedIn: www.linkedin.com/company/Tullow-Oil

X: www.X.com/TullowOilplc

This announcement contains inside information for the purposes of Article 7 of the Market Abuse Regulation (EU) No 596/2014 (as it forms part of UK domestic law by virtue of the European Union (Withdrawal) Act 2018 as amended by virtue of the Market Abuse (Amendment) (EU Exit) Regulations 2019). Upon publication of this announcement, this inside information will be considered to be in the public domain. The person responsible for arranging the release of this announcement on behalf of Tullow is Adam Holland, Company Secretary.

There are no further disclosures required for the purposes of UKLR 6.4.6R and UKLR 6.4.8R. 

This announcement is not intended to, and does not, constitute or form part of any offer, invitation or the solicitation of an offer to purchase, subscribe for or otherwise acquire, or to sell, transfer or otherwise dispose of, any securities or the solicitation of any vote or approval in any jurisdiction, whether pursuant to this announcement or otherwise.

The release, publication or distribution of this announcement in, into or from jurisdictions outside the United Kingdom may be restricted by law and therefore persons into whose possession this announcement comes should inform themselves about, and observe, such restrictions. Any failure to comply with the restrictions may constitute a violation of the securities law of any such jurisdiction.