Interoil completes strategic exit from Argentina

Oslo, Norway – February 9, 2025 – Interoil Exploration and Production ASA (“Interoil” or the “Company”) announces that it has completed a strategic decision to exit its conventional operations in Argentina. The exit covers the interests held by Interoil in the country in all of the Santa Cruz Sur joint operations (due to expire between April and August 2026), and the La Brea Block, as well as the right to challenge the termination of the Mata Magallanes Oeste (MMO) production concession and the Cañadón Ramírez (CR) exploration block.

This decision follows a comprehensive review of Interoil’s conventional onshore portfolio and reflects the Company’s continued commitment to disciplined capital allocation and operational focus.

The decision to exit Argentina is also informed by a sustained deterioration in the operating and investment environment in the Province of Santa Cruz. Over time, several major international and national operators, including YPF, Pan American Energy, Petrobras, Sinopec and Total, have progressively reduced or exited their conventional positions in the region as asset competitiveness declined. Increased fiscal and regulatory complexity, recurring labor and social disruptions, and reduced long-term investment visibility have negatively impacted capital allocation decisions. When combined with the mature nature of the assets and rising operating costs, these factors have contributed to a structurally less attractive environment for large-scale operators.

The withdrawal process is being carried out in close coordination with local partners and regulatory authorities to ensure a responsible and orderly transition for all stakeholders.

Interoil additionally confirms that the above-mentioned Argentine assets were sold to an Argentine investor in a transaction valued at a price of up to USD 1,000,000, payable in ten contingent installments. Each installment is subject to the condition that, at the time of payment, production must have reached a threshold of 47,000 BOE per month.

Furthermore, as part of the transaction structure, Interoil will receive an Overriding Royalty Interest (ORRI) equivalent to 80% of the profits generated from production exceeding 57,000 BOE per month.

“Exiting Argentina’s conventional assets represents a significant strategic milestone for Interoil,” said Leandro Carbone, Chief Executive Officer of Interoil. “Our Argentine operations have contributed valuable production and experience over the years; however, this transition allows the Company to further sharpen its strategic focus and optimize its capital allocation. Going forward, Interoil intends to concentrate on the identification and development of non-conventional energy assets, as well as the evaluation of select complementary assets, in line with the Company’s long-term objective of enhancing operational efficiency and value creation.”

Interoil views the current industry context as an appropriate moment to finalize its Argentine operations, taking advantage of conditions that allow for an orderly divestment from mature, conventional assets. The Company remains committed to maintaining the highest standards of operational responsibility throughout the transition process.

This notice contains information which is considered inside information pursuant to the European Market Abuse Regulation. The notice has been published by Geir Arne Drangeid (Partner and Senior Advisor, First House AS) at 15:00 CET on 9 February 2026.

About Interoil Exploration and Production ASA

Interoil Exploration and Production ASA is a Norwegian-based independent oil and gas exploration and production company listed on the Oslo Stock Exchange under the ticker IOX. The Company has operated in Latin America for over two decades, applying strong technical capabilities and a disciplined approach to value creation and sustainability.

This information is subject to the disclosure requirements pursuant to Section 5-12 the Norwegian Securities Trading Act