Mandatory notification of trade in Horisont Energi AS

Sandnes, Norway – 21 December 2023 Stebua AS has on 20 December 2023 purchased 4,000 shares in Horisont Energi AS (EURONEXT: HRGI), at NOK 5,94 per share. After the purchase Stebua AS has a total holding of 15,000 shares in Horisont Energi AS. Stebua AS is closely associated to Rob Stevens, who is a board member of Horisont Energi AS. Please find the attached details of the transaction. The information is subject to the disclosure requirements pursuant to Regulation EU 596/2014 article 19, no. 3, and section 5-12 of the Norwegian Securities Trading Act. For more information: Leiv Kallestad, CFO + 47 958 95 661 Leiv.kallestad@horisontenergi.com Siri Melberg, Head of branding & communication +47 470 35 718 sm@horisontenergi.com About Horisont Energi: Horisont Energi (EURONEXT: HRGI) is a Norwegian clean energy company that provides clean energy and carbon transport and storage services. The company will transform gas, water and renewable energy into cost-leading clean ammonia and hydrogen and offer CO2 transportation and storage services using proprietary technology, paving the way for a low carbon economy. The company was founded in 2019 and is headquartered in Sandnes, Norway. www.horisontenergi.no