Mandatory notification of trade – primary insider

(Oslo, 26 August 2022) Gneis AS, a closely associated company of Ivar Gimse, EVP Business Development and part of the executive management team, has on 25 August 2022, sold 930,380 shares in Magseis Fairfield ASA (ticker: MSEIS) at a price of NOK 8.5307 per share. The total number of shares owned by Ivar Gimse after the transaction is 91,015, of which none are owned by Gneis AS. PDMR notifications pursuant to the Market Abuse Regulation article 19 are attached to this announcement. This is information that is subject to the disclosure requirements pursuant to section 5-12 of the Norwegian Securities Trading Act. For further information, please contact: Stig Hognestad, CFO Tel: +47 902 59 040 Email: stig.hognestad@magseisfairfield.com André Bjørvik, SVP Corporate Communication Tel: +47 907 42 746 Email: andre.bjorvik@magseisfairfield.com --- Magseis Fairfield is the global leading provider of ocean bottom seismic (OBS) technology and data acquisition projects. The company has a flexible business model with full scale node operations, as well as lease and sale models. The Marine Autonomous Seismic System "MASS" nodes and the range of Z-nodes combined with handling systems and source technology enables market leading deployment speed and highly cost-efficient acquisition of data with exceptional quality.