Current Report No. 30/2021Date: 2021-07-21Issuer'strading name: SERINUS ENERGY plc

Title:Holding in Company

Legal basis: Article 70(1) of the Act on Offering - acquisition ordisposal of a significant block of shares

Content:According to Article 70(1) of the Act on PublicOffering [...] the Management of SERINUS ENERGY plc ("Company" or"Serinus") informs that it received the notification provided by HadronCapital LLP. (London, UK) and prepared under AIM regulations (UK),informing about a decrease of the share in the total vote in the Companybelow the threshold of 5%. According to the notification the HadronCapital LLP currently holds 53,906,367 shares of the Company,representing 4.73% of the total vote.

The attachment to this current report contains the text of the originalnotification in English, which has been filed by the Company in the UKand will also be available on the Company's website:www.serinusenergy.com