Bittnet Systems S.A. (hereinafter referred to as the “Company”) informs the shareholders about the upcoming closed period. Between January 25th 2019 and February 22nd 2019, the shareholders who have the status of insider within the meaning of FSA Regulation no. 5/2018, Law 24/2017, and Regulation (EU) no. 522/2016 and Regulation (EU) No. 596/2014, shall not conduct any transactions on their own account or for the account of a third party, directly or indirectly, relating to the shares or debt instruments of the issuer or other financial instruments linked to them during a closed period of 30 days before the announcement of an interim financial report. The closed period is due to the fact that on February 22nd 2019, the Company will publish the preliminary results for 2018.