Bittnet Systems S.A. (hereinafter referred to as the “Company”) informs the shareholders about the upcoming closed period. Between July 26th, 2017 and August 25th, 2017, the shareholders who have the status of “insider” or the shareholders holding privileged information, within the meaning of CNVM Regulation no. 1/2006, Law 24/2017, and of 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 to derivatives or other financial instruments linked to them during a closed period of 30 calendar days before the announcement of an interim financial report. The closed period is due to the fact that on August 25th 2017, the Company will publish the Semiannual Report for 1st Half of the financial year 2017 accompanied by the half-year financial results.