According to the Public Procurement Act (PPA), the conviction of a candidate/participant for certain types of criminal offences, including active and passive foreign bribery, is grounds for mandatory exclusion from participation in a public procurement procedure. It is indirectly applicable to legal entities, given that the grounds also apply to the exclusion of natural persons who represent the candidate/participant by right or are their proxies, as well as to the members of its management and supervisory bodies, and where these bodies include a legal entity, the natural persons who represent it (article 54, paras. 2-3 PPA).
Source: Bulgaria Public Procurement Act (ENG translation), https://www.me.government.bg/en/library/public-procurement-act-357-c25-m258-1.html