Case C-53/18: Judgment of the Court (Second Chamber) of 8 May 2019 (request for a preliminary ruling from the Tribunale Amministrativo Regionale per il Lazio — Italy) — Antonio Pasquale Mastromartino v Commissione Nazionale per le Società e la Borsa (Consob) (Reference for a preliminary ruling — Markets in financial instruments — Directive 2004/39/EC — Articles 8, 23, 50 and 51 — Scope — Financial adviser authorised to provide offsite services — Staff member who has become a defendant in criminal proceedings — National legislation providing for the possibility of temporarily prohibiting the exercise of the activity — Fundamental freedoms — Purely internal situation — Not applicable)