Cohen, Bharara said the criminal case against the firm "remains open" and "there is no coverage for criminal prosecution, no immunity from criminal prosecution for anyone."
Bharara noted that it is important to hold institutions and not just individuals accountable for wrongdoing.
"Nobody can think just because they are a particular business or financial institution that they automatically have a get-out-of-jail-free card. You cannot put a business in prison but for accountability, for the truth to come out, sometimes institutions should be charged also."
On his office's campaign against insider trading on Wall Street, Bharara said "everyone should be deeply deeply worried about the cleverness of the prosecutors in my office."