Under the plea agreement reached with prosecutors, he could have served up to 10 years in prison.
Democracy surely suffers when sentences are instead reached through backroom deals with powerful prosecutors.
The bank has yet to reach a final agreement with federal prosecutors in Manhattan and with the Justice Department.
In August, the firm reached a $456 million deferred-prosecution agreement with federal prosecutors over certain questionable shelters.
Ms. Lewinsky's family is happy that she finally reached an immunity deal with prosecutors after six months of uncertainty.
He represented himself in court and changed his plea after reaching an agreement with federal prosecutors.
Reaching a deal with prosecutors in December 2012, Schwartz did not face trial, and the charges against him were dropped.
In August, the firm itself reached a $456 million deferred-prosecution agreement with federal prosecutors.
Mr. Melton testified as part of an immunity agreement he reached with prosecutors.
Dr. Waksal has until Friday to reach an agreement with prosecutors.