Former Enron chief executive Jeffrey Skilling - already in prison for his role in the once-mighty energy giant's collapse - has been resentenced to 14 years as part of a court-ordered reduction and a separate agreement with prosecutors.
The decision brought a protracted legal conclusion to one of the most notorious financial scandals in the US.
Skilling has been in prison since 2006, when he was sentenced to more than 24 years by US District Judge Sim Lake. But an appeals court vacated his prison term in 2009, ruling that a sentencing guideline was improperly applied. That meant a reduction of as much as nine years.
However, Skilling's resentencing was delayed for years as he unsuccessfully sought to overturn his convictions, including appealing to the US Supreme Court.
The Justice Department said that in an effort to resolve a case that has gone on for more than 10 years, it agreed to an additional reduction of about 20 months as part of a deal to stop Skilling from filing any more appeals. Federal prosecutors say the deal will allow for the distribution of about 41 million US dollars (£26 million) of Skilling's assets in restitution to victims of Enron's 2001 collapse.
Even with the reduced sentence, Skilling's prison term is still the longest of those involved in the Enron scandal. He was the highest-ranking executive to be punished. Enron founder Kenneth Lay's similar convictions were vacated after he died of heart disease less than two months after his trial.
Skilling, 59, was convicted in 2006 on 19 counts of conspiracy, securities fraud, insider trading and lying to auditors for his role in the downfall of Houston-based Enron. The company, once the seventh-largest in the US, went bankrupt under the weight of years of illicit business deals and accounting tricks.
A one-time visionary, Skilling was vilified by many former Enron employees for denying any wrongdoing.
The US Supreme Court said in 2010 that one of Skilling's convictions was flawed when it sharply curtailed the use of the "honest services" fraud law - a short addendum to the federal mail and wire fraud statute that makes it illegal to scheme to deprive investors of "the intangible right to honest services".
The high court ruled that prosecutors can use the law only in cases where evidence shows the defendant accepted bribes or kickbacks, and because Skilling's misconduct entailed no such things, he did not conspire to commit honest services fraud.