ormer Societe Generale trader Jerome Kerviel will serve three years in jail with a further two years suspended after being convicted by a Paris court.
Kerviel was told he must also repay the damages of almost 5bn euros ($7bn; £4bn) the bank said it lost through his risky trades.
He was found guilty of forgery, unauthorised computer use and breach of trust.
Kerviel’s lawyer said they would appeal the conviction.
The former trader will remain free until the appeal is heard.
