Former Illinois House Speaker Mike Madigan filed an appeal of his federal corruption conviction Wednesday.

Last month, Madigan was sentenced to 7 1/2 years in prison, following his conviction on bribery, conspiracy, and fraud charges. He was also ordered to pay a $2.5 million fine.

Madigan was convicted in February of 10 corruption counts – including bribery conspiracy, bribery, and wire fraud – but acquitted him on seven other charges, while jurors were deadlocked on six other counts, following a four-month trial accusing him of running a yearslong criminal enterprise to enrich himself and his political allies.

Madigan and his longtime political confidant Michael McClain were accused of conspiring with utility companies ComEd and AT&T to provide no-show jobs to Madigan's allies in exchange for the speaker's help on legislation. Prosecutors also accused Madigan of pressuring real estate developers to hire his private law firm, which specializes in property tax appeals.

Last week, Madigan's legal team asked a judge to keep him from going to prison as they appeal his conviction.

• Mike Madigan