Three members of the group were condemned to life in prison on November 25. Others received prison terms from 9 to 15 years. The group went on trial in July.
After the Eurovision contest last year, Azerbaijan's Security Ministry announced it had foiled a bid to stage attacks during the competition. More than 40 suspects were arrested.
Earlier this year, at least seven were convicted of terrorism and high treason and received prison sentences between 12 and 14 years. Investigators said the group had links with neighboring Iran.
The group's leader reportedly was killed during an operation to arrest the suspects on the eve of the competition.