The case is part of a series of closed-door trials that have been criticised by rights groups and others opposed to the wide-ranging emergency laws used to quell demonstrations.
The appeals, like the trial before it, were heard in a special security court presided over by military and civilian judges. It was set up under emergency laws implemented during a government crackdown on the majority Shiite-led protests against the Sunni monarchy.
The security court is separately trying 21 opposition leaders and political activists, most of them Shiites, accused of plotting against the state. A Shiite cleric and eight others were jailed last week for 20 years for the alleged kidnapping of a police officer.