The Russian performance artist was convicted for setting fire to car tires on Saint Petersburg’s Tripartite Bridge during a pro-Ukraine performance, titled Freedom, in February 2014. A Moscow court found Pavlensky guilty of vandalism and sentenced him to sixteen months in prison on May 29^th.
The artist will not have to serve the time because the statue of limitations on the crime has expired. However, he remains in custody for a second case in which he is being tried for burning the doors of a former KGB building in November 2015.
update: On June 8, a Moscow court found Pavlensky guilty of damaging a cultural site and ordered him to pay 481.000 rubles (7.750 $) to compensate the cost of repairs to the former KGB building. After seven months in prison the court set him free.

Source: abc news, artforum, update: Moscow Times