Richelmi sign with Trident for the 2012 season, alongside Julián Leal. For 2013, he moved to reigning teams champion DAMS alongside Marcus Ericsson, he managed to score a podium finish at Silverstone and finished 8th in the standings on 103 points.Richelmi continued with DAMS for the 2014 season, this time with champion of that season Jolyon Palmer. Richelmi scored his maiden GP2 victory in the sprint race at his home event in Monaco and another podium in the sprint race at Italy ensured he finished 9th in the championship on 73 points which helped DAMS take the teams championship.