Keeping with their manager for the 2013–14 Serie A campaign, Coulantuono secured 11th place and some impressive performances, including victories of local rivals Internazionale and A.C. Milan. Before the start of the 2014–15 Serie A season, Coulantuono committed his future to Atalanta, however, the season did not go well and after a poor run of form he was dismissed on 4 March 2015 and replaced by Edy Reja, leaving Atalanta only 3 points above the relegation zone.
Coulantuono's time as manager for Atalanta spanned from 2013-14 Serie A campaign, where he achieved 11th place and notable wins against local rivals like Internazionale and A.C. Milan. He then committed to the club before the start of the 2014-15 season but faced a difficult period, ultimately leading to his dismissal on March 4, 2015, after Atalanta struggled in the league.