Founded in 2005 as Phoenix Ulmu, the club situated on the banks of Mostiștea Lake reached the third tier on four occasions, a 2nd place being their best ranking.

[1] In 2010, under the ownership of Vasile Tîrșolea, Phoenix won again Liga IV – Călărași County and after a promotion play-off against Nova Force Giurgiu, Giurgiu County champions, the team from Ulmu advanced again in the third tier.

[2] After a first season in which the team finished 9th and saved from relegation, Phoenix chose to withdraw from the championship during the 2011–12 edition and disappeared for two years from the scene of the Romanian football.

[3] Enrolled in 2013 in the Liga V – Călărași County, fifth tier of the Romanian football league system, Phoenix Ulmu failed to stand out for the next years being ranked 6th and 4th, then was excluded from the league during the 2015–16 season due to financial problems.

In 2020, for a short period, Mostiștea Ulmu plays its home matches on Ion Comșa Stadium in Călărași, with a capacity of 10,400 seats, then moved again, on Voința Sports Base, in Bucharest, with a capacity of 2,500 seats.